Method and apparatus for converting a gap-infested read-in clock

Details Method and apparatus for converting a gap-infested read-in clock Method and apparatus for converting a gap-infested read-in clock

1990-02-08

1991-05-21

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307262, 328 63, 328 72, 328155, 331 25, H03K 906, H03K 513

Patent

active

050178016

ABSTRACT:
An integrated circuit wherein no disturbances due to spikes occur is provided for converting a gap-infested clock into a gap-free clock. In a phase-locked loop the frequency of a read-in clock is supplied to a phase discriminator via a frequency divider and the frequency of a read-out clock is supplied to the phase discriminator via another frequency divider. A succession of clocks shifted in phase relative to one another is provided by a generator from an auxiliary frequency of a crystal oscillator which feeds an auxiliary successor sequence clock generator which provides a plurality of successor auxiliary clocks. Which of these clocks provides the read-out clock after a division in a frequency divider is defined by a switching frequency output by a frequency divider which is controlled by the phase discriminator.

REFERENCES:
patent: 4066978 (1978-01-01), Cox, Jr.
patent: 4820994 (1989-04-01), Sonntag et al.
patent: 4970473 (1990-11-01), Lietar

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