Apparatus for recording and reproducing temporally compressed di

Details Apparatus for recording and reproducing temporally compressed di Apparatus for recording and reproducing temporally compressed di

1994-06-07

1999-03-02

Chin, Tommy P.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 27, 386112, 386 86, 360 103, H04N 584

Patent

active

058781889

ABSTRACT:
A digital information recording-reproducing apparatus is disclosed, in which a signal temporally compressed to 1
and transmitted is encoded for recording by a recording encoder. The rotation speed of a rotary drum is set at R.sub.1, and the running speed of a magnetic tape at V.sub.1. The signal encoded is recorded on the magnetic tape by magnetic heads. At the time of reproduction, the rotary drum is driven at a speed m
times faster than for recording, and the magnetic tape is run at a speed 1
times faster than for recording. The signal reproduced by the magnetic heads is decoded and restored into the original digital information signal by a reproducing decoder. As a result, there is provided a recording-reproducing apparatus having the function of time-base expansion with a reduced recording time applied to a system for transmitting and recording the software information of video or the like through radio wave or cable.

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"The Institute of Television Engineers of Japan Journal", vol. 47, No. 4, Apr. 1993, pp. 494-499.

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