Patents by Inventor Masachika Oono

Masachika Oono 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).

  • Semiconductor integrated circuit for communication
    Patent number: 7333565
    Abstract: An orthogonal modulating circuit for modulating signals of two oscillation frequencies differing in phase by 90° with transmission data (I and Q) is used in common for a plurality of bands, an LC resonance circuit comprising inductances L and a capacitor C is used as the output load on the orthogonal modulating circuit instead of resistors commonly used according to the prior art, and the values of L or C constituting the resonance circuit are switched over between each other according to the transmission band.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: February 19, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Masachika Oono, Hiroaki Matsui, Koichi Yahagi
  • Semiconductor integrated circuit for communication
    Publication number: 20050014476
    Abstract: An orthogonal modulating circuit for modulating signals of two oscillation frequencies differing in phase by 90° with transmission data (I and Q) is used in common for a plurality of bands, an LC resonance circuit comprising inductances L and a capacitor C is used as the output load on the orthogonal modulating circuit instead of resistors commonly used according to the prior art, and the values of L or C constituting the resonance circuit are switched over between each other according to the transmission band.
    Type: Application
    Filed: October 16, 2002
    Publication date: January 20, 2005
    Inventors: Masachika Oono, Hiroaki Matsui, Koichi Yahagi