Clock signal detection circuit

Details Clock signal detection circuit Clock signal detection circuit

1998-06-03

2000-05-16

Butler, Dennis M.

Electrical computers and digital processing systems: support

Clock, pulse, or timing signal generation or analysis

713503, 713600, G06F 104

Patent

active

060651296

ABSTRACT:
A clock signal detection circuit includes a diode to which a clock signal is applied as an input. If a voltage VD IN on the anode side of the diode is greater than a voltage VD OUT on the cathode side, the clock signal is fed into a transmission line and arrives at a reflecting load upon elapse of a prescribed delay time. When the voltage VD IN on the anode side of the diode becomes smaller than the voltage VD OUT on the cathode side, the clock signal is reflected by the reflecting load and returns to the cathode of the diode through the transmission line. This introduction and reflection of the clock signal is repeated at the clock signal period so that the amplitude on the output side of the diode is enlarged, thereby making it possible to obtain, from an averaging circuit, a clock detection voltage substantially equal to the amplitude value of the clock signal.

REFERENCES:
patent: 4507544 (1985-03-01), Jones
patent: 5394490 (1995-02-01), Kato et al.
patent: 5442475 (1995-08-01), Bausman et al.
patent: 5563538 (1996-10-01), Mukoujima
patent: 5598389 (1997-01-01), Nakano et al.

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