Patents by Inventor Kunihide Fujii

Kunihide Fujii 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).

  • Publication number: 20060198364
    Abstract: A communication system includes a wired communication device and a communication device that can communicate with a wireless communication device and the wired communication device. The communication device includes a clock output unit and a modulator. The wired communication device includes a clock extracting unit, a signal extracting unit, and a processing unit. The communication device and the wired communication device are connected to each other by a first connecting line through which a modulated signal is sent from the communication device to the wired communication device, and a second connecting line, which is different from the first connecting line, through which a signal is sent from the wired communication device to the communication device.
    Type: Application
    Filed: March 6, 2006
    Publication date: September 7, 2006
    Inventor: Kunihide Fujii
  • Publication number: 20050111420
    Abstract: A wireless communication apparatus that communicates data with an external wireless apparatus in a wireless communication range includes a controller and a wireless communication interface device is provided. The wireless communication interface device includes a transmitting unit that transmits response request data to the external wireless apparatus, a counter that counts time for determining whether or not a time limit for waiting for the response data has elapsed, a storage unit that stores the response data, a receiving unit that receives first response data from the external wireless apparatus and that instantaneously receives second response data without an instruction from the controller when the time limit has not elapsed, a frame length checking unit that checks a frame length of the received response data, and an error detector that performs error detection on the response data.
    Type: Application
    Filed: November 11, 2004
    Publication date: May 26, 2005
    Inventor: Kunihide Fujii
  • Publication number: 20050077356
    Abstract: The present invention relates to a communication system and communication method which enable various types of near field communication, and a data processing apparatus. NFC communication apparatuses 1 to 3 have two features in that each can perform communication in two communication modes and that each can perform data transmission at a plurality of transfer rates. The two communication modes consist of a passive mode and an active mode. In the passive mode, between the NFC communication apparatuses 1 and 2, for example, the NFC communication apparatus 1 transmits data to the NFC communication apparatus 2 by modulating electromagnetic waves generated by itself, while the NFC communication apparatus 2 transmits data to the NFC communication apparatus 1 by performing load modulation on the electromagnetic waves generated by the NFC communication apparatus 1.
    Type: Application
    Filed: October 28, 2003
    Publication date: April 14, 2005
    Applicant: Sony Corp.
    Inventors: Yoshihisa Takayama, Susumu Kusakabe, Kazushige Tsurumi, Tadashi Morita, Kunihide Fujii
  • Publication number: 20050064814
    Abstract: A portable terminal includes a near-field communication (NFC) device for performing information communication via near-field communication; a write button; and a read button. In order to write information stored in the portable terminal into an information providing apparatus, a user moves the portable terminal close to the information providing apparatus such that a distance between the portable terminal and the information providing apparatus is 10 cm or less while pressing the write button. In order to read information stored in the information providing apparatus into the portable terminal, a user moves the portable terminal close to the information providing apparatus such that a distance between the portable terminal and the information providing apparatus is 10 cm or less while pressing the read button.
    Type: Application
    Filed: July 12, 2004
    Publication date: March 24, 2005
    Applicant: SONY CORPORATION
    Inventors: Takashi Matsuo, Kunihide Fujii, Kazuyuki Sakamoto
  • Publication number: 20040116074
    Abstract: A communication apparatus and a communication method prevent responses from being simultaneously received from two or more communicating parties. A first NFC apparatus transmits data for requesting IDs, and acquires IDs sent from second and third NFC apparatuses in reply to the request. After acquiring the IDs of the second and third NFC apparatuses, the first NFC apparatus transmits data that includes their IDs as the data for the second and third NFC apparatuses. If the first NFC apparatus cannot properly acquire the IDs of the second and third NFC apparatuses, then it sends the data for requesting their IDs again. Upon receipt of the request for the IDs, the second and third NFC apparatuses generate their own IDs by using random numbers and send the generated IDs. If the second and third NFC apparatuses receive the request for their IDs again, then they re-generate their own IDs by using random numbers, and send the re-generated IDs again.
    Type: Application
    Filed: November 19, 2003
    Publication date: June 17, 2004
    Applicant: Sony Corporation
    Inventors: Kunihide Fujii, Tadashi Morita, Shigeru Arisawa, Yoshihisa Takayama
  • Patent number: 5949587
    Abstract: Disclosed is an apparatus for producing an original plate for optical discs, which is allowed to produce original plates for a plurality of kinds of optical discs satisfying various standards. The apparatus includes a laser light generator for generating laser light; a diaphragm mechanism for limiting laser light generated by the laser light generator; and an objective lens for refracting the laser light limited by the diaphragm mechanism in such a manner that the laser light is focussed on a photosensitive layer or a surface layer formed on the original plate; wherein a spot diameter of a beam of the laser light is changed by varying a diaphragm diameter of the diaphragm mechanism.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: September 7, 1999
    Assignee: Sony Corporation
    Inventors: Hiroshi Takamizawa, Kazuhito Hori, Atsushi Koshiyama, Takuya Ichikawa, Kunihide Fujii