Video signal monitoring apparatus

Details Video signal monitoring apparatus Video signal monitoring apparatus

2004-02-13

2008-07-29

Lee, M. (Department: 2622)

Television

Monitoring, testing, or measuring

Monitor

C348S184000, C345S590000

Reexamination Certificate

active

07405748

ABSTRACT:
An apparatus for monitoring a video signal comprises means for detecting a gamut error in an R component, means for detecting a gamut error in a G component, and means for detecting a gamut error in a B component. The means for detecting a gamut error in the R component includes: means for generating a first condition Y>S−a×Pr (where a is a predetermined coefficient) and a second condition Y<T−a×Pr from a Pr component of a Y/color difference component signal and an upper limit value S and a lower limit value T of the RGB component signal. The apparatus further comprises means for making a gamut error state visually recognizable with respect to the R component when the first condition or the second condition is satisfied.

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patent: 2007/0091213 (2007-04-01), Jaspers
patent: 4-77518 (1992-08-01), None

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