EP0156544A2 - Dispositif d'affichage visuel - Google Patents

Dispositif d'affichage visuel Download PDF

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Publication number
EP0156544A2
EP0156544A2 EP85301486A EP85301486A EP0156544A2 EP 0156544 A2 EP0156544 A2 EP 0156544A2 EP 85301486 A EP85301486 A EP 85301486A EP 85301486 A EP85301486 A EP 85301486A EP 0156544 A2 EP0156544 A2 EP 0156544A2
Authority
EP
European Patent Office
Prior art keywords
display apparatus
visual display
artwork
array
light
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Withdrawn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
EP85301486A
Other languages
German (de)
English (en)
Other versions
EP0156544A3 (fr
Inventor
Trevor John Lock
John Edward Scott-Hubbard
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.)
ASHKALE LIMITED
Original Assignee
ASHKALE 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 ASHKALE Ltd filed Critical ASHKALE Ltd
Publication of EP0156544A2 publication Critical patent/EP0156544A2/fr
Publication of EP0156544A3 publication Critical patent/EP0156544A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • This invention relates to visual display apparatus for use in displaying alphanumeric and graphic visible images.
  • visual display apparatus comprising means for forming an array of light emitting sources, means for causing said array to move cyclically so that said sources perform a repetitive scanning of a display zone, and control means for controlling the state of illumination of said light sources during said cyclic movement so as to cause said light sources to create in said display zone the appearance of an image which extends in the direction of movement of the array.
  • said array forming means is arranged to form a plurality of said arrays of light emitting sources arranged to scan said display zone in repeating succession.
  • the or each said array of sources is carried on a rotatable support.
  • means are included for providing an indication of the rotational position of the said array or arrays to permit synchronisation of the state of illumination of said light sources in accordance with the rotation of said arrays.
  • said control means includes data memory means for storing data determining for each increment of movement of the or each said array, the state of illumination of each said light emitting source in said arrays.
  • said data memory means is in the form of a detachable memory storage device.
  • means are included for programming said data memory means with data representative of artwork to be displayed as an image by the apparatus.
  • said means for programming said data memory means comprises a rotatable drum for attachment of artwork, a light source for projecting light towards a segment of said artwork on said drum, sensor means for detecting light reflected from said segment of said artwork and memory means entering data representative of the light reflected from said segment of said artwork into said data storage means.
  • said means for programming said data storage means includes means for detecting different colours on said artwork.
  • said means for detecting different colours on said artwork comprises means for projecting different coloured light sources towards said artwork and means for detecting corresponding coloured light reflected from said artwork.
  • a first embodiment of visual display apparatus comprises a rotary beam support 1 secured by way of a bush 2 to the spindle of a motor 3.
  • Each end of the beam 1 carries a depending bracket 4 upon which an array, in this case a vertical row, of light sources 5 is carried.
  • each array includes nine-such light sources, one array comprising red light emitting diodes and the other array comprising green light emitting diodes.
  • Each bracket 4 is braced by a tie bar 6 extending obliquely from the lower end of the bracket 4 to an intermediate point on the beam support 1.
  • circuit board 8 which carries part of the electronic circuitry for controlling the energisation of the two arrays of light sources 5. Wires (not shown) extend from the circuit board 8 to the light sources 5 along the outer portions of the beam support 1.
  • the bush 2 includes a pair of commutator rings 9 which are contacted by brush contacts 10 through which power can be supplied to the circuitry carried on the circuit board 8, which rotates with the beam support 1.
  • the bush 2 extends through a central aperture in a disc 11 which is fixedly mounted with respect to the casing of the motor 3.
  • the outer periphery of the disc 11 is regularly slotted to provide an optical grating comprising a regular succession of alternately light transmissive and opaque segments which can be detected by an optical reading device 12 carried on the underside of the beam support 1.
  • This device 12 includes a light source arranged to illuminate the edge of the disc 11 from one side thereof and a photo detector arranged to view the illuminated edge of the disc from the other side.
  • the photo detector produces a pulse, or an oscillating electrical output of which the frequency is indicative of the instantaneous speed of rotation of the beam support.
  • a count of the pulses or maxima of such output provides an indication of the instantaneous position of the disc and therefore of the light source arrays.
  • the electronic circuitry carried on the circuit board 8, is provided for controlling the energisation of the light emitting diodes, which form the light sources 5, in synchronism with the output of the optical reading device so as to cause the diode arrays to display a predetermined image.
  • This can be achieved by deriving for successive synchronizing pulses or maxima successive binary words each comprising data bits defining, for a given rotational increment, the state of energisation of the light emitting diodes in one or both arrays.
  • the linear patterns displayed instantaneously by the diode arrays change very rapidly as they rotate, to cause the image to appear to the relatively slowly responding human eye to be displayed.
  • a circuit board 13 is mounted on a rotary spindle 14 and itself constitutes a support member on which diametrically opposed upstanding brackets 15, carrying respective arrays of different coloured light emitting diodes 16, are mounted.
  • the upper ends of the brackets 15 are braced against outward movement due to centrifugal forces by a bracing plate 17 also mounted on the spindle and spaced axially from the circuit board 13.
  • the spindle 14 carries, beneath the circuit board 13, a bush 18 including commutator rings 19 contacted by brush contacts 20 for the supply of electrical power for the control circuit carried on the circuit board 13.
  • the spindle 14 carries a driven pulley 21 around which passes a drive belt 22 driven by a drive pulley 23 connected to the spindle 24 of a drive motor 25.
  • the pulley 21 carries a pair of upwardly projecting electrically conductive pins 39 which are electrically connected with the respective rings 19 and which locate in sockets 40 in the circuit board 13 for the supply of power.
  • the pins 39 also transmit torque from the pulley 21 to the circuit board 13 to cause the rotation of the latter.
  • a fixed non-rotating optical grating element in the form of an upstanding cylindrical optically segmented flange 27 which is carried on a support 41 and which is straddled by an optical reading device 28, again having a light source and photodetector between which the optical path is intermittently interrupted by rotation of the segmented flange 27.
  • the optical reading device 28 is fixed to the underside of the circuit board 13. This construction is advantageous in permitting removal and replacement of the spinning assembly comprising the circuit board 13, brackets 15 carrying diode arrays 16, bracing plate 17, and optical reading device 28 by vertical sliding along the spindle 14.
  • the flange may comprise a cylindrically formed strip of film.
  • circuitry which may be used for the control of the light sources in the visual display apparatus of Figs. 1 and 2.
  • the circuit components to the right of the broken dividing line are carried on the circuit board 8 or 13 of the devices as illustrated in Figs. 1 and 2; these components comprises a data store 29 of the random access memory (RAM) type which can store, for each increment of rotation of the light source arrays a code or codes, in binary word form determining the state of energisation for each light source in the arrays.
  • RAM random access memory
  • the two lights source arrays may be electrically interconnected to be synchronously controlled, or may be separately controlled depending upon the nature of the display required.
  • a counter 30 is provided for counting the pulses, or maxima in the wave form of the signal put out from the optical reading device 12 or 28.
  • the RAM 29 is arranged to be addressed by the incrementing count output from counter 30 so as to produce on outputs 31,31a the sets of energising signals for the two light source arrays in synchronism with their rotation.
  • a mode control/reset unit 32 determines the mode of display of the device at any given time. For example, the display may be controlled to display a stationary image or a forwardly or backwardly moving image or a positive or negative image. To determine whether the device will operate in a stationary or moving image mode, the reset unit 32 determines the manner of reset of the counter 30. For example, if the optical read-out cooperates with the segmented disc to produce 144 pulses per complete revolution of the light source arrays, and the reset unit 32 operates to reset the counter 30 after each 144 counted pulses, the displayed image will appear stationary, since the cycle of the sequential supply of energising control signals is exactly synchronized with the rotation of the diode arrays.
  • the code determining the state of energisation of each light source will be the same in one revolution as in the preceding revolution.
  • the reset unit 32 operates to reset the counter after 145 pulses the arrays will have advanced by one increment when energised in accordance with a given stored code with respect to their positions during the previous revolution when they were energised in accordance with that same code; accordingly, the displayed image will appear to move forward (i.e. in the direction of rotation of the arrays) at a speed determined by the spacing of the rotational increments and the speed of rotation of the arrays.
  • the reset unit 32 can also cause an inverter unit 33 to invert the energising signals on outputs 31, 31a so as to change between positive and negative image forming modes (i.e. by causing inversion of the energising signals).
  • a support member and electronic circuit board 50 is mounted on a rotary spindle and carries a pair of diametrically opposed upstanding brackets 51, carrying respective array boards 52 of different coloured light emitting diodes.
  • the array boards 52 have decoding and latching devices included, thus cutting down the number of electrical connectors needed to the boards.
  • Groups of light emitting diodes are displaced along.the. vertical axis as illustrated at 53a, 53b, 53c and 53d. This allows for the fact that when each group of light emitting diodes is multiplexed in sequence the array boards 52 move a finite amount with relation to other groups. The groups are thus offset by this amount.
  • the array boards 52 comprise: the light emitting diodes, diode driver circuits, which also contain latches, and a decoder which receives a binary count and converts it into individual lines which then control the strobing of the various diode latches and drivers.
  • This type of multiplexing means that 64 light emitting diodes (32 red and 32 green) can be controlled by an eight line (data bus) selected by three lines of binary notation so that any combination of those three lines produce a decimal number in the range 0-7.
  • '0' may strobe the common data bus into the top eight red light emitting diodes; '1' may strobe the top eight green light emitting diodes and so on giving a total combination of eight decimal addresses each controlling their on/off state according to the eight bit data bus at the time of strobe.
  • the single circuit board for controlling the two array boards 52 comprises an on board free running oscillator which is carefully controlled so as to be able to present an apparently stationary image to the viewer by maintaining the same display information at each physical sweep of the arrays, thereby overlaying the displayed information.
  • the picture information is contained in a single PROM (programmable read only memory) which may either be on a separate circuit board or designed to attach to a plug in memory receptor 54 on the circuit board 50.
  • PROM programmable read only memory
  • This embodiment of the display apparatus also includes a personality module which is a plug in chip which contains specific information to control the rest of the electronics and control which page of information is to be displayed at any one time.
  • the personality module chip is a PROM which has eight outputs used by various circuits. Some of these circuits are three lines which control part of the address of the program prom thereby being able to select any one of eight pages with the remaining 5 outputs controlling other special effect functions, for example:
  • the personality chip is designed to contain a number of different personalities which are accessed by a bank of switches 55. Assume each personality takes up to thirty two sequential instructions which may be, for example:
  • the circuit elements to the left of the broken dividing line in Fig. 4 constitute programming apparatus which can be used to pre-program the display device with the information defining the images to be displayed.
  • the apparatus and the electronic circuitry on the circuit board 8 are temporarily coupled during programming by way of a multiple contact coupling, one part of which is carried on the board.
  • the programming data is supplied in parallel form through the coupling.
  • An alternative method of data supply is by way of a contact 34 contacting the spindle of the motor 3 and a contact 35 carried on the underside of the circuit board 8 contacting the other end of the spindle.
  • the data would be put in serial form in the programming unit supplied to contact 34, and decoded by appropriate means on the circuit board.
  • the programming apparatus is operable to write into the RAM 29 the binary words constituting codes to be read for each increment of rotation of the light source arrays.
  • the programming apparatus comprises a binary word generator and an incremental programming counter 37.
  • the counter 37 advances the program counter 30 which in response addresses successive groups of memory locations of the RAM 29.
  • a binary word is put out from the word generator 36 and written into the store 29 by way of the write line 38 for storage.
  • the word generator 36 may, for example, be one which reads punched tape to generate, in accordance with the code on the tape the binary words for storage in RAM 29.
  • the mode control/reset unit 32 may be programmable to provide any of a variety of display mode sequences. For example, it may be operable to control the resetting of counter 30 and mode of the inverter unit 33 so as first to display a stationary image then to cause forward movement of the image, then to invert the image and cause reverse movement thereof, and then to revert to the stationary positive form of the displayed image.
  • programmer apparatus comprises a cylindrical drum 60 to which artwork or graphics 61, which is to be displayed by the display apparatus, is attached.
  • Sensor apparatus generally represented at 62 is positioned next to the drum 60 and serves to enter information representative of the artwork into a memory 63.
  • light from a source 64 is projected via a fibre optic tube 65 to a sensor head 66 and reflected back off the artwork 61 along a fibre optic tube 67 to a light sensor 68.
  • the sensor head 66 When a dark area of the artwork passes the sensor head 66 the light sensor 68 registers a pulse in the memory 63. The stored pulses are then used to produce a picture on the display apparatus.
  • a control unit 70 operates a drive motor 71 which drives the drum 60 via a drive belt 72.
  • a bank of sensors 66 is positioned over part of the picture.
  • the sensor head also contains an illuminating lamp 73 (Fig. 7) which passes through a colour filter 74 (the colour at which it is set being governed by information from the control unit 70). As the picture passes the head, the colour which is being directed from the lamp reflects best off of the same colour on the picture. Sensors 68 receive this extra intensity and are actuated if that colour is present.
  • This information is then sent back to the control 70 unit where it is stored in the memory.
  • the memory locations are updated every time a 'pulse' is received from the positional sensor which is looking at a series of lines on the paper corresponding to the required matrix size of the picture.
  • each of these lines is a hex number which can be cross referenced to the control unit 70 which will also be displaying a hex number. This aids the operator to interrogate the memory contents and to see what the control unit 70 has interpreted for that segment of picture.
  • the colour filter 74 is automatically changed for the next colour and the process is repeated. This time however, the control unit 70 allocates a different area of memory for that colour.
  • a carriage motor 75 moves the sensor head 66 to the next segment of picture to be read.
  • Information from an appropriate micro switch positional sensor 76 tells the control unit 70 when to stop the carriage motor 75.
  • control unit 70 switches automatically to a different area of memory.
  • the sensor head shown in Fig. 7 is 'colour discriminating'. It may be substituted by a head which is not colour discriminating. In this option the original artwork of the picture would be broken down into its primary colours and a separate sheet of artwork 61 would be fastened to the drum 60 for each colour. Although each sheet would be monochrome.
  • the control unit 70 can recognise the two different types of head and activate the drum/carriage colours accordingly.
  • the user can manipulate this data'and eventually commit it to a memory module which will then unplug from the programmer and plug into the visual display apparatus whereupon the memory module will be interrogated by the display apparatus electronics and display this data which will be an electronic copy of the original artwork.
  • the display zone in which images can be displayed extends around the full 360° of rotation of the light source arrays and therefore permits viewing the displayed images from any circumferential position.
  • a circumferentially confined image can be displayed at a number of circumferential positions and a moving image can similarly be viewed from any desired circumferential position.
  • control circuitry when using one or more programmable read only memory (PROM) devices time sharing of advertising display time, where the device is used for the display of advertising material, is possible, with each PROM being preprogrammed with data defining matter to be displayed in visual form by the display device as advertising material for a particular customer.
  • PROM programmable read only memory
  • a simple modification can provide three dimensional display.
  • an arrangement may be provided in which the outer array forms an image while the inner array forms a background for the image, or another image which is intended to appear behind the image of the outer array.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
EP85301486A 1984-03-06 1985-03-04 Dispositif d'affichage visuel Withdrawn EP0156544A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8405760 1984-03-06
GB848405760A GB8405760D0 (en) 1984-03-06 1984-03-06 Spacewriter programmer

Publications (2)

Publication Number Publication Date
EP0156544A2 true EP0156544A2 (fr) 1985-10-02
EP0156544A3 EP0156544A3 (fr) 1987-11-19

Family

ID=10557625

Family Applications (1)

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EP85301486A Withdrawn EP0156544A3 (fr) 1984-03-06 1985-03-04 Dispositif d'affichage visuel

Country Status (2)

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EP (1) EP0156544A3 (fr)
GB (1) GB8405760D0 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689604A (en) * 1983-03-03 1987-08-25 S-V Development Ltd. Moving visual display apparatus
GB2187588A (en) * 1986-02-27 1987-09-09 George William Coulthard Visual display apparatus
EP0386269A1 (fr) * 1988-09-02 1990-09-12 TOKIMOTO, Toyotaro Systeme d'affichage de type balayage n-dimensionnel et son appareil
US5057827A (en) * 1988-10-17 1991-10-15 Nobile Fred E Means and method for producing an optical illusion
US5302965A (en) * 1989-04-13 1994-04-12 Stellar Communications Limited Display
WO1996011462A1 (fr) * 1994-10-06 1996-04-18 S.C. Sentron Srl Procede et dispositif de visualisation d'informations
WO1997050070A1 (fr) * 1996-06-26 1997-12-31 Lumino Licht Elektronik Gmbh Dispositif pour afficher des caracteres et des symboles alphanumeriques
WO1998005023A1 (fr) * 1996-07-25 1998-02-05 Kohne Ingenieurbüro GmbH Dispositif d'affichage a plusieurs sources de lumiere et agencement de dispositifs d'affichage
WO1998013814A1 (fr) * 1996-09-25 1998-04-02 Szekeres Laszlo Equipement d'affichage a rotation
NL1007062C2 (nl) * 1997-09-17 1999-03-18 Trade International Trading Display-inrichting.
WO2000045363A1 (fr) * 1999-01-26 2000-08-03 Gi2 Ltd. Dispositif d'affichage rotatif
US6278419B1 (en) 1997-06-26 2001-08-21 Light Spin Ltd. Moving display
WO2005057531A1 (fr) * 2003-12-12 2005-06-23 Sergey Ivanovich Kishinsky Dispositif electronique et mecanique rotatif destine a l'affichage dynamique de donnees

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021096A1 (fr) * 1979-06-29 1981-01-07 International Business Machines Corporation Dispositif de formation d'image pour produire des signaux électriques et son utilisation dans un appareil de fac-similé
EP0052996A1 (fr) * 1980-11-20 1982-06-02 Kabushiki Kaisha Kobe Seiko Sho Dispositif pour combiner l'information d'une image
EP0065242A1 (fr) * 1981-05-09 1982-11-24 DR.-ING. RUDOLF HELL GmbH Dispositif récepteur de lumière
FR2514537A1 (fr) * 1981-10-09 1983-04-15 Benquet Patrick Systeme autonome d'information sur des donnees accessibles periodiquement notamment touristiques, pratiques et de loisir

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021096A1 (fr) * 1979-06-29 1981-01-07 International Business Machines Corporation Dispositif de formation d'image pour produire des signaux électriques et son utilisation dans un appareil de fac-similé
EP0052996A1 (fr) * 1980-11-20 1982-06-02 Kabushiki Kaisha Kobe Seiko Sho Dispositif pour combiner l'information d'une image
EP0065242A1 (fr) * 1981-05-09 1982-11-24 DR.-ING. RUDOLF HELL GmbH Dispositif récepteur de lumière
FR2514537A1 (fr) * 1981-10-09 1983-04-15 Benquet Patrick Systeme autonome d'information sur des donnees accessibles periodiquement notamment touristiques, pratiques et de loisir

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 21, no. 12, May 1979, pages 4768-4770, New York, US; O.D. JOHNSON et al.: "Drive for vibrating LED display" *
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 21, no. 2, July 1978, page 726, New York, US; W.F. VOIT, Jr.: "One-line LED display" *
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 22, no. 11, April 1980, pages 5015-5016, New York, US; T.G. TWARDECK: "Rotating multi-station display" *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689604A (en) * 1983-03-03 1987-08-25 S-V Development Ltd. Moving visual display apparatus
GB2187588A (en) * 1986-02-27 1987-09-09 George William Coulthard Visual display apparatus
EP0386269A1 (fr) * 1988-09-02 1990-09-12 TOKIMOTO, Toyotaro Systeme d'affichage de type balayage n-dimensionnel et son appareil
EP0386269A4 (en) * 1988-09-02 1991-08-21 Toyotaro Tokimoto N-dimensional scan type display system and its apparatus
US5202675A (en) * 1988-09-02 1993-04-13 Toyotaro Tokimoto N-dimensional scanning type display apparatus
US5057827A (en) * 1988-10-17 1991-10-15 Nobile Fred E Means and method for producing an optical illusion
US5302965A (en) * 1989-04-13 1994-04-12 Stellar Communications Limited Display
WO1996011462A1 (fr) * 1994-10-06 1996-04-18 S.C. Sentron Srl Procede et dispositif de visualisation d'informations
WO1997050070A1 (fr) * 1996-06-26 1997-12-31 Lumino Licht Elektronik Gmbh Dispositif pour afficher des caracteres et des symboles alphanumeriques
WO1998005023A1 (fr) * 1996-07-25 1998-02-05 Kohne Ingenieurbüro GmbH Dispositif d'affichage a plusieurs sources de lumiere et agencement de dispositifs d'affichage
US6433761B1 (en) 1996-07-25 2002-08-13 Kohne Ingenieurburo Gmbh Display device with several light sources and arrangement of display devices
WO1998013814A1 (fr) * 1996-09-25 1998-04-02 Szekeres Laszlo Equipement d'affichage a rotation
US6278419B1 (en) 1997-06-26 2001-08-21 Light Spin Ltd. Moving display
NL1007062C2 (nl) * 1997-09-17 1999-03-18 Trade International Trading Display-inrichting.
WO1999014730A1 (fr) * 1997-09-17 1999-03-25 Per Trade International Trading Unite d'affichage equipee d'elements graphiques rotatifs
WO2000045363A1 (fr) * 1999-01-26 2000-08-03 Gi2 Ltd. Dispositif d'affichage rotatif
WO2005057531A1 (fr) * 2003-12-12 2005-06-23 Sergey Ivanovich Kishinsky Dispositif electronique et mecanique rotatif destine a l'affichage dynamique de donnees

Also Published As

Publication number Publication date
EP0156544A3 (fr) 1987-11-19
GB8405760D0 (en) 1984-04-11

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