Built-in test for dynamic raster video output

Details Built-in test for dynamic raster video output Built-in test for dynamic raster video output

1994-05-03

1997-02-11

Kostak, Victor

Television

Monitoring, testing, or measuring

Testing of image reproducer

348180, 348181, H04N 1702

Patent

active

056025866

ABSTRACT:
A built-in test for dynamic raster video output is described for testing a plurality of analog video signals created from digital raster data, each of the analog signals having a plurality of analog signal components. In the apparatus, an addressing device is provided for selecting one of the analog signals to be tested, and a selector selects a desired analog signal component from the selected analog signal. An A/D converter then converts the selected signal component into a digital signal component, and a characteristic value is extracted therefrom. A memory is provided which stores predetermined characteristic value range data, and the extracted characteristic value is compared with the stored range data by a comparator to produce a result. A combination device then creates a combination of the result and an address of the selected analog signal component, and the combination is then stored for later retrieval.

REFERENCES:
patent: 5309376 (1994-05-01), Barraco et al.
patent: 5311295 (1994-05-01), Tallman et al.
patent: 5345262 (1994-09-01), Yee et al.

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