CN202309992U

CN202309992U - Automatic television board testing system

Info

Publication number: CN202309992U
Application number: CN2011202732218U
Authority: CN
Inventors: 周开琪
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd
Priority date: 2011-07-29
Filing date: 2011-07-29
Publication date: 2012-07-04
Anticipated expiration: 2021-07-29

Abstract

The utility model discloses an automatic television board testing system. The automatic television board testing system consists of a test bench, a signal conversion and control module, a control computer and a signal generator which are sequentially connected, wherein the output end of the signal generator is connected with the input end of the test bench. Through the conventional television scheme with a network function and an HDMI (high-definition multimedia interface) function and in combination with a signal conversion and control system consisting of an MCU (Microprogrammed Control Unit), test data is transmitted to the control computer and compared and tested in a way of network transmission, so that am image acquisition card is not used and the test cost is saved; the technical scheme of the utility model supports multi-way HDMI input and can support the simultaneous test of multiple platforms, and other system platforms are not required, so that the system testing difficulty and the system cost are reduced.

Description

TV integrated circuit board Auto-Test System

Technical field

The utility model relates to the tv test field, relates in particular to a kind of TV integrated circuit board Auto-Test System.

Background technology

Along with the scale development of LCD TV, divide the work more and more carefullyyer, a large amount of drive scheme Chevron Research Company (CRC)s, power supply Chevron Research Company (CRC) etc. appear on the market; And very complicated for the test of drive scheme integrated circuit board in batches, because the function of input port is very many, for example: AV, SVIDEO, YPbPr, HDMI, DVD, USB, ATV, DTV, DVI etc.; Also has corresponding audio input interface; Problems such as test leakage, mistake survey appear in the main at present method that relies on the manual testing, and complicated operation easily; There is very large influence in the product turnout quality, and the developing direction of automation must replace existing manual mode of operation.

Application number is the method for testing through capture card of having told about in 201010275525.8 patents, and this method mainly adopts the mode that the LVDS signal is gathered, and the technology of capture card is main to be grasped abroad; With NI (American National instrument company) is the main flow representative, and cost is very high, and needs full-time LabVIEW (pattern development environment) engineer; Because adopt the PCI-E data-interface; When needing same test station to test a plurality of platform simultaneously, each platform all needs a capture card, and is just very high to the requirement of PC; And the drive plate of a kind of new departure of every replacing; Just need be to the driving debugging of making amendment, maintenance cost is very high and the cycle is long, is unfavorable for the thread-changing configuration of factory.

And the highest display resolution of supporting 1920*1080/60Hz of existing scheme, for novel 120Hz display screen, the drive plate of 3D screen can't be accomplished test.

The utility model content

The utility model purpose provides a kind of TV integrated circuit board Auto-Test System; TV scheme through existing band Network Transmission and HDMI function; Novel signal conversion and control module that combined function is integrated; The mode of utilizing Network Transmission is given to computer to the test data transmission and compares test, saves the use image pick-up card, has practiced thrift testing cost.

The utility model also provides a kind of TV integrated circuit board Auto-Test System, comprises that testboard, conversion of signals and controller module, control computer, signal generator connect successively, and the signal generator output connects the testboard input;

Be placed with tested television circuit plate on the said testboard; The control computer transmits control command and gives said signal generator; The control command of transmit operation is simultaneously given said conversion of signals and controller module; Signal generator receives control command; Produce corresponding test signal and give tested television circuit plate; Tested television circuit plate is used for converting picture decoding to and drives the pairing LVDS signal of screen, and sends to said conversion of signals and controller module to this LVDS signal, and said conversion of signals and control module become HDMI or DVI signal with the LVDS conversion of signals; Whether the voltage test points output voltage, picture signal and the audio signal that detect tested television circuit plate simultaneously be in the scope that sets, and detection data, picture signal and audio signal through each voltage test points of network data bundle of lines send to the control computer and compare test.

Further; Said conversion of signals and control module are decoded into picture signal once more to HDMI or DVI signal; And convert image signal data to network signal and send through the network data line and be given to the control computer, the audio signal of exporting tested integrated circuit board is simultaneously switched and is transmitted to the control computer.

Further, said control computer also is connected with database hub, stores the test result of each tested television circuit plate.

Further; After testing the index project of setting; Said control computer can generate the test result of record the test report of a complete television reception performance index automatically according to set form; And compare with the index performance of standard, make sign to incongruent project automatically and distinguish.

The TV integrated circuit board Auto-Test System of the utility model; TV integrated circuit board through existing band Network Transmission and HDMI interface function; Novel signal conversion and control module that combined function is integrated; The mode of utilizing Network Transmission is given to computer to the test data transmission and compares test, saves the use image pick-up card, has practiced thrift testing cost.

Said conversion of signals and control module integrated level are high; Powerful, store the driver of the TV integrated circuit board of whole models, can be the LVDS conversion of signals of TV liquid crystal drive plate DVI signal or HDMI signal; And then pass to DVI signal or HDMI signal to decode on the common LCD TV drive plate of band network function and go back original image; Be transferred to computer to image through network then and carry out the test result that image comparison obtains image section, the present invention program supports multichannel HDMI input, can support a plurality of platforms to test simultaneously; Other system platform be need not increase, system testing difficulty and system cost reduced.

Whole test process only need be carried out the selection of some test events in early stage, the back system can automatically controling of storage be instructed send, and accomplishes whole testing process automatically, provides examining report.

Description of drawings

Fig. 1 is the TV integrated circuit board Auto-Test System block diagram that the utility model embodiment provides.

Fig. 2 is the structural representation of conversion of signals and control module among the utility model embodiment.

Embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done to describe in detail further below.

A kind of TV integrated circuit board Auto-Test System as shown in Figure 1, that the utility model embodiment provides comprises that testboard, conversion of signals and controller module, control computer, signal generator connect successively, and the signal generator output connects the testboard input;

Said conversion of signals and control module are connected with the control computer through the network data line; Said HDMI or DVI signal decoded once more convert picture signal to; And convert picture signal to network signal and send and to be given to the control computer, the audio signal of exporting tested television circuit plate is simultaneously switched and is transmitted to the control computer.

After testing the index project of setting; Said control computer can generate the test result of record the test report of a complete television reception performance index automatically according to set form; And compare with the index performance of standard, make sign to incongruent project automatically and distinguish.

Specific operation process is following:

1, after each modular unit of system interconnects; TV integrated circuit board to be measured is put into testboard; The testing software of operation control computer; The control computer sends control command to conversion of signals and controller module, automatically TV integrated circuit board to be measured is fixed by conversion of signals and controller module control testboard, turns on the power supply of TV integrated circuit board to be measured and carries out start.

2, send first TCH test channel of order entering by the control computer to conversion of signals and controller module; The control awaiting board card gets into set passage; Control computer simultaneously and send corresponding image control to signal generator, signal generator sends corresponding signal and is given to tested integrated circuit board.

3, TV integrated circuit board to be measured converts picture decoding to and drives the pairing LVDS signal of screen; And send this LVDS signal and be given to the graphic decoder part in conversion of signals and the controller module; Become HDMI or self-defining DVI signal to the LVDS conversion of signals; The voltage test points output voltage that synchronous signal conversion and controller module detect tested integrated circuit board and sends to the control computer to the detection data of each voltage test points whether in the scope that sets

4, after conversion of signals and controller module become HDMI signal or self-defining DVI signal to the LVDS conversion of signals; HDMI signal or self-defining DVI signal are decoded into picture signal once more; And convert image signal data to network signal and send and to be given to computer, switch the audio signal of tested integrated circuit board output (being chosen to one the tunnel such as the multichannel input exports) simultaneously and be given to computer.

5, the control computer receives behind the voltage detecting data that send over, picture signal, the voice signal voltage range data, picture signal, voice signal with former setting and compares and draw test result; Getting into next passage in the same way after the lane testing completion to tested TV integrated circuit board tests; Up to accomplishing all lane testings; After accomplishing, test deposits test result in database, so that information centre's query statistic condition of production at any time.

As shown in Figure 2; Said conversion of signals and control module are made up of external communication interface, controller, graphic decoder module, network switch module; Main being responsible for the LVDS conversion of signals of liquid crystal drive plate is DVI signal or HDMI signal, and then passes to the HDMI signal to decode on the common LCD TV drive plate of band network function and go back original image, is transferred to through network data bundle of lines image then and controls computer and carry out the test result that image comparison obtains image section; The present invention program supports multichannel HDMI input; Just can support a plurality of platforms to test simultaneously, need not increase other system platform, reduce system testing difficulty and system cost.

The utility model whole test process only need be carried out the selection of some test events in early stage, the back system can automatically controling of storage be instructed send, and accomplishes whole testing process automatically, provides examining report.

The utility model is through the TV scheme of existing band network and HDMI function; Conversion of signals and control system in conjunction with control MCU composition; The mode of utilizing Network Transmission is given to computer to the test data transmission and compares test, saves the use image pick-up card, has practiced thrift testing cost.And compatible high, need not to be provided with multiple decoder driver, simple to operate, test is accurately.

The above is the preferred implementation of the utility model; Certainly can not limit the interest field of the utility model with this; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also make some improvement and change, these improvement and change also are regarded as the protection range of the utility model.

Claims

1. a TV integrated circuit board Auto-Test System is characterized in that, comprises that testboard, conversion of signals and controller module, control computer, signal generator connect successively, and the signal generator output connects the testboard input;

2. according to the said TV integrated circuit board of claim 1 Auto-Test System, it is characterized in that said control computer also is connected with database hub, stores the test result of each tested television circuit plate.