发明名称 |
Character display in data processing system. |
摘要 |
<p>A method and apparatus for increasing efficiency in displaying characters on a display within the data processing system. A plurality of processes for displaying characters on the display in a data processing system are provided. Each of the processes requires a different amount of processor resources to display characters on the display. One of the processes is selected such that the selected process provides a more efficient display of characters on the display than other processes. Characters may be displayed by caching font data in system memory of the data processing system. Glyph bitmaps for a particular character may be moved from the cache to a graphics adapter utilizing a permanent move instruction available in the CPU. Characters are moved to the graphics adapter on a fixed scanline basis, either encompassing the entire width of the character or the entire string of characters on a line. <IMAGE></p> |
申请公布号 |
EP0663659(A2) |
申请公布日期 |
1995.07.19 |
申请号 |
EP19940308663 |
申请日期 |
1994.11.23 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
MORSE, GARY JAMES;THOMPSON, STEPHEN PATRICK |
分类号 |
G06F17/21;G06T1/20;G06T11/20;G09G5/24;G09G5/393;(IPC1-7):G09G1/16 |
主分类号 |
G06F17/21 |
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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