EP1510891A1 - Funkuhr mit analogem Anzeiger und digitaler Projektion - Google Patents

Funkuhr mit analogem Anzeiger und digitaler Projektion Download PDF

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Publication number
EP1510891A1
EP1510891A1 EP03252505A EP03252505A EP1510891A1 EP 1510891 A1 EP1510891 A1 EP 1510891A1 EP 03252505 A EP03252505 A EP 03252505A EP 03252505 A EP03252505 A EP 03252505A EP 1510891 A1 EP1510891 A1 EP 1510891A1
Authority
EP
European Patent Office
Prior art keywords
control unit
clock
micro
time display
display
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Withdrawn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
EP03252505A
Other languages
English (en)
French (fr)
Inventor
Ho Chuen Units 2304-06 23/F Riley House Tam
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.)
Hideki Electronics Ltd
Original Assignee
Hideki Electronics 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 Hideki Electronics Ltd filed Critical Hideki Electronics Ltd
Priority to EP03252505A priority Critical patent/EP1510891A1/de
Publication of EP1510891A1 publication Critical patent/EP1510891A1/de
Withdrawn legal-status Critical Current

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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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal

Definitions

  • the present invention relates to a remotely controlled analogue display clock with digital projection of a time display. More particularly, although not exclusively, the invention relates to a digital clock having a primary micro-control unit receiving remote radio signals and sending pulses to a gearbox of an analogue time display as well as sending pulses to a secondary micro-control unit for displaying time digitally.
  • Micro-control units for radio controlled digital clocks are expensive.
  • micro-control units for standard digital clocks are inexpensive.
  • Radio controlled digital clocks having analogue time read-outs are also known.
  • a radio controlled digital clock having an analogue display as well as a projected digital display, one is faced with the problem of duplicated costs in the expensive micro-control units.
  • radio controlled clock comprising:
  • the clock further comprises a light emitter and photo-coupler associated with the mechanical analogue time display and the primary micro-control unit to transmit a zero signal to the secondary micro-control unit at 12 o'clock.
  • the clock furt comprises a gearbox associated with the mechanical analogue time display and the primary micro-control unit, the gearbox adapted to transmit minute counting pulses to the secondary micro-control unit.
  • the gearbox is further adapted to transmit second counting pulses to the secondary micro-control unit.
  • the light emitter comprises an LED and the photo-coupler comprises a photo transistor adapted to receive light of the LED reflected from a minute hand of the mechanical analogue time display at a 12 o'clock position.
  • the mechanical analogue time display further comprises coaxial hour, minute and second gears wherein the hour and minute gears each comprise a slot at a 12 o'clock position and the second gear comprises a reflective mirror at a 12 o'clock position and wherein the slots and the reflective mirror are aligned with the light emitter and photo transistor at 12 o'clock.
  • the digital time display is projected onto a remote surface.
  • FIG. 1 of the accompanying drawings there is depicted schematically in block diagram form a general radio controlled analogue movement 10 comprising an antenna 11 and a receiver 12.
  • the receiver 12 transmit a radio controlled signal 13 to a primary micro-control unit 14 after having received and enables signal 15.
  • the primary micro-control unit transmits minute counting pulses 16 and second counting pulses 17 to a gearbox 18 and a secondary micro-control unit 19.
  • the secondary micro-control unit 19 is an inexpensive off-the-shelf item as produced by many manufacturers.
  • the secondary micro-control unit 19 transmits signals to a digital time projector 20 for displaying the time on a bedroom ceiling or wall for example.
  • a digital time projector 20 for displaying the time on a bedroom ceiling or wall for example.
  • a photo-coupler 23 Associated with the primary micro-control unit 14 is a photo-coupler 23 to be described with reference to Figures 3 and 4. Suffice to say the time being that the photo coupler receives a zero signal from the primary micro-control unit and reflects that back to the primary micro-control unit and the secondary micro-control unit, only when the hour hand of the analogue display clock points to 12.
  • FIG. 2 there is illustrated the logic steps associated with the electronics of the clock.
  • a battery is installed into the clock.
  • the primary micro-control unit resets the hour, minute and second hands to 12 o'clock.
  • the photo coupler produces a reflected zero signal to the primary micro-control unit.
  • the secondary micro-control unit receives the zero signal and resets its display to "12:00".
  • the analogue movement begins receiving radio signals from a remote transmitter via its antenna 11. If a radio signal is received, the analogue movement will transmit counting pulses to the gearbox 18. The hour, minute and second hands will commence moving to display correct time.
  • the secondary micro-control unit also receives counting pulses to calculate hours, minutes and seconds to be displayed.
  • the analogue movement and the digital display both show the correct time synchronously.
  • the digital clock After receiving the radio signals, the digital clock will aligned every 12 hours by using the zero signal from the analogue movement.
  • the 12/24 hour key 22 can be used to change the digital projection time in either 12 or 24-hour format. If it is held for three seconds say, the digitally projected time will include and "AM" or "PM" display.
  • the "flip key” 21 can be used to turn the projected time through 180 degrees for convenience of projection.
  • FIG 3 there is shown an analogue mechanical clock face 30 having its hour, minute and second hands aligned at 12 o'clock.
  • the gears of the analogue display clock and associated hardware are shown in Figure 4.
  • the LED 31 emits a beam of light through a slot 32 in an hour gear 33 only when the hour hand is that the 12 o'clock position.
  • the beam of light then passes through a slot 34 in a minute gear 35, but only when the minute gear is that the 12 o'clock position.
  • the second gear 36 has a reflective mirror 37 at the 12 o'clock position.
  • the beam of light emitted by the LED 31 is reflected back through the slots 32 and 33 to a phototransistor 37.
  • the phototransistor in turn relays a reflected zero signal 38 to the primary micro-control unit 14 and the secondary micro-control unit 19.
  • Figures 5, 6, 7 and 8 show pulse signals applicable on the various conditions as described above.
  • the primary micro-control unit When the primary micro-control unit receives radio signals via its antenna, it will transmit a number of minute and second counting pulses to the gearbox.
  • the number of second counting pulses 0 (no second counting pulses) so the secondary micro-control unit will capture the correct number of minute and second counting pulses to calculate what the time is and synchronised directly with the by Mary micro-control unit.
  • the secondary micro-control unit will be counting up for the seconds display passed to the gearbox e.g. "03:15:01". However, the secondary micro-control unit calculates its own seconds.
  • the primary micro-control unit transmits minute counting pulses to the gearbox for driving the minute step motor.
  • the secondary micro-control unit can then use the minute counting pulses to check and synchronised the projected digital time with that of the primary micro-control unit.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
EP03252505A 2003-04-17 2003-04-17 Funkuhr mit analogem Anzeiger und digitaler Projektion Withdrawn EP1510891A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03252505A EP1510891A1 (de) 2003-04-17 2003-04-17 Funkuhr mit analogem Anzeiger und digitaler Projektion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03252505A EP1510891A1 (de) 2003-04-17 2003-04-17 Funkuhr mit analogem Anzeiger und digitaler Projektion

Publications (1)

Publication Number Publication Date
EP1510891A1 true EP1510891A1 (de) 2005-03-02

Family

ID=34089735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03252505A Withdrawn EP1510891A1 (de) 2003-04-17 2003-04-17 Funkuhr mit analogem Anzeiger und digitaler Projektion

Country Status (1)

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EP (1) EP1510891A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1748333A3 (de) * 2005-07-28 2008-11-05 IDT Technology Limited Projektionsuhr
RU2824322C1 (ru) * 2023-09-08 2024-08-07 Сергей Леонидович Беседин Самоустанавливающиеся электромеханические часы

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036946A1 (de) * 1980-03-22 1981-10-07 ESGE Elektrouhren GmbH Elektrische Digitaluhr
US4645357A (en) * 1984-11-09 1987-02-24 Junghans Uhren Gmbh Electroptical detector for determining the position of the time display mechanism of a timepiece
US5231612A (en) * 1991-08-29 1993-07-27 Junghans Uhren Gmbh Position detection and correction mechanism for a timepiece
WO1994023349A1 (de) * 1993-04-03 1994-10-13 Braun Aktiengesellschaft Verfahren und vorrichtung zur positionserkennung von anzeigeelementen
US6343050B1 (en) * 2000-04-06 2002-01-29 Moneray International Ltd. Analog clock driven by radio signals with automatic resetting means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036946A1 (de) * 1980-03-22 1981-10-07 ESGE Elektrouhren GmbH Elektrische Digitaluhr
US4645357A (en) * 1984-11-09 1987-02-24 Junghans Uhren Gmbh Electroptical detector for determining the position of the time display mechanism of a timepiece
US5231612A (en) * 1991-08-29 1993-07-27 Junghans Uhren Gmbh Position detection and correction mechanism for a timepiece
WO1994023349A1 (de) * 1993-04-03 1994-10-13 Braun Aktiengesellschaft Verfahren und vorrichtung zur positionserkennung von anzeigeelementen
US6343050B1 (en) * 2000-04-06 2002-01-29 Moneray International Ltd. Analog clock driven by radio signals with automatic resetting means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1748333A3 (de) * 2005-07-28 2008-11-05 IDT Technology Limited Projektionsuhr
RU2824322C1 (ru) * 2023-09-08 2024-08-07 Сергей Леонидович Беседин Самоустанавливающиеся электромеханические часы

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