Arrangement for two-dimensional DPCM coding

Details Arrangement for two-dimensional DPCM coding Arrangement for two-dimensional DPCM coding

1984-08-17

1987-01-13

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

375 27, H04N 713

Patent

active

046368566

ABSTRACT:
An arrangement for differential pulse code modulation coding comprises a controllable quantizer and a quantizer controller and is dependent on picture signal values. The quantizer controller contains a plurality of series-connected registers which store adjacent picture element signal values. A comparison device provides a differential formation between all picture signal values and a control is provided to which all results of the difference formations are supplied and which controls a multiplexer such that only the respectively highest and lowest picture signal values, the extrema, are through-connected for further processing. A subtractor, wherein the difference between the last picture element signal value and the extrema, as well as between the extrema themselves are identified is also provided. A difference selection control through-connects the maximum difference to a threshold logic which controls the quantizer in accordance with the amount of the maximum difference.

REFERENCES:
patent: 4200886 (1980-04-01), Musmann et al.
patent: 4255763 (1981-03-01), Maxemchuk et al.

Affiliated with

Also associated with

Rating

Arrangement for two-dimensional DPCM coding does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangement for two-dimensional DPCM coding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for two-dimensional DPCM coding will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2359367