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:
May. 05, 2009
Filed:
Oct. 31, 2005
In-san Jeon, Daejon, KR;
Hyuk Kim, Daejon, KR;
Kyung-soo Kim, Daejon, KR;
Ik-soo Eo, Daejon, KR;
Hee-bum Jung, Daejon, KR;
In-San Jeon, Daejon, KR;
Hyuk Kim, Daejon, KR;
Kyung-Soo Kim, Daejon, KR;
Ik-Soo Eo, Daejon, KR;
Hee-Bum Jung, Daejon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A hybrid trace back apparatus and a high-speed Viterbi decoding system having the same are disclosed. The hybrid trace back apparatus includes: a register exchanging unit for receiving survivor values of each states from a path metric calculator, and obtaining a block survival value through a register exchange operation as much as a bit length for a block trace back operation; a first storing unit for the register exchange operation; a second storing unit for storing the block survival value obtained through the register exchange operation until the block survival value is written in a block trace back memory; and a block trace back unit for outputting decoded data by performing a block trace back operation while writing a value of the second storing unit.