JPS55107984A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS55107984A
JPS55107984A JP1447579A JP1447579A JPS55107984A JP S55107984 A JPS55107984 A JP S55107984A JP 1447579 A JP1447579 A JP 1447579A JP 1447579 A JP1447579 A JP 1447579A JP S55107984 A JPS55107984 A JP S55107984A
Authority
JP
Japan
Prior art keywords
color
signal
time
lcd9
drive circuit
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
JP1447579A
Other languages
Japanese (ja)
Inventor
Toshiyuki Ito
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP1447579A priority Critical patent/JPS55107984A/en
Publication of JPS55107984A publication Critical patent/JPS55107984A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electric Clocks (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE: To discriminate am or pm at a glance by altering the color of an indicator for indicating the time.
CONSTITUTION: The frequency of a standard oscillator 1 is divided by a frequency divider 2, and converted through a counter by a decoder 6 into a time display signal. This signal drives and indicates through a drive circuit 7 an LCD9. When the time is changed from am to pm or vice versa, a discriminator 10 discriminates the change to produce a discrimination signal therefrom. This signal alters the voltage supplied from a power supply circuit 8 to a drive circuit 7 to accordingly alter the color of the LCD9. This is similarly operated in case of an analog display by the LCD. Since the color of the display number is altered between the am and the pm, it can provide a watch which can be readily identified.
COPYRIGHT: (C)1980,JPO&Japio
JP1447579A 1979-02-09 1979-02-09 Electronic watch Pending JPS55107984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1447579A JPS55107984A (en) 1979-02-09 1979-02-09 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1447579A JPS55107984A (en) 1979-02-09 1979-02-09 Electronic watch

Publications (1)

Publication Number Publication Date
JPS55107984A true JPS55107984A (en) 1980-08-19

Family

ID=11862079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1447579A Pending JPS55107984A (en) 1979-02-09 1979-02-09 Electronic watch

Country Status (1)

Country Link
JP (1) JPS55107984A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581612A (en) * 1982-03-29 1986-04-08 Smiths Industries Public Limited Company Display with matrix array of elements
US4785432A (en) * 1987-03-26 1988-11-15 Karel Havel Digital display timepiece
US5381388A (en) * 1993-07-28 1995-01-10 Technomarket, L.P. Digital clock

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581612A (en) * 1982-03-29 1986-04-08 Smiths Industries Public Limited Company Display with matrix array of elements
US4785432A (en) * 1987-03-26 1988-11-15 Karel Havel Digital display timepiece
US5381388A (en) * 1993-07-28 1995-01-10 Technomarket, L.P. Digital clock
WO1995004310A1 (en) * 1993-07-28 1995-02-09 Technomarket, L.P. Digital clock
US5487053A (en) * 1993-07-28 1996-01-23 Technomarket, L.P. Digital clock

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