Patents by Inventor Kazutoshi OHISHI

Kazutoshi OHISHI 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).

  • Communication apparatus, and method and program for controlling the same
    Patent number: 9131383
    Abstract: A communication apparatus comprises a reception unit that receives a reception signal from a metal cable and extracts reception data; a transmission unit that sends a transmission signal obtained by modulating transmission data with a frequency included in a first frequency band to the metal cable; an interference signal detection unit that detects a signal used in wireless communication, modulated by a frequency included in a second frequency band, and transmitted over the metal cable as an interference signal; and a signal transmission control unit that instructs the transmission unit to modulate transmission data using a frequency included in a third frequency band that does not have any frequency band overlapping the second frequency band when the interference signal is detected and a frequency band overlapping both the first frequency band and the second frequency band exists.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: September 8, 2015
    Assignee: NEC MAGNUS COMMUNICATIONS, LTD.
    Inventors: Yuusaku Okamura, Yasushi Hamada, Kazutoshi Ohishi
  • Communication apparatus that suppresses interference of communication signal of communication apparatus using a cable, and method and program for controlling the same
    Patent number: 8914838
    Abstract: A communication apparatus comprises a reception unit that receives a reception signal from a metal cable and extracts reception data; a transmission unit that sends a transmission signal obtained by modulating transmission data with a frequency included in a first frequency band to the metal cable; an interference signal detection unit that detects a signal used in communication using a cable modem, modulated by a frequency included in a second frequency band, and transmitted over the metal cable as an interference signal; and a signal transmission control unit that instructs the transmission unit to modulate transmission data using a frequency included in a third frequency band that does not have any frequency band overlapping the second frequency band when the interference signal is detected and a frequency band overlapping both the first frequency band and the second frequency band exists.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: December 16, 2014
    Assignee: NEC Magnus Communications, Ltd.
    Inventors: Yuusaku Okamura, Yasushi Hamada, Yoshitaka Nakano, Kazutoshi Ohishi
  • COMMUNICATION APPARATUS, AND METHOD AND PROGRAM FOR CONTROLLING THE SAME
    Publication number: 20140033263
    Abstract: A communication apparatus comprises a reception unit that receives a reception signal from a metal cable and extracts reception data; a transmission unit that sends a transmission signal obtained by modulating transmission data with a frequency included in a first frequency band to the metal cable; an interference signal detection unit that detects a signal used in communication using a cable modem, modulated by a frequency included in a second frequency band, and transmitted over the metal cable as an interference signal; and a signal transmission control unit that instructs the transmission unit to modulate transmission data using a frequency included in a third frequency band that does not have any frequency band overlapping the second frequency band when the interference signal is detected and a frequency band overlapping both the first frequency band and the second frequency band exists.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 30, 2014
    Inventors: Yuusaku OKAMURA, Yasushi HAMADA, Yoshitaka NAKANO, Kazutoshi OHISHI
  • COMMUNICATION APPARATUS, AND METHOD AND PROGRAM FOR CONTROLLING THE SAME
    Publication number: 20140011457
    Abstract: A communication apparatus comprises a reception unit that receives a reception signal from a metal cable and extracts reception data; a transmission unit that sends a transmission signal obtained by modulating transmission data with a frequency included in a first frequency band to the metal cable; an interference signal detection unit that detects a signal used in wireless communication, modulated by a frequency included in a second frequency band, and transmitted over the metal cable as an interference signal; and a signal transmission control unit that instructs the transmission unit to modulate transmission data using a frequency included in a third frequency band that does not have any frequency band overlapping the second frequency band when the interference signal is detected and a frequency band overlapping both the first frequency band and the second frequency band exists.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 9, 2014
    Inventors: Yuusaku OKAMURA, Yasushi HAMADA, Kazutoshi OHISHI