JPS55154485A - Electronic wristwatch - Google Patents

Electronic wristwatch

Info

Publication number
JPS55154485A
JPS55154485A JP6248679A JP6248679A JPS55154485A JP S55154485 A JPS55154485 A JP S55154485A JP 6248679 A JP6248679 A JP 6248679A JP 6248679 A JP6248679 A JP 6248679A JP S55154485 A JPS55154485 A JP S55154485A
Authority
JP
Japan
Prior art keywords
display
light
hand
varying intensities
ccds
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
JP6248679A
Other languages
Japanese (ja)
Inventor
Masayuki Miyamoto
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 Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP6248679A priority Critical patent/JPS55154485A/en
Publication of JPS55154485A publication Critical patent/JPS55154485A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0082—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08

Landscapes

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

Abstract

PURPOSE:To make possible the time setting of both display mechanisms of hand type display and digital type display by performing the position detection of the hands used for the hand type display by the varying intensities of the quantity of light. CONSTITUTION:In the electronic wristwatch provided with both display mechanisms of analog display and digital display, the watch body 1 is provided with the minute hand 2 and hour hand 3 of the analog display mechanism and digital display part 4 on its dial 6. The detection of the varying intensities of the quantity of light is accomplished by CCDs10-12. In order to give boundaries to the CCDs, a ring 13 insensitive to the varying intensities of the quantity of light is fitted. With the ring 13 in-between, 60 pieces of the CCDs10 are embedded on the dial. 60 pieces of the CCDs correspond to 0-59min and 12 pieces of the CCDs to 0-11 o'clock. In order to give the varying intensities of the quantity of light, lamps 14 having areas smaller than the chip area of one CCD chip are embedded on the back side of the hour hand 8 and minute hand 7.
JP6248679A 1979-05-21 1979-05-21 Electronic wristwatch Pending JPS55154485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6248679A JPS55154485A (en) 1979-05-21 1979-05-21 Electronic wristwatch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6248679A JPS55154485A (en) 1979-05-21 1979-05-21 Electronic wristwatch

Publications (1)

Publication Number Publication Date
JPS55154485A true JPS55154485A (en) 1980-12-02

Family

ID=13201548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6248679A Pending JPS55154485A (en) 1979-05-21 1979-05-21 Electronic wristwatch

Country Status (1)

Country Link
JP (1) JPS55154485A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2058692A1 (en) * 2007-11-08 2009-05-13 Seiko Epson Corporation Display device and timepiece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2058692A1 (en) * 2007-11-08 2009-05-13 Seiko Epson Corporation Display device and timepiece
US8194222B2 (en) 2007-11-08 2012-06-05 Seiko Epson Corporation Display device and timepiece
US8873015B2 (en) 2007-11-08 2014-10-28 Seiko Epson Corporation Display device and timepiece comprising a wiring board layered on a back surface of a back substrate

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