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:
Oct. 24, 1995
Filed:
Jul. 02, 1993
Johannes W Bergmans, Eindhoven, NL;
Kevin D Fisher, Palo Alto, CA (US);
Ho W Wong-Lam, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
Viterbi detector for a channel having a memory length 1, where no more than two survivors with an associated difference metric are updated. In the prior-art Viterbi detector of this type the new difference metric is from the previous difference metric by use of a saturation function. If the channel parameters differ from the values assumed for the calculation of the difference metric, the performance of the prior-art detector will rapidly degrade. In the detector according to the invention the new difference metric is derived from a combination of the saturation function of the previous difference metric and a correction signal which is a measure for the channel parameter difference.