发明名称 |
High voltage stylus for portable computer |
摘要 |
The invention concerns a stylus for producing a high-voltage, sinusoidal signal for an electrostatic digitizing pad. The high voltage is obtained by applying a sine wave to one lead of the primary of a transformer, and applying the inverse of the sine wave to the other lead of the primary. The secondary of the transformer produces the high voltage, which is developed into a signal which is applied to the digitizing pad.
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申请公布号 |
US5828011(A) |
申请公布日期 |
1998.10.27 |
申请号 |
US19940191908 |
申请日期 |
1994.02.04 |
申请人 |
AT&T GLOBAL INFORMATION SOLUTIONS COMPANY;HYUNDAI ELECTRONICS AMERICA;SYMBIOS LOGIC INC. |
发明人 |
PARTOW, TONY S.;STANCHAK, CARL M. |
分类号 |
G06F3/033;G06F3/044;(IPC1-7):G08C21/00 |
主分类号 |
G06F3/033 |
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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