The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2008
Filed:
Apr. 26, 2004
Applicants:
Thomas J. Endres, Seattle, WA (US);
Douglas Whitcomb, Kent, WA (US);
Christopher David Long, Maple Valley, WA (US);
Wonzoo Chung, Kent, WA (US);
Inventors:
Thomas J. Endres, Seattle, WA (US);
Douglas Whitcomb, Kent, WA (US);
Christopher David Long, Maple Valley, WA (US);
Wonzoo Chung, Kent, WA (US);
Assignee:
Dotcast, Inc., Kent, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 7/30 (2006.01); H03H 7/40 (2006.01); H03K 5/159 (2006.01);
U.S. Cl.
CPC ...
Abstract
A decision feedback equalizer (DFE) architecture uses feedback samples that are over-sampled with respect to the symbol rate. On-baud feedback samples are quantized with a slicer, while off-baud samples are linear, IIR samples. Both forward and feedback filters are fractionally-spaced, but adapted only at the baud instances.