Patents by Inventor Yutaka Masumoto

Yutaka Masumoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Control signal extraction in a reproducing apparatus
    Patent number: 4837639
    Abstract: A magnetic reproducing apparatus in which a synchronizing signal is read only if the signal of an erase signal at a set frequency is less than a predetermined level.
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: June 6, 1989
    Assignee: Pioneer Electronic Corporation
    Inventor: Yutaka Masumoto
  • Magnetic head system for tape player
    Patent number: 4510543
    Abstract: A magnetic head system for a tape player capable of changing tracks in association of the magnetic tape by rotating the magnetic head. The magnetic head is enclosed in a rotary member. As the rotary member rotates 180 degrees about its axis, the housing which accommodates the rotary member controls the rotation of the rotary member for optimum azimuth angle adjustment.
    Type: Grant
    Filed: October 27, 1981
    Date of Patent: April 9, 1985
    Assignee: Pioneer Electronic Corporation
    Inventors: Hiroyuki Ohta, Yutaka Masumoto
  • Magnetic head
    Patent number: 4170788
    Abstract: A magnetic head for tape recorders and the like is manufactured with cores made of alloys of elements such as Al and Fe which have relatively large potential differences. In order to avoid the galvanic effect which may be produced by segregation and impurities in the alloys, a part of the tape sliding surface is made of an element such as Zn which is lower in galvanic potential than elements forming the cores, and that part of the tape sliding surface is made electrically conductive to the cores.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: October 9, 1979
    Assignee: Pioneer Electronic Corporation
    Inventors: Komei Hashimoto, Masahiro Komatsubara, Shinji Yasuda, Yutaka Masumoto, Kazuhiko Satoh