发明名称 |
Low-voltage joystick port interface |
摘要 |
The joystick port interface includes an integrated circuit receiving an analog joystick position measurement signal and outputting a digital pulse signal to a processor which signifies a joystick coordinate value. The integrated circuit includes a pulse generator and a bidirectional buffer circuit. The bidirectional buffer circuit receives the analog joystick position measurement signal and selectively discharges an RC network capacitor which provides this analog measurement. This implementation provides a joystick port which uses low-voltage CMOS VLSI structures which can interface a conventional high-voltage joystick with the processor. |
申请公布号 |
US6297751(B1) |
申请公布日期 |
2001.10.02 |
申请号 |
US19980113503 |
申请日期 |
1998.07.10 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
FADAVI-ARDEKANI JALIL;LIVINGSTON RAYMOND S.;NIESCIER RICHARD J.;POTTS DAVID L. |
分类号 |
G06F3/033;G06F3/038;(IPC1-7):H03L5/00 |
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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