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:
Nov. 07, 1995
Filed:
Apr. 18, 1994
Applicant:
Inventors:
Tzu-Wang Pan, Irvine, CA (US);
Richard Yamasaki, Torrance, CA (US);
Assignee:
Silicon Systems, Inc., Tustin, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
327 12 ; 327 74 ;
Abstract
A method and apparatus for timing acquisition of partial response class IV Signaling is described. The invention uses an acquisition logic block to determine an output sequence that best matches a preamble pattern. The logic block analyzes current quantizer output X and the two previous decisions X.sub.n and X.sub.n-1. The logic uses these values to determine the next value X.sub.n+1 so that the best match occurs. The invention is implemented with OR gates, AND gates, and D flip-flops and can operate in acquiring mode or tracking mode.