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. 28, 2004
Filed:
Nov. 01, 2001
Samsung Electronics Co., Ltd., Kyungki-Do, KR;
Abstract
A high speed Viterbi detector for an optical disk system, includes a frequency dividing unit for generating an auxiliary clock at one-third of the main clock frequency, a branch metric calculation unit for calculating each of a plurality of branch metrics, a serial-to-parallel converting unit for outputting each of the branch metrics at the main clock frequency in units of 3 state bits, an addition/comparison/selection unit for adding the branch metrics and previously stored state metrics and for comparing the addition results to select and output the minimum of the addition results as a new state metric, and for outputting a corresponding path selection signal, at the auxiliary clock frequency, a path memory for storing the path selection signal and for outputting parallel data corresponding to the path selection signal, at the auxiliary clock frequency, and a parallel-to-serial converting unit for converting the path memory output into serial data.