EP1571508A1 - Verfahren zur Anzeige der Weltzeit mit einer automatischen Korrektur der Sommerzeit in einer Bewegung - Google Patents

Verfahren zur Anzeige der Weltzeit mit einer automatischen Korrektur der Sommerzeit in einer Bewegung Download PDF

Info

Publication number
EP1571508A1
EP1571508A1 EP04004734A EP04004734A EP1571508A1 EP 1571508 A1 EP1571508 A1 EP 1571508A1 EP 04004734 A EP04004734 A EP 04004734A EP 04004734 A EP04004734 A EP 04004734A EP 1571508 A1 EP1571508 A1 EP 1571508A1
Authority
EP
European Patent Office
Prior art keywords
time
dst
display unit
time zone
movement
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.)
Withdrawn
Application number
EP04004734A
Other languages
English (en)
French (fr)
Inventor
Chin Yuh Chen
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.)
Duteck Industrial Co Ltd
Duteck Ind Co Ltd
Original Assignee
Duteck Industrial Co Ltd
Duteck Ind 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 Duteck Industrial Co Ltd, Duteck Ind Co Ltd filed Critical Duteck Industrial Co Ltd
Priority to EP04004734A priority Critical patent/EP1571508A1/de
Publication of EP1571508A1 publication Critical patent/EP1571508A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0076—Visual time or date indication means in which the time in another time-zone or in another city can be displayed at will

Definitions

  • the present invention relates to a method of displaying a world time with automatic correction of a daylight saving time ( DST ) in a movement, wherein a correct time including DST effect can be acquired by adjusting once.
  • DST daylight saving time
  • Greenwich mean time is used as a worldwide time standard.
  • the globe is divided into 24 time zones (0-24hrs). Two adjacent time zones have a time difference of one hour.
  • a time difference of one hour occurs.
  • a conventional clock either a mechanical or an electronic type, shows only the time of one fixed time zone.
  • the clock When the clock is used in a different time zone, it must be adjusted according to the correct time in that time zone, and is therefore inconvenient for use.
  • Fig. 1 shows a clock available from CASIOTM for showing times of different time zones in the world.
  • a rotary disk 92 is installed around a periphery of a time display unit 91 (including a hour hand, a minute hand and a second hand).
  • the rotary disk 92 is circumferentially divided into 24 segments that corresponding to 24 time zones.
  • the clock is adjusted to show the time of an adjacent time zone, as shown in Figs. 2A and 2B.
  • the internal mechanical structure of the clock would move the hour hand forward or backward by one hour to represent the one-hour time difference between the current and the adjacent time zones.
  • radio control clock which emits a radio wave from a base station to a user having a corresponding receiver. While the radio control clock may advantageously show world times, including the DST, it has the problem of dead angles, at where the user could not receive the signal of radio wave emitted from the base station. Moreover, the radio control clock has limited range of use, and is therefore not workable in some places.
  • the primary object of the present invention is to provide a movement for automatically correcting daylight saving time ( DST ) which comprises a time display unit for displaying time; a central processing unit ( CPU ) building with a time difference and DST calculating program for calculating correct time and displaying on the time display unit; and a time zone adjusting unit installed with 24 time zone segments ; as one of the 24 time zone segments is selected.
  • the CPU receives the time zone signals from the time zone adjusting unit and calculated a correct time based on the selected time zone section and a DST of the selected time zone, and then control the time display unit to display the correct time. Thereby, a correct time can be got by adjusting once.
  • Another object of the present invention is to provide a movement for automatically correcting DST, wherein no wireless control signal is used so that it is not confine by the range.
  • Another object of the present invention is to provide a movement for automatically correcting DST, wherein calculation of the DST in the DST calculating program is based on the DST of an area in the time zone which is determined by the nation the area belonged.
  • a further object of the present invention is to provide a method of displaying a world time with automatic correction of a DST in a movement, in which a DST operation program is included to define the American (US) DST from 02:00 of the first Sunday of April to 02:00 of the last Sunday of October each year, and the European (EUR) DST from 02:00 of the last Sunday of March to 03:00 of the last Sunday of October each year.
  • the clock movement includes a CPU that automatically corrects the time shown on the clock at the beginning or ending time of the DST based on the time zone specified via the time zone adjusting mechanism and information about whether the DST is adopted in that time zone.
  • a yet object of the present invention is to provide a method of displaying a world time with automatic correction of a DST in a movement, in which a mode control key is included. After a return-to-zero operation is done via the mode control key, the clock movement may be set to a desired time zone (or city). Then, a user may select whether to turn on the DST operational function, and then inputs correct time of the set time zone to complete the setting of correct time.
  • a still object of the present invention is to provide a method of displaying a world time with automatic correction of a DST in a movement, wherein two contact sets are extended from the CPU.
  • the first contact set includes four contacts, while the second contact set includes six contacts.
  • two contacts are separately selected from the two contact sets to contact with each other. In this manner, total 24 different time zone signals may be generated for inputting into the CPU.
  • a still further object of the present invention is to provide a method of displaying a world time with automatic correction of a DST in a movement, in which an alarm function is included.
  • a still further object of the present invention is to provide a method of displaying a world time with automatic correction of a DST in a movement, which may be a mechanical clock and includes a CPU capable of operating and controlling a synchronous motor to rapidly turn the hour, the minute, and the second hand to show correct time.
  • a still further object of the present invention is to provide a digital clock configured for automatic correction of DST, of which the hour, the minute, and the second hand may be rapidly turned to show correct time after an operation of time conducted by a CPU.
  • a core 10 has a central processing unit ( CPU ) 11, mode selection keys 121, 122, and 123, a hour hand 131, a minute hand 132, a liquid crystal time display 14, a time zone adjusting unit 15, and an alarm switch 16.
  • CPU central processing unit
  • the CPU 11 is a programmable operation unit for controlling mechanical time display unit and liquid crystal time display unit to select a time zone to have a correct time.
  • the CPU 11 has at least two calculation modes, one is a time zone calculation program and the other is a DST calculating program.
  • Two contact sets 151, 152 are extended from the CPU 11.
  • One contact set has four contacts, and another has six contacts, which extends into the time zone adjusting unit 15.
  • any two contacts selected from the two contact sets, respectively contact the time zone adjusting unit so as to form 24 different time zone signals which are then inputted to the CPU 11.
  • Fig. 5 it is illustrated that one of the four contacts A, B, C and D and one of the six contacts 1, 2, 3, 4, 5, and 6 are in contact with one another so as to from different time zone signals.
  • A-1 is a +1 time zone
  • D-6 is a 0 time zone
  • C-6 is a -1 time zone, etc.
  • the DST adjusting program of the CPU 11 is shown in the flow of Fig. 6.
  • the program sets the DST adjustment of necessary nations.
  • the DST adjustment of U. S. is firstly defined as 02:00, the first Sunday of April to 02:00 of the last Sunday of October.
  • the DST adjustment is defined from 02:00 o'clock of the last Sunday of March to 03:00 o'clock of the last Sunday of October.
  • the CPU 11 calculates the DST adjustment as the time zone is within a period of DST adjustment so as to add the adjusting time to a contrast time without performing DST adjustment.
  • the movable mechanic display unit (hands) and the liquid crystal time display 14 serve to indicate correct time.
  • the time is directly indicated.
  • the whole core 10 is installed in a casing 20.
  • the mode selection keys include a mode key 121, an upward key 122 and a downward key 123.
  • the mechanical time display units 131, 132 are installed at a front center of the casing 20 and a periphery thereof has the time zone adjusting unit 15.
  • the time zone adjusting unit 15 is a disk rotatable step by step. Twenty four scales are shown on the time zone adjusting unit 15 for representing 24 time zones.
  • the setup key 153 serves to input signals into the CPU 11 by pressing the setup key 153 when the time zone adjusting unit 15 rotates to a desired time zone. Thereby, when the time zone adjusting unit 15 is rotated by mistake, the liquid crystal time display 14 displays data digitally.
  • the liquid crystal time display 14 will display a setup indication so as to reset the unit.
  • the minute hand 132 is adjusted to a position of twelve o'clock.
  • a minute hand adjusting button (at a backside of the casing 20, not shown) is adjusted so that the hour hand and minute hand also rotate to the position.
  • the liquid crystal time display 14 will display the DST adjustment on / off (DST / ON). If the time zone has not in the DST adjustment, the downward key 123 is pressed to turn off the function. Thereby, in DST period (DST), the time will not be adjusted.
  • the liquid crystal time display 14 will display year / 00.
  • the upward key 122 or downward key 123 are pressed to set and select a correct year.
  • the mode key 121 is pressed to display the month / 00. Then the upward key 122 or the downward key 123 can be pressed to select a correct month.
  • the mode key 121 is pressed to display day / 00. Then the upward key 122 or the downward key 123 is pressed to display a correct day.
  • the mode key 121 is pressed to display hour / 00. Then the upward key 122 or the downward key 123 is pressed to display a correct hour.
  • the mode key 121 is pressed to display minute / 00. Then the upward key 122 or the downward key 123 is pressed to display a correct minute.
  • the mode key 121 is pressed to complete all the setup operations, namely, to perform a reset operation, as shown in part A of Fig. 4.
  • the display screen will display the correct day and time.
  • the CPU 11 will calculate the time difference to drive a synchronous motor of the time zone adjusting unit 15 to move the hour hand, minute hand, and second hand to synchronously move to coincide with the setup time so that the hour hand, minute hand and second hour move to a determined position.
  • the setting operation is complete.
  • time zone adjusting unit 15 When the user desires to display time of different time zone, it is only necessary to adjust the time zone adjusting unit 15, namely to rotate a rotary disk to a time zone to be display (covering, for example, a city). Then the user select whether the time zone to be displayed is in a DST period. Then the time zone signal and DST selection signal generated from the adjustment of the time zone adjusting unit 15 are inputted into the CPU 11. The CPU 11 will calculate a relative time to emit pulse signals to control the mechanical time display unit and the liquid crystal time display to adjust to the corrected relative time.
  • the selection of world time is executed by keys on a liquid crystal display.
  • This is also a time adjusting device. Thereby, it is not confined by the rotary disk illustrated in Fig. 7.
  • an alarm unit can be added therein, as shown in part C of the drawing.
  • the alarm unit includes an alarm switch 16 and an adjusting key 161, which is similar to the general clock.
  • the operation process is illustrated in Fig. 8.
  • a synchronous motor serves to push a gear set to move the hour hand, minute hand, and second hand. Then the CPU 11 will receive input signals. After operation, pulse signals are emitted to adjust the time zone adjusting unit 15 to a correct display time by the synchronous motor. Referring to Fig. 9, after operation of the CPU 11, the pulse speed is increased so that movements of the mechanical time display unit (including the hour hand, minute hand, etc.) and the liquid crystal time display are adjusted synchronously.
  • the time zone adjusting unit can be removed and the DST program is set in the CPU 11. Then the present invention can display time with adjustment of the DST. Thereby, no manual adjustment is performed.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
EP04004734A 2004-03-01 2004-03-01 Verfahren zur Anzeige der Weltzeit mit einer automatischen Korrektur der Sommerzeit in einer Bewegung Withdrawn EP1571508A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04004734A EP1571508A1 (de) 2004-03-01 2004-03-01 Verfahren zur Anzeige der Weltzeit mit einer automatischen Korrektur der Sommerzeit in einer Bewegung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04004734A EP1571508A1 (de) 2004-03-01 2004-03-01 Verfahren zur Anzeige der Weltzeit mit einer automatischen Korrektur der Sommerzeit in einer Bewegung

Publications (1)

Publication Number Publication Date
EP1571508A1 true EP1571508A1 (de) 2005-09-07

Family

ID=34745965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04004734A Withdrawn EP1571508A1 (de) 2004-03-01 2004-03-01 Verfahren zur Anzeige der Weltzeit mit einer automatischen Korrektur der Sommerzeit in einer Bewegung

Country Status (1)

Country Link
EP (1) EP1571508A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010017627A1 (en) * 2008-08-14 2010-02-18 Dwight Darling Electronic presentation of world time zones

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920365A (en) * 1988-04-25 1990-04-24 Siemens Aktiengesellschaft Electronic digital timepiece having a separate key for controlling the switching of the display from standard to daylight savings time
EP0407165A2 (de) * 1989-07-07 1991-01-09 Citizen Watch Co., Ltd. Analog-Weltuhr
EP0652497A2 (de) * 1993-11-05 1995-05-10 Seiko Instruments Inc. Elektronische Uhr
US20020191492A1 (en) * 2001-06-14 2002-12-19 International Business Machines Corporation Electronic automatic world-wide time/clock synchronization method
US20040027921A1 (en) * 1998-04-06 2004-02-12 Emerson Radio Corp. Method and apparatus for automatically displaying a correct time and date when initially activating a clock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920365A (en) * 1988-04-25 1990-04-24 Siemens Aktiengesellschaft Electronic digital timepiece having a separate key for controlling the switching of the display from standard to daylight savings time
EP0407165A2 (de) * 1989-07-07 1991-01-09 Citizen Watch Co., Ltd. Analog-Weltuhr
EP0652497A2 (de) * 1993-11-05 1995-05-10 Seiko Instruments Inc. Elektronische Uhr
US20040027921A1 (en) * 1998-04-06 2004-02-12 Emerson Radio Corp. Method and apparatus for automatically displaying a correct time and date when initially activating a clock
US20020191492A1 (en) * 2001-06-14 2002-12-19 International Business Machines Corporation Electronic automatic world-wide time/clock synchronization method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010017627A1 (en) * 2008-08-14 2010-02-18 Dwight Darling Electronic presentation of world time zones
US8221125B2 (en) 2008-08-14 2012-07-17 World View Time Inc. Electronic presentation of world time zones

Similar Documents

Publication Publication Date Title
US20050190653A1 (en) Method of displaying world time with automatic correction of daylight saving time in a movement
US10126714B2 (en) Time display device, time display method, and recording medium
JP4462338B2 (ja) 電子時計、電子時計の時刻修正方法、電子時計の制御プログラム
US10289072B2 (en) Electronic timepiece and setting display method
JP6172168B2 (ja) 電子時計
JP6710918B2 (ja) アナログ表示装置
US20060239123A1 (en) Daylight saving time automatic adjustment method and timepiece using same
JP2017049228A (ja) 電子時計
KR102809298B1 (ko) 시계 설정 시스템
JP2011122952A (ja) アナログ電子時計
EP1571508A1 (de) Verfahren zur Anzeige der Weltzeit mit einer automatischen Korrektur der Sommerzeit in einer Bewegung
KR20030074173A (ko) 기도용 시계
JP2003202388A (ja) 電子時計、電子時計の表示制御方法および情報端末装置
JP6197810B2 (ja) 電子時計
JP2003121571A (ja) 電波時計
JP4227423B2 (ja) クロノグラフ時計
JP6507714B2 (ja) 電子時計
JP2006071469A (ja) 電波修正機能付き電子機器及びその制御方法
US20080198697A1 (en) Analog radio-controlled timepiece
CN100385979C (zh) 用于调整具有内置模拟表的终端中的时间的装置和方法
US11194293B2 (en) Electronic timepiece
JP7321324B2 (ja) 連携システム
JP7435565B2 (ja) 画面生成方法、プログラム及び情報処理装置
JP2016142546A (ja) 時計
JP7099501B2 (ja) 報知制御装置、時計、報知制御方法、およびプログラム

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20060131

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20061120

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20070331