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:
Sep. 07, 2004
Filed:
Jun. 29, 2001
William G. Bliss, Thornton, CO (US);
Razmik Karabed, San Jose, CA (US);
James W. Rae, Rochester, MN (US);
Heiner Stockmanns, Santa Cruz, CA (US);
Infineon Technologies AG, Munich, DE;
Abstract
A method and apparatus for Viterbi detector state metric re-normalization. The method includes fabricating a Viterbi detector ( ) having a predetermined number of states, wherein the Viterbi detector ( ) stores a state metric value and a branch metric value for each state, and wherein the Viterbi detector ( ) implements a trellis diagram. The method includes constructing a Viterbi detector ( ) which can support a state metric value having g+h′ number of bits. The number of bits needed to represent the branch metric value is represented by (g) and the additional number of bits needed to represent the state metric value is represented by (h′). The additional number of bits (h′) is less than the additional number of bits (h) determined using the following inequality: 2 −h≧K−1, wherein K represent the constraint length of the trellis diagram.