US3134850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television control apparatus
Assignee: RCA Corp
•
Filing: 1951-09-11
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Granted: 1964-05-26
•
Expires: 1971-09-11
Abstract
No abstract record available.
Inventors
- 👤 Stuart W Seeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:31
CPC Classifications
H; H04; H04N; H04N11/00; H04N11/06; H04N11/12; H04N11/14; H04N11/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A COLOR TELEVISION RECEIVER ADAPTED TO RECEIVE A COLOR CARRIER WAVE WHICH IS PHASE-MODULATED BY VIDEO SIGNALS REPRESENTING A PLURALITY OF COLORS OF A SUBJECT, SIGNALTRANSFER APPARATUS COMPRISING, A SOURCE OF SUBSTANTIALLY CONSTANT CURRENT, A PLURALITY OF SUBSTANTIALLY SIMILAR CIRCUITS COUPLED TO SAID CONSTANT CURRENT SOURCE AND DIVIDING SAID CURRENT IN ACCORDANCE WITH THE IMPEDANCES OF SAID RESPECTIVE CIRCUITS, A VARIABLE IMPEDANCE DEVICE IN EACH OF SAID CIRCUITS HAVING A CONTROL TERMINAL, THE IMPEDANCE OF EACH OF SAID DEVICES BEING VARIABLE AS A FUNCTION OF THE RELATIVE PHASE OF TWO WAVES OF THE SAME FREQUENCY IMPRESSED UPON SAID CONTROL TERMINAL, A SOURCE OF A REFERENCE WAVE HAVING A FREQUENCY EQUAL TO SAID COLOR CARRIER WAVE FREQUENCY, AND MEANS IMPRESSING SAID COLOR CARRIER WAVE AND SAID REFERENCE WAVE UPON THE RESPECTIVE CONTROL TERMINALS OF SAID VARIABLE IMPEDANCE DEVICES IN SUCH A MANNER THAT SAID REFERENCE WAVE IS SUBSTANTIALLY IN PHASE WITH DIF-
Claim 2
Dependent Claim
152 words
IN A COLOR TELEVISION RECEIVER ADAPTED TO RECEIVE A COLOR CARRIER WAVE WHICH IS PHASE-MODULATED BY VIDEO SIGNALS REPRESENTING A PLURALITY OF COLORS OF A SUBJECT, SIGNALTRANSFER APPARATUS COMPRISING, A SOURCE OF SUBSTANTIALLY CONSTANT CURRENT, A PLURALITY OF SUBSTANTIALLY SIMILAR CIRCUITS COUPLED TO SAID CONSTANT CURRENT SOURCE AND DIVIDING SAID CURRENT IN ACCORDANCE WITH THE IMPEDANCES OF SAID RESPECTIVE CIRCUITS, A VARIABLE IMPEDANCE DEVICE IN EACH OF SAID CIRCUITS HAVING A CONTROL TERMINAL, THE IMPEDANCE OF EACH OF SAID DEVICES BEING VARIABLE AS A FUNCTION OF THE RELATIVE PHASE OF TWO WAVES OF THE SAME FREQUENCY IMPRESSED UPON SAID CONTROL TERMINAL, A SOURCE OF A REFERENCE WAVE HAVING A FREQUENCY EQUAL TO SAID COLOR CARRIER WAVE FREQUENCY, AND MEANS IMPRESSING SAID COLOR CARRIER WAVE AND SAID REFERENCE WAVE UPON THE RESPECTIVE CONTROL TERMINALS OF SAID VARIABLE IMPEDANCE DEVICES IN SUCH A MANNER THAT SAID REFERENCE WAVE IS SUBSTANTIALLY IN PHASE WITH DIF-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |