Patents by Inventor Nobuyoshi KURUSHIMA

Nobuyoshi KURUSHIMA 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: 11665033
    Abstract: A transmission device includes a frequency detector configured to detect a frequency of an input signal to generate frequency information; a signal generator configured to generate a modulation wave signal with a frequency equivalent to the frequency of the input signal based on the frequency information; and a single side band modulator configured to modulate a carrier wave by the modulation wave signal.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: May 30, 2023
    Assignee: JVCKENWOOD Corporation
    Inventor: Nobuyoshi Kurushima
  • Publication number: 20220006675
    Abstract: A transmission device includes a frequency detector configured to detect a frequency of an input signal to generate frequency information; a signal generator configured to generate a modulation wave signal with a frequency equivalent to the frequency of the input signal based on the frequency information; and a single side band modulator configured to modulate a carrier wave by the modulation wave signal.
    Type: Application
    Filed: June 22, 2021
    Publication date: January 6, 2022
    Inventor: Nobuyoshi Kurushima
  • Patent number: 11012046
    Abstract: In a gain control device, a gain control voltage adjust circuit includes a time-constant circuit and outputs an adjusted gain control voltage depending on an adjustment signal and a control voltage generated by a differential amplifier upon input of the adjustment signal. An adjustment signal generation circuit outputs the adjustment signal during an adjustment signal output period. This period is a specified period before a first burst signal is output from a signal output unit and where a burst signal is not output from the signal output unit. The adjustment signal is to make the adjusted gain control voltage closer to a target voltage. The target voltage is a gain control voltage output from the gain control voltage adjust circuit and corresponding to a steady part of a second burst signal. The second burst signal is a burst signal output before the first burst signal.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: May 18, 2021
    Assignee: JVCKENWOOD Corporation
    Inventor: Nobuyoshi Kurushima
  • Publication number: 20200067471
    Abstract: In a gain control device, a gain control voltage adjust circuit includes a time-constant circuit and outputs an adjusted gain control voltage depending on an adjustment signal and a control voltage generated by a differential amplifier upon input of the adjustment signal. An adjustment signal generation circuit outputs the adjustment signal during an adjustment signal output period. This period is a specified period before a first burst signal is output from a signal output unit and where a burst signal is not output from the signal output unit. The adjustment signal is to make the adjusted gain control voltage closer to a target voltage. The target voltage is a gain control voltage output from the gain control voltage adjust circuit and corresponding to a steady part of a second burst signal. The second burst signal is a burst signal output before the first burst signal.
    Type: Application
    Filed: July 2, 2019
    Publication date: February 27, 2020
    Inventor: Nobuyoshi KURUSHIMA