Patents by Inventor Mitsuo Nohara

Mitsuo Nohara 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 scramble transmission system
    Patent number: 5881154
    Abstract: A data scramble transmission system with a data transmission link coupled between sending and receiving ends is provided. The link adopts transmission frames each of which is constituted by data and control bits periodically added to the data.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: March 9, 1999
    Assignee: Kokusai Denshin Denwa Co., Ltd.
    Inventors: Mitsuo Nohara, Katsuyuki Yamazaki
  • Up-link power control in satellite communications system
    Patent number: 4910792
    Abstract: An up-link power from an earth station in a satellite communication system is controlled to compensate rain attenuation caused in an up-link so that the transmission power of the earth station is adjusted according to the difference between the level of a received reference signal, which is sent from a reference earth station to the satellite, and the level of its own received signal which is transmitted to the satellite from itself and is received at its own station after being relayed by the satellite. A transmission power of the reference earth station is adjusted so that the level of the received reference signal at the satellite is constant.
    Type: Grant
    Filed: August 12, 1987
    Date of Patent: March 20, 1990
    Assignee: Kokusai Denshin Denwa Co., Ltd.
    Inventors: Fumio Takahata, Mitsuo Nohara, Yoshio Takeuchi
  • Demand-assignment communication system
    Patent number: 4870642
    Abstract: A demand-assignment communication system is disclosed, in which a plurality of earth stations share a plurality of satellite communication channels in one satellite transponder frequency band, and in which a plurality of carriers with a plurality of transmission frequency bands determined according to transmission rate corresponding to plural kinds of communication circuits of different transmission rates are integrally handled and which, upon occurrence of a call from one of the earth stations to another, assigns to the call a satellite communication channel corresponding to the transmission frequency band necessary therefor.
    Type: Grant
    Filed: March 22, 1988
    Date of Patent: September 26, 1989
    Assignee: Kokusai Denshin Denwa Kabushiki Kaisha
    Inventors: Mitsuo Nohara, Fumio Takahata
  • Frequency assignment system in FDMA communication system
    Patent number: 4783779
    Abstract: In a frequency division multiple access (FDMA) communication system, a plurality of carrier frequencies relating to a predetermined frequency band for transmitting a PSK (phase shift keying) signal are provided on a frequency scale. When a service is a low bit rate signal, it is transmitted by using a single carrier frequency and its related frequency band. When a service is a high bit rate signal which can not be transmitted in a single carrier signal, the service signal is divided in to a plurality of low bit rate PSK signals, each of which is transmitted by using a single carrier frequency and the related frequency band.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: November 8, 1988
    Assignee: Kokusai Denshin Denwa Co., Ltd.
    Inventors: Fumio Takahata, Mitsuo Nohara, Yasuo Hirata