WO2009004764A1 - 情報再生信号処理装置 - Google Patents

情報再生信号処理装置 Download PDF

Info

Publication number
WO2009004764A1
WO2009004764A1 PCT/JP2008/001541 JP2008001541W WO2009004764A1 WO 2009004764 A1 WO2009004764 A1 WO 2009004764A1 JP 2008001541 W JP2008001541 W JP 2008001541W WO 2009004764 A1 WO2009004764 A1 WO 2009004764A1
Authority
WO
WIPO (PCT)
Prior art keywords
phase
emphasized
phase synchronous
information
loop
Prior art date
Application number
PCT/JP2008/001541
Other languages
English (en)
French (fr)
Inventor
Noriyuki Masunari
Youichi Ogura
Original Assignee
Panasonic Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Publication of WO2009004764A1 publication Critical patent/WO2009004764A1/ja

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10305—Improvement or modification of read or write signals signal quality assessment
    • G11B20/10398—Improvement or modification of read or write signals signal quality assessment jitter, timing deviations or phase and frequency errors
    • G11B20/10425—Improvement or modification of read or write signals signal quality assessment jitter, timing deviations or phase and frequency errors by counting out-of-lock events of a PLL

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

　ディジタル情報記録装置のデータ転送レートの高速化に対応するためには、高速に動作する情報再生信号処理装置が必要となり、回路規模、消費電力の増加となる。 　記録媒体（４６）から得られた再生波形に対して、アナログ回路でフィルタリングされた再生波形を、Ａ／Ｄ変換器（４９）によってディジタル化した情報に対して、ＦＩＲフィルタ（５０）で信号周波数帯域を強調し、前記ＦＩＲフィルタ（５０）で強調された波形に対してオフセット補正器（５１）によってオフセット変動を除去した信号から、位相比較器（５２）で位相誤差量を算出し、ループフィルタ（５３）、ＶＣＯ（５４）で構成される位相同期ループ（５５）によって、位相同期状態を維持し、位相補正部（５８）によって前記位相同期ループ（５５）の残差を打ち消すような制御を行なうことによって、安定した位相同期状態を維持させながら、消費電力を低減した情報再生信号処理装置を提供する。
PCT/JP2008/001541 2007-06-29 2008-06-16 情報再生信号処理装置 WO2009004764A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007171456A JP2010211834A (ja) 2007-06-29 2007-06-29 情報再生信号処理装置
JP2007-171456 2007-06-29

Publications (1)

Publication Number Publication Date
WO2009004764A1 true WO2009004764A1 (ja) 2009-01-08

Family

ID=40225830

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/001541 WO2009004764A1 (ja) 2007-06-29 2008-06-16 情報再生信号処理装置

Country Status (2)

Country Link
JP (1) JP2010211834A (ja)
WO (1) WO2009004764A1 (ja)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111423A (ja) * 1982-12-17 1984-06-27 Toshiba Corp 同期信号再生用ｐｌｌ回路の保護装置
JPH04295672A (ja) * 1991-03-25 1992-10-20 Alpine Electron Inc 光ディスクプレーヤ
JP2002222568A (ja) * 2001-01-25 2002-08-09 Pioneer Electronic Corp 情報再生装置
JP2003085764A (ja) * 2000-10-31 2003-03-20 Matsushita Electric Ind Co Ltd 波形等化器およびｐｒｍｌ検出器
JP2004326952A (ja) * 2003-04-25 2004-11-18 Matsushita Electric Ind Co Ltd 情報記憶再生装置
JP2006344255A (ja) * 2005-06-07 2006-12-21 Hitachi Ltd 位相誤差検出回路、位相同期ループ回路及び情報再生装置
JP2007042235A (ja) * 2005-08-04 2007-02-15 Toshiba Corp デジタルデータ再生装置
WO2007060765A1 (ja) * 2005-11-28 2007-05-31 Matsushita Electric Industrial Co., Ltd. タイミング抽出装置、並びにこれを用いた情報再生装置及びｄｖｄ装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111423A (ja) * 1982-12-17 1984-06-27 Toshiba Corp 同期信号再生用ｐｌｌ回路の保護装置
JPH04295672A (ja) * 1991-03-25 1992-10-20 Alpine Electron Inc 光ディスクプレーヤ
JP2003085764A (ja) * 2000-10-31 2003-03-20 Matsushita Electric Ind Co Ltd 波形等化器およびｐｒｍｌ検出器
JP2002222568A (ja) * 2001-01-25 2002-08-09 Pioneer Electronic Corp 情報再生装置
JP2004326952A (ja) * 2003-04-25 2004-11-18 Matsushita Electric Ind Co Ltd 情報記憶再生装置
JP2006344255A (ja) * 2005-06-07 2006-12-21 Hitachi Ltd 位相誤差検出回路、位相同期ループ回路及び情報再生装置
JP2007042235A (ja) * 2005-08-04 2007-02-15 Toshiba Corp デジタルデータ再生装置
WO2007060765A1 (ja) * 2005-11-28 2007-05-31 Matsushita Electric Industrial Co., Ltd. タイミング抽出装置、並びにこれを用いた情報再生装置及びｄｖｄ装置

Also Published As

Publication number Publication date
JP2010211834A (ja) 2010-09-24

Similar Documents

Publication Publication Date Title
JP5173021B2 (ja) データ検出器フィードバックループにおいて遅延を軽減するためのシステム及び方法
JP5524968B2 (ja) 磁気記憶装置における低周波損失を低減するためのシステムおよび方法
US7471340B1 (en) Video quality adaptive variable-rate buffering method and system for stabilizing a sampled video signal
US20080232531A1 (en) Multi-Channel Timing Recovery System
WO2009060763A1 (ja) クロックデータ復元装置
TW200644402A (en) Jitter detection device
TW200630970A (en) Digital data reproducing apparatus and method
US6775338B1 (en) Digital servo channel for recording apparatus
JPH08147887A (ja) 復号回路および再生装置
JP4016143B2 (ja) 再生信号波形処理装置及び再生信号波形処理方法
EP0859362A3 (en) A data decoding apparatus
TW200509080A (en) Regenerated signal processor, and optical disk regenerator equipped with the processor
JPH0362753A (ja) データ処理装置
WO2009004764A1 (ja) 情報再生信号処理装置
JP4837778B2 (ja) 再生信号処理装置及び映像表示装置
US7345839B2 (en) Signal processing in a disc drive
JP4055577B2 (ja) クロック信号再生ｐｌｌ回路
WO2007060765A1 (ja) タイミング抽出装置、並びにこれを用いた情報再生装置及びｄｖｄ装置
US9608597B2 (en) Digital interpolator and method of interpolating
TW200604537A (en) Circuit for detecting phase error and generating control signal and pll using the same
US20070250556A1 (en) Read channel operable to calibrate a coefficient of a filter, such as an FIR filter, disposed before an interpolated-timing-recovery circuit, and related integrated circuit, system, and method
EP3809597A1 (en) Asynchronous sampling architecture and chip
JP2009116917A (ja) 再生装置
TW200633548A (en) Digital processing system and method for tracking subcarrier included in video signal
US20100172629A1 (en) Reproduction signal processing device and video display device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08764136

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08764136

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP