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    Magnetic recording and reproducing system with tape-to-head speed control
    1.
    发明授权
    Magnetic recording and reproducing system with tape-to-head speed control 失效
    磁带记录和复制系统带有带头速度控制

    公开(公告)号：US3585291A

    公开(公告)日：1971-06-15

    申请号：US3585291D

    申请日：1968-09-17

    Applicant: SONY CORP

    Inventor： YAMAKAWA KIYOSHI

    IPC: G11B15/467 ,  G11B15/473 ,  G11B19/28 ,  G11B5/52 ,  H04N5/78

    CPC classification number: G11B15/4735 ,  G11B15/4676

    Abstract: In a magnetic recording and reproducing system in which at least one rotary magnetic head records signals on a magnetic tape in tracks that are skewed or obliquely arranged, the traces of each head are aligned with the recording tracks during playback or reproducing of the recorded signals by generating a reference signal in accordance with the rotational position of the rotary head or heads, envelope-detecting the output of the head or heads, comparing the phases of the envelope-detected output and the reference signal, and, on the basis of such comparison, adjusting the relative position of the tape to the rotary head or heads.

    5.
    发明专利
    未知

    公开(公告)号：DE69130368T2

    公开(公告)日：1999-05-12

    申请号：DE69130368

    申请日：1991-08-21

    Applicant: SONY CORP

    Inventor： MIYAUCHI TEIICHI ,  YAMAKAWA KIYOSHI ,  MATSUZONO ATSUSHI

    IPC: G11B5/00 ,  G11B5/245 ,  G11B5/31 ,  G11B5/39 ,  G11B5/127 ,  G11B5/23

    Abstract: Head wherein an axis of easy magnetization in the vicinity of a magnetic gap (g) of a magnetic yoke (37) is forcibly made coincident with the direction of a track width by a magnetic field due to current flowing in a conductor layer (1). Accordingly, even though the track width is small, a high magnetic permeability, low Barkhausen noise and linear responsiveness can be realized to thereby improve the sensitivity, output and linearity. In another aspect of the invention, a throat portion is eliminated from a thin film magnetic core forming a magnetic gap. The thin film magnetic core is configured such that a pair of magnetic members constituting the magnetic core are diverged from the magnetic gap so that a divergent angle theta , of first opposite side edges of the magnetic members, from a direction of the gap length of the magnetic gap, is set to the range of 30 DEG

    6.
    发明专利
    未知

    公开(公告)号：DE69117389T2

    公开(公告)日：1996-09-26

    申请号：DE69117389

    申请日：1991-08-21

    Applicant: SONY CORP

    Inventor： MIYAUCHI TEIICHI ,  YAMAKAWA KIYOSHI ,  MATSUZONO ATSUSHI

    IPC: G11B5/00 ,  G11B5/245 ,  G11B5/31 ,  G11B5/39 ,  G11B5/127 ,  G11B5/23

    Abstract: Head wherein an axis of easy magnetization in the vicinity of a magnetic gap (g) of a magnetic yoke (37) is forcibly made coincident with the direction of a track width by a magnetic field due to current flowing in a conductor layer (1). Accordingly, even though the track width is small, a high magnetic permeability, low Barkhausen noise and linear responsiveness can be realized to thereby improve the sensitivity, output and linearity. In another aspect of the invention, a throat portion is eliminated from a thin film magnetic core forming a magnetic gap. The thin film magnetic core is configured such that a pair of magnetic members constituting the magnetic core are diverged from the magnetic gap so that a divergent angle theta , of first opposite side edges of the magnetic members, from a direction of the gap length of the magnetic gap, is set to the range of 30 DEG

    POWER SUPPLY DEVICE FOR ELECTRIC APPARATUS
    10.
    发明专利
    POWER SUPPLY DEVICE FOR ELECTRIC APPARATUS 未知

    公开(公告)号：CA936231A

    公开(公告)日：1973-10-30

    申请号：CA120401

    申请日：1971-08-12

    Applicant: SONY CORP

    Inventor： YAMAKAWA KIYOSHI ,  SAHARA HIROSHI

    IPC: H02H7/085 ,  G05F1/14 ,  H01F29/02 ,  H01H37/76 ,  H01H85/00 ,  H01H85/46 ,  H02H7/04 ,  H02J3/00 ,  H02M5/00 ,  H04B1/16 ,  H04N5/63

    Abstract: A power supply for use with different AC line voltages, which includes a power transformer having a plurality of separate primary windings and a corresponding plurality of fuses connected thereto. The primary windings are connected to each other in several different ways to change the turns ratio of the power transformer depending upon the value of the voltage supplied thereto. Thus, a predetermined voltage is produced in the secondary winding of the transformer irrespective of the value of the supplied AC line voltage and the current flowing through each of the fuses is held substantially constant, during normal operating conditions, regardless of the manner in which the separate primary windings are connected.

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