WO2009001521A1 - 信号処理装置 - Google Patents

信号処理装置 Download PDF

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Publication number
WO2009001521A1
WO2009001521A1 PCT/JP2008/001540 JP2008001540W WO2009001521A1 WO 2009001521 A1 WO2009001521 A1 WO 2009001521A1 JP 2008001540 W JP2008001540 W JP 2008001540W WO 2009001521 A1 WO2009001521 A1 WO 2009001521A1
Authority
WO
WIPO (PCT)
Prior art keywords
offset
signal
processing device
signal processing
abrupt
Prior art date
Application number
PCT/JP2008/001540
Other languages
English (en)
French (fr)
Inventor
Rie Kaihara
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
Priority to JP2009520306A priority Critical patent/JPWO2009001521A1/ja
Priority to US12/666,722 priority patent/US8022847B2/en
Priority to CN200880021588A priority patent/CN101689387A/zh
Publication of WO2009001521A1 publication Critical patent/WO2009001521A1/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
    • G11B20/10018—Improvement or modification of read or write signals analog processing for digital recording or reproduction
    • G11B20/10027—Improvement or modification of read or write signals analog processing for digital recording or reproduction adjusting the signal strength during recording or reproduction, e.g. variable gain amplifiers
    • 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
    • G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
    • 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
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10203—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter baseline correction
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/216—Rewritable discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • G11B2220/2575—DVD-RAMs

Abstract

　ＤＶＤ－ＲＡＭフォーマットのように、ディスクから読み取った信号に急激なＤＣレベル差があるような場合にでも、低コストを図り且つ、ＤＣレベルを遮断し、適正なＡ／Ｄ入力レベルに引き込むことが可能な信号処理装置を得ることを目的としている。 　第１のオフセット部１でデータ部とＣＡＰＡ部の急激なＤＣレベル差を吸収し、第２のオフセット部２でディスク製造段階のばらつき等により発生するアシンメトリを補正する。また、制御部７において、上記二つのオフセット部を排他的に動作させる制御信号を生成し、双方のオフセット部を制御する。
PCT/JP2008/001540 2007-06-27 2008-06-16 信号処理装置 WO2009001521A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2009520306A JPWO2009001521A1 (ja) 2007-06-27 2008-06-16 信号処理装置
US12/666,722 US8022847B2 (en) 2007-06-27 2008-06-16 Signal processing device
CN200880021588A CN101689387A (zh) 2007-06-27 2008-06-16 信号处理装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-168445 2007-06-27
JP2007168445 2007-06-27

Publications (1)

Publication Number Publication Date
WO2009001521A1 true WO2009001521A1 (ja) 2008-12-31

Family

ID=40185348

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/001540 WO2009001521A1 (ja) 2007-06-27 2008-06-16 信号処理装置

Country Status (5)

Country Link
US (1) US8022847B2 (ja)
JP (1) JPWO2009001521A1 (ja)
KR (1) KR20100028655A (ja)
CN (1) CN101689387A (ja)
WO (1) WO2009001521A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106405199A (zh) * 2016-08-19 2017-02-15 魏其萃 信号纹波峰值谷值的动态检测方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9083889B2 (en) * 2010-02-28 2015-07-14 Himax Imaging, Inc. Signal processing circuit capable of selectively adjusting gain factor of sample-and-hold circuit and signal processing method thereof
KR20120121779A (ko) * 2011-04-27 2012-11-06 삼성전기주식회사 자기 검출 회로의 오프셋 보상 장치 및 그 방법
JP2013093085A (ja) * 2011-10-27 2013-05-16 Renesas Electronics Corp ヘッダ領域判定回路、光ディスク装置、及びヘッダ領域判定方法
US9118295B2 (en) * 2012-03-15 2015-08-25 Integrated Device Technology, Inc. Systems and methods for adaptive equalization control for high-speed wireline communications
US9648322B2 (en) 2012-07-10 2017-05-09 Qualcomm Incorporated Coding random access pictures for video coding
US9083232B1 (en) * 2014-01-23 2015-07-14 Texas Instruments Incorporated Input offset control
KR101706585B1 (ko) * 2015-10-07 2017-02-15 울산과학기술원 온도 보상을 구비한 차량용 이더넷 통신 이퀄라이저 및 그 제어 방법
JP2017126833A (ja) * 2016-01-12 2017-07-20 株式会社リコー 光電変換素子、画像読取装置、画像形成装置及び画像読取方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1011899A (ja) * 1996-06-27 1998-01-16 Canon Inc デジタル信号処理装置
JP2000082259A (ja) * 1997-12-15 2000-03-21 Matsushita Electric Ind Co Ltd 光ディスクの信号処理方法および光ディスク装置
WO2003077248A1 (fr) * 2002-03-11 2003-09-18 Matsushita Electric Industrial Co., Ltd. Appareil de traitement de signal et procede de traitement de signal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW408307B (en) 1997-12-15 2000-10-11 Matsushita Electric Ind Co Ltd Method of processing optical signal and optical disk apparatus
US6195230B1 (en) * 1998-04-27 2001-02-27 Intel Corporation Disk head assembly with multiple read and/or write transducers for improved performance
JP3963591B2 (ja) * 1998-09-18 2007-08-22 パイオニア株式会社 トラッキングエラー信号補正回路およびトラッキングエラー信号補正方法
JP3866428B2 (ja) 1998-12-11 2007-01-10 株式会社東芝 光ディスク装置
TWI226606B (en) * 2002-03-13 2005-01-11 Via Tech Inc Method for detecting AC signal and method for detecting DC level of AC signal
US7215631B2 (en) * 2002-12-27 2007-05-08 Matsushita Electric Industrial Co., Ltd. Signal processing device and signal processing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1011899A (ja) * 1996-06-27 1998-01-16 Canon Inc デジタル信号処理装置
JP2000082259A (ja) * 1997-12-15 2000-03-21 Matsushita Electric Ind Co Ltd 光ディスクの信号処理方法および光ディスク装置
WO2003077248A1 (fr) * 2002-03-11 2003-09-18 Matsushita Electric Industrial Co., Ltd. Appareil de traitement de signal et procede de traitement de signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106405199A (zh) * 2016-08-19 2017-02-15 魏其萃 信号纹波峰值谷值的动态检测方法

Also Published As

Publication number Publication date
US8022847B2 (en) 2011-09-20
CN101689387A (zh) 2010-03-31
JPWO2009001521A1 (ja) 2010-08-26
US20100188275A1 (en) 2010-07-29
KR20100028655A (ko) 2010-03-12

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