Patents by Inventor Naoto Iwamura

Naoto Iwamura 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).

  • PACKET TRANSMITTING APPARATUS, PACKET RECEIVING APPARATUS, COMMUNICATION SYSTEM, AND PACKET COMMUNICATION METHOD
    Publication number: 20110235634
    Abstract: A packet transmitting apparatus 2 includes: a packet transmitting unit 20 which transmits a packet having a preassigned sequence number to a destination apparatus 3; a transmitted-packet indication information generating unit 21 which generates transmitted-packet indication information that indicates the packet transmitted by the packet transmitting unit 20; and a transmitted-packet indication information transmitting unit 23 which transmits the transmitted-packet indication information to the destination apparatus 3 separately from the packet.
    Type: Application
    Filed: June 6, 2011
    Publication date: September 29, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Isamu FUKUDA, Shinya HATAKEYAMA, Naoto IWAMURA, Akio OHHASHI
  • Transmission parameter control device
    Patent number: 7463578
    Abstract: A transmission parameter control apparatus that improves transmission quality of real-time media in a transmission route that includes a wireless section in at least a part of the transmission route. The transmission parameter control apparatus is connected to a terminal via a network and is connected to a mobile terminal via a wireless link. The apparatus includes: an obtaining part for obtaining a quality parameter indicating transmission quality corresponding to the wireless link from signals of downlink and uplink transmission routes; and an adjustment part for adjusting a value of a transmission parameter determining a transmission scheme in the wireless link according to the quality parameter.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: December 9, 2008
    Assignee: Fujitsu Limited
    Inventors: Naoto Iwamura, Seiichi Yamaguchi, Yasushi Miyagawa, Shinya Hatakeyama
  • Transmission parameter control device
    Publication number: 20070030821
    Abstract: An object of the present invention is to provide a transmission parameter control apparatus that can improve transmission quality of real-time media in a transmission route that includes a wireless section in at least a part of the transmission route. According to the present invention, a transmission parameter control apparatus 200 that is connected to a terminal 104 via a network 102 and that is connected to a mobile terminal 108 via a wireless link, is provided. The apparatus includes: an obtaining part 210 for obtaining a quality parameter indicating transmission quality corresponding to the wireless link from signals of downlink and uplink transmission routes; and an adjustment part 220 for adjusting a value of a transmission parameter determining a transmission scheme in the wireless link according to the quality parameter.
    Type: Application
    Filed: September 10, 2003
    Publication date: February 8, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Naoto Iwamura, Seiichi Yamaguchi, Yasushi Miyagawa, Shinya Hatakeyama