Patent US3351867A successfully refreshed from Google Patents.
US3351867A
Expired / Lapsed
US
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Circuit arrangement for varying the level of a signal
Assignee: Robert Bosch Fernsehanlagen GmbH
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Filing: 1964-04-15
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Granted: 1967-11-07
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Expires: 1984-04-15
Abstract
No abstract record available.
Inventors
- 👤 Jauernik Edmund
- 👤 Bopp Achim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:44
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0052; H04; H04N; H04N5/00; H04N5/14; H04N5/20; H04N5/44; H04N5/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
AN ELECTRONIC CIRCUIT ARRANGEMENT FOR VARYING THE LEVEL OF A SIGNAL COMPRISING, IN COMBINATION, A VOLTAGE SOURCE HAVING A FIRST POLARITY TERMINAL AND A SECOND POLARITY TERMINAL; FOUR NON-LINEAR CIRCUIT ELEMENTS HAVING NON-LINEAR VOLTAGE/CURRENT CHARACTERISTICS AND CONNECTED IN SEQUENCE AS A FOUR-ARMED BRIDGE FOR FOUR CONSECUTIVE BRIDGE TERMINALS, THE FIRST ONE OF WHICH IS CONNECTED TO SAID FIRST POLARITY TERMINAL; VARIABLE RESISTOR MEANS CONNECTED BETWEEN SAID SECOND POLARITY TERMINAL AND THE THIRD CONSECUTIVE BRIDGE TERMINAL; FIRST AMPLIFIER MEANS CONNECTED TO SAID VOLTAGE SOURCE FOR PROVIDING OPERATING VOLTAGES THERETO AND HAVING AN OUTPUT CONNECTED TO THE SECOND CONSECUTIVE BRIDGE TERMINAL FOR APPLYING A VOLTAGE SIGNAL TO SAID BRIDGE; AND SECOND AMPLIFIER MEANS CONNECTED TO SAID VOLTAGE SOURCE FOR PROVIDING OPERATING VOLTAGES THERETO AND HAVING AN INPUT CONNECTED TO THE FOURTH CONSECUTIVE BRIDGE TERMINAL; WHEREBY SAID BRIDGE IS A COUPLING NETWORK BETWEEN SAID FIRST AND SECOND AMPLIFIER MEANS TO VARY THE LEVEL OF A SIGNAL APPLIED TO SAID FIRST AMPLIFIER MEANS BY VARYING SAID VARIABLE RESISTOR MEANS.
Claim 2
Dependent Claim
165 words
AN ELECTRONIC CIRCUIT ARRANGEMENT FOR VARYING THE LEVEL OF A SIGNAL COMPRISING, IN COMBINATION, A VOLTAGE SOURCE HAVING A FIRST POLARITY TERMINAL AND A SECOND POLARITY TERMINAL; FOUR NON-LINEAR CIRCUIT ELEMENTS HAVING NON-LINEAR VOLTAGE/CURRENT CHARACTERISTICS AND CONNECTED IN SEQUENCE AS A FOUR-ARMED BRIDGE FOR FOUR CONSECUTIVE BRIDGE TERMINALS, THE FIRST ONE OF WHICH IS CONNECTED TO SAID FIRST POLARITY TERMINAL; VARIABLE RESISTOR MEANS CONNECTED BETWEEN SAID SECOND POLARITY TERMINAL AND THE THIRD CONSECUTIVE BRIDGE TERMINAL; FIRST AMPLIFIER MEANS CONNECTED TO SAID VOLTAGE SOURCE FOR PROVIDING OPERATING VOLTAGES THERETO AND HAVING AN OUTPUT CONNECTED TO THE SECOND CONSECUTIVE BRIDGE TERMINAL FOR APPLYING A VOLTAGE SIGNAL TO SAID BRIDGE; AND SECOND AMPLIFIER MEANS CONNECTED TO SAID VOLTAGE SOURCE FOR PROVIDING OPERATING VOLTAGES THERETO AND HAVING AN INPUT CONNECTED TO THE FOURTH CONSECUTIVE BRIDGE TERMINAL; WHEREBY SAID BRIDGE IS A COUPLING NETWORK BETWEEN SAID FIRST AND SECOND AMPLIFIER MEANS TO VARY THE LEVEL OF A SIGNAL APPLIED TO SAID FIRST AMPLIFIER MEANS BY VARYING SAID VARIABLE RESISTOR MEANS.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |