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WO1999046752A1 - Dispositif pour l'affichage de caracteres alphanumeriques et/ou de symboles graphiques - Google Patents

Dispositif pour l'affichage de caracteres alphanumeriques et/ou de symboles graphiques Download PDF

Info

Publication number
WO1999046752A1
WO1999046752A1 PCT/EP1999/001532 EP9901532W WO9946752A1 WO 1999046752 A1 WO1999046752 A1 WO 1999046752A1 EP 9901532 W EP9901532 W EP 9901532W WO 9946752 A1 WO9946752 A1 WO 9946752A1
Authority
WO
WIPO (PCT)
Prior art keywords
infrared
housing
receiving device
infrared receiving
side surfaces
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.)
Ceased
Application number
PCT/EP1999/001532
Other languages
German (de)
English (en)
Inventor
Karl Heinz Ronkholz
Uwe Weimann
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.)
Lumino Licht Elektronik GmbH
Original Assignee
Lumino Licht Elektronik GmbH
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 Lumino Licht Elektronik GmbH filed Critical Lumino Licht Elektronik GmbH
Priority to AU31445/99A priority Critical patent/AU3144599A/en
Publication of WO1999046752A1 publication Critical patent/WO1999046752A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134327—Segmented, e.g. alpha numeric display
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/005—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes forming an image using a quickly moving array of imaging elements, causing the human eye to perceive an image which has a larger resolution than the array, e.g. an image on a cylinder formed by a rotating line of LEDs parallel to the axis of rotation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/388—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume
    • H04N13/393—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume the volume being generated by a moving, e.g. vibrating or rotating, surface

Definitions

  • the present invention relates to a device for displaying alpha-numeric characters and / or symbols according to the preamble of claim 1, and an infrared receiving device according to the preamble of claim 9, in particular for use in a first-mentioned display device.
  • Devices for displaying alpha-numeric characters and / or pictorial characters have been widely described in the literature and have also been used in practice. Such devices are, for example, displays of different sizes with light-emitting diodes (LEDs) arranged in rows and columns.
  • LEDs light-emitting diodes
  • a display device of this type is disclosed, for example, in the international patent application PCT / RO95 / 00013.
  • a row of LEDs or LED groups is arranged in a vertically aligned support on a correspondingly designed carrier, which rotates at a constant rotational speed of more than 1,200 rpm around the vertical axis of a drive motor.
  • the block diagram of the device contains i.a. a sequence generator for generating the code sequences for the character and image sequences and a synchronization circuit for detecting the exact angular position of the rotating LED carrier, from which the actual rotational speed of the LED carrier is determined and regulated.
  • the rotating LED arrangement is located inside a rotationally symmetrical housing made of acrylic glass or the like translucent material.
  • a standing image or a standing or a legible drawing and / or image sequence moving or moving in the manner of a scrolling text is projected onto the housing surface, which can be recognized by the viewer from an angular range of more than 270 °.
  • the correct control of the LEDs in particular in relation to the rotational speed of the LED arrangement, is of crucial importance.
  • a display device of the generic type in which the circuit board with the control circuit for the LEDs is arranged in the housing and also rotates with the carrier of the LEDs .
  • the data transmission to the circuit board is also described by means of an infrared interface, the infrared receiver of the device being mounted on a rotating component, such as on the carrier or on the circuit board is.
  • the problem with this type of data transmission is that the data must be transmitted from a fixed infrared transmitter to a rotating system. Since the infrared transmission is a directional transmission, the known assembly of the rotating infrared receiver can in principle receive data from any direction, but only in a certain time and place window. This creates an extremely sensitive system, since the transmission range depends, for example, on the speed of the carrier, which is generally subject to fluctuations.
  • the inventive design of the infrared receiving device such that infrared rays can be received from any direction from an infrared transmitter, the reception of data is not only possible in certain time and location windows, but at any time and thus independently of, for example Fluctuations in the speed of the carrier.
  • the infrared receiving device has an infrared sensor in a preferably rotationally symmetrical housing made of infrared-transmissive material, the housing deflecting infrared rays from any direction towards the infrared sensor.
  • the housing of the infrared receiver it has proven to be particularly advantageous to design the housing of the infrared receiver to be cylindrical and to arrange the infrared sensor on the lower end of the cylinder and to provide an essentially conical, funnel-shaped or similar indent on the upper end of the cylinder, the side surfaces of which are straight or run curved and deflect the infrared rays onto the infrared sensor.
  • the housing is preferably made of polymethyl methacrylate (PMMA), which is particularly suitable for this purpose due to its low weight as well as its optical properties and good machinability.
  • PMMA polymethyl methacrylate
  • the physical law of total reflection is preferably used in order to deflect the infrared rays onto the infrared sensor on the lower end face of the housing.
  • FIG. 1 shows the principle of the display device in section along the axis of rotation of the arrangement; and FIG. 2 shows an infrared receiver device according to the invention in an enlarged illustration, as is used in the display device according to FIG. 1.
  • FIG. 1 shows a preferred exemplary embodiment of the LED display device 11 according to the invention in section along the axis of rotation 21 of the arrangement.
  • An electric motor 2 which is designed for a suitable motor speed, for example from approximately 1,000 to 3,000 rpm, preferably approximately 2,000 to 3,000 rpm, is mounted on a base, stand or similar set-up or support device 1.
  • a synchronous motor is usually used as the electric motor 2.
  • other drive motors can also be used, provided they are suitable for the intended purpose.
  • a coupling piece 3 is fastened on the drive shaft 20 of the electric motor 2 for coupling a circuit board 4 to the electric motor 2 for the intended torque.
  • the circuit board 4 is mounted, which is oriented at an angle of approximately 90 ° to the axis of rotation 21 of the drive shaft 20.
  • the circuit board 4 contains the complete electronic circuits for the control of the display device 11.
  • LEDs light emitting diodes
  • LED groups 6 via regulated constant current sources, non-volatile storage of the alpha-numeric characters and / or symbols , a character generator for converting the character and / or image sequence into the corresponding LED control and an infrared receiving device 30 for receiving data by means of infrared transmission from a computer 28 with infrared control 27 or from an infrared remote control 29.
  • the electronic circuit board 4 also serves as a mechanical holder for a preferably at a right angle to the circuit board 4, i.e. Carrier 5 arranged approximately parallel to the axis of rotation 21. At least one preferably vertical row from the radially outward, i.e. attached to the drive shaft 20 or axis of rotation 21 aligned LED's or LED groups 6 substantially.
  • the LEDs 6 on the carrier 5 are colored light-emitting diodes in a predeterminable color and color sequence. Both light-emitting diodes in constantly changing colors and light-emitting diodes of the same color can be used. The choice of color essentially depends on the planned advertisement. Furthermore, the application is of course not limited to the one row of sixteen LEDs 6 used in this exemplary embodiment. The row can have more or fewer LEDs 6, in particular depending on the application. 5
  • a flexible (elastically flexible) spring steel rod 7 or a rod made of another material with comparable properties is attached, for example, the elastic deformability being an essential material property.
  • a weight 8 which can be moved in a particularly advantageous manner on the spring steel rod in the longitudinal direction. This enables an optimal weight balance that is adapted to the structural and operating conditions.
  • the spring steel rod 7 or the equivalent rod element orients itself due to the increasing centrifugal force to the horizontal or almost horizontal position or a position seen in the extension of the circuit board 4 and thus forms in the operating state stabilization and weight compensation of the device.
  • the counterweight 8 attached to the end of the spring steel rod 7 compensates for the weight of the LED arrangement 5, 6 used.
  • the entire display device 11 thereby achieves a secure stand without requiring additional attachments on a base.
  • the entire arrangement described above with its components is usually mounted in a closed housing 31.
  • the housing 31 is essentially a spherical, cylindrical or otherwise rotationally symmetrical housing.
  • the spherical body 31 consists of a translucent material, for example acrylic glass, plastic, glass or the like.
  • a preferably used spherical body 31 has a diameter of approximately 30 cm and, in contrast, has a substantially smaller receiving opening through which the arrangement described above is introduced into the housing 31.
  • the housing 31 is supported by the base or base 1 on which the electric motor 2 is mounted.
  • the electric motor 2 is connected to the power supply via a supply cable 10, as a result of which the electric motor 2 is supplied with the necessary electrical energy when the system is switched on.
  • the induction law is advantageously used for the contactless and thus wear-free transmission of electrical energy to the circuit board 4.
  • the contactless energy transfer can be implemented in various ways and is described in various exemplary embodiments in an older, as yet unpublished patent application by the applicant (application number DE 197 02 751.2).
  • a rotor is provided with at least one coil winding, the coil or winding ends of which are firmly connected electrically to the circuit board or electrical or electronic components.
  • a stator formed from half shells is arranged around this rotor. Due to the rotation of the rotor together with the drive shaft, a current is generated in the coil through the outer magnetic half-shells, which current is delivered to the rotating electronic assembly (circuit board).
  • the stator or the half-shells of the stator are preferably designed as permanent magnets. It is also advantageous to provide the rotor with six coil packets, the coil axes of which are oriented radially, in order to achieve a three-phase system which is more favorable for efficiency and AC voltage smoothing.
  • the controller on the circuit board 4 ensures, in accordance with a stored specification (program, computer program), that the desired LEDs 6 light up in a predetermined time.
  • a stored specification program, computer program
  • the font bold, italic, etc.
  • the running speed of the characters and / or Image sequence is fixed, and the user can only select and enter a desired character and / or image sequence.
  • the font, the running speed or other parameters of the character and / or image sequence to be displayed can of course also be freely selected by the user.
  • an infrared receiving device 30 is provided on the circuit board 4 according to the invention, which can receive the data from an infrared remote control 29 or from an infrared interface 27 connected to a computer 28.
  • the frequency range of the data transmission with remote control 29 is in principle not limited to the infrared range, but is suitable for use with commercially available remote controls.
  • the infrared receiving device 30 is arranged in the axis of rotation 21 of the device 11. While this is for the 7
  • the remote control 29 in contrast to the computer 28, generally does not have a screen or other display elements to check the entered data, in the case of data transmission by means of the remote control 29, the display device 11 with its LEDs 6 itself functions as a display for checking the data input.
  • the infrared receiving device 30 So that data can be received at any time from the infrared receiving device 30, which rotates with the speed of the carrier 5, regardless of, for example, fluctuations in the speed, the infrared receiving device 30 according to FIG. 2 is constructed such that infrared rays 12 can be received from any direction.
  • the infrared receiving device 30 essentially consists of an infrared-permeable housing 13 and an infrared sensor 14. Because of its favorable optical and mechanical properties, as well as its diverse processing options, polymethyl methacrylate (PMMA) has proven to be a particularly suitable material for the housing 13.
  • PMMA polymethyl methacrylate
  • the rotationally symmetrical housing 13 is preferably cylindrical, with the infrared sensor 14 attached to its lower end face, preferably glued into a corresponding recess.
  • the adhesive layer 15 must of course also be infrared-transmissive as the housing 13; epoxy resin-based adhesives, for example, are therefore suitable as adhesives.
  • a substantially conical, funnel-shaped or the like indentation 16 is introduced, the side surfaces 17 of which are rectilinear or curved and deflect or reflect the incident infrared rays 12 onto the infrared sensor 14, as is the case with this is shown in Figure 2.
  • a curvature of the side surfaces 17 is advantageous since the incident infrared rays 12 can then be reflected onto the infrared sensor 14 regardless of their point of incidence on the side surfaces 17.
  • the cylinder 13 of the infrared receiving device 30 has a height of approximately 15 mm and a diameter of approximately 15 mm, the infrared sensor 14 having a diameter of approximately 10 mm and a height of approximately 7-9 mm .
  • the depth of the conical indentation 16 is approximately 3-5 mm, its side surfaces 17 are slightly curved and at every point at an angle of approximately 50-80 ° to the height direction of the cylinder 13.
  • FIG. 2 shows an example of the beam path of an infrared beam 12 striking the infrared receiver 30 from the left.
  • the infrared beam 12 strikes the side wall 18 of the cylinder 13 at an angle ⁇ to the horizontal.
  • the incident infrared beam 12 is refracted towards the horizontal by the denser medium and initially runs in the cylinder 13 at an angle ⁇ to the horizontal.
  • the infrared beam 12 then strikes the oblique side surface 17 of the feeder 16 at an angle of ⁇ to the perpendicular.
  • total reflection of the infrared beam 12 onto the infrared sensor 14 is achieved if the infrared beam hits the side wall 18 of the cylinder 13 at an angle of ⁇ ⁇ 15 °.
  • the infrared beam 12 is in the PMMA housing 13 at an angle of ⁇ ⁇ 10 ° and strikes the side surface 17 of the conical indentation 16 at an angle of ⁇ > ⁇ T.
  • a "standing" picture with a frame rate of around 50 Hz is generated for the viewer of the display device.
  • This picture can represent a standing or Moving typeface from alpha-numeric characters or an image, of course, combinations of such characters and images are also possible.
  • the LED heads 6 can be beveled, the beveling preferably taking place on the vertical.
  • SMD LEDs 6 can also be used.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Multimedia (AREA)
  • Geometry (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Toys (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne un dispositif d'affichage de forme sphérique, comportant une plaque à circuits imprimés (4) introduite à l'intérieur d'un boîtier (31) sphérique, pourvue d'éléments d'entraînement et de commande et de composants électroniques, ainsi qu'un support (5) tournant à l'intérieur du boîtier (31), comportant des diodes électroluminescentes ou des groupes de diodes électroluminescentes (6). Le transfert de données à la plaque à circuit imprimé (4) se fait au moyen de rayons infrarouges (12), le dispositif de réception de rayons infrarouges (30) étant conçu de telle sorte que les rayons infrarouges (12) émis dans chaque direction par un émetteur de rayons infrarouges (27) peuvent être reçus.
PCT/EP1999/001532 1998-03-12 1999-03-10 Dispositif pour l'affichage de caracteres alphanumeriques et/ou de symboles graphiques Ceased WO1999046752A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31445/99A AU3144599A (en) 1998-03-12 1999-03-10 Device for displaying alphanumeric characters and/or graphic symbols

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19810683A DE19810683A1 (de) 1998-03-12 1998-03-12 Vorrichtung zur Anzeige von alpha-numerischen Zeichen und/oder Bildzeichen
DE19810683.1 1998-03-12

Publications (1)

Publication Number Publication Date
WO1999046752A1 true WO1999046752A1 (fr) 1999-09-16

Family

ID=7860599

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/001532 Ceased WO1999046752A1 (fr) 1998-03-12 1999-03-10 Dispositif pour l'affichage de caracteres alphanumeriques et/ou de symboles graphiques

Country Status (3)

Country Link
AU (1) AU3144599A (fr)
DE (1) DE19810683A1 (fr)
WO (1) WO1999046752A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10114674A1 (de) * 2001-03-23 2002-10-17 Trend Network Ag Vorrichtung zur Anzeige von Bildinformationen auf einer Anzeigeeinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711722A (en) * 1958-07-28 1973-01-16 American Optical Corp Detecting systems and the like
WO1980002218A1 (fr) * 1979-04-02 1980-10-16 Massachusetts Inst Technology Affichage en trois dimensions
EP0624958A2 (fr) * 1993-05-14 1994-11-17 Sony Corporation Système de commande à distance pour des appareils audio/vidéo
DE29704397U1 (de) * 1997-01-27 1997-07-17 Lumino Licht Elektronik GmbH, 47799 Krefeld Vorrichtung zur Anzeige von alpha-numerischen Zeichen und/oder Bildzeichen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711722A (en) * 1958-07-28 1973-01-16 American Optical Corp Detecting systems and the like
WO1980002218A1 (fr) * 1979-04-02 1980-10-16 Massachusetts Inst Technology Affichage en trois dimensions
EP0624958A2 (fr) * 1993-05-14 1994-11-17 Sony Corporation Système de commande à distance pour des appareils audio/vidéo
DE29704397U1 (de) * 1997-01-27 1997-07-17 Lumino Licht Elektronik GmbH, 47799 Krefeld Vorrichtung zur Anzeige von alpha-numerischen Zeichen und/oder Bildzeichen

Also Published As

Publication number Publication date
DE19810683A1 (de) 1999-09-16
AU3144599A (en) 1999-09-27

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