JPS524879A - Electronic clock - Google Patents

Electronic clock

Info

Publication number
JPS524879A
JPS524879A JP50081294A JP8129475A JPS524879A JP S524879 A JPS524879 A JP S524879A JP 50081294 A JP50081294 A JP 50081294A JP 8129475 A JP8129475 A JP 8129475A JP S524879 A JPS524879 A JP S524879A
Authority
JP
Japan
Prior art keywords
electronic clock
liquid crystal
impressing
intensity
detection means
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.)
Granted
Application number
JP50081294A
Other languages
Japanese (ja)
Other versions
JPS5824757B2 (en
Inventor
Isamu Washitsuka
Hirohide 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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP50081294A priority Critical patent/JPS5824757B2/en
Publication of JPS524879A publication Critical patent/JPS524879A/en
Publication of JPS5824757B2 publication Critical patent/JPS5824757B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0047—Details electrical, e.g. selection or application of the operating voltage
    • G04G9/0052—Details electrical, e.g. selection or application of the operating voltage using means to adjust the display in accordance with the ambient light, e.g. switching or controlling a supplementary light source

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

PURPOSE:Prevent lowering of liquid crystal life by impressing an AC voltage below the threshold value to the liquid crystal by the output of a detection means when the intensity of external light becomes lower than a predetermined value.
JP50081294A 1975-06-30 1975-06-30 densid cay Expired JPS5824757B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50081294A JPS5824757B2 (en) 1975-06-30 1975-06-30 densid cay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50081294A JPS5824757B2 (en) 1975-06-30 1975-06-30 densid cay

Publications (2)

Publication Number Publication Date
JPS524879A true JPS524879A (en) 1977-01-14
JPS5824757B2 JPS5824757B2 (en) 1983-05-23

Family

ID=13742351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50081294A Expired JPS5824757B2 (en) 1975-06-30 1975-06-30 densid cay

Country Status (1)

Country Link
JP (1) JPS5824757B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752975A (en) * 1995-11-15 1998-05-19 Mesotes Co., Ltd. Device for increasing the electric field of therapeutic apparatuses

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4971550A (en) * 1972-11-14 1974-07-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4971550A (en) * 1972-11-14 1974-07-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752975A (en) * 1995-11-15 1998-05-19 Mesotes Co., Ltd. Device for increasing the electric field of therapeutic apparatuses

Also Published As

Publication number Publication date
JPS5824757B2 (en) 1983-05-23

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