Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1986-08-14
1988-02-09
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
360 27, H04N 1704, H04N 1706
Patent
active
047244844
ABSTRACT:
A system for testing video equipment includes a video cassette tape cassette which carries prerecorded test signals and patterns such as NTSC standard color bar test patterns, dot patterns, convergence patterns and the like. Playback of the video tape enables one to determine if a video player, recorder, television receiver or monitor is in need of adjustment and permits adjustments without complex test equipment. The test signals are recorded in segments at different speeds to test speed playback functions of the player or recorder and may include a visual countdown for synchronization of subsequent recording. To produce the video tape cassettes with the prerecorded test signals and patterns, a test pattern generator is utilized to provide a signal which is fed to a video recording head. The video recording head records the signals and patterns on a leader portion of each tape prior to loading into a cassette.
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patent: 4400742 (1983-08-01), Yamamitsu et al.
patent: 4542424 (1985-09-01), Ishihara
patent: 4583134 (1986-04-01), Nakamichi
patent: 4620239 (1986-10-01), Fujii
"The SMPTE Service of Test Films and Slides for Motion Pictures and Television", Journal of the Society of Motion Picture and Television Engineers, Aug. '74, vol. 83, #8; by Weinshenk-Tabernero; pp. 658-661.
"The Complete Handbook of Video Cassette Recorders", Kybett, #1211, pp. 265-266, .COPYRGT.1981.
"Servicing Home Video Cassette Recorders", Hobbs, .COPYRGT.1982, pp. 108-119, 167.
Britton Howard W.
Kostak Victor R.
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