Apparatus and method to change a processor clock frequency

Details Apparatus and method to change a processor clock frequency Apparatus and method to change a processor clock frequency

1995-12-21

1998-09-29

Heckler, Thomas M.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Converting, per se, of an ac input to corresponding dc at an...

327113, 331177R, G06F 108

Patent

active

058156941

ABSTRACT:
An apparatus and method for providing a variable frequency clock source is described wherein the frequency may be changed while maintaining the phase of the clock signal. A frequency conversation circuit, such as a phase locked loop (PLL), is employed to change the frequency of the clock and is controlled by a control unit which maintains the phase of the output clock signal while undergoing a frequency change operation.

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patent: 5142247 (1992-08-01), Lada, Jr. et al.
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patent: 5278814 (1994-01-01), Deguchi et al.
patent: 5355502 (1994-10-01), Schowe et al.
patent: 5420545 (1995-05-01), Davis et al.

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