Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1982-03-08
1984-06-19
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
H04N 712
Patent
active
044555717
ABSTRACT:
A compression and expansion system for a composite video signal comprises an extracting circuit for judging maximum and minimum points in a video signal of a composite video signal, to extract these maximum and minimum points, a digital value obtaining circuit for obtaining digital values of levels of the extracted points and digital values of positions of the extracted points in the video signal, to record and reproduce or transmit these digital values thus obtained, a circuit for performing interpolation to connect a digital value of the level and position of the extracted point which is reproduced or transmitted with a digital value of the level and position of a point which is succeedingly extracted, in a substantially linear manner, in order to expand the video signal, and a circuit for mixing a composite synchronizing signal which is separately produced with the analog video signal, to obtain the original composite video signal.
REFERENCES:
patent: 2959639 (1960-11-01), Pierce
patent: 4179710 (1979-12-01), Ishiguro
patent: 4286291 (1981-08-01), Taylor
Webster; David, "Digital Picture Coding", Wireless World, Oct. 1978, pp. 67-70.
Sato Kiyoshi
Shimizu Kyoichi
Takahaski Tadashi
Britton Howard W.
Victor Company of Japan Ltd.
LandOfFree
Compression system and compression and expansion system for a co does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compression system and compression and expansion system for a co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compression system and compression and expansion system for a co will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-416101