Variable length code recording/playback apparatus

Details Variable length code recording/playback apparatus Variable length code recording/playback apparatus

1993-03-24

1998-05-12

Sniezek, Andrew L.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 68, 386 33, 348390, H04N 5917

Patent

active

057518939

ABSTRACT:
A variable length code recording/playback apparatus, which by encoding intra-frame data and inter-frame data in variable length code, records them as recorded codes on prescribed locations of tracks of a recording medium and plays them back, which includes a data rearranger for recording the data in areas to be played back at least two specific speed mode playbacks on the tracks by rearranging prescribed data out of the data encoded in variable length code, a variable length decoder for playing back the data recorded on the recording medium and decoding it in variable length code, a data restorer for controlling and restoring the time series of the output of the variable length decoder to the original data train before the rearrangement, and a decoder for constructing a playback picture from the decoded outputs for several frames in the specific speed mode playback by decoding the output of this data restorer.

REFERENCES:
patent: 4920426 (1990-04-01), Hatori et al.
patent: 5122875 (1992-06-01), Raychaudhuri et al.
patent: 5136391 (1992-08-01), Minami
patent: 5140437 (1992-08-01), Yonemitsu et al.
patent: 5175631 (1992-12-01), Juri et al.
Pereira et al., "A CCITT Compatible Coding Algorithm for Digital Recording of Moving Images", Signal Processing. Image Communication, vol. 2, No. 2, Aug. 1990, Amsterdam NL pp. 155-169.
Herpel et al., "Adaptation and Improvement of CCITT Reference Model 8 Video Coding for Digital Storage Media Applications", Signal Processing. Image Communication, vol. 2, No. 2, Aug. 1990, Amsterdam NL pp. 171-185.

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