发明名称 |
Information playback apparatus with an unusual waveform circuit |
摘要 |
An unusual waveform detection circuit is a digital-type unusual waveform detection circuit that arbitrarily sets a threshold used for determining an unusual waveform and produces an unusual waveform determination signal by comparing an input signal with the threshold. In producing the unusual waveform determination signal, one of a configuration where a voltage at each of all sampling points is compared with a reference voltage and a configuration where a continuously changing gradient of signal waveform peaks is calculated and is compared with a reference gradient is selectively employed. The unusual waveform detection circuit can easily and accurately detect various unusual waveforms.
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申请公布号 |
US6895348(B2) |
申请公布日期 |
2005.05.17 |
申请号 |
US20030340273 |
申请日期 |
2003.01.10 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KAWABE AKIRA;NAGANO KOICHI |
分类号 |
G11B20/10;G11B20/18;(IPC1-7):G11B5/09 |
主分类号 |
G11B20/10 |
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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