04179709 is referenced by 50 patents and cites 5 patents.

Methods and apparatus for video information bandwidth compression arrange the video information in image fields and subfields and provide for the subfields a system of coefficients having a first coefficient indicative of average subfield luminance as to any given subfield and including a selected number of further coefficients indicative of spatial content of the particular subfield. The first and further coefficients are updated with the first coefficient being updated for each subfield as to each utilized field and the further coefficients being updated less frequently than the first coefficient. The subject invention is also applicable to bandwidth compression of recurring information other than video signals.

Title
Video information bandwidth compression
Application Number
5/868236
Publication Number
4179709
Application Date
January 10, 1978
Publication Date
December 18, 1979
Inventor
Dennis L Workman
Morgan Hill
CA, US
Agent
Benoit Law Corporation
Assignee
Bell & Howell Company
IL, US
IPC
H04M 7/12
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