Method and apparatus for implementing wavelet filters in a...

Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S240110, C375S240250, C375S245000, C382S232000

Reexamination Certificate

active

10665702

ABSTRACT:
A digital data system (100) provides 1-D, 2-D and 3-D capability and multi-band channel capability. Improved filter banks are created by generating a filter bank having an analysis portion and synthesis portion and obtaining wavelet coefficients (302) for each portion. The wavelet coefficients are expressed in a format capable of canonical signed digit (CSD) representation, such as integers (302). The canonical signed digit (CSD) representation is controlled by a value, N, selected to control resolution of the CSD coding. Optimized CSD-coded wavelet coefficients are used as filters for data signals (318).

REFERENCES:
patent: 5844610 (1998-12-01), Perdrieau et al.
patent: 5848164 (1998-12-01), Levine
patent: 5890125 (1999-03-01), Davis et al.
patent: 5953388 (1999-09-01), Walnut et al.
patent: 6128346 (2000-10-01), Suarez et al.
patent: 6456657 (2002-09-01), Yeap et al.
Hartley; Optimization of Canonic Signed Digit Multipliers for Filter Design, Circuits and Systems, 1991, pp. 1992-1995, vol. 4.

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 apparatus for implementing wavelet filters in a... 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 apparatus for implementing wavelet filters in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for implementing wavelet filters in a... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3871487

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