Method and system for transform coding of video signals

Details Method and system for transform coding of video signals Method and system for transform coding of video signals

1988-04-28

1989-12-12

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, 358135, 358136, H04N 7133, H04N 7137

Patent

active

048871567

ABSTRACT:
A coding system in accordance with the present invention includes a control signal generating circuit for generating a control signal indicative of a quantity of band limitation by calculating a ratio of an area of motion from an input video signal. A band limiter band-limits a transform-coded video signal in response to the control signal. For example, when the picture is stationary or little moved, the transform-coded video signal is not band-limited at all; when the area of motion is medium, high frequency components of a part of the video signal are omitted to cope with an increase in the amount of data generated; and when the area of motion is extremely great, many high frequency components are omitted to accommodate a rash of data. A prediction coding circuit predictively codes the band-limited video signal before the latter is sent out to a transmission path.

REFERENCES:
patent: 4447886 (1984-05-01), Meeker
patent: 4541012 (1985-09-01), Tescher

Affiliated with

Also associated with

Rating

Method and system for transform coding of video signals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for transform coding of video signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for transform coding of video signals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2125417