Encoding apparatus and method

Details Encoding apparatus and method Encoding apparatus and method

2005-08-09

2005-08-09

Kelley, Chris (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

06928113

ABSTRACT:
An encoding apparatus and method prevents image deterioration generated by repeatedly performing encoding and decoding by using a quantization matrix for quantization which is different from a quantization matrix for inverse quantization. In the encoding apparatus, a matrix selector selects a first quantization matrix in accordance with the complexity of an encoded picture pattern, and supplies a quantizer with information on the selected first quantization matrix. A matrix unit rewrites, by information on a second quantization matrix, the information described in an encoded stream output from a variable length code unit so that a quantization matrix to be used for inverse quantization is a second quantization matrix different from the first quantization matrix.

REFERENCES:
patent: 5461682 (1995-10-01), Nomura
patent: 6025878 (2000-02-01), Boyce et al.
patent: 6092920 (2000-07-01), Sakamoto
patent: 6249614 (2001-06-01), Kolesnik et al.
patent: 0 735 771 (1996-10-01), None
patent: 0 740 472 (1996-10-01), None
patent: 0 784 410 (1997-07-01), None
patent: 0 944 261 (1999-09-01), None
patent: WO 98 35503 (1998-08-01), None

Affiliated with

Also associated with

Rating

Encoding apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Encoding apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encoding apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3514939