KR100298528B1 - 디지털연산회로 - Google Patents
디지털연산회로 Download PDFInfo
- Publication number
- KR100298528B1 KR100298528B1 KR1019950013735A KR19950013735A KR100298528B1 KR 100298528 B1 KR100298528 B1 KR 100298528B1 KR 1019950013735 A KR1019950013735 A KR 1019950013735A KR 19950013735 A KR19950013735 A KR 19950013735A KR 100298528 B1 KR100298528 B1 KR 100298528B1
- Authority
- KR
- South Korea
- Prior art keywords
- circuit
- subtraction
- result
- inputting
- addition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
Landscapes
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Error Detection And Correction (AREA)
- Detection And Correction Of Errors (AREA)
- Executing Machine-Instructions (AREA)
- Complex Calculations (AREA)
Abstract
Description
Claims (2)
- 제 1 신호와 제 2 신호를 입력하여 가감산 연산을 행하고, 제 1 연산 결과를 출력하는 제 1 가감산 수단; 제 1 신호와 제 3 신호를 입력하여 가감산 연산을 행하고, 제 2 연산 결과를 출력하는 제 2 가감산 수단; 상기 제 1 및 제 2 연산 결과를 입력하여 우도를 비교하고, 제 1 비교 결과를 출력하는 제 1 비교 수단; 상기 제 1 비교 결과와 상기 제 1 및 제 2 연산 결과를 입력하고, 상기 제 1 비교 결과에 따라 상기 제 1 또는 제 2 연산 결과를 선택하여 제 1 선택 결과로서 출력하는 제 1 선택 수단; 상기 선택 수단으로부터 출력된 상기 제 1 선택 결과를 입력하여 기억하는 기억 수단; 상기 기억 수단으로부터 출력된 상기 제 1 선택 결과와 제 4 신호를 입력하여 가감산 연산을 행하고, 제 3 연산 결과를 출력하는 제 3 가감산 수단; 상기 기억 수단으로부터 출력된 상기 제 1 선택 결과와 제 4 신호를 입력하여 가감산 연산을 행하고, 제 4 연산 결과를 출력하는 제 4 가감산 수단; 상기 제 3 및 제 4 연산 결과를 입력하여 우도를 비교하고, 제 2 비교 결과를 출력하는 제 2 비교 수단; 및 상기 제 2 비교 결과와 상기 제 3 및 제 4 연산 결과를 입력하고, 상기 제 2 비교 결과에 따라 상기 제 3 또는 제 4 연산 결과를 선택하여 제 2 선택 결과로서 출력하는 제 2 선택 수단에 의해 구성되는 것을 특징으로 하는 디지털 연산 회로.
- 제1항에 있어서, 상기 제 2 신호 및 제 3 신호는 패스 매트릭스를 나타내는 신호이며, 상기 제 1 신호는 브랜치 매트릭스를 나타내는 신호인 것을 특징으로 하는 디지털 연산 회로.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP94-152379 | 1994-07-04 | ||
JP15237994A JP3711290B2 (ja) | 1994-07-04 | 1994-07-04 | ディジタル演算回路 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR100298528B1 true KR100298528B1 (ko) | 2001-10-22 |
Family
ID=15539245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950013735A Expired - Lifetime KR100298528B1 (ko) | 1994-07-04 | 1995-05-29 | 디지털연산회로 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5648921A (ko) |
JP (1) | JP3711290B2 (ko) |
KR (1) | KR100298528B1 (ko) |
CA (1) | CA2153104A1 (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3501725B2 (ja) | 2000-05-12 | 2004-03-02 | 日本電気株式会社 | ビタビ復号器 |
EP1262971B1 (en) * | 2001-05-28 | 2009-07-29 | Sharp Kabushiki Kaisha | BER evaluation in an optical disk decoder by counting a number of signals after PRML having a likelihood below a threshold. |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0697843A (ja) * | 1992-09-14 | 1994-04-08 | Nippon Telegr & Teleph Corp <Ntt> | ビタビ復号回路 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2693256B2 (ja) * | 1990-05-25 | 1997-12-24 | 富士通株式会社 | 記録装置用ビタビ等化器及び記録装置 |
FR2669445B1 (fr) * | 1990-11-15 | 1993-01-08 | Alcatel Radiotelephone | Dispositif prevu pour le traitement de l'algorithme de viterbi comprenant un processeur et un operateur specialise. |
JPH06338808A (ja) * | 1993-05-28 | 1994-12-06 | Matsushita Electric Ind Co Ltd | 加算比較選択装置 |
-
1994
- 1994-07-04 JP JP15237994A patent/JP3711290B2/ja not_active Expired - Fee Related
-
1995
- 1995-05-29 KR KR1019950013735A patent/KR100298528B1/ko not_active Expired - Lifetime
- 1995-06-27 US US08/495,271 patent/US5648921A/en not_active Expired - Lifetime
- 1995-06-30 CA CA002153104A patent/CA2153104A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0697843A (ja) * | 1992-09-14 | 1994-04-08 | Nippon Telegr & Teleph Corp <Ntt> | ビタビ復号回路 |
Also Published As
Publication number | Publication date |
---|---|
US5648921A (en) | 1997-07-15 |
JP3711290B2 (ja) | 2005-11-02 |
JPH0816550A (ja) | 1996-01-19 |
CA2153104A1 (en) | 1996-01-05 |
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