Video/audio transmission systsem and method

Details Video/audio transmission systsem and method Video/audio transmission systsem and method

1989-12-22

1991-09-03

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 85, 358 86, 379 53, 364514, 364521, H04N 700

Patent

active

050459406

ABSTRACT:
The invention is a data pipeline system which synchronizes the display of digitzed audio and video data regardless of the speed at which the data was recorded on its linear medium. To do this, the video data is played at a constant speed, synchronized by the audio speed. Further, the invention uses a method of "staging" data in storage buffers, i.e., ring buffers, which encourages efficient use of the viewer module resources by not permitting the viewer to read excessive amounts of data at any one time, i.e., to read only enough data into any one ring buffer so that the amount of data in the ring buffer is roughly equivalent to the amount of data in the other ring buffers and yet permitting the viewer to read large enough chunks of data to promote efficient use of the fill system.

REFERENCES:
patent: 3609227 (1971-09-01), Kuljian
patent: 4698664 (1987-10-01), Nichols et al.
patent: 4882743 (1989-11-01), Mahmond
patent: 4949169 (1990-08-01), Lumelsky et al.

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