JPS5689082A - Alarm signal generating system - Google Patents

Alarm signal generating system

Info

Publication number
JPS5689082A
JPS5689082A JP16713079A JP16713079A JPS5689082A JP S5689082 A JPS5689082 A JP S5689082A JP 16713079 A JP16713079 A JP 16713079A JP 16713079 A JP16713079 A JP 16713079A JP S5689082 A JPS5689082 A JP S5689082A
Authority
JP
Japan
Prior art keywords
sound
alarm
agreed
signal generating
frequency
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
JP16713079A
Other languages
Japanese (ja)
Inventor
Mikio Yanagawa
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer Co 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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP16713079A priority Critical patent/JPS5689082A/en
Priority to GB8040096A priority patent/GB2068625A/en
Priority to DE19803047584 priority patent/DE3047584A1/en
Publication of JPS5689082A publication Critical patent/JPS5689082A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
    • G04G13/021—Details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Calculators And Similar Devices (AREA)

Abstract

PURPOSE: To release alarm sounds efficiently at a maximum sound volume by continuously generating plural kinds of frequency signals, and applying these, kind by kind, in predetermined order, to plural kinds of piezoelectric buzzers of different resonance frequencies.
CONSTITUTION: When the coincidence signal with an alarm time is outputted from the instruction decoder 7 in an LSI1 of a small electronic type computer or the like, a flip-flop 11 is set and holds a set state for a fixed time to drive a frequency signal generating part 12, which generates two kinds of frequency signals f1, f2 alternately continuously and applies these to a piezoelectric buzzer 13, thereby releasing an alarm sound. Therefore, f1 is agreed with the resonance frequency of the piezoelectric buzzer used for a certain model of computer, and f2 is agreed with that of other model, by which the sound of maximum sound volume and the sound of a small volume may be released alternately even if the device is used for both models, and the system of good efficiency is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP16713079A 1979-12-21 1979-12-21 Alarm signal generating system Pending JPS5689082A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP16713079A JPS5689082A (en) 1979-12-21 1979-12-21 Alarm signal generating system
GB8040096A GB2068625A (en) 1979-12-21 1980-12-15 Alarm sound generator
DE19803047584 DE3047584A1 (en) 1979-12-21 1980-12-17 ACOUSTIC ALARM GENERATOR FOR AN ELECTRONIC DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16713079A JPS5689082A (en) 1979-12-21 1979-12-21 Alarm signal generating system

Publications (1)

Publication Number Publication Date
JPS5689082A true JPS5689082A (en) 1981-07-20

Family

ID=15843980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16713079A Pending JPS5689082A (en) 1979-12-21 1979-12-21 Alarm signal generating system

Country Status (3)

Country Link
JP (1) JPS5689082A (en)
DE (1) DE3047584A1 (en)
GB (1) GB2068625A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106291171A (en) * 2016-07-28 2017-01-04 青岛海信智能商用系统有限公司 Buzzer volume calibration steps, device and system and frequency sound test frock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106291171A (en) * 2016-07-28 2017-01-04 青岛海信智能商用系统有限公司 Buzzer volume calibration steps, device and system and frequency sound test frock

Also Published As

Publication number Publication date
GB2068625A (en) 1981-08-12
DE3047584A1 (en) 1981-09-10

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