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Title: US5353377: Speech recognition system having an interface to a host computer bus for direct access to the host memory
[ Derwent Title ]


Country: US United States of America

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10 pages

 
Inventor: Kuroda, Akihiro; Tokyo, Japan
Nishimura, Masafumi; Yokohama, Japan
Toshioka, Koichi; Kawasaki, Japan

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 1994-10-04 / 1992-08-17

Application Number: US1992000931240

IPC Code: Advanced: G09B 19/04; G10L 15/14; G10L 15/28;
IPC-7: G10L 9/00;

ECLA Code: G09B19/04; G10L15/28H; S10L15/14M;

U.S. Class: Current: 704/256.1; 704/251; 704/E15.048;
Original: 395/002.65; 395/002.6;

Field of Search: 381/041-45 395/2.65,2.6

Priority Number:
1991-10-01  JP1991000278896

Abstract:     A signal processing card packaged on a bus of a personal computer has a bus master which is used to access the main memory of the personal computer. A large table of probability values required for speech recognition is held in the main memory. When a label to be processed is generated, only the necessary part of the table is read from the main memory to the memory on the signal processing card by direct memory access transfer to perform speech recognition processing.

Attorney, Agent or Firm: Schechter, Marc D. ; Tassinari, Jr., Robert P. ;

Primary / Asst. Examiners: MacDonald, Allen R.; Doerrler, Michelle

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Designated Country: DE FR GB 

Family: Show 9 known family members

First Claim:
Show all 9 claims
We claim:     1. A speech recognition system for storing information on probability values of Markov models defining speech models of vocabulary words and information on a set of labels indicating phone types assignable to a micro period of time, for sequentially generating corresponding labels in response to an input speech to generate a label stream of said input speech, for accumulating said probability values of said Markov models on the basis of said speech models of said words and said label stream, and for performing speech recognition on the basis of the accumulated values, comprising:
  • a bus;
  • a processor coupled to said bus;
  • a main memory for said processor for storing said probability values of said Markov models accessibly to each of said labels, said main memory being coupled to said bus; and
  • a signal processing unit coupled to said bus,
  • said signal processing unit comprising:
  • means for storing information on said set of labels;
  • means for converting an input speech into said label stream on the basis of said information on the set of labels;
  • means for fetching said probability values of a Markov model related to each of labels contained in said label stream by direct memory access transfer from said main memory;
  • means for accumulating said probability values thus fetched for each of said vocabulary words; and
  • means for determining one or more words to be the result of the recognition on the basis of accumulated probability values.


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Forward References: Show 30 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (30)   |   Backward references (5)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 17pp US4677569  1987-06 Nakano et al.  Casio Computer Co., Ltd. Computer controlled by voice input
Get PDF - 79pp US4718094  1988-01 Bahl et al.  International Business Machines Corp. Speech recognition system
Get PDF - 19pp US4776016  1988-10 Hansen  Position Orientation Systems, Inc. Voice control system
Get PDF - 12pp US4799144  1989-01 Parruck et al.  Alcatel USA, Corp. Multi-function communication board for expanding the versatility of a computer
Get PDF - 53pp US4833712  1989-05 Bahl et al.  International Business Machines Corporation Automatic generation of simple Markov model stunted baseforms for words in a vocabulary
       
Foreign References: None

Other Abstract Info: DERABS G1993-111179

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