Automatic television circuit board function testing method and system

Abstract

The invention discloses an automatic television circuit board function testing method and an automatic television circuit board function testing system. The system consists of a test board for arranging a television circuit board to be tested, a signal conversion and controller module, a control computer and a signal generator which are sequentially connected, wherein the output end of the signalgenerator is connected with the input end of the test board. In the method and the system, test data is transmitted to a computer for comparison test in a network transmission way by adopting a conventional television scheme with network and high-definition multimedia interface (HDMI) functions in combination with a signal conversion and control system consisting of a micro control unit (MCU) to cancel an image acquisition card and save test cost. The scheme provided by the invention supports multi-path HDMI input and further supports the simultaneous test of a plurality of platforms without additional system platforms, so system test difficulties and system cost are reduced.

Description

technical field [0001] The invention relates to the field of television testing, in particular to an automatic testing method and system for the function of a television circuit board. Background technique [0002] With the scale development of LCD TVs, the division of labor is becoming more and more detailed. There are a large number of drive scheme design companies and power supply design companies in the market, and the testing of batch drive scheme boards is very complicated because the input ports have many functions. For example: AV, SVIDEO, YPbPr, HDMI, DVD, USB, ATV, DTV, DVI, etc., as well as corresponding audio input interfaces. At present, it mainly relies on manual testing methods, and the operation is complicated, which is prone to problems such as missed testing and false testing. , has a very large impact on the quality of product shipments, and the development direction of automation must replace the existing manual operation methods. [0003] The scheme wit...

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Problems solved by technology

[0002] With the scale development of LCD TVs, the division of labor is becoming more and more detailed. There are a large number of drive scheme design companies and power supply design companies in the market, and the testing of batch drive scheme boards is very complicated because the input ports have many functions. For example: AV, SVIDEO, YPbPr, HDMI, DVD, USB, ATV, DTV, DVI, etc., as well as corresponding audio input interfaces. At present, it mainly relies on manual testing methods, and the operation is complicated, which is prone to problems such as missed testing and false testing. , has a very large impact on the quality of product shipments, and the development direction of automation must replace the existing manual operation methods

[0003] The scheme with the patent application number 201010275525.8 describes the method of testing through the acquisition card. This method mainly adopts the method of collecting LVDS signals. The technology of the acquisition card is mainly mastered abroad, with NI (National Instruments Corporation) as the mainstream representative , the cost is very high, and a full-time LabVIEW (graphical development environment) engineer is required. Because the PCI-E data interface is used, when the same test station needs to test multiple platforms at the same time, each platform needs an acquisition card. The requirements of the PC are very high, and every time a new driver board is replaced, the driver needs to be modified and debugged. The maintenance cost is very high and the cycle is long, which is not conducive to the factory's line change configuration.

And the existing solution only supports the display resolution up to 1920*1080 / 60Hz. For the new 120Hz display, the driver board of the 3D screen cannot complete the test

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