US3603962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color display for computer terminal
Assignee: RCA Corp
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Filing: 1970-03-18
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Granted: 1971-09-07
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Expires: 1990-03-18
Abstract
Abstract A color display system is disclosed which responds to computersupplied digital signals representing graphic and alphanumeric material. The digital signals include position information bits and color information bits. The position information bits are used to control the beam deflection means of an electrical storage tube. The color information bits are translated in a digital-to-analog converter to a signal having an amplitude determined by the color information bits. This signal is applied to the video signal input terminal of the electrical storage tube, whereby the graphic material is stored as a pattern of stored charge amplitudes. The graphic material is displayed on a color kinescope having beam deflection means synchronized with the beam deflection means of the electrical storage tube. The amplitude-modulated video output signal from the electrical storage tube is applied to a threshold detector means to generate red, green and blue control signals for application to corresponding terminals of the color kinescope.
Inventors
- 👤 Bernard Joseph Lechner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:12
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/28; G09G1/285
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
87 words
In combination, an electrical storage tube including deflection means and a video signal output terminal, means to store graphic material in said storage tube with amplitude variations representing different colors, a color display device including deflection means synchronizable with the deflection means of said storage tube, and including color control signal input terminals, and means to translate the amplitude modulated signal from the video signal output terminal of said storage tube to signals for application to said color control signal input terminals of said color display device.
Claim 2
Dependent Claim
87 words
In combination, an electrical storage tube including deflection means and a video signal output terminal, means to store graphic material in said storage tube with amplitude variations representing different colors, a color display device including deflection means synchronizable with the deflection means of said storage tube, and including color control signal input terminals, and means to translate the amplitude modulated signal from the video signal output terminal of said storage tube to signals for application to said color control signal input terminals of said color display device.
Claim 3
Dependent Claim
15 words
The combination defined in claim 1 wherein said color display device is a color kinescope.
Claim 4
Dependent Claim
126 words
The combination of, a source of digital signals which represent graphic material, an electrical storage tube having beam deflection means and a video signal output terminal, means responsive to said digital signals to store said graphic material in said storage tube as a pattern of stored charges of varying color-representing amplitudes, a color kinescope having beam deflection means and having red, green and blue signal input terminals, means to synchronize the beam deflection means of said storage tube and said color kinescope, and threshold detector means responsive to the video output signal of said storage tube to generate and supply signals to the red, green and blue terminals of said kinescope, whereby said graphic material is reproduced in color on the face of said color kinescope.
Claim 5
Dependent Claim
126 words
The combination of, a source of digital signals which represent graphic material, an electrical storage tube having beam deflection means and a video signal output terminal, means responsive to said digital signals to store said graphic material in said storage tube as a pattern of stored charges of varying color-representing amplitudes, a color kinescope having beam deflection means and having red, green and blue signal input terminals, means to synchronize the beam deflection means of said storage tube and said color kinescope, and threshold detector means responsive to the video output signal of said storage tube to generate and supply signals to the red, green and blue terminals of said kinescope, whereby said graphic material is reproduced in color on the face of said color kinescope.
Claim 6
Dependent Claim
174 words
The combination of, a source of digital signals, including position information bits and color information bits, which represent graphic material, an electrical storage tube having beam deflection means, a video signal input terminal and a video signal output terminal, means responsive to said position information bits to control said beam deflection means, digital-to-analog converter means responsive to said color information bits to generate and supply a signal having an amplitude determined by said color information bits to said video signal input terminal, whereby said graphic material is stored in said storage tube as a pattern of stored charge amplitudes, a color kinescope having beam deflection means and having red, green and blue signal input terminals, means to synchronize the beam deflection means of said storage tube and said color kinescope, and threshold detector means responsive to the video output signal of said storage tube to generate and supply signals to the red, green and blue terminals of said kinescope, whereby said graphic material is reproduced in color on the face of said color kinescope.
Claim 7
Dependent Claim
174 words
The combination of, a source of digital signals, including position information bits and color information bits, which represent graphic material, an electrical storage tube having beam deflection means, a video signal input terminal and a video signal output terminal, means responsive to said position information bits to control said beam deflection means, digital-to-analog converter means responsive to said color information bits to generate and supply a signal having an amplitude determined by said color information bits to said video signal input terminal, whereby said graphic material is stored in said storage tube as a pattern of stored charge amplitudes, a color kinescope having beam deflection means and having red, green and blue signal input terminals, means to synchronize the beam deflection means of said storage tube and said color kinescope, and threshold detector means responsive to the video output signal of said storage tube to generate and supply signals to the red, green and blue terminals of said kinescope, whereby said graphic material is reproduced in color on the face of said color kinescope.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |