US3265814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonetic typewriter system
Assignee: NTT Inc
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Filing: 1964-11-30
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Granted: 1966-08-09
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Expires: 1984-11-30
Abstract
Abstract 981,154. Recognising speech sounds. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION. June 29, 1961 [March 20, 1961], No. 2050/64. Divided out of 981,153. Heading G4R. In a phonetic typewriter control system there are phoneme classifying means, distinctive feature extracting means and sound analysing means, the respective outputs being stored in a buffer memory and read out at high speed to a recognition logic circuit. The system described is identical to that of Specification 981,153.
Inventors
- 👤 Maeda Kenichi
- 👤 Sakai Toshiyuki
- 👤 Doshita Shuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:37
CPC Classifications
G; G10; G10L; G10L25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
226 words
A PHONEME RECOGNITION SYSTEM COMPRISING AN INPUT TRANSDUCER, A PHONEME CLASSIFIER HAVING ITS INPUT CONNECTED TO SAID TRANSDUCER, AN ANALOG-TO-DIGITAL CONVERTER HAVING ITS INPUT CONNECTED TO SAID TRANSDUCER AND TO A SAMPLE CONTROL CIRCUIT, AN ANALYZER HAVING ONER OF ITS INPUTS CONNECTED TO SAID TRANSDUCER, A STABILITY DETECTOR AND A DISTANCE DETECTOR EACH HAVING ITS INPUT CONNECTED TO THE OUTPUT OF THE ANALOG-TO-DIGITAL CONVERTER, A PLOSIVE DETECTOR, A TRANSITION DETECTION CIRCUIT AND A VOWEL SECTION DETECTION CIRCUIT, SAID PLOSIVE DETECTOR HAVING ITS INPUT CONNECTED TO THE OUTPUT OF THE DISTANCE DETECTOR AND ITS OUTPUT CONNECTED TO THE PHONEME CLASSIFIER, SAID TRANSITION DETECTION CIRCUIT HAVING ITS INPUTS CONNECTED TO THE OUTPUT OF THE STABILITY DETECTOR AND THE DISTANCE DETECTOR, SAID VOWEL SECTION DETECTION CIRCUIT HAVING ITS INPUTS CONNECTED TO THE OUTPUTS OF THE PHONEME CLASSIFIER, THE STABILITY DETECTOR AND THE DISTANCE DETECTOR, SAID SAMPLE CONTROL CIRCUIT HAVING ITS INPUTS CONNECTED TO THE OUTPUTS OF THE TRANSITION DETECTION CIRCUIT AND THE VOWEL SECTION DETECTOR, A PHONEME DISCRIMINATOR HAVING ITS INPUTS CONNECTED TO THE OUTPUTS OF THE PHONEME CLASSIFIER, THE SAMPLE CONTROL CIRCUIT AND THE ANALYZER, THE ANALYZER INCLUDING AN INPUT CONNECTED TO ONE OF THE OUTPUTS OF THE PHONEME CLASSIFIER, THE ANALYZER HAVING ANOTHER INPUT CONNECTED TO ONE OF THE OUTPUTS OF THE SAMPLE CONTROL CIRCUIT AND AN OUTPUT DEVICE HAVING ITS INPUT CONNECTED TO THE PHONEME DISCRIMINATOR.
Claim 2
Dependent Claim
226 words
A PHONEME RECOGNITION SYSTEM COMPRISING AN INPUT TRANSDUCER, A PHONEME CLASSIFIER HAVING ITS INPUT CONNECTED TO SAID TRANSDUCER, AN ANALOG-TO-DIGITAL CONVERTER HAVING ITS INPUT CONNECTED TO SAID TRANSDUCER AND TO A SAMPLE CONTROL CIRCUIT, AN ANALYZER HAVING ONER OF ITS INPUTS CONNECTED TO SAID TRANSDUCER, A STABILITY DETECTOR AND A DISTANCE DETECTOR EACH HAVING ITS INPUT CONNECTED TO THE OUTPUT OF THE ANALOG-TO-DIGITAL CONVERTER, A PLOSIVE DETECTOR, A TRANSITION DETECTION CIRCUIT AND A VOWEL SECTION DETECTION CIRCUIT, SAID PLOSIVE DETECTOR HAVING ITS INPUT CONNECTED TO THE OUTPUT OF THE DISTANCE DETECTOR AND ITS OUTPUT CONNECTED TO THE PHONEME CLASSIFIER, SAID TRANSITION DETECTION CIRCUIT HAVING ITS INPUTS CONNECTED TO THE OUTPUT OF THE STABILITY DETECTOR AND THE DISTANCE DETECTOR, SAID VOWEL SECTION DETECTION CIRCUIT HAVING ITS INPUTS CONNECTED TO THE OUTPUTS OF THE PHONEME CLASSIFIER, THE STABILITY DETECTOR AND THE DISTANCE DETECTOR, SAID SAMPLE CONTROL CIRCUIT HAVING ITS INPUTS CONNECTED TO THE OUTPUTS OF THE TRANSITION DETECTION CIRCUIT AND THE VOWEL SECTION DETECTOR, A PHONEME DISCRIMINATOR HAVING ITS INPUTS CONNECTED TO THE OUTPUTS OF THE PHONEME CLASSIFIER, THE SAMPLE CONTROL CIRCUIT AND THE ANALYZER, THE ANALYZER INCLUDING AN INPUT CONNECTED TO ONE OF THE OUTPUTS OF THE PHONEME CLASSIFIER, THE ANALYZER HAVING ANOTHER INPUT CONNECTED TO ONE OF THE OUTPUTS OF THE SAMPLE CONTROL CIRCUIT AND AN OUTPUT DEVICE HAVING ITS INPUT CONNECTED TO THE PHONEME DISCRIMINATOR.
References Cited (Backward Citations)
US3166640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |