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    23.
    发明专利
    未知

    公开(公告)号：FR2460074B1

    公开(公告)日：1986-01-31

    申请号：FR8013785

    申请日：1980-06-20

    Applicant: SONY CORP

    Inventor： SHICHIJO HAJIME ,  YAMAMOTO KENJI ,  NAKAZAWA KENICHI

    IPC: H03J5/02 ,  H04B1/16 ,  H03J1/22

    Abstract: A presettable tuning apparatus includes a digital tuner; a source of digital signals representing radio frequencies to which the tuning apparatus is respectively tuned; an addressable memory having a plurality of sequentially addressable storage locations therein for storing selected ones of the digital signals; write-in circuitry for selectively writing the digital signals from the source into selected ones of the storage locations in the memory; a comparator circuit for comparing the digital signals stored in an adjacent pair of the sequentially addressable storage locations and providing a control signal indicating the relative values of the frequencies represented by such digital signals; and circuitry for replacing the digital signals stored in the pair of storage locations with one another when the control signal indicates that the frequency represented by the digital signal stored in the lower-address one of the pair of storage locations is higher than that represented by the signal stored in the higher-address one of the pair. The apparatus thereby automatically rearranges the particular storage locations in which the digital signals are stored so that the order of the frequencies represented thereby corresponds to the sequential order of the storage locations, notwithstanding that the digital signals can be written at random into the addressable memory.

    DIGITAL RECEIVER TUNING
    24.
    发明专利
    DIGITAL RECEIVER TUNING 未知

    公开(公告)号：AU533231B2

    公开(公告)日：1983-11-10

    申请号：AU5936680

    申请日：1980-06-18

    Applicant: SONY CORP

    Inventor： SHICHIJO HAJIME ,  YAMAMOTO KENJI ,  NAKAZAWA KENICHI

    IPC: H03J5/02 ,  H03J1/04 ,  H03J5/00

    Abstract: A presettable tuning apparatus includes a digital tuner; a source of digital signals representing radio frequencies to which the tuning apparatus is respectively tuned; an addressable memory having a plurality of sequentially addressable storage locations therein for storing selected ones of the digital signals; write-in circuitry for selectively writing the digital signals from the source into selected ones of the storage locations in the memory; a comparator circuit for comparing the digital signals stored in an adjacent pair of the sequentially addressable storage locations and providing a control signal indicating the relative values of the frequencies represented by such digital signals; and circuitry for replacing the digital signals stored in the pair of storage locations with one another when the control signal indicates that the frequency represented by the digital signal stored in the lower-address one of the pair of storage locations is higher than that represented by the signal stored in the higher-address one of the pair. The apparatus thereby automatically rearranges the particular storage locations in which the digital signals are stored so that the order of the frequencies represented thereby corresponds to the sequential order of the storage locations, notwithstanding that the digital signals can be written at random into the addressable memory.

    PRESETTABLE TUNING APPARATUS
    25.
    发明专利
    PRESETTABLE TUNING APPARATUS 未知

    公开(公告)号：CA1144669A

    公开(公告)日：1983-04-12

    申请号：CA354358

    申请日：1980-06-19

    Applicant: SONY CORP

    Inventor： SHICHIJO HAJIME ,  YAMAMOTO KENJI ,  NAKAZAWA KENICHI

    IPC: H03J5/02 ,  H04B1/16

    Abstract: A presettable tuning apparatus includes a digital tuner; a source of digital signals representing radio frequencies to which the tuning apparatus is respectively tuned; an addressable memory having a plurality of sequentially addressable storage locations therein for storing selected ones of the digital signals; writein circuitry for selectively writing the digital signals from the source into selected ones of the storage locations in the memory; a comparator circuit for comparing the digital signals stored in an adjacent pair of the sequentially addressable storage locations and providing a control signal indicating the relative values of the frequencies represented by such digital signals; and circuitry for replacing the digital signals stored in the pair of storage locations with one another when the control signal indicates that the frequency represented by the digital signal stored in the lower-address one of the pair of storage locations is higher than that represented by the signal stored in the higher-address one of the pair. The apparatus thereby automatically rearranges the particular storage locations in which the digital signals are stored so that the order of the frequencies represented thereby corresponds to the sequential order of the storage locations, notwithstanding that the digital signals can be written at random into the addressable memory.

    26.
    发明专利
    未知

    公开(公告)号：FR2460074A1

    公开(公告)日：1981-01-16

    申请号：FR8013785

    申请日：1980-06-20

    Applicant: SONY CORP

    Inventor： SHICHIJO HAJIME ,  YAMAMOTO KENJI ,  NAKAZAWA KENICHI

    IPC: H03J5/02 ,  H04B1/16 ,  H03J1/22

    Abstract: A presettable tuning apparatus includes a digital tuner; a source of digital signals representing radio frequencies to which the tuning apparatus is respectively tuned; an addressable memory having a plurality of sequentially addressable storage locations therein for storing selected ones of the digital signals; write-in circuitry for selectively writing the digital signals from the source into selected ones of the storage locations in the memory; a comparator circuit for comparing the digital signals stored in an adjacent pair of the sequentially addressable storage locations and providing a control signal indicating the relative values of the frequencies represented by such digital signals; and circuitry for replacing the digital signals stored in the pair of storage locations with one another when the control signal indicates that the frequency represented by the digital signal stored in the lower-address one of the pair of storage locations is higher than that represented by the signal stored in the higher-address one of the pair. The apparatus thereby automatically rearranges the particular storage locations in which the digital signals are stored so that the order of the frequencies represented thereby corresponds to the sequential order of the storage locations, notwithstanding that the digital signals can be written at random into the addressable memory.

    27.
    发明专利
    未知

    公开(公告)号：DE69736507T2

    公开(公告)日：2007-04-05

    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.

    30.
    发明专利
    未知

    公开(公告)号：DE69617287T2

    公开(公告)日：2002-08-08

    申请号：DE69617287

    申请日：1996-02-15

    Applicant: SONY CORP

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

    IPC: G11B7/12 ,  G11B7/135

    Abstract: An optical pickup device for condensing the light from a light source on a signal recording surface of an optical recording medium, such as an optical disc (20). A semi-spherical lens (9) of the optical pickup device has a surface (9b) facing an optical disc (20) and has a pre-set refractive index. The optical pickup device also has a slider (12) adapted for securing the lens (9) and for being in sliding contact with an optical disc (20), and a spring plate (13) adapted for thrusting and supporting the slider in sliding contact with the optical disc (20). With the optical pickup device, high density reproduction may be realized, while the tolerance value for warping during disc molding or the tolerance value for warping due to moisture absorption may be increased. In addition, the production yield and the degree of freedom in selecting the disc materials may be improved.

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