CN215499315U - EDID simulator - Google Patents
EDID simulator Download PDFInfo
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- CN215499315U CN215499315U CN202121375246.9U CN202121375246U CN215499315U CN 215499315 U CN215499315 U CN 215499315U CN 202121375246 U CN202121375246 U CN 202121375246U CN 215499315 U CN215499315 U CN 215499315U
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Abstract
The utility model relates to an EDID simulator, which is provided with a signal source interface connected with a signal source and comprises a simulation and processing module, wherein the simulation and processing module is connected with the signal source by using the signal source interface; the simulation and processing module also comprises an EDID data sending module which sends the built-in display EDID signal in the memory from the signal source interface to the signal source. The utility model provides an EDID simulator which can acquire, store and transmit EDID of a display to signal source equipment when a user connects the display on the basis of simulating the display to the signal source equipment when the display is not connected, thereby ensuring that a video format output by a signal source can be completely matched with the performance of the display and perfectly playing the performance of the display.
Description
Technical Field
The utility model relates to the field of audio and video interfaces, in particular to an EDID simulator.
Background
EDID is known to appear to enable PCs or other image output devices to better identify display attributes. Extended Display Identification Data (Extended Display Identification Data) is a VESA standard Data format. The EDID information of VGA and DVI is composed of 128 bytes of main block, the EDID of HDMI adds an extension block (128 bytes), the content of the extension block is mainly related to the audio attribute, the DVI and VGA have no audio, the HDMI has audio, and the specification of the extension block data is defined according to the CEA-861x standard. Parameters relating to the display and its performance are contained, including vendor information, maximum image size, color settings, vendor presets, limits on frequency range, and strings of display names and serial numbers, among others.
The conventional EDID simulator mainly achieves the effect of simulating a display by transmitting EDID information transmitted in a chip of the simulator to a signal source device, but EDID information transmitted in the mode is often fixed, the video resolution, the frame rate and the like output by the signal source device are often fixed, when a user connects the display through the simulator, the video format frame rate output by the signal source may not be matched with the parameters of the display, the situation that the whole screen cannot be filled with pictures, the frame rate is low and the like is caused, and the performance of the display cannot be fully exerted.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the EDID simulator in the prior art, and provides the EDID simulator, which can obtain, store and transmit EDID of a display to signal source equipment when a user connects the display on the basis of simulating the display to the signal source equipment when the display is not connected, thereby ensuring that a video format output by a signal source can be completely matched with the performance of the display, and perfectly exerting the performance of the display.
The technical scheme adopted by the utility model for realizing the technical purpose is as follows: an EDID simulator is provided with a signal source interface connected with a signal source and comprises a simulation and processing module, wherein the simulation and processing module is connected with the signal source by using the signal source interface; the simulation and processing module also comprises an EDID data sending module which sends the built-in display EDID signal in the memory from the signal source interface to the signal source.
Further, in the above EDID simulator: the simulation and processing module also comprises an EDID data acquisition module which acquires EDID data from the display through the display interface and stores the EDID data into the memory.
Further, in the above EDID simulator: the simulation and processing module also comprises a video and audio signal transmission channel for transmitting the audio and video signals of the signal source interface to the display equipment.
Further, in the above EDID simulator: the signal source interface and the display interface adopt HDMI signal interfaces, and HDMI signal input and output modules are respectively arranged in the signal source interface and the display interface.
Further, in the above EDID simulator: and the bypass module is used for directly connecting the signal source interface and the display interface when the simulation and processing module detects that the display data channel formed by the signal source interface, the video and audio signal transmission channel and the display interface has SCDC, DDC/CI and HDCP signals.
The utility model provides an EDID simulator which can acquire, store and transmit EDID of a display to signal source equipment when a user connects the display on the basis of simulating the display to the signal source equipment when the display is not connected, thereby ensuring that a video format output by a signal source can be completely matched with the performance of the display and perfectly playing the performance of the display.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is a schematic diagram of a module structure according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
As shown in fig. 1 and fig. 2, the present embodiment provides an EDID emulator, which includes an HDMI signal input port 120, which is a signal source interface connected to a signal source such as a computer, an HDMI signal output port 130, which is a display interface connected to a display device such as a display, and an EDID emulation and processing module 110, in which the emulation and processing module 110 is a core component of the EDID emulator, and the emulation and processing module 110 has a DDC BYPASS and indicator lamps 111 and 112 therein. The HDMI signal input/output part (including the HDMI signal input port 120 and the HDMI signal output port 130) is mainly responsible for transmission of audio/video signals, the EDID simulation and processing module 110 is mainly responsible for simulation, storage and transmission of EDID, and the indicator light part is used for prompting a user of the current working state of the present invention. The present embodiment has two main functions, the first function is to simulate an EDID (Extended Display Identification Data) of a Display, and can also simulate a Display device to an audio/video signal source device under the condition that the Display is not connected, so that the audio/video signal source device outputs an audio/video signal through an HDMI interface, therefore, the simulation and processing module 110 includes a memory for storing the built-in EDID of the Display, and the simulation and processing module 110 further includes an EDID Data transmission module for transmitting the built-in EDID signal of the Display in the memory from the signal source interface to the signal source. The second function is to transmit the EDID information of the display to the signal source device and to store the EDID information when the display is externally connected. The two functions can make the signal source output end bind the display, so that the original display signal can be kept from being lost, the multi-window display sequence is not disordered, the screen is not disordered during KVM switch, and the computer can work normally as if the computer has a connected screen under the condition that the display is powered off, plugged or used by a KVM switch (a KVM switch). DDC BYPASS only processes EDID part on HDMI DDC, SCDC, DDC/CI and HDCP and other related data.
In this embodiment, an EDID emulator is provided with a signal source interface connected to a signal source and a display interface connected to a display, and a core component is an emulation and processing module, which is connected to the signal source via the signal source interface and to the display via the display interface; the simulation and processing module also comprises an EDID data sending module which sends the built-in display EDID signal in the memory to the signal source from the signal source interface, and the simulation display sends the EDID signal to the signal source such as a computer and the like when the display does not exist. The simulation and processing module also comprises an EDID data acquisition module which acquires EDID data from the display through the display interface and stores the EDID data into the memory. The simulation and processing module also comprises a video and audio signal transmission channel for transmitting the audio and video signals of the signal source interface to the display equipment. And the bypass module is used for directly connecting the signal source interface and the display interface when the simulation and processing module detects that the display data channel formed by the signal source interface, the video and audio signal transmission channel and the display interface has SCDC, DDC/CI and HDCP signals.
The EDID simulator of this embodiment can be to the basis of a display of signal source equipment simulation when not connecing the display, can acquire the EDID of display when the user connects the display again, preserve and transmit for signal source equipment, the video format of guaranteeing the signal source output can be completely with the performance phase-match of display, the perfect performance of display of having played, and accomplish that the data outage is not lost, plug-and-play, promote user experience, support DDC BYPASS function simultaneously, SCDC on detecting the DDC passageway, when DDC/CI and HDCP signal, do not do any and handle the integrality of having guaranteed the signal, only do corresponding processing to the EDID part, EDID separation processing has been realized, this is also one of the utility model discloses one of the biggest bright spot.
The EDID simulator of the embodiment does not need an external power supply and adopts a mode of supplying power by an HDMI signal wire. When the display is not connected, the EDID simulator is connected with the signal source equipment through an HDMI line, after the power is on, the EDID simulator can give an HPD signal to the signal source, after the signal source receives the signal, the signal source can read the EDID information of the rear end outwards, the EDID simulator can intercept the signal and send a built-in display EDID to the signal source, so that the signal source considers that the display is normally accessed, the EDID simulator of the embodiment is bound, and audio and video signals are sent. When the user connects the signal source and the display device through the EDID emulator of this embodiment, the EDID emulator of this embodiment will send the signal of obtaining EDID to the display device earlier, will store this data inside the chip after obtaining the EDID of display, when the EDID of signal source equipment will obtain the display, again read this EDID from the chip is inside and send signal source equipment to, and transmit audio video signal to the display device, the user pulls out the display device signal source at this moment and does not think there is display device's existence at all, continue to output audio video signal, accomplish not splash the screen, in disorder the screen.
As shown in fig. 1 and 2, the present embodiment is mainly composed of an input module (HDMI signal input port 120), an output module (HDMI signal output port 130), an EDID emulation and processing module 110, a DDC BYPASS module in the EDID address and processing module 110, and an indicator light. The input module mainly comprises an HDMI male connector, the output module mainly comprises an HDMI male connector, the EDID simulation and processing module 110 mainly comprises an MCU, and the indicator light part mainly comprises an indicator light D1 and an indicator light D2.
It should be understood that the above-described embodiments are merely preferred examples of the present invention and the technical principles applied thereto, and any changes, modifications, substitutions, combinations and simplifications made by those skilled in the art without departing from the spirit and principle of the present invention shall be covered by the protection scope of the present invention.
Claims (5)
1. An EDID simulator is provided with a signal source interface connected with a signal source and comprises a simulation and processing module, wherein the simulation and processing module is connected with the signal source by using the signal source interface; the method is characterized in that: the simulation and processing module also comprises an EDID data sending module which sends the built-in display EDID signal in the memory from the signal source interface to the signal source.
2. The EDID emulator of claim 1, wherein: the simulation and processing module also comprises an EDID data acquisition module which acquires EDID data from the display through the display interface and stores the EDID data into the memory.
3. The EDID emulator of claim 2, wherein: the simulation and processing module also comprises a video and audio signal transmission channel for transmitting the audio and video signals of the signal source interface to the display equipment.
4. The EDID emulator of claim 3, wherein: the signal source interface and the display interface adopt HDMI signal interfaces, and HDMI signal input and output modules are respectively arranged in the signal source interface and the display interface.
5. The EDID emulator of claim 4, wherein: and the bypass module is used for directly connecting the signal source interface and the display interface when the simulation and processing module detects that the display data channel formed by the signal source interface, the video and audio signal transmission channel and the display interface has SCDC, DDC/CI and HDCP signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121375246.9U CN215499315U (en) | 2021-06-21 | 2021-06-21 | EDID simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121375246.9U CN215499315U (en) | 2021-06-21 | 2021-06-21 | EDID simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215499315U true CN215499315U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121375246.9U Active CN215499315U (en) | 2021-06-21 | 2021-06-21 | EDID simulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215499315U (en) |
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2021
- 2021-06-21 CN CN202121375246.9U patent/CN215499315U/en active Active
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