US3340356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television cameras
Assignee: EMI Ltd
•
Filing: 1963-11-07
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Granted: 1967-09-05
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Expires: 1983-11-07
Abstract
No abstract record available.
Inventors
- 👤 James Ivanhoe John Penfound
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/10; H04N23/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A COLOR TELEVISION CAMERA ARRANGEMENT COMPRISING MEANS FOR PRODUCING AT LEAST TWO IMAGES OF A SCENE, A LIMINANCE TELEVISION PICK-UP TUBE WHICH PRODUCES A BRIGHTNESS SIGNAL OF RELATIVELY HIGH RESOLUTION IN RESPONSE TO ONE OF SAID IMAGES, ONE OR MORE OTHER TELEVISION PICKUP TUBES EACH RESPONSIVE TO A RESPECTIVE OTHER ONE OF SAID IMAGES TO PRODUCE A PLURALITY OF SIGNALS REPRESENTING COLOR COMPONENTS OF THE SCENE AT RELATIVELY LOW RESOLUTION, MEANS FOR COMBINING SAID COLOR SIGNALS TO PRODUCE A BRIGHTNESS SIGNAL OF RELATIVELY LOW RESOLUTION, AND MEANS FOR SUBTRACTING FROM SAID HIGH RESOLUTION SIGNAL A PROPORTION OF SAID LOW RESOLUTION SIGNAL OF SMALLER AMPLITUDE THAN SAID HIGH RESOLUTION SIGNAL, THEREBY TO PRODUCE FROM SAID SUBTRACTING MEANS AN OUTPUT BRIGHTNESS SIGNAL IN WHICH EDGES AND TRANSITIONS ARE EMPHASIZED.
Claim 2
Dependent Claim
127 words
A COLOR TELEVISION CAMERA ARRANGEMENT COMPRISING MEANS FOR PRODUCING AT LEAST TWO IMAGES OF A SCENE, A LIMINANCE TELEVISION PICK-UP TUBE WHICH PRODUCES A BRIGHTNESS SIGNAL OF RELATIVELY HIGH RESOLUTION IN RESPONSE TO ONE OF SAID IMAGES, ONE OR MORE OTHER TELEVISION PICKUP TUBES EACH RESPONSIVE TO A RESPECTIVE OTHER ONE OF SAID IMAGES TO PRODUCE A PLURALITY OF SIGNALS REPRESENTING COLOR COMPONENTS OF THE SCENE AT RELATIVELY LOW RESOLUTION, MEANS FOR COMBINING SAID COLOR SIGNALS TO PRODUCE A BRIGHTNESS SIGNAL OF RELATIVELY LOW RESOLUTION, AND MEANS FOR SUBTRACTING FROM SAID HIGH RESOLUTION SIGNAL A PROPORTION OF SAID LOW RESOLUTION SIGNAL OF SMALLER AMPLITUDE THAN SAID HIGH RESOLUTION SIGNAL, THEREBY TO PRODUCE FROM SAID SUBTRACTING MEANS AN OUTPUT BRIGHTNESS SIGNAL IN WHICH EDGES AND TRANSITIONS ARE EMPHASIZED.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |