Title:
【発明の名称】ビタビ復号器
Document Type and Number:
Japanese Patent JP3342986
Kind Code:
B2
Abstract:
It is an object to provide a Viterbi decoder which can execute a high-speed decoding process. An error value between a sample value obtained by sampling a read signal read from a recording medium and each of prediction values is obtained as a branch metric value. One of the branch metric values and a first path metric value are added, thereby obtaining a first addition value. Another one of the branch metric values and a second path metric value are added, thereby obtaining a second addition value. The first and second path metric values are compared. On the basis of the comparison result, one of the first and second addition values is selected and used as a first path metric value.
Inventors:
Hideki Hayashi
Application Number:
JP14890895A
Publication Date:
November 11, 2002
Filing Date:
June 15, 1995
Export Citation:
Assignee:
Pioneer Corporation
International Classes:
G11B20/18; H03H21/00; H03M13/23; H03M13/41; H04B3/04; H04L25/08; (IPC1-7): H03M13/41; G11B20/18; H04B3/04; H04L25/08
Domestic Patent References:
| JP6252779A | ||||
| JP795098A | ||||
| JP4335260A | ||||
| JP4358364A | ||||
| JP5205395A | ||||
| JP5258477A | ||||
| JP5316083A | ||||
| JP737340A | ||||
| JP745009A | ||||
| JP637650A | ||||
| JP6282945A | ||||
| JP7226033A | ||||
| JP87495A | ||||
| JP851463A | ||||
| JP869672A | ||||
| JP8221910A |
Other References:
【文献】米国特許5835510(US,A)
【文献】国際公開96/475(WO,A1)
【文献】国際公開96/475(WO,A1)
Attorney, Agent or Firm:
Motohiko Fujimura