US3588871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant writing rate display control apparatus
Assignee: Honeywell Inc
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Filing: 1969-03-12
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Granted: 1971-06-28
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Expires: 1989-03-12
Abstract
Abstract A FUNCTION GENERATOR FOR CONVERTING DIGITAL SIGNALS INDICATIVE OF QUADRATURE COMPONENTS OF A VECTOR INTO ANALOG SIGNALS INDICATIVE OF THE COMPONENTS. THE FUNCTION GENERATOR PRODUCES A TIME VARIED RAMP, THE TIME OF WHICH IS A FUNCTION OF THE APPROXIMATE VECTOR ADDITION OF THE DIGITAL INPUT SIGNALS. THE RAMP ALWAYS VARIES BETWEEN THE SAME TWO VOLTAGES SO THAT WHEN IT IS APPLIED TO A PAIR OF DIGITAL TO ANALOG CONVERTERS HAVING THE DIGITAL SIGNAL INPUTS, THE RESULTING OUTPUTS WILL PRODUCE CONSTANT WRITING RATE VECTOR SIGNALS.
Inventors
- 👤 James T Shiosaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:40
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/06; G09G1/08
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 |