发明公开
- 专利标题: METHODS AND APPARATUS FOR DISPLAYING IMAGES SUCH AS TEXT
- 专利标题(中): 显示图像例如具有改进的分辨率的文本的方法
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申请号: EP99953096.7申请日: 1999-10-07
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公开(公告)号: EP1125270A1公开(公告)日: 2001-08-22
- 发明人: HILL, William , DUGGAN, Michael , KEELY, Leroy, B., Jr. , HITCHCOCK, Gregory, C. , WHITTED, J., Turner
- 申请人: MICROSOFT CORPORATION
- 申请人地址: One Microsoft Way Redmond,WA 98052 US
- 专利权人: MICROSOFT CORPORATION
- 当前专利权人: MICROSOFT CORPORATION
- 当前专利权人地址: One Microsoft Way Redmond,WA 98052 US
- 代理机构: Belcher, Simon James
- 优先权: US168012 19981007
- 国际公布: WO0021068 20000413
- 主分类号: G09G5/02
- IPC分类号: G09G5/02 ; G09G5/10
摘要:
Methods and apparatus for utilizing pixel sub-components which form a pixel element of an LCD display, e.g., as separate luminous intensity elements, are described. Each pixel of a color LCD display is comprised of three non-overlapping red, green and blue rectangular pixel sub-elements or sub-components. The invention takes advantage of the ability to control individual RGB pixel sub-elements to effectively increase a screen's resolution in the dimension perpendicular to the dimension in which the screen is striped, e.g., the RGB pixel sub-elements are arranged lengthwise. In order to utilize the effective resolution which can be obtained by treating RGB pixel sub-components separately, scaling (910) or super sampling of digital representations of fonts (806) is performed in one dimension at a rate that is greater than the scaling or sampling performed in the other dimension. In some embodiments where weighting is used in determining RGB pixel values, e.g., during scan conversion (914), the super sampling is a function of the weighting. During a scan conversion operation (914), RGB pixel sub-component values are independently determined from different portions of a scaled image. The scan conversion process (914) may involve use of different weights for each color component. Processing (915) to compensate for color distortions, e.g., color fringing, introduced by treating each pixel sub-component as an independent element is described. For horizontally flowing text applications, screens with vertical as opposed to horizontal striping are preferred.
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