Television – Monitoring – testing – or measuring – Test signal generator
Patent
1998-06-22
2000-10-31
Harvey, David E.
Television
Monitoring, testing, or measuring
Test signal generator
348192, H04N 1700
Patent
active
06141042&
ABSTRACT:
To facilitate the measurement of the quality of a video transmission, a bar code is embedded in the top part of the frames of the transmitted video signal to enable identification of each frame. The audio signal may be synchronised with the different bar codes. The bar code may be formed of several blocks in the top of the image, and may be formed of superimposed binary bar codes, each binary bar code being in one color of a color system. This permits measurement of transmission quality, and notably of dropped frames, audio holes, transmission delay, audio and video synchronisation.
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EPO Search Report for EP97410065.
Maistre Pierre-Francois
Martinelli Rene
Mathes Gregory
Harvey David E.
Hewlett--Packard Company
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