US3588321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for modifying the color information of a television signal
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1968-06-12
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Granted: 1971-06-28
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Expires: 1988-06-12
Abstract
Abstract CIRCUITS FOR MODIFYING THE COLOR INFORMATION CONTAINED IN A COLOR TELEVISION SIGNAL BY PRODUCING, FROM THE MODULATED PERMANENT SUBCARRIER OF THE ORIGINALLY PRODUCER VIDEO SIGNAL PORTION, AN ADDITIONAL SIGNAL WHOSE AMPLITUDE AND PHASE IS A PREDETERMINED FUNCTION OF THE AMPLITUDE AND PHASE OF SUCH PERMANENT SUBCARRIER, AND ADDING THE ADDITIONAL SIGNAL TO THE MODULATED PERMANENT SUBCARRIER OF THE ORIGINALLY PRODUCED VIDEO SIGNAL FOR PROVIDING A NEW PERMANENT SUBCARRIER CONTAINING COLOR INFORMATION WHICH IS MODIFIED RELATIVE TO THAT CONTAINED IN THE PERMANENT SUBCARRIER OF THE ORIGINALLY PRODUCED VIDEO SIGNAL.
Inventors
- 👤 Walter Dr Bruch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:52
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/643
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |