US3454787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monitor and delay network comprising feedback amplifier,sample and hold circuit and threshold detector combination for error signal level detector
Assignee: Bendix Corp
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Filing: 1966-05-06
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Granted: 1969-07-08
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Expires: 1986-05-06
Abstract
No abstract record available.
Inventors
- 👤 Samson C Gelernter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:24
CPC Classifications
G; G11; G11C; G11C27/00; G11C27/02; G11C27/024; H; H03; H03M; H03M1/00; H03M1/12; H03M1/34; H03M1/36; H03M1/361
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
241 words
IN A MONITOR AND DELAY NETWORK OF A TYPE INCLUDING MEANS FOR AMPLIFYING AN ERROR SIGNAL VOLTAGE, SAID AMPLIFYING MEANS HAVING AN INPUT AND AN OUTPUT; THE IMPROVEMENT COMPRISING SAID AMPLIFYING MEANS INCLUDING A POSITIVE FEEDBACK CIRCUIT CONNECTING IN ONE SENSE THE OUTPUT TO THE INPUT OF SAID AMPLIFYING MEANS, A SOURCE OF A REFERENCE VOLTAGE, VOLTAGE CLAMPING MEANS CONNECTING IN ANOTHER SENSE THE OUTPUT OF SAID AMPLIFYING MEANS TO SAID REFERENCE VOLTAGE SO AS TO PREVENT THE VOLTAGE AT THE OUTPUT OF SAID AMPLIFYING MEANS FROM DECREASING BELOW A PREDETERMINED MINIMUM VALUE, MEANS FOR EFFECTING AN ALGEBRAIC SUM OF THE REFERENCE VOLTAGE AND THE ERROR SIGNAL VOLTAGE AT THE INPUT TO SAID AMPLIFYING MEANS SO TO PROVIDE AT THE OUTPUT OF THE AMPLIFYING MEANS A TRAIN OF VOLTAGE PULSES UPON THE ERROR SIGNAL VOLTAGE EXCEEDING THE REFERENCE VOLTAGE IN A PREDETERMINED SENSE, THE PULSES OF SAID TRAIN HAVING A REPETITION RATE CORRESPONDING TO THAT OF THE ERROR SIGNAL AND A PLUSE WIDTH PROPORTIONAL TO THE MAGNITUDE THAT THE ERROR SIGNAL VOLTAGE EXCEEDS THE REFERENCE VOLTAGE IN SAID PREDETERMINED SENSE, A THRESHOLD DETECTOR, A SAMPLE AND HOLD NETWORK OPERATIVELY CONNECTED BETWEEN THE OUTPUT OF THE AMPLIFYING MEANS AND THE THRESHOLD DETECTOR, MEANS TO MONITOR A CONDITION OF THE ERROR SIGNAL VOLTAGE, AND SAID MONITOR MEANS BEING CONTROLLED BY THE THRESHOLD DETECTOR IN RESPONSE TO THE PULSE TRAIN AS OPERATIVELY SENSED THROUGH THE SAMPLE AND HOLD NETWORK AFTER A PREDETERMINED DELAY PERIOD.
Claim 2
Dependent Claim
241 words
IN A MONITOR AND DELAY NETWORK OF A TYPE INCLUDING MEANS FOR AMPLIFYING AN ERROR SIGNAL VOLTAGE, SAID AMPLIFYING MEANS HAVING AN INPUT AND AN OUTPUT; THE IMPROVEMENT COMPRISING SAID AMPLIFYING MEANS INCLUDING A POSITIVE FEEDBACK CIRCUIT CONNECTING IN ONE SENSE THE OUTPUT TO THE INPUT OF SAID AMPLIFYING MEANS, A SOURCE OF A REFERENCE VOLTAGE, VOLTAGE CLAMPING MEANS CONNECTING IN ANOTHER SENSE THE OUTPUT OF SAID AMPLIFYING MEANS TO SAID REFERENCE VOLTAGE SO AS TO PREVENT THE VOLTAGE AT THE OUTPUT OF SAID AMPLIFYING MEANS FROM DECREASING BELOW A PREDETERMINED MINIMUM VALUE, MEANS FOR EFFECTING AN ALGEBRAIC SUM OF THE REFERENCE VOLTAGE AND THE ERROR SIGNAL VOLTAGE AT THE INPUT TO SAID AMPLIFYING MEANS SO TO PROVIDE AT THE OUTPUT OF THE AMPLIFYING MEANS A TRAIN OF VOLTAGE PULSES UPON THE ERROR SIGNAL VOLTAGE EXCEEDING THE REFERENCE VOLTAGE IN A PREDETERMINED SENSE, THE PULSES OF SAID TRAIN HAVING A REPETITION RATE CORRESPONDING TO THAT OF THE ERROR SIGNAL AND A PLUSE WIDTH PROPORTIONAL TO THE MAGNITUDE THAT THE ERROR SIGNAL VOLTAGE EXCEEDS THE REFERENCE VOLTAGE IN SAID PREDETERMINED SENSE, A THRESHOLD DETECTOR, A SAMPLE AND HOLD NETWORK OPERATIVELY CONNECTED BETWEEN THE OUTPUT OF THE AMPLIFYING MEANS AND THE THRESHOLD DETECTOR, MEANS TO MONITOR A CONDITION OF THE ERROR SIGNAL VOLTAGE, AND SAID MONITOR MEANS BEING CONTROLLED BY THE THRESHOLD DETECTOR IN RESPONSE TO THE PULSE TRAIN AS OPERATIVELY SENSED THROUGH THE SAMPLE AND HOLD NETWORK AFTER A PREDETERMINED DELAY PERIOD.
Claim 3
Dependent Claim
163 words
A SAMPLE AND HOLD NETWORK COMPRISING A FIRST CAPACITOR, MEAS TO OPERATIVELY CONNECT THE FIRST CAPACITOR TO AN OUTPUT CHAIN OF VOLTAGE PULSES SO AS TO EFFECT A CHARGING OF THE FIRST CAPACITOR AT A RELATIVELY RAPID RATE BY A LEADING EDGE OF A VOLTAGE PULSE OF THE CHAIN OF PULSES OF SAID OUTPUT, A SECOND CAPACITOR, A SWITCH MEANS CONTROLLED BY THE CHARGE APPLIED TO THE FIRST CAPACITOR TO MAINTAIN INEFFECTIVE A DISCHARGING CIRCUIT FOR THE SECOND CAPACITOR, A RESISTOR OPERATIVELY CONNECTED BETWEEN THE OUTPUT CHAIN OF VOLTAGE PULSES AND THE SECOND CAPACITOR TO RENDER THE CHAIN OF PULSES OF THEOUTPUT EFFECTIVE TO CHARGE THE SECOND CAPACITOR AT A RELATIVELY SLOWER RATE TO A PREDETERMINED LEVEL, AND OTHER MEANS EFFECTIVE UPON A DISCONTINUANCE OF THE CHARGING CHAIN OF VOLTAGE PULSES TO DISCHARGE SAID FIRST CAPACITOR SO AS TO CAUSE THE SWITCH MEANS TO THEREAFTER RENDER EFFECTIVE THE DISCHARGING CIRCUIT FOR THE SECOND CAPACITOR UPON A DISCONTINUANCE OF THE CHAIN OF VOLTAGE PULSES.
Claim 4
Dependent Claim
163 words
A SAMPLE AND HOLD NETWORK COMPRISING A FIRST CAPACITOR, MEAS TO OPERATIVELY CONNECT THE FIRST CAPACITOR TO AN OUTPUT CHAIN OF VOLTAGE PULSES SO AS TO EFFECT A CHARGING OF THE FIRST CAPACITOR AT A RELATIVELY RAPID RATE BY A LEADING EDGE OF A VOLTAGE PULSE OF THE CHAIN OF PULSES OF SAID OUTPUT, A SECOND CAPACITOR, A SWITCH MEANS CONTROLLED BY THE CHARGE APPLIED TO THE FIRST CAPACITOR TO MAINTAIN INEFFECTIVE A DISCHARGING CIRCUIT FOR THE SECOND CAPACITOR, A RESISTOR OPERATIVELY CONNECTED BETWEEN THE OUTPUT CHAIN OF VOLTAGE PULSES AND THE SECOND CAPACITOR TO RENDER THE CHAIN OF PULSES OF THEOUTPUT EFFECTIVE TO CHARGE THE SECOND CAPACITOR AT A RELATIVELY SLOWER RATE TO A PREDETERMINED LEVEL, AND OTHER MEANS EFFECTIVE UPON A DISCONTINUANCE OF THE CHARGING CHAIN OF VOLTAGE PULSES TO DISCHARGE SAID FIRST CAPACITOR SO AS TO CAUSE THE SWITCH MEANS TO THEREAFTER RENDER EFFECTIVE THE DISCHARGING CIRCUIT FOR THE SECOND CAPACITOR UPON A DISCONTINUANCE OF THE CHAIN OF VOLTAGE PULSES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |