Method and circuit for carrying out forward and inverse quantiza

Coded data generation or conversion – Quantizer

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

341 51, 341144, 358135, 375 26, H03M 736

Patent

active

048621730

ABSTRACT:
A succession of input signals supplied to a quantizer is processed at sampling instants into a succession of quantized codes by step sizes with a current one of the quantized codes produced at each sampling instant with reference to a current step size adaptively decided not only by a next previous quantized code and a next previous step size but also by a reference size which is determined in accordance with an average level derived from a plurality of prior quantized codes produced until production of the next previous quantized code. A decoder decodes the quantized code succession into a reproduction of the quantizer input signal succession with each quantized code decoded with reference to a similarly adaptively decided step size. It is possible that the reference step size to be determined in a digital fashion as one of a few predetermined sizes or in an analog manner to be variable between two predetermined reference sizes. Each quantizer input signal may be given either as an analog signal sample or as a digital signal represented by a plurality of bits which are greater in number than the bits of each quantized code produced by the quantizer.

REFERENCES:
patent: 3824590 (1974-07-01), Limb
patent: 3878465 (1975-04-01), Stephenne et al.
patent: 3882426 (1975-05-01), Hoeschele, Jr.
patent: 3922619 (1975-11-01), Thompson
patent: 4039948 (1977-08-01), Boxall
patent: 4144543 (1979-03-01), Koga
patent: 4206447 (1980-06-01), Ching et al.
patent: 4532494 (1985-07-01), Sasaki et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and circuit for carrying out forward and inverse quantiza 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 circuit for carrying out forward and inverse quantiza, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and circuit for carrying out forward and inverse quantiza will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2242139

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.