JPS54109361A - Variable-ratio-frequency multiplier circuit - Google Patents

Variable-ratio-frequency multiplier circuit

Info

Publication number
JPS54109361A
JPS54109361A JP1624078A JP1624078A JPS54109361A JP S54109361 A JPS54109361 A JP S54109361A JP 1624078 A JP1624078 A JP 1624078A JP 1624078 A JP1624078 A JP 1624078A JP S54109361 A JPS54109361 A JP S54109361A
Authority
JP
Japan
Prior art keywords
output
circuit
counter
frequency
period
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.)
Pending
Application number
JP1624078A
Other languages
Japanese (ja)
Inventor
Ryoji Toyokawa
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP1624078A priority Critical patent/JPS54109361A/en
Publication of JPS54109361A publication Critical patent/JPS54109361A/en
Pending legal-status Critical Current

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  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE: To obtain a frequency multiplied at any variable ratio with its output pulse interval uniformed through accurate operation over the broad frequency range of an input signal by making the input signal into an output with M/N-time period accurately.
CONSTITUTION: A signal of period (ti) from the input terminal is applied to control circuit 2 via waveform-shaping circuit 1, and the output of this circuit 2 is applied to FF3 which sets and resets repeatedly according to period (t1) of the input signal. Further, the output of FF3 is applied to gate circuit 4 and the output of divider circuit 6 which divides a main clock of frequency (fm) of clock generator 5 by M is gated. Then, the output of circuit 4 is applied to preset counter 7 which presets by the output of circuit 2, and the output of this counter 7 is applied to output counter 10 via registers 8 and 9 under the control of circuit 2. Next, counter 10 is applied a frequency obtained by dividing the frequency of generator 5 by Nfm by divider circuit 11 and then, output signal (to) is outputted at a period when this discrete value agrees with the discrete value from counter 7.
COPYRIGHT: (C)1979,JPO&Japio
JP1624078A 1978-02-15 1978-02-15 Variable-ratio-frequency multiplier circuit Pending JPS54109361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1624078A JPS54109361A (en) 1978-02-15 1978-02-15 Variable-ratio-frequency multiplier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1624078A JPS54109361A (en) 1978-02-15 1978-02-15 Variable-ratio-frequency multiplier circuit

Publications (1)

Publication Number Publication Date
JPS54109361A true JPS54109361A (en) 1979-08-27

Family

ID=11911026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1624078A Pending JPS54109361A (en) 1978-02-15 1978-02-15 Variable-ratio-frequency multiplier circuit

Country Status (1)

Country Link
JP (1) JPS54109361A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839116A (en) * 1981-09-02 1983-03-07 Japan Radio Co Ltd Pulse generating device
US5644288A (en) * 1994-06-20 1997-07-01 Nippondenso Co., Ltd. Vehicle speed detecting apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040976A (en) * 1973-07-18 1975-04-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040976A (en) * 1973-07-18 1975-04-15

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839116A (en) * 1981-09-02 1983-03-07 Japan Radio Co Ltd Pulse generating device
JPH029728B2 (en) * 1981-09-02 1990-03-05 Japan Radio Co Ltd
US5644288A (en) * 1994-06-20 1997-07-01 Nippondenso Co., Ltd. Vehicle speed detecting apparatus

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