TW200501060A - Prepit detect method and optical disk device for the method - Google Patents

Prepit detect method and optical disk device for the method

Info

Publication number
TW200501060A
TW200501060A TW093109005A TW93109005A TW200501060A TW 200501060 A TW200501060 A TW 200501060A TW 093109005 A TW093109005 A TW 093109005A TW 93109005 A TW93109005 A TW 93109005A TW 200501060 A TW200501060 A TW 200501060A
Authority
TW
Taiwan
Prior art keywords
prepit
detected
disk device
optical disk
binary signal
Prior art date
Application number
TW093109005A
Other languages
Chinese (zh)
Inventor
Kouichi Mino
Tatsushi Hiraki
Chikashi Inokuchi
Hideo Sakon
Original Assignee
Matsushita Electric Ind Co 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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of TW200501060A publication Critical patent/TW200501060A/en

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
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G11B7/0053—Reproducing non-user data, e.g. wobbled address, prepits, BCA

Abstract

The present invention discloses the prepit detect method and the optical disk device for the method in which the detected rate of the prepit can be increased by decreasing the error detected or the unavailable detected of the prepit under the condition of using different recording medium or optical system. In the present invention, the binary signal of the prepit is produced by converting the push pull signal including the preit signal into the binary signal with predetermined slice level, detecting the prepit by the produced prepit binary signal, determining the detected state of the prepit by using the sync code or the ECC information which buried in the detected prepit, by calculating the detected rate and controlling the feed back, the detected rate of the prepit can be increased by setting the slice level to a suitable value.
TW093109005A 2003-04-02 2004-04-01 Prepit detect method and optical disk device for the method TW200501060A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003099714 2003-04-02

Publications (1)

Publication Number Publication Date
TW200501060A true TW200501060A (en) 2005-01-01

Family

ID=33156707

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093109005A TW200501060A (en) 2003-04-02 2004-04-01 Prepit detect method and optical disk device for the method

Country Status (2)

Country Link
TW (1) TW200501060A (en)
WO (1) WO2004090877A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8755257B2 (en) 2007-10-15 2014-06-17 Marvell World Trade Ltd. Method and apparatus for detecting land pre-pits
WO2009051657A1 (en) * 2007-10-15 2009-04-23 Marvell World Trade Ltd. Method and apparatus for detecting land pre-pits

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000113463A (en) * 1998-09-30 2000-04-21 Pioneer Electronic Corp Prepit detecting device
JP3558265B2 (en) * 1998-12-14 2004-08-25 株式会社リコー Pit signal detection circuit and optical disk drive
JP3714117B2 (en) * 2000-02-21 2005-11-09 日本ビクター株式会社 Pre-pit detection device, pre-pit detection method, position and frequency signal detection circuit

Also Published As

Publication number Publication date
WO2004090877A1 (en) 2004-10-21

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