发明名称 |
Constant percent break type dial pulse corrector |
摘要 |
The first monostable multivibrator of a series connected pair of monostable multivibrators is responsive to each break interval of input dial pulses for establishing a fixed time delay after which the second multivibrator initiates a corrected break interval and starts a first timing capacitor thereof charging at a rate set by a fixed time constant. Each input break interval also causes a capacitor of a second timing circuit to start discharging at a rate set by another fixed time constant, the time that the second capacitor starts discharging being a function of the pulse repetition frequency of input dial pulses. When the charge voltages on the two capacitors are the same values, the output of a comparator resets the second multivibrator to terminate an output break interval so as to cause corrected dial pulses in the output thereof to have a constant percent break.
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申请公布号 |
US4207436(A) |
申请公布日期 |
1980.06.10 |
申请号 |
US19780928117 |
申请日期 |
1978.07.26 |
申请人 |
GTE AUTOMATIC ELECTRIC LABORATORIES INC |
发明人 |
TOSUNTIKOOL, NAM;YAPP, ROBERT |
分类号 |
H04Q1/36;(IPC1-7):H04Q1/36 |
主分类号 |
H04Q1/36 |
代理机构 |
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地址 |
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