Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1979-11-26
1982-03-23
Konick, Bernard
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
369 44, 369 46, H04N 576
Patent
active
043216226
ABSTRACT:
TV playback apparatus and method for a record having track sets comprising video track analogs and a plurality of audio track analogs disposed between the video tracks. All tracks in a respective track set are sensed for playback by a movable reading head incorporating a combination of video and audio sensing elements and including tracking of homing elements flanking the video reading element. A track set switching signal is sensed from the audio signal by an audio reading element for a controller means which very quickly slews the reading head to roughly position the video reading element for next video track. Such video track is sensed by any reading element in the reading head and determined through a multiplexer and controller means. Reading head is further stepped as necessary until video track sensing element is reading video track as controller receives video signal through band pass filter video sensing element. Position adjustment further made by controller, only as necessary, responsive to respective signals by tracking elements. The entire switching cycle from one video track to next is completed in substantially less time than attainable by any previously known prior art method or apparatus.
REFERENCES:
patent: 3198880 (1965-08-01), Toulon
patent: 3381086 (1968-04-01), De Moss
patent: 3737877 (1973-06-01), Feinleib
patent: 3789137 (1974-01-01), Newell
patent: 3829610 (1974-08-01), Meeussen
patent: 3919697 (1975-11-01), Walker
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"A Random Access System Adapted for the Optical Videodisc" by M. Mathieu, Journal of SMPTE, Feb. 1977, pp. 80-83.
Faraghan Geoffrey T.
Jerome Jonathan A.
Neu Frank D.
Cone Gregory A.
Faber Alan
Finch George W.
Konick Bernard
McDonnell Douglas Corporation
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