Digital filter

Details Digital filter Digital filter

2006-10-10

2006-10-10

Malzahn, D. H. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07120655

ABSTRACT:
Methods and apparatus of signal processing are described. In a method according to one embodiment, a high-frequency region of a digital signal is detected. In response to the detecting, the high-frequency content of the digitized signal is increased in at least a portion of that region.

REFERENCES:
patent: 5432514 (1995-07-01), Mukuda et al.
patent: 6081820 (2000-06-01), Holowko
patent: 1 266 038 (1972-03-01), None
Stuart S. Perlman et al., “Adaptive Median Filtering for Impulse Noise Elimination in Real-Time TV Signals,” IEEE Transactions on Communications, vol. COM-3, No. 6, pp. 646-652, Jun. 1987.
Hyun Man Chang et al., “Implementation of a DSSS Modem ASIC Chip for Wireless LAN,” Signal Processing Systems (SIPS) 1998. 1998 IEEE Workshop on Cambridge, MA Oct. 8-10, 1998, IEEE, New York, NY. pp. 243-252.
PCT Search Report, mailed Jul. 15, 2003 in corresponding PCT/US 03/02200.

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