发明名称 |
PROGRAMMABLE DIGITAL TONE DETECTOR |
摘要 |
The programmable tone detector has a critical detector(22) that generates output signals at the output terminal to appear that one of a number of tones at least exists when the absolute value of a difference value between a pair of counters among a number of counters is larger than the specified critical value, and can detect at least one of the number of tones of any input signal.
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申请公布号 |
KR830001337(A) |
申请公布日期 |
1983.07.09 |
申请号 |
KR19790002688 |
申请日期 |
1979.08.07 |
申请人 |
MOTOROLA INC. |
发明人 |
BACKOF JR. CHARLES;ROBINS DAVID S. |
分类号 |
H03D3/02;(IPC1-7):H03D3/02 |
主分类号 |
H03D3/02 |
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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