Test method for wide colour range SDTV digital TV system

A technology of digital TV system and test method, which is applied in the direction of TV, electrical components, image communication, etc., and can solve the problem that there is no wide color gamut TV system and equipment measurement signals, etc.

Inactive Publication Date: 2009-08-19
TIANJIN UNIV
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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...

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  • Test method for wide colour range SDTV digital TV system
  • Test method for wide colour range SDTV digital TV system
  • Test method for wide colour range SDTV digital TV system

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Embodiment Construction

[0035] Based on the working principle of the wide color gamut digital TV system, it provides test methods and test signals that meet relevant standards, are accurate in data, are easy to generate and use, and conform to the testing habits of conventional color gamut TV systems. An important part of digital TV equipment in the field. This patent application is just such an indispensable test signal for wide color gamut SDTV (standard definition television) system research, equipment development, system monitoring, etc., and has wide application prospects and practical value.

[0036] In early 2006, the International Electrotechnical Commission (IEC) formulated and published the "IEC 61966-2-4 Color Management - Extended Gamut YCC Color Space for Video Applications - xvYCC" specification. Based on the transmission compatible with the conventional color gamut TV system, this standard specifies the photoelectric conversion characteristics of wide color gamut digital TV signals, si...

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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 scheme includes 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 and color 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 [0001] 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 [0002] 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 d...

Claims

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Application Information

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IPC IPC(8): H04N17/00
Inventor 徐岩李桂苓李彦李奕潘榕
Owner TIANJIN UNIV
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