Television – Monitoring – testing – or measuring – Transmission path testing
Patent
1998-07-25
2000-04-25
Kostak, Victor R
Television
Monitoring, testing, or measuring
Transmission path testing
348184, H04N 1700
Patent
active
060550155
ABSTRACT:
A picture quality monitoring system for a television chain provides incremental metrics for each layer of the chain--video, compression and modulation. The output of each layer is stored as a reference signal for the next or subsequent layers. The output from each layer is compared with the output from a prior layer to determine an incremental degradation metric. All of the incremental degradation metrics may be combined to produce an overall degradation metric for the entire television chain.
REFERENCES:
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patent: 5446492 (1995-08-01), Wolf et al.
patent: 5574499 (1996-11-01), Nasu
patent: 5574500 (1996-11-01), Hamada et al.
patent: 5751766 (1998-05-01), Kletsky et al.
patent: 5862451 (1999-01-01), Grau et al.
Gray Francis I.
Kostak Victor R
Tektronix Inc.
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