JPS5285852A - Electronic portable watch - Google Patents

Electronic portable watch

Info

Publication number
JPS5285852A
JPS5285852A JP169076A JP169076A JPS5285852A JP S5285852 A JPS5285852 A JP S5285852A JP 169076 A JP169076 A JP 169076A JP 169076 A JP169076 A JP 169076A JP S5285852 A JPS5285852 A JP S5285852A
Authority
JP
Japan
Prior art keywords
electronic portable
portable watch
decrease
power consumption
alternating voltage
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
JP169076A
Other languages
Japanese (ja)
Inventor
Sadatsugu Miura
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP169076A priority Critical patent/JPS5285852A/en
Publication of JPS5285852A publication Critical patent/JPS5285852A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
    • G04G9/10—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques by controlling light sources, e.g. electroluminescent diodes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

PURPOSE:To decrease the power consumption of time display without causing uneven brightness by subjecting hot cathode filaments to alternating voltage driving at a frequency above 20Hz.
JP169076A 1976-01-08 1976-01-08 Electronic portable watch Pending JPS5285852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP169076A JPS5285852A (en) 1976-01-08 1976-01-08 Electronic portable watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP169076A JPS5285852A (en) 1976-01-08 1976-01-08 Electronic portable watch

Publications (1)

Publication Number Publication Date
JPS5285852A true JPS5285852A (en) 1977-07-16

Family

ID=11508504

Family Applications (1)

Application Number Title Priority Date Filing Date
JP169076A Pending JPS5285852A (en) 1976-01-08 1976-01-08 Electronic portable watch

Country Status (1)

Country Link
JP (1) JPS5285852A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003029711A (en) * 2001-07-13 2003-01-31 Noritake Itron Corp Driving method and drive circuit for fluorescent character display tube
JP2010145788A (en) * 2008-12-19 2010-07-01 Noritake Itron Corp Power supply circuit device of fluorescent display tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003029711A (en) * 2001-07-13 2003-01-31 Noritake Itron Corp Driving method and drive circuit for fluorescent character display tube
JP2010145788A (en) * 2008-12-19 2010-07-01 Noritake Itron Corp Power supply circuit device of fluorescent display tube

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