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).

  • Patent number: 8417184
    Abstract: A communication system and communication method enable various types of near field communication. NFC communication apparatuses 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, for example, a first NFC communication apparatus transmits data to a second NFC communication apparatus by modulating electromagnetic waves generated by itself, while the second NFC communication apparatus transmits data to the first NFC communication apparatus by performing load modulation on the electromagnetic waves generated by the first NFC communication apparatus. Alternatively, in the active mode, either of the NFC communication apparatuses transmits data by modulating electromagnetic waves generated by itself.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: April 9, 2013
    Assignee: Sony Corporation
    Inventors: Yoshihisa Takayama, Susumu Kusakabe, Kazushige Tsurumi, Tadashi Morita, Kunihide Fujii
  • Patent number: 8379617
    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: Grant
    Filed: November 2, 2010
    Date of Patent: February 19, 2013
    Assignee: Sony Corporation
    Inventor: Kunihide Fujii
  • Publication number: 20130005287
    Abstract: A method for a communication device includes determining whether a first radio frequency (RF) signal at a level of at least a first predetermined field threshold is detected. The method also includes generating a second RF signal at a level of at least a second predetermined field threshold greater than the first predetermined field threshold, when the communication device receives an instruction to generate the second RF signal and the determining determines that the first RF signal at the level of at least the first predetermined field threshold is not detected. The method further includes receiving a load modulated RF signal in response to the second RF signal.
    Type: Application
    Filed: September 13, 2012
    Publication date: January 3, 2013
    Applicant: SONY CORPORATION
    Inventors: Kunihide Fujii, Tadashi Morita, Shigeru Arisawa, Yoshihisa Takayama
  • Publication number: 20120231735
    Abstract: A communication system and communication method enable various types of near field communication. NFC communication apparatuses 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, for example, a first NFC communication apparatus transmits data to a second NFC communication apparatus by modulating electromagnetic waves generated by itself, while the second NFC communication apparatus transmits data to the first NFC communication apparatus by performing load modulation on the electromagnetic waves generated by the first NFC communication apparatus. Alternatively, in the active mode, either of the NFC communication apparatuses transmits data by modulating electromagnetic waves generated by itself.
    Type: Application
    Filed: May 21, 2012
    Publication date: September 13, 2012
    Applicant: SONY CORPORATION
    Inventors: Yoshihisa TAKAYAMA, Susumu Kusakabe, Kazushige Tsurumi, Tadashi Morita, Kunihide Fujii
  • Patent number: 8224243
    Abstract: A communication system performs, by first and second data processing apparatuses, an electromagnetic-induction communication using a carrier having a single frequency. A transfer rate for use between the first and second data processing apparatuses is changeable in one transaction. The first data processing apparatus determines whether a transfer rate can be changed based on data transmitted from the second data processing apparatus. When the first data processing apparatus determines that the transfer rate can be changed, the first data processing apparatus transmits to the second data processing apparatus a request to change the transfer rate to one of a plurality of transfer rates.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: July 17, 2012
    Assignee: Sony Corporation
    Inventors: Yoshihisa Takayama, Susumu Kusakabe, Kazushige Tsurumi, Tadashi Morita, Kunihide Fujii
  • Patent number: 8200153
    Abstract: A communication system performs, by first and second data processing apparatuses, an electromagnetic-induction communication using a carrier having a single frequency. A transfer rate for use between the first and second data processing apparatuses is changeable in one transaction. The first data processing apparatus determines whether a transfer rate can be changed based on data transmitted from the second data processing apparatus. When the first data processing apparatus determines that the transfer rate can be changed, the first data processing apparatus transmits to the second data processing apparatus a request to change the transfer rate to one of a plurality of transfer rates.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: June 12, 2012
    Assignee: Sony Corporation
    Inventors: Yoshihisa Takayama, Susumu Kusakabe, Kazushige Tsurumi, Tadashi Morita, Kunihide Fujii
  • Publication number: 20110044396
    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: November 2, 2010
    Publication date: February 24, 2011
    Applicant: Sony Corporation
    Inventor: Kunihide Fujii
  • Patent number: 7872995
    Abstract: A communication system includes first and second communication devices that carry out wireless communication. The first communication device includes a setter configured to set a first indication mode and a corresponding second indication mode, a sender configured to send data representing the second indication mode to the second communication device when communication has been established with the second communication device, and a first indicator configured to indicate the establishment of communication in the first indication mode, correspondingly to indication in the second indication mode by the second communication device. The second communication device includes a receiver configured to receive the data representing the second indication mode, and a second indicator configured to indicate the establishment of communication in the second indication mode, correspondingly to the indication in the first indication mode by the first communication device.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: January 18, 2011
    Assignee: Sony Corporation
    Inventors: Kunihide Fujii, Kazuyuki Sakamoto
  • Patent number: 7835338
    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: Grant
    Filed: March 6, 2006
    Date of Patent: November 16, 2010
    Assignee: Sony Corporation
    Inventor: Kunihide Fujii
  • Patent number: 7766237
    Abstract: A mobile radio communication device can automatically initialize the mode of a SAM card (or the SAM function area of an IC card) after executing radio communication with an external radio communication apparatus. The mobile radio communication device transmits/receives data to/from an external radio communication apparatus located in an area that allows radio communication. In the mobile radio communication device, an IC card that receives power supply from a mobile radio communication device main-unit, that manages data transmitted/received to/from the external radio communication apparatus, and that manages a communication mode state of the mobile radio communication device is detachably connected to the mobile radio communication device main-unit.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: August 3, 2010
    Assignee: Sony Corporation
    Inventors: Kazuyuki Sakamoto, Kunihide Fujii
  • Patent number: 7711323
    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: Grant
    Filed: November 11, 2004
    Date of Patent: May 4, 2010
    Assignee: Sony Corporation
    Inventor: Kunihide Fujii
  • Patent number: 7522879
    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: Grant
    Filed: June 7, 2007
    Date of Patent: April 21, 2009
    Assignee: Sony Corporation
    Inventors: Takashi Matsuo, Kunihide Fujii, Kazuyuki Sakamoto
  • Publication number: 20080126560
    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: December 12, 2007
    Publication date: May 29, 2008
    Applicant: Sony Corporation
    Inventors: Yoshihisa TAKAYAMA, Susumu Kusakabe, Kazushige Tsurumi, Tadashi Morita, Kunihide Fujii
  • Patent number: 7346061
    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: Grant
    Filed: October 28, 2003
    Date of Patent: March 18, 2008
    Assignee: Sony Corporation
    Inventors: Yoshihisa Takayama, Susumu Kusakabe, Kazushige Tsurumi, Tadashi Morita, Kunihide Fujii
  • Publication number: 20070232232
    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: June 7, 2007
    Publication date: October 4, 2007
    Applicant: SONY CORPORATION
    Inventors: Takashi Matsuo, Kunihide Fujii, Kazuyuki Sakamoto
  • Publication number: 20070171848
    Abstract: A communication system includes first and second communication devices that carry out wireless communication. The first communication device includes a setter configured to set a first indication mode and a corresponding second indication mode, a sender configured to send data representing the second indication mode to the second communication device when communication has been established with the second communication device, and a first indicator configured to indicate the establishment of communication in the first indication mode, correspondingly to indication in the second indication mode by the second communication device. The second communication device includes a receiver configured to receive the data representing the second indication mode, and a second indicator configured to indicate the establishment of communication in the second indication mode, correspondingly to the indication in the first indication mode by the first communication device.
    Type: Application
    Filed: September 11, 2006
    Publication date: July 26, 2007
    Applicant: Sony Corporation
    Inventors: Kunihide Fujii, Kazuyuki Sakamoto
  • Patent number: 7248834
    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: Grant
    Filed: July 12, 2004
    Date of Patent: July 24, 2007
    Assignee: Sony Corporation
    Inventors: Takashi Matsuo, Kunihide Fujii, Kazuyuki Sakamoto
  • Patent number: 7209706
    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: Grant
    Filed: November 19, 2003
    Date of Patent: April 24, 2007
    Assignee: Sony Corporation
    Inventors: Kunihide Fujii, Tadashi Morita, Shigeru Arisawa, Yoshihisa Takayama
  • Publication number: 20070026893
    Abstract: A mobile radio communication device can automatically initialize the mode of a SAM card (or the SAM function area of an IC card) after executing radio communication with an external radio communication apparatus. The mobile radio communication device transmits/receives data to/from an external radio communication apparatus located in an area that allows radio communication. In the mobile radio communication device, an IC card that receives power supply from a mobile radio communication device main-unit, that manages data transmitted/received to/from the external radio communication apparatus, and that manages a communication mode state of the mobile radio communication device is detachably connected to the mobile radio communication device main-unit.
    Type: Application
    Filed: October 22, 2004
    Publication date: February 1, 2007
    Applicant: Sony Corporation
    Inventors: Kazuyuki Sakamoto, Kunihide Fujii
  • Publication number: 20060245402
    Abstract: The present invention relates to a communication system, a communication device, and a communication method for easily solving a problem of a hidden terminal. Communication devices 1 and 3 determine whether or not an electromagnetic wave at the level of a magnetic-flux density TH1 or more for determining the suppression of the output of carrier. When the electromagnetic wave at the level of the magnetic-flux density TH1 or more for determining the suppression of the output of the carrier is not detected, the communication devices 1 and 3 start the output of the electromagnetic wave. A communication device 2 needs the electromagnetic wave at the level of a magnetic-flux density TH2 or more of the carrier at an operating limit, which is higher than the magnetic-flux density TH1 for determining suppression of the output of carrier so as to obtain data via the electromagnetic wave. The present invention is applied to, e.g., an IC (Integrated Circuit) card system.
    Type: Application
    Filed: December 8, 2003
    Publication date: November 2, 2006
    Applicant: Sony Corporation
    Inventors: Kunihide Fujii, Tadashi Morita, Shigeru Arisawa, Yoshihisa Takayama