公开(公告)号：JPH10199122A

公开(公告)日：1998-07-31

申请号：JP1477697

申请日：1997-01-10

Applicant: SONY CORP

Inventor： KUMAGAI EIJI

IPC: G11B19/12 ,  G11B7/00 ,  G11B7/004

Abstract: PROBLEM TO BE SOLVED: To enable generating surely a mirror signal for plural kinds of optical disk by switching an operation characteristic of a mirror signal generating means by a control means in accordance with kinds of an optical disk based on a discrimination output by a disk discrimination means. SOLUTION: An optical disk is a CD, reproduction operation is performed using a CD pickup 1a, reflected light information from a disk D is converted into an electric signal by a detector 5a, and supplied to a RF block 21. Also, when an optical disk is a DVD, reproduction operation is performed using a pickup 1b, reflected light information from the disk D is converted into an electric signal by a detector 5b, and supplied to the RF block 21. A changeover switch is controlled to switch by a system controller 30 discriminating kinds of an optical disk in accordance with kinds of an optical disk based on disk discriminating signals DDPI, DDAND, DDA/ D from the RF block 21.

公开(公告)号：JPH06162739A

公开(公告)日：1994-06-10

申请号：JP30519892

申请日：1992-11-16

Applicant: SONY CORP

Inventor： KUMAGAI EIJI

IPC: G11B7/007 ,  G11B19/247 ,  G11B19/28 ,  G11B27/10

Abstract: PURPOSE:To eliminate the need of a recording frequency search of address signals by making the recording frequencies of address signals to be recorded in an address data area constant in the device where the recording frequency of user data signals is set higher in the outer peripheral side than the inner peripheral side. CONSTITUTION:Sectors consisting of address data areas and user data areas of an optical disk 1 are divided into plural zones in the radial direction. In the address data area, address signals are beforehand recorded by a same frequency in all zones. When an objective address is decided, a controller 5 moves an optical head 6 to the vicinity of the objective address and an address detection section 9 detects the address of the track which is being scanned. Since the address signal write clock frequency is equal in all zones, it is unnecessary that a read frequency band is varied, and address signals are rapidly read.

公开(公告)号：JPH0668506A

公开(公告)日：1994-03-11

申请号：JP22293492

申请日：1992-08-21

Applicant: SONY CORP

Inventor： KUMAGAI EIJI

IPC: G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/095 ,  G11B19/12

Abstract: PURPOSE:To recognize and reproduce an optical disk of a different track pitch automatically. CONSTITUTION:A laser diode in an optical block 5 irradiates a laser beam to a track pitch identification information index part formed on an optical disk 1 or 2. Furthermore, a pickup in the optical block 5 reads an RF signal such as an information signal. A signal level discrimination circuit 12 discriminates a level of an RF signal detected by an optical block 5. A CPU 13 discriminates whether a track pitch of the optical disk 1 or 2 is narrow or wide depending on a level discriminated by the signal level discrimination circuit 12 to control a changeover switch 9. The tracking control based on a tracking error detected by a tracking error detection section in the optical block 5 is implemented based on a track pitch.

公开(公告)号：JP2013021778A

公开(公告)日：2013-01-31

申请号：JP2011151742

申请日：2011-07-08

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KUMAGAI EIJI

IPC: H02J7/00 ,  B60L11/18 ,  H01M10/44 ,  H02J3/32 ,  H02J3/46 ,  H02J7/35

CPC classification number: H02J1/00 ,  B60L11/18 ,  H02J7/0063 ,  H02J2007/0067 ,  H02J2007/0095 ,  H02M1/36 ,  H02M3/04

Abstract: PROBLEM TO BE SOLVED: To start up a power supply by voltage of a battery part, for example.SOLUTION: A control device comprises: positive and negative terminals; a positive power supply line arranged between the positive electrode side of a chargeable/dischargeable power storage part and the positive terminal; a negative power supply line arranged between the negative electrode side of the power storage part and the negative terminal; a control power supply part supplying a control part with power supply voltage when being in an active state; an action control part which makes the control power supply part be active in a first state, and makes the control power supply part be inactive in a second state; and a power supply starting up part which is connected to the positive and negative power supply lines, and supplies the action control part with a first control signal. The first control signal supplied to the action control part from the power supply starting up part makes the action control part be in the first state, until predetermined time passes after predetermined timing; and a second control signal supplied to the action control part keeps the action control part in the first state, during the predetermined time.

Abstract translation: 要解决的问题：例如，通过电池部件的电压来启动电源。 解决方案：控制装置包括：正极和负极端子; 配置在可充放电蓄电部的正极侧和正极之间的正电源线; 负电源线配置在蓄电部的负极侧和负极之间; 控制电源部，其在处于活动状态时向控制部提供电源电压; 动作控制部，其使所述控制电源部在第一状态下起作用，并且使所述控制电源部处于第二状态; 以及与正电源线和负电源线连接的电源启动部，并且向动作控制部提供第一控制信号。 从电源启动部分提供给动作控制部分的第一控制信号使得动作控制部分处于第一状态，直到经过预定定时之后的预定时间; 并且在预定时间期间，提供给动作控制部的第二控制信号将动作控制部保持在第一状态。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2002100044A

公开(公告)日：2002-04-05

申请号：JP2000290917

申请日：2000-09-25

Applicant: SONY CORP

Inventor： NAGASHIMA KENJI ,  KUMAGAI EIJI ,  KUMAI SATOSHI ,  MORIZUMI TOSHIO

IPC: G11B7/0045 ,  G11B7/125 ,  G11B7/126

Abstract: PROBLEM TO BE SOLVED: To make stably controllable the write power during recording even in a pulse-train recording. SOLUTION: After writing starts, S/H 204 samples the output signal WRF' of an LPF 203 at specific time intervals corresponding to a specific pulse width part of recording data RD to find the pit level LVP. The signal WRF' has a variation part, corresponding to the multi-pulse train of a write RF signal WRF, smoothed. A controller 124 corrects the level of a target level signal STA supplied to an APC circuit 202 so that the pit level LVP becomes equal to an optimum pit level LVPr found before the writing. The pit level LVP is obtained after the variation part of the write RF signal WRF is smoothed by the LPF 203, so the pit level LVP can stably be obtained without being affected by the multi-pulse train and the write power can stably be controlled.

公开(公告)号：JP2002074855A

公开(公告)日：2002-03-15

申请号：JP2000267355

申请日：2000-09-04

Applicant: SONY CORP

Inventor： KUMAGAI EIJI ,  SHISHIDO YUKIO ,  IIDA MICHIHIKO

IPC: G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  G11B19/04 ,  G11B19/28 ,  G11B20/10 ,  G11B20/12 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30

Abstract: PROBLEM TO BE SOLVED: To provide a disk shaped recording medium and the like for which the compatibility can be judged and correct handling is performed. SOLUTION: On a disk (CD-RW (compact disk-readable and writable)), a pregroove is wobbled and the signal of an ATIP(absolute time in pregroove) is recorded and compatability information, such as, linear velocity information at the time of recording is set in the signal. In a drive 100, when a disk 101 is loaded, the linear velocity information is reproduced and it is obtained by a system controller 125. When there is a data write command from a host computer and the recording speed specified from the host computer does not correspond to the linear velocity information obtained from the disk 101, the controller 125 informs the host of recording impossibility and does not perform recording to the disk 101. As a result, it is avoided that the recording of data is performed to, for example, a disk having 8-fold speed and recording failure is prevented and, moreover, the recording film of the disk is prevented from being damaged.

公开(公告)号：JP2001297437A

公开(公告)日：2001-10-26

申请号：JP2000121082

申请日：2000-04-17

Applicant: SONY CORP

Inventor： MORIZUMI TOSHIO ,  HASEGAWA HIROYUKI ,  KUMAGAI EIJI ,  SHISHIDO YUKIO

IPC: G11B7/0045 ,  G11B7/125

Abstract: PROBLEM TO BE SOLVED: To conduct the recording operation in the optimum condition by coping with the change of ambient temperature at the time of recording. SOLUTION: When the recording operation is conducted on an optical disk 100, the temperature around an optical pickup 10 is detected by a temperature sensor 50. The recording strategy of laser beams emitted from a laser source 11 is controlled in the manner of controlling a laser driving part 30 by a control part 33 in accordance with the detected temperature.

公开(公告)号：JP2001076364A

公开(公告)日：2001-03-23

申请号：JP24841999

申请日：1999-09-02

Applicant: SONY CORP

Inventor： KUMAGAI EIJI

IPC: G11B7/0045 ,  G11B7/005 ,  G11B7/125 ,  G11B19/12

Abstract: PROBLEM TO BE SOLVED: To simply control the intensity of laser beams whose wavelengths are mutually different. SOLUTION: An optical pickup 12 emits a laser beam having a wavelength for CD(compact disk) or a laser beam having a wavelength for DVD(digital versatile disk) and also outputs a first signal corresponding to the intensity of the laser beam having the wavelength for CD or a second signal corresponding to the laser beam having the wavelength for DVD. A laser control part 111 selects either of the first signal or the second signal in accordance with a loaded recording medium and controls the intensity of the laser beam having the wavelength for CD or the intensity of the laser beam having the wavelength for DVD which are to be emitted by the pickup 12 based on either of the selected first signal or the selected second signal.

公开(公告)号：JPH09293248A

公开(公告)日：1997-11-11

申请号：JP10918196

申请日：1996-04-30

Applicant: SONY CORP

Inventor： KUMAGAI EIJI

IPC: G11B21/10 ,  G11B7/085 ,  G11B7/09

Abstract: PROBLEM TO BE SOLVED: To perform a tracking servo and a mid-point servo by a single circuit. SOLUTION: A disk 1 rotated by a spindle motor 2 is irradiated with the light from a pickup 3, and a tracking error signal is outputted based on this return light, then the displacement of a biaxial actuator is outputted by a mid- point sensor 8 as a mid-point error signal. During the movement of the pickup 3, the phase compensation coefficient for the tracking servo is changed over to the use for the mid-point servo by a DSP(digital signal processor) 5 under control of a CPU 6, and the mid-point error signal is selectively outputted by a selector 4. The phase compensation is carried out by the DSP 5 against the mid-point error signal, and a tracking coil of the biaxial actuator is driven by a driver 7 based on the mid-point error signal subjected to phase compensation, then the vibration in the radial direction is suppressed.

公开(公告)号：JPH08203199A

公开(公告)日：1996-08-09

申请号：JP1288295

申请日：1995-01-30

Applicant: SONY CORP

Inventor： KUMAGAI EIJI

IPC: G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B19/12

Abstract: PURPOSE: To minimize missing of data due to flaw on a disk. CONSTITUTION: When the reproducing speed with an optical pickup 3 is changed at plural stages or a disk 1 is changed in its kind, a cut-off frequency fC in a low band of a regenerative RF signal is changed in accordance with the reproducing speed of the optical pickup 3 or the kind of disk 1. Thus, missing of data at the variable speed reproducing time is minimized, and moreover, the reproducing state is optimized according to the kind of disk 1.