Patents by Inventor Atsuo Hashimoto

Atsuo Hashimoto 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).

  • Signal processing apparatus using a hierarchical neural network
    Patent number: 5485548
    Abstract: In a neural network configured of neuron model cells, each neuron model cell is adapted to hold an input signal when a forward process is performed and to hold an error signal inputted when a learning process is performed. The signal processing apparatus is arranged to execute the forward process and the learning process in parallel.
    Type: Grant
    Filed: July 29, 1993
    Date of Patent: January 16, 1996
    Assignee: Ricoh Company, Ltd.
    Inventors: Sugitaka Oteki, Atsuo Hashimoto
  • Neuron unit
    Patent number: 5327522
    Abstract: A neuron unit processes a plurality of input signals and for outputs an output signal which is indicative of a result of the processing, and includes input lines for receiving the input signals, a forward process part including a supplying part for supplying weight functions and an operation part for carrying out an operation on each of the input signals using one of the weight functions and for outputting the output signal, and a self-learning part including a function generating part for generating new weight functions based on errors between the output signal of the forward process part and teaching signals and a varying part for varying the weight functions supplied by the supplying part of the forward process part to the new weight functions generated by the generating part. The supplying part includes a memory for storing each weight function in the form of a binary value, and a generating circuit for generating a random pulse train based on each binary value stored in the memory.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: July 5, 1994
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Furuta, Hiroyuki Horiguchi, Hirotoshi Eguchi, Yutaka Ebi, Tatsuya Furukawa, Yoshio Watanabe, Toshihiro Tsukagoshi, Takahiro Watanabe, Shuji Motomura, Atsuo Hashimoto, Sugitaka Oteki, Satoshi Otsuki, Eiki Aono, Takashi Kitaguchi
  • Neuron unit and neuron unit network
    Patent number: 5324991
    Abstract: A neuron unit processes a plurality of binary input signals and outputs a neuron output signal which is indicative of a result of the processing. The neuron unit is provided with a plurality of first gates respectively for carrying out a logical operation on a binary input signal and a weighting coefficient, a second gate for carrying out a logical operation on an excitatory output signal of each of the first gates, a third gate for carrying out a logic operation on an inhibitory output signal of each of the first gates, a fourth gate for synthesizing output signals of the second and third gates and outputting the neuron output signal, and a generating circuit for generating the weighting coefficients which are supplied to each of the first gates.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: June 28, 1994
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Furuta, Hiroyuki Horiguchi, Hirotoshi Eguchi, Atsuo Hashimoto, Sugitaka Oteki, Toshihiro Tsukagoshi, Satoshi Otsuki, Eiki Aono, Shuji Motomura, Takahiro Watanabe