JPS5513875A - Frequency detector - Google Patents

Frequency detector

Info

Publication number
JPS5513875A
JPS5513875A JP8692378A JP8692378A JPS5513875A JP S5513875 A JPS5513875 A JP S5513875A JP 8692378 A JP8692378 A JP 8692378A JP 8692378 A JP8692378 A JP 8692378A JP S5513875 A JPS5513875 A JP S5513875A
Authority
JP
Japan
Prior art keywords
pulses
frequency
input
input signal
pulse
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8692378A
Other languages
Japanese (ja)
Other versions
JPS6118989B2 (en
Inventor
Tetsuya Nakayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP8692378A priority Critical patent/JPS5513875A/en
Publication of JPS5513875A publication Critical patent/JPS5513875A/en
Publication of JPS6118989B2 publication Critical patent/JPS6118989B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measuring Frequencies, Analyzing Spectra (AREA)

Abstract

PURPOSE: To improve resolution and response by obtaining frequency information of an input signal by generating pulses of a frequency several times as high as that of the input signal and by counting the number of the pulses at a reference time.
CONSTITUTION: Input pulse P to be frequency-detected is inputted from one-shot circuit 1 to circuit 2, where pulses synchronizing with the rise and fall are generated respectively. Reference clocks generating part 3 generates reference clock pulse CP of a frequency much higher than that of input pulse P and it is led to dividers 4 to 12 to generate pulse signals having frequencies N times as high as that of the input signal, which are counted by counter 11. Therefore, frequency information of input pulses P updated invariably in a fixed reference period is outputted from latch circuit 15.
COPYRIGHT: (C)1980,JPO&Japio
JP8692378A 1978-07-17 1978-07-17 Frequency detector Granted JPS5513875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8692378A JPS5513875A (en) 1978-07-17 1978-07-17 Frequency detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8692378A JPS5513875A (en) 1978-07-17 1978-07-17 Frequency detector

Publications (2)

Publication Number Publication Date
JPS5513875A true JPS5513875A (en) 1980-01-31
JPS6118989B2 JPS6118989B2 (en) 1986-05-15

Family

ID=13900370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8692378A Granted JPS5513875A (en) 1978-07-17 1978-07-17 Frequency detector

Country Status (1)

Country Link
JP (1) JPS5513875A (en)

Also Published As

Publication number Publication date
JPS6118989B2 (en) 1986-05-15

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