JPS51112226A - Tone detection system - Google Patents

Tone detection system

Info

Publication number
JPS51112226A
JPS51112226A JP50036780A JP3678075A JPS51112226A JP S51112226 A JPS51112226 A JP S51112226A JP 50036780 A JP50036780 A JP 50036780A JP 3678075 A JP3678075 A JP 3678075A JP S51112226 A JPS51112226 A JP S51112226A
Authority
JP
Japan
Prior art keywords
detection system
tone detection
multipling
shorten
pulses
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
JP50036780A
Other languages
Japanese (ja)
Inventor
Takashi 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.)
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 JP50036780A priority Critical patent/JPS51112226A/en
Publication of JPS51112226A publication Critical patent/JPS51112226A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To shorten a detection time by n times multipling a tone signal which is changed into pulses by a mono-stable multivibrator.
COPYRIGHT: (C)1976,JPO&Japio
JP50036780A 1975-03-28 1975-03-28 Tone detection system Pending JPS51112226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50036780A JPS51112226A (en) 1975-03-28 1975-03-28 Tone detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50036780A JPS51112226A (en) 1975-03-28 1975-03-28 Tone detection system

Publications (1)

Publication Number Publication Date
JPS51112226A true JPS51112226A (en) 1976-10-04

Family

ID=12479275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50036780A Pending JPS51112226A (en) 1975-03-28 1975-03-28 Tone detection system

Country Status (1)

Country Link
JP (1) JPS51112226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343186U (en) * 1976-09-18 1978-04-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343186U (en) * 1976-09-18 1978-04-13
JPS5853475Y2 (en) * 1976-09-18 1983-12-05 三菱電機株式会社 Electromagnetic brake device

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