EP0693718B1 - Montre comprenant un dispositif d'affichage associé à un dispositif optique de grossissement - Google Patents
Montre comprenant un dispositif d'affichage associé à un dispositif optique de grossissement Download PDFInfo
- Publication number
- EP0693718B1 EP0693718B1 EP95111126A EP95111126A EP0693718B1 EP 0693718 B1 EP0693718 B1 EP 0693718B1 EP 95111126 A EP95111126 A EP 95111126A EP 95111126 A EP95111126 A EP 95111126A EP 0693718 B1 EP0693718 B1 EP 0693718B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mirror
- watch
- display means
- watch according
- lens
- 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.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 title claims description 42
- 239000004973 liquid crystal related substance Substances 0.000 claims description 13
- 239000013078 crystal Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 description 18
- 239000011159 matrix material Substances 0.000 description 6
- 230000004075 alteration Effects 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 5
- 210000000245 forearm Anatomy 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 239000008710 crystal-8 Substances 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
- G04B39/008—Watch crystals; Fastening or sealing of crystals; Clock glasses with means for magnified reading
Definitions
- the present invention relates to a watch comprising an information display device and a device magnification optics of this display device for the eye of a user of this watch.
- an analog display generally formed of needles associated with one or several graduation (s), i.e. a digital display formed usually by liquid crystal cells (LCD).
- LCD liquid crystal cells
- a disc or printed ring associated with a window provided in the dial of the watch to indicate the date, the day of the week, the month or the year.
- a lens magnifying at the level of the watch glass opposite the window provided in the dial.
- the distance between the printed disc or ring and the magnifying lens is usually less than 3mm. Therefore, the focal length of the lens must be very small to allow significant magnification. For example, to obtain a magnification by a factor of 2, the focal length is less than 6 mm.
- the magnifying lens By accepting that the counter has a radius of 1 mm and the eye is approximately 15 cm from the watch glass, the magnifying lens must have about a radius of 2 mm, corresponding to the radius of the virtual image formed by this magnifying lens, so that the date can be read as a whole by a watch user.
- Document US 3,650,599 describes a device for measurement with an optical system of magnification of the end of an analog indicator and clues of the dial located near this end. It is provided here a system of referral by two oriented mirrors obliquely at 45 ° relative to the plane of the dial requiring a significant distance between the dial and the device glass. This leads to an object presenting a relatively high overall height.
- One of the mirrors oblique is arranged in the central part so attached to the analog indicator.
- the document CH 368 756 describes a device for magnification of a date appearing in a window of the dial of a timepiece. This device magnification is formed by a machined lens directly in the glass of the timepiece.
- the document CH 346 178 proposes to integrate a lens flat diffracting at the watch glass for magnify information on the dial of this watch.
- the present invention proposes to solve this problem in providing a watch including means information display, likely to have a strong information density, associated with an optical device magnification arranged in the watch so as to allow sufficient magnification of these means display to ensure easy reading of these information.
- a ten-line text with line length corresponding to about fifteen characters can be displayed by a matrix device having 100 x 100 pixels.
- pixel we understand a localized and substantially uniform information, in particular an emission of light by a cell, for example a light-emitting diode or an integrated micro-laser.
- the above-mentioned matrix device has an area of approximately 4 cm 2 to ensure easy reading. It will be noted that a direct display of 4 cm 2 occupies approximately the whole of a dial of a wristwatch sized for a man's arm. This considerably limits the possibilities of arrangement of this dial.
- the present invention also aims to provide a watch capable of having a matrix display of approximately 100 ⁇ 100 pixels which can be read correctly by a user of the watch while having a surface, provided on the dial of this watch for the reading of this matrix display, less than 4 cm 2 , for example from 1 to 2 cm 2 .
- the subject of the present invention is a watch comprising a housing, first display means, a first mirror and optical magnification means arranged to magnify optically, for a user of this watch, said display means, said first mirror being arranged inside said housing for returning towards said optical means of magnification of the light coming from said first display means also arranged inside said display housing, characterized in that said first mirror is arranged in the region of the bottom of the case.
- the means magnification optics include a first magnifying lens arranged under the watch glass.
- the length of the optical path between the means display and this first lens can without other be greater than the thickness of the watch and the height between the bottom of the case and the watch glass is used by the arrangement of the various optical elements planned.
- Watch 1 includes a timepiece movement 2 arranged in a box 4.
- the box 4 includes a bottom 6 and a ice 8.
- the watch movement 2 is associated with a analog time display including a hand hour 10 and a minute hand 12.
- a micro-shutter display device 14 Inside box 4 are arranged a micro-shutter display device 14, a light source 16, a mirror 18 and a magnifying lens 20.
- the light source 16 is capable of sending the light towards the micro-flap display device 14.
- the latter is arranged so as to return the light from the light source 16 towards mirror 18, which is arranged so as to return the light coming from the device 14 towards the magnifying lens 20.
- the light thus coming from the micro-flap display device 14 comes out of the magnifying lens 20.
- the light thus coming from the micro-flap display device 14 comes out of the box 4 crossing the glass 8.
- Inside the box 4 also included are internal parts 22 and 24 used to essentially prevent that the light provided by the light source 16 come directly out of the box 4 by the magnifying lens 20 without having been reflected by the micro-flap display device 14 and the mirror 18.
- the light source 16 can be either a monochromatic light source or a polychromatic light source.
- the mirror 18 is either a spherical mirror or an aspherical mirror used to correct optical aberrations of the lens magnifying 20.
- An aspherical mirror is optically more advantageous than a spherical mirror since it allows essentially eliminate optical aberrations specific to spherical optical elements.
- a plane mirror is provided.
- the lens magnifying 20 is a conventional lens having a certain focal length.
- the focal length of the lens 20 is 20 mm and the optical distance separating the micro-flap display device 14 and this magnifying lens 20 is 15 mm.
- the magnifying lens 20 forms a virtual image of the micro-flap display device 14 approximately corresponding to a magnification of a factor four for the eye of a user located substantially a distance of 20 cm from said virtual image relative to the case of a liquid crystal display of a known type also located 20 cm from the eye of a user.
- the arrangement of the various optical elements 14, 18 and 20 provides a relatively high magnification of a display device using a lens magnifier with a focal length greater than 10 cm. From this done, the micro-flap display device 14 can give information with high surface density which does not could be read directly by an eye with a normal visual acuity without requiring effort intense accommodation.
- the magnifying lens 20 is a spherical lens.
- the magnifying lens 20 is a cylindrical lens allowing a magnification of the display device to micro-flaps 14 according to a single dimension.
- the mirror 18 also has symmetry cylindrical.
- watch 1 includes a first dial 26 having on its surface a graduation 28 for the time indication.
- watch 1 includes a second dial 30 located against or near the glass 8 of this ice 8 and used in particular for the arrangement of the device 14 and the magnifying lens 20.
- the magnifying lens 20 is glued against the inner surface of the ice 8.
- the magnifying lens 20 is directly formed in the ice 8.
- the mirror 18 arranged on the bottom side 6 of the box 4 and the micro-flap display device 14 arranged from side of the glass 8 of the watch 1 allow to increase the optical distance separating the display device 14 and the magnifying lens 20. Therefore, it is relatively high magnification possible with a magnifying lens having a relatively focal length large, which reduces the size of the magnifying lens and decrease aberrations optics generated by this magnifying lens.
- the aforementioned optical arrangement allows to use a magnifying lens 20 having dimensions sufficient to guarantee correct and easy reading of the micro-flap display device 14 magnified by this magnifying lens 20.
- the first mode of realization of the invention described above does not solve optimal congestion issues generated by conventional optical elements 18 and 20 and the question of the optical quality of the virtual image of the micro-flap display device 14 formed by the magnifying lens 20.
- the congestion problem is still increased.
- the present invention also aims to solve the problem of congestion caused by various conventional optical elements of the first mode of realization described above and to increase the quality of the magnified image of the display device.
- Watch 31 including a clockwork movement 32 associated to a liquid crystal display device 34 located under watch glass 8.
- Watch 31 also includes a case formed by a middle part 4 and a bottom 6.
- a the interior of the middle part 4 is arranged a device active display 36.
- active display device includes an optical device comprising a set of elementary cells capable of providing light. By an appropriate command of all of these cells elementary it is possible to form on the surface of this active display device an image containing a certain information.
- a diffracting lens plate 38 and a flat diffracting mirror 40 is arranged in the back 6 of watch 31.
- diffracting mirror it is including a diffracting optical element used in reflection.
- the mirror 40 is arranged so as to returning light from the display active 36 towards lens 38. It will be noted here that the light sent by the active display device 36 is substantially monochromatic.
- the active display device 36 is formed by a set of light emitting diodes or by a set of integrated micro-lasers.
- the manufacture of the diffracting mirror 40 and of the lens diffractante 38 are known to those skilled in the art.
- the mirror 40 and lens 38 can be micro-machined from so as to essentially eliminate any aberration optical.
- the micromachining profile of the surface 42 of the mirror 40 and the surface 44 of the lens 38 can be programmed using known optical design algorithms of the skilled person.
- the optical arrangement according to this second embodiment of the invention also makes it possible to obtain relatively large magnifications of the active surface 46. Consequently, the density of information formed on this active surface 46 can be relatively high, which makes it possible, for a certain number of given pieces of information, to considerably reduce the dimensions of the active surface 46.
- the active surface 46 is defined by a 25 mm 2 square inside which is arranged a matrix of pixels used for the formation of the design defining information for the user of the watch 31.
- magnification is without other possible with the optical arrangement according to the invention.
- a virtual image formed by the lens 38 corresponding to a magnification by a factor of four of the active surface 46 is virtually located at an optical distance of lens 38 of about 6 cm. Therefore, it is possible to provide that the surface of the lens 38 is less than the surface of the virtual image.
- a magnification by a factor of four corresponds approximately to a virtual image of 4 cm 2 for an active surface 46 having 25 mm 2 .
- the drawing formed on the active surface 46 is compressed only according to the small dimension of the rectangular active surface 46.
- the virtual image received by the eye of a user has dimensions suitable for writing a text in particular.
- the active surface 46 has a width of 5 mm and a length of 2 cm while the surface 44 of the magnifying lens 38 at a width of 1 cm and a length of 2 cm.
- the factor magnification of the magnified dimension has a value between two and five.
- the flat mirror 40 can be arranged obliquely relative to the bottom 6 of the watch 31 so as to return light from the display active 36 towards the magnifying lens 38 under a direction substantially perpendicular to the glass 8.
- Watch 51 includes a crystal 8, a middle part 4 and a case back 6. This watch 51 is equipped with a movement watchmaker 2 associated with an analog display comprising an hour hand 10 and a minute hand 12 arranged between the glass 8 and a dial 52.
- watch 51 includes a active display device 36 capable of sending the light towards a first flat mirror 40. This last returns the light coming from the device 36 in direction of a flat diffracting lens 54 located at level of the dial 52 and arranged between the mirror 40 and the flat diffracting lens 38 located at the level of the ice 8.
- the lens 54 can, together with the lens 38, participate in the enlargement of the active surface 46 of the device 36.
- the lens 54 essentially serves to increase the optical quality of the virtual image of the active surface 46 of the device 36.
- the lens 54 is arranged so that the light from mirror 40 is diffracted in one direction slightly angularly offset relative to the direction of light between mirror 40 and lens 54.
- the diffracting lens 38 is arranged to way to change the direction of propagation of the light passing through it so that the offset angular between the direction of the outgoing light out of watch 51 and the direction perpendicular to the glass 8 and is significantly less than the angular offset between this direction and the direction of light returned by the mirror 40.
- the lens 54 can be glued below or above the dial 52. Then, in a variant of embodiment, the lens 54 can be directly machined in the dial 52. Likewise, the magnifying lens 38 can be either glued under the glass 8, or directly machined in this glass 8 to form with it a single and even room.
- the mirror 40 is made up, in an alternative embodiment, with a simple plane mirror classic. Again, the mirror 40 can be arranged to inclined relative to the bottom 6 of the watch 51.
- the various optical elements are arranged in each of the embodiments so as to define the optimal optical path 56 for the light coming from the display device provided in the watch according to the invention.
- the use of flat lenses and flat mirrors reduce the overall dimensions of the arrangement optics of the invention and increases the number of degrees of freedom for the arrangement of the various optical elements constituting the optical arrangement according to the invention.
- the flat mirror 40 can be a mirror diffractant participating in the magnification function of the active surface 40 of the active display device 36 and / or to return the light at an angle other than the angle of refraction.
- Watch 61 includes a crystal 8, a middle part 4 and a case back 6. It is equipped with a watch movement 32 associated with a liquid crystal display 64.
- watch 61 comprises at inside the housing 4 an active display device 36 likely to send light towards a first mirror 66, which returns this light in direction of a second mirror 68 which in turn returns this light towards a flat diffracting mirror 40. Finally, this mirror 40 returns the light coming from of device 36 towards a diffracting lens plate 38, arranged below the display device to liquid crystal 64 relative to ice 8.
- the first mirror 66 and the flat diffracting mirror 40 are both arranged in the bottom 6, while the second mirror 68 is arranged directly below the liquid crystal display device 64.
- Light supplied by the active display device 36 thus follows a zigzag optical path before crossing the lens magnifying 38 and then out of the box shows 61.
- Mirrors 66 and 68 can either be formed of classic refracting mirrors, or mirrors diffracting. Such an optical arrangement makes it possible to increase considerably the optical distance between the device active display 36 and magnifying lens 38. From more, the optical arrangement described in this mode of achievement increases the number of degrees of freedom in the arrangement of each of the optical elements 66, 68, 40 and 38 thus optimizing the transmission of the light from device 36 to form an image virtual image of the active surface 46 of the device display 36.
- the liquid crystal display device 64 is chosen in such a way that it is transparent for the wavelength of the light coming from the device 36, which sends a substantially monochromatic light. Of this fact, it is possible to superimpose a first drawing supplied by the liquid crystal display device 64 and a second drawing provided by the device active display 36. In an alternative embodiment, the device 64 is transparent to light from device 36 when the device 64 is not activated.
- mirrors 40, 66 and 68 can be arranged from inclined relative to the bottom 6 and the glass 8, which are substantially parallel to each other.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
- Electric Clocks (AREA)
Description
- la figure 1 représente une coupe schématique d'une montre selon un premier mode de réalisation de l'invention;
- la figure 2 représente une vue schématique de dessus de la montre représentée à la figure 1;
- la figure 3 est une vue schématique en coupe d'une montre selon un deuxième mode de réalisation de l'invention;
- la figure 4 est une vue schématique en coupe d'une montre selon un troisième mode de réalisation de l'invention;
- la figure 5 est une vue schématique en coupe d'une montre selon un quatrième mode de réalisation de l'invention.
Claims (14)
- Montre comprenant un boítier (4,6), des premiers moyens d'affichage (14;36), un premier miroir (40) et des moyens optiques de grossissement (38;54) agencés de manière à grossir optiquement, pour un utilisateur de cette montre, lesdits moyens d'affichage, ledit premier miroir (40) étant agencé à l'intérieur dudit boítier pour renvoyer en direction desdits moyens optiques de grossissement de la lumière provenant desdits premiers moyens d'affichage agencés également à l'intérieur dudit boítier, caractérisée en ce que ledit premier miroir (40) est agencé dans la région du fond (6) du boítier.
- Montre selon la revendication 1, caractérisée en ce que ledit premier miroir (40) est agencé de manière sensiblement parallèle au fond (6).
- Montre selon la revendication 1 ou 2, caractérisée en ce que ledit premier miroir (40) est un miroir asphérique.
- Montre selon la revendication 1 ou 2, caractérisée en ce que ledit premier miroir (40) est un élément optique diffractant utilisé en réflexion.
- Montre selon l'une des revendications précédentes, caractérisée en ce que lesdits moyens optiques de grossissement comprennent une lentille diffractante plate (38).
- Montre selon l'une quelconque des revendications 1 à 4 comprenant un cadran (52), caractérisée en ce que lesdits moyens optiques de grossissement (38,54) comprennent une première lentille (38) agencée au niveau de la glace (8) et une deuxième lentille (54) agencée au niveau dudit cadran, lesdites première et deuxième lentilles étant disposées de manière à grossir optiquement des informations fournies par lesdits premiers moyens d'affichage (36).
- Montre selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend au moins un deuxième miroir (68) agencé en regard dudit fond (6) dudit boítier pour renvoyer en direction dudit premier miroir (40) ladite lumière provenant desdits premiers moyens d'affichage (36).
- Montre selon la revendication 7, caractérisée en ce que le deuxième miroir (68) est agencé de manière sensiblement parallèle au fond (6).
- Montre selon l'une quelconque des revendications précédentes, caractérisée en ce que lesdits premiers moyens d'affichage (14) sont formés par un dispositif à micro-volets, ce dispositif à micro-volets étant éclairé au moyen d'une source lumineuse (16) agencée à l'intérieur du boítier (4,6) de ladite montre.
- Montre selon l'une quelconque des revendications 1 à 8, caractérisée en ce que lesdits premiers moyens d'affichage (36) sont formés par un dispositif d'affichage actif (36) à forte densité d'informations.
- Montre selon la revendication 10, caractérisée en ce que ledit dispositif d'affichage actif (36) est formé par un ensemble de cellules élémentaires susceptibles de fournir chacune un signal lumineux définissant un point élémentaire d'information.
- Montre selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend en outre des deuxièmes moyens d'affichage permettant l'affichage d'informations différentes et indépendantes des premiers moyens d'affichage.
- Montre selon la revendication 12, caractérisée en ce que lesdits deuxièmes moyens d'affichage sont formés par un dispositif d'affichage à cristaux liquides (64) superposés au moins partiellement auxdits moyens optiques de grossissement (38), ledit dispositif d'affichage à cristaux liquides étant essentiellement transparent pour la lumière provenant desdits premiers moyens d'affichage (36) lorsque ledit dispositif d'affichage à cristaux liquides n'est pas activé.
- Montre selon la revendication 13, caractérisée en ce que ledit dispositif d'affichage à cristaux liquides (64) est également au moins partiellement transparent pour la lumière provenant desdits premiers moyens d'affichage lorsque ledit dispositif d'affichage à cristaux liquides est activé.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2309/94 | 1994-07-21 | ||
CH02309/94A CH687495B5 (fr) | 1994-07-21 | 1994-07-21 | Montre comprenant un dispositif d'affichage associé à un dispositif optique de grossissement. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0693718A1 EP0693718A1 (fr) | 1996-01-24 |
EP0693718B1 true EP0693718B1 (fr) | 1999-01-20 |
Family
ID=4230794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95111126A Expired - Lifetime EP0693718B1 (fr) | 1994-07-21 | 1995-07-15 | Montre comprenant un dispositif d'affichage associé à un dispositif optique de grossissement |
Country Status (9)
Country | Link |
---|---|
US (1) | US5566137A (fr) |
EP (1) | EP0693718B1 (fr) |
JP (1) | JP3583511B2 (fr) |
KR (1) | KR100371740B1 (fr) |
CN (1) | CN1050678C (fr) |
CH (1) | CH687495B5 (fr) |
DE (1) | DE69507393T2 (fr) |
HK (1) | HK1012081A1 (fr) |
TW (1) | TW314608B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007001292A1 (fr) * | 2005-06-24 | 2007-01-04 | Hideki Electronics, Inc. (Usa) | Horloge commandee par radio avec projection numerique a distance de l'heure |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL129455A (en) | 1999-04-15 | 2003-07-06 | Mvt Multi Vision Technologies | Timepieces |
US6330208B1 (en) | 1998-10-16 | 2001-12-11 | Xonix Watch Co., Ltd. | Watch with front mounted liquid crystal display and liquid crystal display with reflective sheet |
US7083326B2 (en) * | 2004-09-13 | 2006-08-01 | Ast Ryan C | Adjustable watch crystal apparatus |
EP1862873A1 (fr) * | 2006-06-02 | 2007-12-05 | Montres Rado S.A. | Dispositif d'affichage pour un instrument portable, tel qu'une montre |
TR201103182A2 (tr) * | 2011-04-01 | 2011-09-21 | Evren Yildirim Cuma | Ayna yansımalı saat kadranı. |
US20140269218A1 (en) * | 2013-03-15 | 2014-09-18 | Jeffrey Herold | Watch Engaged ATIS Reminder Systems |
EP3032357B1 (fr) * | 2014-12-09 | 2017-05-03 | The Swatch Group Research and Development Ltd. | Dispositif d'affichage pour un objet portable tel qu'une pièce d'horlogerie |
EP3062172B1 (fr) | 2015-02-24 | 2017-11-15 | The Swatch Group Research and Development Ltd. | Montre équipée d'une loupe |
US10564607B2 (en) * | 2016-12-12 | 2020-02-18 | Dayton Technologies Limited | Apparatus comprising an electroluminescent display |
CH713623A1 (fr) | 2017-03-27 | 2018-09-28 | Fgp Capital Sa | Dispositif de lecture d'un appareil à glace ou écran. |
EP3575888B1 (fr) * | 2018-05-30 | 2023-04-12 | Rolex Sa | Piece d'horlogerie comportant une lentille asphérique |
JP7323139B2 (ja) * | 2018-08-08 | 2023-08-08 | バレンシア大学 | プレノプティック接眼装置 |
US12025956B2 (en) | 2021-06-29 | 2024-07-02 | Bootstrap Brands, Inc. | Apparatus for wrist-worn devices |
WO2023214245A1 (fr) | 2022-05-05 | 2023-11-09 | John Paul Leimone | Pièce d'horlogerie à conception amplificatrice de lumière |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH346178A (fr) * | 1958-04-18 | 1960-04-30 | Kyburz & Cie | Verre pour couvrir le cadran d'un instrument indicateur |
CH81360A4 (fr) * | 1960-01-25 | 1962-12-29 | ||
US3650599A (en) * | 1971-01-28 | 1972-03-21 | Carl Pedersen | Measuring instrument and reading device assembly |
US4451117A (en) * | 1983-11-04 | 1984-05-29 | Goode Robert C | Digital watch magnifying element |
-
1994
- 1994-07-21 CH CH02309/94A patent/CH687495B5/fr not_active IP Right Cessation
-
1995
- 1995-07-13 KR KR1019950020538A patent/KR100371740B1/ko not_active IP Right Cessation
- 1995-07-13 TW TW084107259A patent/TW314608B/zh active
- 1995-07-15 DE DE69507393T patent/DE69507393T2/de not_active Expired - Lifetime
- 1995-07-15 EP EP95111126A patent/EP0693718B1/fr not_active Expired - Lifetime
- 1995-07-17 US US08/503,030 patent/US5566137A/en not_active Expired - Lifetime
- 1995-07-20 JP JP18393295A patent/JP3583511B2/ja not_active Expired - Fee Related
- 1995-07-20 CN CN95109252.9A patent/CN1050678C/zh not_active Expired - Fee Related
-
1998
- 1998-12-14 HK HK98113293A patent/HK1012081A1/xx not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007001292A1 (fr) * | 2005-06-24 | 2007-01-04 | Hideki Electronics, Inc. (Usa) | Horloge commandee par radio avec projection numerique a distance de l'heure |
Also Published As
Publication number | Publication date |
---|---|
US5566137A (en) | 1996-10-15 |
DE69507393T2 (de) | 1999-09-02 |
JP3583511B2 (ja) | 2004-11-04 |
CH687495GA3 (fr) | 1996-12-31 |
CN1118459A (zh) | 1996-03-13 |
DE69507393D1 (de) | 1999-03-04 |
KR100371740B1 (ko) | 2003-03-19 |
CH687495B5 (fr) | 1997-06-30 |
TW314608B (fr) | 1997-09-01 |
EP0693718A1 (fr) | 1996-01-24 |
JPH0862349A (ja) | 1996-03-08 |
CN1050678C (zh) | 2000-03-22 |
HK1012081A1 (en) | 1999-07-23 |
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