Television – Monitoring – testing – or measuring – Test signal generator
Patent
1992-07-23
1994-06-28
Kostak, Victor R.
Television
Monitoring, testing, or measuring
Test signal generator
H04N 504
Patent
active
053251970
ABSTRACT:
A television signal processing unit which provides monitoring to detect erroneous operation of one or more circuit sections thereof during periods of the television signal. The processing unit includes a test signal generator and an evaluation circuit, the test signal generator supplying a test signal to a circuit section of the processing unit during allocated periods of each picture frame. The evaluation circuit compares the processed test signal produced by such circuit section with a predetermined specimen signal corresponding to correct circuit operation, and produces an error indication when the processed test signal differs from the specimen signal. The allocated test periods may be during portions of each picture frame which are not assigned to video information, or during other portions of a picture frame wherein no video information is actually present.
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patent: 4931877 (1990-06-01), Gebhardt et al.
patent: 5047855 (1991-09-01), Correa
M. Gendsior et al., "HD-MAC-Ubertragung mit 140 Mbit/s", NTZ, vol. 42, 1989, No. 9, pp. 638-647.
Eason Leroy
Kostak Victor R.
U.S. Philips Corporation
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