Patent US3149260A successfully refreshed from Google Patents.
US3149260A
Expired / Lapsed
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Line-field distortion cross-current compensating circuit
Assignee: BAE Systems Electronics Ltd
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Filing: 1961-07-17
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Granted: 1964-09-15
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Expires: 1981-07-17
Abstract
No abstract record available.
Inventors
- 👤 Davies Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:21
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/76; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/22; H04N3/23; H04N3/237; H01J2229/00; H01J2229/96; H01J2229/964
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A LINE RASTER TELEVISION SCANNING CIRCUIT ARRANGEMENT OF THE KIND EMPLOYING LINE SCANNING COILS FED FROM A LINE FREQUENCY CURRENT WAVE SOURCE, AND FIELD SCANNING COILS FED FROM A FIELD FREQUENCY CURRENT WAVE SOURCE, SAID ARRANGEMENT COMPRISING A CORRECTING CIRCUIT COUPLED BETWEEN THE LINE SCANNING COIL CIRCUIT AND THE FIELD SCANNING COIL CIRCUIT, SAID COUPLING CIRCUIT BEING DIMENSIONED AND ARRANGED TO INJECT INTO THE FIELD SCANNING COIL CIRCUIT A CORRECTION VOLTAGE WHICH SUBSTANTIALLY COMPENSATES FOR RASTER DISTORTION CURRENT COMPONENTS INDUCED INTO THE FIELD SCANNING COIL CIRCUIT AS A RESULT OF CROSS COUPLING BETWEEN THE LINE AND FIELD COILS.
Claim 2
Dependent Claim
98 words
A LINE RASTER TELEVISION SCANNING CIRCUIT ARRANGEMENT OF THE KIND EMPLOYING LINE SCANNING COILS FED FROM A LINE FREQUENCY CURRENT WAVE SOURCE, AND FIELD SCANNING COILS FED FROM A FIELD FREQUENCY CURRENT WAVE SOURCE, SAID ARRANGEMENT COMPRISING A CORRECTING CIRCUIT COUPLED BETWEEN THE LINE SCANNING COIL CIRCUIT AND THE FIELD SCANNING COIL CIRCUIT, SAID COUPLING CIRCUIT BEING DIMENSIONED AND ARRANGED TO INJECT INTO THE FIELD SCANNING COIL CIRCUIT A CORRECTION VOLTAGE WHICH SUBSTANTIALLY COMPENSATES FOR RASTER DISTORTION CURRENT COMPONENTS INDUCED INTO THE FIELD SCANNING COIL CIRCUIT AS A RESULT OF CROSS COUPLING BETWEEN THE LINE AND FIELD COILS.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |