Patents by Inventor Masahiro Kashiwa

Masahiro Kashiwa 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).

  • Chroma-key tracking apparatus
    Patent number: 4628363
    Abstract: A chroma-key tracking apparatus capable of automatically eliminating an unwanted partial spot noise from a chroma-key signal, to enable the generation of a correct frame around a desired portion of a television picture. The apparatus includes a noise eliminating circuit which by use of counters and comparators is capable of eliminating partial spot noises whose size in the horizontal and vertical directions is smaller than a predetermined value.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: December 9, 1986
    Assignee: NEC Corporation
    Inventors: Masahiro Kashiwa, Masashi Onosato, Hiroshi Takahashi