发明名称 |
Digitizer device with anti-noise and status display |
摘要 |
A digitizer device with anti-noise and status display having a hardware circuit controlled by a software program to eliminate outside noises. The system includes a cursor control mouse or stylus which emits an oscillating signal at several hundred KHz to induce a X-Y grid, an anti-noise circuit which eliminates outside noises from the induced signal, an ADC converter which converts the induced signal into a digital signal, a microcontroller unit which calculates the induced signal into corresponding X-Y axis coordinate value, and a display which shows the current status of the digitizer.
|
申请公布号 |
US5365253(A) |
申请公布日期 |
1994.11.15 |
申请号 |
US19920974881 |
申请日期 |
1992.11.12 |
申请人 |
WINTIME TECHNOLOGY INC. |
发明人 |
CHENG, ROBERT;CHEN, ROBIN;SU, MICHAEL;HORNG, CHUEN-JING |
分类号 |
G06F3/033;G06F3/046;(IPC1-7):G09G3/02 |
主分类号 |
G06F3/033 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|