Test method for wide color domain HDTV digital television system

Abstract

This invention relates to digital television technology and high definition television technology, especially a wide color range HDTV digital television system testing method, aiming to provide practical testing measures for wide color range HDTV system algorithm performance evaluation, and quality testing for wide color range HDTV digital television product and system. The technical scheme of this invention comprises: determining signal valuing range according to quantifying formula of brightness and color difference signals, determining relation table between transmittable range and quantification level value, in accordance with HDTV encoding formula, condition that brightness signals of white strip and black strip in color strip signals are respectively equal to maximal value and minimal value of brightness signals, color difference are equal to zero and principle of sum of color, calculating to transmission signal value to obtain data file, writing the data file in a storage, then reading according to scanning standards of television system, then converting into physical signals to test wide color range HDTV system. This invention is mainly used for testing HDTV digital television system.

Description

technical field The invention relates to digital television technology and high-definition television technology, in particular to a testing method for a wide color gamut HDTV digital television system. Background technique With the rapid development of modern technology and industry, a variety of new display devices and display technologies have emerged in recent years. In addition to the traditional cathode ray tube (CRT), liquid crystal display (LCD), plasma display (PDP), digital optical processing A variety of new display devices such as DLP, liquid crystal display on silicon (LCoS), light-emitting diode backlight liquid crystal display (LED-LCD) have been put into practical use or have been successfully developed. In terms of display methods, in addition to the direct view type, front projection, rear projection and laser projection displays have also been put into practical use. These new high-end display devices and display methods are based on different principles,...

AI Technical Summary

Problems solved by technology

At present, the development of wide color gamut camera and imaging products has made great progress, and the performance is constantly improving, which greatly promotes the theoretical research and standardization work of wide color gamut TV systems. However, there is currently no wide color gamut TV system and equipment. measurement signal

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