Optical disk recorder for video signals and an optical disk for

Details Optical disk recorder for video signals and an optical disk for Optical disk recorder for video signals and an optical disk for

1994-06-03

1997-01-21

Chin, Tommy P.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

348 42, 348 44, 348420, 386109, H04N 585

Patent

active

055964214

ABSTRACT:
A video recorder for recording a video signal having one frame period and having a high resolution such as a high definition television signal. The video signal in a frame period is divided into two groups for corresponding to a respective field period of the video signal. The two groups are encoded efficiently and independently of each other. After encoding the respective data as respective variable length data signals, pseudo data is added to either one of the variable length data signals having a smaller amount of variable length data than the other variable length data signal so that the amount of variable length data in the divided signals is substantially equal for a designated period. The encoded data is then recorded on an optical disk by a recording mechanism using two respective channels. When reproducing a video signal having lower resolution, such as is used for a standard television system, the video signal is reproduced by decoding the encoded data for one channel. When reproducing video signal having a higher resolution, such as a high definition television signal, the video signal is reproduced by decoding the encoded data from both channels.

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J. Boyce & F. Lane, "Fast Scan Technology For Digital Video Tape Recorders", IEEE Transactions on Consumer Electronics, vol. 39, No. 3, (8-93).

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