JP2008107675A - Video display system and video display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video display system and a video display device capable of widening the range of options in terms of the types of video formats of the video to be output from a video output device to the video display device without increasing the information amount of setting information sent from the video display device to the video output device. <P>SOLUTION: In the video display system A including a monitor device X and a personal computer Y, the monitor device X is provided with an ROM 17 that is disposed independent from an EEPROM 16 for storing the setting information of the monitor device X including the prescribed number of the types of the video formats that can be displayed by the display part 15 of the monitor device X, for storing the types of video formats more than the prescribed number. The types of video formats to be stored in the EEPROM 16 can be selected out of many types of video formats stored in the ROM 17. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a video display system including a video display device that displays input video and a video output device that outputs video to the video display device, and in particular, the video output device acquires from the video display device. The present invention relates to a video display system that outputs video to the video display device based on setting information (for example, EDID of VESA standard).

  Video format types such as the number of scanning lines, scanning method, and resolution that can be displayed on video display devices such as liquid crystal televisions and monitor devices that display video input from video output devices such as personal computers (computers) that output video , Depending on the display capability of the video display device. Therefore, for example, even when a video is input to the video display device in a video format type that can be output by the video output device, the video may not be displayed normally on the video display device. In particular, in recent years when video format types that can be output by the video output device are diversifying, such a situation is likely to occur.

On the other hand, in Patent Document 1, a personal computer reads setting information including a video format type that can be displayed on the monitor unit from a ROM provided in the monitor unit, and outputs video to the monitor unit based on the setting information. A video display system configured as described above is disclosed. In the video display system configured as described above, the video output from the personal computer is normally displayed on the monitor unit. Note that a video display device such as the monitor unit generally supports a plurality of video format types, and the setting information stored in the ROM includes a plurality of video format types.
JP 2002-318571 A

However, in the video display system disclosed in Patent Document 1, as the number of video format types included in the setting information increases, the communication between the personal computer and the monitor unit when the personal computer reads the setting information. There is a problem that the load increases, for example, the processing speed decreases.
Further, it is possible to reduce the communication load between the personal computer and the monitor unit by reducing the number of video format types included in the setting information. However, in this case, the choice of the video format type of the video output from the personal computer to the monitor unit is limited, and there is a problem that the display capability of the monitor unit cannot be used effectively. This problem also occurs when the setting information cannot include a large number of video format types, such as when the setting information is EDID whose data size is defined by the VESA standard.
Accordingly, the present invention has been made in view of the above circumstances, and the object of the present invention is from the video output device to the video output device without increasing the amount of setting information acquired from the video display device. An object of the present invention is to provide a video display system and a video display device capable of increasing the choices of video format types of video output to the video display device.

In order to achieve the above object, the present invention provides video display means for displaying input video and setting information for storing setting information of the video display device including a predetermined number of video format types that can be displayed by the video display means. Video display device having storage means, setting information acquisition means for acquiring setting information stored in setting information storage means, and video output to video display device based on the setting information acquired by the setting information acquisition means And a video output device having a video format type setting means for setting the video format type, wherein the video display device is provided separately from the setting information storage means. The video format type storage means for storing the video format types more than the predetermined number, and the video format type stored in the video format type storage means. Configured as an image display system characterized in that it comprises a video format type selection means for selecting the video format type to be stored in the setting information storage means. Here, the video format type includes, for example, the number of scanning lines that can be displayed by the video display means, the scanning method, and the resolution.
According to the present invention, the options of the video format type of the video output from the video output device to the video display device are increased without increasing the information amount of the setting information stored in the setting information storage means. Therefore, the display capability of the video display device can be used effectively.
In particular, if the setting information is VESA standard EDID, the data size of the setting information is defined. Therefore, the number of video format types that can be included in the setting information is limited by the data size. The Therefore, even when the video display device originally has a display capability corresponding to more video format types than the limited number, the display capability of the video display device cannot be used effectively. The problem arises. However, according to the present invention, a large number of the video format types are stored in the video format type storage means provided separately from the setting information storage means, thereby effectively using the display capability of the video display device. It becomes possible to do.

Incidentally, since the video format type stored in the setting information storage means needs to be rewritable, for example, a rewritable EPROM or EEPROM is used as the setting information storage means.
On the other hand, since it is necessary to store a large number of the video format types in the video format type storage means, it is necessary to use a large-capacity storage means for the video format type storage means. Since it is not necessary to rewrite the video format type stored in the storage means, it is possible to use an inexpensive one such as a non-rewritable ROM or PROM.

  Further, one or a plurality of combinations of the video format types stored in the setting information storage unit are set, and the video format types stored in the setting information storage unit are selected by selecting the set combinations. The structure which performs is considered. Thereby, for example, a combination of the video format types set in the past can be easily reproduced. If the combination of the video format types is set for each user, the user can select the desired video format type by simply selecting his / her combination when using the video output device. The operation can be simplified.

The present invention may be understood as the invention of the video display device. That is, the present invention provides video display means for displaying input video and video information having setting information storage means for storing setting information of the video display device including a predetermined number of video format types that can be displayed by the video display means. Applicable to a display device, provided separately from the setting information storage means and storing video format type storage means for storing a larger number of video format types than the predetermined number, and storing in the video format type storage means Video format type selection means for selecting the video format type to be stored in the setting information storage means from the video format types that have been recorded.
The video display device configured as described above has the setting information acquisition means for acquiring the setting information stored in the setting information storage means, and the video display device based on the setting information acquired by the setting information acquisition means. When configuring a video display system connected to a video output device having video format type setting means for setting the video format type of the video to be output, the information amount of the setting information stored in the setting information storage means is increased. The same effect as described above can be achieved in that the number of choices for the video format type of the video output from the video output device to the video display device can be increased.

  According to the present invention, the options of the video format type of the video output from the video output device to the video display device are increased without increasing the information amount of the setting information stored in the setting information storage means. Therefore, the display capability of the video display device can be used effectively. It is particularly suitable when the setting information is EDID or the like whose data size is defined by the VESA standard.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
FIG. 1 is a block diagram showing a schematic configuration of a video display system A provided with a monitor device X and a personal computer Y according to an embodiment of the present invention, and FIG. 2 is stored in an EEPROM 16 provided in the monitor device X. FIG. 3 is a flowchart for explaining an example of the procedure of the video format type selection process executed by the microcomputer 11 provided in the monitor device X. FIG.
First, the schematic configuration of the video display system A will be described with reference to the block diagram of FIG.
As shown in FIG. 1, the video display system A includes a monitor device X (an example of a video display device) and a personal computer Y (an example of a video output device, hereinafter referred to as a “computer Y”) that are communicably connected by wire or wireless. For short). Here, the monitor device X and the personal computer Y are connected by a communication system compliant with, for example, the DDC (Display Data Channel) standard, the DVI (Digital Visual Interface) standard, or the like. The monitor device X is merely an example of a video display device, and can be applied to a video display device such as a liquid crystal display device or a television receiver that displays an input video. The personal computer Y is only an example of a video output device, and may be used in a video output device such as a hard disk recorder, a DVD recorder, a digital camera, or a digital video camera that outputs video to an external video display device such as the monitor device X. Applicable.
In the video display system A configured as described above, video is output from the personal computer Y to the monitor device X in a video format type including a preset number of scanning lines, scanning method, resolution, and the like. The video is displayed on the monitor device X. For example, 525i, 525p, 750p, 1125i, 1125p, etc. correspond to the video format type. The video format type 525i has 525 scanning lines and the scanning method is interlaced, 525p has 525 scanning lines and the scanning method is progressive, 750p has 750 scanning lines and the scanning method is progressive, and 1125i. Indicates that the number of scanning lines is 1125 and the scanning method is interlaced, and 1125p indicates that the number of scanning lines is 1125 and the scanning method is progressive.

  As shown in FIG. 1, the monitor device X includes a CPU, a RAM, and the like, and controls the monitor device X in an integrated manner, and an operation button for performing operation input to the microcomputer 11. And the like, a DVI (Digital Visual Interface) circuit 13 having an interface for receiving a video signal from the personal computer Y, and various kinds of processes such as decoding processing on the video signal received by the DVI circuit 13 A display unit 15 (an example of a video display unit) including a video processing circuit 14 that performs video processing and outputs, a liquid crystal panel that displays video based on a video signal input from the video processing circuit 14, and peripheral devices thereof And a rewritable EEPROM 16 that stores setting information (see FIG. 2) relating to the monitor device X. An example of setting information storage means), a non-rewritable ROM 17 (an example of video format type storage means) that is provided separately from the EEPROM 16 and stores all video format types of video that can be displayed on the display unit 15; Is generally configured. The ROM 17 stores a larger number of video format types than the number of video format types included in the setting information stored in the EEPROM 16. In another embodiment, it is possible to use a rewritable EPROM instead of the EEPROM 16 or to use a non-rewritable PROM instead of the ROM 17.

On the other hand, the personal computer Y has a CPU, a RAM, etc., and executes a variety of processing, a keyboard used for operation input to the personal computer Y, a hard disk for storing various information, etc. The constituent elements included in.
In the personal computer Y, the control section reads the setting information stored in the EEPROM 16 provided in the monitor device X, and sets the video format type of the video output to the monitor device X based on the setting information. Is done. Here, the control unit for executing the setting information reading process corresponds to setting information acquisition means, and the control unit for setting the video format type corresponds to video format setting means.

Here, the contents of the setting information stored in the EEPROM 16 of the monitor device X will be described with reference to FIG.
As shown in FIG. 2, the EEPROM 16 has a storage area for storing, as the setting information, EDID having a data size defined by the VESA standard and having a data size of 128 bytes. More specifically, the EEPROM 16 stores a specified data storage area 16a for storing basic information such as the manufacturer name and date of manufacture of the monitor device X, and a standard video format type specified by VESA. Other than the standard video format type stored in the official timing storage area 16b, the basic timing storage area 16c for storing information used for changing the horizontal and vertical frequencies, and the like. The detailed timing storage areas 16d to 16g for storing the four video format types and the checksum storage area 16h for storing the checksum used for checking the transmission error.
In each of the detailed timing storage areas 16d to 16g, video format types that can be displayed on the monitor device X are stored. However, even if the monitor device X supports a number of video format types, there is a limit to the amount of information that can be stored in the detailed timing storage areas 16d to 16g. All video format types cannot be included in the setting information. Therefore, conventionally, the number of choices of video format types of video output from the personal computer Y to the monitor device X is limited by the amount of information that can be stored in the detailed timing storage areas 16d to 16g.

  However, in the monitor device X according to the embodiment of the present invention, the microcomputer 11 executes a video format type setting process (refer to the flowchart of FIG. 3) described later, whereby the detailed timing storage areas 16d to 16d of the EEPROM 16 are executed. The video format type stored in 16g is selected from a large number of video format types stored in the ROM 17. That is, the video format type acquired from the monitor device X by the personal computer Y can be changed on the monitor device X side. In the monitor device X, each time the contents stored in the detailed timing storage areas 16d to 16g are changed by the microcomputer 11, the video format type stored in the detailed timing storage areas 16d to 16g is changed. The combination is set and stored in a RAM or the like provided in the microcomputer 11 as a setting history. Here, the microcomputer 11 when executing the combination setting process corresponds to a combination setting unit.

Hereinafter, an example of the procedure of the video format type setting process executed by the microcomputer 11 provided in the monitor device X will be described with reference to the flowchart of FIG. In FIG. 3, S1, S2,... Represent processing procedure (step) numbers.
When the power of the monitor device X is turned on, the microcomputer 11 determines whether a menu screen display request for performing various settings related to the monitor device X has been made by the user (step S1). . Specifically, it is determined whether or not a menu screen display request signal is input to the microcomputer 11 when a user presses a menu button provided on the operation unit 12.
The determination process of step S1 is repeatedly executed until a display request for the menu screen is made (No side of S1). If it is determined that the display request is made (Yes side of S1), the process goes to step S2. Transition.
In step S 2, the microcomputer 11 outputs a menu screen to the display unit 15 via the image processing circuit 14, and the menu screen is displayed on the display unit 15.

Thereafter, in step S3, the microcomputer 11 determines whether or not the video format type setting item has been selected by the user from among the various setting items displayed on the menu screen. Specifically, it is determined whether or not the video format type setting item has been selected based on an operation signal input by the user operating the operation unit 12.
If it is determined in step S3 that the video format type setting item has been selected (Yes in S3), the process proceeds to step S4.

  Next, in step S4, the microcomputer 11 determines whether or not there is the setting history indicating that the video format type has been set in the monitor device X in the past. Specifically, it is determined whether or not the setting history is stored in a RAM or the like provided in the microcomputer 11. Here, when it is determined in step S4 that the setting history does not exist (Yes side of S4), the process proceeds to step S5, and when it is determined that it exists (No side of S4), The process proceeds to step S41.

First, a case will be described in which it is determined in step S4 that no setting history of the video format type exists, such as when the video format type setting process is executed for the first time on the monitor device X.
In this case, all the video format types that can be displayed on the monitor device X stored in the ROM 17 are read by the microcomputer 11 in step S5.
In step S6, the microcomputer 11 displays the video format type read in step S5 and the setting screen for selecting the video format type stored in each of the detailed timing storage areas 16d to 16g. The data is output to the unit 15 and displayed on the display unit 15.

Next, in step S7, the microcomputer 11 reads out the video format types stored in the detailed timing storage areas 16d to 16g from the ROM 17 based on the operation input to the operation unit 12 by the user. Is selected from the video format types. Here, the microcomputer 11 when executing such selection processing corresponds to the video format type selection means.
Thereafter, in step S8, the microcomputer 11 determines whether or not to end the selection of the video format type. Specifically, it is determined whether or not each video format type stored in the detailed timing storage areas 16d to 16g has been selected by the user from a number of video format types read from the ROM 17. Alternatively, the determination is made based on whether or not a setting end button or the like provided on the operation unit 12 has been pressed. Here, when it is determined in step S8 that the selection of the video format type has been completed, the process proceeds to step S9.

In step S9, the video format type selected in step S7 is stored in the detailed timing storage areas 16d to 16g by the microcomputer 11. In the initial setting and past setting processing, when the video format type is already stored in the detailed timing storage areas 16d to 16g, the video format type is updated. Accordingly, the personal computer Y can acquire the video format type set in the video format type setting process by reading the setting information.
As described above, in the monitor device X, the video format type stored in the detailed timing storage areas 16 d to 16 g of the EEPROM 16 can be selected from a large number of video format types stored in the ROM 17. That is, it is possible to increase the options of the video format type of the video output from the personal computer Y to the monitor device X without increasing the information amount of the setting information stored in the EEPROM 16. Therefore, the display capability of the monitor device X can be used effectively.

On the other hand, the case where it is determined in step S4 that the setting history exists will be described. In this case, in step S41, the setting history stored in a RAM (not shown) provided in the microcomputer 11 is read by the microcomputer 11.
In step S42, the setting history read in step S41 is output to the display unit 15 and displayed on the display unit 15. At this time, if there are a plurality of setting histories, the plurality of setting histories are displayed on the display unit 15. As described above, the setting history indicates a combination of video format types stored in each of the detailed timing storage areas 16d to 16g.

Next, in step S43, the microcomputer 11 determines whether or not to select a combination of video format types stored in each of the detailed timing storage areas 16d to 16g from the setting history. Specifically, the determination is made based on the operation input of the operation unit 12 by the user.
Here, when it is determined that an operation input for selecting the combination of video format types stored in each of the detailed timing storage areas 16d to 16g from the setting history is performed by the user (Yes side of S43). ), The process proceeds to step S44. When it is determined that an operation input indicating that the combination of video format types stored in each of the detailed timing storage areas 16d to 16g is not selected from the setting history is made by the user (No side in S43). , The process moves to step S5, and a process for selecting a video format type to be stored in each of the detailed timing storage areas 16d to 16g is executed.

In the subsequent step S44, the setting history is selected by the microcomputer 11 based on an operation input to the operation unit 12 by the user. Here, a combination of video format types stored in each of the detailed timing storage areas 16d to 16g is selected by selecting the setting history. Here, the microcomputer 11 when executing such selection processing also corresponds to the video format type selection means.
Thereafter, in step S45, the microcomputer 11 determines whether or not the setting history selection is to be ended. Specifically, it is determined whether or not the setting history is selected by the user. Alternatively, the determination is made based on whether or not a setting end button or the like provided on the operation unit 12 has been pressed. If it is determined in step S45 that the setting history has been selected, the process proceeds to step S9.

In step S9, the video format type is stored in each of the detailed timing storage areas 16d to 16g by the microcomputer 11 in the combination shown in the setting history selected in step S44. In the initial setting and past setting processing, when the video format type is already stored in the detailed timing storage areas 16d to 16g, the video format type is updated.
As described above, in the monitor device X, when the same setting as the past setting history in the monitor device X is performed, the operation of selecting again the video format type stored in each of the detailed timing storage areas 16d to 16g. Can be saved.
For example, when the monitor device X is shared by a plurality of users, the user can set a combination of video format types to be stored in the detailed timing storage areas 16d to 16g for each user in advance. At the start of use of the monitor device X, the video format stored in each of the detailed timing storage areas 16d to 16g can be easily set to a desired video format by selecting a combination corresponding to itself.

The block diagram which shows schematic structure of the video display system A provided with the monitor apparatus X and personal computer Y which concern on embodiment of this invention. The figure for demonstrating the content of EDID memorize | stored in EEPROM16 provided in the monitor apparatus X which concerns on embodiment of this invention The flowchart for demonstrating an example of the procedure of the video format classification selection process performed by the microcomputer 11 provided in the monitor apparatus X which concerns on embodiment of this invention.

Explanation of symbols

A ... Video display system X ... Monitor device (an example of a video display device)
Y ... Personal computer (an example of a video output device)
DESCRIPTION OF SYMBOLS 11 ... Microcomputer 12 ... Operation part 13 ... DVI circuit 14 ... Video processing circuit 15 ... Display part (an example of a video display means)
16 EEPROM (an example of setting information storage means)
17 ... ROM (an example of video format type storage means)
S1, S2,... Processing procedure (step) number

Claims (7)

Video display device having video display means for displaying input video and setting information storage means for storing setting information of the video display device including a predetermined number of video format types that can be displayed on the video display means, and the setting Setting information acquisition means for acquiring setting information stored in the information storage means, and video format type setting for setting the video format type of the video output to the video display device based on the setting information acquired by the setting information acquisition means And a video display system comprising a video output device having means,
The video display device is
Provided separately from the setting information storage means, a video format type storage means for storing a larger number of the video format types than the predetermined number, and the setting from among the video format types stored in the video format type storage means And a video format type selecting means for selecting the video format type stored in the information storage means.   The video display system according to claim 1, wherein the video format type includes one or more of the number of scanning lines, the scanning method, and the resolution that can be displayed by the video display means.   The video display system according to claim 1, wherein the setting information is EDID of VESA standard.   4. The video display system according to claim 1, wherein the setting information storage means is a rewritable EPROM or EEPROM.   5. The video display system according to claim 1, wherein the video format type storage means is a non-rewritable ROM or PROM. A combination setting means for setting a combination of the video format types stored in the setting information storage means;
6. The video format type selection unit selects the video format type to be stored in the setting information storage unit by selecting a combination set by the combination setting unit. Video display system. Video display comprising: video display means for displaying input video; and setting information storage means for storing setting information of the video display device including a predetermined number of video format types relating to the display capability of the video display means A device,
Video format type storage means that is provided separately from the setting information storage means and stores a larger number of video format types than the predetermined number related to the display capability of the video display means;
Video format type selection means for selecting a video format type stored in the setting information storage means from the video format types stored in the video format type storage means;
A video display device comprising:

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