WO2018000852A1 - 显示设备的控制方法、控制装置以及显示设备 - Google Patents

显示设备的控制方法、控制装置以及显示设备 Download PDF

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Publication number
WO2018000852A1
WO2018000852A1 PCT/CN2017/075883 CN2017075883W WO2018000852A1 WO 2018000852 A1 WO2018000852 A1 WO 2018000852A1 CN 2017075883 W CN2017075883 W CN 2017075883W WO 2018000852 A1 WO2018000852 A1 WO 2018000852A1
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Prior art keywords
display device
video signal
edid information
display
data format
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PCT/CN2017/075883
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English (en)
French (fr)
Inventor
吕本登
Original Assignee
京东方科技集团股份有限公司
北京京东方多媒体科技有限公司
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Priority to US15/571,378 priority Critical patent/US20180226052A1/en
Publication of WO2018000852A1 publication Critical patent/WO2018000852A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/02—Graphics controller able to handle multiple formats, e.g. input or output formats
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/04—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
    • G09G2370/042—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller for monitor identification
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/04—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
    • G09G2370/045—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller using multiple communication channels, e.g. parallel and serial
    • G09G2370/047—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller using multiple communication channels, e.g. parallel and serial using display data channel standard [DDC] communication
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/12—Use of DVI or HDMI protocol in interfaces along the display data pipeline

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a control method, a control device, and a corresponding display device of a display device.
  • HDMI digital video interface
  • HDMI SOURCE HDMI source device
  • STB set top box
  • HDMI SINK HDMI sink device
  • EDID is a VESA standard data format that enables display devices to support plug-and-play functionality.
  • EDID describes the display characteristics and display capabilities of the display device itself, and the source device (eg, PC, DVD, STB, etc.) outputs the signal format supported by the display device according to the attribute value corresponding to the EDID.
  • a method of controlling a display device comprising: selecting extended display identification data EDID information matching the data format according to a data format of the acquired video signal; and, according to the selected EDID information, The display device controls the display of the video signal in a corresponding data format.
  • the acquired data format includes a video signal corresponding to Resolution.
  • control method further includes: analyzing a data format of the video signal input by the source device, and selecting corresponding EDID information according to the analyzed data format.
  • the source device can provide information about the data format of the input video signal in an explicit or implicit manner.
  • the stored EDID information may be displayed to the user for the user to select a matching data format to be used by the display device to display the video signal.
  • the definition of the video input, the horizontal image size, the vertical image size, the color characteristics, the timing, the display transmission characteristics, and the like can be displayed to the user. Thereby, the user can be made to modify the displayed EDID information as needed, and the modified EDID information is saved.
  • the resolution format supported by the display device may be displayed to the user for the user to select a resolution format to be used by the display device to display the video signal.
  • the display device may be set to display the video signal at the highest resolution supported by the display device when the resolution of the input video signal is higher than the resolution supported by the display device.
  • the display device may be set to the input video signal supported by the display device without storing the EDID information matching the resolution of the input video signal.
  • the resolution of the resolution is displayed closest to the resolution. In this case, distortion caused by display of the video signal from the source device can be minimized, and compatibility with the source device is ensured to the utmost extent.
  • the EDID information selected by the user may be provided to the source device, so that the source device can adjust the resolution format of the video signal input to the display device in real time according to the EDID information selected by the user, thereby ensuring the input video signal. Matches the resolution selected by the user, improving compatibility with display devices.
  • a control device for a display device includes: a selector, selecting extended display identification data EDID information matching the data format according to a data format of the acquired video signal; and a reader/writer, connecting with the selector, reading the selected EDID information, so that the display device The video signal is displayed based on the read EDID information.
  • control apparatus may further include a memory, where at least one piece of EDID information supported by the display device is stored.
  • each of the pieces of EDID information corresponds to a video signal data format, and The supported timing and bandwidth ranges are different.
  • the memory can also be located as a separate storage device external to the control device and communicated with the control device via the bus.
  • control device further includes: a data analyzer connected to the selector, performing data format analysis on the video signal input by the source device, and sending the analysis result to the selection Device.
  • control device further comprises: a communication interface, connected to the source device and the data analyzer, receiving the video signal input by the source device and providing the same to the data analyzer.
  • the data format includes a resolution corresponding to the video signal.
  • the reader/writer is further connected to the memory, and the EDID information stored in the memory is read according to a user instruction and transmitted to the display device.
  • the stored EDID information can be displayed to the user for the user to select or preset the EDID information to be used by the display device.
  • the reader/writer is further connected to the memory, and the modified EDID information is written into the memory according to the modification of the EDID information displayed on the display device by the user.
  • the EDID information stored in the memory can be changed according to the setting of the user.
  • the selector when the resolution of the input video signal is higher than the resolution supported by the display device, the selector selects the highest resolution supported by the display device for display by the display device. .
  • the selector selects the resolution closest to the resolution of the video signal supported by the display device when the EDID information matching the resolution of the input video signal is not stored.
  • the rate is displayed for the display device.
  • the reader when receiving the EDID information selected by the user, provides the selected EDID information to the source device through the communication interface, so that the source device changes the location according to the EDID information.
  • the data format of the output video signal thereby, the source device can be caused to change the data format of the signal output to the display device accordingly according to the stored EDID information so as to be compatible with the display device.
  • a control device of a display device comprises: a selector, selecting the stored EDID information matching the data format according to the data format of the acquired video signal; the controller is connected with the selector, and controls the display device to the corresponding data according to the selected EDID information Format to display video signals.
  • control device further includes: a data analyzer connected to the controller, analyzing the data format of the input video signal, and transmitting the result of the analysis to the controller.
  • a data analyzer connected to the controller, analyzing the data format of the input video signal, and transmitting the result of the analysis to the controller.
  • the controller controls the selector to select the stored EDID information according to the analyzed data format, for the source device to read, and select an appropriate resolution for the display device to display the video signal.
  • control device further includes: a graphical user interface (GUI), displaying the stored EDID information to the user for selection by the user, and further preset or adjusting the EDID information according to the user's needs.
  • GUI graphical user interface
  • the controller may control the selector to select the matching EDID information stored in the memory according to the data format selected by the user on the user interface, for the source device to read, and select an appropriate resolution for the display device to display.
  • Video signal may control the selector to select the matching EDID information stored in the memory according to the data format selected by the user on the user interface, for the source device to read, and select an appropriate resolution for the display device to display.
  • the controller may modify the EDID information stored in the memory according to the EDID information input by the user, so as to adjust the EDID setting for the display device in time according to the need.
  • a display device including the above-described control device.
  • a plurality of EDID data may be stored in advance, respectively corresponding to data formats of different video signals, and selected according to a data format of a signal input by the source device or according to a data format input by a user.
  • the matched EDID data is used by the display device. In this way, the compatibility between the display device and the source device is improved, and the display resolution of the display device can be utilized to the utmost extent.
  • FIG. 1 is a block diagram of a video system in accordance with an exemplary embodiment of the present disclosure
  • FIG. 2 is a flowchart of a control method of a video device, according to an exemplary embodiment of the present disclosure
  • FIG. 3 illustrates a menu of user-settable EDID items displayed on a display interface of a video device, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 4 illustrates a menu of user-configurable resolutions displayed on a display interface of a video device, in accordance with an exemplary embodiment of the present disclosure
  • FIG. 5 illustrates an EDID flow for changing a display device, according to an exemplary embodiment of the present disclosure
  • FIG. 6 is a block diagram of a video device in accordance with an exemplary embodiment of the present disclosure.
  • FIGS. 7A-7B are block diagrams of control devices for a display device, in accordance with an exemplary embodiment of the present disclosure.
  • FIG. 1 shows a block diagram of a video system in accordance with an exemplary embodiment of the present disclosure.
  • the video system 10 includes a source device 20 and a display device 30, which are connected to each other by a digital cable 40.
  • a source device 20 and a display device 30, which are connected to each other by a digital cable 40.
  • the principle of the embodiments of the present disclosure will be described by taking an HDMI interface as an example. However, it should be noted that the present principles are not limited to video systems employing the HDMI interface, but can be applied to other digital interfaces, such as video systems employing the DVI interface.
  • the source device 20 includes a processor 210, a memory 220, and an HDMI communication interface 230.
  • the processor 210 is connected to the memory 220 and the HDMI communication interface 230 via a bus, and controls the operations of the memory 220 and the HDMI communication interface 230.
  • the memory 210 stores a control program such as the source device 20, setting information on video/audio.
  • the memory 210 may be a flash memory, a hard disk drive, a DVD drive, or the like.
  • Communication interface 230 transmits the video/audio signal to display device 30 via a digital cable, such as an HDMI cable, transmits control commands to display device 30, and receives relevant requests from display device 30.
  • Display device 30 outputs video/audio signals from a source device, for example, display device 30 can be a television, projector, monitor, or other display device.
  • the display device 30 includes a controller 310, a memory 320, a communication interface 330, and a display component 340 that connects the memory 320, the communication interface 330, and the display component 340 via a bus, and controls the memory 320, the communication interface 330, and the display.
  • the memory 320 stores, for example, a control program related to the display device 30, video/audio settings, for example, EDID information.
  • Memory 320 can be an EEPROM, FLASH, hard drive, and the like.
  • the communication interface 330 receives the video/audio signal transmitted by the source device 20 via the digital cable, related control commands, and may be directed to the source device 20. send request.
  • the display component 340 displays the video signal processed by the controller 310 to the user, and can also serve as a human interface such that the user can view and change settings related to the display device 30, for example, viewing the EDID settings and making changes.
  • display component 340 is illustrated as being integrated within display device 30, it should be understood that display component 340 can be fully connected as a separate component to the display device via a signal cable, as desired, such an embodiment The principles of the present disclosure are not departed.
  • the extended display identification data EDID is stored in the memory 320 of the display device, wherein the EDID includes the identification information of the display device itself and the video format/attribute supported by the display device, for example, the EDID includes the display device. Resolution, color space, and usability of supported HDMI modes.
  • the source device can use the information about the EDID to configure the graphics subsystem, and the application software program may also use some of the information in the EDID. For proper operation, it is generally necessary to ensure that the source device can read the contents of the EDID when the display device is turned on or off. Generally, when an HDMI cable is used to connect a source device to a display device to enable data transmission, the source device reads the EDID from the display device.
  • the EDID can be switched as needed to match the corresponding HDMI input, thereby avoiding possible crashes such as video systems.
  • the display device supports 4K resolution
  • the corresponding 4K timing is added to the EDID, and the corresponding supported HDMI bandwidth and frequency is increased.
  • the source device reads the data, there may be incompatibility or crash.
  • the EDID data of the display device needs to be replaced to match the source device to ensure compatibility between the two.
  • the EDID corresponding to each HDMI is fixed in the current device, EDID switching is not supported, resulting in compatibility cannot be guaranteed.
  • a plurality of EDID data may be pre-stored in a memory of the display device, respectively corresponding to data formats of different video signals, and EDID data matched thereto is selected according to the input data format.
  • the compatibility between the display device and the source device is improved, and the display resolution of the display device can be utilized to the utmost extent.
  • the principles of the present disclosure are described in detail below primarily with respect to switching resolution in EDID information.
  • the principles of the present disclosure are not limited to application to switching only to the resolution of the display device, but may be extended as needed to switch other information contained in the EDID, such as for control timing, chroma space, display. Other information such as type is switched. For example, taking a display device as a 4K TV, it can be set in the EDID for the 4K timing and the corresponding HDMI bandwidth and frequency supported.
  • control method for a display device includes: S210, selecting extended display identification data EDID information matching the data format according to the acquired data format; and S220, controlling the display device to perform the corresponding data format according to the selected EDID information. display.
  • the acquired data format includes a resolution corresponding to the video signal.
  • the control method further comprises: analyzing a data format of the input video signal, and selecting corresponding EDID information according to the analyzed data format.
  • the controller 310 in the display device determines the EDID information that matches it by analyzing the signal from the source device 20 received by the communication interface 330. In this way, the EDID setting that the display device matches the video signal input by the source device can be automatically selected without user intervention.
  • the source device can provide information about the data format of the input video signal to the display device in an explicit or implicit manner.
  • the stored EDID information may be displayed to the user on the display component of the display device for the user to select a matching data format to be used by the display component.
  • the definition of the video input, the maximum horizontal image size, the maximum vertical image size, the color characteristics, the timing, the display transmission characteristics, and the like can be displayed to the user.
  • the user may modify the displayed EDID information as needed, and the controller 310 saves the modified EDID information to the memory 320.
  • the resolution format supported by the user may be displayed on the display component of the display device for the user to select the resolution format to be used by the display component.
  • the display device may be set to display the video signal at the highest resolution when the resolution of the input video signal is higher than the resolution supported by the display device. Specifically, if the processor 310 in the display device determines the resolution of the input video signal is higher than the highest resolution supported by the display component of the display device by analyzing the received signal from the source device 20 , the video signal from the source device is displayed at the highest resolution.
  • the input video may not be found at the controller 310.
  • the display section is set to display at a resolution closest to the resolution of the input video signal. under these circumstances, The distortion generated by the display of the video signal from the source device can be minimized to ensure maximum compatibility with the source device.
  • the above describes selecting or changing the EDID information stored by the display device according to the video signal output by the source device or the data format input by the user, thereby ensuring compatibility of the display device with the source device.
  • the user-selected EDID information may be provided to the source device through the communication interface 330 such that the source device changes the data format of the video signal output to the display device according to the EDID information. For example, as shown in FIG.
  • the selected resolution is transmitted to the source device through, for example, a communication interface of the display device, so that the source
  • the device can adjust the resolution format of the video signal input to the display device in real time, thereby ensuring that the input video signal matches the resolution selected by the user, improving compatibility with the display device.
  • FIG. 5 illustrates a flow of a method for changing an EDID of a display device, according to an exemplary embodiment of the present disclosure.
  • the display device determines whether to perform an HDMI connection; S505, after determining that the HDMI connection is made, determines whether an EDID change process is required; and S510, if an EDID change process is required, determining whether to perform the EDID manually.
  • S5 in the case of manually performing the EDID setting, displaying the currently settable EDID information item on the display screen, prompting the user to select the corresponding information item and setting, and writing the set information item to the memory (It may be a memory integrated in the display device or a memory equipped externally); when it is determined that the EDID information is not manually set, the EDID setting needs to be performed in an automatic manner, and S520 analyzes the input of the source device to the display device.
  • the memory It may be a memory integrated in the display device or a memory equipped externally
  • the selected EDID information item can also be sent to the source device, so that the source device can
  • the data format of the video signal sent to the display device is adjusted to ensure compatibility between the source device and the display device.
  • FIG. 6 illustrates a control device for a display device according to an exemplary embodiment of the present disclosure.
  • the control device may include: a selector 610, selecting EDID information matching the data format according to the acquired data format; and the reader/writer 620 is connected to the selector 610 to read the selected EDID information.
  • the display device is caused to display based on the read EDID information.
  • control device may further include a memory 630, where the at least one extended display identification data EDID information supported by the display device is stored.
  • EDID information corresponds to a video signal data format, and the supported timing and bandwidth ranges are different.
  • the memory 630 can also be located as a separate storage device external to the control device and communicate with the control device via the bus.
  • control apparatus may further include: a data analyzer 640 connected to the selector 610, performing data format analysis on the video signal input by the source device, and analyzing the result Send to the selector.
  • a data analyzer 640 connected to the selector 610, performing data format analysis on the video signal input by the source device, and analyzing the result Send to the selector.
  • control device may further include: a communication interface 650 connected to the source device and the data analyzer, receiving the video signal input by the source device and providing the data signal to the data analyzer.
  • a communication interface 650 connected to the source device and the data analyzer, receiving the video signal input by the source device and providing the data signal to the data analyzer.
  • the data format may include a resolution corresponding to the video signal.
  • the reader/writer 620 may also be connected to the memory 630, and read the EDID information stored in the memory according to a user instruction and transmit it to the display device. Thereby, the stored EDID information can be displayed to the user for the user to select or preset the EDID information to be used by the display device.
  • the reader/writer 620 is further connected to the memory 630, and the modified EDID information is written into the memory 630 according to the modification of the EDID information displayed on the display device by the user.
  • the EDID information stored in the memory can be changed according to the setting of the user.
  • the selector selects the highest resolution stored in the memory for the display device. Display.
  • the selector selects the resolution closest to the resolution for the display device to perform. display.
  • the reader when receiving the EDID information selected by the user, provides the selected EDID information to the source device through the communication interface, so that the source device changes the location according to the EDID information.
  • the data format of the output video signal thereby, the source device can be caused to change the data format of the signal output to the display device accordingly according to the stored EDID information so as to be compatible with the display device.
  • various components included in the control device may be utilized At least one of an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a programmable logic device (PLD) is implemented entirely by hardware; or a digital signal processor (DSP) or a micro control unit can also be used.
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • PLD programmable logic device
  • DSP digital signal processor
  • MCU central processing unit
  • CPU central processing unit
  • FIG. 7A illustrates a control device of a display device in accordance with an embodiment of the present disclosure.
  • the control device includes: a selector 710 that selects the stored EDID information that matches the data format according to the acquired data format; and a controller 720 that is coupled to the selector, according to the selection
  • the EDID information controls the display device to display the video signal in a corresponding data format.
  • the control device may also be connected to the external memory 800, wherein the memory 800 stores a plurality of extended display identification data EDID information supported by the display device.
  • each of the EDID information corresponds to a video signal data format and the supported timing and bandwidth ranges are different.
  • the memory 800 can also be integrated in the control device as its internal memory.
  • the control device further includes: a data analyzer 730, wherein the data analyzer 730 is connected to the controller 720, analyzes a data format of the input video signal, and transmits the analysis result to the controller; Based on the analyzed data format, the controller 720 controls the selector to select the matching EDID information stored in the memory for reading by the source device and select an appropriate resolution for display by the display device.
  • a data analyzer 730 wherein the data analyzer 730 is connected to the controller 720, analyzes a data format of the input video signal, and transmits the analysis result to the controller; Based on the analyzed data format, the controller 720 controls the selector to select the matching EDID information stored in the memory for reading by the source device and select an appropriate resolution for display by the display device.
  • FIG. 7B illustrates a control device of another display device in accordance with an embodiment of the present disclosure.
  • the control device includes: a selector 750 that searches for and selects EDID information stored in the memory that matches the data format according to the acquired data format; and a controller 760 that is coupled to the selector, Based on the selected EDID information, the display device is controlled to display in the corresponding data format.
  • the control device also includes a graphical user interface (GUI) 770.
  • GUI graphical user interface
  • control device may have a dedicated user interface or may display the stored EDID information to the user for selection by the user through the communication interface using the controlled display device as a user interface, and may also perform EDID information according to the user's needs. Preset or adjust.
  • control device may also be connected to the external memory 820, wherein the memory 820 stores a plurality of extended display identification data EDID information supported by the display device.
  • each of the EDID information corresponds to a video signal data format and the supported timing and bandwidth ranges are different.
  • the memory 820 can also be integrated in the control device as its internal memory.
  • the controller can control the selection according to a data format selected by the user on the user interface.
  • the device selects the matching EDID information stored in the memory for reading by the source device and selects an appropriate resolution for display by the display device.
  • the controller may modify the EDID information stored in the memory according to the EDID information input by the user, so as to adjust the EDID setting for the display device in time according to the need.
  • a display device including the above-described control device.
  • a plurality of EDID data may be stored in advance, respectively corresponding to data formats of different video signals, and selected according to a data format of a signal input by the source device or according to a data format input by a user.
  • the matched EDID data is used by the display device. In this way, the compatibility between the display device and the source device is improved, and the display resolution of the display device can be utilized to the utmost extent.

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  • Computer Hardware Design (AREA)
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Abstract

一种显示设备（30）的控制方法、控制装置以及相应的显示设备（30）。该控制方法包括：根据获取的视频信号的数据格式选择与该数据格式匹配的扩展显示标识数据EDID信息（S210）；以及根据选择的EDID信息，控制显示设备（30）以相应的数据格式来显示视频信号（S220）。该控制方法、控制装置和显示设备（30），可以根据信源设备（20）输入的信号的数据格式或者根据用户输入的数据格式来选择与之相匹配的EDID数据供显示设备（30）在显示视频信号时使用。通过这种方式，改善了显示设备（30）与信源设备（20）之间的兼容性，并且可以最大程度地利用显示设备（30）的显示分辨率。

Description

显示设备的控制方法、控制装置以及显示设备 技术领域
本公开涉及显示技术领域，具体涉及一种显示设备的控制方法、控制装置以及相应的显示设备。
背景技术
近来，数字视频已经比较普遍，通常可以通过数字接口将多媒体源(例如机顶盒、DVD播放器以及PC)提供的数字视频传输到视频显示设备(例如TV)以便对从多媒体源接收的数字视频进行显示。数字接口可以是数字视频接口(DVI)或者高清晰度多媒体接口(HDMI)等。以HDMI接口为例，HDMI信源设备(HDMI SOURCE)，诸如DVD播放器、机顶盒(STB)、蓝光播放器等，通过HDMI接口与HDMI接收设备(HDMI SINK)例如显示设备TV连接。
通常，在HDMI接收设备，例如显示设备侧的扩展显示标识数据EDID中描述与控制信息有关的信息。EDID是一种VESA标准数据格式，用于使显示设备支持即插即用功能。EDID描述了显示设备自身的显示特性与显示能力，信源设备(例如PC、DVD、STB等)根据EDID相应的属性值输出显示设备所支持的信号格式。
随着技术的发展，已经出现了支持多路HDMI输入的显示设备。然而，在现有的显示设备中，与每一路HDMI对应的EDID是固定的，当输入的某一路HDMI数据与相应的EDID数据不匹配时，会产生兼容性问题，导致设备死机等故障。
发明内容
根据本公开的一方面，提供了一种控制显示设备的方法，该方法包括：根据获取的视频信号的数据格式选择与该数据格式匹配的扩展显示标识数据EDID信息；以及根据选择的EDID信息，控制显示设备以相应的数据格式对视频信号进行显示。
可选地，根据本公开的实施例，所获取的数据格式包括视频信号对应的 分辨率。
可选地，根据本公开的实施例，该控制方法还包括：分析信源设备输入的视频信号的数据格式，并且根据分析的数据格式选择对应的EDID信息。
可选地，信源设备可以通过显式或者隐式的方式提供有关所输入的视频信号的数据格式的信息。
可选地，可以向用户显示所存储的EDID信息，以供用户选择显示设备显示视频信号所要使用的相匹配的数据格式。可选地，可以向用户显示视频输入的清晰度、水平图像大小、垂直图像大小、颜色特性、时序、显示传输特性等。由此，可以使得用户根据需要对所显示的EDID信息进行修改，并且保存修改后的EDID信息。
可选地，根据本公开的实施例，可以向用户显示显示设备所支持的分辨率格式，以供用户选择显示设备显示视频信号所要使用的分辨率格式。
可选地，根据本公开的一实施例，可以在输入的视频信号的分辨率高于显示设备所支持的分辨率时，将显示设备设置为以该显示设备支持的最高分辨率显示视频信号。
可选地，根据本公开的一实施例，可以在未存储与输入的视频信号的分辨率相匹配的EDID信息的情况下，将该显示设备设置为以该显示设备支持的与输入的视频信号的分辨率最接近的分辨率进行显示。在这种情况下，可以使来自信源设备的视频信号的显示产生的失真最小，最大程度地保证与信源设备的兼容性。
可选地，可以将用户选择的EDID信息提供给信源设备，使得信源设备可以根据用户选择的EDID信息实时地调整向显示设备输入的视频信号的分辨率格式，从而确保所输入的视频信号与用户所选择的分辨率相匹配，提高了与显示设备的兼容性。
根据本公开的另一方面，提供了一种用于显示设备的控制装置。该控制装置包括：选择器，根据获取的视频信号的数据格式选择与该数据格式匹配的扩展显示标识数据EDID信息；读写器，与选择器连接，读取所选择的EDID信息，使得显示设备根据读取的EDID信息对视频信号进行显示。
可选地，根据本公开的一实施例，该控制装置还可以包括存储器，其中存储显示设备所支持的至少一项EDID信息。
可选地，其中每一项EDID信息对应于一种视频信号数据格式，并且所 支持的时序和带宽范围不同。
可选地，存储器也可以作为独立的存储器件位于控制装置的外部，通过总线与控制装置通信。
可选地，根据本公开的一实施例，该控制装置还包括：数据分析器，与选择器相连接，对信源设备输入的视频信号进行数据格式的分析，并且将分析的结果发送给选择器。
可选地，该控制装置还包括:通信接口，与信源设备和数据分析器相连接，接收信源设备输入的视频信号并且将其提供给数据分析器。
可选地，根据本公开的一实施例，数据格式包括视频信号对应的分辨率。
可选地，根据本公开的一实施例，读写器还与存储器连接，根据用户指令读取存储器存储的EDID信息并且传输给显示设备。由此，可以向用户显示所存储的EDID信息，以供用户选择或者预置显示设备要使用的EDID信息。
可选地，根据本公开的一实施例，读写器还与存储器连接，根据用户对显示设备上显示的EDID信息的修改，将修改后的EDID信息写入存储器中。由此，可以根据用户的设置，改变存储器中存储的EDID信息。
可选地，根据本公开的一实施例，其中，在所输入的视频信号的分辨率高于显示设备所支持的分辨率时，选择器选择显示设备所支持的最高分辨率供显示设备进行显示。
可选地，根据本公开的一实施例，其中，在未存储与输入的视频信号的分辨率相匹配的EDID信息时，选择器选择显示设备所支持的与视频信号的分辨率最接近的分辨率供显示设备进行显示。
可选地，根据本公开的一实施例，其中，在接收到用户选择的EDID信息时，读取器将选择的EDID信息通过通信接口提供给信源设备，使得信源设备根据EDID信息改变所输出的视频信号的数据格式。由此，可以使得信源设备根据所存储的EDID信息，相应地改变输出给显示设备的信号的数据格式，以便与显示设备相兼容。
根据本公开的另一方面，提供了一种显示设备的控制装置。该控制装置包括：选择器，根据获取的视频信号的数据格式选择所存储的与该数据格式匹配的EDID信息；控制器，与选择器连接，根据选择的EDID信息，控制显示设备以相应的数据格式来显示视频信号。
可选地，该控制装置还包括：数据分析器，与控制器连接，对输入的视频信号的数据格式进行分析，并且将分析的结果发送给控制器。
可选地，控制器根据所分析的数据格式，控制选择器选择所存储的与之匹配的EDID信息，供信源设备读取，并选择合适的分辨率供显示设备显示视频信号。
可选地，该控制装置还包括：图形用户接口(GUI)，向用户显示所存储的EDID信息供用户选择，并且还根据用户的需求，对EDID信息进行预置或者调整。
可选地，控制器可以根据用户在用户界面上选择的数据格式，控制选择器选择存储器中存储的与之匹配的EDID信息，供信源设备读取，并选择合适的分辨率供显示设备显示视频信号。
可选地，控制器可以根据用户输入的EDID信息而修改存储器中存储的EDID信息，从而根据需要及时调整用于显示设备的EDID设置。
根据本公开的一实施例，提供了一种显示设备，其包括上述的控制装置。
根据本公开的实施例，可以在预先存储多个EDID数据，分别对应于不同的视频信号的数据格式，并且根据信源设备输入的信号的数据格式或者根据用户输入的数据格式来选择与之相匹配的EDID数据供显示设备使用。通过这种方式，改善了显示设备和与信源设备之间的兼容性，并且可以最大程度地利用显示设备的显示分辨率。
附图说明
为了更清楚地说明本公开的实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本发明的限制。
图1是根据本公开的示例性实施例的一种视频系统的框图；
图2是根据本公开的示例性实施例的一种视频设备的控制方法的流程图；
图3示出了根据本公开的示例性实施例的一种在视频设备的显示界面上显示的用户可设置的EDID项目的菜单；
图4示出了根据本公开的示例性实施例的一种在视频设备的显示界面上显示的用户可设置的分辨率的菜单；
图5示出了根据本公开的示例性实施例的一种用于改变显示设备的EDID流程；
图6是根据本公开的示例性实施例的一种视频设备的框图；以及
图7A-7B是根据本公开的示例性实施例的一种用于显示设备的控制装置的框图。
具体实施方式
下面将结合附图对本公开的实施例进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开的一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，也属于本公开保护的范围。
图1示出了根据本公开的一示例性实施例的视频系统的框图。如图1所示，该视频系统10包括：信源设备20和显示设备30，二者通过数字线缆40彼此连接。在以下实施例中，为便于讨论，以HDMI接口为例来说明本公开实施例的原理。然而，应注意，本原理不限于采用HDMI接口的视频系统，而是可以应用到采用其它数字接口，例如采用DVI接口的视频系统。
作为示例，信源设备20包括处理器210、存储器220，以及HDMI通信接口230。处理器210与存储器220和HDMI通信接口230通过总线连接，并且控制存储器220和HDMI通信接口230的操作。存储器210存储诸如信源设备20的控制程序、有关视频/音频的设置信息。存储器210可以是闪存、硬盘驱动器、DVD驱动器等。通信接口230将视频/音频信号通过数字线缆，例如HDMI线缆，传输到显示设备30、向显示设备30发送有关控制命令并接收来自显示设备30的有关请求。
显示设备30输出来自信源设备的视频/音频信号，例如，显示设备30可以是电视机、投影仪，监视器，或者其它显示设备。作为示例，显示设备30包括：控制器310、存储器320、通信接口330以及显示部件340，控制器310通过总线连接存储器320、通信接口330和显示部件340，并且控制存储器320、通信接口330和显示部件340的操作。存储器320存储诸如有关显示设备30的控制程序、视频/音频设置，例如，EDID信息。存储器320可以是EEPROM、FLASH、硬盘驱动器等等。通信接口330接收信源设备20经由数字线缆传输而来的视频/音频信号、有关控制命令，并且可以向信源设备20 发送请求。显示部件340将经过控制器310处理的视频信号向用户显示，并且还可以作为人机接口使得用户可以查看并更改显示设备30的有关设置，例如，查看EDID设置并进行更改。尽管在图1中，显示部件340被例示为被集成在显示设备30内部，然而，应理解，根据需要，显示部件340完全可以作为独立的部件通过信号线缆与显示设备连接，这样的实施方式不脱离本公开的原理。
如上所述，通常，在显示设备的存储器320中存储了扩展显示标识数据EDID，其中EDID包含显示设备自身的标识信息以及显示设备所支持的视频格式/属性等内容，例如，EDID包括显示设备所支持的HDMI模式的分辨率、颜色空间和可用性。信源设备可以使用有关EDID的信息来配置图形子系统，应用软件程序也可能会使用到EDID中的一部分信息。为正确操作，一般要确保在显示设备打开或关闭时信源设备能够读取到EDID的内容。通常，在使用HDMI线缆将信源设备与显示设备连接以便能够进行数据传输时，信源设备从显示设备读取EDID。如上所述，为了保证采用多路HDMI输入的显示设备与信源设备之间的兼容性，可以根据需要来切换EDID，以便与相应的HDMI输入相匹配，从而避免视频系统可能出现的死机等故障。例如，当显示设备支持4K分辨率时，在EDID中增加了对应的4K时序，并且增加了对应的可支持的HDMI带宽与频率。当信源设备读取到这些数据时，可能会出现不兼容或者死机的情况，需要更换显示设备的EDID数据重新匹配该信源设备才能保证二者之间的兼容性。然而，由于目前的设备中，与每一路HDMI对应的EDID是固定的，并不支持EDID的切换，导致兼容性无法保证。
为解决上述问题，根据本原理，可以在显示设备的存储器中预先存储多个EDID数据，分别对应于不同的视频信号的数据格式，并且根据输入的数据格式来选择与之相匹配的EDID数据。通过这种方式，改善了显示设备和与信源设备之间的兼容性，并且可以最大程度地利用显示设备的显示分辨率。
为便于讨论，在下文中主要针对切换EDID信息中的分辨率来详细描述本公开的原理。然而，应注意，本公开的原理不限于仅仅应用到对显示设备的分辨率的切换，而是可以根据需要扩展到对EDID所包含的其它信息进行切换，例如对控制时序、色度空间、显示类型等其它信息进行切换。例如，以显示设备为4K电视为例，可以针对4K时序以及所支持的相应的HDMI带宽与频率，而在EDID中进行设置。
以下结合图2来具体说明根据本公开实施例的一种用于显示设备的控制方法。如图2所示，该控制方法包括：S210，根据获取的数据格式选择与该数据格式匹配的扩展显示标识数据EDID信息；以及S220,根据选择的EDID信息，控制显示设备以相应的数据格式进行显示。
可选地，根据本公开的实施例，所获取的数据格式包括与视频信号对应的分辨率。
可选地，根据本公开的实施例，该控制方法还包括：分析输入的视频信号的数据格式，并且根据分析的数据格式选择对应的EDID信息。作为示例，显示设备中的控制器310通过对通信接口330接收到的来自于信源设备20的信号进行分析，来确定与之匹配的EDID信息。通过这种方式，可以在无需用户干预的情况下，自动地选择显示设备与信源设备输入的视频信号相匹配的EDID设置。作为示例，信源设备可以通过显式或者隐式的方式向显示设备提供有关所输入的视频信号的数据格式的信息。
作为另一种方式，例如如图3所示，可以在显示设备的显示部件上向用户显示所存储的EDID信息，以供用户选择显示部件所要使用的相匹配的数据格式。作为示例，可以向用户显示视频输入的清晰度、最大水平图像大小、最大垂直图像大小、颜色特性、时序、显示传输特性等。可选地，用户可以根据需要对所显示的EDID信息进行修改，并且控制器310将修改后的EDID信息保存到存储器320中。
可选地，根据本公开的实施例，如图4所示，可以在显示设备的显示部件上向用户显示其所支持的分辨率格式，以供用户选择显示部件所要使用的分辨率格式。
可选地，根据本公开的一实施例，可以在输入的视频信号的分辨率高于显示设备所支持的分辨率时，将显示设备设置为以最高分辨率显示视频信号。具体而言，如果显示设备中的处理器310通过对接收的来自于信源设备20的信号进行分析后，确定输入的视频信号的分辨率高于显示设备的显示部件所支持的最高分辨率时，则以该最高分辨率显示来自于该信源设备的视频信号。
可选地，根据本公开的一实施例，可以在存储器320中未存储与输入的视频信号的分辨率相匹配的EDID信息时，换句话说，可以在控制器310未查到与输入的视频信号的分辨率相匹配的EDID信息时，将该显示部件设置为以与输入的视频信号的分辨率最接近的分辨率进行显示。在这种情况下， 可以使来自信源设备的视频信号的显示产生的失真最小，最大程度地保证与信源设备的兼容性。
以上描述了根据信源设备输出的视频信号或者用户输入的数据格式来选择或者改变显示设备存储的EDID信息，从而确保显示设备与信源设备的兼容性。作为另一种方式，可选地，可以通过通信接口330将用户选择的EDID信息提供给信源设备，使得信源设备根据EDID信息改变向显示设备输出的视频信号的数据格式。例如，如图4所示，在用户根据例如显示部件上显示的分辨率列表而选择相应的分辨率时，通过例如显示设备的通信接口将所选择的分辨率传输到信源设备，使得信源设备可以实时地调整向该显示设备输入的视频信号的分辨率格式，从而确保所输入的视频信号与用户所选择的分辨率相匹配，提高了与显示设备的兼容性。
图5示出了根据本公开示例性实施例的一种用于改变显示设备的EDID的方法的流程。如图5所示，S500,显示设备判断是否进行HDMI连接；S505，在判断进行了HDMI连接之后，确定是否需要进行EDID改变处理；S510，如果需要进行EDID改变处理，判断是否以手动方式执行EDID的设置；S515，在以手动方式执行EDID设置的情况下，在显示屏幕上显示当前可设置的EDID信息项，提示用户选择相应的信息项并进行设置，并将设置好的信息项写入存储器(可以是显示设备内部集成的存储器，也可以是其外部配备的存储器)；在判断不是以手动方式设置EDID信息时，需要以自动方式进行EDID设置，S520，分析信源设备输入给显示设备的视频信号的格式，并且与所存储的EDID信息项进行比对，选择与输入的视频信号的格式最匹配的EDID信息项，作为显示部件显示视频信号的EDID设置；或者，尽管未图示出，还可以将所选择的EDID信息项发送给信源设备，从而使得信源设备可以调整向显示设备发送的视频信号的数据格式，从而保证信源设备与显示设备的兼容性。
图6示出了根据本公开示例性实施例的一种用于显示设备的控制装置。如图6所示，该控制装置可以包括：选择器610，根据获取的数据格式选择与该数据格式匹配的EDID信息；读写器620，与选择器610连接，读取所选择的EDID信息，使得显示设备根据读取的EDID信息进行显示。
可选地，根据本公开的一实施例，该控制装置还可以包括存储器630，其中存储显示设备所支持的至少一项扩展显示标识数据EDID信息。可选地， 其中每一项EDID信息对应于一种视频信号数据格式，并且所支持的时序和带宽范围不同。
可选地，存储器630也可以作为独立的存储器件位于控制装置的外部，通过总线与控制装置通信。
可选地，根据本公开的一实施例，该控制装置还可以包括：数据分析器640，与选择器610相连接，对信源设备输入的视频信号进行数据格式的分析，并且将分析的结果发送给选择器。
可选地，该控制装置还可以包括:通信接口650，与信源设备和数据分析器相连接，接收信源设备输入的视频信号并且将其提供给数据分析器。
可选地，根据本公开的一实施例，数据格式可以包括与视频信号对应的分辨率。
可选地，根据本公开的一实施例，读写器620还可以与存储器630连接，根据用户指令读取存储器存储的EDID信息并且传输给显示设备。由此，可以向用户显示所存储的EDID信息，以供用户选择或者预置显示设备要使用的EDID信息。
可选地，根据本公开的一实施例，读写器620还与存储器630连接，根据用户对显示设备上显示的EDID信息的修改，将修改后的EDID信息写入存储器630中。由此，可以根据用户的设置，改变存储器中存储的EDID信息。
可选地，根据本公开的一实施例，其中，在数据分析器分析出所输入的视频信号的分辨率高于显示设备所支持的分辨率时，选择器选择存储器存储的最高分辨率供显示设备进行显示。
可选地，根据本公开的一实施例，其中，在存储器中未存储与输入的视频信号的分辨率相匹配的EDID信息时，选择器选择与该分辨率最接近的分辨率供显示设备进行显示。
可选地，根据本公开的一实施例，其中，在接收到用户选择的EDID信息时，读取器将选择的EDID信息通过通信接口提供给信源设备，使得信源设备根据EDID信息改变所输出的视频信号的数据格式。由此，可以使得信源设备根据所存储的EDID信息，相应地改变输出给显示设备的信号的数据格式，以便与显示设备相兼容。
可选地，根据本公开的实施例，控制装置中所包括的各个部件可以利用 专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者可编程逻辑器件(PLD)中的至少一个而完全通过硬件来实现；或者，也可以采用数字信号处理器(DSP)、微控制单元(MCU)、中央处理单元(CPU)等硬件结合存储器存储的程序指令来实现其功能。
图7A图示了根据本公开的实施例的一种显示设备的控制装置。与图6所描述的控制装置类似，该控制装置包括：选择器710，根据获取的数据格式选择所存储的与该数据格式匹配的EDID信息；以及控制器720，与选择器连接，根据选择的EDID信息，控制显示设备以相应的数据格式来显示视频信号。可选地，该控制装置还可以与外部存储器800连接，其中，存储器800存储显示设备支持的多项扩展显示标识数据EDID信息。
可选地，其中每一项EDID信息对应于一种视频信号数据格式，并且所支持的时序和带宽范围不同。
作为替换，存储器800也可以集成在该控制装置中，作为其内部存储器。
如图7A所示，该控制装置还包括：数据分析器730，其中数据分析器730与控制器720连接，对输入的视频信号的数据格式进行分析，并且将分析的结果发送给控制器；控制器720根据所分析的数据格式，控制选择器选择存储器中存储的与之匹配的EDID信息，供信源设备读取，并选择合适的分辨率供显示设备显示。
图7B图示了根据本公开的实施例的另一种显示设备的控制装置。与图7A所描述的控制装置类似，该控制装置包括：选择器750，根据获取的数据格式查找并选择存储器所存储的与该数据格式匹配的EDID信息；以及控制器760，与选择器连接，根据选择的EDID信息，控制显示设备以相应的数据格式进行显示。与图7A不同，该控制装置还包括图形用户接口(GUI)770。实际上，控制装置可以具有专用的用户界面或者可以通过通信接口利用所控制的显示设备作为用户界面而向用户显示所存储的EDID信息供用户选择，并且还可以根据用户的需求，对EDID信息进行预置或者调整。可选地，该控制装置还可以与外部存储器820连接，其中，存储器820存储显示设备支持的多项扩展显示标识数据EDID信息。可选地，其中每一项EDID信息对应于一种视频信号数据格式，并且所支持的时序和带宽范围不同。
作为替换，存储器820也可以集成在该控制装置中，作为其内部存储器。
可选地，控制器可以根据用户在用户界面上选择的数据格式，控制选择 器选择存储器中存储的与之匹配的EDID信息，供信源设备读取，并选择合适的分辨率供显示设备显示。
可选地，控制器可以根据用户输入的EDID信息而修改存储器中存储的EDID信息，从而根据需要及时调整用于显示设备的EDID设置。
根据本公开的一实施例，提供了一种显示设备，其包括上述的控制装置。
根据本公开的实施例，可以在预先存储多个EDID数据，分别对应于不同的视频信号的数据格式，并且根据信源设备输入的信号的数据格式或者根据用户输入的数据格式来选择与之相匹配的EDID数据供显示设备使用。通过这种方式，改善了显示设备和与信源设备之间的兼容性，并且可以最大程度地利用显示设备的显示分辨率。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开实施例公开的技术范围内，可轻易想到的变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应该以权利要求的保护范围为准。
本申请要求于2016年6月29日递交的中国专利申请第201610500242.6号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (18)

  1. 一种显示设备的控制方法，包括：
    根据获取的视频信号的数据格式，选择匹配的扩展显示标识数据EDID信息；以及
    根据选择的EDID信息，控制显示设备以相应的数据格式来显示视频信号。
  2. 根据权利要求1所述的控制方法，还包括：
    分析接入的视频信号，来获取视频信号的数据格式。
  3. 根据权利要求1或2所述的控制方法，还包括：
    向用户显示所存储的EDID信息，并根据用户的选择来获取显示设备显示视频信号所要使用的数据格式。
  4. 根据权利要求1-3任一项所述的控制方法，还包括：
    向用户显示用于设置EDID信息的界面，以供用户改变存储的EDID信息。
  5. 根据权利要求1-4任一项所述的控制方法，其中所述视频信号的数据格式包括与所述视频信号对应的分辨率。
  6. 根据权利要求5所述的控制方法，还包括：
    在输入的视频信号的分辨率高于显示设备所支持的分辨率时，控制显示设备以该显示设备所支持的最高分辨率显示视频信号。
  7. 根据权利要求5所述的控制方法，还包括：
    在未存储与输入的视频信号的分辨率相匹配的EDID信息时，控制显示设备以该显示设备所支持的与输入视频信号的分辨率最接近的分辨率进行显示。
  8. 根据权利要求1-7任一项所述的控制方法，还包括：
    根据选择的EDID信息，改变向显示设备输入的视频信号的数据格式。
  9. 一种显示设备的控制装置，包括：
    选择器，根据获取的视频信号的数据格式选择与该数据格式匹配的扩展显示标识数据EDID信息；以及
    读写器，与选择器连接，读取所选择的EDID信息，供显示设备根据读 取的EDID信息对视频信号进行显示。
  10. 根据权利要求9所述的控制装置，还包括：
    数据分析器，与选择器相连接，对输入的视频信号进行数据格式的分析，并且将分析的结果发送给选择器。
  11. 根据权利要求9或10所述的控制装置，还包括：
    存储器，存储显示设备所支持的至少一项EDID信息。
  12. 根据权利要求11所述的控制装置，其中，根据用户指令，读写器读取存储器存储的EDID信息，以根据用户选择来获取显示设备显示视频信号所要使用的数据格式。
  13. 根据权利要求11或12所述的控制装置，其中，读写器接收用户对EDID信息的修改，并将修改后的EDID信息写入存储器中。
  14. 根据权利要求9-13任一项所述的控制装置，其中，数据格式包括视频信号对应的分辨率。
  15. 根据权利要求14所述的控制装置，其中，在所输入的视频信号的分辨率高于显示设备所支持的分辨率时，选择器选择该显示设备所支持的最高分辨率供该显示设备进行显示。
  16. 根据权利要求14所述的控制装置，其中，在未存储与输入的视频信号的分辨率相匹配的EDID信息时，选择器选择该显示设备所支持的与输入的视频信号的分辨率最接近的分辨率供显示设备进行显示。
  17. 根据权利要求9-16任一项所述的控制装置，其中，在接收到选择的EDID信息时，读取器将选择的EDID信息提供给信源设备，使得信源设备根据EDID信息改变所输入的视频信号的数据格式。
  18. 一种显示设备，包括权利要求9-17任一项所述的控制装置。
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