Quantizing and dequantizing circuit with reduced size

Details Quantizing and dequantizing circuit with reduced size Quantizing and dequantizing circuit with reduced size

1994-12-28

1997-06-03

Young, Brian K.

Coded data generation or conversion

Quantizer

H03M 700

Patent

active

056359381

ABSTRACT:
A quantizing and dequantizing circuit has a first memory circuit with integer addresses, in which reciprocal data are stored, and a second memory circuit, in which a quantization table of integers is stored. The Integers stored in the second memory circuit are provided to the first memory circuit as address signals, causing output of the corresponding reciprocal data. Data to be quantized are multiplied by the reciprocal data output by the first memory circuit. Data to be dequantized are multiplied by the integers output from the second memory circuit.

REFERENCES:
patent: 4658239 (1987-04-01), Grallert
patent: 4694417 (1987-09-01), Cantwell
patent: 4920411 (1990-04-01), Miyakawa
patent: 5136290 (1992-08-01), Bond et al.
patent: 5243342 (1993-09-01), Kattemalaiavadi et al.
patent: 5430556 (1995-07-01), Ito
International Standard DIS 10918-1, CCITT Recommendation T.81, Digital Compression and Coding of Continuous-Tone Still Images, Part I: Requirements and Guidelines, pp. A-6, A-7. (no date available).

Affiliated with

Also associated with

Rating

Quantizing and dequantizing circuit with reduced size does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Quantizing and dequantizing circuit with reduced size, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantizing and dequantizing circuit with reduced size will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-394624