METHOD AND APPARATUS FOR DETECTING CUT-OFF FREQUENCY OF PULSE SIGNAL
First Claim
1. An apparatus for detecting a cut-off frequency of a pulse signal, the apparatus comprising:
- an input processor configured to generate a second pulse signal at a time when a rising edge and a falling edge of a first pulse signal appear, in a case the first pulse signal, which is a pulse signal of a monitoring object, is inputted;
a counter configured to count a clock signal relative to the second pulse signal generated by the input processor;
a reset processor configured to reset the counter at every predetermined (set) period; and
a detector configured to generate and output a cut-off frequency of a detection signal, in a case an output value of the counter exceeds a predetermined (set) threshold during the predetermined period.
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Abstract
Disclosed is a apparatus and method for detecting a cut-off frequency of a pulse signal, the apparatus including an input processor configured to generate a second pulse signal at a time when a rising edge and a falling edge of a first pulse signal appear, in a case the first pulse signal, which is a pulse signal of a monitoring object, is inputted, a counter configured to count a clock signal relative to the second pulse signal generated by the input processor, a reset processor configured to reset the counter at every predetermined (set) period, and a detector configured to generate and output a cut-off frequency of a detection signal, in a case an output value of the counter exceeds a predetermined (set) threshold during the predetermined period.
13 Citations
8 Claims
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1. An apparatus for detecting a cut-off frequency of a pulse signal, the apparatus comprising:
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an input processor configured to generate a second pulse signal at a time when a rising edge and a falling edge of a first pulse signal appear, in a case the first pulse signal, which is a pulse signal of a monitoring object, is inputted; a counter configured to count a clock signal relative to the second pulse signal generated by the input processor; a reset processor configured to reset the counter at every predetermined (set) period; and a detector configured to generate and output a cut-off frequency of a detection signal, in a case an output value of the counter exceeds a predetermined (set) threshold during the predetermined period. - View Dependent Claims (2, 3, 4)
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5. A method for detecting a cut-off frequency of a pulse signal, the method comprising:
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generating a second pulse signal at a time when a rising edge and a falling edge of a first pulse signal appear, in a case the first pulse signal, which is a pulse signal of a monitoring object, is inputted; counting a clock signal relative to the generated second pulse signal using a counter; generating a cut-off frequency of a detection signal, in a case a count value relative to the clock signal counted by the counter exceeds a predetermined (set) threshold during a predetermined (set) period; and resetting the counter for counting the clock signal at every predetermined (set)period. - View Dependent Claims (6, 7, 8)
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Specification