US3328519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminance amplifier circuitry for a color television amplifier
Assignee: RCA Corp
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Filing: 1965-05-14
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Granted: 1967-06-27
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Expires: 1985-05-14
Abstract
No abstract record available.
Inventors
- 👤 Donald H Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:18
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/57; H04N5/14; H04N5/148; H04N9/00; H04N9/64; H04N9/648; H04N9/77
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
214 words
A LUMINANCE CHANNEL FOR A COLOR TELEVISION RECEIVER HAVING A CHROMINANCE CHANNEL WHICH INTRODUCES A TIME DELAY OF A PREDETERMINED AMOUNT IN THE TRANSLATION OF CHROMINANCE SIGNAL INFORMATION TO THE PICTURE TUBE THEREOF, SAID LUMINANCE CHANNEL COMPRISING: VIDEO DETECTOR MEANS INCLUDING A LOAD IMPEDANCE ELEMENT FOR DEVELOPING VIDEO FREQUENCY SIGNAL IMFORMATION; AN AMPLIFIER STAGE INCLUDING AN AMPLIFIER DEVICE HAVING A CONTROL ELECTRODE AND A FURTHER PAIR OF ELECTRODES; LOAD IMPEDANCE MEANS FOR SAID AMPLIFIER STAGE INCLUDING A TIME-DELAY NETWORK EXHIBITING A TIME DELAY OF SAID PREDETERMINED AMOUNT; MEANS FOR APPLYING AT LEAST A PORTION OF THE LOW VIDEO FREQUENCY SIGNAL COMPONENTS DEVELOPED ACROSS THE LOAD IMPEDANCE ELEMENT OF SAID VIDEO DETECTOR BETWEEN SAID CONTROL ELECTRODE AND ONE OF SAID FURTHER PAIR OF ELECTRODES, FOR CAUSING SAID AMPLIFIER TO OPERATE AS A FOLLOWER AMPLIFIER FOR THE LOWER VIDEO FREQUENCY COMPONENTS; MEANS INCLUDING A CAPACITOR FOR APPLYING AT LEAST A PORTION OF THE HIGHER VIDEO FREQUENCY SIGNAL COMPONENTS DEVELOPED ACROSS THE LOAD IMPEDANCE ELEMENT OF SAID VIDEO DETECTOR BETWEEN SAID CONTROL ELECTRODE AND THE OTHER OF SAID FURTHER PAIR OF ELECTRODES FOR CAUSING SAID AMPLIFIER TO OPERATE AT HIGHER GAIN FOR THE HIGHER VIDEO FREQUENCY SIGNAL COMPONENTS, AND UTILIZATION CIRCUIT MEANS COUPLED TO SAID OTHER OF SAID FURTHER PAIR OF ELECTRODES THROUGH SAID TIME DELAY NETWORK.
Claim 2
Dependent Claim
214 words
A LUMINANCE CHANNEL FOR A COLOR TELEVISION RECEIVER HAVING A CHROMINANCE CHANNEL WHICH INTRODUCES A TIME DELAY OF A PREDETERMINED AMOUNT IN THE TRANSLATION OF CHROMINANCE SIGNAL INFORMATION TO THE PICTURE TUBE THEREOF, SAID LUMINANCE CHANNEL COMPRISING: VIDEO DETECTOR MEANS INCLUDING A LOAD IMPEDANCE ELEMENT FOR DEVELOPING VIDEO FREQUENCY SIGNAL IMFORMATION; AN AMPLIFIER STAGE INCLUDING AN AMPLIFIER DEVICE HAVING A CONTROL ELECTRODE AND A FURTHER PAIR OF ELECTRODES; LOAD IMPEDANCE MEANS FOR SAID AMPLIFIER STAGE INCLUDING A TIME-DELAY NETWORK EXHIBITING A TIME DELAY OF SAID PREDETERMINED AMOUNT; MEANS FOR APPLYING AT LEAST A PORTION OF THE LOW VIDEO FREQUENCY SIGNAL COMPONENTS DEVELOPED ACROSS THE LOAD IMPEDANCE ELEMENT OF SAID VIDEO DETECTOR BETWEEN SAID CONTROL ELECTRODE AND ONE OF SAID FURTHER PAIR OF ELECTRODES, FOR CAUSING SAID AMPLIFIER TO OPERATE AS A FOLLOWER AMPLIFIER FOR THE LOWER VIDEO FREQUENCY COMPONENTS; MEANS INCLUDING A CAPACITOR FOR APPLYING AT LEAST A PORTION OF THE HIGHER VIDEO FREQUENCY SIGNAL COMPONENTS DEVELOPED ACROSS THE LOAD IMPEDANCE ELEMENT OF SAID VIDEO DETECTOR BETWEEN SAID CONTROL ELECTRODE AND THE OTHER OF SAID FURTHER PAIR OF ELECTRODES FOR CAUSING SAID AMPLIFIER TO OPERATE AT HIGHER GAIN FOR THE HIGHER VIDEO FREQUENCY SIGNAL COMPONENTS, AND UTILIZATION CIRCUIT MEANS COUPLED TO SAID OTHER OF SAID FURTHER PAIR OF ELECTRODES THROUGH SAID TIME DELAY NETWORK.
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |