US3202926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gain control signal generator
Assignee: Texas Instruments Inc
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Filing: 1961-06-16
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Granted: 1965-08-24
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Expires: 1981-06-16
Abstract
No abstract record available.
Inventors
- 👤 Walter B Ford
- 👤 Gerald R Schlechte
- 👤 Jr Markwick K Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:16
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/24; G01; G01V; G01V1/00; G01V1/24; G01V1/245; H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN APPARATUS FOR PROVIDING A HIGH FREQUENCY GAIN CONTROL SIGNAL TO A SEISMIC AMPLIFIER: (A) A SOURCE OF HIGH FREQUENCY SIGNALS, (B) VARIABLE-ATTENUATION COUPLING MEANS CONNECTING THE SOURCE TO THE GAIN CONTROLLED SEISMIC AMPLIFIER, THE COUPLING MEANS BEING VARIABLE IN ATTENUATION IN RESPONSE TO A CONTROL VOLTAGE, (C) MEANS HAVING AN INPUT CONNECTED TO RECEIVE THE HIGH FREQUENCY SIGNALS APPLIED TO THE SEISMIC AMPLIFIER EFFECTIVE TO PRODUCE A FIRST VOLTAGE VARIABLE ACCORDING TO THE MAGNITUDE OF SUCH SIGNALS, (D) RESISTANCE-CAPACITANCE NETWORK FOR GENERATING A SECOND VOLTAGE WHICH VARIES ACCORDING TO AN EXPONTENTIAL FUNCTION OF TIME BETWEEN FIRST AND SECOND VOLTAGE LEVELS, SAID NETWORK INCLUDING MEANS TO VARY SAID FIRST AND SECOND VOLTAGE LEVELS AND THE RATE OF CHANGE OF SAID EXPONTENTIAL FUNCTION, (E) MEANS FOR INITIATING THE OPERATION OF THE RESISTANCECAPACITANCE NETWORK IN RESPONSE TO A CONDITION,
Claim 2
Dependent Claim
137 words
IN APPARATUS FOR PROVIDING A HIGH FREQUENCY GAIN CONTROL SIGNAL TO A SEISMIC AMPLIFIER: (A) A SOURCE OF HIGH FREQUENCY SIGNALS, (B) VARIABLE-ATTENUATION COUPLING MEANS CONNECTING THE SOURCE TO THE GAIN CONTROLLED SEISMIC AMPLIFIER, THE COUPLING MEANS BEING VARIABLE IN ATTENUATION IN RESPONSE TO A CONTROL VOLTAGE, (C) MEANS HAVING AN INPUT CONNECTED TO RECEIVE THE HIGH FREQUENCY SIGNALS APPLIED TO THE SEISMIC AMPLIFIER EFFECTIVE TO PRODUCE A FIRST VOLTAGE VARIABLE ACCORDING TO THE MAGNITUDE OF SUCH SIGNALS, (D) RESISTANCE-CAPACITANCE NETWORK FOR GENERATING A SECOND VOLTAGE WHICH VARIES ACCORDING TO AN EXPONTENTIAL FUNCTION OF TIME BETWEEN FIRST AND SECOND VOLTAGE LEVELS, SAID NETWORK INCLUDING MEANS TO VARY SAID FIRST AND SECOND VOLTAGE LEVELS AND THE RATE OF CHANGE OF SAID EXPONTENTIAL FUNCTION, (E) MEANS FOR INITIATING THE OPERATION OF THE RESISTANCECAPACITANCE NETWORK IN RESPONSE TO A CONDITION,
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |