JP5199499B1 - Display device, display system, adjustment method, television receiver, program, and recording medium - Google Patents

Abstract

A display device capable of setting an optimal white balance for each of a plurality of display modes is provided.
In the display device according to the present invention, an adjustment value setting window 50 for adjusting the white balance of an image uses the white balance adjustment value as the origin and the initial value of the white balance in the selected display mode as an origin. And is shown on a plane stretched by a first axis indicating the first adjustment direction and a second axis indicating an adjustment direction different from the first adjustment direction.
[Selection] Figure 1

Description

  The present invention relates to a display device for adjusting white balance, a display system, and an adjustment method thereof.

  In general, there are individual differences in color vision. For this reason, many display devices have a white balance adjustment function for displaying more natural white by the user by adjusting the gain of each displayed RGB color.

  For example, in Patent Document 1, a mark for specifying color coordinates corresponding to color information relating to a specified arbitrary range is displayed at a corresponding position on a hue circle or a hue bar chart prepared for color adjustment. A color adjustment device to be presented to a person is disclosed.

  Patent Document 2 discloses a first pointer indicating an initial value of a color temperature in a frame displaying a color corresponding to an x coordinate and a y coordinate in an xy chromaticity diagram, and adjustment of a monitor in which the color temperature is adjusted. There is disclosed a color temperature adjusting device that displays a second pointer whose value can be changed and that changes a color temperature of a monitor based on an adjustment value indicated by the second pointer.

  In Patent Document 3, correction values are adjusted in a direction along the black body radiation curve in the chromaticity diagram and in a direction orthogonal to the black body radiation curve, and the white balance of the image is adjusted according to the adjusted correction value. An image processing apparatus for correcting the above is disclosed.

  On the other hand, in recent years, televisions that can display a video by switching a plurality of display modes have been developed. For example, such a television displays a video by switching the display mode to the movie mode when displaying a video that is a movie.

JP 2007-150943 A (released on June 14, 2007) JP 2011-91690 A (published on May 6, 2011) JP 2011-40975 A (published February 24, 2011) JP 2006-19835 A (published on January 19, 2006) JP 2004-118442 A (published April 15, 2004)

  However, the techniques described in Patent Documents 1 and 2 do not take into consideration any configuration for displaying a video by switching a plurality of display modes. The technique described in Patent Document 3 relates to a technique for adjusting the white balance of a captured still image (that is, a photograph), and does not take into consideration switching of a plurality of display modes.

  For this reason, even if these techniques are used for white balance adjustment, the same white balance is applied to all display modes. For this reason, every time the display mode is switched, there is a problem that the user needs to perform white balance adjustment again so that the white balance becomes a desired one.

  The present invention has been made in view of the above problems, and an object thereof is to provide a display device capable of setting an optimum white balance for each of a plurality of display modes.

  In order to solve the above-described problem, the display device according to the present invention is an adjustment window generating unit that generates an adjustment window for adjusting the white balance of a video being displayed in a display device that operates in a plurality of display modes. Display means for displaying the adjustment window generated by the adjustment window generation means, and adjustment means for adjusting white balance with the adjustment value specified by the user on the adjustment window as a target point, The adjustment window is a plane whose origin is the white balance adjustment value, and the initial value of the white balance in the selected display mode, the first axis indicating the first adjustment direction, and the first adjustment direction. It is shown on the plane stretched by the 2nd axis | shaft which shows a different adjustment direction, It is characterized by the above-mentioned.

  According to the above configuration, the adjustment window generating unit generates an adjustment window having an initial value that is different for each display mode as the origin of the adjustment value, and the display unit adjusts the initial value that is different for each display mode. An adjustment window is displayed with the value origin.

  Thus, the user can easily adjust the white balance according to his / her preference for each display mode. Therefore, the user can set an optimum white balance for each of the plurality of display modes.

  In the display device according to the present invention, the first axis indicates a black body radiation direction in the xy chromaticity diagram, and the second axis is an axis orthogonal to the first axis, and the xy chromaticity diagram. Preferably, the adjustment means performs white balance adjustment targeting a target point on the xy chromaticity diagram corresponding to an adjustment value designated by the user on the plane. .

  According to the above configuration, in the adjustment window, a black body radiation direction and a color matching temperature direction that are generally not orthogonal in the xy chromaticity diagram are expressed by respective axes of a coordinate plane represented by two orthogonal axes. Yes.

  Thereby, the user can adjust the white balance with higher operability than when the xy chromaticity diagram is directly displayed on the adjustment window. Also, the user can independently adjust the displacement of the white balance in the black body radiation direction and the displacement in the color matching temperature direction by performing an adjustment operation via the adjustment window. The white balance can be adjusted more intuitively than when the values are adjusted independently, or when the RGB colors are adjusted independently.

  Also, a first light color icon corresponding to low temperature chromaticity along the black body radiation locus in the xy chromaticity diagram is displayed at the positive end of the first axis in the display device according to the present invention. A second light color icon corresponding to high temperature chromaticity along the black body radiation locus is displayed at the negative end of the first axis, and the second axis is positive. A third light color icon corresponding to a chromaticity having a positive deviation from the black body radiation locus is displayed at the end of the direction, and the black portion is displayed at the end of the second axis in the negative direction. It is preferable that the 4th light color icon corresponding to the chromaticity which has a negative deviation from a body radiation locus is displayed.

According to the above configuration, when the adjustment value specified by the user moves in any direction of the first axis and the second axis on the plane stretched by the first axis and the second axis. It is possible to explicitly indicate which color of the video displayed on the display device is to be enhanced. Therefore, the user can adjust the white balance more easily.

  The display device according to the present invention further includes white image generation means for generating a white image, and the display means displays the white image generated by the white image generation means together with the adjustment window during the display. It is preferable to display the image superimposed on the video.

  Here, in Patent Document 4 listed above, a color gradient image or the like is displayed as a color test pattern together with a display image, and an image area to be color-adjusted and a color to be changed are indicated by a display image amount and a color test pattern. A technique for performing color adjustment by specifying each of the above is disclosed. However, in the technique of Patent Document 4, it is necessary for the user himself to select a color to be adjusted, and the work becomes complicated. In addition, when only a part of the color adjustment is performed, there may be a sense of incongruity in the entire image.

  On the other hand, according to the above configuration, the user using the display device can refer to the white image superimposed on the video being displayed when adjusting the white balance. Therefore, the user can adjust the white balance with reference to the white image regardless of the displayed video, and thus can easily adjust the white balance.

  Moreover, it is preferable that the display means in the display device according to the present invention displays the white image around the adjustment window.

  According to the above configuration, when the user refers to the white image, it is not necessary to largely remove the line of sight from the adjustment window, and thus the white balance can be adjusted more smoothly.

  Moreover, it is preferable that the said display means in the display apparatus which concerns on this invention displays the said white image in the position different from the position where the said adjustment window is displayed.

  According to the above configuration, the display device displays the white image separately from the adjustment window. Therefore, since the user can refer to the white image as a part of the displayed video, the displayed video can be adjusted to a more natural white balance.

  Further, the adjustment window generating means in the display device according to the present invention has a chromaticity corresponding to each of the first light color icon, the second light color icon, the third light color icon, and the fourth light color icon, It is preferable to change according to the adjustment value designated by the user.

  Here, the upper brown patent document 5 displays a user interface (GUI) including a hue ring adjustment tool and a brightness adjustment bar as color adjustment means, and performs color adjustment by accepting a user operation according to the GUI. An image color correction apparatus to perform is disclosed. However, in the technique described in Patent Document 5, the user cannot easily grasp how much color adjustment is performed by moving the hue ring adjustment tool or the brightness adjustment bar, and performs color adjustment. There has been a problem that the operation to perform becomes complicated. This is because a user who uses the image color correction apparatus is not familiar with color adjustment and generally cannot easily understand words such as hue circle and brightness.

On the other hand, according to the above configuration, the display device can adjust the colors of the first to fourth light-color icons according to the current adjustment value, and the adjustment value is newly designated by the user. In this case, the colors of the first to fourth light color icons can be changed according to the newly designated adjustment value. Therefore, the user refers to the first to fourth light color icons, and confirms how the white balance changes when the adjustment value is moved in the direction of the light color icon. The balance can be adjusted. Accordingly, since the user can intuitively adjust the white balance, the operation for adjusting the white balance can be prevented from becoming complicated.

  Further, the adjustment window generating means in the display device according to the present invention sets the cursor indicating the color of the target point corresponding to the adjustment value designated by the user to the adjustment value immediately before designated by the user. It is preferable to generate an adjustment window to be displayed over the cursor indicating the color of the target point.

  According to said structure, the said display apparatus is the xy chromaticity diagram corresponding to the color of the target point on the xy chromaticity diagram corresponding to the adjustment value designated by the user, and the adjustment value immediately before designated by the user. The color of the upper target point can also be presented to the user.

  Thus, the user can easily confirm the change in the color that is the target point of white balance before and after the designation of the adjustment value, so that the user can easily adjust to the desired white balance.

  Further, the display system according to the present invention is a display system including the display device and a remote controller for receiving an instruction from a user, wherein each light icon is a color assigned to an operation button of the remote controller. It preferably has a different color from

  According to said structure, the color of each said light color icon and the color attached | subjected to the operation button of the said remote control differ. This causes the user to misunderstand that each operation button corresponds to each icon, as compared with the case where the color of each light icon is the same as the color assigned to the operation button of the remote controller. The possibility can be reduced. Therefore, it is possible to reduce an erroneous operation in which the user presses the operation button by mistake.

  In addition, a display device adjustment method according to the present invention is a white balance adjustment method for a display device that operates in a plurality of display modes in order to solve the above-described problem, and adjusts the white balance of a display image. An adjustment window generation step for generating an adjustment window for displaying, a display step for displaying the adjustment window generated in the adjustment window generation step, and an adjustment value designated by the user on the adjustment window as a target point for white balance The adjustment window is a plane having the white balance adjustment value as the origin and the initial value of the white balance in the selected display mode as the origin, and indicates the first adjustment direction. A first axis and a second axis indicating an adjustment direction different from the first adjustment direction. It illustrates on a plane spanned Te, and characterized in that.

  According to the above configuration, the adjustment window generation step generates an adjustment window having an initial value that is different for each display mode in the display mode, and the initial value that is different for each display mode is adjusted in the display step. An adjustment window is displayed with the value origin.

  Thus, the user can easily adjust the white balance according to his / her preference for each display mode. Therefore, the user can set an optimum white balance for each of the plurality of display modes.

  Note that a television receiver including the display device is also included in the scope of the present invention.

  The object of the present invention can also be achieved by a program for causing a computer to operate as the display device. And not only such a program itself but the computer-readable recording medium on which such a program is recorded is also contained under the category of the present invention.

  As described above, the display device according to the present invention includes an adjustment window generating means for generating an adjustment window for adjusting the white balance of a display image in the display device operating in a plurality of display modes, and the adjustment window generation. Display means for displaying the adjustment window generated by the means, and adjustment means for adjusting white balance with the adjustment value specified by the user as a target point on the adjustment window, wherein the adjustment window includes white balance The adjustment value is a plane whose origin is the initial value of white balance in the selected display mode, and has a first axis indicating the first adjustment direction and an adjustment direction different from the first adjustment direction. It is characterized by being shown on a plane stretched by the second axis shown.

  The display device adjustment method according to the present invention is a white balance adjustment method for a display device that operates in a plurality of display modes as described above, and an adjustment window for adjusting the white balance of a display image. An adjustment window generating step for generating the image, a display step for displaying the adjustment window generated in the adjustment window generating step, and an adjustment for adjusting the white balance with the adjustment value specified by the user on the adjustment window as a target point The adjustment window is a plane whose origin is the initial value of the white balance in the selected display mode, and the first axis indicating the first adjustment direction. A flat surface stretched by a second axis indicating an adjustment direction different from the first adjustment direction. Those shown above, it is characterized in that.

  Therefore, the user can set an optimum white balance for each of the plurality of display modes.

It is a block diagram which shows the outline of a structure of the television which concerns on one Embodiment of this invention. It is a figure which shows the structure of the remote control which concerns on one Embodiment of this invention. It is a figure which shows an example of the adjustment value setting window which concerns on one Embodiment of this invention. It is a figure which shows an example of the color setting of the icon displayed in the adjustment value setting area | region of the adjustment value setting window which concerns on one Embodiment of this invention. It is a figure which shows an example of the icon displayed on the adjustment value setting window which concerns on one Embodiment of this invention. It is a screen transition diagram which shows the display process of the adjustment value setting window in one Embodiment of this invention. It is a flowchart which shows the flow of a display process of the adjustment value setting window in one Embodiment of this invention. It is a graph which shows an example of the relationship between the black body radiation direction and orthogonal direction in a CIExy chromaticity diagram, and the setting range of the adjustment value for every AV mode. It is a screen transition diagram which shows the movement of the adjustment value setting window in the OSD movement mode of the television according to the present embodiment. It is a flowchart which shows the flow of a display process of the adjustment value setting window in the modification of one Embodiment of this invention. It is a figure which shows an example of the display screen as which the adjustment value setting window which has a white frame is superimposed and displayed on a still image in the adjustment value setting mode in the other modification of one Embodiment of this invention. It is a figure which shows an example of the display screen on which an adjustment value setting window and a white image are superimposed and displayed on a different position of a still image in the adjustment value setting mode in another modified example of one embodiment of the present invention. It is a figure which shows an example of the adjustment value setting area | region displayed on the adjustment value setting window which concerns on the further another modification of one Embodiment of this invention. It is a figure which shows another example of the adjustment value setting area | region displayed on the adjustment value setting window which concerns on the further another modification of one Embodiment of this invention. It is a figure which shows another example of the adjustment value setting area | region displayed on the adjustment value setting window which concerns on the further another modification of one Embodiment of this invention. It is a figure which shows another example of the adjustment value setting area | region displayed on the adjustment value setting window which concerns on the further another modification of one Embodiment of this invention. It is a state transition diagram which shows the change of the color of each icon displayed on the adjustment value setting area | region of the adjustment value setting window which concerns on the other modification of one Embodiment of this invention. It is a graph which shows the color on the CIExy chromaticity diagram of each icon displayed in the adjustment value setting area of the adjustment value setting window according to still another modification of the embodiment of the present invention.

  A display device according to an embodiment of the present invention will be described with reference to FIGS. However, unless otherwise specified, the configuration described in this embodiment is not merely intended to limit the scope of the present invention, but is merely an illustrative example. The display device according to the present embodiment will be described as an example in which the display device is realized as a part of a television receiver (hereinafter also simply referred to as a television). However, the present embodiment is not limited to this. Instead, the display device can also be used in personal computers, car navigation systems, mobile phones, smartphones, tablet PCs, and the like.

[Display system]
First, the configuration of a display system and a television (display device) according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing an outline of the configuration of the television 10 according to the present embodiment.

  As shown in FIG. 1, the display system 1 according to the present embodiment includes a television 10 that plays back content and a remote controller (remote controller) 20. Note that the content is data including a moving image, a still image, audio, and the like.

(TV configuration)
Next, the configuration of the television 10 will be described with reference to FIG. As shown in FIG. 1, the television 10 includes an external input terminal 101, a terrestrial digital broadcast tuner 102, a satellite broadcast tuner 103, a recording / playback unit 104, a BD drive 105, a video selector 106, a video processing circuit (adjusting means) 107, an OSD. (On-Screen Display) generation unit (adjustment window generation means) 10
8. LCD controller (display means) 109, LCD (Liquid Crystal Display) 110, audio selector 111, audio processing circuit 112, amplifier 113, speaker 114, USB (Universal Serial Bus) interface 115, ROM 116, RAM 117, CPU 118, infrared light reception A unit 119, a camera 120, and an HD drive 121. In FIG. 1, the video signal path is indicated by a solid line, the audio signal path is indicated by a one-dot chain line, and the data (control) path (bus) is indicated by a bold line.

The external input terminal 101 includes a video input terminal 101a and an audio input terminal 101b. The video input terminal 101a is for inputting a video signal, and is, for example, a DVI terminal. The audio input terminal 101b is for inputting an audio signal, and is, for example, an S / PDIF terminal. However, the external input terminal 101 is not limited to this, and may be an HDMI terminal in which the video input terminal 101a and the audio input terminal 101b are integrated.

  The terrestrial digital broadcast tuner 102 is a tuner for receiving a broadcast program broadcast by terrestrial digital broadcast. The terrestrial digital broadcast tuner 102 includes, for example, an RF unit that converts a received signal into an analog baseband signal, an ADC unit that converts an analog baseband signal into a digital baseband signal, a demodulation unit that demodulates an MPEG2 stream from the digital baseband signal, And it can be comprised by the decoding part which decodes a video signal and an audio | voice signal from an MPEG2 stream.

  The MPEG2 stream demodulated by the terrestrial digital broadcast tuner 102 is supplied to the recording / playback unit 104 via the bus. The video signal and audio signal decoded by the terrestrial digital broadcast tuner 102 are supplied to the video selector 106 and the audio selector 111, respectively. Note that the CPU 118 controls which channel the terrestrial digital broadcast tuner 102 selects as a demodulation target.

  The digital terrestrial broadcast tuner 102 is preferably a double tuner that can simultaneously demodulate two MPEG2 streams broadcast via different channels. In this case, the terrestrial digital broadcast tuner 102 supplies the MPEG2 stream broadcast via the first channel selected as the channel to be selected to the recording / playback unit 104, and the video signal and audio signal decoded from the MPEG2 stream. Is supplied to the video selector 106 and the audio selector 111. Also, the terrestrial digital broadcast tuner 102 supplies the MPEG2 stream broadcast via the second channel selected as the recording target channel to the recording / playback unit 104.

  Of course, the terrestrial digital broadcast tuner 102 according to the present invention is not limited to a double tuner, and may be, for example, a single tuner or a plurality of tuners including three or more tuners. When the terrestrial digital broadcast tuner 102 is a single tuner, the MPEG2 stream representing the broadcast program can be supplied to the recording / playback unit 104 only when the user is not viewing the broadcast program. Further, when the digital terrestrial broadcasting tuner 102 is configured by a plurality of tuners, each channel, each broadcast wave, or each viewer (for example, a father, a mother, a child, etc.) via a different channel. An MPEG2 stream representing a broadcast program to be broadcast can be supplied to the recording / playback unit 104.

  The satellite broadcast tuner 103 is a tuner for receiving a broadcast program broadcast by satellite broadcast. The satellite broadcast tuner 103 includes, for example, an RF unit that converts a received signal into an analog baseband signal, an ADC unit that converts an analog baseband signal into a digital baseband signal, a demodulation unit that demodulates an MPEG2 stream from the digital baseband signal, and The decoding unit can decode the video signal from the MPEG2 stream.

  The MPEG2 stream demodulated by the satellite broadcast tuner 103 is supplied to the recording / playback unit 104. The video signal and audio signal decoded by the satellite broadcast tuner 103 are supplied to the video selector 106 and the audio selector 111, respectively. Note that the CPU 118 selects which channel the satellite broadcast tuner 103 demodulates the MPEG2 data stream transmitted through.

Note that the satellite broadcast tuner 103 in this embodiment is preferably a double tuner that can simultaneously receive two broadcast programs broadcast via different channels, like the terrestrial digital broadcast tuner 102.

  The recording / playback unit 104 includes a recording unit and a playback unit. The recording unit acquires the MPEG2 stream from either the terrestrial digital broadcast tuner 102 or the satellite broadcast tuner 103, and writes the acquired MPEG2 stream to the recording device. The recording unit records the MPEG2 stream on the BD drive 105 built in the television 10, the HD drive 121 built in the television 10, and the USB-HD (hard disk) drive 30 connected to the USB interface 115. It can be used as a recording device. The reproduction unit reads the MPEG2 stream from the recording device, and decodes the video signal and the audio signal from the read MPEG2 stream. The video signal and audio signal decoded by the reproduction unit are supplied to the video selector 106 and the audio selector 111, respectively.

  The video selector 106 is supplied with the four types of video signals described above. That is, (1) a video signal input from the external input terminal 101 (particularly the video input terminal 101a), (2) a video signal decoded by the terrestrial digital broadcast tuner 102, and (3) decoded by the satellite broadcast tuner 103. And (4) the video signal decoded by the recording / playback unit 104 (particularly the playback unit). The video selector 106 selects any one of the video signals (1) to (4). The video signal selected by the video selector 106 is supplied to the video processing circuit 107. Note that the CPU 118 controls which video signal the video selector 106 selects.

  The video processing circuit 107 performs image quality adjustment processing and white balance adjustment processing on the video signal supplied from the video selector 106. The video processing circuit 107 performs scaling processing on the video signal supplied from the video selector 106.

  Here, the image quality adjustment processing refers to, for example, changing at least one of the luminance, sharpness, and contrast of the video represented by the video signal by processing the video signal.

  Further, the white balance adjustment process in the present embodiment refers to a process of adjusting the gain of each RGB color by the video processing circuit 107 so that the white color displayed on the television 10 becomes a white color desired by the user.

  Furthermore, the video processing circuit 107 sets a target point on the CIExy chromaticity diagram (xy chromaticity diagram) corresponding to the adjustment value designated by the user with the adjustment value setting cursor on the adjustment value setting window (adjustment window) described later. It has a function as an adjusting means for adjusting the target white balance.

  Scaling processing refers to expanding or reducing the size of the video represented by the video signal by processing the video signal. Examples of the enlargement and reduction of the image size include enlargement and reduction that maintains the aspect ratio, enlargement and reduction that does not maintain the aspect ratio, and non-linear enlargement that enlarges the peripheral portion without changing the central portion of the image. Can be cited as an example.

  The video signal processed by the video processing circuit 107 is supplied to the LCD controller 109. Note that the CPU 118 controls how the image processing circuit 107 changes the image quality and size.

In addition, the video processing circuit 107 changes the image quality adjustment process and the white balance adjustment process performed on the video signal supplied from the video selector 106 according to the AV mode (display mode). Although the AV mode will be described later, which AV mode is selected is controlled by the CPU 118.

  Further, the video processing circuit 107 generates a still image of the video being displayed. Specifically, the video processing circuit 107 generates a still image from the video signal supplied from the video selector 106 when an instruction to generate a still image is notified from the CPU 118.

  The video processing circuit 107 also supplies the OSD data supplied from the OSD generation unit 108 to a video signal that has been subjected to at least one of image quality adjustment processing, white balance adjustment processing, and scaling processing, or a generated still image. Are superimposed and supplied to the LCD controller 109.

  The OSD generation unit 108 generates (renders) an OSD image from the OSD data supplied from the CPU 118. Examples of the OSD image generated by the OSD generation unit 108 include an electronic program guide. As the OSD data, for example, SVG (Scalable Vector Graphics) can be used. The OSD image generated by the OSD generation unit 108 is supplied to the video processing circuit 107, superimposed on the video signal by the video processing circuit 107, and supplied to the LCD controller 109.

  The OSD generation unit 108 also generates an adjustment value setting window that is an OSD image for presenting a white balance adjustment value used for white balance adjustment processing by the video processing circuit 107 to the user. The adjustment value setting window will be described later.

  Based on the video signal supplied from the video processing circuit 107, the LCD controller 109 drives the LCD 110 to display the video represented by the video signal. In addition, when the OSD image is supplied from the OSD generation unit 108, the LCD controller 109 displays the video represented by the video signal based on the video signal supplied from the video processing circuit 107 superimposed on the OSD image. The LCD 110 is driven to display.

  The above-described four types of audio signals are supplied to the audio selector 111. That is, (1) an audio signal input from the external input terminal 101 (particularly the audio input terminal 101b), (2) an audio signal decoded by the terrestrial digital broadcast tuner 102, and (3) decoded by the satellite broadcast tuner 103. And (4) the audio signal decoded by the recording / playback unit 104 (particularly the playback unit). The audio selector 111 selects any one of the audio signals (1) to (4).

  The audio signal selected by the audio selector 111 is supplied to the audio processing circuit 112. Note that the CPU 118 controls which audio signal the audio selector 111 selects. However, the selection of the video in the video selector 106 and the selection of the audio in the audio selector 111 are interlocked. For example, when the video selector 106 selects the video signal supplied from the terrestrial digital broadcast tuner 102, the audio is selected. The selector 111 also selects the audio signal supplied from the terrestrial digital broadcast tuner 102.

The audio processing circuit 112 performs volume adjustment processing on the audio signal supplied from the audio selector 111. The audio processing circuit 112 performs sound quality adjustment processing on the audio signal supplied from the audio selector 111. Here, the volume adjustment processing refers to changing the volume of the voice represented by the voice signal by processing the voice signal. The sound quality adjustment process refers to changing the frequency characteristics of the sound represented by the sound signal by processing the sound signal (for example, low frequency emphasis or high frequency emphasis). The audio signal processed by the audio processing circuit 112 is supplied to the amplifier 113. Note that the CPU 118 controls how the sound processing circuit 112 changes the sound volume and sound quality.

  Based on the audio signal supplied from the audio processing circuit 112, the amplifier 113 drives the speaker 114 so as to output the audio represented by the audio signal.

  The CPU 118 controls each of the above units according to the remote control signal received by the infrared light receiving unit 119 and the image captured by the camera 120. Control using the infrared light receiving unit 119 includes, for example, control for switching the reception channels of the terrestrial digital broadcast tuner 102 and the satellite broadcast tuner 103 according to a remote control signal, a video signal selected by the video selector 106 and the audio selector 111, and For example, control for switching an audio signal in accordance with a remote control signal. Examples of the control using the camera 120 include control for switching how the image quality is adjusted by the video processing circuit 107 in accordance with the viewer specified based on the captured image.

  The CPU 118 has a function of creating a broadcast program table from EPG (Electronic Program Guide) data provided from each broadcasting station, and a function of creating a recommended program table from the broadcast program table and viewing history. . The broadcast program table and the recommended program table created by the CPU 118 will be described later with reference to different drawings. Note that the EPG data provided from each broadcasting station may be acquired using, for example, the terrestrial digital broadcasting tuner 102 or the satellite broadcasting tuner 103, or may be transmitted to the Internet via an Ethernet (registered trademark) interface (not shown). You may acquire from the connected server.

  Further, the CPU 118 switches an AV mode that is a mode for reproducing a video signal. Specifically, it notifies the video processing circuit 107 of a mode switching signal for switching the AV mode.

  The AV mode includes, for example, a dynamic mode, a user mode, a movie mode, a dynamic fix mode (hereinafter referred to as DF mode), and the like. Note that examples of the AV mode switching method include a method of switching by a user operation and a method of switching depending on the content genre indicated by the video signal. In the case of a configuration in which the AV mode is switched depending on the content genre, for example, when the content genre is a movie, the CPU 118 may switch the AV mode to the movie mode.

  As the AV mode, for example, a standard mode that is a standard mode when a viewer views at home, and a game mode that is a mode when a game machine or the like is connected to the TV 10 and used. Etc. may be further included.

  Further, when the television 10 is placed in a store, the CPU 118 may switch to the DF mode regardless of the genre of the content indicated by the video signal. In the case of the DF mode, the CPU 118 notifies the video processing circuit 107 that the image quality adjustment process and the white balance adjustment process in the video processing circuit 107 are executed with preset values. That is, the DF mode is a mode in which setting of adjustment values referred to by the user for image quality adjustment processing and white balance adjustment processing is not accepted.

  Furthermore, the CPU 118 notifies the OSD generation unit 108 of a setting window generation signal for generating an adjustment value setting window. The setting window generation signal is notified, for example, when a remote control signal indicating a predetermined user instruction is acquired from the remote control 20 via the infrared light receiving unit 119.

  In addition, the CPU 118 notifies the video processing circuit 107 of a still image generation signal for generating a still image of the displayed video. The still image generation signal is notified when, for example, a remote control signal indicating a predetermined user instruction is acquired from the remote control 20 via the infrared light receiving unit 119.

  In the present embodiment, a single button provided on the remote controller 20 is pressed for a remote control signal indicating a predetermined user instruction transmitted from the remote controller 20 to generate an adjustment value setting window and a still image. This is a remote control signal indicating that

  The ROM 116 is a readable and non-writable memory in which fixed data such as a program executed by the CPU 118 is stored. On the other hand, the RAM 117 is a readable and writable memory in which variable data such as data referenced by the CPU 118 for calculation and data generated by the CPU 118 is stored. For example, a broadcast program table and a recommended program table are stored in the RAM 117.

  The USB interface 115 is an interface for connecting an external device by wire, and specifically, an interface for connecting a USB device to the television 10. Typical USB devices that can be connected to the television 10 are recording devices such as a USB-HD drive 30, a BD drive, and a DVD drive.

  Further, an interface for connecting an external device is not limited to the USB interface 115. That is, the USB interface 115 can be replaced with a wired connection interface such as ATA (Advanced Technology Attachment), ATAPI (ATA Packet Interface), IEEE 1394, HDMI (High-Definition Multimedia Interface), and LAN. is there. When an SD card is connected, this SD card may be used as an external device. In short, any interface may be used for connecting an external device.

  In the present embodiment, as a terrestrial digital broadcasting method, a method of multiplexing MPEG2 streams (ATSC method in the United States, ISDB-T method in Japan, etc.) is assumed, but the present invention is not limited to this. It is not something. That is, for example, instead of multiplexing MPEG2 streams, the present invention can also be applied to a system that multiplexes MPEG4 streams and the like (DVB-T / DVB-T2 system in Europe, etc.). In the latter case, the demodulated MPEG4 stream may be recorded on the recording medium as it is, or the demodulated MPEG4 stream may be converted into an MPEG2 stream and recorded on the recording medium.

(Remote controller)
Next, the configuration of the remote controller 20 will be described with reference to FIG. FIG. 2 is a diagram illustrating a configuration of the remote controller 20 according to the present embodiment.

  As shown in FIG. 2, in addition to the power button and the numeric buttons, the remote controller 20 includes a cross key 201, an enter key 202, a return (RETURN) key 203, a freeze key (single button). ) 204 and color buttons (operation buttons). The color buttons include an R (red) button 205, a G (green) button 206, a Y (yellow) button 207, and a B (blue) button 208.

  When any one of the buttons is pressed, the remote controller 20 transmits a remote control signal corresponding to the pressed button to the television 10 via an infrared transmission unit (not shown).

  When pressed, freeze key 204 accepts a user instruction (predetermined user instruction) to cause television 10 to execute an adjustment value setting process (also referred to as an adjustment value setting mode) for setting an adjustment value for white balance. When the freeze key 204 is pressed, the remote controller 20 performs a remote control signal for executing an adjustment value setting process for determining a white balance adjustment value to the television 10 (hereinafter also referred to as an adjustment value setting mode execution instruction). Send.

(Adjustment value setting window)
Next, an adjustment value setting window for determining an adjustment value referred to in the white balance adjustment processing in the video processing circuit 107 will be described with reference to FIG. FIG. 3 is a diagram showing an example of the adjustment value setting window 50 according to the present embodiment.

  The adjustment value setting window 50 in the present embodiment is displayed when the freeze key 204 provided on the remote controller 20 is pressed, that is, when an adjustment value setting mode execution instruction is acquired from the remote controller 20.

  As shown in FIG. 3, the adjustment value setting window 50 includes an adjustment value setting area 501 and an adjustment value setting cursor (adjustment value) 502. In addition, below the adjustment value setting area 501 of the adjustment value setting window 50, description of the function of each button provided on the remote controller 20 when the adjustment value setting window 50 is displayed (any button is pressed). In this case, an explanation of which operation is executed in the television 10) is displayed.

  The horizontal axis (first axis: showing the first adjustment direction) shown in the adjustment value setting area 501 corresponds to the black body radiation direction (so-called color temperature direction) in the CIExy chromaticity diagram, and the vertical axis (Second axis: indicates the second adjustment direction) corresponds to the uniform color temperature direction in the CIExy chromaticity diagram. In other words, the adjustment value setting area 501 includes a plane stretched by the horizontal axis indicating the black body radiation direction in the CIExy chromaticity diagram and the vertical axis orthogonal to the horizontal axis and indicating the uniform color temperature direction. It is out.

  An intersection (hereinafter also referred to as an adjustment origin) between the black body radiation direction and the color matching temperature direction is an initial value of white balance in the selected AV mode. Although the details will be described later, the value of the adjustment origin (origin) is different for each AV mode.

  In addition, icons indicating colors that increase in color in white balance adjustment are displayed at both ends of the horizontal axis and the vertical axis displayed in the adjustment value setting area 501. For example, an icon including an image simulating a pale yellow sun is displayed at the end in the positive direction of the horizontal axis (the right side of the horizontal axis in FIG. 3). Also, each end of the negative direction of the horizontal axis (left side of the horizontal axis in FIG. 3), the positive direction of the vertical axis (upper side of the vertical axis in FIG. 3), and the negative direction of the vertical axis (lower side of the vertical axis in FIG. 3). Are displayed with icons including images simulating the pale blue, pale green, and pale red suns, respectively.

  The adjustment value setting cursor 502 is an icon indicating a white balance adjustment value. The adjustment value setting cursor 502 moves in the adjustment value setting area 501 in accordance with a user operation of pressing any one of the cross keys 201 provided on the remote controller 20.

  Below the adjustment value setting area 501, it is displayed that the enter key 202 provided on the remote controller 20 functions as “STORE”. Note that “STORE” refers to a function of saving a value corresponding to the position in the adjustment value setting area 501 currently indicated by the adjustment value setting cursor 502 as a white balance adjustment value, for example.

  Further, it is displayed that the R button 205 functions as “DISP OFF”. Note that “DISP OFF” refers to, for example, a function for switching between display and non-display of the adjustment value setting window 50.

  Further, below the adjustment value setting area 501, it is displayed that the G button 206 functions as “RESET”, the B button 208 functions as “EXIT”, and the Y button 207 functions as “OSD MOVE”.

  “RESET” means, for example, that the position of the current adjustment value setting cursor 502 is reset, and the position of the adjustment value setting cursor 502 determined by the R button 205 pressed immediately before the G button 206 is pressed. This is a function for moving the adjustment value setting cursor 502. “EXIT” refers to a function for terminating the adjustment value setting mode, and “OSD MOVE” refers to a transition to the OSD movement mode in which the television 10 is moved to the position of the adjustment value setting window 50 displayed on the LCD 110. This is the function to be

  The return key 203 functions as “EXIT” for ending the adjustment value setting mode, as with the B button 208.

  When the B button 208 functioning as “EXIT” or the return key 203 is pressed, the television 10 may end the display of the still image and resume the display of the video. Specifically, when a remote control signal indicating that the B button 208 or the return key 203 is pressed is acquired via the infrared light receiving unit 119, the still image display is terminated and the video display is resumed. The CPU 118 may control the video processing circuit 107.

(Icon color setting)
Next, setting of the color of the icon displayed on both ends of the horizontal axis and the vertical axis displayed in the adjustment value setting area 501 will be described with reference to FIG. FIG. 4 is a diagram showing an example of icon color settings displayed in the adjustment value setting area 501.

  As shown in FIGS. 4A and 4B, an icon on the upper side of the vertical axis (upward icon in FIG. 4B) is icon 1 (third light color icon). Further, the icon on the lower side of the vertical axis (downward icon in FIG. 4B) is the icon 2 (fourth light color icon), and the icon on the right side of the horizontal axis (rightward icon in FIG. 4B) is the icon. 3 (first light color icon), and the icon on the left side of the horizontal axis (left direction icon in FIG. 4B) is icon 4 (second light icon).

  The size of the icons 1 to 4 may be, for example, about 40 pix × 40 pix as shown in FIG. 4A, but is not limited to this.

  The icon 1 is a light green icon, and the color settings thereof are R = 0.89, G = 1.00, and B = 0.93, as shown in FIG. 4B. The icon 2 is a light red icon, and its set values are R = 1.00, G = 0.91, and B = 0.97. The icon 3 is a light yellow icon, and its set values are R = 1.00, G = 0.99, and B = 0.96. The icon 4 is a light blue icon, and the set values are R = 0.88, G = 0.92, and B = 1.00.

The color of icon 1 is a light color corresponding to a chromaticity having a positive deviation from a black body radiation locus to be described later in the CIEcy chromaticity diagram, and the color of icon 2 has a negative deviation from the black body radiation locus. The color of the icon 3 is a light color corresponding to the low temperature chromaticity along the black body radiation locus, and the color of the icon 4 is the high temperature along the black body radiation locus. It can also be expressed as a light color corresponding to the chromaticity.

  Thus, by making each icon light, the user can easily recognize the difference from the color buttons (R button 205, G button 206, Y button 207, and B button 208) provided on the remote controller 20. can do. Accordingly, it is possible to reduce the possibility that the user mistakenly recognizes that each color button corresponds to each icon as compared with the case where the color of the icon and the color of the color button are the same. Therefore, when the user tries to move the adjustment value setting cursor 502, it is possible to reduce an erroneous operation of erroneously pressing the color button instead of the cross key.

  In the present embodiment, the case where the color setting of each icon is the color setting shown in FIG. 4B has been described as an example, but the present invention is not limited to this. The colors of the four icons are not the same color as the four color buttons, but can be any colors that can be identified when the adjustment value setting cursor 502 is moved in the direction of each icon. There is no particular limitation.

  Further, the icon pattern is not limited to the pattern imitating the sun as shown in FIG. For example, an icon as shown in FIG. 5 may be used. FIG. 5 is a diagram illustrating an example of icons displayed in the adjustment value setting window 50.

  For example, as shown in FIG. 5A, the icon displayed in the adjustment value setting window 50 may be an icon having no pattern and only a color that has been set (single color icon). Further, as shown in FIG. 5B, the icon displayed in the adjustment value setting window 50 may be an icon including a color flower image with a color set.

  Further, since the user's skin color is the most noticeable by the user, an icon imitating the face of the person having the color set is displayed as the icon displayed in the adjustment value setting window 50. A configuration may be adopted.

(Adjustment value setting window display process)
Next, display processing of the adjustment value setting window 50 will be described with reference to FIGS. FIG. 6 is a screen transition diagram showing display processing of the adjustment value setting window 50 in the present embodiment. FIG. 7 is a flowchart showing the flow of the adjustment value setting window 50 display process.

  When the television 10 obtains an adjustment value setting mode execution instruction that is a remote control signal indicating that the user has pressed the freeze key 204 provided on the remote control 20 in a state where an image is displayed, the adjustment value setting window 50 display processes are executed.

  When the freeze key 204 is pressed, the television 10 displays the still image and the adjustment value setting window 50 on the LCD 110 almost simultaneously as shown in FIG. 7 (step S101).

  Specifically, when the adjustment value setting mode execution instruction is acquired, the CPU 118 notifies the video processing circuit 107 that a still image of the displayed video is to be generated. The video processing circuit 107 generates a still image according to the notification from the CPU 118.

  When the adjustment value setting mode execution instruction is acquired, the CPU 118 notifies the OSD generation unit 108 that the adjustment value setting window 50 is to be generated. The OSD generation unit 108 generates the adjustment value setting window 50 in accordance with the notification from the CPU 118 and supplies it to the video processing circuit 107.

  The video processing circuit 107 supplies the still image and adjustment value setting window 50 to the LCD controller 109. The LCD controller 109 drives the LCD 110 to display an adjustment value setting window superimposed on a still image. As a result, as shown in FIG. 6A, the adjustment value setting window 50 is displayed superimposed on the still image.

  Further, the television 10 determines whether or not the user has pressed the R button 205 of the remote controller 20 in a state where the still image and the adjustment value setting window 50 are displayed (step S102). Note that when the R button 205 is not pressed (NO in step S102), the television 10 repeats the determination in S102. In other words, the television 10 repeats the determination in step S102 until the R button 205 is pressed.

  When the R button 205 is pressed (YES in step S102), the television 10 hides the display of the adjustment value setting window 50 (step S103). Specifically, when receiving a remote control signal indicating that the R button 205 has been pressed, the CPU 118 instructs the OSD generation unit “108 to stop supplying the adjustment value setting window 50 to the LCD controller 109. The OSD generation unit 108 stops the supply of the adjustment value setting window 50 to the LCD controller 109 in accordance with the notification from the CPU 118, and thereby the adjustment value setting window 50 is not displayed.

When the adjustment value setting window 50 is not displayed, only a still image may be displayed on the LCD 110. For example, an OSD “FREEZER DISP ON” is displayed at the bottom of the display area of the LCD 110, for example. May be displayed. By displaying the OSD “FREEZE R DISP ON”, the user can easily recognize that the adjustment value setting window 50 is switched to the display state by pressing the R button 205.

  Further, the television 10 determines whether or not the user has pressed the R button 205 of the remote controller 20 in a state where only a still image is displayed (step S104). Note that when the R button 205 is not pressed (NO in step S104), the television 10 repeats the determination in step S104. In other words, the television 10 repeats the determination in step S104 until the R button 205 is pressed.

  When the R button 205 is pressed (YES in step S104), the television 10 displays the adjustment value setting window 50 again (step S105). Specifically, upon receiving a remote control signal indicating that the R button 205 has been pressed, the CPU 118 instructs the OSD generation unit “108 to resume supplying the adjustment value setting window 50 to the LCD controller 109. The OSD generation unit 108 resumes the supply of the adjustment value setting window 50 to the LCD controller 109 in accordance with the notification from the CPU 118, whereby the adjustment value setting window 50 is displayed on the LCD 110.

  According to the configuration described above, the user can display the still image and the adjustment value setting window 50 superimposed on the still image only by pressing the button (freeze key) provided on the remote controller 20 once. it can. Therefore, the user can start the white balance adjustment operation with a simple operation.

(White balance adjustment value setting mode)
Next, processing in the white balance adjustment value setting mode will be described. First, the case where the AV mode is a mode other than the DF mode will be described as an example.

  When freeze key 204 provided on remote controller 20 is pressed, an instruction to execute adjustment value setting mode is input to television 10. When the adjustment value setting mode execution instruction is acquired, the television 10 displays the still image and the adjustment value setting window 50 on the LCD 110 as described above. When the still image and adjustment value setting window 50 is displayed on the LCD 110, the television 10 gives an instruction to move the adjustment value setting cursor 502 in the adjustment value setting window 50, which is performed when the user operates the cross key 201 provided in the remote controller 20. Accept.

  When the movement instruction of the adjustment value setting cursor 502 is acquired from the remote controller 20, the CPU 118 notifies the OSD generation unit 108 that the adjustment value setting window 50 in which the adjustment value setting cursor 502 has moved in the direction indicated by the movement instruction is generated. . Further, the CPU 118 notifies the video processing circuit 107 that the white balance of the still image is adjusted with the white balance adjustment value corresponding to the position in the adjustment value setting area 501 after the adjustment value setting cursor 502 is moved. .

  When the adjustment value setting cursor 502 moves to the left (the icon 3 in FIG. 4A) from the position in the adjustment value setting area 501 before the movement, the color temperature in the adjustment value increases and the right (see FIG. When moving in the direction of the icon 4) in 4 (a), the color temperature at the adjustment value decreases. When the adjustment value setting cursor 502 moves in the upward direction (icon 1 in FIG. 4A), the deviation from the black body radiation locus of the equal color temperature in the adjustment value increases in the positive direction. When moving in the direction (icon 2 in FIG. 4A), the deviation from the black body radiation locus of the equal color temperature in the adjustment value increases in the negative direction.

  Also, the white balance of still images is adjusted so that the blue tint increases relatively when the color temperature at the adjustment value increases, and the yellow tint increases relatively when the color temperature decreases. Is done. Further, the white balance of the still image is adjusted so that the green color is relatively increased when the deviation from the black body radiation locus of the equal color temperature in the adjustment value increases in the positive direction. When the deviation from the body radiation locus increases in the negative direction, the red color is adjusted to increase relatively.

  The LCD controller 109 displays the adjustment value setting window 50 generated by the OSD generation unit 108 after the adjustment value setting cursor 502 is moved and superimposed on the still image whose white balance has been adjusted by the video processing circuit 107. The LCD 110 is driven. As a result, the still image after white balance adjustment (adjusted still image) and the adjustment value setting window 50 after moving the adjustment value setting cursor 502 (setting window after moving the cursor) are displayed on the LCD 110.

  The CPU 118 accepts a new remote control signal from the remote controller 20 in a state where the adjusted still image and the setting window after the cursor movement are displayed.

  For example, when receiving a remote control signal indicating that the cross key 201 is further pressed, the television 10 corresponds to a position in the adjustment value setting area 501 after the adjustment value setting cursor 502 is further moved by the above-described operation. Adjust the white balance of the still image using the white balance adjustment value. The LCD 110 displays an adjusted still image in which the white balance is further adjusted, and a post-cursor setting window in which the adjustment value setting cursor 502 is further moved.

When receiving a remote control signal indicating that the enter key 202 is pressed, the CPU 118 adjusts the adjustment value corresponding to the position in the adjustment value setting area 501 of the adjustment value setting cursor 502 when the enter key 202 is pressed. Are determined as white balance adjustment values. The determined white balance adjustment value may be stored in the RAM 117, for example.

  When the CPU 118 receives a remote control signal indicating that the R button 205 has been pressed, the CPU 118 temporarily stops the adjustment value setting mode and hides the adjustment value setting window 50 by the above-described operation. When receiving a remote control signal indicating that the R button 205 is pressed while the adjustment value setting window 50 is not displayed, the CPU 118 redisplays the adjustment value setting window 50 and resumes the adjustment value setting mode. .

  Upon receiving a remote control signal indicating that the G button 206 has been pressed, the CPU 118 resets the position of the adjustment value setting cursor 502 that has been moved by pressing the cross key 201 and is determined immediately before the G button 206 is pressed. The adjustment value setting cursor 502 is moved to a position in the adjustment value setting area 501 corresponding to the adjusted value. Specifically, when CPU 118 receives a remote control signal indicating that G button 206 has been pressed, CPU 118 moves adjustment value setting cursor 502 within adjustment value setting area 501 corresponding to the latest adjustment value stored in RAM 117. Move to the position.

  When receiving a remote control signal indicating that the B button 208 has been pressed, the CPU 118 ends the white balance adjustment value setting mode. Specifically, the CPU 118 ends the display of the still image and the adjustment value setting window 50 and notifies the video processing circuit 107 and the OSD generation unit 108 of an instruction to display the video. The video processing circuit 107 and the OSD generation unit 108 end the supply of the still image and the adjustment value setting window 50 to the LCD controller 109 according to the notification from the CPU 118, and the video processing circuit 107 supplies the video to the LCD controller 109. To resume.

  The white balance adjustment value setting mode is also terminated when, for example, the volume button for adjusting the volume of the output audio and the channel button for switching the channel to be selected are pressed instead of the B button 208. May be.

  In addition, when the volume button or the channel button is pressed, the white balance adjustment value setting mode may be temporarily interrupted instead of ending the white balance adjustment value setting mode. For example, when the volume button is pressed, the display of the adjustment value setting window 50 may be interrupted, and a volume bar indicating the volume of the sound output from the speaker 114 may be displayed.

  In this case, after the volume bar is displayed, if the volume button is not pressed for a certain period (for example, 3 seconds), the display of the adjustment value setting window 50 is terminated and the display of the volume bar is terminated. By re-meeting, the white balance adjustment value setting mode may be resumed.

  Further, upon receiving a remote control signal indicating that the Y button 207 has been pressed, the television 10 transitions to an OSD movement mode in which the position of the adjustment value setting window 50 displayed on the LCD 110 is moved. The OSD movement mode will be described later.

  Note that acquisition of a remote control signal indicating that each button (key) provided in the remote controller 20 has been pressed is not limited to the order described above. It is up to the user which button is pressed at which timing in the adjustment value setting mode.

According to the above-described configuration, the user can confirm the entire still image with the white balance adjusted while the adjustment value setting window 50 is hidden only by pressing a button provided on the remote controller 20 once. can do. Further, the user can easily return the white balance adjustment value to the adjustment value determined immediately before by pressing the button provided on the remote controller 20 once.

  Next, the case where the AV mode is the DF mode that does not accept white balance adjustment will be described as an example.

  When freeze key 204 provided on remote controller 20 is pressed, an instruction to execute adjustment value setting mode is input to television 10. When the adjustment value setting mode execution instruction is acquired, the television 10 shifts the AV mode from the DF mode to the dynamic mode in which white balance adjustment can be accepted, and also sets a still image and adjustment value on the LCD 110 as described above. A window 50 is displayed. When the still image and adjustment value setting window 50 is displayed on the LCD 110, the television 10 gives an instruction to move the adjustment value setting cursor 502 in the adjustment value setting window 50, which is performed when the user operates the cross key 201 provided in the remote controller 20. Accept.

  Note that the operation of the television 10 when acquiring a remote control signal indicating that each button provided in the remote controller 20 is pressed is the same as the processing in the adjustment value setting mode described above, and thus the description thereof is omitted.

  In addition, when the television 10 is displaying an image in the storefront mode, if the transition is made from the DF mode to the dynamic mode in response to the adjustment value setting mode execution instruction, the transition to the DF mode is made again if the non-operation state continues for a certain period. A configuration may be adopted. Examples of the fixed period include 5 minutes.

(Adjustable value setting range)
Next, a range of values in the black body radiation direction and the equal color temperature direction displayed in the adjustment value setting area 501, that is, a range of adjustment values that can be set in the adjustment value setting mode (hereinafter also referred to as a settable range). Will be specifically described with reference to FIG. Note that the settable range varies depending on the AV mode. FIG. 8 is a graph showing an example of the relationship between the black body radiation direction and the equal color temperature direction in the CIExy chromaticity diagram and the adjustable value setting range for each AV mode.

  In FIG. 8, the curve with the symbol BRL represents a black body radiation locus. That is, all chromaticity points located on the blackbody radiation locus BRL have a blackbody radiation spectrum, and different chromaticity points on the blackbody radiation locus BRL have different blackbody radiation temperatures. It corresponds. In FIG. 8, a plurality of thin broken lines intersecting the black body radiation locus BRL indicate the uniform color temperature locus having each color temperature. Along the color matching temperature trajectory, there are a plurality of color matching temperature points corresponding to the deviation from the black body radiation temperature.

  In FIG. 8, the area indicated by the bold solid line indicates the settable range when the AV mode is the dynamic mode, and the area indicated by the bold broken line indicates the settable range when the AV mode is the user mode. A region indicated by a bold dotted line indicates a settable range when the AV mode is the movie mode.

The black body radiation direction in the CIExy chromaticity diagram shown in FIG. 8 corresponds to the horizontal axis in the adjustment value setting window 50 shown in FIG. Further, the uniform color temperature direction in the CIExy chromaticity diagram shown in FIG. 8 corresponds to the vertical axis in the adjustment value setting window 50 shown in FIG. That is, in the adjustment value setting window 50, the coordinates of the black body radiation direction and the equal color temperature direction represented by the curve in the CIExy chromaticity diagram are expressed by two orthogonal coordinate planes. For this reason, the user can independently adjust the displacement of the white balance in the black body radiation direction and the displacement in the color matching temperature direction by performing an adjustment operation via the adjustment value setting window 50. The white balance can be adjusted more intuitively than when the x value and the y value are adjusted independently, or when the respective RGB colors are adjusted independently.

  As shown in FIG. 8, the settable range of the black body radiation direction when the AV mode is the dynamic mode is a range from about 8000K to about 30000K. The settable range of the black body radiation direction when the AV mode is the user mode is from about 7300K to about 20000K, and the settable range of the black body radiation direction when the AV mode is the movie mode is from about 5100K. The range is about 9300K.

  Regardless of which mode the AV mode is, the settable range in the uniform color temperature direction is a range where the deviation from the blackbody radiation locus is from −0.15Δuv to + 0.15Δuv.

  In FIG. 8, each intersection between the black body radiation locus BRL and the fine broken line and each intersection between the fine broken lines are discrete values (color temperature, deviation) that can be set via the adjustment value setting window 50. Show. For example, the user presses the upper button of the remote controller 20 three times in the adjustment value setting window 50 to change the white balance adjustment value from the chromaticity point on the black body radiation locus BRL from the black body radiation locus. It is possible to move to a chromaticity point where the deviation is + 0.15Δuv.

  Further, as described above, since the settable range varies depending on each mode, the adjustment origin in each mode also varies.

  For example, when the AV mode is the dynamic mode, the value of the adjustment origin is (color temperature, deviation) = (about 12000 K, 0.00 Δuv). Further, the value of the adjustment origin when the AV mode is the user mode is, for example, (about 10000 K, 0.00 Δuv), and the value of the adjustment origin when the AV mode is the movie mode, for example, is (about 6500 K, 0.00). 00Δuv).

  As described above, the OSD generation unit 108 generates an adjustment value setting window in which the point on the CIExy chromaticity diagram corresponding to the initial value of white balance in the selected display mode is used as the adjustment value adjustment origin.

  As described above, since the adjustment origin is different for each AV mode, the user can set an optimum white balance in each AV mode.

  Further, as is apparent from FIG. 8, the user can move the white balance adjustment value from the adjustment origin to the limit of the settable range by pressing the button approximately five times or less, which is highly convenient. Adjust the white balance.

  With the above-described configuration, the television 10 according to the present invention can prevent the white balance of the displayed video from being lost by setting the adjustment value to an extreme value. Also, by having a plurality of AV modes with different adjustment origins, it is possible to provide a white balance that suits the user's preference as compared with the case where only a single display mode is provided.

(OSD movement mode)
Next, the OSD movement mode will be described with reference to FIG. FIG. 9 is a screen transition diagram illustrating the movement of the adjustment value setting window 50 in the OSD movement mode of the television 10 according to the present embodiment.

As described above, when a remote control signal indicating that the Y button 207 is pressed is received,
The television 10 transitions to the OSD movement mode in which the position of the adjustment value setting window 50 displayed on the LCD 110 is moved.

  When transitioning to the OSD movement mode, the adjustment value setting window 50 is displayed on the LCD 110 so as to be superimposed on the still image, for example, as shown in FIG. In the OSD movement mode, when the cross key 201 provided on the remote controller 20 is pressed, the display position of the adjustment value setting window 50 is moved.

  For example, when the upper button of the cross key 201 is pressed while the adjustment value setting window 50 is displayed superimposed on the lower left of the still image as shown in FIG. As described above, the adjustment value setting window 50 is displayed in a state of being superimposed on the upper left of the still image.

  As shown in FIG. 9B, when the right button of the cross key 201 is pressed while the adjustment value setting window 50 is displayed superimposed on the upper left of the still image, as shown in FIG. In addition, the adjustment value setting window 50 is displayed in a state of being superimposed on the upper right of the still image.

  Further, as shown in FIG. 9C, when the down button of the cross key 201 is pressed while the adjustment value setting window 50 is displayed superimposed on the upper right of the still image, as shown in FIG. In addition, the adjustment value setting window 50 is displayed in a state of being superimposed on the lower right of the still image.

  As shown in FIG. 9D, when the left button of the cross key 201 is pressed while the adjustment value setting window 50 is displayed superimposed on the upper right of the still image, as shown in FIG. In addition, the adjustment value setting window 50 is displayed in a state of being superimposed on the lower left of the still image.

  As described above, in the OSD movement mode, the display position of the adjustment value setting window 50 can be moved. Therefore, a part of the still image that the user wants to refer to when adjusting the white balance is hidden by the adjustment value setting window 50. There is no end. Therefore, the convenience of the user when adjusting the white balance is improved.

  Note that the transition of the display position of the adjustment value setting window 50 is not limited to the order shown in FIG.

  In the present embodiment, the configuration in which the white balance adjustment value can be set for each AV mode has been described as an example, but the present invention is not limited to this. For example, a configuration in which an adjustment value is set for each type of content indicated by the video signal may be employed.

  In the present embodiment, the case where the displayed video to be referred to when adjusting the white balance is a still image has been described as an example, but the present invention is not limited to this. For example, the displayed video that is referred to when adjusting the white balance may be a moving image. In this case, the video processing circuit 107 may not generate a still image when the freeze key 204 of the remote controller 20 is pressed.

<Modification 1>
Next, a modification of this embodiment will be described with reference to FIG. As shown in FIG. 10, the television 10 according to the present modification has the same configuration as the television 10 in the present embodiment, except that the flow of the adjustment value setting window 50 display process is different. FIG. 10 is a flowchart showing a flow of display processing of the adjustment value setting window 50 according to the embodiment of the present invention.

  Since the configuration is the same as that of the television 10 according to the present embodiment except that the display processing flow of the adjustment value setting window 50 is different, the description thereof is omitted here.

  As shown in FIG. 10, a remote control signal (user instruction to display a still image) indicating that the freeze key 204 provided on the remote controller 20 is pressed by the user while the image is displayed is acquired. Then, the television 10 displays a still image on the LCD 110 (step S201).

  Specifically, upon acquiring a remote control signal indicating that the freeze key 204 has been pressed, the CPU 118 notifies the video processing circuit 107 that a still image of the displayed video is to be generated. The video processing circuit 107 generates a still image according to the notification from the CPU 118 and supplies it to the LCD controller 109. The LCD controller 109 drives the LCD 110 to display the still image supplied from the video processing circuit 107. As a result, a still image is displayed as shown in FIG.

  Also, the television 10 determines whether or not the user has pressed the R button 205 of the remote controller 20 in a state where a still image is displayed (step S202). Note that whether or not the R button has been pressed may be determined based on, for example, whether or not a remote control signal (user instruction to adjust white balance) indicating that the R button has been pressed is acquired. .

  When the R button 205 is not pressed (NO in step S202), the television 10 repeats the determination in S102. In other words, the television 10 repeats the determination in step S202 until the R button 205 is pressed.

  When the R button 205 is pressed (YES in step S202), the television 10 displays the adjustment value setting window 50 superimposed on the still image (step S203).

  Specifically, upon obtaining a remote control signal indicating that the freeze key 204 has been pressed, the CPU 118 notifies the OSD generation unit 108 that the adjustment value setting window 50 is to be generated. The OSD generation unit 108 generates the adjustment value setting window 50 according to the notification from the CPU 118 and supplies it to the LCD controller 109. The LCD controller 109 drives the LCD 110 so that the adjustment value setting window 50 supplied from the OSD generation unit 108 is displayed superimposed on the still image supplied from the video processing circuit 107. As a result, as shown in FIG. 6A, the adjustment value setting window 50 is displayed superimposed on the still image.

  As described above, also according to the present modification, the user can display the adjustment window with a simple two operations without performing a complicated operation.

  In this modification, after the adjustment value setting window 50 is displayed in step S203, processing similar to the display processing (specifically, steps S102 to S105) of the adjustment value setting window 50 shown in FIG. 7 is performed. It is good also as a structure. Accordingly, the television 10 can switch between display and non-display of the adjustment value setting window 50 by pressing the R button 205 while displaying a still image.

<Modification 2>
Next, another modification of the present embodiment will be described with reference to FIGS. The television 10 according to the present modification displays an achromatic white image (white image) on the LCD 110 together with the adjustment value setting window 50 in the adjustment value setting mode.

First, a case where a white frame (white image) 55 is displayed around the adjustment value setting window 50 in the adjustment value setting mode will be described with reference to FIG. FIG. 11 is a diagram showing an example of a display screen on which an adjustment value setting window 50 having a white frame 55 is displayed superimposed on a still image in the adjustment value setting mode.

  When the user presses the freeze key 204 included in the remote controller 20, the television 10 shifts to an adjustment value setting mode, and a white frame 55 around the adjustment value setting window 50 is displayed together with a still image as shown in FIG. Display the screen displaying.

  Specifically, when the adjustment value setting mode execution instruction is acquired from the remote controller 20, the CPU 118 notifies the video processing circuit (white image generation unit) 107 that a still image of the displayed video is generated. The video processing circuit 107 generates a still image according to the notification from the CPU 118.

  Further, the video processing circuit 107 generates a white image in accordance with the notification from the CPU 118. The video processing circuit 107 superimposes the generated white image on the still image, and performs image quality adjustment processing and white balance adjustment processing.

  When the adjustment value setting mode execution instruction is acquired, the CPU 118 notifies the OSD generation unit 108 that an adjustment value setting window is to be generated. The OSD generation unit 108 generates the adjustment value setting window 50 in accordance with the notification from the CPU 118 and supplies it to the video processing circuit 107. At this time, the white image generated by the video processing circuit 107 is preferably larger than the adjustment value setting window 50.

  The video processing circuit 107 supplies the still image on which the white image is superimposed and the adjustment value setting window 50 to the LCD controller 109. The LCD controller 109 drives the LCD 110 so that the adjustment value setting window 50 is further superimposed and displayed on the white image superimposed on the still image. As a result, as shown in FIG. 11, an adjustment value setting window 50 having a white frame 55 around it is displayed on the LCD 110 so as to be superimposed on the still image.

  If the white image generated by the video processing circuit 107 is smaller than the adjustment value setting window 50, the LCD controller 109 displays the adjustment value setting window so as to overlap a part of the white image. The LCD 110 may be driven.

  According to the above-described configuration, when the user refers to the white frame 55, it is not necessary to greatly remove the line of sight from the adjustment value setting window 50, so that the white balance can be adjusted more smoothly.

  Further, the television 10 may display the white image 60 at a position different from the adjustment value setting window 50 as shown in FIG. FIG. 12 is a diagram illustrating an example of a display screen on which the adjustment value setting window 50 and the white image 60 are displayed in a superimposed manner at different positions in the still image in the adjustment value setting mode.

  In this case, the LCD controller 109 may drive the LCD 110 so that the adjustment value setting window 50 is superimposed and displayed at a position on the still image different from the white image 60 superimposed on the still image. As a result, as shown in FIG. 11, the adjustment value setting window 50 and the white image 60 are superimposed on different positions on the still image and displayed on the LCD 110.

According to this configuration, the television 10 displays the white image 60 separately from the adjustment value setting window 50. Therefore, since the user can refer to the white image 60 as a part of the still image, the user can adjust the still image being displayed to have a more natural white balance.

  Further, as described above, the white frame 55 or the white image 60 is displayed in a state where the image quality adjustment process and the white balance adjustment process are performed. Accordingly, the user can determine how much white balance adjustment is performed by the adjustment value designated by the adjustment value setting cursor 502 on the adjustment value setting window 50 from the white frame 55 or the white image 60 from the white color. You can easily know by change. As a result, the user can adjust the white balance according to the user's preference.

  In Patent Document 4 listed above, a color gradient image or the like is displayed as a color test pattern together with a display image, and an image area to be color-adjusted and a color to be changed are displayed on the display image amount and color test pattern. A technique for performing color adjustment by designating each of the above is disclosed.

  However, in the technique of Patent Document 4, it is necessary for the user himself to select a color to be adjusted, and the work becomes complicated. In addition, when only a part of the color adjustment is performed, there may be a sense of incongruity in the entire image.

  On the other hand, the television 10 according to the present modification displays a white image serving as a reference for adjusting the white balance as the white frame 55 or the white image 60. According to this configuration, the user can refer to the white image superimposed on the still image when adjusting the white balance. Therefore, the user can adjust the white balance with reference to the white image regardless of the displayed video, and thus can easily adjust the white balance.

<Modification 3>
In the present embodiment, the case where the color of each icon displayed in the adjustment value setting window 50 is constant has been described as an example, but the present invention is not limited to this. For example, the television 10 may adopt a configuration in which the color of each icon displayed in the adjustment value setting window 50 is changed according to the adjustment value on the CIExy chromaticity diagram indicated by the adjustment value setting cursor 502.

  First, the case where each of the four icons displayed in the adjustment value setting area 501 of the adjustment value setting window 50 is a single color icon will be described with reference to FIG. FIG. 13 is a diagram showing an example of the adjustment value setting area 501 displayed in the adjustment value setting window 50 according to this modification. In FIG. 13, the adjustment value setting cursor 502 is not shown.

  FIG. 13A shows an example of four icons displayed in the adjustment value setting area 501 before the adjustment value setting cursor 502 is moved in the adjustment value setting mode, and FIG. 13B shows the adjustment value setting cursor 502. An example of four icons after moving is shown.

  For example, in the state shown in FIG. 13A, when the upper button of the cross key 201 is pressed, the adjustment value setting cursor 502 is displayed in the positive vertical direction (in the same color temperature direction) displayed on the adjustment value setting window 50. , In a direction having a positive deviation from the black body radiation locus, that is, a direction in which green color is increased on the CIExy chromaticity diagram. As a result, when the white balance of the still image is adjusted so that the green color is increased, the color of each icon displayed in the adjustment value setting window 50 is increased in the green color similarly to the adjusted white balance. Adjust to color. Details of the color adjustment of each icon will be described later.

According to the above-described configuration, the television 10 matches the adjustment value on the CIExy chromaticity diagram indicated by the adjustment value setting cursor 502, that is, the adjustment value setting cursor 502 on the adjustment value setting area 501.
The colors of the four icons displayed in the adjustment value setting area 501 are changed in accordance with the position of. Thus, the television 10 determines how the white balance is adjusted when the current adjustment value setting cursor 502 displayed in the adjustment value setting area 501 is moved in each direction. Can be presented to the user.

  Therefore, the user can know the white balance when the adjustment value setting cursor 502 is moved in each direction by referring to the colors of the four icons displayed in the adjustment value setting area 501. Thus, the user can more easily adjust the white balance of the still image to a desired white balance in the adjustment value setting mode.

  Further, the four icons displayed in the adjustment value setting area 501 may be icons including natural flower images (also referred to as natural image icons) as shown in FIG. FIG. 14 is a diagram showing another example of the adjustment value setting area 501 displayed in the adjustment value setting window 50 according to this modification. In FIG. 14, the adjustment value setting cursor 502 is not shown.

  FIG. 14A shows an example of four natural image icons displayed in the adjustment value setting area 501 before moving the adjustment value setting cursor 502 in the adjustment value setting mode, and FIG. 14B shows the adjustment value setting. An example of four natural image icons after the cursor 502 is moved is shown.

  When the still image or video referred to in the adjustment value setting mode includes nature, the user can more easily adjust to the desired white balance by referring to the above-described natural image icon. Note that the natural image included in the natural image icon is not limited to a flower image, and may be, for example, a tree, a bird, a cloud, and a mountain.

  Further, in the adjustment value setting area 501 displayed in the adjustment value setting window 50 according to this modification, as shown in FIG. 15, a horizontal direction indicating the black body radiation direction in the CIExy chromaticity diagram is used instead of the four icons. Even if the color on the CIExy chromaticity diagram corresponding to the horizontal axis and the vertical axis is represented on a plane extending by the axis and the vertical axis perpendicular to the horizontal axis and indicating the direction of the uniform color temperature good.

  In this case, the user may adjust the desired white balance by moving the adjustment value setting cursor 502 so as to select an arbitrary color from the colors displayed in the adjustment value setting area 501.

  Further, the television 10 according to the present modification may display an adjustment value setting cursor (cursor) 503 having the same shape as the four icons as shown in FIG. 16 instead of the adjustment value setting cursor 502. FIG. 16 is a diagram showing still another example of the adjustment value setting area 501 displayed in the adjustment value setting window 50 according to this modification.

  FIG. 16A shows an example of the adjustment value setting area 501 in which the adjustment value setting cursor 503 is displayed in the same shape as the four icons. FIG. 16B shows the adjustment value setting cursor 503a before the movement and the adjustment value setting cursor 503a after the movement. An example of the adjustment value setting area 501 displayed together with the adjustment value setting cursor 503b is shown.

  First, as shown in FIG. 16A, a user operation to press one of the cross keys 201 of the remote controller 20 in a state where the adjustment value setting cursor 503 is displayed in the same shape as the four icons is accepted. It is done.

When the user operation is accepted, as shown in FIG. 16B, the adjustment value setting cursor 503b moved by the user operation is displayed in the adjustment value setting area 501 as a part of the adjustment value setting cursor 503a immediately before the movement. They are displayed so as to overlap. The adjustment value setting cursor 503a is displayed in a color on the CIExy chromaticity diagram corresponding to the position on the adjustment value setting area 501 immediately before the adjustment value setting cursor 503 moves. The adjustment value setting cursor 503b is displayed in a color on the CIExy chromaticity diagram corresponding to the position (adjustment value) on the adjustment value setting area 501 after the adjustment value setting cursor 503 is moved.

  In this case, a configuration may be adopted in which the colors of the four icons displayed in the adjustment value setting window 50 are changed as the adjustment value setting cursor 503 is moved, or a configuration in which the colors are not changed is adopted. May be.

  According to the above configuration, the OSD generation unit 108 according to the present modification example uses the target point on the CIExy chromaticity diagram corresponding to the position of the adjustment value setting cursor 503 moved by the user operation (adjustment value specified by the user). The color of the target point on the CIExy chromaticity diagram corresponding to the position of the adjustment value setting cursor 503 immediately before moving by the user operation (adjustment value immediately before specified by the user) is displayed. An adjustment value setting window 50 displayed on the adjustment value setting cursor 503a to be displayed is generated.

  Therefore, the television 10 according to the present modification has the color on the CIExy chromaticity diagram corresponding to the position of the adjustment value setting cursor 503 before moving by the user operation and the adjustment value setting cursor 503 after moving by the user operation. The color on the CIExy chromaticity diagram corresponding to the position can also be presented to the user.

  As a result, the user can easily confirm the change in the color that is the target point on the CIExy chromaticity diagram of the white balance before and after the movement of the adjustment value setting cursor 503, so that the desired white balance can be more easily achieved. Can be adjusted.

(Change icon color)
Next, the change of the color of each icon displayed in the adjustment value setting area 501 accompanying the movement of the adjustment value setting cursor 502 will be described with reference to FIGS. 17 and 18. FIG. 17 is a state transition diagram showing a change in the color of each icon displayed in the adjustment value setting area 501 of the adjustment value setting window 50 according to this modification. FIG. 18 is a graph showing the color on the CIExy chromaticity diagram of each icon displayed in the adjustment value setting area 501 of the adjustment value setting window 50 according to this modification.

  FIG. 17A is a diagram showing the color of each icon before the adjustment value setting cursor 502 is moved, and FIG. 17B is a diagram showing the color of each icon after the adjustment value setting cursor 502 is moved.

  As shown in FIG. 17A, the color of the horizontal axis positive direction icon in the adjustment value setting area 501 is 1R, the horizontal axis negative direction icon color is 1L, and the vertical axis before the adjustment value setting cursor 502 is moved. The icon in the positive direction is 1U, and the icon in the negative vertical axis is 1D. Further, as shown in FIG. 17B, after the adjustment value setting cursor 502 is moved, the icon color in the horizontal axis positive direction in the adjustment value setting area 501 is 2R, the icon color in the horizontal axis negative direction is 2L, The vertical axis icon is 2U, and the vertical axis negative icon is 2D.

  As shown in FIG. 18, when the position indicated by the adjustment value setting cursor 502 on the adjustment value setting area 501 is the origin 1 on the CIExy chromaticity diagram, the color of each icon is thin with the origin 1 as the center. Each color (1R, 1L, 1U, and 1D) is indicated by a broken line.

At this time, for example, when the user presses the upper button of the cross key 201 included in the remote controller 20, the adjustment value setting cursor 502 moves in the positive direction on the vertical axis on the adjustment value setting area 501. As a result, the position indicated by the adjustment value setting cursor 502 on the CIExy chromaticity diagram moves from the origin 1 to the origin 2 located in a direction having a positive deviation from the black body radiation locus in the equal color temperature direction.

  When the position indicated by the adjustment value setting cursor 502 moves to the origin 2 on the CIExy chromaticity diagram, the colors of the four icons displayed in the adjustment value setting area 501 are the origin 2 after the movement, as shown in FIG. Each color (2R, 2L, 2U, and 2D) indicated by a thick broken line is centered on.

  In the upper brown patent document 5, a user interface (GUI) including a hue ring adjustment tool and a brightness adjustment bar is displayed as a color adjustment unit, and color adjustment is performed by accepting a user operation according to the GUI. An image color correction apparatus is disclosed.

  However, in the technique described in Patent Document 5, the user cannot easily grasp how much color adjustment is performed by moving the hue ring adjustment tool or the brightness adjustment bar, and performs color adjustment. There has been a problem that the operation to perform becomes complicated. This is because a user who uses the image color correction apparatus is not familiar with color adjustment and generally cannot easily understand words such as hue circle and brightness.

  On the other hand, according to the above configuration, the television 10 according to the present modification is displayed in the adjustment value setting area 501 of the adjustment value setting window 50 according to the current adjustment value (position indicated by the adjustment value setting cursor 502). Each of the four icon colors can be adjusted. When an adjustment value is newly designated by the user, the adjustment value is displayed in the adjustment value setting area 501 according to the newly designated adjustment value (position indicated by the adjustment value setting cursor 502 after movement) 4. You can change the color of each icon.

  Therefore, the user refers to the four icons displayed in the adjustment value setting area 501 to check how the white balance changes when the adjustment value is moved in the direction of the light icon. However, the white balance can be adjusted. Accordingly, since the user can intuitively adjust the white balance, the operation for adjusting the white balance can be prevented from becoming complicated.

[Program, storage medium]
Each block of the television 10 may be realized in hardware by a logic circuit formed on an integrated circuit (IC chip), or may be realized in software using a CPU (Central Processing Unit).

  In the latter case, the television 10 includes a CPU that executes instructions of a program that realizes each function, a ROM (Read Only Memory) that stores the program, a RAM (Random Access Memory) that expands the program, the program, and various data. A storage device (recording medium) such as a memory for storing the. An object of the present invention is to provide a recording medium on which a program code (execution format program, intermediate code program, source program) of a control program of the television 10 which is software for realizing the above-described functions is recorded so as to be read by a computer This can also be achieved by reading the program code recorded in the recording medium and executing it by the computer (or CPU or MPU).

Examples of the recording medium include tapes such as magnetic tape and cassette tape, magnetic disks such as floppy (registered trademark) disks / hard disks, and CD-ROM / MO / MD.
/ Disks including optical disks such as DVD / CD-R, IC cards (including memory cards) / cards such as optical cards, semiconductor memories such as mask ROM / EPROM / EEPROM / flash ROM, or PLD (Programmable logic) logic circuits such as a device) or an FPGA (Field Programmable Gate Array) can be used.

The program code may be supplied to the television 10 via a communication network. The communication network is not particularly limited as long as it can transmit the program code. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, etc. can be used. The transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type. For example, even with wired lines such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), IEEE 8021 wireless, HDR (High Data Rate, NFC (Near Field Communication), DLNA (Digital Living Network Alliance), mobile phone network, satellite line, terrestrial digital network, etc. can also be used.

  It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be suitably applied to a television receiver, a personal computer, a car navigation system, a mobile phone, a smartphone, a tablet PC, and the like.

10 TV 20 Remote control 30 USB-HD drive 50 Adjustment value setting window 55 White frame (white image)
60 White image 101 External input terminal 102 Digital terrestrial broadcast tuner 103 Satellite broadcast tuner 104 Recording / playback unit 105 BD drive 106 Video selector 107 Video processing circuit (adjustment means, white image generation means)
108 OSD generator (adjustment window generator)
109 LCD controller (display means)
110 LCD
111 Audio selector 112 Audio processing circuit 113 Amplifier 114 Speaker 115 USB interface 116 ROM
117 RAM
118 CPU
119 Infrared light receiver 120 Camera 121 HD drive 201 Four-way key 202 Enter key 203 Return key 204 Freeze key 205 R button 206 G button 207 Y button 208 B button 501 Adjustment value setting area 502, 503 Adjustment value setting cursor

Claims (12)

In a display device that operates in a plurality of display modes,
An adjustment window generating means for generating an adjustment window for adjusting the white balance of the image being displayed;
Display means for displaying the adjustment window generated by the adjustment window generation means;
Adjusting means for adjusting white balance with the adjustment value designated by the user on the adjustment window as a target point;
The adjustment window is a plane whose origin is the white balance adjustment value, and the initial value of the white balance in the selected display mode, the first axis indicating the first adjustment direction, and the first adjustment. all SANYO shown on a plane spanned by a second axis representing a different adjustment direction to the direction,
The first axis indicates the black body radiation direction in the xy chromaticity diagram,
The second axis is an axis orthogonal to the first axis and indicates a color matching temperature direction in the xy chromaticity diagram,
The adjustment means performs white balance adjustment targeting a target point on the xy chromaticity diagram corresponding to an adjustment value designated by the user on the plane.
At least part of the area where the target point can be set in a certain display mode overlaps with the area where the target point can be set in another display mode,
A display device characterized by that. A first light color icon corresponding to the low temperature chromaticity along the black body radiation locus in the xy chromaticity diagram is displayed at the positive end of the first axis. At the end in the negative direction, a second light color icon corresponding to the high temperature chromaticity along the black body radiation locus is displayed.
At the end of the second axis in the positive direction, a third light color icon corresponding to chromaticity having a positive deviation from the black body radiation locus is displayed, and the end of the second axis in the negative direction is displayed. In the part, a fourth light color icon corresponding to chromaticity having a negative deviation from the black body radiation locus is displayed.
The display device according to claim 1 . A white image generating means for generating a white image;
The display means displays the white image generated by the white image generation means, superimposed on the image being displayed together with the adjustment window,
The display device according to claim 1 or 2, characterized in that. The display means displays the white image around the adjustment window;
The display device according to claim 3 . The display means displays the white image at a position different from the position where the adjustment window is displayed.
The display device according to claim 3 . The adjustment window generating means sets the chromaticity corresponding to each of the first light color icon, the second light color icon, the third light color icon, and the fourth light color icon to an adjustment value designated by the user. Change accordingly,
The display device according to claim 2 . The adjustment window generating means superimposes a cursor indicating the color of the target point corresponding to the adjustment value specified by the user on a cursor indicating the color of the target point corresponding to the adjustment value immediately before specified by the user. Generate an adjustment window to display,
The display device according to claim 2 . A display device according to claim 2 ;
A remote control for receiving instructions from the user,
In a display system comprising:
Each of the light color icons has a color different from the color assigned to the operation button of the remote control.
A display system characterized by that. A method of adjusting white balance in a display device that operates in a plurality of display modes,
An adjustment window generating step for generating an adjustment window for adjusting the white balance of the display image;
A display step for displaying the adjustment window generated in the adjustment window generation step;
An adjustment step of adjusting white balance with the adjustment value specified by the user on the adjustment window as a target point,
The adjustment window is a plane whose origin is the white balance adjustment value, and the initial value of the white balance in the selected display mode, the first axis indicating the first adjustment direction, and the first adjustment. all SANYO shown on a plane spanned by a second axis representing a different adjustment direction to the direction,
The first axis indicates the black body radiation direction in the xy chromaticity diagram,
The second axis is an axis orthogonal to the first axis and indicates a color matching temperature direction in the xy chromaticity diagram,
The adjustment step performs white balance adjustment targeting a target point on the xy chromaticity diagram corresponding to an adjustment value designated by the user on the plane.
At least part of the area where the target point can be set in a certain display mode overlaps with the area where the target point can be set in another display mode,
An adjustment method characterized by that. And a display device according to any one of claims 1 to 7,
A television receiver characterized by that. A program for operating a computer included in the display device according to any one of claims 1 to 7 , wherein the program causes the computer to function as each of the means. Computer readable recording medium recording the program according to claim 1 1.