KR20080065336A - (an) image display device for having hdmi-cec function and method for playing of the same - Google Patents

Abstract

An image display device for having an HDMI-CEC(High Definition Multimedia Interface-Consumer Electronics Control) function and a method for controlling the same are provided to display a process of setting the HDMI-CEC function On automatically and set the HDMI-CEC function On so as to check the process of the HDMI-CEC function easily and to increase satisfaction of a user. It is judged whether a command for carrying out an HDMI-CEC(High Definition Multimedia Interface-Consumer Electronics Control) is inputted through a key input part(S110). It is judged whether the present HDMI-CEC function is set On(S120). When the present HDMI-CEC function is On, a hot menu is displayed(S130). A message of displaying an Off state of the HDMI-CEC function and a message of asking for an On of the HDMI-CEC function are displayed(S140). It is judged whether the command of setting the HDMI-CEC function On is inputted(S150). A process of setting the HDMI-CEC function On is displayed and the HDMI-CEC function is set On(S160). When the command of setting the HDMI-CEC function On is not inputted, an OSD(On Screen Display) is released(S170).

Description

Image display device for having HDMI-CEC function and method for playing of the same}

1 is a schematic diagram showing an external device connected to a general video display device.

2 is a flowchart illustrating a step-by-step method of controlling a video display device having an HDMI-CEC function according to the prior art;

Figure 3 is a block diagram showing the configuration of a video display device having an HDMI-CEC function according to the present invention.

4A to 4D are diagrams showing a process up to setting the HDMI-CEC function to on.

5 is a flowchart for explaining step by step a control method of an image display device having an HDMI-CEC function according to the present invention;

***** Explanation of symbols for main parts of drawing *****

100: video display device

110: tuner 120: demodulator

130: demultiplexer 140: signal input and output unit

150: image signal processor 160: display unit

170: key input unit 180: control unit

190: OSD processing unit

200: external device

210: external device 1 220: external device 2

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video display device, and more particularly, in a state in which a high definition multimedia interface-consumer electronics control (HDMI-CEC) function is called 'HDMI-CEC'. The present invention relates to an image display device having an HDMI-CEC function and to a control method thereof, which is configured to automatically turn on the HDMI-CEC function according to a user's selection when an HDMI-CEC command is input.

Generally, a TV is included in a video display device, and such TV is tuned to a demodulated broadcast signal according to a channel selected by a user among broadcast signals transmitted from a broadcasting station, and separated into a voice and a video, and then processed through a corresponding voice and image processing. And a video device output through a speaker.

Such an image display device has added additional functions as a way to enhance the convenience of the viewer. As one of such additional functions, the video display device is equipped with an HDMI-CEC function for operation and control of a connected external device.

In general, HDMI (High Definition Multimedia Interface) combines the existing RGB, Y, Cb / Cr channels and audio channels into one channel, and has a high-definition video signal and a multi-channel audio signal having a bandwidth of 5Gbps or more. It is a technology that combines into a single digital interface.

The HDMI consists of three independent communication channels, such as Transition Minimized Differential Signaling (TMDS), Display Data Channel (DDC), and Consumer Electronics Control (CEC), thereby providing A / V data, device information, and control commands. Can send and receive

The CEC is an additional protocol for performing high-level control functions in the HDMI and can be used in a small transmission speed and a small memory environment.

Hereinafter, a control method of an image display device having an HDMI-CEC function according to the prior art will be described with reference to the accompanying drawings.

First, as illustrated in FIG. 1, an external device 10 and an image display device 30 such as a DVD and a home theater are connected through a connector 20 and a cable 21. The external device 10 transmits the corresponding data to the image display device 30 through the connector 20 and the cable 21. Accordingly, the image display device 30 outputs the received data on the screen. In this case, the external device 10 and the video display device 30 are connected to the HDMI cable 13 pin (CEC pin), and communicate with each other through the CEC pin.

In addition, as the HDMI is developed and used, the external device 10 can directly transmit the corresponding data to the image display device 30, thereby enabling digital video output of high resolution.

In the method for controlling an image display device having an HDMI-CEC function according to the prior art, as shown in FIG. 2, first, it is determined whether an HDMI-CEC command is input from a user (S10).

Subsequently, when the determination result (S10) HDMI-CEC command is input, it is determined whether the current HDMI-CEC function is set to on (S20).

Subsequently, if the current HDMI-CEC function is set to Off (S20), the corresponding message indicating that the HDMI-CEC is currently off is displayed (S30).

Subsequently, it is determined whether the HDMI-CEC function is set to On (S40).

And if the determination result (S40) if you want to set the HDMI-CEC function to On (On) to enter the corresponding menu to set the HDMI-CEC function On (On) and turn on the HDMI-CEC function in the HDMI-CEC item Set to (On) (S50).

If the current HDMI-CEC function is set to On (S20), the corresponding menu according to the HDMI-CEC function is displayed (S60).

However, the control method of the video display device having the HDMI-CEC function according to the prior art corresponds to the fact that the HDMI-CEC function is turned off when the user inputs the HDMI-CEC command even though the HDMI-CEC function is turned off. Since only the message is displayed, the user has to find a menu item with the HDMI-CEC on / off function and turn on the HDMI-CEC function.

If the user is not good at complicated menu setting and does not know how to set the corresponding HDMI-CEC function, it takes a long time to set the corresponding HDMI-CEC function, and there is a big problem of psychological discomfort.

The present invention has been made to solve the above problems, and when the HDMI-CEC command is input from the user in the state that the HDMI-CEC function is off (off), it informs that the current HDMI-CEC function is off (off), If the user wants, the user can set the HDMI-CEC function to on by automatically guiding the corresponding HDMI-CEC function setting process without any additional operation.

In addition, another object of the present invention is to enable the HDMI-CEC function to be used more efficiently.

According to an aspect of the present invention, there is provided a video display device having an HDMI-CEC function, comprising: a key input unit for receiving a request command from a user, and the key input unit; When the HDMI-CEC command is input through the control, the corresponding message according to the setting state of the current HDMI-CEC function is displayed, and the setting state of the HDMI-CEC function is changed based on the command input through the key input unit on the message. A control unit that outputs a control signal so that the control unit, an OSD processing unit for generating and processing a change process of the HDMI-CEC function according to the control signal of the control unit, an OSD, an image signal input from the outside, and an OSD processed through the OSD processing unit It is configured to include a display unit for displaying the characteristics thereof.

Preferably, when the HDMI-CEC function is in an off state, the controller determines whether the HDMI-CEC function is turned off and a message indicating that the HDMI-CEC function is turned off through the display unit. It is characterized in that it is controlled to display a message to be asked through the display unit, and the HDMI-CEC function is set to on according to a command input through the key input unit.

More preferably, when the command inputs the HDMI-CEC function to be turned on through the key input unit in the message, all the corresponding keycodes until the HDMI-CEC function is turned on are sequentially input. It is characterized by controlling to set the HDMI-CEC function to on by judging.

More preferably, the OSD processing unit generates a process of setting the HDMI-CEC function to on according to a control signal of the controller to the OSD.

 A control method of a video display device having an HDMI-CEC function includes the steps of: determining whether an HDMI-CEC command is input from an external device, in a control method of a video display device having an HDMI-CEC function; If a command is input, displaying a corresponding message according to a current HDMI-CEC setting state, determining whether a setting change command of the HDMI-CEC function is input on the displayed message, and the setting change command When the input, the setting state of the HDMI-CEC function is controlled to be changed automatically, characterized in that it comprises.

Preferably, in the displaying of the corresponding message according to the current HDMI-CEC setting state, if it is determined that the current HDMI-CEC function is set to off, the message and whether the HDMI-CEC function is on or not are set. It is a step of displaying a message, which is characterized.

More preferably, the controlling of the setting state of the HDMI-CEC function is automatically changed, when the command according to the ON setting of the HDMI-CEC function is input on the displayed message, setting the HDMI-CEC function to on. It is determined that all the corresponding key codes are sequentially input, and automatically turn on the HDMI-CEC function.

More preferably, the method further comprises displaying the process of automatically setting the HDMI-CEC function to on by using the OSD.

Hereinafter, an image display device having a HDMI-CEC function and a control method according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram showing the configuration of a video display device having an HDMI-CEC function according to the present invention, Figures 4a to 4d is a view showing a process up to setting the HDMI-CEC function on (on), 5 is a flowchart for explaining step by step a control method of an image display device having an HDMI-CEC function according to the present invention.

First, the image display device having the HDMI-CEC function according to the present invention is composed of an image display device 100 and an external device 200. The image display device 100 is a user of a broadcast signal received from the outside. A tuner 110 for tuning a broadcast signal of a desired channel, a demodulator 120 for demodulating the tuned broadcast signal, and a demultiplexer 130 for separating the demodulated broadcast signal into video, audio, and additional information. And a signal input / output unit 140 for inputting / outputting signals to / from the external device 200 and an image separated through the demultiplexer 130 or a signal input through the signal input / output unit 140. An image signal processor 150 for signal processing to be enabled; a display unit 160 for displaying an image signal processed by the image signal processor 150; a key input unit 170 for receiving a request command from a user; , The key When the HDMI-CEC command is input through the unit 170, the corresponding message according to the setting state of the current HDMI-CEC function is displayed, and the HDMI based on the command input through the key input unit 170 on the message. A control unit 180 for outputting a control signal to change the setting state of the CEC function, and an OSD processing unit for generating, processing, and outputting a process of changing the HDMI-CEC function according to the control signal of the control unit 180; 190).

In addition, the external device 200 includes an external device 1 210 and an external device 2 200. The external device 200 may play a media such as a DVD player, a dive player, and display the image on the image display device 100. Any device is applicable

In addition, when the external devices 210 and 220 are controlled by the signal input / output unit 140 and the external devices 210 and 220 support the HDMI-CEC (High Definition Multimedia Interface-Consumer Electronic Control) function. Can be controlled using HDMI-CEC.

Here, HDMI is a new digital interface based on DVI, and is used in A / V devices such as DVD players, HDTVs, set-top boxes, etc. as a format integrating video and audio signals into one digital interface. HDMI supports standard, extended or HD video as well as standard-multi-channel audio signals, and has the advantage of transmitting uncompressed digital video signals of up to 6 gigabits per second to a video display device with a single terminal.

The operation of the video display device having the HDMI-CEC function according to the present invention configured as described above is as follows.

First, when a power on command is input through the key input unit 170, the controller 180 controls the channel selected by the user to be tuned through the tuner 110.

Then, the tuner 110 tunes the broadcast signal of the channel selected by the user, and the broadcast signal of the channel tuned through the tuner 110 is demodulated through the demodulator 120 to correct an error and to transport a transport stream. The transport stream is converted into a transport stream, and the temporally multiplexed transport stream converted by the demodulator 14 is demultiplexed through the demultiplexer 130 to be separated into a video, audio, and additional information signal. The separated video signal is processed to be displayed through the video signal processor 150 and then displayed on the display unit 160.

In addition, when the HDMI-CEC command is input through the key input unit 170, the controller 180 determines the current setting state of the HDMI-CEC function. That is, it is determined whether the HDMI-CEC function is currently set to ON or Off.

If the HDMI-CEC function is currently set to On, a hot menu according to the HDMI-CEC function is displayed as shown in FIG. 4D.

In addition, if the current HDMI-CEC function is set to off, a message indicating that the HDMI-CEC function is currently set to off and a message asking whether to set the HDMI-CEC function to on are displayed. That is, for example, display the message "Please set the HDMI-CEC function to ON in the menu. If you want to set it to ON immediately, please press the 'OK' button."

When the corresponding command for setting the HDMI-CEC function to ON is input through the key input unit 170, the controller 180 outputs a control signal to set the HDMI-CEC function to ON. do. That is, the controller 180 considers that all key codes until the HDMI-CEC function is turned on are sequentially input, and sets the HDMI-CEC function to on.

In other words, the HDMI-CEC function is turned on according to a command input according to a virtual key operation, and the process until the HDMI-CEC function is turned on is displayed on the OSD.

That is, as shown in FIGS. 4A to 4C, in order to set the HDMI-CEC function to ON, first, a menu key for entering a menu item and a down key four times and a right key for entering an option item on the menu are shown. One time, two down keys and one right key for entering the HDMI-CEC menu on the option item, and a confirmation key for setting the HDMI-CEC function to on should be input. Accordingly, the controller 180 sets the HDMI-CEC function to ON by considering that all the keys to be input in order to set the HDMI-CEC function to ON are inputted, and the OSD processing unit 190 An OSD is generated until the HDMI-CEC function is set to on.

Therefore, when the user inputs a key for setting the HDMI-CEC function to ON while the HDMI-CEC function is turned off, the user can view the operation until the HDMI-CEC function is automatically turned on. At the same time, the HDMI-CEC function can be set to on. This allows the user to know how to set the HDMI-CEC function at the same time as the current HDMI-CEC function is turned on.

In the control method of the image display device having the HDMI-CEC function according to the present invention configured as described above, first, it is determined whether a command for performing the HDMI-CEC function is input through the key input unit 170 (S110). ). That is, it is determined whether the HDMI-CEC key of the key input unit 170 is input.

Subsequently, when a command for performing the HDMI-CEC function is input, the determination result (S110) determines whether the current HDMI-CEC function is set to On (S120).

If the current HDMI-CEC function is set to On (S120), the hot menu corresponding to the HDMI-CEC function is displayed (S130). That is, as shown in FIG. 4D, an OSD for using the HDMI-CEC function is displayed.

In addition, if the current HDMI-CEC function is set to Off (S120), the corresponding message indicating that the HDMI-CEC function is currently off and a message asking whether to set the HDMI-CEC function to on. Display (S140).

In operation S150, it is determined whether a command for setting the HDMI-CEC function to ON is input through the key input unit 170 on the displayed message.

Subsequently, when a command for setting the HDMI-CEC function to ON is input, the determination result (S150) displays the process until the HDMI-CEC function is set to ON, and sets the HDMI-CEC function to ON ( S160). That is, as shown in FIGS. 4A to 4C, a menu screen for setting the HDMI-CEC function to on is entered, and an option item for setting the HDMI-CEC function is entered on the menu screen. Displays the process of entering the HDMI-CEC function on the option item and changing the setting state to On. As described above, the controller 180 determines that all key codes until the HDMI-CEC function is turned on are input, and sets the corresponding HDMI-CEC function to on.

In addition, if the command for setting the HDMI-CEC function to ON is not input (S150), the corresponding OSD is released (S170).

As described above, the video display device having the HDMI-CEC function and the control method thereof according to the present invention display a corresponding message when an HDMI-CEC command is input from the user when the function of the HDMI-CEC is turned off. If a command to turn on the HDMI-CEC function is input from the user on the message, the HDMI-CEC function is turned on while displaying the process of setting the HDMI-CEC function to on. . As a result, the user can easily turn on the current HDMI-CEC function and check the corresponding HDMI-CEC function process, thereby improving user satisfaction.

Claims (8)

In the video display device having an HDMI-CEC function, A key input unit for receiving a request command from a user; When the HDMI-CEC command is input through the key input unit, the corresponding message according to the setting state of the current HDMI-CEC function is displayed, and the HDMI-CEC function is controlled based on the command input through the key input unit. A control unit which outputs a control signal to change the setting state; An OSD processing unit for generating and processing a change process of the HDMI-CEC function with an OSD according to a control signal of the controller; And, And a display unit for displaying an image signal input from an external device and an OSD processed through the OSD processing unit. The method of claim 1, If the HDMI-CEC function is currently in an off state, the controller is notified that the HDMI-CEC function is turned off through the display and a message asking whether to turn on the HDMI-CEC function. Is controlled to be displayed on the display unit, and the HDMI-CEC function is set to on according to a command input through the key input unit. The method of claim 2, The controller determines that the corresponding key code until the HDMI-CEC function is set to ON is sequentially input when the command to set the HDMI-CEC function to ON is input through the key input unit in the message. An image display device having an HDMI-CEC function, characterized in that the HDMI-CEC function is set to on. The method of claim 3, wherein And the OSD processing unit generates, by the OSD, a process of setting the HDMI-CEC function to on according to a control signal of the controller. In the control method of a video display device having an HDMI-CEC function, Determining whether an HDMI-CEC command has been input from the outside; Displaying the corresponding message according to the current HDMI-CEC setting state when the HDMI-CEC command is input; Determining whether a setting change command of the HDMI-CEC function has been input on the displayed message; And, And controlling the setting state of the HDMI-CEC function to be automatically changed when the setting change command is input. The method of claim 5, wherein Displaying the corresponding message according to the current HDMI-CEC setting state If it is determined that the current HDMI-CEC function is set to off, displaying the corresponding message and a message asking whether the HDMI-CEC function is on or not. How to control the instrument. The method of claim 6, The controlling of the setting state of the HDMI-CEC function is automatically changed. When the command according to the ON setting of the HDMI-CEC function is input on the displayed message, it is determined that all the corresponding key codes for setting the HDMI-CEC function to ON are sequentially input, and the HDMI-CEC function is automatically activated. Control method of a video display device having an HDMI-CEC function, characterized in that the setting step to ON.  The method of claim 7, wherein And displaying the OSD until the HDMI-CEC function is turned on by using an OSD.

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