Patents by Inventor Takashi Aizawa

Takashi Aizawa 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: 5680558
    Abstract: There are disclosed a method and system for managing a file that allows an operator to easily select, specify, and manage a multimedia file (including audio data, text, still image, moving image, etc.) via a display screen. The type of a file is identified. If the file is an audio data file, then an icon is generated with an image representing an amplitude waveform or a frequency distribution waveform of the audio data, or, the icon is generated with an image including a color or a pattern preassigned to the frequency distribution or both. If the file is a text file, then an icon is generated with an image representing an arbitrary area of an arbitrary page of the text file. If the file is a still image file, then an icon is generated with an image obtained by reducing an arbitrary area of the still image. If the file is a moving image file, then an icon is generated with an image obtained by reducing an arbitrary area of an arbitrary scene of the moving image.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: October 21, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Hatanaka, Hideo Takiguchi, Takashi Aizawa, Fumiaki Takahashi, Akira Mamiya, Kenji Hatori