发明名称 |
Method and apparatus for utilizing blanking on both zero setup and pedestal setup display monitors with a conventional computer system |
摘要 |
In a computer system having a frame buffer, apparatus for providing an overlay for the frame buffer, and a digital-to-analog converter for furnishing analog signals from the frame buffer to a pedestal setup display monitor, the digital-to-analog converter including apparatus for furnishing a blank level substantially below the lowest level of the analog signal desired to be visible on the monitor during retrace periods when used with a pedestal setup display monitor, the improvement including apparatus for allowing the system to utilize zero setup display monitors including apparatus for disabling the apparatus for furnishing a blank level when the computer system is used with a zero setup display monitor, and apparatus for causing the apparatus for providing an overlay for the frame buffer to furnish signals indicating a black level during retrace periods when the computer system is used with a zero setup display monitor.
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申请公布号 |
US5334998(A) |
申请公布日期 |
1994.08.02 |
申请号 |
US19910726303 |
申请日期 |
1991.07.05 |
申请人 |
SUN MICROSYSTEMS, INC. |
发明人 |
PRIEM, CURTIS;BOYNTON, CHARLES |
分类号 |
G09G1/28;G09G5/395;H04N5/16;(IPC1-7):G09G3/00 |
主分类号 |
G09G1/28 |
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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