Filter control for varying data rate communication channels

Pulse or digital communications – Equalizers – Automatic

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S377000

Reexamination Certificate

active

10117467

ABSTRACT:
Processing circuitry includes an analog filter and filter control circuitry and processes an analog signal having a varying data rate. The analog filter filters the analog signal based on a transfer characteristic to transfer a filtered signal. The filter control circuit processes a data clock signal corresponding to the varying data rate and a reference clock signal to generate a filter control signal to adjust the transfer characteristic in proportion to the varying data rate. The analog filter adjusts the transfer characteristic in proportion to the varying data rate in response to the filter control signal. The processing circuitry may be implemented in a tape, magnetic, or optical drive.

REFERENCES:
patent: 5083571 (1992-01-01), Prichep
patent: 5327302 (1994-07-01), Khoury et al.
patent: 5422760 (1995-06-01), Abbott et al.
patent: 5432513 (1995-07-01), Okamoto
patent: 5463603 (1995-10-01), Petersen
patent: 5682125 (1997-10-01), Minuhin et al.
patent: 5764428 (1998-06-01), Soda
patent: 5903857 (1999-05-01), Behrens et al.
patent: 6304134 (2001-10-01), Pavan
patent: 6522489 (2003-02-01), Nagaraj
patent: 6643787 (2003-11-01), Zerbe et al.
patent: 2369021 (2002-05-01), None
patent: 10-289531 (1997-09-01), None
Choi, Davy, “An Analog Front-End Signal Processor for 64Mb/s PRML Hard-Disk Drive Channel,” IEEE International Solid-State Circuits Conference, (1994) Feb., New York.
Khoury, John M., “A 15MHz CMOS Continuous-Time Bessel Filter for Disk Drives,” IEEE International Solid-State Circuits Conference (1991) Feb., New York.
Kim, Beomsup, et al., “An Integrated CMOS Mixed-Mode Signal Processor for Disk Drive Read Channel Applications,” IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing (1994) Jan., No. 1, New York.

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

Filter control for varying data rate communication channels does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Filter control for varying data rate communication channels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filter control for varying data rate communication channels will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3900380

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