JPS57120878A - Alarm device of electronic clock - Google Patents

Alarm device of electronic clock

Info

Publication number
JPS57120878A
JPS57120878A JP665281A JP665281A JPS57120878A JP S57120878 A JPS57120878 A JP S57120878A JP 665281 A JP665281 A JP 665281A JP 665281 A JP665281 A JP 665281A JP S57120878 A JPS57120878 A JP S57120878A
Authority
JP
Japan
Prior art keywords
time
alarm
counter
hand
alarm device
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
JP665281A
Other languages
Japanese (ja)
Inventor
Masaki Obayashi
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.)
RIKOO TOKEI KK
Ricoh Elemex Corp
Original Assignee
RIKOO TOKEI KK
Ricoh Elemex Corp
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 RIKOO TOKEI KK, Ricoh Elemex Corp filed Critical RIKOO TOKEI KK
Priority to JP665281A priority Critical patent/JPS57120878A/en
Publication of JPS57120878A publication Critical patent/JPS57120878A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To improve the working accuracy of alarm time by setting the alarm time with the hand of an analog display part displaying ordinary time thereby generating induced voltage. CONSTITUTION:In order to set alarm time, the hand is set at a desired time with an external operating member. When the hand is turned, a rotor 2 revolves, and induced voltage is generated in a coil 9 wound to a yoke 8. This voltage is detected and counted with a counter 10, whereby the number of revolutions of the rotor 2 is counted. From this counter, the signal is stored as time in a storage circuit 11. The storage time in the circuit 11 and the lapse time in a time counter 12 are inputted to a comparator 13, by which these are compared and when the times coincide,an alarm sound is produced from an alarm device 14.
JP665281A 1981-01-20 1981-01-20 Alarm device of electronic clock Pending JPS57120878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP665281A JPS57120878A (en) 1981-01-20 1981-01-20 Alarm device of electronic clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP665281A JPS57120878A (en) 1981-01-20 1981-01-20 Alarm device of electronic clock

Publications (1)

Publication Number Publication Date
JPS57120878A true JPS57120878A (en) 1982-07-28

Family

ID=11644307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP665281A Pending JPS57120878A (en) 1981-01-20 1981-01-20 Alarm device of electronic clock

Country Status (1)

Country Link
JP (1) JPS57120878A (en)

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