EP1642270A1 - Support de mise en memoire de l'information et procede et appareil d'enregistrement et/ou de reproduction de donnees sur et/ou a partir dudit support - Google Patents

Support de mise en memoire de l'information et procede et appareil d'enregistrement et/ou de reproduction de donnees sur et/ou a partir dudit support

Info

Publication number
EP1642270A1
EP1642270A1 EP04734166A EP04734166A EP1642270A1 EP 1642270 A1 EP1642270 A1 EP 1642270A1 EP 04734166 A EP04734166 A EP 04734166A EP 04734166 A EP04734166 A EP 04734166A EP 1642270 A1 EP1642270 A1 EP 1642270A1
Authority
EP
European Patent Office
Prior art keywords
data
information
storage medium
information storage
pits
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.)
Withdrawn
Application number
EP04734166A
Other languages
German (de)
English (en)
Other versions
EP1642270A4 (fr
Inventor
Kyung-Geun 229-1006 Sibeomdanji Woosung 16 LEE
Tae-Kyung Kim
Tatsuhiro 345-1106 Sangrok Apt. 1303 OTSUKA
Wook-Yeon Hwang
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics 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
Priority claimed from KR1020030032092A external-priority patent/KR100750111B1/ko
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP1642270A1 publication Critical patent/EP1642270A1/fr
Publication of EP1642270A4 publication Critical patent/EP1642270A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • 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
    • G11B7/0045—Recording
    • G11B7/00454—Recording involving phase-change effects
    • 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
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00718—Groove and land recording, i.e. user data recorded both in the grooves and on the lands
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G11B7/0912—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by push-pull method

Definitions

  • the present invention relates to an optical information storage medium on which tracking polarity data corresponding to the form of pits is recorded, and a method and apparatus of recording and/or reproducing data on and/or from the optical information storage medium.
  • CDs compact disks
  • DVDs digital versatile disks
  • the optical disks may also be classified as mini disks (MDs) with diameters of 65mm or less.
  • MDs mini disks
  • disks having a recording capacity of 20GB or greater are under development.
  • optical disks may be further classified as read-only disks or rewritable disks.
  • Examples of the read-only disks are CD-ROM (read only memory) and DVD-ROM.
  • Examples of rewritable disks are CD + R/RW, DVD + R/RW, and DVD-RAM (random access memory).
  • CD-R and DVD-R can perform recording only once
  • CD- RW and DVD-RW can perform recording and/or reproduction about 1000 times
  • DVD-RAM can perform recording and/or reproduction several hundreds of thousands of times.
  • data is recorded as pits on reproduction-only disks or read-only disks.
  • Snce rewritable disks are coated with a phase changing material, data is recorded thereon according to a phase change.
  • a pickup In an apparatus for recording and/or reproducing data on and/or from an optical disc, a pickup accurately follows a track on which user data has been recorded and receives a laser beam reflected from the track, thereby reading the user data.
  • a signal used when the pickup follows the track is referred to as a tracking signal.
  • the tracking signal is obtained from a photo diode having a plurality of receiving portions, which receive a laser beam and adds or subtracts signals obtained from light received by the individual receiving portions.
  • the tracking signal is shaped in an S -letter curve in which the left and right polarities are opposite to each other around its center.
  • the tracking signal has different polarities depending on the type of optical disk, that is, the physical characteristics of a recording layer, for example, the physical shape of a pit, the physical shape of a track, and the like.
  • FIGS. 1A and IB show groove tracks G and land tracks L arranged in opposite ways.
  • a tracking signal has a polarity that changes from (+) to ( - ).
  • the tracking signal has a polarity that changes from ( - ) to (+).
  • the polarity of a tracking signal is classified as a polarity changing from ( - ) to (+) or a polarity changing from (+) to ( - ).
  • a tracking signal is differently processed depending on the polarity of the tracking signal. Hence, if the polarity of a tracking signal is wrongly recognized, data may not be properly reproduced. Accordingly, when an optical disk is loaded, a conventional recording and/or reproducing apparatus recognizes the polarity of a tracking signal through trial and error and then follows a track on which user data has been recorded, based on the information about the recognized polarity. In this way, the user data is read from the optical disk. Disclosure of Invention
  • the conventional reproducing apparatus spends some time obtaining information about the polarity of a tracking signal before reading out user data. This impedes immediate reproduction of user data.
  • the polarity of a tracking signal can be changed by the physical shape of a pit.
  • the physical shape of a pit may be different depending on the type of disk.
  • F wever, in the related art extra information about the polarity of a tracking signal depending on the physical shape of a pit is not recorded on a disk, so that the reliability of data recording and/or reproduction is degraded.
  • the conventional reproducing apparatus spends some time obtaining information about the polarity of a tracking signal through trial and error, delaying recording and/or reproduction.
  • the present invention provides an optical information storage medium on which information about a tracking polarity depending on a pit shape, particularly, information about a push-pull polarity, has been recorded, and a method of recording and/or reproducing data on and/or from the optical information storage medium.
  • an information storage medium having at least one information storage layer, wherein data is recorded in the form of protruding or indented pits in the entire or partial area of the information storage medium, and information regarding the protruding or indented pits is recorded.
  • the information regarding the protruding or indented pits is push-pull polarity information.
  • the information regarding the protruding or indented pits is recorded in or in front of a frame sync.
  • the information storage medium includes a burst cutting area (BCA) and a lead-in area, one of which stores the information regarding the protruding or indented pits.
  • BCA burst cutting area
  • lead-in area one of which stores the information regarding the protruding or indented pits.
  • the protruding or indented pits may be w ⁇ bling pits.
  • data is decoded by performing an exclusive OR operation with respect to the push-pull polarity information and data reproduced from the protruding or indented pits.
  • a method of recording data on and/or reproducing data from an information storage medium having at least one information storage layer including recording data in the form of protruding or indented pits in the entire or partial area of the information storage medium and recording information regarding the protruding or indented pits.
  • This method further includes reproducing the push-pull polarity information and recording data on or reproducing data from the information storage medium by performing tracking on the basis of the reproduced push-pull polarity information.
  • tracking polarity information i.e., push-pull polarity information
  • protruding pits and indented pits is recorded so that data can be reliably recorded or reproduced without trials and errors for obtaining tracking polarity information.
  • each of the pits may have various shapes, like, indented or protruding pits.
  • FIGS. 1A and IB show different tracking polarities depending on a configuration of groove tracks and land tracks;
  • FIG. 2A shows protruding pits formed on a substrate of an information storage medium according to an embodiment the present invention;
  • FIG. 2B shows indented pits formed on the substrate of the information storage medium according to an embodiment the present invention;
  • FIG. 3A is a graph showing the amplitudes of a differential phase detection (DPD) signal and a radio frequency (RF) signal versus time in an information storage medium on which data is formed as protruding pits;
  • DPD differential phase detection
  • RF radio frequency
  • FIG. 3B is a graph showing the amplitudes of a DPD signal and an RF signal versus time in an information storage medium on which data is formed as indented pits;
  • FIG. 4A is a graph showing a push-pull signal versus time in an information storage medium on which data is formed as protruding pits;
  • FIG. 4B is a graph showing a push-pull signal versus time in an information storage medium on which data is formed as indented pits;
  • FIG. 5 shows an example in which tracking polarity data is recorded in a sync pattern on an information storage medium according to an embodiment of the present invention;
  • FIGS. 7 A and 7B show different examples of the location of the information storage medium according to an embodiment of the present invention where tracking polarity information has been recorded in a specific pattern;
  • FIGS. 7 A and 7B show different layouts of an information storage medium according to another embodiment of the present invention;
  • FIG. 8 A schematically shows a structure of an information area of a recordable information storage medium;
  • FIG. 8B schematically shows a structure of an information area of a reproduction- only information storage medium;
  • FIG. 9A shows a straight array of pits, and FIG. 9B shows a w ⁇ bling array of pits;
  • FIG. 10 shows an example in which tracking polarity information has been recorded on an information storage medium according to another embodiment of the present invention
  • FIGS. 11 A and 1 IB are views illustrating a decoding method based on an exclusive OR (XOR) operation of tracking polarity data and data that is detected from a data frame in the information storage medium according to another embodiment of the present invention
  • FIG. 12 is a flowchart illustrating a data recording and/or reproducing method according to another embodiment of the present invention .
  • FIG. 13 schematically illustrates an apparatus for recording data in and/or reproducing data from an information storage medium according to the present invention.
  • data is recorded as protruding pits 10 on a substrate 5.
  • data is recorded as indented pits 13 on the substrate 5.
  • Information about the protruding pits 10 or the indented pits 13 is recorded in the optical information storage medium
  • the information about the protruding or indented pits 10 or 13 may be tracking polarity information.
  • a tracking signal When data has been recorded in the form of the protruding pits 10, a tracking signal may have a polarity that changes from (+) to ( - ). When data has been recorded in the form of the indented pits 13, a tracking signal may have a polarity that changes from ( - ) to (+). As described above, because the polarity of a tracking signal varies depending on the shape of a pit, the tracking signal must be performed differently depending on the pit shape so that data can be normally recorded or reproduced.
  • an RLL modulation technique is based on how many bits '0' exist between two bits T.
  • RLL (m,k) represents that at least m bits '0' exist between two bits T and at most k bits '0' exists therebetween.
  • RLL (1, 7) represents that at least one bit '0' exists between two bits T and at most 7 bits '0' exist therebetween.
  • the RLL (m, k) modulation technique when m is 1, data '1010101' is recorded, and a pit with a 2T length exists between two bits T.
  • T denotes the length of a minimum mark, that is, a minimum pit.
  • data is recorded in the form of pits ranging in length from 2T to 8T and spaces.
  • FIG. 3A shows a radio frequency (RF) signal and a differential phase detection
  • FIG. 3B shows an RF signal and a DPD signal when data has been recorded in the form of the indented pits 13. Referring to FIGS. 3A and 3B, the DPD signal does not depend on the shape of a pit.
  • FIG. 4A shows a push-pull signal when data has been recorded in the form of the protruding pits 10
  • FIG. 4B shows a push-pull signal when data has been recorded in the form of the indented pits 13.
  • the push-pull signal depends on the shape of a pit.
  • the information about the tracking polarity may be information about the polarity of a push-pull signal.
  • an optical information storage medium When recording information about a tracking polarity, as shown in FIG. 5, an optical information storage medium according to an embodiment of the present inv ention includes a plurality of data frames 15, and information about a tracking polarity, that is, push-pull polarity information.
  • the push-pull polarity information can be recorded in a sync pattern on a frame sync 14 included in front of an area including a predetermined number of data frames 15.
  • the sync pattern may be a pattern not used as a user data pattern or a pattern of specific bits. An example of the sync pattern is shown in FIG. 5.
  • the sync pattern can be formed of a repetition of identical data to represent tracking polarity information. If values T are read out consecutively, this means that data is recorded in the form of protruding pits. If values '0' are read out consecutively, this means that data is recorded in the form of indented pits.
  • tracking polarity information may be recorded in a sync pattern of a specific pattern.
  • data '010' is recorded in the frame sync 14 and represents a polarity changing from (+) to ( - ).
  • the tracking polarity information has been recorded in the frame sync 14.
  • the tracking polarity information may be recorded in a predetermined area 12 in front of the frame sync 14. As described above, the tracking polarity information may be recorded in a part of the frame sync 14 or an area other than the frame sync 14.
  • FIG. 7 A and 7B show different layouts of an information storage medium according to another embodiment of the present invention.
  • This information storage medium includes a clamping area C, a burst cutting area (BCA) area B, a lead-in area LI, a user data area U, and a lead-out area LO.
  • the clamping area C denotes an area which is pressed down by a clamping apparatus for clamping a disc.
  • Tracking polarity information may be recorded in the BCA area B.
  • Unique information about a disc such as, a serial number, a manufactured day /month/year, and the like, may also be recorded in the BCA area B.
  • the BCA area B is located between the clamping area C and the lead-in area LI.
  • Fbwever, as shown in FIG. 7B, the BCA area B may be located in front of the clamping area C.
  • tracking polarity information When tracking polarity information is recorded in the BCA area B, it can be read out before a disc is tracked after the disc is loaded on a drive and focused. Thus, a tracking servo can be efficiently implemented.
  • the tracking polarity information may also be recorded in the lead-in area LI instead of the BCA area B.
  • FIG. 8A shows a layout of a recordable information storage medium.
  • Data can be recorded in the form of pits in a part of the recordable information storage medium, for example, in a lead-in area or a lead-out area.
  • Information about the shapes of the pits that is, tracking polarity information, can be recorded in the lead-in area, preferably, in a disc-related information area.
  • FIG. 8B shows a layout of a reproduction-only information storage medium.
  • the tracking polarity information can be recorded in a disc-related information area included in a lead-in area.
  • the tracking polarity information includes push-pull polarity information.
  • the pits may be arrayed either in a straight line as shown in FIG. 9 A or in a wobbly line as shown in FIG. 9B.
  • the data recorded in the pits is reproduced using a sum channel, and tracking can be controlled using DPD or the push-pull technique. If tracking is controlled using the push-pull technique, information about a tracking polarity, that is, push-pull polarity information, is required.
  • wobbling pits When data has been recorded in the form of a wobbly line of pits (hereinafter, referred to as wobbling pits), additional information can be recorded in the wobbles themselves.
  • the data recorded in the wobbling pits is reproduced using a sum channel, and the additional information recorded in the wobbles can be reproduced using a push-pull channel.
  • Wobbling pits can be arrayed in a single pattern, which is composed of pits each having identical lengths and spaces.
  • the pits have no data, and instead the wobble may have data.
  • a push-pull channel may be used as a channel for reproducing data stored in the wobbling pits.
  • data When data is recorded in the form of wobbling pits, it can be recorded using various modulation techniques. For example, data can be recorded using at least one of a phase modulation technique, a frequency modulation technique, and an amplitude modulation technique.
  • tracking polarity information is recorded in an area in front of a predetermined data frame, and although data is recorded in different forms, the data in different forms is decoded into identical data by performing an exclusive OR (XOR) operation with respect to the tracking polarity information and data read out with the tracking polarity information.
  • the tracking polarity information may be recorded in a frame sync.
  • tracking polarity information that is, push-pull polarity information
  • data read out by using tracking polarity information can be either directly output as decoded data or output as decoded data after the polarity of the data is reversed.
  • tracking polarity information that is, push-pull polarity information
  • read-out tracking polarity information is the same as the predetermined pattern
  • data is directly decoded.
  • tracking polarity information is recorded in a predetermined pattern
  • read-out tracking polarity information is different from the predetermined pattern
  • data is decoded after its polarity is reversed.
  • the information storage medium according to the present invention is applicable to multi-layered information storage media with at least two information storage layers as well as to single-layered information storage media.
  • FIG. 12 is a flowchart illustrating a data recording and/or reproducing method according to an embodiment of the present invention.
  • an information storage medium is loaded on a disk drive.
  • an optical pickup included in the disk drive reads tracking polarity information, that is, push-pull polarity information, from the loaded information storage medium.
  • the tracking polarity information is recorded as in the embodiments described above and used as a basis on which a tracking signal is detected or data is recorded and/or reproduced.
  • a tracking signal is differently processed according to tracking polarity information. If tracking polarity information is recorded in the BCA area B, an information storage medium is first loaded on a disk drive, and then focusing control is achieved, and the tracking polarity information is read from the BCA area B before data is read from the loaded information storage medium. Thus, tracking control and information reproduction are reliable.
  • the disk drive records data on or reproduces data from a data area by performing tracking control without trials and errors on the basis of the reproduced tracking polarity information, that is, push-pull polarity information.
  • the optical pickup provides the reproduced tracking polarity information to the disk drive, and the disk drive controls the optical pickup on the basis of the received information so that data is smoothly recorded on or reproduced from the information storage medium.
  • Data can be decoded by performing an XOR operation with respect to tracking polarity data and data reproduced from pits. Thus, data can be decoded regardless of a tracking polarity.
  • Data reproduced on the basis of the tracking polarity information may be either directly output as decoded data or output as decoded data after its polarity is reversed.
  • tracking polarity information is recorded in a predetermined pattern, and read-out tracking polarity information is the same as the predetermined pattern, data is directly decoded.
  • tracking polarity information is recorded in a predetermined pattern, and read-out tracking polarity information is different from the predetermined pattern, data is decoded after its polarity is reversed.
  • FIG. 13 schematically illustrates an apparatus for recording data in and/or reproducing data from an information storage medium according to the present invention.
  • the apparatus includes a pickup 50, a recording/reproducing signal processor 60, and a controller 70.
  • the pickup 50 includes a laser diode 51 for radiating light, a collimating lens 52 for collimating the light emitted by the laser diode 51, a beam splitter 54 for changing a path of incident light, and an objective lens 56 for focusing light passed through the beam splitter 54 on an information storage medium D.
  • [74] light reflected by the information storage medium D is reflected by the beam splitter 54 and received by a photodetector, for example, a 4-divisional photodetector 57.
  • the light incident upon the 4-divisional photodetector 57 is converted into an electrical signal while passing through an operational circuit 58.
  • An RF signal that is, a sum signal is output via a first channel Chi and a differential signal used in a push- pull technique via a second channel Ch 2.
  • the controller 70 controls the pickup 50 to project a beam onto the information storage medium D and reads out a signal into which a beam reflected by the information storage medium D is converted by the signal processor 60. More specifically, the beam reflected by the information storage medium D is applied to the photodetector 57 via the objective lens 56 and the beam splitter 54. The beam incident upon the photodetector 57 is converted into an electrical signal by the operational circuit 58, and the electrical signal is output as an RF signal.
  • the signal processor 60 processes a data signal according to tracking polarity information read out from the information storage medium D. T he controller 70 controls the pickup 50 based on the data signal processed by the signal processor 60.

Abstract

L'invention concerne un support de mise en mémoire de l'information ainsi qu'un procédé et un appareil d'enregistrement et/ou de reproduction de données sur et/ou à partir dudit support. Ce support comprend un support de mise en mémoire de l'information comprenant au moins une couche de mise en mémoire de l'information. Des données sont enregistrées sous la forme de protubérances ou de dépressions dans la totalité ou dans une partie de la zone du support de mise en mémoire de l'information et l'information concernant les protubérances ou les dépressions est enregistrées. L'information concernant les protubérances ou les dépressions, c'est-à-dire, l'information de polarité différentielle, permet d'assurer un suivi continu.
EP04734166A 2003-05-20 2004-05-20 Support de mise en memoire de l'information et procede et appareil d'enregistrement et/ou de reproduction de donnees sur et/ou a partir dudit support Withdrawn EP1642270A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020030032092A KR100750111B1 (ko) 2003-05-20 2003-05-20 정보 저장매체 및 데이터의 기록 및/또는 재생 장치
US48515703P 2003-07-08 2003-07-08
PCT/KR2004/001205 WO2004105000A1 (fr) 2003-05-20 2004-05-20 Support de mise en memoire de l'information et procede et appareil d'enregistrement et/ou de reproduction de donnees sur et/ou a partir dudit support

Publications (2)

Publication Number Publication Date
EP1642270A1 true EP1642270A1 (fr) 2006-04-05
EP1642270A4 EP1642270A4 (fr) 2009-04-01

Family

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EP04734166A Withdrawn EP1642270A4 (fr) 2003-05-20 2004-05-20 Support de mise en memoire de l'information et procede et appareil d'enregistrement et/ou de reproduction de donnees sur et/ou a partir dudit support

Country Status (9)

Country Link
EP (1) EP1642270A4 (fr)
JP (1) JP4717820B2 (fr)
CA (1) CA2515489C (fr)
HK (5) HK1116578A1 (fr)
MX (1) MXPA05010451A (fr)
MY (1) MY165340A (fr)
RU (2) RU2310242C2 (fr)
SG (1) SG155064A1 (fr)
WO (1) WO2004105000A1 (fr)

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WO2008129450A1 (fr) * 2007-04-18 2008-10-30 Koninklijke Philips Electronics N.V. Système et procédé de stockage du rapport push-pull normalisé dans une partie préformatée d'un disque réinscriptible utiles pour assurer le fonctionnement continu sans à-coups d'un servomécanisme de guidage
RU2623660C2 (ru) * 2015-11-23 2017-06-28 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева - КАИ" (КНИТУ-КАИ) Способ детектирования сигналов с магнитного носителя информации, записанных rll кодами, и детектор для его осуществления

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RU2467407C2 (ru) 2012-11-20
HK1122393A1 (en) 2009-05-15
WO2004105000A1 (fr) 2004-12-02
RU2310242C2 (ru) 2007-11-10
EP1642270A4 (fr) 2009-04-01
SG155064A1 (en) 2009-09-30
HK1122394A1 (en) 2009-05-15
JP2007502510A (ja) 2007-02-08
MXPA05010451A (es) 2005-11-04
JP4717820B2 (ja) 2011-07-06
HK1087524A1 (en) 2006-10-13
HK1116578A1 (en) 2008-12-24
CA2515489C (fr) 2014-07-08
RU2005130398A (ru) 2006-01-27
RU2008118732A (ru) 2009-11-20
HK1116577A1 (en) 2008-12-24
CA2515489A1 (fr) 2004-12-02
MY165340A (en) 2018-03-21

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