EP1213631A1 - Verfahren zum sequentielen Ansteuern einer Anzeigevorrichtung die zwei übereinander liegende Anzeigemittel umfasst - Google Patents

Verfahren zum sequentielen Ansteuern einer Anzeigevorrichtung die zwei übereinander liegende Anzeigemittel umfasst Download PDF

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Publication number
EP1213631A1
EP1213631A1 EP00204413A EP00204413A EP1213631A1 EP 1213631 A1 EP1213631 A1 EP 1213631A1 EP 00204413 A EP00204413 A EP 00204413A EP 00204413 A EP00204413 A EP 00204413A EP 1213631 A1 EP1213631 A1 EP 1213631A1
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EP
European Patent Office
Prior art keywords
display device
display
information
analog
digital
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Withdrawn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
EP00204413A
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English (en)
French (fr)
Inventor
Beat Gilomen
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.)
ETA Manufacture Horlogere Suisse SA
Original Assignee
ETA Manufacture Horlogere Suisse SA
Ebauchesfabrik ETA AG
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 ETA Manufacture Horlogere Suisse SA, Ebauchesfabrik ETA AG filed Critical ETA Manufacture Horlogere Suisse SA
Priority to EP00204413A priority Critical patent/EP1213631A1/de
Publication of EP1213631A1 publication Critical patent/EP1213631A1/de
Withdrawn legal-status Critical Current

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    • 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

Definitions

  • the present invention relates to a method for sequentially controlling a display assembly comprising two superimposed display devices, respectively upper and lower, and more particularly a method of control of a timepiece comprising a display assembly of the type aforementioned in which an analog display device is combined with a digital display device.
  • analog-digital watch comprising a combination of analog and digital display means. More specifically, this watch includes analog time display means comprising a hand of the hours and a minute hand. These hour and minute hands are arranged above a liquid crystal display cell which forms a dial for said needles. The cell has a hole located substantially in its center and crossed by a first axis on which the hour hand is fixed and by a second axis on which the minute hand is fixed.
  • a control circuit applies a signal to the terminals of the liquid crystal display cell command so that this cell displays information chosen from several types information. It can be, for example, time information such as the time, the minute and second. It can also be a date information, a timed or other time information.
  • a new type of analog-digital watch has appeared since little.
  • Such a type of watch includes a display assembly formed by a device analog display and digital display device.
  • the display device analog includes hour, minute and second hands which are move over a dial while the digital display device includes a liquid crystal cell disposed in front of the display analog that it completely covers.
  • the digital display device When the digital display device is switched to the state in which it is transparent, the information displayed by the analog display device is perfectly visible. If, on the other hand, you choose to use the display device higher, this is then switched to the state where it is opaque and reflective for completely hide the lower display.
  • the watch when no information is displayed by the display device digital, the watch has the appearance of a classic analog watch, i.e. that the hands and the dial are completely visible through the device digital display that is transparent.
  • the watch looks a purely digital watch, i.e. the hands and the dial of the device display devices are completely hidden by the display device digital and that only the information displayed by the latter is visible.
  • the object of the present invention is therefore to remedy the drawbacks above, as well as others by proposing an ordering method an analog-digital watch of the kind defined above which allows a buyer potential to distinguish at a glance such a watch from watches existing analog or digital.
  • the present invention relates to a control method sequence of a display assembly comprising two display devices superimposed, respectively upper and lower, the upper display device comprising at least one liquid crystal display cell and being arranged so as to be transparent in a first state to make the device visible lower display, and so as to display information and to be opaque and reflecting and at least partially obscuring the lower display device in a second state, control means supplying a voltage of command to switch the upper display device from the first state to the second state and vice versa, this process being characterized in that one brings in the display assembly in an operating mode in which the device upper display automatically switches to the state where it is transparent or in the state where it is opaque and reflective, so that the display assembly passes alternatively of a mode of presentation of information by the device display superior to a mode of presentation of information by the device lower display.
  • the present invention relates to a method of sequential control of a display assembly formed by a display device analog information and digital information display arranged in front of the analog display device which it covers at least partially, this process being characterized by the fact that the assembly is brought in display in an operating mode in which the display device superior automatically and alternately switches from a presentation mode analog information to a digital information presentation mode.
  • the watch when no information is displayed by the display device digital, the watch has the appearance of a classic analog watch. In however, when information is displayed by the display device digital, the watch has the appearance of a purely digital watch. Seeing automatically switch the watch from an analog aspect to a digital aspect and conversely, the potential buyer immediately sees the difference between such a shows purely analog or digital conventional watches, and can fully appreciate all the advantages that this watch brings from the point of view of the originality of its design, its innovative aesthetic appearance, its ease of use and others.
  • one activates automatically and alternately the upper display device and the device display below a frequency of the order of 0.5 Hz.
  • the present invention proceeds from the general inventive idea consisting in control the automatic passage of an analog-digital watch including a analog display device of time quantities above which is arranged a digital information display device of a presentation mode analog hourly information to a digital presentation mode and reciprocally.
  • This phenomenon of information on and off digital displays giving way, at regular time intervals, to a display analogical time information aims to attract the attention of the potential customer who passes, for example, in front of the window of a point of sale, and bring him to take an interest in the product in question by allowing it to immediately establish the distinction between this type of product and watches that are either exclusively digital, either exclusively analog, or simultaneously presenting analog and digital information.
  • the present invention will be described with reference to a timepiece such as a wristwatch. It goes without saying, however, that the invention is not limited to this application and that it could be advantageously used in the context of any other application requiring the display of information such as, for example, measuring instruments.
  • a timepiece of the wristwatch type designated as a whole by the general reference numeral 1.
  • This watch 1 conventionally comprises a box 2 provided with a bottom 4 in which are arranged an electronic clockwork movement 6 and a battery 8 which rests on the bottom 4 by means of a contact spring 10.
  • the movement 6 comprises electronic timepiece circuits associated, via a control circuit, with a driving device (not shown) of a second hand 12, a 14 minute hand and a 16 hour hand that move above a dial 18.
  • the box 2 is also closed in a conventional manner by a crystal 20 covering the entire dial 18.
  • Watch 1 further comprises a display assembly comprising two superimposed display devices respectively upper 22 and lower 24.
  • the display assembly which equips watch 1 will only be described here briefly in its main ways. For a more detailed description of this set display, advantageously refer to the reading of the patent application European No. 0 926 574 in the name of the Applicant.
  • the lower display device 24 includes means for displaying time quantities, in particular analog time display means formed by hands 12, 14, 16 and the dial 18.
  • this lower display device 24 could be formed by a any digital display device, for example of the liquid crystal type.
  • This lower display device 24 could also include a combination analog and digital display means such as the combination described in the aforementioned patent EP-B-0 078 237 in the name of the Applicant, or even a decorative element, for example an image, a figure or the like.
  • the upper display device 22 comprises a double structure formed a display cell 26 disposed above an optical valve 28, this device upper display 22 extending between the lower display device 24 and the glass 20. In the example shown, this upper display device 22 covers the entire surface of the dial 18.
  • the upper display device 22 is arranged on the one hand so that the display cell 26, arranged between the glass 20 and the optical valve 28, as well as the latter are transparent in a first switching state of the cell 26 and valve 28, so as to make visible the information displayed by the lower display device 24, namely hands 12, 14 and 16 and dial 18 in the example shown.
  • the upper display device 22 is arranged so that the display cell 26 displays information, for example of the alphanumeric type, and the optical valve 28 is opaque and at least partially masks the device lower display 24 in a second switching state.
  • the switching of the display cell 26 and of the optical valve 28 of the first state to second state and vice versa is achieved by means of control integrated into movement 6, these control means being connected to the cell 26 and to valve 28 by means of conventional connectors 30a, 30b for their supply a control voltage.
  • cell 26 is a cell liquid crystal type display.
  • the cell includes a front substrate 32 transparent, a transparent rear substrate 34, a sealing frame 36 forming spacing and closing means and delimiting with the substrates 32 and 34 a closed cavity in which is a layer of liquid crystals.
  • the faces opposite substrates 32 and 34 include transparent electrodes 38, 40, made for example of indium tin oxide.
  • the substrate front 32 carries electrodes configured in digits each formed of segments to display alphanumeric characters, while the rear substrate 34 carries an electrode extending over its entire surface.
  • the electrodes 38 and 40 are connected to connector 30a via contact pads 42 located at outside the cavity.
  • the liquid crystals between these electrodes 38, 40 When applying or removing a voltage between the electrode 40 and some of the electrodes 38, the liquid crystals between these electrodes 38, 40 alternately from an absorbent state to a transparent state or conversely, depending on the type of liquid crystal in question and / or the presence and arrangement of polarizers associated with the cell. It is thus possible to display information in clear on dark background or in dark on light background.
  • the display cell 26 is a crystal cell helical nematic type liquids whose respective exterior surfaces of the substrates 32 and 34 are provided with polarizers (not shown) with orientations cross.
  • cell 26 is completely transparent, that is to say in the first switching state, when no voltage is applied across its electrodes 38, 40 (non-switched state), and is absorbent or diffusing, i.e. in the second switching state, when a voltage is applied to the terminals of its electrodes 38, 40 (switched state).
  • cell 26 can be of another type as long as in a first switching state, cell 26 is transparent, and only in a second switching state, cell 26 is absorbent or diffusing.
  • this wristwatch 44 comprises a box 2 provided with a bottom 4 in which a movement electronic watchmaking 6 and a battery 8 take place. Battery 8 is supported on the bottom 4 by means of a contact spring 10. Movement 6 is associated with a device for driving (not shown) a second hand 12, a 14 minute hand and a 16 hour hand that move above a dial 18. The box 2 is closed in a conventional manner by a crystal 20.
  • Watch 44 further includes a display assembly comprising two superimposed display devices respectively upper 46 and lower 48.
  • the lower display device 48 comprises means for displaying temporal quantities, in particular display means time analogs formed by the hands 12, 14, 16 and the dial 18.
  • this lower display device 48 can be formed by a any digital display device, for example of the liquid crystal type.
  • This display device 48 may also include a combination of analog and digital display means such as the combination described in EP-B-0 078 237 in the name of the Applicant, or an element decorative, for example an image, a drawing, etc.
  • the display assembly which equips watch 44 will only be described here. succinctly in its main ways. For a more detailed description of this display assembly, advantageously refer to the reading of the request European Patent No. 0 939 331 in the name of the Applicant.
  • the upper display device 46 comprises a cell display 50 and extends between the lower display device 48 and the glass 20. In the example shown, this upper display device 46 covers the entire surface of the dial 18. It goes without saying that, according to an alternative embodiment, the device upper display 46 can form the crystal 20 of the watch 44.
  • the device upper display 46 is arranged so that the display cell 50 is transparent in a first switching state to make visible the information displayed by the lower display device 48, namely the hands 12, 14 and 16 and the dial 18.
  • the upper display device 46 is arranged so that the display cell 50 displays information, for example of the type alphanumeric, in a second switching state.
  • control means integrated into the movement 6, these control means being connected to the cell 50 by means of conventional connectors 30a, 30b to provide it with a control voltage.
  • the cell 50 is a liquid crystal display cell of the diffusing or reflective in the second switching state.
  • cell 50 is a crystal cell liquids of the nematic helical type (TN).
  • This cell 50 includes a substrate front 52 transparent, a rear substrate 54 transparent, and a sealing frame 56 forming spacing and closing means delimiting with the substrates 52 and 54 a cavity in which is a layer of liquid crystals.
  • the faces in look of the substrates 52 and 54 include transparent electrodes 58 and 60, made for example of indium tin oxide.
  • the substrate front 52 carries electrodes 58 configured in digits each formed of segments to display alphanumeric characters, while the rear substrate 54 carries an electrodes 60 extending over its entire surface.
  • the electrodes 58 and 60 are connected to connector 30a via contact pads 42 located at outside the cavity.
  • the cell 50 further comprises, on the side of the glass 20, a linear polarizer 62 and, on the side of the dial 18, a quarter-wave plate 64 associated with a cholesteric film 66.
  • cell 50 can be of another type as long as in a first switching state, cell 50 is transparent, and only in a second switching state, the cell 50 is opaque and reflective or diffusing.
  • a wristwatch 1 or 44 which includes a set display formed by an analog display device and a display device digital.
  • the analog display device, respectively 24 or 48 includes a second hand 12, a minute hand 14 and an hour hand 16 which move above a dial 18, while the display device digital, respectively 22 or 46, includes a crystal display cell liquids, respectively 26 or 50, arranged in front of the display device analog 24 or 48 which it completely covers.
  • the digital display device 22 or 46 When the digital display device 22 or 46 is switched to the state where it is transparent, the information displayed by the analog display device 24 or 48 are perfectly visible. If, on the other hand, we choose to use the device upper display 22 or 46, this is then switched to the state in which it is opaque and reflective to completely hide the lower display device.
  • the watch when no information is displayed by the display device digital, the watch has the appearance of a classic analog watch, i.e. that the hands 12, 14 and 16 and the dial 18 are completely visible through the digital display device 22 or 46 which is transparent.
  • the watch when information is displayed by the digital display device 22 or 46, the watch has the appearance of a purely digital watch, that is to say that the hands 12, 14 and 16 and the dial 18 of the analog display device 24 or 48 are completely hidden by the digital display device 22 or 46 and that only the information displayed by the latter is visible.
  • Watch 1, 44 described above can therefore have, as desired, a purely digital aspect or a purely analog aspect, which distinguishes it from watches that are only digital or only analog, or watches that simultaneously display analog information and digital information.
  • a method for sequentially controlling a display assembly of the kind described above comprising an upper display device, respectively 22 or 46, and a lower display device, respectively 24 or 48, method comprising the step which consists in automatically switching the upper display device into the state where it is transparent or in the state where it is opaque and reflective, so that the display assembly alternately switches from a first mode of presentation of information by the display device superior to a second presentation mode information by the lower display device.
  • the eye of the passerby will be like this attracted by this phenomenon, which should lead him to take an interest in the product question.
  • automatic switching means a process in which the watch is entered, for example by pressing a push button of said watch, in an autonomous operating mode which does not require no action external to the watch and in which the upper display device is alternately switched to a state where it is transparent or to a state where it is opaque and reflective, so that the information displayed by the device lower display appear then disappear cyclically with regard to the observer to be replaced by the information displayed by the device upper display.
  • the display assembly is formed by a display device analog 24 or 48 and a digital information display device 26, 28 or 50 arranged in front of the analog display device which it covers at least partially, we pass automatically and alternately the whole display of a mode of analog presentation of information to a mode of digital presentation of information by alternately switching the device digital information display in a state where it is transparent and where the analog information display device is perfectly visible, or in a state where it is opaque and reflective and where it displays information by hiding the analog information display device.
  • Figure 3 is a succession of top views of a wristwatch similar to those shown in Figures 1 and 2, the upper display device 22 or 46 being alternately and automatically switched to a state where it is transparent and where the time information displayed by the display device analog, respectively 24 or 48, are visible, and in a state where it displays a digital information and where it is reflective and opaque to mask the device analog display.
  • the wristwatch shown in Figure 3 is a watch of the type described in connection with FIG. 1, it comprises a double structure formed display cell 26 disposed above the light valve 28 which are all two transparencies in a first switching state, so as to make visible the information displayed by the lower display device 24, while the cell display 26 displays information and that the optical valve 28 is opaque and hides the lower display device 24 in a second switching state.
  • the wristwatch of FIG. 3 is a watch of the type described in connection with FIG. 2, it comprises a single display cell 50 which, as desired, can be transparent in a first switching state to make visible the information displayed by the lower display device 48, or display a information and be opaque and reflective in a second switching state to hide the information displayed by the lower display device 48.
  • the analog and digital display sequences follow one another in time frequency of the order of 0.5 Hz for example, according to the order materialized by an arrow in figure 3.
  • Figure 4 is a succession of top views of a wristwatch similar to those of FIG. 3 in which we see that, intermittently, the digital display device 26, 28 or 50 and the analog display device 12, 14, 16 and 18 are visible simultaneously, only half, for example, of the device digital display being electrically controlled to display information, while the other half of said digital display device remains transparent so as to make the analog display device visible underlying temporal quantities.
  • Such an operating mode can be activated by the seller before placing the timepiece in the window or by the user himself who would like to demonstrate the functionality to those around him of his watch.
  • the analog display sequences and digital follow each other in time at a frequency of the order of 0.5 Hz which is a frequency fast enough to attract the attention of the potential customer who examines the content of a store window, but also slowly enough to allow the observer to appreciate the details of the analog display and digital display.
  • FIG. 5 is a schematic representation of the electronic circuit intended to the implementation of the method according to the present invention.
  • a electronic timepiece circuit 68 mounted across a quartz oscillator 70.
  • This timepiece circuit 68 is conventionally associated, via a frequency divider circuit 72, for example to a drive device 74 of a motor 76 which supplies the energy mechanical necessary for driving the needles 12, 14 and 16 forming the device lower 24 or 48 analog display of the time quantities.
  • the circuit frequency divider 72 also provides control means 78 for upper display device 22 or 46 a signal at the frequency, for example of the order of 0.5 Hz, desired, so that these control means 78 will apply a control voltage at the same frequency of 0.5 Hz to the valve optic 28 or to the display cell 50 for passing them from one state to which they are transparent and reveal the lower display device 24 or 48, in a state in which they are opaque and reflective to mask said lower display device 24 or 48 and display information of the type alphanumeric.
EP00204413A 2000-12-11 2000-12-11 Verfahren zum sequentielen Ansteuern einer Anzeigevorrichtung die zwei übereinander liegende Anzeigemittel umfasst Withdrawn EP1213631A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00204413A EP1213631A1 (de) 2000-12-11 2000-12-11 Verfahren zum sequentielen Ansteuern einer Anzeigevorrichtung die zwei übereinander liegende Anzeigemittel umfasst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00204413A EP1213631A1 (de) 2000-12-11 2000-12-11 Verfahren zum sequentielen Ansteuern einer Anzeigevorrichtung die zwei übereinander liegende Anzeigemittel umfasst

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EP1213631A1 true EP1213631A1 (de) 2002-06-12

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020214535A1 (en) * 2019-04-17 2020-10-22 Newtonoid Technologies, L.L.C. Watch having an intelligent display system
US11967028B2 (en) 2020-04-13 2024-04-23 Newtonoid Technologies, L.L.C. Watch having an intelligent display system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539333A2 (de) * 1991-10-23 1993-04-28 Fabrique D'ebauches De Sonceboz S.A. Flüssigkristallmatrixanzeige für Uhr
US5455808A (en) * 1993-11-26 1995-10-03 Asulab S.A. Timepiece with a mobile display
EP0927917A1 (de) * 1997-07-18 1999-07-07 Citizen Watch Co. Ltd. Armbanduhr
EP0939331A2 (de) * 1998-02-27 1999-09-01 Asulab S.A. Anzeigeeinheit mit zwei aufeinander liegenden Anzeigevorrichtungen
US5995456A (en) * 1995-03-10 1999-11-30 Boit Incorporated Dynamically changing liquid crystal display timekeeping apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539333A2 (de) * 1991-10-23 1993-04-28 Fabrique D'ebauches De Sonceboz S.A. Flüssigkristallmatrixanzeige für Uhr
US5455808A (en) * 1993-11-26 1995-10-03 Asulab S.A. Timepiece with a mobile display
US5995456A (en) * 1995-03-10 1999-11-30 Boit Incorporated Dynamically changing liquid crystal display timekeeping apparatus
EP0927917A1 (de) * 1997-07-18 1999-07-07 Citizen Watch Co. Ltd. Armbanduhr
EP0939331A2 (de) * 1998-02-27 1999-09-01 Asulab S.A. Anzeigeeinheit mit zwei aufeinander liegenden Anzeigevorrichtungen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020214535A1 (en) * 2019-04-17 2020-10-22 Newtonoid Technologies, L.L.C. Watch having an intelligent display system
US20220180614A1 (en) * 2019-04-17 2022-06-09 Newtonoid Technologies, L.L.C. Watch Having an Intelligent Display System
US11967028B2 (en) 2020-04-13 2024-04-23 Newtonoid Technologies, L.L.C. Watch having an intelligent display system

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