Television – Monitoring – testing – or measuring – Test signal generator
Reexamination Certificate
2007-02-20
2007-02-20
Kostak, Victor R. (Department: 2622)
Television
Monitoring, testing, or measuring
Test signal generator
C348S192000, C714S048000, C714S819000
Reexamination Certificate
active
10411368
ABSTRACT:
A DTV receiver test stream generator which prevents discontinuity phenomenon of a video and an audio, a method for generating the DTV receiver test stream, and a recording medium where the DTV test stream having no discontinuity phenomenon is recorded. To this end, a test stream for a function test or a performance valuation of the DTV receiver is generated and a reproduction time is equalized on the basis of the least common multiple of a video frame time, an audio frame time, and a TS packet time when the test stream is repeatedly reproduced. According to this, when used at a DTV production field where a test pattern is used or at a broadcasting system which repeatedly transmits the DTV stream of a limited length such as a stationary image, a reliability of the DTV receiver test can be ensured.
REFERENCES:
patent: 6101195 (2000-08-01), Lyons et al.
patent: 6826185 (2004-11-01), Montanaro et al.
patent: 6988238 (2006-01-01), Kovacevic et al.
Han Chan-Ho
Jang Hi-Chul
Kim Jong-Sik
Park Douk-Hwan
Sohng Kyu-Ik
Fleshner & Kim LLP.
Kostak Victor R.
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