US3333055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for increasing the signal-to-noise ratio of a television signal
Assignee: Robert Bosch Fernsehanlagen GmbH
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Filing: 1964-05-28
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Granted: 1967-07-25
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Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Krause Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:44
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/911; H04N5/14; H04N5/20; H04N5/205
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
139 words
APPARATUS FOR INCREASING THE SIGNAL-TO-NOISE RATIO OF A TELEVISION SIGNAL, COMPRISING MEANS FOR APPLYING SAID SIGNAL EQUALLY TO A HIGH-PASS AND TO A LOW-PASS FILTER, SAID FILTERS HAVING A COMMON CUT-OFF FREQUENCY, MEANS FOR APPLYING THE OUTPUT FROM SAID HIGH-PASS FILTER TO A THRESHOLD CIRCUIT ARRANGED TO PASS ONLY SIGNALS OF WHICH THE AMPLITUDE EXCEEDS A PREDETERMINED LEVEL, A TRIGGER DEVICE FED WITH OUTPUT SIGNALS FROM SAID THRESHOLD CIRCUIT AND OPERATING TO PROVIDE SIGNALS OF CONSTANT AMPLITUDE COINCIDENT THEREWITH, A CONNECTION FROM THE OUTPUT OF SAID HIGH-PASS FILTER TO AN OUTPUT TERMINAL CONTROLLED BY AN ELECTRONIC SWITCH, A DIRECT CONNECTION FROM THE OUTPUT OF SAID LOW-PASS FILTER TO SAID OUTPUT TERMINAL, AND MEANS FOR APPLYING OUTPUT SIGNALS FROM SAID TRIGGER DEVICE TO CLOSE SAID ELECTRONIC SWITCH AND ALLOW SIGNALS FROM SAID HIGHPASS FILTER TO PASS TO SAID OUTPUT TERMINAL.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |