Method and apparatus for testing codec devices

Details Method and apparatus for testing codec devices Method and apparatus for testing codec devices

1992-07-13

1994-05-17

Groody, James J.

Television

Monitoring, testing, or measuring

Test signal generator

328187, 328188, 348189, H04N 1702, H04N 1704

Patent

active

053132807

ABSTRACT:
A video codec evaluation method and apparatus is provided that permits an objective evaluation of the performance of a codec. A plurality of motion graphics scenes, selected to test for specific motion artifacts, are stored on a video disc which is read by a video player and supplied to a codec under test. The evaluator views the graphic scenes as processed by the codec, on a monitor, and uses visual and audible scoring levels, that are incorporated on the disk, and associated with the graphic scene, to identify the onset or disappearance of motion artifacts and record a score for the test.

REFERENCES:
patent: 4479146 (1984-10-01), Cohn
patent: 4724484 (1988-02-01), Ward
patent: 4970602 (1990-11-01), Yoshio
patent: 5051827 (1991-09-01), Fairhurst

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