Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1996-01-11
1999-11-02
Chevalier, Robert
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
396 96, 396 46, H04N 5926, H04N 591, H04N 700
Patent
active
059785462
ABSTRACT:
A VTR compatible with the current analog VTR and capable of recording and reproducing digital signals identifies the type of a tape cassette by the presence or absence of a cassette identification hole formed in a digital recording tape cassette determines tape speed for a recording mode on the basis of the ratio between the frequency of a control signal and the rotating speed of a capstan motor, determines the presence or absence of recorded digital signals through the synchronous detection of reproduced output, and decides the mode for recording and reproducing on the basis of those decisions. Thus, the automatic discrimination between the analog mode and the digital mode can be achieved and erroneous operations, such as an erroneous erasing operation can be prevented.
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Terebijon Gakkai-shi, vol. 47, No. 6, pp. 814-825 (1993).
Terebijon Gakkai-shi, vol. 47, No. 4, pp. 486-503 (1993).
Abe Hiroya
Kaniwa Kouji
Nakamoto Toshio
Nishijima Hideo
Torii Hiroyuki
Chevalier Robert
Hitachi , Ltd.
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