JPS53172A - Frequency detection method - Google Patents

Frequency detection method

Info

Publication number
JPS53172A
JPS53172A JP7326676A JP7326676A JPS53172A JP S53172 A JPS53172 A JP S53172A JP 7326676 A JP7326676 A JP 7326676A JP 7326676 A JP7326676 A JP 7326676A JP S53172 A JPS53172 A JP S53172A
Authority
JP
Japan
Prior art keywords
detection method
frequency detection
promote
accuracy
changing
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
JP7326676A
Other languages
English (en)
Inventor
Terunobu Miyazaki
Kazuo Seo
Yoshiteru Miki
Junichi Makino
Masuo Goto
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.)
Hitachi Ltd
Original Assignee
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7326676A priority Critical patent/JPS53172A/ja
Publication of JPS53172A publication Critical patent/JPS53172A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Frequencies, Analyzing Spectra (AREA)
JP7326676A 1976-06-23 1976-06-23 Frequency detection method Pending JPS53172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7326676A JPS53172A (en) 1976-06-23 1976-06-23 Frequency detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7326676A JPS53172A (en) 1976-06-23 1976-06-23 Frequency detection method

Publications (1)

Publication Number Publication Date
JPS53172A true JPS53172A (en) 1978-01-05

Family

ID=13513186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7326676A Pending JPS53172A (en) 1976-06-23 1976-06-23 Frequency detection method

Country Status (1)

Country Link
JP (1) JPS53172A (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5622182U (ja) * 1979-07-31 1981-02-27
JPS59200521A (ja) * 1983-04-27 1984-11-13 Yaskawa Electric Mfg Co Ltd 正弦波信号の零交差点検出方法
JPS61186865A (ja) * 1985-02-14 1986-08-20 Meidensha Electric Mfg Co Ltd 周波数継電器
JPS63228076A (ja) * 1986-08-20 1988-09-22 Matsushita Electric Ind Co Ltd デイジタル周期測定装置
JPS63285472A (ja) * 1987-05-19 1988-11-22 Hitachi Ltd 周波数検出装置
US5184044A (en) * 1990-08-13 1993-02-02 Welch Allyn, Inc. Dental curing lamp
JP2012167971A (ja) * 2011-02-14 2012-09-06 Synthesize Ltd 受信時間の検出方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126277A (ja) * 1974-03-22 1975-10-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126277A (ja) * 1974-03-22 1975-10-03

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5622182U (ja) * 1979-07-31 1981-02-27
JPS59200521A (ja) * 1983-04-27 1984-11-13 Yaskawa Electric Mfg Co Ltd 正弦波信号の零交差点検出方法
JPS61186865A (ja) * 1985-02-14 1986-08-20 Meidensha Electric Mfg Co Ltd 周波数継電器
JPS63228076A (ja) * 1986-08-20 1988-09-22 Matsushita Electric Ind Co Ltd デイジタル周期測定装置
JPS63285472A (ja) * 1987-05-19 1988-11-22 Hitachi Ltd 周波数検出装置
US5184044A (en) * 1990-08-13 1993-02-02 Welch Allyn, Inc. Dental curing lamp
JP2012167971A (ja) * 2011-02-14 2012-09-06 Synthesize Ltd 受信時間の検出方法

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