Patents by Inventor Hiroyuki Litsuka

Hiroyuki Litsuka 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).

  • Data transmitting apparatus, data receiving apparatus and data transmission control apparatus
    Patent number: 6577646
    Abstract: It is objected to simplify a procedure concerning bandwidth acquisition. Bandwidth acquiring means 809 of a second transmitting apparatus 814 acquires a bandwidth which was used by a first transmitting apparatus 806 by using a propagation delay identifier 804 read from first transmitting apparatus 806 and a maximum transmission data size 805 after stopping transmission of first transmitting apparatus 806. Each apparatus is composed so that transmission is started using this bandwidth and because returning and re-acquisition are not accompanied when the transmission is switched, necessary procedure can be simplified. Further, it is possible to effectively use the bandwidth by using a propagation delay identifier.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: June 10, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hidetoshi Takeda, Hiroyuki Litsuka, Takuya Nishimura, Masazumi Yamada
  • Data transmitting apparatus, data receiving apparatus and data transmission control apparatus
    Publication number: 20020057714
    Abstract: It is objected to simplify a procedure concerning bandwidth acquisition. Bandwidth acquiring means 809 of a second transmitting apparatus 814 acquires a bandwidth which was used by a first transmitting apparatus 806 by using a propagation delay identifier 804 read from first transmitting apparatus 806 and a maximum transmission data size 805 after stopping transmission of first transmitting apparatus 806. Each apparatus is composed so that transmission is started using this bandwidth and because returning and re-acquisition are not accompanied when the transmission is switched, necessary procedure can be simplified. Further, it is possible to effectively use the bandwidth by using a propagation delay identifier.
    Type: Application
    Filed: November 29, 2001
    Publication date: May 16, 2002
    Inventors: Hidetoshi Takeda, Hiroyuki Litsuka, Takuya Nishimura, Masazumi Yamada