JP2005332437A5 - - Google Patents

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Publication number
JP2005332437A5
JP2005332437A5 JP2004147855A JP2004147855A JP2005332437A5 JP 2005332437 A5 JP2005332437 A5 JP 2005332437A5 JP 2004147855 A JP2004147855 A JP 2004147855A JP 2004147855 A JP2004147855 A JP 2004147855A JP 2005332437 A5 JP2005332437 A5 JP 2005332437A5
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JP
Japan
Prior art keywords
reproducing apparatus
evaluation index
reproduction signal
likelihood difference
information recording
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.)
Pending
Application number
JP2004147855A
Other languages
English (en)
Japanese (ja)
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JP2005332437A (ja
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Publication date
Application filed filed Critical
Priority to JP2004147855A priority Critical patent/JP2005332437A/ja
Priority claimed from JP2004147855A external-priority patent/JP2005332437A/ja
Priority to US11/131,194 priority patent/US20060015797A1/en
Publication of JP2005332437A publication Critical patent/JP2005332437A/ja
Publication of JP2005332437A5 publication Critical patent/JP2005332437A5/ja
Pending legal-status Critical Current

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JP2004147855A 2004-05-18 2004-05-18 再生信号評価方法及び情報記録再生装置 Pending JP2005332437A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004147855A JP2005332437A (ja) 2004-05-18 2004-05-18 再生信号評価方法及び情報記録再生装置
US11/131,194 US20060015797A1 (en) 2004-05-18 2005-05-18 Information reproducing method and information recording reproducing apparatus with maximum likelihood decoding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004147855A JP2005332437A (ja) 2004-05-18 2004-05-18 再生信号評価方法及び情報記録再生装置

Publications (2)

Publication Number Publication Date
JP2005332437A JP2005332437A (ja) 2005-12-02
JP2005332437A5 true JP2005332437A5 (https=) 2007-06-21

Family

ID=35486999

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004147855A Pending JP2005332437A (ja) 2004-05-18 2004-05-18 再生信号評価方法及び情報記録再生装置

Country Status (2)

Country Link
US (1) US20060015797A1 (https=)
JP (1) JP2005332437A (https=)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7307807B1 (en) * 2003-09-23 2007-12-11 Marvell International Ltd. Disk servo pattern writing
JP4118918B2 (ja) 2005-02-28 2008-07-16 シャープ株式会社 信号品質評価装置、情報記録再生装置、信号品質評価方法、記録条件決定方法、信号品質評価プログラム、信号品質評価プログラムを記録したコンピュータ読み取り可能な記録媒体
US7986753B1 (en) * 2006-09-18 2011-07-26 Sibeam, Inc. Modified branch metric for decoders and equalizers
KR20090091688A (ko) * 2006-12-28 2009-08-28 파나소닉 주식회사 정보 기록 매체 평가 방법, 정보 기록 매체, 정보 기록 매체의 제조 방법, 신호 처리 방법, 액세스 제어 장치
WO2009122642A1 (ja) * 2008-03-31 2009-10-08 パナソニック株式会社 再生信号品質評価装置及び方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3674160B2 (ja) * 1996-07-04 2005-07-20 ソニー株式会社 情報記録再生装置の余裕度検出装置
JP3546351B2 (ja) * 1999-12-22 2004-07-28 株式会社日立製作所 磁気ディスクまたは磁気ヘッドの検査装置
US7206351B2 (en) * 2001-05-28 2007-04-17 Sharp Kabushiki Kaisha Signal evaluation devices and signal evaluation methods, signal quality evaluation methods and reproducing devices and recording devices
US20030067998A1 (en) * 2001-07-19 2003-04-10 Matsushita Electric Industrial Co., Ltd. Method for evaluating the quality of read signal and apparatus for reading information
CN1306516C (zh) * 2001-11-09 2007-03-21 株式会社东芝 信息记录/还原系统和记录校正方法
JP4695814B2 (ja) * 2002-02-08 2011-06-08 株式会社日立グローバルストレージテクノロジーズ データ復号方法・回路及びこれを用いた情報記録再生装置

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