US3284659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for combining "a" and "b" type displays on an oscilloscope having a "b" type sweep circuit
Assignee: EMI Ltd
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Filing: 1964-01-09
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Granted: 1966-11-08
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Expires: 1984-01-09
Abstract
No abstract record available.
Inventors
- 👤 Outhouse Laurence Edmund
- 👤 Covill Dennis Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:57
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/28; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A METHOD OF COMBINING "A" TYPE DISPLAYS IN A "B" TYPE SWEEP OSCILLOSCOPE HAVING INPUT TERMINALS ASSOCIATED WITH THE CONTROL GRID AND THE FREQUENCY COIL OF THE DEFLECTION YOKE AND AN OUTPUT TERMINAL ASSOCIATED WITH THE FREQUENCY SWEEP WAVEFORM, SAID METHOD INCLUDING THE STEPS OF: (I) SWITCHING AN INCOMING SIGNAL ALTERNATELY BETWEEN SAID CONTROL GRID AND SAID FREQUENCY COIL OF THE SAID DEFLECTION YOKE, (II) PROVIDING A VARIABLE FREQUENCY TRIGGER CIRCUIT TO CONTROL SAID SWITCHING OPERATION, (III) UTILIZING SAID FREQUENCY SWEEP WAVEFORM TO CONTROL SAID TRIGGER CIRCUIT, AND (IV) VARYING SAID TRIGGER FREQUENCY UNTIL IT IS SYNCHRONISED WITH A SELECTED FREQUENCY.
Claim 2
Independent Claim
101 words
A METHOD OF COMBINING "A" TYPE DISPLAYS IN A "B" TYPE SWEEP OSCILLOSCOPE HAVING INPUT TERMINALS ASSOCIATED WITH THE CONTROL GRID AND THE FREQUENCY COIL OF THE DEFLECTION YOKE AND AN OUTPUT TERMINAL ASSOCIATED WITH THE FREQUENCY SWEEP WAVEFORM, SAID METHOD INCLUDING THE STEPS OF: (I) SWITCHING AN INCOMING SIGNAL ALTERNATELY BETWEEN SAID CONTROL GRID AND SAID FREQUENCY COIL OF THE SAID DEFLECTION YOKE, (II) PROVIDING A VARIABLE FREQUENCY TRIGGER CIRCUIT TO CONTROL SAID SWITCHING OPERATION, (III) UTILIZING SAID FREQUENCY SWEEP WAVEFORM TO CONTROL SAID TRIGGER CIRCUIT, AND (IV) VARYING SAID TRIGGER FREQUENCY UNTIL IT IS SYNCHRONISED WITH A SELECTED FREQUENCY.
References Cited (Backward Citations)
US3167680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |