Composite clock signal

Details Composite clock signal Composite clock signal

1994-04-21

1998-03-03

Olms, Douglas W.

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

375359, 375376, 370513, 370522, 370503, H04J 306

Patent

active

057243603

ABSTRACT:
A composite reference signal distributes with one single signal both a clock signal and a synchronizing signal. This synchronizing signal is detected in a subsequent bit clocking generator for a high bit clocking frequency. Jitter that may exist on the edges of the clock signal will not influence the definition of the locally obtained synchronizing signal, and each data bit frame defined by the synchronizing signal will always include the exact number of data bits at the bit clocking frequency. The bit clocking generator includes a phase-locked loop, a dividing circuit, a shift register, and a logic gate for generating from the composite signal the bit clocking signal with its frame reference. In addition to the bit clocking frequency, a synchronizing pulse is obtained from the bit clocking generator that has high precision in relation to both the high frequency system clock and an external time domain transferred through the composite reference signal.

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