JPS57129126A - Frequency detecting system - Google Patents

Frequency detecting system

Info

Publication number
JPS57129126A
JPS57129126A JP1302481A JP1302481A JPS57129126A JP S57129126 A JPS57129126 A JP S57129126A JP 1302481 A JP1302481 A JP 1302481A JP 1302481 A JP1302481 A JP 1302481A JP S57129126 A JPS57129126 A JP S57129126A
Authority
JP
Japan
Prior art keywords
detecting system
frequency detecting
frequency
detecting
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
JP1302481A
Other languages
Japanese (ja)
Other versions
JPS6346648B2 (en
Inventor
Jiyuichi Saitou
Shiyunji Matsuoka
Hideo Mori
Teruhisa Ono
Kazuo Sano
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.)
TOUHOKU DENRIYOKU KK
Tohoku Electric Power Co Inc
Hitachi Ltd
Original Assignee
TOUHOKU DENRIYOKU KK
Tohoku Electric Power Co Inc
Hitachi 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 TOUHOKU DENRIYOKU KK, Tohoku Electric Power Co Inc, Hitachi Ltd filed Critical TOUHOKU DENRIYOKU KK
Priority to JP1302481A priority Critical patent/JPS57129126A/en
Publication of JPS57129126A publication Critical patent/JPS57129126A/en
Publication of JPS6346648B2 publication Critical patent/JPS6346648B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measuring Frequencies, Analyzing Spectra (AREA)
JP1302481A 1981-02-02 1981-02-02 Frequency detecting system Granted JPS57129126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1302481A JPS57129126A (en) 1981-02-02 1981-02-02 Frequency detecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1302481A JPS57129126A (en) 1981-02-02 1981-02-02 Frequency detecting system

Publications (2)

Publication Number Publication Date
JPS57129126A true JPS57129126A (en) 1982-08-11
JPS6346648B2 JPS6346648B2 (en) 1988-09-16

Family

ID=11821565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1302481A Granted JPS57129126A (en) 1981-02-02 1981-02-02 Frequency detecting system

Country Status (1)

Country Link
JP (1) JPS57129126A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61186865A (en) * 1985-02-14 1986-08-20 Meidensha Electric Mfg Co Ltd Frequency relay
JPS63228076A (en) * 1986-08-20 1988-09-22 Matsushita Electric Ind Co Ltd Digital period measuring instrument
JPS63285472A (en) * 1987-05-19 1988-11-22 Hitachi Ltd Detecting device of frequency
JP2013072784A (en) * 2011-09-28 2013-04-22 Pioneer Electronic Corp Signal period detection device and signal period detection method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61186865A (en) * 1985-02-14 1986-08-20 Meidensha Electric Mfg Co Ltd Frequency relay
JPH0740051B2 (en) * 1985-02-14 1995-05-01 株式会社明電舍 Frequency relay
JPS63228076A (en) * 1986-08-20 1988-09-22 Matsushita Electric Ind Co Ltd Digital period measuring instrument
JPS63285472A (en) * 1987-05-19 1988-11-22 Hitachi Ltd Detecting device of frequency
JP2013072784A (en) * 2011-09-28 2013-04-22 Pioneer Electronic Corp Signal period detection device and signal period detection method

Also Published As

Publication number Publication date
JPS6346648B2 (en) 1988-09-16

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