Patents by Inventor Tomohiko Choraku

Tomohiko Choraku 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: 9414436
    Abstract: A radio communication apparatus for performing radio communication, including: a first interface conversion unit which extracts a first signal and a second signal multiplexed and input, and corresponding to two different formats, and combines the extracted first and second signal; and a common amplifier which is shared by the first and second signal by amplifying the combined first and second signal, wherein a signal output from the common amplifier is transmitted.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: August 9, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Jun Sugiyama, Shuya Hirata, Tomohiko Choraku
  • Patent number: 9320081
    Abstract: A radio communication apparatus for performing radio communication, including: a first interface conversion unit which extracts a first signal and a second signal multiplexed and input, and corresponding to two different formats, and combines the extracted first and second signal; and a common amplifier which is shared by the first and second signal by amplifying the combined first and second signal, wherein a signal output from the common amplifier is transmitted.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: April 19, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Jun Sugiyama, Shuya Hirata, Tomohiko Choraku
  • Patent number: 9148901
    Abstract: A receiving apparatus in a wireless communication system that involves both data transmission using a virtual transmission path in which a plurality of wireless lines of which modulation method is variable are virtually consolidated into one, and time-division multiplex transmission, includes a releasing unit that releases, when a failure occurs in a current line used in the time-division multiplex transmission, one wireless line in the plurality of wireless lines constituting the virtual transmission path from the virtual transmission path; a demodulation unit that changes a modulation method used for demodulation of the one wireless line released from the virtual transmission path by the releasing unit to a modulation method used in the time-division multiplex transmission; and a switching unit that switches line connection from the current line in which the failure has occurred to the one wireless line of which modulation method has been changed by the demodulation unit.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: September 29, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Keiichi Nakano, Tomohiko Choraku
  • Publication number: 20140003413
    Abstract: A radio communication apparatus for performing radio communication, including: a first interface conversion unit which extracts a first signal and a second signal multiplexed and input, and corresponding to two different formats, and combines the extracted first and second signal; and a common amplifier which is shared by the first and second signal by amplifying the combined first and second signal, wherein a signal output from the common amplifier is transmitted.
    Type: Application
    Filed: September 3, 2013
    Publication date: January 2, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Jun SUGIYAMA, Shuya HIRATA, Tomohiko CHORAKU
  • Publication number: 20140003351
    Abstract: A radio communication apparatus for performing radio communication, including: a first interface conversion unit which extracts a first signal and a second signal multiplexed and input, and corresponding to two different formats, and combines the extracted first and second signal; and a common amplifier which is shared by the first and second signal by amplifying the combined first and second signal, wherein a signal output from the common amplifier is transmitted.
    Type: Application
    Filed: September 3, 2013
    Publication date: January 2, 2014
    Applicant: Fujitsu Limited
    Inventors: Jun SUGIYAMA, Shuya HIRATA, Tomohiko CHORAKU
  • Publication number: 20130315055
    Abstract: A receiving apparatus in a wireless communication system that involves both data transmission using a virtual transmission path in which a plurality of wireless lines of which modulation method is variable are virtually consolidated into one, and time-division multiplex transmission, includes a releasing unit that releases, when a failure occurs in a current line used in the time-division multiplex transmission, one wireless line in the plurality of wireless lines constituting the virtual transmission path from the virtual transmission path; a demodulation unit that changes a modulation method used for demodulation of the one wireless line released from the virtual transmission path by the releasing unit to a modulation method used in the time-division multiplex transmission; and a switching unit that switches line connection from the current line in which the failure has occurred to the one wireless line of which modulation method has been changed by the demodulation unit.
    Type: Application
    Filed: August 2, 2013
    Publication date: November 28, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Keiichi NAKANO, Tomohiko CHORAKU
  • Publication number: 20100118751
    Abstract: A radio communication apparatus for performing radio communication, including: a first interface conversion unit which extracts a first signal and a second signal multiplexed and input, and corresponding to two different formats, and combines the extracted first and second signal; and a common amplifier which is shared by the first and second signal by amplifying the combined first and second signal, wherein a signal output from the common amplifier is transmitted.
    Type: Application
    Filed: November 19, 2009
    Publication date: May 13, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Jun Sugiyama, Shuya Hirata, Tomohiko Choraku