Patents by Inventor Fumiyoshi Akiyama

Fumiyoshi Akiyama 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).

  • Image display apparatus capable of displaying personal computer signals and television signal by conversion into a signal of a higher number of pixels
    Patent number: 5838381
    Abstract: The present invention aims at providing an image display apparatus capable of displaying both a television signal and an image signal supplied from a personal computer with a high picture quality on a high definition display unit having 1024 by 768 pixels. In order to achieve this object, an image display apparatus according to the present invention includes an NTSC-VGA conversion circuit for converting a television signal to a signal having 640 by 480 pixels and corresponding to the non-interlacing VGA standard, a switch unit for selecting and outputting either the signal outputted from the NTSC-VGA conversion circuit and an inputted image signal from a personal computer, and a VGA-XGA conversion circuit for converting a number of pixels of a signal outputted from the switch unit to a number of pixels 1024 by 768 substantially equivalent to the number of the display unit.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: November 17, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Yasuhiro Kasahara, Takaaki Matono, Koichi Sudo, Makoto Kitamura, Yasuhiro Tomita, Kouichi Sugimoto, Toshihiko Matsuzawa, Fumiyoshi Akiyama
  • Television receiver
    Patent number: D342502
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: December 21, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Fukatsu, Daiji Tsuboi, Tadashi Kitajima, Ryuichirou Tanaka, Fumiyoshi Akiyama
  • Liquid crystal display rear projection television receiver
    Patent number: D431232
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: September 26, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Yoshimasa Yokoyama, Asako Katayama, Fumiyoshi Akiyama, Shouji Uchiyama, Hiroshi Suzuki, Masahiro Yaezawa