Method and apparatus for determining a receiver sampling...

Pulse or digital communications – Testing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S219000, C375S233000

Reexamination Certificate

active

10281992

ABSTRACT:
An apparatus for processing a received signal includes an analog-to-digital converter (ADC) configured to produce a sampled signal from a received signal using a candidate sampling phase. An adaptive filter includes adaptive filter coefficients and is configured to receive the sampled signal and converge the filter coefficients based on the candidate sampling phase. A controller includes a module for comparing the converged filter coefficients to filter coefficient thresholds, and a module for determining a largest filter coefficient among one or more excessive filter coefficients that exceed one or more corresponding filter coefficient thresholds. The apparatus is stepped through multiple candidate sampling phases. A best sampling phase is selected based on the largest filter coefficients associated with the candidate sampling phases.

REFERENCES:
patent: 3962637 (1976-06-01), Motley et al.
patent: 4539675 (1985-09-01), Fisher
patent: 4547633 (1985-10-01), Szechenyi et al.
patent: 4677647 (1987-06-01), Aoyagi
patent: 4789994 (1988-12-01), Randall et al.
patent: 4859951 (1989-08-01), Cole et al.
patent: 5099436 (1992-03-01), McCown et al.
patent: 5155742 (1992-10-01), Ariyavisitakul et al.
patent: 5166954 (1992-11-01), Grizmala et al.
patent: 5210774 (1993-05-01), Abbiate et al.
patent: 5351247 (1994-09-01), Dow et al.
patent: 5448369 (1995-09-01), Lee et al.
patent: 5481195 (1996-01-01), Meyer
patent: 5481564 (1996-01-01), Kakuishi et al.
patent: 5661668 (1997-08-01), Yemini et al.
patent: 5751766 (1998-05-01), Kletsky et al.
patent: 5872815 (1999-02-01), Strolle et al.
patent: 6055119 (2000-04-01), Lee
patent: 6061393 (2000-05-01), Tsui et al.
patent: 6160673 (2000-12-01), Izumi et al.
patent: 6226356 (2001-05-01), Brown
patent: 6233274 (2001-05-01), Tsui et al.
patent: 6278730 (2001-08-01), Tsui et al.
patent: 6385237 (2002-05-01), Tsui et al.
patent: 6385561 (2002-05-01), Soraghan et al.
patent: 6414990 (2002-07-01), Jonsson et al.
patent: 6434233 (2002-08-01), Bjarnason et al.
patent: 6448781 (2002-09-01), Frank et al.
patent: 6529549 (2003-03-01), Norrell et al.
patent: 6534996 (2003-03-01), Amrany et al.
patent: 6590930 (2003-07-01), Greiss
patent: 6650699 (2003-11-01), Tierno
patent: 6650768 (2003-11-01), Evans et al.
patent: 6661761 (2003-12-01), Hayami et al.
patent: 6674518 (2004-01-01), Asher et al.
patent: 6697768 (2004-02-01), Jones et al.
patent: 6744854 (2004-06-01), Berrier et al.
patent: 6833875 (2004-12-01), Yang et al.
patent: 6856655 (2005-02-01), Garcia
patent: 6901243 (2005-05-01), Jayaraman et al.
patent: 6934655 (2005-08-01), Jones et al.
patent: 6985521 (2006-01-01), Rezvani et al.
patent: 2002/0114383 (2002-08-01), Belge et al.
patent: 2002/0161539 (2002-10-01), Jones et al.
patent: 2002/0161542 (2002-10-01), Jones et al.
patent: 2002/0168001 (2002-11-01), Ramsey
patent: 2002/0169585 (2002-11-01), Jones et al.
patent: 2003/0018981 (2003-01-01), Ramsey
patent: 2003/0152180 (2003-08-01), Schenk
patent: 2003/0210752 (2003-11-01), Krupka
patent: 2004/0013178 (2004-01-01), Bui et al.
patent: 2004/0019443 (2004-01-01), Jones et al.
patent: 2004/0022195 (2004-02-01), Chen
patent: 2004/0032921 (2004-02-01), Bui
patent: 2004/0044489 (2004-03-01), Jones et al.
patent: 2006/0007991 (2006-01-01), Wang et al.
patent: 2006/0007992 (2006-01-01), Wang et al.
patent: 2006/0007993 (2006-01-01), Wang et al.
patent: 2006/0067239 (2006-03-01), Olinski
patent: 0 268 391 (1988-05-01), None
patent: WO 01/030013 (2002-08-01), None
Maier, F.A. and Seeger, H., “Automation of optical time-domain reflectometry measurements.”Hewlett-Packard Journal, v46, n1, p. 57(6), 4-Page Reprint, (Feb. 1995).
Navaneethan, S. et al., “Automatic Fault Location for Underground Low Voltage Distribution Networks,”IEEE Transactions On Power Delivery, vol. 16, No. 2, pp. 346-351 (Apr. 2001).
European Search Report for European Patent Appl. No. 03016209.3, 3 pages, dated Sep. 27, 2005.
Bellanger, M.G.,Adaptive Digital Filters and Signal Analysis, 1987, pp. 313-14.

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

Rate now

     

Profile ID: LFUS-PAI-O-3794527

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