Patents by Inventor Hitoshi Odate

Hitoshi Odate 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).

  • Repeater for a same frequency with spillover measurement
    Patent number: 4776032
    Abstract: The system for measuring the spillover signal from a transmitter to a receiver in a same frequency repeater or a booster has a frequency conversion device which slightly offsets the transmission frequency from the reception frequency, and a signal detector which measures the offset frequency component in the reception signal. The offset frequency is around 100 Hz, which is higher than the fading frequency, and low enough not to affect the operation of receivers. The measured spillover level is used to control the gain of the repeater, and/or to cancel the spillover signal, so that the repeater has the maximum gain without suffering from oscillation.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: October 4, 1988
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hitoshi Odate, Hisao Takahashi, Toshio Suzuki, Toshio Nojima, Sadayuki Nishiki, Teruya Fujii