发明名称 |
Compensation of stylus signals in digitizing tablet |
摘要 |
The invention concerns digitizing tablets in portable computers, wherein position of a stylus, located on the tablet, is computed. The invention corrects for various errors which creep into the computation, in order to produce a more accurate stylus position. The digitizing tablet has multiple sensors used to determine the stylus' position with respect to the digitizing tablet. Error signals are generated by measuring the sensors outputs when the stylus is not inducing a signal into the digitizing tablet. In one embodiment, these error signals are used to modify certain parameters used in calculating the stylus position.
|
申请公布号 |
US6005200(A) |
申请公布日期 |
1999.12.21 |
申请号 |
US19940286720 |
申请日期 |
1994.08.05 |
申请人 |
HYUNDAI ELECTRONICS AMERICA;NCR CORPORATION |
发明人 |
STANCHAK, CARL M.;KECK, JOHN S.;BRUNO, KEVIN J.;PETTY, WILLIAM K. |
分类号 |
G06F3/041;G06F3/033;G06F3/044;G06F3/045;G06F3/048;(IPC1-7):G08C21/00 |
主分类号 |
G06F3/041 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|