Patents by Inventor Hiroyuki Nakatsugawa

Hiroyuki Nakatsugawa 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).

  • Non-contact IC, information processing apparatus, reader/writer, and use restriction method
    Patent number: 7946497
    Abstract: A non-contact IC can exchange information with a reader/writer by wireless communication. When the non-contact IC receives from the reader/writer a command indicative of restricting use of the non-contact IC, the non-contact IC sets itself in a state of restricted use. When in the state of restricted use, the non-contact IC can not exchange information with a reader/writer.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: May 24, 2011
    Assignee: Fujitsu Limited
    Inventors: Hiroyuki Nakatsugawa, Kazuhiro Hosaka
  • Portable terminal unit
    Patent number: 7735734
    Abstract: By concealing the existence of an area using a function (which is referred to as IC privacy function) capable of concealing the data area corresponding to each service (behaving as if the data area does not exist), an existing function provided in the contactless IC card, an access to the data necessary for a service can be inhibited, so as to control to inhibit (lock) use of the contactless IC card on a service-by-service basis.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: June 15, 2010
    Assignee: Fujitsu Limited
    Inventors: Hiroyuki Nakatsugawa, Kazuhiro Hosaka, Takuya Otsuki, Masashi Sanjo, Toshinao Osaka, Hiroko Saito, Yoshiteru Chiba, Kenetsu Furuki
  • Portable terminal unit
    Publication number: 20070272752
    Abstract: By concealing the existence of an area using a function (which is referred to as IC privacy function) capable of concealing the data area corresponding to each service (behaving as if the data area does not exist), an existing function provided in the contactless IC card, an access to the data necessary for a service can be inhibited, so as to control to inhibit (lock) use of the contactless IC card on a service-by-service basis.
    Type: Application
    Filed: October 30, 2006
    Publication date: November 29, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Hiroyuki Nakatsugawa, Kazuhiro Hosaka, Takuya Otsuki, Masashi Sanjo, Toshinao Osaka, Hiroko Saito, Yoshiteru Chiba, Kenetsu Furuki
  • Non-contact IC, information processing apparatus, reader/writer, and use restriction method
    Publication number: 20070029392
    Abstract: A non-contact IC can exchange information with a reader/writer by wireless communication. When the non-contact IC receives from the reader/writer a command indicative of restricting use of the non-contact IC, the non-contact IC sets itself in a state of restricted use. When in the state of restricted use, the non-contact IC can not exchange information with a reader/writer.
    Type: Application
    Filed: November 22, 2005
    Publication date: February 8, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Hiroyuki Nakatsugawa, Kazuhiro Hosaka