公开(公告)号：EP0652548A4

公开(公告)日：1999-04-21

申请号：EP94914628

申请日：1994-05-17

Applicant: SONY CORP

Inventor： TANAKA SHOJI ,  TAKEDA TORU

IPC: G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B27/30 ,  G11B5/09

CPC classification number: G11B27/3027 ,  G11B20/10 ,  G11B20/12 ,  G11B20/1403 ,  G11B2220/20

Abstract: Clock marks for extracting clock components are made in advance at regular intervals along the track of a discoid recording medium, and clock components are extracted by detecting these clock marks at the time of rotating the discoid recording medium. Since the clock components are extracted from the definitely and periodically arranged clock marks in such a way, and interpolating clocks in sections between clock marks are generated based on the extracted clock components, highly accurate clocks can be obtained as compared with the case where clocks are extracted from reproduced codes. Therefore, the capacity of the discoid recording medium can be remarkably increased.

Abstract translation: 用于提取时钟分量的时钟标记预先沿着盘状记录介质的轨道以规则的间隔进行，并且在旋转盘状记录介质时检测这些时钟标记来提取时钟分量。 由于以这种方式从明确且周期性排列的时钟标记中提取时钟分量，并且基于所提取的时钟分量来生成在时钟标记之间的部分内插时钟，与时钟是相同的情况相比，可以获得高度准确的时钟 从转载代码中提取。 因此，可以显着提高盘状记录介质的容量。

公开(公告)号：EP0667615A4

公开(公告)日：1996-02-07

申请号：EP94924997

申请日：1994-08-24

Applicant: SONY CORP

Inventor： MASUOKA DAI ,  TAKEDA TORU

IPC: G11B21/22 ,  G11B5/54 ,  G11B21/12

CPC classification number: G11B21/12 ,  G11B5/54

Abstract: In a load/unload apparatus for loading/unloading a head slider, an actuator (3) is driven by pulses from a driving circuit (11), and when the pulse is OFF a counterelectromotive force is detected in a voice coil motor and is fed back to the driving circuit, so that the driving circuit (11) controls the position and the speed of the actuator. Accordingly, the load/unload speed can be controlled to a desired value, and collision between a head and a disk can be minimized.

公开(公告)号：MY131532A

公开(公告)日：2007-08-30

申请号：MYPI9704942

申请日：1997-10-20

Applicant: SONY CORP

Inventor： TAKEDA TORU ,  SHIMAZU AKIRA ,  YAMAMURA SHINICHI ,  SEO KATSUHIRO

IPC: G11B7/00 ,  G11B7/24 ,  G11B7/005 ,  G11B7/007 ,  G11B7/085 ,  G11B7/09

Abstract: AN OPTICAL REPRODUCING APPARATUS ACOORDING TO THE PRESENT INVENTION INCLUDES A LAND/GROOVE SWITCHING CIRCUIT FOR ALTERNATELY SWITCHING REPRADUCTION OF A RECORD MARK ON A GROOVE PORTION (G) AND A LAND PORTION (L). THIS ALLOWS A TRACKING OPERATION TO BE CARRIED OUT CONTINUOUSLY AT A CONNECTION POINT TO A SUBSEQUENT TRACK IN THE RECORDING DIRECTION WITHOUT A LASER BEAM FROM AN OPTICAL PICKUP (2) PASSING THROUGH AN END OF A SPIRAL TRACK. A RECORDING MEDIUM (1) ACCORDING TO THE PRESENT INVENTION INCLUDES A RECORDING TRACK FORMED OF A GROOVE PORTION (G) AND A LAND PORTION (L), AND A RECORD MARK USED FOR SWITCHING A TRACKING OPERATION SO THAT A LIGHT BEAM EMITTED FROM THE OPTICAL PICKUP (2) SHOULD BE IRRADIATED ALTERNATELY ON THE GROOVE PORTION (G) AND THE LAND PORTION (L). WHEN THE RECORD MARK IS DETECTED, A TRACK JUMP OPERATION IS CARRIED OUT, AND INFORMATION IS REPRADUCED FROM THE GROOVE PORTION (G) AND THE LAND PORTION (L) ALTERNATELY.FIGURE 6

公开(公告)号：DE60015899T2

公开(公告)日：2006-03-02

申请号：DE60015899

申请日：2000-09-20

Applicant: SONY CORP

Inventor： TAKEDA TORU ,  KUMAI SATOSHI ,  KONISHI AYUMI ,  SUZUKI JUNICHI

IPC: G11B7/09 ,  A61M1/00 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/12 ,  G11B27/19 ,  G11B27/30 ,  H01M2/16

Abstract: There are provided a spindle motor 12, an optical head 20, a high-pass filter 31, low-pass filters 32 and 33, an adder 38, and a PLL 39. The spindle motor 12 rotatively drives an optical disk 11. The optical head 20 irradiates a laser beam onto a target track and both tracks adjacent to the target track on the optical disk 11 and detects a return light from each track. The high-pass filter 31 filters a high-frequency component in a signal used for detecting a return light from a target track in the optical head 20. Each of the low-pass filters 32 and 33 filters a low-frequency component in a signal used for detecting a return light from each of the adjacent tracks. The adder 38 operates output signals from the high-pass filter 31, and the low-pass filters 32 and 33. Based on a signal from the adder 38, the PLL 39 generates a reference signal used as a time reference for generating recording signals. An operation by the adder 38 nullifies a cross modulation component.

公开(公告)号：MY120337A

公开(公告)日：2005-10-31

申请号：MYPI9803386

申请日：1998-07-24

Applicant: SONY CORP

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

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

Abstract: A NOVEL RECORDING MEDIUM (1) CAPABLE OF REALIZING HIGH DENSITY, RELIABILITY IN A RECORDING/REPRODUCING OPERATION AND FACILITATING THE PROCESS WHICH IS PERFORMED BY A DRIVE APPARATUS (80) IS PROVIDED. AN AMPLITUDE AMOUNT OF WOBBLING OF A TRACK IS MADE TO BE 10 NM TO 15 NM AND A TRACK PITCH OF THE TRACK IS MADE 0.74 &Mgr;M TO 0.82 &Mgr;M. THE DETERMINED VALUES ENABLE LARGE-CAPACITY RECORDING TO BE REALIZED 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 THE SECTOR FOR CONSTITUTING A DATA BLOCK. (FIGURE 1)

公开(公告)号：AT306708T

公开(公告)日：2005-10-15

申请号：AT98305833

申请日：1998-07-22

Applicant: SONY CORP

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

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：DE69422534T2

公开(公告)日：2000-07-27

申请号：DE69422534

申请日：1994-02-09

Applicant: SONY CORP

Inventor： TAKEDA TORU ,  HAYASHI NOBUHIRO ,  YAMAMOTO NORIYUKI

IPC: G11B20/10 ,  G11B5/012 ,  G11B5/48 ,  G11B5/596 ,  G11B19/02 ,  G11B19/04 ,  G11B20/12 ,  G11B20/18 ,  G11B21/00 ,  G11B21/10 ,  G11B27/30 ,  H03M13/23 ,  G11B21/08

Abstract: The information storage disc has ID storage areas (41H) formed in predetermined locations in the radial direction of the disc, the ID storage areas storing either sector or track numbers (resp. 40,41) previously and magnetically. In this setup, if the read head (30) is dislodged from the center line of a given track (10), the read head still reads the sector number correctly. The information recording and reproducing apparatus has the read head (30) and the write head (31) arranged so that they are positioned on a given intermediate track in a substantially aligned manner. With the write head positioned on a given track, the read head is dislodged from that track only by a negligible distance. This allows the read head to read sector and track numbers unfailingly from the disc.

公开(公告)号：DE69423731D1

公开(公告)日：2000-05-04

申请号：DE69423731

申请日：1994-08-24

Applicant: SONY CORP

Inventor： MASUOKA DAI ,  TAKEDA TORU

IPC: G11B21/22 ,  G11B5/54 ,  G11B21/12

Abstract: In a load/unload apparatus for loading/unloading a head slider, an actuator (3) is driven by pulses from a driving circuit (11), and when the pulse is OFF a counterelectromotive force is detected in a voice coil motor and is fed back to the driving circuit, so that the driving circuit (11) controls the position and the speed of the actuator. Accordingly, the load/unload speed can be controlled to a desired value, and collision between a head and a disk can be minimized.

公开(公告)号：ES2246523T3

公开(公告)日：2006-02-16

申请号：ES98305833

申请日：1998-07-22

Applicant: SONY CORP

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

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

Abstract: SE DESCRIBE UN MEDIO DE GRABACION CAPAZ DE CONSEGUIR ALTA DENSIDAD Y FIABILIDAD EN UNA OPERACION DE GRABACION/REPRODUCCION Y FACILITAR EL PROCESO QUE ES REALIZADO POR UN APARATO. LA AMPLITUD DE UNA CANTIDAD DE OSCILACION DE UNA PISTA SE HACE PARA QUE TENGA DE 10 MM A 15 MM Y UN PASO DE PISTA SE HACE PARA QUE SEA DE 0,74 M A 0,82 MI M. ESTOS VALORES PERMITEN QUE SEA REALIZADA LA GRABACION DE ALTA CAPACIDAD Y QUE SE IMPIDA QUE EL RENDIMIENTO GRABACION/REPRODUCCION SEA DETERIORADO. COMO INFORMACION DE ADMINISTRACION SE GRABA INFORMACION RECOMENDADA PARA LA OPERACION DE GRABACION/REPRODUCCION EN UNA POSICION PERIFERICA INTERIOR Y EN UNA POSICION PERIFERICA EXTERIOR. EL TAMAÑO DE LOS DATOS EN UNA SECCION DE ENLACE SE HACE PARA QUE SEA LA MISMA COMO UN SECTOR PARA CONSTITUIR UN BLOQUE DE DATOS.

公开(公告)号：AU771022B2

公开(公告)日：2004-03-11

申请号：AU2755502

申请日：2002-03-21

Applicant: SONY CORP

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

IPC: G11B7/007 ,  G11B7/24