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US006956508B2

(12) United States Patent ao) Patent No.: us 6,956,508 B2

Han et al. (45) Date of Patent: Oct. 18,2005

(54) DEMODULATION APPARATUS AND METHOD USING CODE TABLE THAT DECREASES COMPLEXITY

(75) Inventors: Sung-hyu Han, Seoul (KR); Ki-hyun Kim, Gyeonggi-do (KR); In-sik Park, Gyeonggi-do (KR); Yoon-woo Lee,

Gyeonggi-do (KR)

(73) Assignee: Samsung Electronics Co., Ltd.,

Suwon-si (KR)

( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.

(21) Appl. No.: 10/729,993

(22) Filed: Dec. 9, 2003

(65) Prior Publication Data

US 2004/0119616 Al Jun. 24, 2004 (30) Foreign Application Priority Data

Dec. 18, 2002 (KR) 10-2002-0081028

(51) Int. C I. II03M 7/00

(52) U.S. CI 341/50; 341/106; 341/107

(58) Field of Search 341/107, 106,

341/51, 55, 50

(56) References Cited

U.S. PATENT DOCUMENTS

5,253,053 A * 10/1993 Chu et al 375/240.23

6,177,892 Bl 1/2001 Ko

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Laura L. McPheters and Steven W. McLaughlin, "Turbo-Coded Optical Recording Channels with DVD Minimum Mark Size", IEEE Transactions on Magnetics, vol. 38, No. 1, Jan. 2002, pp. 298-302.

Anim-Appiah et al., "Turbo Codes Cascaded with High-Rate Block Codes of (O, ^-Constrained Channels", IEEE Journal on Selected Areas in Communications IEEE USA, vol. 19, No. 4, Apr. 2001.

Fan et al., "Constrained Coding Techniques For Software Iterative Decoders", Proc. of IEEE Global Telecommunications Conference 1999, vol. IB, Dec. 1999. McPheters et al., "Turbo-Coded Optical Recording Channels With DVD Minimum Mark Size", IEEE Transactions on Magnetics IEEE USA, vol. 38, No. 1, Jan. 2002.

* cited by examiner

Primary Examiner—Brian Young

(74) Attorney, Agent, or Firm—Stein, McEwen & Bui, LLP

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