A method and device for measuring the quality of a composite video broadcasting signal

A composite video broadcast and measurement method technology, applied in the field of composite video broadcast signal quality measurement, can solve problems such as high test cost and human error, and achieve the effects of improving accuracy, reducing errors, and improving the level of automated testing

Inactive Publication Date: 2018-06-15
SANECHIPS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Even the existing expensive professional test equipment still relies on the tester's settings and manual operation during the test process, which not only costs high, but also inevitably introduces human error

Method used

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  • A method and device for measuring the quality of a composite video broadcasting signal
  • A method and device for measuring the quality of a composite video broadcasting signal
  • A method and device for measuring the quality of a composite video broadcasting signal

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Embodiment Construction

[0036] In the embodiment of the present invention, the pre-stored standard video code stream is converted into CVBS; The CVBS is subjected to analog-to-digital conversion, and the corresponding numerical value of each row of CVBS after conversion is converted according to the row and field synchronous signal in the obtained signal after conversion storing respectively; calculating the quality of the CVBS according to the stored values ​​corresponding to the CVBS of each row.

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] figure 1 A flow chart is implemented for the method for measuring the quality of the composite video broadcasting signal described in the embodiment of the present invention, such as figure 1 shown, including:

[0039] Step 101: converting the pre-stored standard video code stream into CVBS;

[0040] Step 102: Perform analog-to-digital conversion on th...

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Abstract

The invention discloses a method for measuring the quality of a composite video broadcast signal (CVBS). The method comprises: converting a pre-stored standard video code stream into CVBS; performing analog-to-digital conversion on the CVBS, and according to the obtained signal after conversion. The line and field synchronizing signals store the converted values ​​corresponding to each line of CVBS respectively; and calculate the quality of the CVBS according to the stored values ​​corresponding to each line of CVBS. The invention also discloses a device for realizing the method.

Description

technical field [0001] The invention relates to the technical field of video signal performance testing, in particular to a method and device for measuring the quality of a composite video broadcast signal (CVBS). Background technique [0002] CVBS (color, video, blanking, synchronization signal) is a complex composite video signal, which contains a variety of analog voltage levels, time intervals, boundary rates and other indicators. At present, the research and testing of video signal acquisition, recording and processing systems, such as video capture cards, image recorders and TV tracking systems, have been extensive. [0003] The existing test process for CVBS quality is relatively low in automation, so the measurement effect is not very good. Even the existing expensive professional testing equipment still relies on the setting and manual operation of testers during the testing process, which not only costs a lot of testing, but also inevitably introduces human errors...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00
CPCH04N17/00H04N17/02
Inventor 谭智雄朱例行田小峰
Owner SANECHIPS TECH CO LTD
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