Patents by Inventor Masakatu Mizukami

Masakatu Mizukami 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).

  • Sound image display method and apparatus
    Patent number: 5619220
    Abstract: A sound image display apparatus displays a sound image waveform representing a sound image produced by a multi-channel surround audio signal in a readily visible form. The sound image display apparatus includes a scaling section which has a variable gain calculator. The calculator determines the variable gain commonly applied to the X-axis and Y-axis components for displaying a sound image on a limited space of the screen of a display.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: April 8, 1997
    Assignee: Leader Electronics Corporation
    Inventors: Hiroyuki Tomita, Toru Furuse, Masakatu Mizukami, Akihiro Masukawa
  • Method and apparatus for determining phase correlation of a stereophonic signal
    Patent number: 5272756
    Abstract: A method and apparatus used for determining phasing correlation between left-channel and right-channel signals of a stereophonic audio signal is provided. The determination of the phase correlation is facilitated by deriving centrally localized components contained in the audio signal to provide an indication representative of phase correlation existing between the left-channel and right-channel signals.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: December 21, 1993
    Assignee: Leader Electronics Corp.
    Inventors: Naojiro Tanaka, Masakatu Mizukami