Realization of Video Signal Source Generating Device Using Programmable Logic Gate Array

Abstract

A device for generating video signal sources using a programmable logic gate array, consisting of a bus unit, a first index value generator, a second index value generator, a combiner, a look-up table unit, a synchronization signal generator and a synchronization processing unit ; The external control unit inputs control signals to the first index value generator, the second index value generator, the look-up table unit and the synchronous signal generator respectively through the bus unit, and the first index value generator and the second index value generator The generator outputs the X (horizontal) direction index value and the Y (vertical) direction index value to the combiner to generate an index value, which will be input to the look-up table unit to obtain the color information of the display screen, and simultaneously The synchronous signal generated by the signal generator is input to the synchronous processing unit for synchronous processing, so as to generate a diversified video signal source.

Description

technical field [0001] The present invention relates to a device for generating video signal sources using a programmable logic gate array, in particular to a signal source that uses a programmable logic gate array to generate a variety of video signal sources for testing related liquid crystal display modules or products generating device. Background technique [0002] Conventional video signal generators using a display memory architecture have advantages such as high flexibility, images that can be generated, and diverse uses; however, they do have disadvantages such as high cost and difficult operation and installation. It is not suitable for test systems that require a large number of signal sources, such as fixed burn-in systems and mobile test systems. [0003] The video signal source generally used in the fixed burn-in system, even if it is used with a signal distributor to share the same signal source to reduce the cost of the signal source, it will complicate the ...

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Problems solved by technology

[0003] It is generally used for video signal sources in fixed burn-in systems. Even if a signal distributor is used to share the same signal source to reduce the cost of the signal source, it complicates the wiring of the signal lines and is not conducive to installation and operation.

Due to the complex structure of the video signal generator, coupled with the long-term burn-in test, the video signal generator will have disadvantages such as difficult control of stability and shortened service life.

[0004] As for the video signal source generally used in mobile testing, since each LCD module must be equipped with an independent signal source, considering the cost factor, it is impossible to use a large number of high-end video signal generators, so a streamlined video signal generator is adopted. device, but the existing streamlined signal source is too streamlined to meet the diverse testing requirements

[0005] It can be seen that the above-mentioned customary method still has many deficiencies, and it is not a good designer, and needs to be improved urgently.

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