公开(公告)号：SG111079A1

公开(公告)日：2005-05-30

申请号：SG200204860

申请日：1998-07-21

Applicant: SONY CORP

Inventor： TAMOTSU YAMAGAMI ,  TORU TAKEDA ,  SHOEI KOBAYASHI ,  KOICHIRO OGIHARA

IPC: G11B7/2407 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/013 ,  G11B7/24 ,  G11B20/12

Abstract: An optical recording medium capable of realizing high density and reliability in a recording/reproducing operation and facilitating the process which is performed by a drive apparatus is provided. The amplitude of an amount of wobbling of a track is made to be 10 nm to 15 nm and a track pitch of the track is made to be 0.74 µm to 0.82 µm. These values enable large-capacity recording to be realised and the recording/reproducing performance to be prevented from being deteriorated. As administration information, recommended information for a recording/reproducing operation at an inner peripheral position and an outer peripheral position is recorded. The size of data in a linking section is made to be the same as a sector for constituting a data block.

公开(公告)号：MY109632A

公开(公告)日：1997-03-31

申请号：MYPI19901645

申请日：1990-09-21

Applicant: SONY CORP

Inventor： TAMOTSU YAMAGAMI ,  YOICHIRO SAKO

IPC: G11B5/00 ,  G11B7/00 ,  G11B20/12 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  G11B11/10 ,  G11B11/105

Abstract: A METHOD OF RECORDING INFORMATION IS PROVIDED, IN WHICH A FIRST SIGNAL IS RECORDED ALONG THE LENGTH OF A RECORDING TRACK PREVIOUSLY FORMED ON AN A RECORDING-MEDIUM. ON THE RECORDING TRACK, A SECOND SIGNAL IS PRE-RECORDED BY OFFSETTING THE TRACK IN ITS WIDTH DIRECTION. DURING THE RECORDING OF THE FIRST SIGNAL, THE POINTS OF TRANSITION OF THE FIRST SIGNAL ARE POSITIONED SO AS TO BE SPACED APART FROM, AND THEREFORE UNAFFECTED BY, THE POINTS OF TRANSITION OF THE SECOND SIGNAL. ALSO, BY INCLUDING A CLOCK SYNCHRONISATION SIGNAL IN THE FIRST SIGNAL, PLL CAPTURE MAY BE ACHIEVED ACCURATELY IN A SHORTER TIME. IN ADDITION, THE UNIT OF PHASE SHIFT BETWEEN THE CHANNEL CLOCK OF THE FIRST SIGNAL AND THE CHANCEL CLOCK OF THE SECOND SIGNAL IS SET TO BE SHORTER THAN THE CHANNEL CLOCK BIT. A DATA RECORDING METHOD AND AN OPTICAL DATA RECORDING METHOD ARE ALSO PROVIDED, WHICH MAY BE SUITABLE APPLIED TO A MAGNETO-OPTICAL DISC OR THE LIKE. THE DATA ARE PREVIOUSLY MODULATED BY A MODULATION SYSTEM SATISFYING A PREDETERMINED RULE OF MODULATION AND INCLUDE CONNECTION BITS BETWEEN ADJACENT UNITS OF THE MODULATED DATA BY WAY OF FURTHER MODULATION. CONTROL INFORMATION IS RECORDED BY OFFSETTING THE TRACK UNITS OF THE MODULATED DATA BY WAY OF FURTHER MODULATION. CONTROL INFORMATION IS RECORDED BY OFFSETTING THE TRACK ALONG ITS WIDTH, WHILE THE POINTS OF TRANSITION OF THE TRACK ALONG ITS WIDTH COINCIDE WITH THE RECORDING REGION FOR THE CONNECTING BITS, SINCE THE LATER ARE NOT PART OF THE MAIN SIGNAL INFORMATION.

公开(公告)号：MY107081A

公开(公告)日：1995-09-30

申请号：MYPI19901442

申请日：1990-08-24

Applicant: SONY CORP

Inventor： TAMOTSU YAMAGAMI ,  YOICHIRO SAKO

IPC: G11B7/00 ,  G11B7/007 ,  G11B11/10 ,  G11B7/013 ,  G11B7/09 ,  G11B7/24 ,  G11B7/30 ,  G11B11/105 ,  G11B13/04 ,  G11B20/12 ,  G11B27/10 ,  G11B27/19 ,  G11B27/30

Abstract: AN OPTICAL RECORDING MEDIUM PROVIDED WITH BOTH A RECORDABLE AREA IN WHICH DATA CAN BE RECORDED AND A READ-ONLY AREA IN WHICH DATA HAS PREVIOUSLY BEEN RECORDED IN AN UNERASABLE MANNER. IN THE RECORDABLE AREA, A GUIDE GROOVE IS PREVIOUSLY FORMED FOR TRACKING CONTROL, AND RECORDING MAY BE PERFORMED, FOR EXAMPLE, PHOTOMAGNETICALLY, ALONG THE GUIDE GROOVE. IN THE READ-ONLY AREA, DATA IS PREVIOUSLY RECORDED BY OFFSETTING THE GROOVE OR A LAND ALONG THE TRACK IN ACCORDANCE WITH THE DATA. THIS READ-ONLY DATA MAY BE REPRODUCED BY DETECTING THE LASER LIGHT RADIATED FROM AN OPTICAL PICKUP AND REFLECTED BY THE MEDIUM BY A TWO-SEGMENT PHOTODETECTOR. ( FIG. 2 )

公开(公告)号：AU2009210404B2

公开(公告)日：2012-01-12

申请号：AU2009210404

申请日：2009-08-19

Applicant: KONINKLIJKE PHILIPS ELECTRONICS NV ,  PANASONIC CORP ,  SONY CORP

Inventor： TAMOTSU YAMAGAMI ,  MAKOTO USUI ,  MARINUS SCHEP CORNELIS ,  MITSURO MORIYA ,  SUSUMU SENSHU ,  HIDESHI ISHIHARA ,  GERRIT NIJBOER JAKOB ,  AALBERT STEK ,  SHOEI KOBAYASHI

IPC: G11B11/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18

Abstract: INFORMATION RECORDING DEVICE AND METHOD, INFORMATION REPRODUCING DEVICE AND METHOD, RECORDING MEDIUM, PROGRAM, AND DISC RECORDING MEDIUM Abstract 5 An ECC block is constituted by RS(248,216,33). Of a data length of 216 bytes (symbols), only 16 bytes are allocated to BCA data and the remaining 200 bytes are used for fixed data having a predetermined value. Using the fixed data of 200 bytes and the BCA data of 16 bytes, parities of 32 bytes (symbols) are calculated. Only the BCA data of 16 bytes and the parities of the former 16 bytes of the 32-byte parities, 1C that is, a total of 32 bytes only, are recorded in a burst cutting area of an optical disc. In decoding, error correction processing is carried out by using the fixed data of 200 bytes. The unrecorded parities of 16 bytes are processed as having been erased. Thus the error correction capability in a burst cutting area of an optical disc can be improved. 2252848 1DOC IRN: 617132D1

公开(公告)号：AU2003232638B2

公开(公告)日：2009-11-05

申请号：AU2003232638

申请日：2003-05-22

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  SONY CORP ,  PANASONIC CORP

Inventor： BORG HERMANUS JOHANNES ,  ISHIDA TAKASHI ,  TAMOTSU YAMAGAMI ,  SCHEP CORNELIS MARINUS ,  KADOWAKI SHIN-ICHI ,  KOBAYASHI SHOEI

IPC: G11B11/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/125 ,  G11B7/135 ,  G11B7/24 ,  G11B11/105

Abstract: With the disc-shaped recording medium, or the disc manufacturing method according to the present invention, for both the single-layer disc and the multi-layer disc, a recording layer L 0 , which is to be the first layer, is at the same distance, along the direction of disc thickness, from the surface of the cover layer CVLs on which falls the laser light. For the multi-layer disc, the second layer L 1 and the following layer(s) are formed at the locations which are closer to the cover layer CVLs than the first layer L 0 . Management information may be recorded by mobbling grooves, each layermay have tert areas, defect information, a replacement area. Thus, it is possible to improve compatibility, reliability and accessibility between a single-layer disc and a multi-layer disc. The spherical aberration for the recording/reproducing light may be controlled with respect to the selected layer.

公开(公告)号：MXPA02010905A

公开(公告)日：2003-04-22

申请号：MXPA02010905

申请日：2002-03-19

Applicant: SONY CORP

Inventor： TAMOTSU YAMAGAMI

IPC: G11B7/0045 ,  G11B20/12 ,  G11B7/005 ,  G11B7/007 ,  G11B7/26 ,  G11B20/14 ,  G11B20/18 ,  G11B27/19 ,  G11B27/24

Abstract: En la etapa S1, el generador de direccion genera la informacion de direccion compuesta de una senal de sincronizacion la cual es grabada sobre un disco optico, los datos de direccion y un codigo de correccion de error para los datos de direccion, los precodifica y suministra hacia un modulador. Al mismo tiempo, un generador de senal portadora genera una senal portadora que va a transportar la informacion de direccion, y la suministra al modulador. En la etapa S2, el modulador hace la modulacion MSK de la senal portadora suministrada desde el generador de senal portadora en base a la informacion de direccion precodificada suministrada desde el generador de direccion, y suministra una senal de modulacion MSK resultante hacia una unidad de oscilacion. En la etapa S3, la unidad de oscilacion forma, sobre el disco optico, una ranura espiral oscilada de manera adaptable para la senal de modulacion MSK suministrada desde el modulador: En este disco optico, puede accesarse rapida y precisamente una direccion determinada.

公开(公告)号：HK1067767A1

公开(公告)日：2005-04-15

申请号：HK04109020

申请日：2004-11-15

Applicant: SONY CORP ,  MATSUSHITA ELECTRIC IND CO LTD

Inventor： SHOEI KOBAYASHI ,  SUSUMU SENSHU ,  TAMOTSU YAMAGAMI ,  MAKOTO USUI ,  HIDESHI ISHIHARA ,  MITSUROU MORIYA ,  MARINUS SCHEP CORNELIS ,  GERRIT NIJBOER JAKOB ,  AALBERT STEK

IPC: G11B20060101 ,  G11B11/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18

Abstract: An ECC block is constituted by RS(248,216,33). Of a data length of 216 bytes (symbols), only 16 bytes are allocated to BCA data and the remaining 200 bytes are used for fixed data having a predetermined value. Using the fixed data of 200 bytes and the BCA data of 16 bytes, parities of 32 bytes (symbols) are calculated. Only the BCA data of 16 bytes and the parities of the former 16 bytes of the 32-byte parities, that is, a total of 32 bytes only, are recorded in a burst cutting area of an optical disc. In decoding, error correction processing is carried out by using the fixed data of 200 bytes. The unrecorded parities of 16 bytes are processed as having been erased. Thus, the error correction capability in a burst cutting area of an optical disc can be improved.

公开(公告)号：MY106851A

公开(公告)日：1995-08-30

申请号：MYPI19901269

申请日：1990-07-27

Applicant: SONY CORP

Inventor： TETSU WATANABE ,  TAMOTSU YAMAGAMI ,  KIETSU IWABUCHI ,  KOJI SASAKI ,  YOSHIO AOKI

IPC: G11B7/00

Abstract: A MAGNETO-OPTICAL PICKUP APPARATUS INCLUDES AN OBJECTIVE LENS FOR FOCUSING A LASER BEAM EMITTED FROM A LASER DEVICE ONTO A MAGNETO-OPTICAL RECORDING MEDIUM, DRIVING COILS, ON WHICH THE OBJECTIVE LENS IS MOUNTED, FOR DRIVING THE OBJECTIVE LENS IN FOCUSING AND TRACKING DIRECTIONS, AND A PLATE ARRANGED AT AN END PORTION OF THE DRIVING COILS BETWEEN THE OBJECTIVE LENS AND THE MAGNETO-OPTICAL RECORDING MEDIUM. THE PLATE IS FORMED WITH A COIL PATTERN FOR GENERATING A MAGNETIC FIELD TO BE APPLIED TO THE MAGNETO-OPTICAL RECORDING MEDIUM, AND CAN ALLOW A LASER BEAM TRANSMITTED THROUGH THE OBJECTIVE LENS TO PASS THERETHROUGH.@@@(FIG. 3)

公开(公告)号：PT1440437E

公开(公告)日：2006-07-31

申请号：PT02772646

申请日：2002-09-23

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  SONY CORP

Inventor： SCHEP CORNELIS M ,  AALBERT STEK ,  BAGGEN CONSTANT P M J ,  KOEN VANHOOF ,  TAMOTSU YAMAGAMI ,  SHOEI KOBAYASHI ,  NOBUYOSHI KOBAYASHI ,  SHINICHIRO IIMURA

IPC: G11B7/24 ,  G11B7/00 ,  G11B7/007 ,  G11B7/09 ,  G11B9/00 ,  G11B20/14 ,  G11B27/19 ,  G11B27/24

公开(公告)号：MY114199A

公开(公告)日：2002-08-30

申请号：MYPI19953011

申请日：1995-10-07

Applicant: SONY CORP

Inventor： MINORU TOBITA ,  SATOSHI OTSUKA ,  TAMOTSU YAMAGAMI ,  GORO FUJITA

IPC: G11B7/24

Abstract: AN OPTICAL DISC HAVING A PLURALITY OF SUBSTANTIALLY CONCENTRICALLY EXTENDING TRACKS HAS A PLURALITY OF SEGMENTS EACH INCLUDING A SERVO AREA ARS AND A DATA AREA ARD. IN THE SERVO AREA ARS, HAVING SERVO PITS REPRESENTING THE SERVO INFORMATION TO THE DISC DRIVE, THERE ARE RECORDED DISCRIMINATION MARKS SGM, ADM, STM1 AND STM2. THESE DISCRIMINATION MARKS SGM, ADM, STM1 AND STM2 AFFORD THE SEGMENT-DISCRIMINATING INFORMATION DEPENDING ON THE RECORDING POSITION IN THE SERVO AREA ARS.(FIG. 1)