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

1993-04-29

1996-08-06

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

360 101, H04N 979, H04N 578

Patent

active

055439276

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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