Patents by Inventor Takamitsu Kamiyama

Takamitsu Kamiyama 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).

  • Scanning circuit to deliver train of pulses shifted by a constant delay one after another
    Patent number: 4011402
    Abstract: In a scanning circuit having a plurality of cascade-connected unit circuits driven only by direct current, each unit circuit consisting of at least a pair of polarity inverting circuits, a train of output pulses shifted by a constant delay one after another depending upon the delay time proper to the unit circuits, are derived from the unit circuits by applying an input pulse to the first stage of the scanning circuit.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: March 8, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Norio Koike, Takamitsu Kamiyama, Mikio Ashikawa
  • Semiconductor image sensor
    Patent number: 3946151
    Abstract: In an image sensor having a large scale array of semiconductor photodetectors, only the noise component is delivered from a first photodetector subsequent to the readout of a stored signal, in synchronism with the readout of a signal of a second photodetector, so that the noise component may be utilized for the cancellation of the noise component in the output from the second photodetector.
    Type: Grant
    Filed: February 14, 1974
    Date of Patent: March 23, 1976
    Assignee: Hitachi, Ltd.
    Inventors: Takamitsu Kamiyama, Mikio Ashikawa