Patents by Inventor Tetsuo AMAKASU

Tetsuo AMAKASU 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).

  • Speech recognition device, search device, speech recognition method, search method, and program
    Patent number: 11990136
    Abstract: It is intended to acquire a highly accurate speech recognition result for a subject of a conversation, while inhibiting an increase in the amount of calculation. A speech recognition device (10) according to the present invention includes a first speech recognition unit (11) that performs speech recognition processing using a first method on speech data of a conversation made by a plurality of speakers and outputs a speech recognition result for each of respective uttered speech segments of the plurality of speakers, a determination unit (13) that determines a subject segment based on a result of the speech recognition processing by the first speech recognition unit 11, and a second speech recognition unit (14) that performs speech recognition processing using a second method higher in accuracy than the first method on the speech data in the segment determined to be the subject segment and outputs a speech recognition result as a subject text.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: May 21, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Tetsuo Amakasu, Kaname Kasahara, Takafumi Hikichi, Masayuki Sugizaki
  • SPEECH RECOGNITION DEVICE, SEARCH DEVICE, SPEECH RECOGNITION METHOD, SEARCH METHOD, AND PROGRAM
    Publication number: 20220108699
    Abstract: It is intended to acquire a highly accurate speech recognition result for a subject of a conversation, while inhibiting an increase in the amount of calculation. A speech recognition device (10) according to the present invention includes a first speech recognition unit (11) that performs speech recognition processing using a first method on speech data of a conversation made by a plurality of speakers and outputs a speech recognition result for each of respective uttered speech segments of the plurality of speakers, a determination unit (13) that determines a subject segment based on a result of the speech recognition processing by the first speech recognition unit 11, and a second speech recognition unit (14) that performs speech recognition processing using a second method higher in accuracy than the first method on the speech data in the segment determined to be the subject segment and outputs a speech recognition result as a subject text.
    Type: Application
    Filed: January 24, 2020
    Publication date: April 7, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Tetsuo AMAKASU, Kaname KASAHARA, Takafumi HIKICHI, Masayuki SUGIZAKI