Patents by Inventor Nozomu Kawada

Nozomu Kawada 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).

  • AGC circuit of FM front-end portion for controlling bandwidth detection sensitivity
    Patent number: 5369792
    Abstract: According to this invention, there is disclosed an AGC circuit of an FM front-end portion, including an attenuator for attenuating an input signal in accordance with a level of a first signal, an amplifier for amplifying the input signal in accordance with a level of a second signal, a first input amplitude control circuit for outputting third and fourth signals in accordance with a receiving electric field strength of a receiver, a receiving electric field detecting circuit for outputting a fifth signal in accordance with an amplitude of an IF signal in the receiver, and a second input amplitude control circuit for adjusting levels of the first and second signals by changing the third and fourth signals in accordance with the fifth signal.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: November 29, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yutaka Matsumoto, Nozomu Kawada