Patents by Inventor Yoshinobu Yamamoto

Yoshinobu Yamamoto 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).

  • Patent number: 5379451
    Abstract: A mobile station, operable in a mobil communication system that executes a location registration processing by using the channel quality of a base station and an information concerning a base station the mobile station includes a base station information memory unit for storing therein information concerning a plurality of base stations and an amount in which the channel quality of the base station is changed with time and a location judging unit for judging on the basis of the amount in which the base station information is changed with time and which is stored in the base station information memory unit whether or not location registration processing is to be executed indicating a location in service area.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: January 3, 1995
    Assignees: Hitachi, Ltd., Kokusai Electric Co., Ltd.
    Inventors: Arata Nakagoshi, Hideya Suzuki, Yoshinobu Yamamoto, Isao Shimbo, Tsuneo Furuya, Hiroshi Kuwahara
  • Patent number: 5353281
    Abstract: An intermittenceless switching system includes two speech path memories having sufficient capacity to store a single frame of data having a plurality of time slots. The incoming data is stored in one memory, while the outgoing data is read from the other memory. A control circuit continuously alternates the read/write functions between the two memories. A control memory is used to store switch control information. The system includes a buffer memory that is present between a data processor and the control memory to prevent switch operation during data transmission. The system also includes a monitoring circuit for detecting an indication bit signifying the presence or absence of data in the time slot.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: October 4, 1994
    Assignees: Kokusai Electric Co., Ltd., Hitachi, Ltd.
    Inventors: Hiroshi Kuwahara, Kazuhiro Suzuki, Toshikazu Sasa, Kenzo Urabe, Arata Nakagoshi, Hideya Suzuki, Yohichi Ogawa, Tsuneo Furuya, Yoshinobu Yamamoto
  • Patent number: 5301225
    Abstract: A mobile radio telecommunication system and method provide battery-saving receiving of mobile stations. The mobile station autonomously changes the period of intermittence according to the frequency of paging in order to reduce the power consumption of the mobile station. When there has not been paging processing for a fixed time, the mobile station autonomously prolongs the period of intermittence and reregisters a new period of intermittence. In case there has been paging processing, the mobile station shortens the period of intermittence. If blocking has occurred for paging from the cell site, the cell site incorporates blocking information into a broadcast signal, informs the mobile station of occurrence of blocking, and registers a new period of intermittence.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: April 5, 1994
    Assignees: Hitachi, Ltd., Kokusai Electric Co. Ltd.
    Inventors: Kazuhiro Suzuki, Tsuneo Furuya, Kenzo Urabe, Yoshinobu Yamamoto, Hideya Suzuki
  • Patent number: 5104872
    Abstract: Compound of the general formula (I), which is useful as an agricultural and horticultural fungicide, an agricultural and horticultural fungicidal composition containing said compound, use of said composition for controlling plant disease, and process for the production of said compound: ##STR1## wherein ##STR2## shows a case in which R.sup.3 and R.sup.4 together form a cyclic substituent, and R.sup.1 and R.sup.4 are substituents disclosed in the specification.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: April 14, 1992
    Assignee: Nihon Hohyaku Co., Ltd.
    Inventors: Kenji Tsubata, Nobuyuki Niino, Katsutoshi Endo, Yoshinobu Yamamoto, Hideo Kanno