发明名称 |
Non-uniform weighting circuitry |
摘要 |
A non-uniform weighting circuitry which is effective for enhancing speed and accuracy in the operations of encoders and decoders comprises in a cascade connection a constant current switch, a variable attenuator, a polarity changing circuit and a uniform weighting circuit. An impedance converting means is provided to make at least one of input and output terminals of the variable attenuator to be of low impedance, whereby spike-like noises generated by a switching element constituting a part of the variable attenuator is reduced.
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申请公布号 |
US4250492(A) |
申请公布日期 |
1981.02.10 |
申请号 |
US19770840178 |
申请日期 |
1977.10.07 |
申请人 |
HITACHI LTD |
发明人 |
TSUKAMOTO, NOBUO;YAMAKIDO, KAZUO |
分类号 |
H03M1/66;H03M1/00;(IPC1-7):H03K13/02 |
主分类号 |
H03M1/66 |
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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