Test method for wide colour range SDTV digital TV system

Abstract

The invention relates to a digital television technique and a high definition television technique, in particularly a method for detecting wide colour range SDTV digital television system which provides practicability detecting means for wide color range SDTV system arithmetic performance evaluation, wide color range SDTV digital television product and system quality detecting. A technique schemeincludes steps as follows: confirming signal value range and a relationship table between the transmitted range and quantification grade value according with quantification equation of brightness andcolor difference signal; calculating for obtaining the transmitted signal value data file according with theory that brightness signal in the color strip signal is equal to maximum value and minimum value of the brightness signal, the color difference signal is equal to zero and adding color mixing, and SDTV encoding equation; writing the data file into a memorizer; reading the data file according with a scanning standard of the television system, and transmitting the data file into a physical signal for detecting the wide color range SDTV system. The technique provided by the invention is mainly used for detecting HDTV digital television system.

Description

technical field The invention relates to digital television technology and standard-definition television technology, in particular to a testing method for a wide color gamut SDTV 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 princip...

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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