Patents by Inventor Koji Matsumato

Koji Matsumato 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).

  • Weighting and thresholding circuit for a neural network
    Patent number: 5355438
    Abstract: An analog circuit which performs weighting and thresholding for a neural network. Each neuron of the neural network includes an operational amplifier receiving an input signal, the output of which is connected to a transistor. The transistor conducts only when the output exceeds a predetermined value thereby providing a threshold function. The output of the transistor is connected by a variable resistance to other inputs of other neurons. The output of each operational amplifier thereby corresponds to a weighted version of the input signal, which is adjusted for threshold and is also dependent on other neurons of the network.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: October 11, 1994
    Assignee: Ezel, Inc.
    Inventors: Sunao Takatori, Ryohei Kumagai, Koji Matsumato, Makoto Yamamoto