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:
Jan. 27, 1998
Filed:
Nov. 14, 1995
Min-joong Rim, Seoul, KR;
Young-uk Oh, Incheon, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A traceback-performing apparatus includes a first storing portion which receives and stores new path metric values and minimum path metric value so that the first input value is output later and the later input value is output first. A first trace logic portion which receives outputs of the first storing portion and the minimum path metric value and generates a first state which is the next state to be traced. A second storing portion which receives and stores the output of the first storing portion so that the first input value is output first and the later input value is output later. A second trace logic portion which receives the output of the second storing portion and the first state and generates a second state which is the next state to be traced. And, a third storing portion which receives and stores the second state so that the first input value is output later and the later input value is output first so as to find the decoded bits. Therefore, cost is saved in embodying the Viterbi decoder in a VLSI by reducing the required chip area, simplifying address-generation and eliminating the need for global interconnection.