Method and apparatus for recording and reproducing trick play da

Details Method and apparatus for recording and reproducing trick play da Method and apparatus for recording and reproducing trick play da

1998-03-27

1999-11-23

Nguyen, Huy

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386111, H04N 5783

Patent

active

059914971

ABSTRACT:
A method for recording and reproducing trick play data to and from a digital video tape is provided. In the recording method, an advanced television (ATV) signal which contains normal data used during a normal play mode and intra-frame data used during a trick play mode is input. Furthermore, the intra-frame data, which is capable of being independently decoded, is extracted from the ATV signal. Then, the size of the intra-frame data is adjusted to a predetermined picture size by partially decoding the intra-frame data to produce windowed intra-frame data, and the windowed intra-frame data is recorded as trick play data on the digital video tape. In the reproducing method, the ATV signal containing the normal and trick play data are reproduced from the digital video tape. Moreover, the trick play data is extracted from the ATV signal and formatted during a trick play mode, and the normal data is extracted from the ATV signal during a normal play mode. Then, the normal play data or trick play data is selectively output to a decoder. Accordingly, the method enables various types of video head scanners to record or reproduce the trick play data at a maximum multiple-speed (e.g. a 13-multiple-speed) or less than the maximum multiple-speed. In addition, a recording and reproducing apparatus which performs the method above is also provided.

REFERENCES:
patent: 5377051 (1994-12-01), Lane et al.
patent: 5543932 (1996-08-01), Chang et al.
patent: 5550643 (1996-08-01), Azadegan
patent: 5587789 (1996-12-01), Lee et al.
patent: 5661845 (1997-08-01), Sugiyama
patent: 5712946 (1998-01-01), Yanagihara
patent: 5832172 (1998-11-01), Jeon

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