US3303272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colour television systems
Assignee: Communications Patents Ltd
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Filing: 1964-02-19
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Granted: 1967-02-07
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Expires: 1984-02-19
Abstract
No abstract record available.
Inventors
- 👤 Gargini Eric John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:44
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A COLOUR TELEVISION SYSTEM WHEREIN A LOW DEFINITION SIGNAL IN RESPECT OF COLOR IS USED IN CONJUNCTION WITH A COMPARATIVELY HIGH DEFINITION SIGNAL IN RESPECT OF DETAIL TO ESTABLISH A COMPOSITE DISPLAY DEPICTING A TELEVISED SCENE, THE PROVISION OF A COLOUR TELEVISION PICTURE SIGNAL SOURCE FOR PROVIDING HIGH DEFINITION COLOUR SIGNALS IN RESPECT OF EACH OF A PLURALITY OF ANALYZING PRIMARY COLOURS, COMBINING MEANS FOR COMBINING SAID COLOUR SIGNALS TO FORM AN EQUAL ENERGY SIGNAL, CORRECTING SIGNAL GENERATING MEANS RESPONSIVE TO SAID COLOUR SIGNALS FOR GENERATING A CORRECTING SIGNAL WHICH FOR A SATURATED PRIMARY AND A SATURATED COMPLEMENTARY COLOUR HAS AN AMPLITUDE CORRESPONDING TO THAT OF SAID EQUAL ENERGY SIGNAL, AND SIGNAL SUBTRACTING MEANS FOR SUBTRACTING SAID CORRECTING SIGNAL FROM THE EQUAL ENERGY SIGNAL TO FORM A HIGH DEFINITION SIGNAL WHICH IS REPRESENTATIVE OF THE WHITE LIGHT CONTENT OF SAID TELEVISED SCENE.
Claim 2
Dependent Claim
143 words
IN A COLOUR TELEVISION SYSTEM WHEREIN A LOW DEFINITION SIGNAL IN RESPECT OF COLOR IS USED IN CONJUNCTION WITH A COMPARATIVELY HIGH DEFINITION SIGNAL IN RESPECT OF DETAIL TO ESTABLISH A COMPOSITE DISPLAY DEPICTING A TELEVISED SCENE, THE PROVISION OF A COLOUR TELEVISION PICTURE SIGNAL SOURCE FOR PROVIDING HIGH DEFINITION COLOUR SIGNALS IN RESPECT OF EACH OF A PLURALITY OF ANALYZING PRIMARY COLOURS, COMBINING MEANS FOR COMBINING SAID COLOUR SIGNALS TO FORM AN EQUAL ENERGY SIGNAL, CORRECTING SIGNAL GENERATING MEANS RESPONSIVE TO SAID COLOUR SIGNALS FOR GENERATING A CORRECTING SIGNAL WHICH FOR A SATURATED PRIMARY AND A SATURATED COMPLEMENTARY COLOUR HAS AN AMPLITUDE CORRESPONDING TO THAT OF SAID EQUAL ENERGY SIGNAL, AND SIGNAL SUBTRACTING MEANS FOR SUBTRACTING SAID CORRECTING SIGNAL FROM THE EQUAL ENERGY SIGNAL TO FORM A HIGH DEFINITION SIGNAL WHICH IS REPRESENTATIVE OF THE WHITE LIGHT CONTENT OF SAID TELEVISED SCENE.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |