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    2.
    发明专利
    未知

    公开(公告)号：DE2705396A1

    公开(公告)日：1977-08-11

    申请号：DE2705396

    申请日：1977-02-09

    Applicant: SONY CORP

    Inventor： DOI TOSHITADA ,  IGA AKIRA ,  HAMADA OSAMU ,  FUKUDA JOJI ,  HAMADA YUICHIRO

    IPC: H04R1/42 ,  H04R23/00 ,  H03K13/01 ,  F15C5/00

    Abstract: A fluid flow control system has a fluid source and plural flow pipes connected to the fluid source. Each of the pipes has an opening of a specific area corresponding to one of the bit orders of a PCM (Pulse Code Modulated) input signal. The flow-condition of the fluid through each of the pipes is controlled by the PCM signal without changing the PCM signal to an analog signal. The summation of the outflow from each of the pipes combines to produce an analog flow output signal in response to the PCM input signal.

    DISC PLAYER
    4.
    发明专利
    DISC PLAYER 未知

    公开(公告)号：CA1182913A

    公开(公告)日：1985-02-19

    申请号：CA401631

    申请日：1982-04-26

    Applicant: SONY CORP

    Inventor： HAMADA YUICHIRO ,  FUJIIE KAZUHIKO ,  OHTAWA MASANORI ,  NONAKA CHIAKI ,  YOSHIDA TADAO ,  HANEDA YOSHIAKI

    IPC: G11B7/08 ,  G11B7/00 ,  G11B7/005 ,  G11B7/085 ,  G11B7/09 ,  G11B9/06 ,  G11B19/20 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B21/08 ,  G11B21/10 ,  G11B27/00 ,  G11B27/10 ,  G11B27/34 ,  H04N5/76

    Abstract: An apparatus for reproducing a recording medium of a disc-shape on which an audio information is recorded as a spiral or coaxial tracks is disclosed. The apparatus includes a pick-up device for reproducing the audio information from the recording medium, a driver for rotating the recording medium relative to the pick-up device, a tracking device for causing the pick-up device to trace the track of the recording medium, and a transporting device for moving the pick-up device in a direction across the track. In this case, the apparatus is characterized by a controller for controlling the pick-up device so as to trace the tracks intermittently which are apart from each other by a predetermined number of tracks so as to reproduce the audio information intermittently. BACKGROUND OF THE INVENTION Field of the Invention The present invention relates generally to an apparatus for reproducing a recording medium such as a disc and is directed more particularly to a digital audio disc player to reproduce a digital audio disc. Description of the Prior Art A manner to reproduce or playback a digital audio disc (hereinbelow simply referred to as DAD) which is called as a compact disc will be now described with reference to Fig. 1. In Fig. 1, reference numeral 1 designates a DAD which is rotated by a spindle motor 2 in the counter clockwise direction viewed from the underside of the DAD 1. A pick-up apparatus or device 3 is located to oppose the DAD 1 from its underside and moved usually from the inner periphery of the DAD 1 to its outer periphery in association

    5.
    发明专利
    未知

    公开(公告)号：AT20401T

    公开(公告)日：1986-06-15

    申请号：AT82302217

    申请日：1982-04-29

    Applicant: SONY CORP

    Inventor： HAMADA YUICHIRO ,  FUJIIE KAZUHIKO ,  OHTAWA MASANORI ,  NONAKA CHIAKI ,  YOSHIDA TADAO ,  HANEDA YOSHIAKI

    IPC: G11B7/08 ,  G11B7/00 ,  G11B7/005 ,  G11B7/085 ,  G11B7/09 ,  G11B9/06 ,  G11B19/20 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B21/08 ,  G11B21/10 ,  G11B27/00 ,  G11B27/10 ,  G11B27/34

    Abstract: An apparatus for reproducing information signals recorded in spiral or coaxial tracks of a record disc includes a pick-up device operative, upon scanning of a track of the disc while the latter is rotated, to reproduce the information signals recorded in the scanned track; a driver for rotating the record disc relative to the pick-up device; a tracking device for controlling the tracing of the tracks by the pick-up device; a transporting device for bodily moving the pick-up device in a radial direction in respect to the axis of rotation of the record disc and thereby normally determining the tracks to be scanned by the pick-up device; and a controller selectively operative for causing the pick-up device to intermittently trace nonadjacent groups of tracks so as to intermittently reproduce the information signal recorded in the nonadjacent groups of tracks, respectively.

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