CN206251273U - A kind of MHL to HDMI patchcords detector - Google Patents

Abstract

The utility model discloses a kind of MHL to HDMI patchcords detector, it includes main control module, MHL interface and HDMI, are connected with RGB and turn MHL modules between the MHL interface and main control module, being connected with HDMI between the HDMI and main control module turns RGB block；The MHL interface and RGB turn to be connected between MHL modules, and the HDMI and HDMI turn to be respectively connected with ESD protection modules between RGB block；The main control module also includes the state instruction lamp module being connected with the FPGA.MHL to the HDMI patchcord detectors that the utility model is provided, it is compared using the RGB data that FPGA will be received with original RGB data, and the bit error rate is calculated, so as to the transmission performance of MHL to HDMI patchcords can rapidly and accurately be judged, and can easily provide test report.

Description

A kind of MHL to HDMI patchcords detector

Technical field

The utility model is related to a kind of MHL to HDMI patchcords detector.

Background technology

At present, Mobile High-Definition Link (MHL) mobile terminal high-definition audio and video standard interface, is one The audio-visual standard interface of connection portable consumer electronic device is planted, MHL is input into using only a bars cable by standard HDMI Interface can be presented on HDTV.MHL is by SONY, NOKIA, Explore, Silicon Image, Toshiba, three One novel portable product video transmission agreement of magnitude company joint proposal.It is different from 19 pipes of traditional HDMI Pin, MHL only has 5 pins, wherein 2 pins are specifically used to transmit audio and video frequency signal, in addition 2 be power supply and Ground, also 1 pin is specifically used to be controlled.It is equal to TMDS and DDC, CEC to combine and is controlled, It is a controlling bus, has this controlling bus just all of Voice ＆ Video can be carried out comprehensive control, it makes The storage of data and the transmission of data become to be more prone to, here it is the benefit of MHL new interfaces.

Method currently used for detection MHL to HDMI patchcord transmission performances is during sampling Detection, to be entered with Network Analyzer Row analysis, mainly with the ready-made equipment with MHL interface during batch production detection, carries out signal transmission, then aobvious with display Diagram picture, manually visually goes whether the image for seeing transmission has Snow Mark point, and whether listening is normal.This detection mode can not determine Amount detection, it is also not accurate enough, and also speed is slow, can't provide test report.

Utility model content

To overcome the problem of the deficiencies in the prior art and presence, the utility model provides a kind of MHL to HDMI patchcords inspection Instrument is surveyed, the detector can be quick and convenient, and detect the transmission performance of MHL to HDMI patchcords exactly, while can also be easily Test report is provided.

The utility model is achieved through the following technical solutions：A kind of MHL to HDMI patchcords detector, it includes master Control module, MHL interface and HDMI, are connected with RGB and turn MHL modules between the MHL interface and main control module, described HDMI is connected between HDMI and main control module and turns RGB block.

Further, the MHL interface and RGB turn to be connected with ESD protection modules, the HDMI between MHL modules Turn to be connected with ESD protection modules between RGB block with HDMI；The main control module also includes that the state being connected with the FPGA refers to Show lamp module.

Preferably, the main control module includes FPGA, power module, serial port module and touch screen, the power module And serial port module is connected with the FPGA, the touch screen is connected by the serial port module with FPGA；The touch screen is LCD touch screens.

It is preferred that the serial port module include for develop debugging first serial, for communicated with host computer second Serial ports, and the 3rd serial ports for being connected with the FPGA for the touch screen；The state instruction lamp module includes operation Indicator lamp, test carry out indicator lamp, test passes indicator lamp and test failure indicator lamp.

MHL to the HDMI patchcord detectors that the utility model is provided, its RGB data and original for will being received using FPGA The RGB data of beginning is compared, and calculates the bit error rate, so as to the biography of MHL to HDMI patchcords can rapidly and accurately be judged Defeated performance, and test report can be easily provided.

Brief description of the drawings

Fig. 1 is the circuit structure schematic block diagram of MHL to HDMI patchcords detector described in the utility model embodiment.

Fig. 2 is the circuit structure schematic block diagram of main control module described in the utility model embodiment.

Specific embodiment

For the ease of the understanding of those skilled in the art, below in conjunction with the drawings and specific embodiments the utility model is made into One step is described in detail.

As shown in Figure 1, a kind of MHL to HDMI patchcords detector, it includes main control module, MHL interface and HDMI Interface, is connected with RGB and turns MHL modules between the MHL interface and main control module, connect between the HDMI and main control module It is connected to HDMI and turns RGB block.Wherein, the main control module is mainly used in the control of whole detector, test data（Parallel RGB data）Generation, transmission, reception etc.；RGB turns MHL modules for the digital RGB signal that main control module is produced to be converted to MHL data are simultaneously exported；The HDMI turns RGB block for HDMI data being converted into parallel digital RGB signal and being exported；Institute Stating main control module will turn HDMI data and original RGB data that RGB block is received from HDMI（Produced by main control module itself It is raw）It is compared, by calculating the bit error rate, so as to the transmission performance of MHL to HDMI patchcords can rapidly and accurately be judged. Turn MHL modules and HDMI by setting the RGB and turn RGB block, can automatically produce the data flow for meeting MHL agreements, from without Needing the main control module carries out protocol processes, can effectively simplify design.It should be noted that being turned using MHL to the HDMI Wiring detector detects to patchcord, is not related to the improvement to existing host-host protocol or computer program.

Used as preferred embodiment, the MHL interface and RGB turn to be connected with ESD protection modules between MHL modules, described HDMI and HDMI turn to be connected with ESD protection modules between RGB block.Using the ESD protection modules, can effectively prevent The internal circuit of MHL to HDMI patchcords detector described in electrostatic damage in data wire test process.

Wherein in a preferred embodiment, the main control module includes FPGA, power module, serial port module and touches Control screen, the power module and serial port module are connected with the FPGA, and the touch screen is by the serial port module and FPGA Connection, as shown in Figure 2.In the present embodiment, the touch screen is LCD touch screens, and the LCD touch screens are preferably using 7 cun of string Mouth touch-screen SDWe070C06T, it has the resolution ratio of 480*640, can meet good man machine operation interface and test function The demand of display.Described serial port module includes three serial ports：First serial for developing debugging, for logical with host computer The second serial of letter, and the 3rd serial ports for being connected with the FPGA for the touch screen.Using described second serial, Easily test data and test report etc. can be transmitted to the external equipment of detector, such as printing device, be set using printing It is standby easily to print test report, or be available for the computer of other users easy-to-read etc..

Used as preferred embodiment, the main control module also includes the state instruction lamp module being connected with the FPGA；This In embodiment, the state instruction lamp module includes four indicator lamps：Run indicator, test carry out indicator lamp, test and close Lattice indicator lamp and test failure indicator lamp.Wherein, each indicator lamp is preferably LED.

Wherein in a preferred embodiment, the chip model of the FPGA is preferably the Spartan6 of Xilinx companies Series XC6SLX150T-2FGG900C, this chip be particularly suitable for the logical design of high power capacity, user oriented DSP design, Low-cost design；Main control chip model in the ESD protection modules is preferably SP3012-04UTG；The RGB turns MHL modules In main control chip model SiI9226, the HDMI turn the main control chip model EP9553E in RGB block.In addition, institute Stating power module can provide energy source and power for whole detector, the power with 40W, exportable 5V, 3.3V, 1.8V and The multiple voltages such as 1.2V, can meet the demand of each functional module of detector.

MHL to the HDMI patchcord detectors provided using the present embodiment, when MHL to HDMI patchcords detection is carried out, To be connected with the MHL interface for receiving the port of input data, the port for output data is connected with HDMI, can Corresponding operation is carried out in the LCD touch screens and start test, first with the original video measurement data that PFGA is produced（Should Video measurement data are the data of rgb format）, and MHL modules are turned by RGB be converted to the data flow for meeting MHL agreements, then lead to Cross ESD protection modules and by MHL data stream transmittings to MHL interface, then reaching by MHL to the HDMI patchcords that are tested HDMI, wherein, it is provided with MHL data conversions into HDMI data in MHL to the HDMI patchcords, then protected by ESD Shield module transfer turns RGB block to the HDMI, and the number that HDMI stream compressions are changed into RGB block rgb format is turned by the HDMI According to and transmit into FPGA, the RGB data that will finally be received by FPGA is compared with original RGB data, and calculates The bit error rate, so as to can determine whether out the transmission performance of MHL to HDMI patchcords.After test terminates, test result can be referred to by state Show and show the testing results such as test passes or test failure in lamp module, it is also possible to checked in the LCD touch screens and more show The testing result shown, testing result can also be sent to printing device print testing result by the second serial, or Send to computer etc. and checked and preserved.MHL to the HDMI patchcord detectors provided using the present embodiment, can be quickly square Just the transmission performance of MHL to HDMI patchcords is detected and exactly, but also test report can be easily provided as needed.

Above-described embodiment is preferably implementation of the present utility model, is not to restriction of the present utility model, not On the premise of departing from inventive concept of the present utility model, it is any it is obvious replacement protection domain of the present utility model it It is interior.

Claims (10)

1. a kind of MHL to HDMI patchcords detector, it is characterised in that：Including main control module, MHL interface and HDMI, RGB is connected between the MHL interface and main control module and turns MHL modules, be connected between the HDMI and main control module HDMI turns RGB block.

2. MHL to HDMI patchcords detector according to claim 1, it is characterised in that：The MHL interface turns with RGB ESD protection modules are connected between MHL modules, the HDMI and HDMI turn to be connected with ESD protection moulds between RGB block Block.

3. MHL to HDMI patchcords detector according to claim 2, it is characterised in that：The main control module includes FPGA, power module, serial port module and touch screen, the power module and serial port module are connected with the FPGA, described Touch screen is connected by the serial port module with FPGA.

4. MHL to HDMI patchcords detector according to claim 3, it is characterised in that：The serial port module includes using In exploitation debugging first serial, for the second serial communicated with host computer, and for for the touch screen with it is described 3rd serial ports of FPGA connections.

5. MHL to HDMI patchcords detector according to claim 4, it is characterised in that：The main control module also includes The state instruction lamp module being connected with the FPGA.

6. MHL to HDMI patchcords detector according to claim 5, it is characterised in that：The state instruction lamp module Indicator lamp, test passes indicator lamp and test failure indicator lamp are carried out including run indicator, test.

7. MHL to HDMI patchcords detector according to claim 2, it is characterised in that：In the ESD protection modules Main control chip model SP3012-04UTG.

8. MHL to HDMI patchcords detector according to claim 3, it is characterised in that：The chip signal of the FPGA It is XC6SLX150T-2FGG900C.

9. MHL to HDMI patchcords detector according to claim 3, it is characterised in that：The touch screen is LCD touch-controls Screen.

10. MHL to HDMI patchcord detectors according to any one in claim 1~9, it is characterised in that：It is described Main control chip the model SiI9226, the HDMI that RGB turns in MHL modules turn the main control chip model in RGB block ADV7619。