发明名称 |
Waveform shaping apparatus |
摘要 |
An input voltage Va and a threshold voltage Vc are compared in a comparator 21 to shaping the waveform of a sensor signal. The period of the output signal of comparator 21 is measured by a period measuring circuit 4. A stepped waveform voltage generating circuit 5 generates a stepped waveform voltage based on the measured period. The stepped waveform voltage is converted into corresponding current in a V-I conversion circuit 6. The current of V-I conversion circuit 6 is supplied to a resistance 23d or 23e via an analog switch 22a or 22b which turns on or off in response to the operation of comparator 21, thereby applying a stepped offset voltage to input voltage Va threshold voltage Vc to perform the hysteresis operation.
|
申请公布号 |
US5742198(A) |
申请公布日期 |
1998.04.21 |
申请号 |
US19960687915 |
申请日期 |
1996.07.29 |
申请人 |
NIPPONDENSO CO., LTD. |
发明人 |
HORIE, MASAKIYO;HARADA, TAKUYA |
分类号 |
G01P3/489;G01D5/244;G01R19/165;H03K5/02;H03K5/08;H03K5/1252;(IPC1-7):H03B1/00 |
主分类号 |
G01P3/489 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|