Clock down sensor

Details Clock down sensor Clock down sensor

2005-07-19

2005-07-19

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By presence or absence pulse detection

C327S509000

Reexamination Certificate

active

06919741

ABSTRACT:
A clock down sensor mainly comprises a converter and a low-pass filter. The converter is used to convert an input signal from a PECL (Positive Emitter Coupling Logic) signal to a TTL (Transistor Transistor Logic) signal, the low pass filter is used to obtain a DC (Direct Current) level of the TTL signal. Thereby, the sensor can judge whether the clock signal is terminated according to the potential of the output signal in order to emit a warning so that a breakdown elimination inquiry can be done or automatic breakdown elimination can be processed earlier.

REFERENCES:
patent: 3728721 (1973-04-01), Lee et al.
patent: 5757288 (1998-05-01), Dixon et al.
patent: 6124798 (2000-09-01), Tai et al.
patent: 6222668 (2001-04-01), Dutrisac et al.
patent: 6570148 (2003-05-01), Matsumoto et al.
patent: 0620647 (1994-04-01), None

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