Nel Frequency Controls, Inc.

Sync-n-scale, LLC

Jorge Gomez

Roman Boroditsky

A synchronized clock system, for use with an electronic system having several system nodes requiring a synchronized clock signal. The clock system may be formed in either discrete form or in integrated form, or in any combination, and includes a first synch bus and a second synch bus, isolated from the first synch bus, and at least one pair and preferably several pairs of SXO modules connected to the busses in alternating fashion. Each of the system nodes is connected at a different one of any number of arbitrarily selected connection points anywhere along the first bus. The points along the busses at which the SXO modules are connected are spaced roughly equidistantly apart. The system nodes are connected to the bus by means of signal conditioning circuits, which may include correction circuits, an amplifier, a frequency multiplier, a logic translator and a fan buffer.

System employing synchronized crystal oscillator-based clock, to be used in either discrete or integrated applications

A crystal oscillator-based module, which includes a crystal resonator receiving a conditioned signal from a first bus and passing a resonator signal to a sustaining stage amplifier. A synchronization range expansion circuit is connected between a gain control network and the resonator. A tri-state buffer has a main input connected to receive the resonator signal through a buffer. The output of the tri-state buffer is connected to a second bus, through a matching network if necessary. A synchronous clock system can be formed by connecting these modules alternately to the two busses. The tri-state buffer also has a control input, which may be connected to a delay circuit between Vcc and ground, so as to allow hot swapping and for other benefits.

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Surfside, FL, United States of America

Jorge Gomez