Frequency measurement device
AssigneeSeiko Epson Corporation
InventorMasayoshi Todorokihara
Life of this patent
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Abstract
A frequency measurement device for measuring a frequency of a signal to be measured including a pulse signal, includes: a signal multiplier section that multiplies the signal to be measured by n (n is an integer) and outputs a multiplied signal; a counter section that counts the multiplied signal with a predetermined gate time and outputs a count value of the frequency of the signal to be measured at a predetermined period; and a low-pass filter that outputs a signal corresponding to the frequency of the signal to be measured based on the count value outputted at the predetermined period.
Claims4
A frequency measurement device that measures a frequency of a signal to be measured including a pulse signal, the frequency measuring device comprising:
- a signal multiplier section that multiplies the signal to be measured by n (n is an integer), and that outputs a multiplied signal;
- a counter section that counts the multiplied signal during a gate time, and that outputs a count value of the frequency of the multiplied signal;
- and
- the low-pass filter that outputs an output signal based on the count value.
Dependencies are inferred from the claim text.