Patents by Inventor Toshiki Kawamoto

Toshiki Kawamoto 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: 5091947
    Abstract: A voice recognition apparatus includes a coefficient memory for storing at least one coefficient for correcting a degree of similarity which is obtained by either one of the speaker-independent recognition and the speaker-dependent recognition. The apparatus also includes a voice identification circuit for comparing the degrees of similarity of the candidates obtained by either one of the speaker-independent recognition and the speaker-dependent recognition with corrected degrees of similarity of the candidates related to the other recognition type which are obtained by performing a predetermined operation to the degree of similarity of each candidate which is supplied from the other recognition type. Then the voice identification decides one candidate having the highest degree of similarity to be an identification result.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: February 25, 1992
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Ariyoshi, Toshiki Kawamoto, Seigou Yasuda, Syoji Kuriki, Tomofumi Nakatani
  • Patent number: 4945557
    Abstract: An automatic dialing apparatus for use in a telepone or facsimile machine sends out a dial signal to an external network automatically. A detachable telephone number memory, which stores a telephone number together with an area code, is detachably mounted on a telephone unit which includes a memory storing an area code of the district in which the telephone unit is located. The area code of the telepone number data supplied from the telephone number memory is deleted if that area code agrees with the area code stored in the memory of the telephone unit. An automatic dialing apparatus is preferably constructed to carry out dialing automatically responsive to a voice. In the preferred embodiment of such a voice activated dialing apparatus, a telephone number is input through a keyboard and a corresponding identifier, typically the name of a subscriber, is voiced and its voice signal is stored in association with the telephone number.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: July 31, 1990
    Assignee: Ricoh Company, Ltd.
    Inventors: Kunihiro Kaneuchi, Toshiki Kawamoto, Tomofumi Nakatani
  • Patent number: 4833713
    Abstract: A voice or sound recognition system including a microphone for converting a voice into an electrical voice signal, a frequency analyzer for generating a voice pattern in the form of a time-frequency distribution, and a matching unit for matching the voice pattern with registered voice patterns. A voice pattern sometimes contains a bass bar section starting from the beginning of the voice pattern over a time period. In one form of the present invention, the bass bar section is detected and/or eliminated before processing the voice pattern for the purpose of registration or matching. The voice level is sometimes too strong or too weak for appropriate processing. In another form of the present invention, a voice recognition system including a voice input cancelling function is provided. In addition, a system for detecting a voice interval for use in voice data processing, including a device for determining a start point of the voice interval is provided.
    Type: Grant
    Filed: September 4, 1986
    Date of Patent: May 23, 1989
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuya Muroi, Seigou Yasuda, Toshiki Kawamoto, Junichiroh Fujimoto