发明申请
- 专利标题： Noise removal circuit and comparator circuit including same
- 专利标题（中）： 除噪电路和比较电路包括相同
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申请号： US12213893申请日： 2008-06-26
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公开(公告)号： US20090002033A1公开(公告)日： 2009-01-01
- 发明人: Shinji Nakatani , Nobukazu Oba , Norikazu Ohta , Hideki Hosokawa
- 申请人： Shinji Nakatani , Nobukazu Oba , Norikazu Ohta , Hideki Hosokawa
- 申请人地址： JP Kariya-city
- 专利权人： DENSO CORPORATION
- 当前专利权人： DENSO CORPORATION
- 当前专利权人地址： JP Kariya-city
- 优先权： JP2007-171710 20070629
- 主分类号： H03K5/22
- IPC分类号： H03K5/22
摘要：
The present invention reliably removes a signal change associated with a noise component from a comparison signal of a comparator. A comparator circuit includes a comparator and a timer circuit. After a reversal of the comparison signal, if the level of the comparator is sustained at least from a first time to a second time, an output signal is reversed and output. The timer circuit includes a memory unit that is shifted to a memory state in which the reversal of the comparison signal is stored at the first time if the reversal is verified. If the comparison signal is reversed during the interval between the first time and second time, the memory state is cleared.