Variable speed playback of digital video stored in a non-tape me

Details Variable speed playback of digital video stored in a non-tape me Variable speed playback of digital video stored in a non-tape me

1996-12-30

1997-09-23

Chevalier, Robert

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

H04N 591

Patent

active

056713185

ABSTRACT:
A method for high speed playback of digital video data (e.g. D1 or D2 data) in which, at lower speeds, the frames of data to be played back are made of a mixture of consecutive frames of data. The frames of data are mixed by averaging the pixel values over consecutive frames to make up the output frames. For high speed shuttle operation, non-consecutive frames are averaged on a pixel by pixel basis to create shuttle frames. In order to improve the appearance of the output, consecutive shuttle frames contain a common original frame so that a component of the original data spans two output frames.

REFERENCES:
patent: 4847701 (1989-07-01), Suesada
patent: 5072296 (1991-12-01), Lim
patent: 5305113 (1994-04-01), Iwamura et al.
patent: 5341250 (1994-08-01), Uchida et al.
patent: 5404170 (1995-04-01), Keating
Records of the 13th International TV Symposium; 28 May-2 Jun. 1983 Montreux, CH, pp. 409-422, Wilkinson, et al. "Replay of Digital Recordings at non-standard Tape Speeds".

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