Patents by Inventor Takanao Ochiai

Takanao Ochiai 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).

  • Information access system and active-type contactless information storage device
    Patent number: 8035488
    Abstract: An information access system comprises a reader/writer for continually transmitting an ID request signal at a first frequency and being continuously ready to receive an RF signal at a second frequency, and an active contactless information storage device having a receiver for sensing a carrier of an RF signal at the first frequency, and a transmitter for transmitting a response signal at the second frequency when the ID request signal is received. When the receiver senses a carrier of an RF signal at the first frequency in a particular predetermined period, the receiver receives further the ID request signal, and, in response to the ID request signal, the transmitter transmits a response signal at the second frequency carrying an ID of the storage device stored. In the carrier sensing, the controller causes the receiver to be in an active state and the transmitter to be in an inactive state in the predetermined periods.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: October 11, 2011
    Assignee: Fujitsu Limited
    Inventors: Shinichi Shiotsu, Isamu Yamada, Satoshi Inano, Kouichi Yasaki, Akira Itasaki, Atsushi Sakai, Masahiko Takenaka, Takanao Ochiai
  • Information access system and active-type contactless information storage device
    Publication number: 20060276206
    Abstract: An information access system comprises a reader/writer for continually transmitting an ID request signal at a first frequency and being continuously ready to receive an RF signal at a second frequency, and an active contactless information storage device having a receiver for sensing a carrier of an RF signal at the first frequency, and a transmitter for transmitting a response signal at the second frequency when the ID request signal is received. When the receiver senses a carrier of an RF signal at the first frequency in a particular predetermined period, the receiver receives further the ID request signal, and, in response to the ID request signal, the transmitter transmits a response signal at the second frequency carrying an ID of the storage device stored. In the carrier sensing, the controller causes the receiver to be in an active state and the transmitter to be in an inactive state in the predetermined periods.
    Type: Application
    Filed: October 12, 2005
    Publication date: December 7, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Shinichi Shiotsu, Isamu Yamada, Satoshi Inano, Kouichi Yasaki, Akira Itasaki, Atsushi Sakai, Masahiko Takenaka, Takanao Ochiai
  • RFID tag and antenna arranging method
    Publication number: 20060232419
    Abstract: A non-contact integrated circuit (IC) tag accepts a plurality of frequency bands and provides sufficient performance in a compact size by freely arranging a plurality of antennas therein such that the antennas occupy a minimum area and by preventing interference between the antennas with an insulator.
    Type: Application
    Filed: November 22, 2005
    Publication date: October 19, 2006
    Applicant: Fujitsu Limited
    Inventors: Takeshi Tomioka, Takanao Ochiai