EP0990228B1 - Visual display systems - Google Patents

Visual display systems Download PDF

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Publication number
EP0990228B1
EP0990228B1 EP98930895A EP98930895A EP0990228B1 EP 0990228 B1 EP0990228 B1 EP 0990228B1 EP 98930895 A EP98930895 A EP 98930895A EP 98930895 A EP98930895 A EP 98930895A EP 0990228 B1 EP0990228 B1 EP 0990228B1
Authority
EP
European Patent Office
Prior art keywords
wheel
light emitting
controller
array
control means
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
Application number
EP98930895A
Other languages
German (de)
French (fr)
Other versions
EP0990228A1 (en
Inventor
Guy Edward John Margetson
Thomas Andrew Hedges
Roy Wyatt
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.)
Adflash Ltd
Original Assignee
Adflash 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 Adflash Ltd filed Critical Adflash Ltd
Publication of EP0990228A1 publication Critical patent/EP0990228A1/en
Application granted granted Critical
Publication of EP0990228B1 publication Critical patent/EP0990228B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/005Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F21/00Mobile visual advertising
    • G09F21/04Mobile visual advertising by land vehicles
    • G09F21/045Mobile visual advertising by land vehicles supported by the wheels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes

Definitions

  • the present invention relates to visual display systems.
  • the wheels of bicycles are often decorated with material which gives a pleasing effect to a remote viewer.
  • the wheel rotates and rotates at different speeds little more than a blur of colour is usually observable.
  • UK Patent Specification No 2277189 discloses a wand supporting an array of light emitting diodes which are programmed to be illuminated in a particular sequence to display a desired apparently stationary image. In order for the image to be displayed at a particular orientation, the angle of the wand and its speed are detected with respect to a hanging weight or gyro that remains unchanged in position when the wand moves.
  • UK Patent Specification No 2272791 discloses a light emitting diode matrix which can be fitted to a bicycle wheel to display an apparently stationary message.
  • Both these devices rely on a separate component which does not rotate with the wheel to determine the angular position and speed of the wheel.
  • a display system for a rotary wheel mounted for rotation about an axis inclined to the direction of the gravitational field comprising an elongate array of light emitting devices to be mounted on the wheel extending in a radial direction, a controller to be mounted on the wheel and connected to the light emitting devices for controlling the energisation of the light emitting devices in a sequence in accordance with a program stored in a memory of the controller, an accelerometer to be mounted on the wheel spaced from the axis of the wheel to provide an output indicative of the speed and angular position of the wheel, and control means responsive, each time said output indicates that a predetermined angular position has been reached to initiate an energising cycle for the array of light emitting devices by the controller at instants in the cycle determined in accordance with the program stored in the memory, the control means varying the rate of energisation in accordance with the speed of the wheel whereby to provide an apparently stationary image on the wheel corresponding to the program stored.
  • Figure 1 shows a bicycle 2 having a front wheel 4 carrying an illuminated image of a registered trade mark REEBOK which, to the stationary observer, appears stationary on the bicycle notwithstanding that the wheel 4 is rotating.
  • the wheel 4 is supported by a fork 6.
  • Attached to one spoke 8 of the wheel 4 is an elongate array 10 comprising sixteen light emitting diodes (LEDs) extending radially of the wheel 4.
  • a controller 16 which includes a battery (not shown), and is connected to the array 10 by a cable 18.
  • the imbalance caused by the attachments to the wheel can be corrected by the use of counterweights (not shown) attached to the diametrically opposite side of the wheel.
  • the controller includes a memory (not shown) that stores a program for controlling the sequence in which the different LEDs of the array are to be energised.
  • the effect is achieved because with light flashes of very short duration, the reaction of the human eye to the flash persists long after the flash has finished.
  • a series of very short flashes occur over a short time span, less than 0.015 seconds, all the flashes appear to the eye to have occurred at the same time and when the flashes are spaced from one another on the retina because the array has moved relative to the retina, the eye perceives a composite light pattern which will persist for a short while immediately following the time span.
  • a program can be created and stored in the memory which will produce almost any desired image for the observer.
  • the image may take the form of alphanumeric information or may take the form of an advertising poster.
  • the rotation of the wheel has to be sensed.
  • An accelerometer 14 is mounted on the wheel at a point radially distant from the axis of the wheel. As the wheel rotates, the accelerometer will have a component of motion in the direction of the gravitational field and this will cause the accelerometer to generate a sinusoidal electric output indicative of both speed any angular position of the wheel as the wheel rotates. This output can then be used by the controller to illuminate the LEDs at any desired attitude as the wheel rotates.
  • Control means (not shown) within the controller 16 responds to the output to initiate the readout from the memory at the same angular position of the spoke 8 during each full cycle of rotation of the spoke.
  • the control means also determines the speed of the wheel and inhibits a readout from the memory until the speed of the wheel reaches 35 rpm. After this point has been reached, the control means controls the readout rate from the memory to the array directly in proportion to the instantaneous repetition rate determined by the control means.
  • FIG. 3 shows how the memory of the controller 16 can be programmed.
  • a desired image is created with the aid of an IBM PC compatible computer 20 and configured as a 200 x 16 pixel array.
  • the array is downloaded into a programmer 22 which converts the driving data stream into a processor compatible processing stream.
  • the processor in turns loads the program for the array into the memory of the controller.
  • power can be fed from a source mounted on the bicycle frame to the wheel through a slip ring arrangement.
  • the controller 16 can be in two parts, a first part fixed to the spoke and a second part which can be plugged into the first part which contains the power supply (the batteries) and the memory.
  • the plug-in part can be removed for security purposes and/or to reprogram the memory.
  • any number of arrays can be mounted on the wheel in different attitudes and shapes to form a complex display pattern as required.

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

A bicycle wheel (4) is supported by a fork (6) to which a magnet (12) is attached. Attached to one spoke (8) of the wheel (4) is an elongate array (10) comprising sixteen light emitting diodes extending radially of the wheel (4). A controller (16), mounted on the spoke (8) is connected to the array (10) by a cable (18). The controller includes a memory that stores a program for controlling the sequence in which the different LEDs of the array are to be energised. By selecting the timing and energisation of the different LEDs in accordance with a predetermined program, the observer will see an apparently stationary image on the wheel notwithstanding that it is rotating.

Description

The present invention relates to visual display systems.
The wheels of bicycles are often decorated with material which gives a pleasing effect to a remote viewer. However, because the wheel rotates and rotates at different speeds little more than a blur of colour is usually observable.
UK Patent Specification No 2277189 discloses a wand supporting an array of light emitting diodes which are programmed to be illuminated in a particular sequence to display a desired apparently stationary image. In order for the image to be displayed at a particular orientation, the angle of the wand and its speed are detected with respect to a hanging weight or gyro that remains unchanged in position when the wand moves.
UK Patent Specification No 2272791 discloses a light emitting diode matrix which can be fitted to a bicycle wheel to display an apparently stationary message.
Both these devices rely on a separate component which does not rotate with the wheel to determine the angular position and speed of the wheel.
It is an object of the invention to provide an improved display system for a rotary wheel.
According to the present invention there is provided a display system for a rotary wheel mounted for rotation about an axis inclined to the direction of the gravitational field, the system comprising an elongate array of light emitting devices to be mounted on the wheel extending in a radial direction, a controller to be mounted on the wheel and connected to the light emitting devices for controlling the energisation of the light emitting devices in a sequence in accordance with a program stored in a memory of the controller, an accelerometer to be mounted on the wheel spaced from the axis of the wheel to provide an output indicative of the speed and angular position of the wheel, and control means responsive, each time said output indicates that a predetermined angular position has been reached to initiate an energising cycle for the array of light emitting devices by the controller at instants in the cycle determined in accordance with the program stored in the memory, the control means varying the rate of energisation in accordance with the speed of the wheel whereby to provide an apparently stationary image on the wheel corresponding to the program stored.
A bicycle having a visual display system, embodying the present invention, will now be described by way of example, with reference to the accompanying diagrammatic drawings, in which:
  • Figure 1 is a perspective view of the bicycle displaying an advertising trade mark;
  • Figure 2 is a fragmentary view of the front wheel of the bicycle incorporating the display; and
  • Figure 3 is a block diagram of the display system in conjunction with a system for reprogramming the display system.
  • Figure 1 shows a bicycle 2 having a front wheel 4 carrying an illuminated image of a registered trade mark REEBOK which, to the stationary observer, appears stationary on the bicycle notwithstanding that the wheel 4 is rotating.
    As shown in Figure 2, the wheel 4 is supported by a fork 6. Attached to one spoke 8 of the wheel 4 is an elongate array 10 comprising sixteen light emitting diodes (LEDs) extending radially of the wheel 4. Also mounted on the same spoke 8 is a controller 16, which includes a battery (not shown), and is connected to the array 10 by a cable 18. The imbalance caused by the attachments to the wheel can be corrected by the use of counterweights (not shown) attached to the diametrically opposite side of the wheel.
    The controller includes a memory (not shown) that stores a program for controlling the sequence in which the different LEDs of the array are to be energised. By selecting the timing and energisation of the different LEDs in accordance with a predetermined program, the observer will see an apparently stationary image on the wheel notwithstanding that it is rotating.
    The effect is achieved because with light flashes of very short duration, the reaction of the human eye to the flash persists long after the flash has finished. Thus, where a series of very short flashes occur over a short time span, less than 0.015 seconds, all the flashes appear to the eye to have occurred at the same time and when the flashes are spaced from one another on the retina because the array has moved relative to the retina, the eye perceives a composite light pattern which will persist for a short while immediately following the time span. It will thus be appreciated that a program can be created and stored in the memory which will produce almost any desired image for the observer. The image may take the form of alphanumeric information or may take the form of an advertising poster.
    In order for the viewed display to start at a particular angular location on the wheel and to prevent drift due to a change in speed of the wheel, the rotation of the wheel has to be sensed. An accelerometer 14 is mounted on the wheel at a point radially distant from the axis of the wheel. As the wheel rotates, the accelerometer will have a component of motion in the direction of the gravitational field and this will cause the accelerometer to generate a sinusoidal electric output indicative of both speed any angular position of the wheel as the wheel rotates. This output can then be used by the controller to illuminate the LEDs at any desired attitude as the wheel rotates. Control means (not shown) within the controller 16 responds to the output to initiate the readout from the memory at the same angular position of the spoke 8 during each full cycle of rotation of the spoke.
    Thus, the start point of the image will always be in the same position. The control means also determines the speed of the wheel and inhibits a readout from the memory until the speed of the wheel reaches 35 rpm. After this point has been reached, the control means controls the readout rate from the memory to the array directly in proportion to the instantaneous repetition rate determined by the control means.
    The block diagram in Figure 3 shows how the memory of the controller 16 can be programmed. As shown, a desired image is created with the aid of an IBM PC compatible computer 20 and configured as a 200 x 16 pixel array. The array is downloaded into a programmer 22 which converts the driving data stream into a processor compatible processing stream. The processor in turns loads the program for the array into the memory of the controller.
    It will be appreciated that instead of a battery, power can be induced into the controller from a rotary part of the bicycle using an induction system.
    As an alternative, power can be fed from a source mounted on the bicycle frame to the wheel through a slip ring arrangement.
    While the display system has been described in connection with a bicycle wheel, it will be appreciated that it can be applied to any other rotating member, for example to an automobile wheel (or hub caps therefor) or a funfair wheel.
    The controller 16 can be in two parts, a first part fixed to the spoke and a second part which can be plugged into the first part which contains the power supply (the batteries) and the memory. The plug-in part can be removed for security purposes and/or to reprogram the memory.
    Of course, while only one elongate array of LEDs is disclosed, any number of arrays can be mounted on the wheel in different attitudes and shapes to form a complex display pattern as required.

    Claims (7)

    1. A display system for a rotary wheel (4) mounted for rotation about an axis inclined to the direction of the gravitational field, the system comprising an elongate array of light emitting devices (10) to be mounted on the wheel (4) extending in a radial direction, a controller (16) to be mounted on the wheel (4) and connected to the light emitting devices (10) for controlling the energisation of the light emitting devices in a sequence in accordance with a program stored in a memory of the controller (16), an accelerometer (14) to be mounted on the wheel spaced from the axis of the wheel to provide an output indicative of the speed and angular position of the wheel, and control means responsive, each time said output indicates that a predetermined angular position has been reached to initiate an energising cycle for the array of light emitting devices (10) by the controller (16) at instants in the cycle determined in accordance with the program stored in the memory, the control means varying the rate of energisation in accordance with the speed of the wheel (4) whereby to provide an apparently stationary image on the wheel (4) corresponding to the program stored.
    2. A display system according to Claim 1, characterised in that the memory is reprogrammable to store data representing different images.
    3. A system according to Claim 1 or Claim 2, characterised in that said light emitting devices comprise light emitting diodes.
    4. A system according to any one of Claims 1 to 3, characterised in that the control means inhibits operation of the controller (16) until it senses that the rotary speed of the wheel (4) has reached a predetermined rate.
    5. A system according to any preceding claim, characterised in that the wheel (4) is a bicycle wheel and the array (10), the controller (16), the accelerometer (14) and the control means are all mounted on a common spoke of the wheel (4).
    6. A system according to any preceding claim, characterised in that the control means comprises two parts, a first part secured to the rotary wheel and a second part containing the memory, the second part being detachable from the first part and connectable to a computer for reprogramming.
    7. A system according to Claim 6, characterised in that the second part contains a power source for the system.
    EP98930895A 1997-06-21 1998-06-18 Visual display systems Expired - Lifetime EP0990228B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    GBGB9713035.5A GB9713035D0 (en) 1997-06-21 1997-06-21 Visual display systems
    GB9713035 1997-06-21
    PCT/GB1998/001794 WO1998059333A1 (en) 1997-06-21 1998-06-18 Visual display systems

    Publications (2)

    Publication Number Publication Date
    EP0990228A1 EP0990228A1 (en) 2000-04-05
    EP0990228B1 true EP0990228B1 (en) 2002-12-04

    Family

    ID=10814640

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98930895A Expired - Lifetime EP0990228B1 (en) 1997-06-21 1998-06-18 Visual display systems

    Country Status (8)

    Country Link
    EP (1) EP0990228B1 (en)
    AT (1) ATE229215T1 (en)
    AU (1) AU8117698A (en)
    CA (1) CA2295768C (en)
    DE (1) DE69809910T2 (en)
    ES (1) ES2189193T3 (en)
    GB (2) GB9713035D0 (en)
    WO (1) WO1998059333A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE202011103329U1 (en) 2010-11-30 2011-12-15 Marc Landmann light display

    Families Citing this family (15)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2347546A (en) * 1999-03-02 2000-09-06 Adflash Limited Wheel display system
    AU2000274833A1 (en) * 2000-09-14 2002-03-26 David J. Hoch Electronic display apparatus
    GB2382211A (en) * 2001-09-15 2003-05-21 Hyena Games Ltd Display device for a bicycle wheel
    BG64549B1 (en) 2002-09-11 2005-07-29 ШИВАРОВ Стефан Device for data visualization
    DE10353420B4 (en) * 2003-11-08 2007-05-16 Felix Boettcher One-piece or multi-part cabin for a bicycle taxi
    US7079042B2 (en) * 2003-12-19 2006-07-18 Michelin Recherche Et Technique S.A. System for providing illuminated displays on a vehicle tire or wheel assembly
    GB2409440A (en) * 2003-12-22 2005-06-29 Civil Engineering Dynamics Ltd Vehicle wheel lighting
    US7477208B2 (en) 2004-02-11 2009-01-13 Dan Matlock Rotational light emitting display apparatus
    GB2434856B (en) * 2006-01-25 2011-03-30 H Grossman Ltd Improved vehicles
    DE102010029638A1 (en) 2010-06-02 2011-12-08 Robert Bosch Gmbh Yo-yo device for use as toy, has control device controlling display device based on acceleration of base body detected by multi-axis acceleration sensor, where sensor detects various components of acceleration in different directions
    GB201507979D0 (en) 2015-05-11 2015-06-24 Cambridge Design Partnership Ltd And Speed Of Light Media Ltd Display systems
    CN107507548B (en) * 2017-09-12 2021-12-07 康佳集团股份有限公司 Wheel display device and display method
    CN108056766A (en) * 2017-12-11 2018-05-22 北京骑骑智享科技发展有限公司 Physical sign parameters display methods and device
    DE102019118849A1 (en) * 2019-07-11 2021-01-14 Bombardier Transportation Gmbh Vehicle, in particular rail vehicle, with a device for generating images, animations for external viewers
    WO2024123248A2 (en) * 2022-12-07 2024-06-13 Almadhi Abdulelah System and method for motorless variable speed holographic fan

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    GB2272791A (en) * 1992-11-24 1994-05-25 Lawford Delroy Marks Revolving information displays
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    Cited By (1)

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    Publication number Priority date Publication date Assignee Title
    DE202011103329U1 (en) 2010-11-30 2011-12-15 Marc Landmann light display

    Also Published As

    Publication number Publication date
    GB9813219D0 (en) 1998-08-19
    GB9713035D0 (en) 1997-08-27
    CA2295768C (en) 2006-12-05
    ES2189193T3 (en) 2003-07-01
    AU8117698A (en) 1999-01-04
    DE69809910D1 (en) 2003-01-16
    GB2326513A (en) 1998-12-23
    EP0990228A1 (en) 2000-04-05
    WO1998059333A1 (en) 1998-12-30
    DE69809910T2 (en) 2003-09-04
    GB2326513B (en) 2001-12-05
    CA2295768A1 (en) 1998-12-30
    ATE229215T1 (en) 2002-12-15

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