CN202058137U - DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data read memorizer - Google Patents
DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data read memorizer Download PDFInfo
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- CN202058137U CN202058137U CN2011200249463U CN201120024946U CN202058137U CN 202058137 U CN202058137 U CN 202058137U CN 2011200249463 U CN2011200249463 U CN 2011200249463U CN 201120024946 U CN201120024946 U CN 201120024946U CN 202058137 U CN202058137 U CN 202058137U
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Abstract
The utility model discloses a DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data read memorizer, comprising a display signal source interface, an EEPROM (Electrically Erasable Programmable Read-Only Memory) memorizer, a self-end display device interface, a self-end communication module, a self-end read and storage device CPU(Central Processing Unit), an annular protruding button, a self-end read button, a far-end read button, a far-end communication module, a far-end read device CPU (Central Processing Unit) and a far-end display device interface. The DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data read memorizer can be used to read and storage the DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data of the self-end display device and also can be used to read and storage the DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data of the far-end display device. The read and storage the DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data of various kinds of display device interfaces (VGA, DVI, HDMI) can be compatible for the DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data read memorizer, and help for remote display of the display signal source and the display device is capable of being provided, design of the remote displaying system is greatly facilitated.
Description
Technical field
The utility model relates to display device and signal source equipment communication technique field, specifically relates to a kind of DDC/EDID data read storer that can read, store in the display device.
Background technology
The DC/EDID exchanges data is a kind of standardized method of display device and signal source equipment communication explanation self performance.This communication is for the performance characteristic (such as original resolution) that makes display device can send self arrives signal source equipment, makes this equipment generate the video properties that is suitable for the display device requirement.The user does not need manual adjustments, the compatibility between the lifting means to greatest extent just, thus reduced because incorrect setting and adjust the influence that global reliability caused display image and system.In general, signal source equipment may be the video card of a table face computing machine or notebook computer, but now many again many different equipment, comprise HDTV receiver and digital VTR, DVD and Blu-ray player, even also having game machine, this just need read the DDC/EDID data and export corresponding video.EDID develops for the VGA interface on the computer simulation video equipment at first, can be used in DVI, HDMI and DisplayPort now.At present, development along with signal apparatus in multimedia application, the apparent control engineering, flat panel display equipment, projector use more and more widely, the application placed apart of signal source and display device also gets more and more, this moment, display source signal just can't directly read the DDC/EDID data of display device, make this equipment can not generate the video properties that is suitable for the display device requirement, cause display device normally not show.
Summary of the invention
The purpose of this utility model is far away at display source signal and display device distance, can't directly read display device DDC/EDID data, cause display device normally not show, a kind of DDC/EDID data read storer is provided, can simply read, store display device DDC/EDID data fast, can make display source signal in local terminal reading displayed equipment DDC/EDID data, can make things convenient for the shows signal source remote distance to read the DDC/EDID data again.
The utility model is to be achieved through the following technical solutions:
A kind of DDC/EDID data read storer comprises shows signal source interface and eeprom memory, and wherein the local terminal storage data-out port that reads memory device CPU passes through I
2C bus and eeprom memory the storage data-in port be connected, the storage data-out port of eeprom memory is connected with the shows signal source interface, it is characterized in that: comprise also that local terminal display device interfaces, local terminal communication module, local terminal read memory device CPU, encircle out button, local terminal reads button, far-end reads button, far-end communication module, far-end fetch equipment CPU and distal displayed equipment interface, described local terminal display device interfaces is passed through I
2The C bus is connected with the local terminal display device port that local terminal reads memory device, and the local terminal display device interfaces also is connected with the shows signal source interface by encircling out button; Described local terminal reads the output port that button and far-end read button and is connected with the button input port that local terminal reads memory device CPU; Described local terminal reads memory device CPU by local terminal communication module and far-end communication module and two-way connection of far-end fetch equipment CPU; Described distal displayed equipment interface passes through I
2The C bus is connected with the distal displayed device port of far-end fetch equipment CPU.
And, also comprise clock circuit and signal indicating circuit, wherein clock circuit is connected with the input end of clock mouth that local terminal reads memory device CPU, and signal indicating circuit is connected with the signal indication output end mouth that local terminal reads memory device CPU.
The utility model solves the beneficial effect that is produced after its technical matters:
The DDC/EDID data read storer that the utility model is realized, the DDC/EDID data that the energy compatibility read, stored various display device interfaces (VGA, DVI, HDMI), can make display source signal in local terminal reading displayed equipment DDC/EDID data, can make things convenient for the shows signal source remote distance to read the DDC/EDID data again, can for display source signal and display device remote demonstration assistance is provided, greatly facilitate the design of remote display system.
Description of drawings
Fig. 1 is the system chart of DDC/EDID data read storer of the present utility model.
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further the utility model is elaborated.
DDC/EDID data read storer of the present utility model as shown in Figure 1, comprise that shows signal source interface (can select DB15 interface or the DVI-D or the HDMI type A interface of standard for use), local terminal read the ATMEGA8 processor chips that memory device CPU(can select ATMEl company for use) and eeprom memory (can select the ATMLH930 memory chip of ATMEl company for use), wherein the local terminal storage data-out port that reads memory device CPU passes through I
2C bus and eeprom memory the storage data-in port be connected, the storage data-out port of eeprom memory is connected with the shows signal source interface, also comprise local terminal display device interfaces (interface of selecting for use with the shows signal source interface is identical), local terminal communication module (can select the RS-232 communication module for use), encircle out button, local terminal reads button, far-end reads button, far-end communication module (can select the RS-232 communication module for use), far-end fetch equipment CPU(can select the ATMEGA8 processor chips of ATMEl company for use) and distal displayed equipment interface (interface of selecting for use with the shows signal source interface is identical), described local terminal display device interfaces is passed through I
2The C bus is connected with the local terminal display device port that local terminal reads memory device CPU, and the local terminal display device interfaces also is connected with the shows signal source interface by encircling out button; Described local terminal reads the output port that button and far-end read button and is connected with the button input port that local terminal reads memory device CPU; Described local terminal reads memory device CPU by local terminal communication module and far-end communication module and two-way connection of far-end fetch equipment CPU, and described distal displayed equipment interface passes through I
2The C bus is connected with the distal displayed device port of far-end fetch equipment CPU.In addition, the utility model comprises that also clock circuit (can select the 8Mhz crystal oscillator for use as the clock source) is used for reading memory device CPU to local terminal operation clock, signal indicating circuit (can select diode L-314 for use as pilot lamp) are provided, wherein clock circuit is connected with the input end of clock mouth that local terminal reads memory device CPU, and signal indicating circuit is connected with the signal indication output end mouth that local terminal reads memory device CPU.
The course of work of the present utility model is: local terminal reading displayed equipment interface (VGA, DVI or HDMI) is connected with the external display device display interface, like this I of external display device
2The C bus just with I of the present utility model
2The C bus connects together, and when pressing local terminal and read button, local terminal reads memory device CPU and utilizes the local fetch program, by the I of local terminal display device interfaces
2The C bus is read in local terminal with the DDC/EDID data of external display device and is read memory device CPU, and the log-on data access program writes these data in the eeprom memory then, reads in order to the follow-up signal source that is shown.When pressing far-end and read button, local terminal reads memory device CPU and starts signal procedure, and CPU communicates with the far-end fetch equipment, and far-end fetch equipment CPU utilizes the far-end fetch program, by the I of distal displayed equipment interface
2The C bus is read in far-end fetch equipment CPU with the DDC/EDID data of external display device, and utilizes signal procedure that data are returned to local terminal and read memory device CPU, and local terminal reads memory device CPU these data are saved in the eeprom memory.Press if encircle out button, the DDC/EDID data of the direct reading displayed equipment interface of display source signal are not pressed if encircle out button, and the DDC/EDID data of then storing in the eeprom memory are finished startup work, and display device is normally shown.
Above content description ultimate principle of the present utility model, principal character and advantage.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is by appending claims and equivalent circle thereof.
Claims (2)
1. a DDC/EDID data read storer comprises shows signal source interface and eeprom memory, and wherein the local terminal storage data-out port that reads memory device CPU passes through I
2The C bus is connected with the storage data-in port of eeprom memory, the storage data-out port of eeprom memory is connected with the shows signal source interface, it is characterized in that: comprise also that local terminal display device interfaces, local terminal communication module, local terminal read memory device CPU, encircle out button, local terminal reads button, far-end reads button, far-end communication module, far-end fetch equipment CPU and distal displayed equipment interface, described local terminal display device interfaces is passed through I
2The C bus is connected with the local terminal display device port that local terminal reads memory device CPU, and the local terminal display device interfaces also is connected with the shows signal source interface by encircling out button; Described local terminal reads the output port that button and far-end read button and is connected with the button input port that local terminal reads memory device CPU; Described local terminal reads memory device CPU by local terminal communication module and far-end communication module and two-way connection of far-end fetch equipment CPU; Described distal displayed equipment interface passes through I
2The C bus is connected with the distal displayed device port of far-end fetch equipment CPU.
2. DDC/EDID data read storer according to claim 1, it is characterized in that: also comprise clock circuit and signal indicating circuit, wherein clock circuit is connected with the input end of clock mouth that local terminal reads memory device CPU, and signal indicating circuit is connected with the signal indication output end mouth that local terminal reads memory device CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200249463U CN202058137U (en) | 2011-01-26 | 2011-01-26 | DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data read memorizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200249463U CN202058137U (en) | 2011-01-26 | 2011-01-26 | DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data read memorizer |
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| Publication Number | Publication Date |
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| CN202058137U true CN202058137U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200249463U Expired - Lifetime CN202058137U (en) | 2011-01-26 | 2011-01-26 | DDC (Direct Digital Control) /EDID (Extended Display Identification Data) data read memorizer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103200382A (en) * | 2012-01-09 | 2013-07-10 | 上海华虹集成电路有限责任公司 | Interactive communication method of high definition multi-media interface (HDMI) transmitting terminal and receiving terminal |
| CN105227888A (en) * | 2015-09-25 | 2016-01-06 | 山东超越数控电子有限公司 | A kind of dispensing device of VGA vision signal, receiving system and transmission system |
| WO2017054655A1 (en) * | 2015-09-29 | 2017-04-06 | 深圳市九洲电器有限公司 | Hdmi interface test fixture and test method |
| CN110737419A (en) * | 2019-10-24 | 2020-01-31 | 深圳市杰和科技发展有限公司 | External display device identification data reading system and method |
| CN111048050A (en) * | 2019-11-19 | 2020-04-21 | 南京众核电子科技有限公司 | Communication compatibility method, device and system |
-
2011
- 2011-01-26 CN CN2011200249463U patent/CN202058137U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103200382A (en) * | 2012-01-09 | 2013-07-10 | 上海华虹集成电路有限责任公司 | Interactive communication method of high definition multi-media interface (HDMI) transmitting terminal and receiving terminal |
| CN103200382B (en) * | 2012-01-09 | 2017-10-31 | 上海华虹集成电路有限责任公司 | The transmitting terminal of HDMI and the interactive communication method of receiving terminal |
| CN105227888A (en) * | 2015-09-25 | 2016-01-06 | 山东超越数控电子有限公司 | A kind of dispensing device of VGA vision signal, receiving system and transmission system |
| WO2017054655A1 (en) * | 2015-09-29 | 2017-04-06 | 深圳市九洲电器有限公司 | Hdmi interface test fixture and test method |
| CN110737419A (en) * | 2019-10-24 | 2020-01-31 | 深圳市杰和科技发展有限公司 | External display device identification data reading system and method |
| CN111048050A (en) * | 2019-11-19 | 2020-04-21 | 南京众核电子科技有限公司 | Communication compatibility method, device and system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111130 |