Pulse or digital communications – Synchronizers – Frequency or phase control using synchronizing signal
Reexamination Certificate
2005-06-07
2005-06-07
Tse, Young T. (Department: 2637)
Pulse or digital communications
Synchronizers
Frequency or phase control using synchronizing signal
C370S517000, C327S161000
Reexamination Certificate
active
06904112
ABSTRACT:
A method for modulating a basic clock signal for digital circuits, in which distances between adjacent switching edges are altered, the basic clock signal being conducted via a changing number of delay units for altering the distances between the adjacent switching edges, the method comprising the step of calibrating delay times of the delay units (D1-Dn), wherein the delay units (D1-Dn) each have a plurality of delay elements (10) which are controlled to impart zero delay or a non-zero value of delay to a clock signal individually or in groups of the display elements; wherein the respective distance between two adjacent switching edges is derived from numbers of a random number generator; and wherein the distance between two successive switching edges is derived as a function of the random number and a modulation factor.
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Klumb Walter
Sattler Frank
Farber Martin A
Fujitsu Microelectronics Europe GmbH
Mannesmann VDO AG
Tse Young T.
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