Patent ID: 6847264
Filing Date: 2005-01-25
Classification: H03K

Abstract:
1. A circuit to produce wander or wander sequences having frequencies below 10 Hz comprising; a frequency divider circuit that receives impulse signals of relatively high frequency as incoming inputs and issues impulse signals of divided frequency as its output, from which the respective wander or wander sequence is formed, the frequency division circuit having two dividers, each of which encompasses a counting arrangement, both of which receive as incoming inputs the impulse signals mentioned having the relatively high frequency, the count cycle of one counting arrangement is changed with respect to the count cycle of the other counting arrangement within the period of the respective wander or wander sequence to be produced according to a desired shape of the wander or wander sequence; and a phase comparator circuit is connected to outputs of both counting arrangements, from the output of which the respective wander or the respective wander sequence can be taken.