发明名称 |
Digital shade control for color CRT background and cursors |
摘要 |
A color cathode ray tube is provided in a color monitor of a video display terminal. The red, green and blue color video input lines are connected to novel control circuits which permit the selection of several different shades of colors for the background or cursor. The circuits which control the background colors are pulse modulated to provide digital shade control of the background color selected and automatically control the color of the cursor so that a contrasting color is provided.
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申请公布号 |
US4467322(A) |
申请公布日期 |
1984.08.21 |
申请号 |
US19820412688 |
申请日期 |
1982.08.30 |
申请人 |
SPERRY CORPORATION |
发明人 |
BELL, WAYNE D.;MCFARLAND, THOMAS K. |
分类号 |
G06F3/048;G06F3/14;G09G1/00;G09G1/28;G09G5/02;G09G5/08;(IPC1-7):G09G1/28 |
主分类号 |
G06F3/048 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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