Patent US3751706A successfully refreshed from Google Patents.
US3751706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for conserving energy during line retrace of a raster type display
Assignee: Bendix Corp
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Filing: 1971-02-03
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Granted: 1973-08-07
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Expires: 1991-02-03
Abstract
Abstract A cathode ray tube (magnetic deflection) display system provides pictorial (raster) and symbol (stroke) displays and includes an energy conservation circuit which uses the energy stored in the horizontal deflection coil of the cathode ray tube to achieve retrace of the sweep voltage used in providing the pictorial display.
Inventors
- 👤 A Owens
- 👤 D Weinstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:18
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/24
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
377 words
A display system comprising: signal providing means including means for providing periodically occurring sweep and retrace signals; display means responsive to signals from the signal providing means for providing a display; first connecting means including first switching means for connecting the signal providing means to the display means; second connecting means including control means for connecting the signal providing means to the first switching means and affected by the presence of the retrace signal for controlling the first switching means to block signals from the signal providing means, and affected by the absence of the retrace signal for controlling said switching means to pass signals from the signal providing means to the display means; signal storage means connected intermediate the first switching means and the display means for storing signals passed by the first switching means; second switching means connected to the signal storage means, the second connecting means and the display means and affected by the presence of the retrace signal for connecting the storage means to the display means whereupon the stored signals are applied to said display means, and affected by the absence of said retrace signal for disconnecting the storage means from the display means; the first connecting means further including means for providing a constant level signal, means for providing a display mode signal, means connected to the contant level signal means and the display mode signal means and respOnsive to the signals therefrom for providing a controlling signal, third switching means connected to the signal providing means, amplifier means for connecting the third switch means to the first switching means, and the third switching means connected to the controlling signal means and controlled by the signal therefrom for passing the sweep signal to the amplifier means; and the second connecting means further including gating means connected to the means for providing a controlling signal and to the signal providing means for providing a first signal when the controlling signal and the retrace signal are present and for providing a second signal when the retrace signal is absent, and the controlling means being responsive to the first signal for controlling the first switching means to block signals, and being responsive to the second signal for controlling said switching means to pass signals.
Claim 2
Dependent Claim
377 words
A display system comprising: signal providing means including means for providing periodically occurring sweep and retrace signals; display means responsive to signals from the signal providing means for providing a display; first connecting means including first switching means for connecting the signal providing means to the display means; second connecting means including control means for connecting the signal providing means to the first switching means and affected by the presence of the retrace signal for controlling the first switching means to block signals from the signal providing means, and affected by the absence of the retrace signal for controlling said switching means to pass signals from the signal providing means to the display means; signal storage means connected intermediate the first switching means and the display means for storing signals passed by the first switching means; second switching means connected to the signal storage means, the second connecting means and the display means and affected by the presence of the retrace signal for connecting the storage means to the display means whereupon the stored signals are applied to said display means, and affected by the absence of said retrace signal for disconnecting the storage means from the display means; the first connecting means further including means for providing a constant level signal, means for providing a display mode signal, means connected to the contant level signal means and the display mode signal means and respOnsive to the signals therefrom for providing a controlling signal, third switching means connected to the signal providing means, amplifier means for connecting the third switch means to the first switching means, and the third switching means connected to the controlling signal means and controlled by the signal therefrom for passing the sweep signal to the amplifier means; and the second connecting means further including gating means connected to the means for providing a controlling signal and to the signal providing means for providing a first signal when the controlling signal and the retrace signal are present and for providing a second signal when the retrace signal is absent, and the controlling means being responsive to the first signal for controlling the first switching means to block signals, and being responsive to the second signal for controlling said switching means to pass signals.
Claim 3
Dependent Claim
54 words
A display system as described by claim 1, wherein: the second switching means is connected to the gating means in the second connecting means, and is responsive to the first signal for connecting the storage means to the display means and to the second signal for disconnecting the storage means from the display means.
Claim 4
Dependent Claim
98 words
A display system as described by claim 2, wherein the control means includes time delay means for controlling the first switching means and: the second switching means is responsive to the first signal for connecting the storage means to the display means a predetermined interval before the first switching means is controlled by the time delay means to block signals; and the first switching means is controlled by the time delay means to pass signals a predetermined interval after the second switching means is responsive to the second signal for disconnecting the storage means from the display means.
Claim 5
Dependent Claim
34 words
A display system as described by claim 1, wherein: the sweep signal is a horizontal sweep signal; the retrace signal is a horizontal retrace signal; and the deflection coil is a horizontal deflection coil.
Claim 6
Dependent Claim
73 words
A display system as described by claim 4, including: the display means having a vertical deflection coil; the signal providing means providing a vertical sweep signal; fourth switching means connected to the signal providing means and to the vertical deflection coil; and the fourth switching means connected to the controlling signal means and controlled by the signal therefrom for passing the vertical sweep signal to the vertical deflection coil in the display means.
Claim 7
Dependent Claim
22 words
A display system as described by claim 5, including: means for providing a vertical deflection signal connected to the fourth switching means.
Claim 8
Dependent Claim
22 words
A display system as described by claim 4, including: means for providing a horizontal deflection signal connected to the third switching means.
Claim 9
Dependent Claim
42 words
A display system as described by claim 5, including: amplifier means connecting the fourth switching means to the vertical deflection coil; and grounded resistor means connected intermediate the fourth switching means and the amplifier means and connected to the vertical deflection coil.
Claim 10
Dependent Claim
32 words
A display system as described by claim 1, including: the display system being a video system; the signal providing means providing a video signal; and means for providing a display bright-up signal.
Claim 11
Dependent Claim
68 words
A display system as described by claim 9, including: the video system having a control grid electrode; fifth switching means connected to the signal providing means, to the bright-up signal means and to the control grid electrode; and the fifth switching means connected to the controlling signal means and controlled by the signal therefrom for passing the video signal and the bright-up signal to the control grid electrode.
Claim 12
Dependent Claim
372 words
A display system comprising: signal providing means including means for providing periodically occurring sweep and retrace signals; display meanS responsive to signals from the signal providing means for providing a display; first connecting means including first switching means for connecting the signal providing means to the display means; second connecting means including control means for connecting the signal providing means to the first switching means and affected by the presence of the retrace signal for controlling the first switching means to block signals from the signal providing means, and affected by the absence of the retrace signal for controlling said switching means to pass signals from the signal providing means to the display means; signal storage means connected intermediate the first switching means and the display means for storing signals passed by the first switching means; second switching means connected to the signal storage means, the second connecting means and the display means and affected by the presence of the retrace signal for connecting the storage means to the display means whereupon the stored signals are applied to said display means and affected by the absence of said retrace signal for disconnecting the storage means from the display means; the first connecting means further including means for providing a constant level signal, means for providing a display mode signal, means connected to the constant level signal means and the display mode signal means and responsive to the signals therefrom for providing a controlling signal, third switching means connected to the signal providing means, amplifier means for connecting the third switching means to the first switching means, and the third switching means connected to the controlling signal means and controlled by the signal therefrom for passing the sweep signal to the amplifier means; and the display means including magnetic deflection means having a deflection coil connected to the signal storage means and connected to the third switching means, a grounded resistor connected to the deflection coil and to the second switching means, and the second switching means being affected by the presence of the retrace signal to connect the storage means across the coil and being affected by the absence of the retrace signal for disconnecting the storage means from across the coil.
Claim 13
Dependent Claim
372 words
A display system comprising: signal providing means including means for providing periodically occurring sweep and retrace signals; display meanS responsive to signals from the signal providing means for providing a display; first connecting means including first switching means for connecting the signal providing means to the display means; second connecting means including control means for connecting the signal providing means to the first switching means and affected by the presence of the retrace signal for controlling the first switching means to block signals from the signal providing means, and affected by the absence of the retrace signal for controlling said switching means to pass signals from the signal providing means to the display means; signal storage means connected intermediate the first switching means and the display means for storing signals passed by the first switching means; second switching means connected to the signal storage means, the second connecting means and the display means and affected by the presence of the retrace signal for connecting the storage means to the display means whereupon the stored signals are applied to said display means and affected by the absence of said retrace signal for disconnecting the storage means from the display means; the first connecting means further including means for providing a constant level signal, means for providing a display mode signal, means connected to the constant level signal means and the display mode signal means and responsive to the signals therefrom for providing a controlling signal, third switching means connected to the signal providing means, amplifier means for connecting the third switching means to the first switching means, and the third switching means connected to the controlling signal means and controlled by the signal therefrom for passing the sweep signal to the amplifier means; and the display means including magnetic deflection means having a deflection coil connected to the signal storage means and connected to the third switching means, a grounded resistor connected to the deflection coil and to the second switching means, and the second switching means being affected by the presence of the retrace signal to connect the storage means across the coil and being affected by the absence of the retrace signal for disconnecting the storage means from across the coil.
References Cited (Backward Citations)
US3541385A
Cited
US3602768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |