Patents by Inventor Hirotoshi KANNO

Hirotoshi KANNO 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: 9559732
    Abstract: A wireless apparatus including: an amplification circuit configured to generate a second signal by amplifying power of a first signal, a calculation circuit configured to calculate a deviation amount of phase deviation of the second signal from the first signal, and a correction circuit configured to correct the phase deviation using a correction method that is selected from a plurality of correction methods based on the deviation amount, the plurality of correction methods among which each power consumption is higher as each correction amount corresponding to each power consumption is greater.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: January 31, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Yoshinobu Shizawa, Hirotoshi Kanno, Yasushi Seino, Junya Morita, Tsuneaki Tadano
  • Publication number: 20160301432
    Abstract: A wireless apparatus including: an amplification circuit configured to generate a second signal by amplifying power of a first signal, a calculation circuit configured to calculate a deviation amount of phase deviation of the second signal from the first signal, and a correction circuit configured to correct the phase deviation using a correction method that is selected from a plurality of correction methods based on the deviation amount, the plurality of correction methods among which each power consumption is higher as each correction amount corresponding to each power consumption is greater.
    Type: Application
    Filed: March 14, 2016
    Publication date: October 13, 2016
    Inventors: Yoshinobu SHIZAWA, Hirotoshi KANNO, Yasushi SEINO, Junya MORITA, Tsuneaki TADANO
  • Publication number: 20140141736
    Abstract: A wireless communication device includes: an amplifier configured to amplify a transmission signal to a given power level, the transmission signal being transmitted in wireless communication; and a processor coupled to the amplifier and configured to: select a communication protocol that is used for the wireless communication, from among a plurality of communication protocols including a first communication protocol and a second communication protocol of a lower communication speed than the first communication protocol, in accordance with a condition of the wireless communication, and control power source voltage of the amplifier by a control scheme determined in accordance with a communication speed of the selected communication protocol.
    Type: Application
    Filed: November 4, 2013
    Publication date: May 22, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Hirotoshi KANNO, Mitsunori MAEDA, Takayoshi ODE
  • Patent number: 8509715
    Abstract: A transmitter includes: a first envelope extractor that extracts a first envelope signal on the basis of a first modulated signal of a first frequency modulated with transmission data; a second envelope extractor that extracts a second envelope signal on the basis of a second modulated signal of a second frequency modulated with the transmission data, the second frequency being higher than the first frequency; an amplifier that amplifies one of the first modulated signal and the second modulated signal; a power adjuster that outputs a voltage of power supplied to the amplifier; and a controller that makes the amplifier amplify one of the first modulated signal and the second modulated signal and makes the power adjuster output the voltage of the supplied power on the basis of corresponding one of the first envelope signal and the second envelope signal.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: August 13, 2013
    Assignee: Fujitsu Limited
    Inventors: Hirotoshi Kanno, Mitsunori Maeda, Takayoshi Ode
  • Publication number: 20120214431
    Abstract: A transmitter includes: a first envelope extractor that extracts a first envelope signal on the basis of a first modulated signal of a first frequency modulated with transmission data; a second envelope extractor that extracts a second envelope signal on the basis of a second modulated signal of a second frequency modulated with the transmission data, the second frequency being higher than the first frequency; an amplifier that amplifies one of the first modulated signal and the second modulated signal; a power adjuster that outputs a voltage of power supplied to the amplifier; and a controller that makes the amplifier amplify one of the first modulated signal and the second modulated signal and makes the power adjuster output the voltage of the supplied power on the basis of corresponding one of the first envelope signal and the second envelope signal.
    Type: Application
    Filed: December 2, 2011
    Publication date: August 23, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Hirotoshi KANNO, Mitsunori MAEDA, Takayoshi ODE