US3315033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor clamp circuit for altering the direct current component of a television signal
Assignee: Robert Bosch Fernsehanlagen GmbH
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Filing: 1963-07-10
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Granted: 1967-04-18
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Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Sennhenn Emil
- 👤 Horneff Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/16; H04N5/18; H04N5/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
APPARATUS FOR ALTERING THE DIRECT CURRENT COMPONENT OF A TELEVISION SIGNAL BEING COMPOSED OF PICTURE SIGNAL COMPONENTS AND FURTHER SIGNAL COMPONENTS, THE PEAK LEVELS OF SAID FURTHER SIGNAL COMPONENTS NOT EXCEEDING THE PEAK LEVELS OF SAID PICTURE SIGNAL COMPONENTS, IN SUCH A WAY THAT THE SIGNAL POTENTIALS CORRESPONDING TO THE PEAK LEVELS OF SAID TELEVISION SIGNAL ARE HELD APPROXIMATELY AT A PREDETERMINED POTENTIAL, SAID TELEVISION SIGNAL BEING CONDUCTED WITHIN A FIRST SIGNAL CHANNEL, COMPRISING IN COMBINATION, A CAPACITOR; A TRANSISTOR; CONNECTION MEANS CONNECTING ONE FIRST POINT OF SAID FIRST SIGNAL CHANNEL WITHIN A SECOND SIGNAL CHANNEL VIA SAID CAPACITOR TO THE BASE OF SAID TRANSISTOR; CONNECTION MEANS CONNECTING THE EMITTER COLLECTOR PATH OF SAID TRANSISTOR WITH A SECOND POINT OF SAID FIRST SIGNAL CHANNEL AND TO A POINT HELD AT SAID PREDETERMINED POTENTIAL; A RESISTOR; AND FURTHER CONNECTION MEANS CONNECTING THE BASE OF SAID TRANSISTOR VIA SAID RESISTOR TO ITS EMITTER.
Claim 2
Dependent Claim
151 words
APPARATUS FOR ALTERING THE DIRECT CURRENT COMPONENT OF A TELEVISION SIGNAL BEING COMPOSED OF PICTURE SIGNAL COMPONENTS AND FURTHER SIGNAL COMPONENTS, THE PEAK LEVELS OF SAID FURTHER SIGNAL COMPONENTS NOT EXCEEDING THE PEAK LEVELS OF SAID PICTURE SIGNAL COMPONENTS, IN SUCH A WAY THAT THE SIGNAL POTENTIALS CORRESPONDING TO THE PEAK LEVELS OF SAID TELEVISION SIGNAL ARE HELD APPROXIMATELY AT A PREDETERMINED POTENTIAL, SAID TELEVISION SIGNAL BEING CONDUCTED WITHIN A FIRST SIGNAL CHANNEL, COMPRISING IN COMBINATION, A CAPACITOR; A TRANSISTOR; CONNECTION MEANS CONNECTING ONE FIRST POINT OF SAID FIRST SIGNAL CHANNEL WITHIN A SECOND SIGNAL CHANNEL VIA SAID CAPACITOR TO THE BASE OF SAID TRANSISTOR; CONNECTION MEANS CONNECTING THE EMITTER COLLECTOR PATH OF SAID TRANSISTOR WITH A SECOND POINT OF SAID FIRST SIGNAL CHANNEL AND TO A POINT HELD AT SAID PREDETERMINED POTENTIAL; A RESISTOR; AND FURTHER CONNECTION MEANS CONNECTING THE BASE OF SAID TRANSISTOR VIA SAID RESISTOR TO ITS EMITTER.
References Cited (Backward Citations)
US3013116A
Cited
FR1218764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |