EP1510891A1 - Funkuhr mit analogem Anzeiger und digitaler Projektion - Google Patents
Funkuhr mit analogem Anzeiger und digitaler Projektion Download PDFInfo
- 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- Withdrawn
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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)
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)
Country | Link |
---|---|
EP (1) | EP1510891A1 (de) |
Cited By (2)
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)
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 |
-
2003
- 2003-04-17 EP EP03252505A patent/EP1510891A1/de not_active Withdrawn
Patent Citations (5)
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)
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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