Patents by Inventor Shigemi Sakurai

Shigemi Sakurai 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).

  • Polarization diversity system suitable for radio communication in indoor space
    Patent number: 5280631
    Abstract: A polarization diversity radio communication system suitable for radio communication in indoor space is provided for transmitting from a transmitter a series of data sequentially from one of two or more transmission antennas of the transmitter, and for reproducing the data received at a receiver through a single reception antenna of the receiver when the series data are received from the transmitter. Thus, the transmitted data from any part of the indoor space can be received efficiently, and a high S/N ratio can be assured on the reception side.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: January 18, 1994
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Kazuo Nakahi, Hiroshi Umeyama, Shigemi Sakurai, Kuniharu Tatetsuki