US3294904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyed a. g. c. with variable reactance for control of keying pulse amplitude
Assignee: Westinghouse Electric Corp
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Filing: 1963-08-14
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Granted: 1966-12-27
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Expires: 1983-08-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Percival
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:31
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/52; H04N5/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A TELEVISION RECEIVER ADAPTED TO RECEIVE A TELEVISION SIGNAL MODULATED BY VIDEO SIGNAL COMPONENTS AND PERIODIC SYNCHRONIZING-SIGNAL COMPONENTS, A SIGNAL CHANNEL INCLUDING MEANS FOR DEMODULATING SAID TELEVISION SIGNAL TO OBTAIN SAID VIDEO SIGNAL COMPONENTS AND SAID SYNCHRONIZING SIGNAL COMPONENTS, SAID SYNCHRONIZING COMPONENTS DEFINGING A RETRACE INTERVAL, MEANS FOR DEVELOPING TRIGGER PULSES DURING SAID RETRACE INTERVAL, AN AUTOMATIC GAIN CONTROL CIRCUIT INCLUDING AN ELECTRIC VALVE MEANS, MEANS APPLYING SAID TRIGGER PULSES TO SAID VALVE MEANS INCLUDING VARIABLE REACTANCE MEANS TO VARY THE AMPLITUDE OF SAID TRIGGER PULSES, AND SAID VALVE MEANS RESPONSIVE TO TIME COINCIDENCE OF SAID TRIGGER PULSES AND SAID SYNCHRONIZING SIGNAL COMPONENTS TO APPLY AN AUTOMATIC GAIN CONTROL SIGNAL TO SAID RECEIVER.
Claim 2
Dependent Claim
113 words
A TELEVISION RECEIVER ADAPTED TO RECEIVE A TELEVISION SIGNAL MODULATED BY VIDEO SIGNAL COMPONENTS AND PERIODIC SYNCHRONIZING-SIGNAL COMPONENTS, A SIGNAL CHANNEL INCLUDING MEANS FOR DEMODULATING SAID TELEVISION SIGNAL TO OBTAIN SAID VIDEO SIGNAL COMPONENTS AND SAID SYNCHRONIZING SIGNAL COMPONENTS, SAID SYNCHRONIZING COMPONENTS DEFINGING A RETRACE INTERVAL, MEANS FOR DEVELOPING TRIGGER PULSES DURING SAID RETRACE INTERVAL, AN AUTOMATIC GAIN CONTROL CIRCUIT INCLUDING AN ELECTRIC VALVE MEANS, MEANS APPLYING SAID TRIGGER PULSES TO SAID VALVE MEANS INCLUDING VARIABLE REACTANCE MEANS TO VARY THE AMPLITUDE OF SAID TRIGGER PULSES, AND SAID VALVE MEANS RESPONSIVE TO TIME COINCIDENCE OF SAID TRIGGER PULSES AND SAID SYNCHRONIZING SIGNAL COMPONENTS TO APPLY AN AUTOMATIC GAIN CONTROL SIGNAL TO SAID RECEIVER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |