JPS56147092A - Watch processing method using microcomputer - Google Patents

Watch processing method using microcomputer

Info

Publication number
JPS56147092A
JPS56147092A JP5038580A JP5038580A JPS56147092A JP S56147092 A JPS56147092 A JP S56147092A JP 5038580 A JP5038580 A JP 5038580A JP 5038580 A JP5038580 A JP 5038580A JP S56147092 A JPS56147092 A JP S56147092A
Authority
JP
Japan
Prior art keywords
cpu
power source
commercial
watch
case
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
JP5038580A
Other languages
Japanese (ja)
Inventor
Yoshinori Kudo
Toshiaki Sagawa
Sumio Nakagawa
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 JP5038580A priority Critical patent/JPS56147092A/en
Publication of JPS56147092A publication Critical patent/JPS56147092A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/10—Arrangements for supplying back-up power

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Power Sources (AREA)

Abstract

PURPOSE:To realize a watch processing even in a service interruption for a watch using a commercial AC power source, by giving a temperature compensation to the oscillation frequency of an oscillating circuit within CPU in case a service interruption occurs. CONSTITUTION:In case the commercial AC power source 4 is supplied, the commercial AC frequency is applied to the CPU via the clock input circuit 6 and in the form of the reference clock. The CPU counts the reference clock and then displays the time on the display device 10 via the memory 2. In the case of a service intertuption, the CPU power source is switched to the backup power source 7. At the same time, the information of the temperature sensor 8 is supplied to the oscillating circuit 3 in the CPU via the A/D converter 9, and a compensation of temperature is given to the oscillation frequency. The frequency received a temperature compensation is used for the reference clock to be applied to the display device 10 through the memory 2. In such way, a watch processing is performed even in a service interruption.
JP5038580A 1980-04-18 1980-04-18 Watch processing method using microcomputer Pending JPS56147092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5038580A JPS56147092A (en) 1980-04-18 1980-04-18 Watch processing method using microcomputer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5038580A JPS56147092A (en) 1980-04-18 1980-04-18 Watch processing method using microcomputer

Publications (1)

Publication Number Publication Date
JPS56147092A true JPS56147092A (en) 1981-11-14

Family

ID=12857393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5038580A Pending JPS56147092A (en) 1980-04-18 1980-04-18 Watch processing method using microcomputer

Country Status (1)

Country Link
JP (1) JPS56147092A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6172930A (en) * 1984-09-17 1986-04-15 Matsushita Electric Ind Co Ltd Control device for combustion equipment
JPS63126020A (en) * 1986-11-14 1988-05-30 Matsushita Electric Ind Co Ltd Timing control device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6172930A (en) * 1984-09-17 1986-04-15 Matsushita Electric Ind Co Ltd Control device for combustion equipment
JPH025976B2 (en) * 1984-09-17 1990-02-06 Matsushita Electric Ind Co Ltd
JPS63126020A (en) * 1986-11-14 1988-05-30 Matsushita Electric Ind Co Ltd Timing control device

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