Patents by Inventor Wataru Hamada

Wataru Hamada 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).

  • Light guide mechanism for guiding a light to an illuminance sensor
    Patent number: 7884314
    Abstract: A light guide mechanism for an illuminance sensor includes: a lighting window configured to pass through an external light; the illuminance sensor configured to detect an illuminance of the light passed through the lighting window; and a light-blocking part provided between the lighting window and the illuminance sensor and configured to block a light other than the light passed through the lighting window. The light-blocking part has an inner surface inclined with respect to a line perpendicular to a light-receiving surface of the illuminance sensor. A direction of inclination of the inner surface is such that the inner surface faces the light-receiving surface of the illuminance sensor.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: February 8, 2011
    Assignee: Fujitsu Limited
    Inventors: Wataru Hamada, Yuji Takemoto, Toshiharu Hagii, Hui Young Kang, Masashi Tagawa
  • Mobile device having an IC card function
    Patent number: 7641122
    Abstract: To provide a technology for making it possible to control enable/disable of an IC card function provided in a mobile device. A mobile device including an IC card unit for executing an IC card function, and a communication unit for carrying out communication through a radio telephone line detects a voltage of a battery unit for supplying an electric power to each of the IC card unit and the communication unit, judges whether or not the IC card function can be used in accordance with the detected voltage value, and issues an enable/disable instruction to the IC card unit in accordance with the Judgment results.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: January 5, 2010
    Assignees: Fujitsu Limited, NTT DoCoMo, Inc.
    Inventors: Takahiro Shin, Kenetsu Furuki, Yoshihiro Ono, Shinichiro Inui, Takayuki Ebara, Yuko Nakajima, Hideaki Watanabe, Wataru Hamada, Hideyuki Nagasawa, Naoki Naruse, Hisashi Yoshinaga
  • Light guide mechanism for guiding a light to an illuminance sensor
    Publication number: 20090250598
    Abstract: A light guide mechanism for an illuminance sensor includes: a lighting window configured to pass through an external light; the illuminance sensor configured to detect an illuminance of the light passed through the lighting window; and a light-blocking part provided between the lighting window and the illuminance sensor and configured to block a light other than the light passed through the lighting window. The light-blocking part has an inner surface inclined with respect to a line perpendicular to a light-receiving surface of the illuminance sensor. A direction of inclination of the inner surface is such that the inner surface faces the light-receiving surface of the illuminance sensor.
    Type: Application
    Filed: December 23, 2008
    Publication date: October 8, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Wataru Hamada, Yuji Takemoto, Toshiharu Hagii, Hui Young Kang, Masashi Tagawa
  • Mobile device having an IC card function
    Publication number: 20050224587
    Abstract: To provide a technology for making it possible to control enable/disable of an IC card function provided in a mobile device. A mobile device including an IC card unit for executing an IC card function, and a communication unit for carrying out communication through a radio telephone line detects a voltage of a battery unit for supplying an electric power to each of the IC card unit and the communication unit, judges whether or not the IC card function can be used in accordance with the detected voltage value, and issues an enable/disable instruction to the IC card unit in accordance with the Judgment results.
    Type: Application
    Filed: October 25, 2004
    Publication date: October 13, 2005
    Applicants: FUJITSU LIMITED, NTT DoCoMo, Inc.
    Inventors: Takahiro Shin, Kenetsu Furuki, Yoshihiro Ono, Shinichiro Inui, Takayuki Ebara, Yuko Nakajima, Hideaki Watanabe, Wataru Hamada, Hideyuki Nagasawa, Naoki Naruse, Hisashi Yoshinaga