JP2002319177A - 光ヘッドおよび光ディスク装置 - Google Patents

光ヘッドおよび光ディスク装置

Info

Publication number
JP2002319177A
JP2002319177A JP2001125222A JP2001125222A JP2002319177A JP 2002319177 A JP2002319177 A JP 2002319177A JP 2001125222 A JP2001125222 A JP 2001125222A JP 2001125222 A JP2001125222 A JP 2001125222A JP 2002319177 A JP2002319177 A JP 2002319177A
Authority
JP
Japan
Prior art keywords
light
light receiving
signal
optical
optical disk
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
JP2001125222A
Other languages
English (en)
Japanese (ja)
Other versions
JP2002319177A5 (enExample
Inventor
Tetsuo Ariyoshi
哲夫 有吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2001125222A priority Critical patent/JP2002319177A/ja
Publication of JP2002319177A publication Critical patent/JP2002319177A/ja
Publication of JP2002319177A5 publication Critical patent/JP2002319177A5/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP2001125222A 2001-04-24 2001-04-24 光ヘッドおよび光ディスク装置 Pending JP2002319177A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001125222A JP2002319177A (ja) 2001-04-24 2001-04-24 光ヘッドおよび光ディスク装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001125222A JP2002319177A (ja) 2001-04-24 2001-04-24 光ヘッドおよび光ディスク装置

Publications (2)

Publication Number Publication Date
JP2002319177A true JP2002319177A (ja) 2002-10-31
JP2002319177A5 JP2002319177A5 (enExample) 2005-06-23

Family

ID=18974479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001125222A Pending JP2002319177A (ja) 2001-04-24 2001-04-24 光ヘッドおよび光ディスク装置

Country Status (1)

Country Link
JP (1) JP2002319177A (enExample)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006027955A1 (ja) * 2004-09-09 2006-03-16 Matsushita Electric Industrial Co., Ltd. 光情報装置及び情報記録／再生装置
WO2006112288A1 (ja) * 2005-04-14 2006-10-26 Matsushita Electric Industrial Co., Ltd. 光ヘッド装置及び光情報処理装置
US7193955B2 (en) 2003-03-20 2007-03-20 Matsushita Electric Industrial Co., Ltd. Optical head device and optical information reproducing device
CN1331132C (zh) * 2004-05-14 2007-08-08 蒂雅克株式会社 寻轨控制装置及具备此装置的光碟装置
EP1555659A4 (en) * 2002-10-15 2008-03-26 Matsushita Electric Industrial Co Ltd MULTILAYER INFORMATION MEDIUM, PLAYING METHOD AND REPRODUCTION DEVICE THEREFOR
EP1630798A4 (en) * 2003-01-30 2008-09-24 Matsushita Electric Industrial Co Ltd OPTICAL HEAD AND DEVICE AND SYSTEM WITH SUCH OPTICAL HEAD
CN100423100C (zh) * 2004-04-15 2008-10-01 Tdk株式会社 受光元件、光学头和光记录再现装置以及光记录再现方法
JP2009289355A (ja) * 2008-05-30 2009-12-10 Asahi Glass Co Ltd 光ヘッド装置
JP2010211843A (ja) * 2009-03-09 2010-09-24 Hitachi Media Electoronics Co Ltd 光ピックアップ装置
US8189434B2 (en) 2004-04-30 2012-05-29 Sharp Kabushiki Kaisha Optical pickup unit and optical pickup device having same and information writing/reading device having same
JP2013051025A (ja) * 2012-11-15 2013-03-14 Hitachi Media Electoronics Co Ltd 光ピックアップ及び光情報記録再生装置

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1555659A4 (en) * 2002-10-15 2008-03-26 Matsushita Electric Industrial Co Ltd MULTILAYER INFORMATION MEDIUM, PLAYING METHOD AND REPRODUCTION DEVICE THEREFOR
US7518976B2 (en) 2003-01-30 2009-04-14 Panasonic Corporation Optical head with light sources of different wavelength
EP1630798A4 (en) * 2003-01-30 2008-09-24 Matsushita Electric Industrial Co Ltd OPTICAL HEAD AND DEVICE AND SYSTEM WITH SUCH OPTICAL HEAD
US7193955B2 (en) 2003-03-20 2007-03-20 Matsushita Electric Industrial Co., Ltd. Optical head device and optical information reproducing device
US7447139B2 (en) 2004-04-15 2008-11-04 Tdk Corporation Light-receiving element, optical head, optical recording/reproducing apparatus, and method of optical recording and reproduction
CN100423100C (zh) * 2004-04-15 2008-10-01 Tdk株式会社 受光元件、光学头和光记录再现装置以及光记录再现方法
US8189434B2 (en) 2004-04-30 2012-05-29 Sharp Kabushiki Kaisha Optical pickup unit and optical pickup device having same and information writing/reading device having same
CN1331132C (zh) * 2004-05-14 2007-08-08 蒂雅克株式会社 寻轨控制装置及具备此装置的光碟装置
WO2006027955A1 (ja) * 2004-09-09 2006-03-16 Matsushita Electric Industrial Co., Ltd. 光情報装置及び情報記録／再生装置
US7787347B2 (en) 2005-04-14 2010-08-31 Panasonic Corporation Optical head device and optical information processor
WO2006112288A1 (ja) * 2005-04-14 2006-10-26 Matsushita Electric Industrial Co., Ltd. 光ヘッド装置及び光情報処理装置
JP4944026B2 (ja) * 2005-04-14 2012-05-30 パナソニック株式会社 光ヘッド装置及び光情報処理装置
JP2009289355A (ja) * 2008-05-30 2009-12-10 Asahi Glass Co Ltd 光ヘッド装置
JP2010211843A (ja) * 2009-03-09 2010-09-24 Hitachi Media Electoronics Co Ltd 光ピックアップ装置
JP2013051025A (ja) * 2012-11-15 2013-03-14 Hitachi Media Electoronics Co Ltd 光ピックアップ及び光情報記録再生装置

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