Phase compensating apparatus and delay controlling circuit

Details Phase compensating apparatus and delay controlling circuit Phase compensating apparatus and delay controlling circuit

1996-05-28

1999-12-07

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327159, 327292, 327276, 327261, H03L 700

Patent

active

059990279

ABSTRACT:
A delay/digital converting circuit in a phase compensating apparatus detects a time period after a measurement start signal that is an internal clock signal is input, until a measurement end signal that is an output signal of a digital/delay converting circuit is input, and outputs the resultant data as digital data to a digital/delay converting circuit. The delay/digital converting circuit outputs the difference between the cycle of an external clock signal and an amount of delay time of a clock distributing circuit as the digital data. The digital/delay converting circuit delays the external clock signal according to the digital data. An internal clock signal which is the output signal of the digital/delay converting circuit that has been delayed by the clock distributing circuit is a signal that has a delay for one cycle of the external clock signal. Thus, the phase of the external clock signal accords with the phase of the internal clock signal.

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