Encoding method and apparatus, and decoding method and...

Details Encoding method and apparatus, and decoding method and... Encoding method and apparatus, and decoding method and...

2005-08-16

2005-08-16

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

Adaptive coding

C341S050000, C341S065000, C341S107000, C348S402100

Reexamination Certificate

active

06930618

ABSTRACT:
In an encoding apparatus (10), a code table group exchange judgment unit (12) selects a group of code tables from a plurality of groups of code tables according to the property such as tonality of a spectrum signal D11, and a quantization unit (15) encodes quantization coefficients using a code table included in the selected group. Then, a multiplexer (18) multiplexes a group index D12together with coefficient data D17. Furthermore, in case resources for an encoder is small, and sound quality may have to be somewhat degraded so as to realize practical encoding speed, a code table number change judgment unit (17) changes or reduces the number of code tables to be used.

REFERENCES:
patent: 3891143 (1975-06-01), Haeusler
patent: 4862167 (1989-08-01), Copeland, III
patent: 5337087 (1994-08-01), Mishima
patent: 5606421 (1997-02-01), Suzuki et al.
patent: 5835030 (1998-11-01), Tsutsui et al.
patent: 6252992 (2001-06-01), Ishikawa
patent: 6271885 (2001-08-01), Sugiyama
patent: 6717534 (2004-04-01), Yokose
patent: 05-13414 (1993-05-01), None
patent: 08-316846 (1996-11-01), None
patent: 09-36752 (1997-02-01), None
patent: 11-8771 (1999-01-01), None
patent: 2002-27472 (2002-01-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3497173