US3863099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic deflection display system including dual mode deflection amplifiers and output power limited power supplies
Assignee: Bendix Corp
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Filing: 1973-06-28
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Granted: 1975-01-28
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Expires: 1993-06-28
Abstract
Abstract An electromagnetic deflection display system for both random stroke and raster displays provides larger, faster and brighter displays with reduced power consumption and physical size. Dual mode deflection amplifiers having independent linear and slew characteristics provide reduced slewing time without any significant increase in power consumption and system power is limited to a predetermined average value to reduce system size and weight.
Inventors
- 👤 Jr Abner Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:50
CPC Classifications
H; H03; H03K; H03K6/00; H03K6/02; G; G09; G09G; G09G1/00; G09G1/005; G09G1/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
An electromagnetic deflection display system, comprising: means for providing deflection signals; deflection display means; power supply means providing linear mode output power and slew mode output power for powering the deflection display means, said power supply means operating at a predetermined duty cycle with the output power therefrom being at a predetermined average value; and deflection amplifier means connected to the deflection signal means, the power supply and the display means, and operative in a linear mode for initially applying the linear mode output power to the deflection display means and responsive to a rate of change of the deflection signals above a predetermined rate for switching to a slew mode of operation to apply the slew mode output power to the deflection display means, said linear and slew modes being independent of each other for reduction slew time without increasing power consumption.
Claim 2
Dependent Claim
143 words
An electromagnetic deflection display system, comprising: means for providing deflection signals; deflection display means; power supply means providing linear mode output power and slew mode output power for powering the deflection display means, said power supply means operating at a predetermined duty cycle with the output power therefrom being at a predetermined average value; and deflection amplifier means connected to the deflection signal means, the power supply and the display means, and operative in a linear mode for initially applying the linear mode output power to the deflection display means and responsive to a rate of change of the deflection signals above a predetermined rate for switching to a slew mode of operation to apply the slew mode output power to the deflection display means, said linear and slew modes being independent of each other for reduction slew time without increasing power consumption.
Claim 3
Dependent Claim
53 words
An electromagnetic deflection display system as described by claim 1, wherein the power supply means includes: means for providing linear mode output power at predetermined levels in one sense and in an opposite sense; and means for providing slew mode output power at predetermined levels in one sense and in an opposite sense.
Claim 4
Dependent Claim
34 words
An electromagnetic deflection display system as described by claim 1, wherein the power supply means includes: means for providing linear mode output power at predetermined levels in one sense and in an opposite sense.
Claim 5
Dependent Claim
49 words
An electromagnetic deflection display system as described by claim 1, wherein the power supply means includes: means for providing linear mode output power at predetermined levels in one sense and in an opposite sense; and means for providing slew mode output power at a predetermined level in one sense.
Claim 6
Dependent Claim
174 words
An electromagnetic deflection display system as described by claim 1, wherein: the means for providing deflection signals includes means for providing X-axis deflection signals and means for providing Y-axis deflection signals; the deflection display means includes X-axis deflection means and Y-axis deflection means; and the deflection amplifier means includes means having independent linear and slew modes of operation and operative in the linear mode for initially applying the linear mode output power to the X-axis deflection means and responsive to a rate of change of the X-axis deflection signals above the predetermined rate for switching to the slew mode to apply the slew mode output power to the X-axis deflection means, and other means having independent linear and slew modes of operation and operative in the linear mode for initially applying the linear mode output power to the Y-axis deflection means and responsive to a rate of change of the Y-axis deflection signals above the predetermined rate for switching to the slew mode to apply slew mode output power to the Y-axis deflection means.
Claim 7
Dependent Claim
31 words
An electromagnetic deflection display system as described by claim 1, including: means for providing display bright up signals; an means for applying the display bright up signals to the display means.
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) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |