Patents by Inventor Yasuyuki Kawaida

Yasuyuki Kawaida 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).

  • Wireless communication system, wireless relay apparatus, and data receiving method for wireless terminal
    Patent number: 10390282
    Abstract: In a wireless communication system that includes a plurality of wireless terminals each of which has a first device type and transmits data to a destination, and a plurality of wireless relay apparatuses each of which has a second device type and relays the data that is received in wireless communication with each wireless terminal to the destination, each of the plurality of wireless terminals detects a wireless frame, receives data contained in the wireless frame when the detected wireless frame contains information that represents the first device type, and avoids receiving data contained in the wireless frame when the detected wireless frame contains information that represents the second device type.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: August 20, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Katsumi Sakurai, Yuji Takahashi, Takashi Higashinakagawa, Yasuyuki Kawaida, Tadashige Iwao
  • COMMUNICATION SYSTEM, COMMUNICATION APPARATUS, DATA RETRANSMISSION METHOD, AND DATA RETRANSMISSION CONTROL METHOD
    Publication number: 20160278066
    Abstract: A communication system includes a first communication apparatus that transmits a transmission notice of data and thereafter transmits the data, and a second communication apparatus that transmits a negative acknowledgement signal to the first communication apparatus when receiving the transmission notice and thereafter failing to detect data transmission corresponding to the transmission notice, wherein the first communication apparatus performs a retransmission process of the data when receiving the negative acknowledgement signal.
    Type: Application
    Filed: March 15, 2016
    Publication date: September 22, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Katsumi SAKURAI, Yuji TAKAHASHI, Takashi Higashinakagawa, Tadashige IWAO, Yasuyuki KAWAIDA
  • WIRELESS COMMUNICATION SYSTEM, WIRELESS RELAY APPARATUS, AND DATA RECEIVING METHOD FOR WIRELESS TERMINAL
    Publication number: 20160219491
    Abstract: In a wireless communication system that includes a plurality of wireless terminals each of which has a first device type and transmits data to a destination, and a plurality of wireless relay apparatuses each of which has a second device type and relays the data that is received in wireless communication with each wireless terminal to the destination, each of the plurality of wireless terminals detects a wireless frame, receives data contained in the wireless frame when the detected wireless frame contains information that represents the first device type, and avoids receiving data contained in the wireless frame when the detected wireless frame contains information that represents the second device type.
    Type: Application
    Filed: December 9, 2015
    Publication date: July 28, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Katsumi SAKURAI, Yuji TAKAHASHI, Takashi Higashinakagawa, Yasuyuki KAWAIDA, Tadashige IWAO
  • Method and apparatus for disaster prevention
    Patent number: 7436294
    Abstract: An apparatus, which is for disaster prevention installed in a facility, includes a radio-frequency identification tag that stores at least one of a first data and a second data. The first data is related to the disaster prevention, and is transmitted by wireless communication. The second data is related to the disaster prevention, and is received by wireless communication.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: October 14, 2008
    Assignee: Fujitsu Limited
    Inventors: Susumu Saga, Yasuyuki Kawaida, Hiroko Kaneko
  • Method and apparatus for disaster prevention
    Publication number: 20060226970
    Abstract: An apparatus, which is for disaster prevention installed in a facility, includes a radio-frequency identification tag that stores at least one of a first data and a second data. The first data is related to the disaster prevention, and is transmitted by wireless communication. The second data is related to the disaster prevention, and is received by wireless communication.
    Type: Application
    Filed: August 1, 2005
    Publication date: October 12, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Susumu Saga, Yasuyuki Kawaida, Hiroko Kaneko