发明名称 |
Display-integrated type tablet device |
摘要 |
Displacement between an actual designation position designated by a detection pen and a detection coordinates is corrected. A correction calculation section includes a plurality of processing mode determination modules, a propagation delay correction module, an inward displacement correction module, a waveform distortion correction module, and a periodical fluctuation correction module. The processing mode determination module determines a correction module according to a detection coordinate value input. Each of the correction modules includes a correction formula or a lookup table inherent to each area. According to the correction formula or the lookup table, input detection coordinate value is corrected to thereby correct the displacement between the actual designation position and the detection coordinate value.
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申请公布号 |
US5534886(A) |
申请公布日期 |
1996.07.09 |
申请号 |
US19950446341 |
申请日期 |
1995.05.22 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
NOMURA, TOSHIO;TAGAWA, TAKAO;KAKO, NORITOSHI |
分类号 |
G06F3/044;G06F3/033;G06F3/041;(IPC1-7):G09G3/36 |
主分类号 |
G06F3/044 |
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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