公开(公告)号：AU2002349785A1

公开(公告)日：2003-06-17

申请号：AU2002349785

申请日：2002-12-04

Applicant: SONY CORP

Inventor： NISHI NORIAKI ,  YAMAMOTO KENJI

IPC: G11B7/24 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/125 ,  G11B7/1263 ,  G11B7/135 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1369 ,  G11B7/1372 ,  G11B7/1395

Abstract: A method and an apparatus for driving an optical recording medium for recording and/or reproducing various information for the optical recording medium, in which the output power ratio of the light source may be reduced for recording and reproduction, for optical recording media of different sorts, or for respective recording surfaces of a multilayered optical recording medium, so that optimum characteristics may be realized even with use of an easy-to-fabricate light source or a light source with a smaller light output rating. The intensity of a light beam emitted on an optical recording medium 102 by an optical head 104 is controlled by optical coupling efficiency varying elements 214, 215 depending on the sort of the optical recording medium 102, recording surfaces of a multi-layered optical recording medium, recording surfaces in the multi-layered optical recording medium or on the operating modes, in such a manner that the intensity of the light beam emitted on the optical recording medium 102 may be significantly varied without drastically increasing the output power ratio on the side light source 212.

公开(公告)号：GB2106675B

公开(公告)日：1985-06-12

申请号：GB8223753

申请日：1982-08-18

Applicant: SONY CORP

Inventor： FURUKAWA SHUNSUKE ,  YAMAMOTO KENJI

IPC: G06F3/06 ,  G06F13/10 ,  G06F13/12 ,  G06F13/00

Abstract: Apparatus for rapidly transferring data between a central processing unit (CPU) of microcomputer apparatus and floppy disc drives, includes a floppy disc controller for interfacing the floppy disc drives with the CPU and generating an interrupt request status signal indicating whether a command has been executed and a data request status signal indicating whether data is to transferred between the floppy disc controller and the CPU, the CPU generating command signals in response to these status signals; a data bus connecting the CPU to data access lines of the floppy disc controller; a bidirectional buffer interposed between the data bus and the data access lines for gating the data between the floppy disc controller and the CPU through the data bus and for gating the interrupt request status signal and data request status signal through the data bus to the CPU in response to gating signals; first and second gate circuits for gating the status signals to the buffer in response to the gating signals; a NOR gate for supplying gating signals to enable the buffer in response to the command signals; and an OR gate for supplying gating signals to enable the first and second gate circuits in response to the command signals, whereby rapid data transfer is achieved without using a direct memory access controller.

公开(公告)号：CA1186803A

公开(公告)日：1985-05-07

申请号：CA409682

申请日：1982-08-18

Applicant: SONY CORP

Inventor： FURUKAWA SHUNSUKE ,  YAMAMOTO KENJI

IPC: G06F13/10 ,  G06F3/06 ,  G06F13/12 ,  G06F13/00

Abstract: Apparatus for rapidly transferring data between a central processing unit (CPU) of microcomputer apparatus and floppy disc drives, includes a floppy disc controller for interfacing the floppy disc drives with the CPU and generating an interrupt request status signal indicating whether a command has been executed and a data request status signal indicating whether data is to transferred between the floppy disc controller and the CPU, the CPU generating command signals in response to these status signals; a data bus connecting the CPU to data access lines of the floppy disc controller; a bidirectional buffer interposed between the data bus and the data access lines for gating the data between the floppy disc controller and the CPU through the data bus and for gating the interrupt request status signal and data request status signal through the data bus to the CPU in response to gating signals; first and second gate circuits for gating the status signals to the buffer in response to the gating signals; a NOR gate for supplying gating signals to enable the buffer in response to the command signals; and an OR gate for supplying gating signals to enable the first and second gate circuits in response to the command signals, whereby rapid data transfer is achieved without using a direct memory access controller.

公开(公告)号：AU8727182A

公开(公告)日：1983-03-03

申请号：AU8727182

申请日：1982-08-18

Applicant: SONY CORP

Inventor： FURUKAWA SHUNSUKE ,  YAMAMOTO KENJI

IPC: G06F13/10 ,  G06F3/06 ,  G06F13/12 ,  G06F13/04

Abstract: Apparatus for rapidly transferring data between a central processing unit (CPU) of microcomputer apparatus and floppy disc drives, includes a floppy disc controller for interfacing the floppy disc drives with the CPU and generating an interrupt request status signal indicating whether a command has been executed and a data request status signal indicating whether data is to transferred between the floppy disc controller and the CPU, the CPU generating command signals in response to these status signals; a data bus connecting the CPU to data access lines of the floppy disc controller; a bidirectional buffer interposed between the data bus and the data access lines for gating the data between the floppy disc controller and the CPU through the data bus and for gating the interrupt request status signal and data request status signal through the data bus to the CPU in response to gating signals; first and second gate circuits for gating the status signals to the buffer in response to the gating signals; a NOR gate for supplying gating signals to enable the buffer in response to the command signals; and an OR gate for supplying gating signals to enable the first and second gate circuits in response to the command signals, whereby rapid data transfer is achieved without using a direct memory access controller.

公开(公告)号：AU3795578A

公开(公告)日：1980-01-17

申请号：AU3795578

申请日：1978-07-12

Applicant: SONY CORP

Inventor： YAMAMOTO KENJI

IPC: B60J7/10 ,  B60J7/04 ,  B60J7/08 ,  B60J7/185 ,  H03D5/00 ,  H03J3/08 ,  H03J5/00 ,  H03J5/02 ,  H03J5/26 ,  H03J7/18 ,  H04B1/16 ,  H04B1/26 ,  H04B1/28

Abstract: Radio receiving apparatus for receiving signals in plural frequency bands. Plural signal processing channels are provided, each channel being associated with a respective frequency band and each being tunable to different frequencies within its associated band to derive information signals when tuned to broadcast frequencies. Depending upon which of the signal processing channels is tuned to a broadcast frequency, a controllable switch connects that channel to an output circuit so as to supply the derived information signals thereto. A pulse generator generates intermittent pulse signals when the tuning condition of at least one of the signal processing channels is changed. These pulse signals are used to sample the tuning condition of that signal processing channel to determine if that channel is tuned to a broadcast frequency. A switch control circuit controls the switch to connect to the output circuit the particular signal processing channel which is tuned to a broadcast frequency.

公开(公告)号：DE602009000570D1

公开(公告)日：2011-02-24

申请号：DE602009000570

申请日：2009-11-05

Applicant: SONY CORP

Inventor： HAYASAKA KENGO ,  YAMAMOTO KENJI ,  ICHIMURA ISAO ,  HIROTA ISAO

IPC: H01L27/146 ,  H01L27/14 ,  H04N5/225 ,  H04N5/335 ,  H04N5/369 ,  H04N5/372 ,  H04N5/374

公开(公告)号：DE69835712D1

公开(公告)日：2006-10-12

申请号：DE69835712

申请日：1998-03-06

Applicant: SONY CORP

Inventor： YAMAMOTO KENJI ,  ICHIMURA ISAO ,  MAEDA FUMISADA ,  WATANABE TOSHIO ,  SUZUKI AKIRA ,  OHSATO KIYOSHI

IPC: G11B7/135 ,  G02B7/02 ,  G02B9/06 ,  G02B13/18 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/22

Abstract: An optical pickup incorporates a two-lens system with first and second lenses (13) and (14) being arranged in the following manner: the first lens has a first surface (15) to receive a laser beam radiated from a semiconductor laser and a second surface (16) to direct the laser beam transmitted from the first surface (15) towards the second lens (14); the second lens (14) has a third surface (17) to receive the light flux transmitted from the second surface (16) and a fourth surface (18) to direct the light flux transmitted from the third surface (17) towards an optical disc placed opposite thereto; and the first and fourth surfaces (15, 18) are used as a reference during positioning. The aberrations of the optical pickup are limited within a tolerable limit without incorporating a special device for that purpose even if errors arise in thickness of component lenses of a two-lens system constituting an element of the pickup.

公开(公告)号：DE69736507D1

公开(公告)日：2006-09-28

申请号：DE69736507

申请日：1997-10-24

Applicant: SONY CORP

Inventor： YAMAMOTO KENJI ,  ICHIMURA ISAO ,  MAEDA FUMISADA ,  WATANABE TOSHIO ,  OHSATO KIYOSHI

IPC: G02B13/00 ,  G02B13/24 ,  G02B3/02 ,  G02B9/06 ,  G02B13/18 ,  G11B7/1374

Abstract: An objective lens having a doublet structure and a numerical aperture of 0.7 or more and an optical pickup apparatus having this objective lens are adapted to an optical recording medium having a high information recording density, the objective lens being structured such that at least one side is formed into a aspheric surface and the lens elements (3, 4) are made of low-diffusion glass having an Abbe's number of 40 or greater.

公开(公告)号：HK1046327A1

公开(公告)日：2003-01-03

申请号：HK02107475

申请日：2002-10-15

Applicant: SONY CORP

Inventor： YAMAMOTO KENJI ,  OSATO KIYOSHI ,  MAEDA FUMISADA

IPC: G02B7/02 ,  G02B7/08 ,  G02B13/00 ,  G11B7/09 ,  G11B7/125 ,  G11B7/135 ,  G11B7/1374 ,  G11B7/1378 ,  G11B ,  G02B

Abstract: An optical head has achromatic lenses which a blue or blue-violet laser beam from a laser diode strikes, object lenses for condensing the laser beam passing through the achromatic lenses on an optical disc, lens holders and for holding the achromatic lenses and the object lenses so that their optical axes coincide, and actuators and for moving the lens holders in the focus direction and/or tracking direction of the optical disc. The lens holders are fixed to each other and the lenses are moved as one part by the actuators.

公开(公告)号：ID20342A

公开(公告)日：1998-12-03

申请号：ID980328

申请日：1998-03-05

Applicant: SONY CORP

Inventor： YAMAMOTO KENJI ,  ICHIMURA ISAO ,  MAEDA FUMISADA ,  WATANABE TOSHIO ,  SUZUKI AKIRA ,  OHSATO KIYOSHI

IPC: G11B7/135 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/22 ,  G11B7/09

Abstract: An optical pickup incorporates a two-lens system with first and second lenses (13) and (14) being arranged in the following manner: the first lens has a first surface (15) to receive a laser beam radiated from a semiconductor laser and a second surface (16) to direct the laser beam transmitted from the first surface (15) towards the second lens (14); the second lens (14) has a third surface (17) to receive the light flux transmitted from the second surface (16) and a fourth surface (18) to direct the light flux transmitted from the third surface (17) towards an optical disc placed opposite thereto; and the first and fourth surfaces (15, 18) are used as a reference during positioning. The aberrations of the optical pickup are limited within a tolerable limit without incorporating a special device for that purpose even if errors arise in thickness of component lenses of a two-lens system constituting an element of the pickup.