US Patent No: 4,910,685
Number of patents in Portfolio can not be more than 2000
Video circuit including a digital-to-analog converter in the monitor which converts the digital data to analog currents before conversion to analog voltages
Stats
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Mar 20, 1990
Issued date -
Sep 9, 1983
filing date -
06/530,607
serial no -
Expired
status
Importance
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Abstract
A system for processing video data to be displayed comprises a controller and a monitor. The controller includes a memory for storing the digital data to be displayed and apparatus for sequentially reading data from the memory. The data from the controller is conducted in digital form to the separately housed monitor separated from the controller. In the monitor, the digital data is converted into analog form and displayed. In the converting process, the digital data is first converted to an analog current and then the analog current is converted to a voltage. An additional voltage-to-voltage conversion may occur to isolate the capacitance of the display device. This system is particularly suited for high resolution systems (greater than 1000.times.1000 pixels) in which a new pixel is refreshed at least every 10 nanoseconds.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,439,762 Graphics memory expansion system | 31 | 1981 | |
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| 4,317,114 Composite display device for combining image data and method | 101 | 1980 | |
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| 4,470,042 System for displaying graphic and alphanumeric data | 26 | 1981 | |
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| 4,259,725 Cursor generator for use in computerized tomography and other image display systems | 74 | 1979 | |
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| 4,490,797 Method and apparatus for controlling the display of a computer generated raster graphic system | 38 | 1982 | |
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| 4,371,872 Fractional clock edge smoother for a real-time simulation of a polygon face object system | 27 | 1979 | |
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| 4,509,043 Method and apparatus for displaying images | 112 | 1982 | |
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| 4,471,348 Method and apparatus for simultaneously displaying data indicative of activity levels at multiple digital test points in pseudo real time and historical digital format, and display produced thereby | 69 | 1982 | |
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| 4,303,912 Digitally controlled composite color video display system | 18 | 1980 | |