Patents by Inventor Yasutaka Sasajima

Yasutaka Sasajima 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).

  • Patent number: 6038095
    Abstract: A signal reproducing apparatus realizes an auto-tracking in reproducing a plurality of recorded signals simultaneously with a simple construction. The signal reproducing apparatus is featured by comprising a plurality of reproducing circuits for reproducing a plurality of recorded signals from a plurality of tracks TQ1, TQ2, TP1, TP2, TA1 and TA2 formed on a recording medium, a plurality of amplitude level detection circuits for detecting amplitudes of at least two of output signals of the reproducing circuits and an operation circuit for generating a tracking control signal from a signal obtained by processing the amplitude level detection signals from the amplitude level detection circuits in a predetermined manner.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: March 14, 2000
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Hiroshi Ohgaki, Yasutaka Sasajima
  • Patent number: 5793557
    Abstract: A signal reproducing apparatus realizes an auto-tracking in reproducing a plurality of recorded signals simultaneously with a simple construction. The signal reproducing apparatus is featured by comprising a plurality of reproducing circuits for reproducing a plurality of recorded signals from a plurality of tracks TQ1, TQ2, TP1, TP2, TA1 and TA2 formed on a recording medium, a plurality of amplitude level detection circuits for detecting amplitudes of at least two of output signals of the reproducing circuits and an operation circuit for generating a tracking control signal from a signal obtained by processing the amplitude level detection signals from the amplitude level detection circuits in a predetermined manner.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: August 11, 1998
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Hiroshi Ohgaki, Yasutaka Sasajima
  • Patent number: 5625503
    Abstract: A magnetic recording and reproducing apparatus records a signal on a recording track of a magnetic recording medium in a recording mode and reproduces the signal from the recording track of the magnetic recording medium in a reproducing mode.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: April 29, 1997
    Assignee: Victor Company of Japan, Ltd.
    Inventor: Yasutaka Sasajima
  • Patent number: 5343336
    Abstract: A first apparatus for recording/reproducing a video signal on/from a magnetic tape has a delay for delaying a composite sync (synchronizing) signal obtained from a reproduced video signal; a signal adding circuit for adding a VITC (vertical interval time code) signal to the delayed composite sync signal; a switch circuit for switching the mode of the apparatus between recording and reproducing modes; and a timing circuit. The composite sync signal is delayed by the delay, then the VITC signal is added thereto. The VITC-added composite sync signal is recorded for a predetermined horizontal scanning line(s) by switching the switch circuit. The delay is provided to maintain reception of the composite sync signal during the recording mode and to compensate delay in the loop from the reproducing circuitry to a circuitry for recording the VITC-added composite signal. Thus, the VITC signal can be written or rewritten over the recorded magnetic tape.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: August 30, 1994
    Assignee: Victor Company of Japan, Ltd.
    Inventor: Yasutaka Sasajima