Rectangular wave pulse generators
First Claim
1. Signal processing apparatus comprising:
- an electronic device having a signal input, a signal output and a clock input;
a circuit having an output at which it provides a first train of voltage pulses;
means for converting said first train of voltage pulses into a second train of voltage pulses each having a trailing edge and a leading edge, at least one of said edges being of generally ramp-like form;
a comparator having a first input to which said second train of voltage pulses is applied, a second input to which a reference d.c. voltage level is applied and an output at which is developed a periodic rectangular wave signal having a duty cycle which is a function of the reference d.c. voltage level, the periodic rectangular wave signal being input to the clock input of said electronic device such that said electronic device is clocked by the periodic rectangular wave signal in a time relationship to said first train of voltage pulses that is adjustable in dependence upon said reference d.c. voltage level; and
means for generating the reference d.c. voltage level from the periodic rectangular wave signal.
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Abstract
The present disclosure of the invention is directed to rectangular wave pulse generators. The rectangular wave pulse generators comprise a circuit for providing a train of voltage pulses each having a trailing edge and a leading edge, at least one of said edges being of generally ramp-like form, a comparator having a first input to which said train of voltage pulses is applied, as second input to which a d.c. voltage level is applied and an output at which is developed a signal having one or two voltage levels dependent upon whether or not the voltage level of the train of voltage pulses exceeds said d.c. voltage level, whereby the comparator provides at its output a periodic rectangular wave signal having at least one transistion of which the phase is dependent upon said d.c. voltage level.
61 Citations
9 Claims
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1. Signal processing apparatus comprising:
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an electronic device having a signal input, a signal output and a clock input; a circuit having an output at which it provides a first train of voltage pulses; means for converting said first train of voltage pulses into a second train of voltage pulses each having a trailing edge and a leading edge, at least one of said edges being of generally ramp-like form; a comparator having a first input to which said second train of voltage pulses is applied, a second input to which a reference d.c. voltage level is applied and an output at which is developed a periodic rectangular wave signal having a duty cycle which is a function of the reference d.c. voltage level, the periodic rectangular wave signal being input to the clock input of said electronic device such that said electronic device is clocked by the periodic rectangular wave signal in a time relationship to said first train of voltage pulses that is adjustable in dependence upon said reference d.c. voltage level; and means for generating the reference d.c. voltage level from the periodic rectangular wave signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification