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AssigneeKabushiki Kaisha Toshiba
InventorsOsamu Watanabe, Rui Ito, Shigehito Saigusa, Tetsuro Itakura
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A time constant automatic adjusting circuit comprises: a filter circuit varying a phase of an clock signal to be input so as to output the clock signal; a phase comparison circuit comparing a phase of an output signal of the filter circuit with the phase of the clock signal, and outputting a predetermined voltage when the phase of the output signal and the phase of the clock signal are the same; at least three comparators comparing the output voltage with a plurality of different voltages; an up-down counter counting a number of output bits of either one of the at least three different voltages in accordance with an output result of the comparators; and a control circuit varying the time constant of the filter circuit in accordance with the number of output bits counted by the up-down counter.
A time constant automatic adjusting circuit for adjusting a time constant of a filter circuit to which clock signal is input and which outputs filtered signal, the time constant is variable, comprising:
A time constant automatic adjusting circuit for adjusting a time constant of a filter circuit to which clock signal is input and which outputs filtered signal, the time constant is variable, comprising:
Dependencies are inferred from the claim text.