Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2007-12-25
2007-12-25
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
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.
Pirez Yolanda M.
Prieto Yolanda
Suarez Jose I.
Ghayour Mohammed
Malek Leila
Motorola Inc.
LandOfFree
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.
Profile ID: LFUS-PAI-O-3871487