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Title: US5513298: Instantaneous context switching for speech recognition systems
[ Derwent Title ]

Country: US United States of America

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11 pages

Inventor: Stanford, Vince M.; Gaithersburg, MD
Klein, Alice G.; Potomac, MD
Brickman, Norman F.; Potomac, MD

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 1996-04-30 / 1995-05-18

Application Number: US1995000443685

IPC Code: Advanced: G06F 3/16; G10L 15/06; G10L 15/10; G10L 15/18; G10L 15/26; G10L 15/14;
IPC-7: G10L 9/00;

ECLA Code: S10L15/14M; S10L15/197;

U.S. Class: Current: 704/243; 704/245; 704/275; 704/E15.044;
Original: 395/002.52; 395/002.54; 395/002.84;

Field of Search: 395/002,2.4,2.52,2.55,2.6,2.65,2.79,2.82,2.84 381/041-43

Priority Number:
1995-05-18  US1995000443685
1992-09-21  US1992000947634

Abstract:     An instantaneous context switching speech recognition system is disclosed which enables a speech recognition application to be changed without loading new pattern matching data into the system. Selectable pointer maps are included in the memory of the system which selectively change the relationship between words and phonemes between a first application context and the pattern matching logic to a second application context and the pattern matching logic.

Attorney, Agent or Firm: Kashimba, Paul T. ; McKinley, Martin J. ; Redmond, Jr., Joseph C. ;

Primary / Asst. Examiners: MacDonald, Allen R.; Sartori, Michael A.

Maintenance Status: E2 Expired  Check current status

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Related Applications:
Application Number Filed Patent Pub. Date  Title
US1992000947634 1992-09-21       

Parent Case:     This application is a continuation of Ser. No. 07/947,634, filed on Sep. 21, 1992, and now abandoned.

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First Claim:
Show all 19 claims
We claim:     1. In a speech recognizer for multiple contexts and a plurality of users, an instantaneous context switching system, comprising:
  • a memory coupled to a data processing means, a speech input means coupled to the plurality of users for speech recognition purposes and an output character string utilization device;
  • a first context partition in said memory including a first plurality of words, each said first plurality of words including a second plurality of phonemes;
  • a second context partition in said memory including a third plurality of words, each said third plurality of words including a fourth plurality of phonemes;
  • a pattern matching partition in said memory including a fifth plurality of phoneme pattern matching data units for sharing by both contexts;
  • a first pointer map including a second plurality of pointers, each respective one of said second plurality of phonemes related to a respective one of said of fifth pattern matching data units;
  • a second pointer map including a fourth plurality of pointers, each respective one of said fourth plurality of phonemes related to a respective one of said fifth plurality of pattern matching data units; and
  • selection means coupled to said memory either for selecting said first context partition and said first pointer map or alternately for selecting said second context partition and said second pointer map, for converting speech input information received from said speech input means into character string information output to said character string utilization device using the shared phoneme pattern matching data units for both contexts;
  • whereby, a context of a speech recognition application can be instantaneously changed without loading new pattern matching data units in said memory.

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Forward References: Show 77 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (77)   |   Backward references (26)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 13pp US4069393  1978-01 Martin et al.  Threshold Technology, Inc. Word recognition apparatus and method
Get PDF - 17pp US4087630  1978-05 Browning et al.  Centigram Corporation Continuous speech recognition apparatus
Get PDF - 15pp US4144582  1979-03 Hyatt   Voice signal processing system
Get PDF - 19pp US4461024  1984-07 Rengger et al.  The Secretary of State for Industry in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland Input device for computer speech recognition system
Get PDF - 27pp US4481593  1984-11 Bahler  Exxon Corporation Continuous speech recognition
Get PDF - 24pp US4489435  1984-12 Moshier  Exxon Corporation Method and apparatus for continuous word string recognition
Get PDF - 16pp US4718088  1988-01 Baker et al.  Exxon Research and Engineering Company Speech recognition training method
Get PDF - 27pp US4720802  1988-01 Damoulakis et al.  Lear Siegler Noise compensation arrangement
Get PDF - 50pp US4783803  1988-11 Baker et al.  Dragon Systems, Inc. Speech recognition apparatus and method
Get PDF - 22pp US4805218  1989-02 Bamberg et al.  Dragon Systems, Inc. Method for speech analysis and speech recognition
Get PDF - 15pp US4829572  1989-05 Kong  Chung; Andrew Ho Speech recognition system
Get PDF - 11pp US4856066  1989-08 Lemelson   Speech communication system and method
Get PDF - 27pp US4897878  1990-01 Boll et al.  ITT Corporation Noise compensation in speech recognition apparatus
Get PDF - 8pp US4905286  1990-02 Sedgwick et al.  National Research Development Corporation Noise compensation in speech recognition
Get PDF - 6pp US4922538  1990-05 Tchorzewski  British Telecommunications public limited company Multi-user speech recognition system
Get PDF - 18pp US4933973  1990-06 Porter  ITT Corporation Apparatus and methods for the selective addition of noise to templates employed in automatic speech recognition systems
Get PDF - 5pp US4961229  1990-10 Takahashi  NEC Corporation Speech recognition system utilizing IC cards for storing unique voice patterns
Get PDF - 48pp US5027406  1991-06 Roberts et al.  Dragon Systems, Inc. Method for interactive speech recognition and training
Get PDF - 12pp US5036538  1991-07 Oken et al.  Telephonics Corporation Multi-station voice recognition and processing system
Get PDF - 10pp US5054082  1991-10 Smith et al.  Motorola, Inc. Method and apparatus for programming devices to recognize voice commands
Get PDF - 11pp US5212730  1993-05 Wheatley et al.  Texas Instruments Incorporated Voice recognition of proper names using text-derived recognition models
Get PDF - 9pp US5265191  1993-11 McNair  AT&T Bell Laboratories Technique for voice-based security systems
Get PDF - 14pp US5317673  1994-05 Cohen et al.  SRI International Method and apparatus for context-dependent estimation of multiple probability distributions of phonetic classes with multilayer perceptrons in a speech recognition system
Get PDF - 9pp US5355433  1994-10 Yasuda et al.  Ricoh Company, Ltd. Standard pattern comparing system for eliminating duplicative data entries for different applications program dictionaries, especially suitable for use in voice recognition systems
Get PDF - 29pp US5390278  1995-02 Gupta et al.  Bell Canada Phoneme based speech recognition
Get PDF - 6pp US5425129  1995-06 Garman et al.  International Business Machines Corporation Method for word spotting in continuous speech
Foreign References:
Publication Date IPC Code Assignee   Title
Get PDF - 48pp EP0215573 1985-08  G10L 5/06 NAT RES DEV Apparatus and methods for speech recognition 
  JP02274048 1990-11       

Other References:
  • K.-F. Lee, "Context-Dependent Phonetic Hidden Markov Models for Speaker-Independent Continuous Speech Recognition," IEEE Transactions on Acoustics, Speech, and Signal Processing, v. 38, No. 4, Apr. 1990, pp. 599-609. (11 pages) Cited by 7 patents
  • IEEE Article by K. F. Lee & H. W. Hon, "Large Vocabulary Speaker Independent Continuous Speech Recognition Using HMM, " 1988, pp. 123-126, (CH2561-9/88/00000-0123).
  • Schmandt et al., "Augmenting a Window System with Speech Input, " Computer, 23(8):50-56, Aug. 1990. (7 pages) Cited by 46 patents

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