Field elimination apparatus for a video compression/decompressio

Details Field elimination apparatus for a video compression/decompressio Field elimination apparatus for a video compression/decompressio

1994-10-18

1995-06-20

Britton, Howard W.

Television

Bandwidth reduction system

Data rate reduction

348401, 348423, H04N 750

Patent

active

054264642

ABSTRACT:
Video signal compression apparatus includes a memory for storing two fields of image data and providing fields of image data separated by one frame intervals. Image data from corresponding fields of successive frames are subtracted to generate field differences. The field differences are accumulated over respective field intervals, and the sum is compared against a predetermined value. If a sum of differences over a field is less than the predetermined value, the most recent field is considered to be redundant and may be excised. After respective fields are excised, frames of video signal are composed from the remaining fields. The field types (e.g., odd or even) of the fields in the memory are determined, and the data is accessed from the respective fields in memory such that data from odd and even fields occupy odd and even lines in the composed frames respectively. Flags are associated with composed frames to indicate which fields contain data associated with excised fields, and which field of the composed frames should be displayed first.

REFERENCES:
patent: 3184542 (1965-05-01), Horsley
patent: 4998287 (1991-03-01), Katznelson
patent: 5093720 (1992-03-01), Krause

Affiliated with

Also associated with

Rating

Field elimination apparatus for a video compression/decompressio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Field elimination apparatus for a video compression/decompressio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Field elimination apparatus for a video compression/decompressio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1847562