US3202758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subscription-television programscrambling system
Assignee: Paramount Pictures Corp
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Filing: 1961-11-09
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Granted: 1965-08-24
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Expires: 1981-11-09
Abstract
No abstract record available.
Inventors
- 👤 Brownstein George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:42
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/16; H04N7/162; H04N7/163; H04N7/164
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
IN A SUBSCRIPTION-TELEVISION SYSTEM OF THE TYPE WHEREIN A TRANSMITTER INCLUDES MEANS FOR GENERATING PROGRAM AUDIO SIGNALS MODULATED ON A CARRIER AND MEANS FOR GENERATING VIDEO SIGNALS INCLUDING LINE SIGNALS MODULATED ON A CARRIER, THE IMPROVEMENT COMPRISING MEANS FOR GENERATING SPOILING SIGNALS HAVING A FREQUENCY SELECTED SUCH THAT WHEN PRESENTD TO THE INPUT OF A RECEIVER TOGETHER WITH SAID VIDEO SIGNALS SAID RECEIVE WILL NOT INTELLIGIBLY REPRODUCE SAID VIDEO SIGNALS, SAID SPOILING-SIGNAL FREQUENCY FURTHER BEING SELECTED TO BE AN ODD MULTIPLE OF ONE-HALF THE LINE-SIGNAL FREQUENCY, MEANS FOR GENERATING BARKER AUDIO SIGNALS MODULATED ON A CARRIER, SAID BARKER AUDIO SIGNAL CARRIER HAVING A FREQUENCY OF 4.5 MEGACYCLES ABOVE THE
References Cited (Backward Citations)
US2847500A
Cited
US2905747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |