US3258532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic-picture-control circuit for a television receiver
Assignee: Hazeltine Research Inc
•
Filing: 1963-03-12
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Granted: 1966-06-28
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Expires: 1983-03-12
Abstract
No abstract record available.
Inventors
- 👤 Bernard D Loughlin
- 👤 Stephen P Ronzheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:45
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/57; H04N5/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
AN AUTOMATIC-PICTURE-CONTROL CIRCUIT FOR A TELEVISION RECEIVER COMPRISING: MEANS FOR SUPPLYING A TELEVISION SIGNAL INCLUDING A PICTURE-REPRESENTATIVE PORTION; MEANS INCLUDING A CATHODE-RAY TUBE FOR REPRODUCING SAID PICTURE FROM SAID SIGNAL PORTION; MEANS FOR COUPLING SAID SIGNAL PORTION TO THE CATHODERAY TUBE TO EFFECTIVELY MAINTAIN BLACK LEVEL IN THE REPRODUCED PICTURE OVER A PORTION OF THE RANGE OF AVERAGE BRIGHTNESS LEVELS IN THE PICTURE SIGNAL;
Claim 2
Dependent Claim
64 words
AN AUTOMATIC-PICTURE-CONTROL CIRCUIT FOR A TELEVISION RECEIVER COMPRISING: MEANS FOR SUPPLYING A TELEVISION SIGNAL INCLUDING A PICTURE-REPRESENTATIVE PORTION; MEANS INCLUDING A CATHODE-RAY TUBE FOR REPRODUCING SAID PICTURE FROM SAID SIGNAL PORTION; MEANS FOR COUPLING SAID SIGNAL PORTION TO THE CATHODERAY TUBE TO EFFECTIVELY MAINTAIN BLACK LEVEL IN THE REPRODUCED PICTURE OVER A PORTION OF THE RANGE OF AVERAGE BRIGHTNESS LEVELS IN THE PICTURE SIGNAL;
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |