CN202374347U - High-definition multimedia interface (HDMI) decoding device capable of dynamically configuring extended display identification data (EDID) - Google Patents
High-definition multimedia interface (HDMI) decoding device capable of dynamically configuring extended display identification data (EDID) Download PDFInfo
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- CN202374347U CN202374347U CN2011204941097U CN201120494109U CN202374347U CN 202374347 U CN202374347 U CN 202374347U CN 2011204941097 U CN2011204941097 U CN 2011204941097U CN 201120494109 U CN201120494109 U CN 201120494109U CN 202374347 U CN202374347 U CN 202374347U
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Abstract
The utility model discloses a high-definition multimedia interface (HDMI) decoding device capable of dynamically configuring extended display identification data (EDID), which comprises an HDMI input terminal, an HDMI decoder connected with the HDMI input terminal, a random access memory further connected with the HDMI input terminal, a microprocessor connected with the random access memory and a nonvolatile memory connected with the microprocessor. A plurality of EDID information can be prestored in the nonvolatile memory. Corresponding EDID information which can be called is transmitted to the random access memory by controlling the microprocessor without restarting a system when HDMI input occurs, so that the source end can output voice frequency video data according with corresponding forms and color information to achieve multi EDID dynamic switching of the HDMI in direct digital control (DDC) communication and ensure smooth playing.
Description
Technical field
The utility model relate to a kind of HDMI of having, DVI interface or with the field of video displaying of HDMI protocol-compliant, especially a kind ofly need not to restart system, but both can realize that EDID information dynamically switched, guarantees to play the HDMI decoding device of smooth dynamic-configuration EDID.
Background technology
In the display system that has HDMI or DVI, not only display end has different resolution, color depth etc. to show needs, simultaneously for the different video signals content, text, static state, dynamically or form differentiation such as movie theatre is arranged also.Therefore, in the agreement of HDMI, stipulate, can make source end output meet the audio, video data of corresponding form, color information through configuration EDID information.But, owing in the existing display terminal, only be equipped with an EDID mostly; Can't adjust the audio, video data exported to meet display requirement in good time,, but switch each other at every turn even indivedual projecting apparatus has been equipped with three EDID; Also essential restarting systems causes playing interruption, not smooth.
Summary of the invention
The utility model is in order to solve the above-mentioned technical problem of existing in prior technology, to provide a kind of and need not to restart system, but both can realize that EDID information dynamically switched, guarantees to play the HDMI decoding device of smooth dynamic-configuration EDID.
The technical solution of the utility model is: but the HDMI decoding device of a kind of dynamic-configuration EDID; The HDMI input terminal is arranged; Be connected to the HDMI decoder with the HDMI input terminal; It is characterized in that: also be connected to random asccess memory with said HDMI input terminal, random asccess memory and microprocessor join, and are connected to nonvolatile memory with microprocessor.
The utility model can be stored a plurality of EDID information in advance at nonvolatile memory; When HDMI imports; Need not restarting systems, can call corresponding EDID message transmission through control microprocessor and give random asccess memory, make end output in good time in source meet the audio, video data of corresponding form, color information; Many EDID in the DDC communication of realization HDMI dynamically switch, and guarantee to play smooth.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the utility model embodiment.
Embodiment
Below with the embodiment of accompanying drawings the utility model.As shown in Figure 1: but the HDMI decoding device of a kind of dynamic-configuration EDID; The HDMI input terminal is arranged; Be connected to the HDMI decoder with the HDMI input terminal; It is characterized in that: also be connected to random asccess memory with said HDMI input terminal, random asccess memory and microprocessor join, and are connected to nonvolatile memory with microprocessor.
The course of work:
At first, with required EDID information storage in nonvolatile memory.When the source end has the HDMI vision signal to import through the HDMI input terminal; Require form (resolution, color depth, text, static state, dynamically or movie theatre etc.) according to display end; Through artificial control microprocessor executive program, from nonvolatile memory, access corresponding EDID information to random asccess memory, through the DDC communication of HDMI; The audio and video data streams of notification source end output specified format is exported by the HDMI decoder decode.When HDMI audio frequency and video form need switch, control microprocessor was called corresponding EDID information in random asccess memory again, and through the DDC communication of HDMI, the audio and video data streams of the form that the output of notification source end is new is exported by the HDMI decoder decode again.Thereby the dynamic switching of the EDID information that realizes and need not restart system guarantees to play smooth.
Claims (1)
1. but the HDMI decoding device of a dynamic-configuration EDID; The HDMI input terminal is arranged; Be connected to the HDMI decoder with the HDMI input terminal; It is characterized in that: also be connected to random asccess memory with said HDMI input terminal, random asccess memory and microprocessor join, and are connected to nonvolatile memory with microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204941097U CN202374347U (en) | 2011-12-02 | 2011-12-02 | High-definition multimedia interface (HDMI) decoding device capable of dynamically configuring extended display identification data (EDID) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204941097U CN202374347U (en) | 2011-12-02 | 2011-12-02 | High-definition multimedia interface (HDMI) decoding device capable of dynamically configuring extended display identification data (EDID) |
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| CN202374347U true CN202374347U (en) | 2012-08-08 |
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| CN2011204941097U Expired - Fee Related CN202374347U (en) | 2011-12-02 | 2011-12-02 | High-definition multimedia interface (HDMI) decoding device capable of dynamically configuring extended display identification data (EDID) |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680460A (en) * | 2012-09-17 | 2014-03-26 | 台达电子工业股份有限公司 | Display control method and display device |
| CN105632452A (en) * | 2014-12-01 | 2016-06-01 | 冠捷投资有限公司 | Method for avoiding distortion of picture-in-picture or picture-by-picture in display |
| CN105828012A (en) * | 2016-03-31 | 2016-08-03 | 乐视控股（北京）有限公司 | HDMI automatic configuration method, and correlation apparatus |
| CN105892963A (en) * | 2015-11-26 | 2016-08-24 | 乐视致新电子科技（天津）有限公司 | Method for generating extended display identification data EDID and display device |
| CN106210588A (en) * | 2016-06-29 | 2016-12-07 | 乐视控股（北京）有限公司 | Interface allocation method and device |
| CN111163271A (en) * | 2019-12-13 | 2020-05-15 | 晶晨半导体（深圳）有限公司 | EDID version switching method for solving HDMI compatibility problem |
-
2011
- 2011-12-02 CN CN2011204941097U patent/CN202374347U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680460A (en) * | 2012-09-17 | 2014-03-26 | 台达电子工业股份有限公司 | Display control method and display device |
| CN103680460B (en) * | 2012-09-17 | 2016-03-23 | 台达电子工业股份有限公司 | Display control method and display device |
| CN105632452A (en) * | 2014-12-01 | 2016-06-01 | 冠捷投资有限公司 | Method for avoiding distortion of picture-in-picture or picture-by-picture in display |
| CN105892963A (en) * | 2015-11-26 | 2016-08-24 | 乐视致新电子科技（天津）有限公司 | Method for generating extended display identification data EDID and display device |
| CN105828012A (en) * | 2016-03-31 | 2016-08-03 | 乐视控股（北京）有限公司 | HDMI automatic configuration method, and correlation apparatus |
| CN106210588A (en) * | 2016-06-29 | 2016-12-07 | 乐视控股（北京）有限公司 | Interface allocation method and device |
| CN111163271A (en) * | 2019-12-13 | 2020-05-15 | 晶晨半导体（深圳）有限公司 | EDID version switching method for solving HDMI compatibility problem |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20141202 |
|
| EXPY | Termination of patent right or utility model |