CN203352718U

CN203352718U - VGA signal generator and signal distributor with EDID detective function

Info

Publication number: CN203352718U
Application number: CN 201320260731
Authority: CN
Inventors: 杨玉峰
Original assignee: FOSHAN HEADWAY TECHNOLOGY Co Ltd
Current assignee: FOSHAN HEADWAY TECHNOLOGY Co Ltd; Headway Technologies Inc
Priority date: 2013-05-14
Filing date: 2013-05-14
Publication date: 2013-12-18
Anticipated expiration: 2023-05-14

Abstract

The utility model discloses a VGA signal generator and signal distributor with an EDID detective function. The VGA signal generator and signal distributor comprises a central processing module (FGPA), a VGA signal input module, an EDID detection judgment module, an EDID detection result conversion image signal and superposition module and a VGA signal output module. An input terminal of the central processing module is respectively connected with the VGA signal input module, an output terminal of the EDID detection judgment module, and the EDID detection result conversion image signal and superposition module, and an output terminal of the central processing module is respectively connected with an input terminal of the EDID detection judgment module and the VGA signal output module. The VGA signal generator and signal distributor with the EDID detective function is advantaged by simple structure, and images under a VGA interface channel and the EDID function of a VGA interface can be simultaneously detected. Besides, signal output of a plurality of boards to be detested and the detection of EDID function can be simultaneously supported, and signal output and EDID detection of each interface can be independently completed without interferences.

Description

VGA signal generator and signal distributor with the EDID measuring ability

Technical field

The utility model relates to the checkout equipment technical field of VGA, especially relates to a kind of signal generator of the VGA with the EDID measuring ability and signal distributor.

Background technology

At present, in many electronic products, major part provides the input of VGA interface, such as television set etc., whether qualifiedly how to detect the VGA interface function, whether the VGA interface can use, and whether be mainly needs image and VGA interface EDID function under detection VGA interface channel normal.In prior art, to the detection of the image under the VGA interface channel and the detection of VGA interface EDID function is separately carried out, detection efficiency is low, therefore is necessary to be improved.

The utility model content

The deficiency existed for prior art, the purpose of this utility model is to provide a kind of signal generator of the VGA with the EDID measuring ability and signal distributor, it is simple in structure, can detect image and VGA interface EDID function under the VGA interface channel simultaneously, and detection efficiency is high.

To achieve these goals, the technical scheme that the utility model adopts is:

A kind of signal generator of the VGA with the EDID measuring ability and signal distributor, comprise that central processing module, VGA signal input module, EDID detect judge module, EDID testing result converted image signal and laminating module, VGA signal output module, the input of central processing module connects respectively output and EDID testing result converted image signal and the laminating module of VGA signal input module, EDID detection judge module, and the output of central processing module connects respectively input and the VGA signal output module that EDID detects judge module.

Further, in technical scheme, described VGA signal generator and signal distributor comprise a VGA signal generator module, and the input of central processing module connects the VGA signal generator module.

Further in technical scheme, described VGA signal output module is provided with some for connecting product to be detected and, to output of products one VGA signal to be detected and the EDID output interface of superposed signal as a result, each output interface is separate not to be interfere with each other.

After adopting said structure, the advantage that compared to the prior art the utility model had is: the utility model is simple in structure, can detect image and VGA interface EDID function under the VGA interface channel simultaneously, and detection efficiency is high.In addition, the utility model can be supported the signal output of polylith awaiting board card and the detection of EDID function simultaneously, and the separate non-interfering settling signal output of each interface and EDID detection.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the structural representation that VGA signal generator of the present utility model and signal distributor connect product to be detected.

Fig. 2 is the electrical block diagram of VGA signal generator of the present utility model and signal distributor.

Embodiment

The following stated is only preferred embodiment of the present utility model, does not therefore limit protection range of the present utility model.

Embodiment, see shown in Fig. 1 to Fig. 2: a kind of signal generator of the VGA with the EDID measuring ability and signal distributor, comprise central processing module (FPGA), the VGA signal input module, the VGA signal generator module, EDID detects judge module, EDID testing result converted image signal and laminating module, the VGA signal output module, the input of central processing module connects respectively the VGA signal input module, the VGA signal generator module, EDID detects output and EDID testing result converted image signal and the laminating module of judge module, the output of central processing module connects respectively input and the VGA signal output module that EDID detects judge module.

The VGA signal output module is provided with some for connecting product to be detected and, to output of products one VGA signal to be detected and the EDID output interface of superposed signal as a result, each output interface is separate not to be interfere with each other.

1, VGA signal generator of the present utility model and signal distributor can be given product B to be detected simultaneously, C, and D, E detects, and as shown in Figure 1, product to be detected provides the input of VGA picture signal by the VGA interface.

2, VGA signal generator of the present utility model and signal distributor are being given product B to be detected, C, D, in the time of E Product supply VGA signal, implement the detection of EDID simultaneously, it is to read product B to be detected by iic bus simultaneously, C, D, all EDID information byte data in the EDID data conservation zone of the EEPROM of E, can in VGA signal generator and signal distributor, carry out analysis and the judgement of 128 byte information after having read 128 byte EDID information, finally draw the EDID test result, this result can be superimposed upon with the form of image OSD and output to product B to be detected, C, D, in the VGA picture signal of E, the client can clearly see the EDID test result superposeed on the VGA image in test VGA interface image like this.

3, the difference of the upper VGA signal distributor of VGA signal generator of the present utility model and signal distributor and market is, VGA signal generator of the present utility model and signal distributor band EDID measuring ability, but also can self send the VGA signal, not merely that signal distributes.

4, the difference of VGA signal generator of the present utility model and signal distributor and VGA signal generator on the market also is, VGA signal generator of the present utility model and signal distributor band EDID measuring ability; But also the function of can compatible signal distributing has also completed the EDID detection in the signal distribution function.

The utility model reads the EDID total data by the most direct Floor layer Technology and carries out real-time analysis, and EDID test result PASS/NG character data is changed into to diagram form be merged together with the form of OSD window and the stack of current VGA picture signal, the client has been accomplished to very intuitively the detection of EDID function when detecting the VGA image, has improved greatly detection efficiency.

Workflow explanation of the present utility model:

1, VGA signal input module or the VGA signal generator module gives the VGA picture signal in real time.

2, central processing module triggers EDID and detects judge module, and product to be tested is read to the EDID register value by iic bus, turns back to the last testing result of central processing module.

3, central processing module triggers EDID testing result converted image signal and laminating module, the result that EDID in step 2 is detected is superimposed upon in the VGA picture signal of step 1 input than the mode with the OSD window with the form that becomes image, forms the VGA picture signal of band output EDID result.

4, central processing module is controlled the VGA signal output module and is outputed on product to be measured, now just can be very visual and clear when product test VGA image to be measured see VGA picture signal and EDID test result.

5, the principle that realizes of the signal distribution function of this product is, introduce the VGA signal from outside by the VGA signal input module, after coordinating each module and complete EDID and detect by central processing module, after by EDID testing result converted image signal and laminating module, the similar character conversion of EDID testing result PASS/NG being become to picture signal, be added to and introduce the VGA signal input module of VGA signal pattern from outside, then by the VGA signal output module, output to product to be measured.

Detection about EDID is prior art, can referenced patent application number be the Chinese utility model patent of " 201210299923.2 ", repeats no more here.

Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.

Claims

1. with VGA signal generator and the signal distributor of EDID measuring ability, it is characterized in that: comprise that central processing module, VGA signal input module, EDID detect judge module, EDID testing result converted image signal and laminating module, VGA signal output module, the input of central processing module connects respectively output and EDID testing result converted image signal and the laminating module of VGA signal input module, EDID detection judge module, and the output of central processing module connects respectively input and the VGA signal output module that EDID detects judge module.

2. the signal generator of the VGA with the EDID measuring ability according to claim 1 and signal distributor, it is characterized in that: described VGA signal generator and signal distributor comprise a VGA signal generator module, and the input of central processing module connects the VGA signal generator module.

3. the signal generator of the VGA with the EDID measuring ability according to claim 1 and signal distributor, it is characterized in that: described VGA signal output module arranges some being useful on and connects product to be detected and, to output of products one VGA signal to be detected and the EDID output interface of superposed signal as a result, each output interface is separate not to be interfere with each other.