GB2289973A - Display of information - Google Patents

Display of information Download PDF

Info

Publication number
GB2289973A
GB2289973A GB9510707A GB9510707A GB2289973A GB 2289973 A GB2289973 A GB 2289973A GB 9510707 A GB9510707 A GB 9510707A GB 9510707 A GB9510707 A GB 9510707A GB 2289973 A GB2289973 A GB 2289973A
Authority
GB
United Kingdom
Prior art keywords
image
pattern
templates
template
desired image
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.)
Granted
Application number
GB9510707A
Other versions
GB9510707D0 (en
GB2289973B (en
Inventor
Edmond Latimer Rub
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.)
Vision Innovations Ltd
Original Assignee
Vision Innovations 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
Priority claimed from GB9410873A external-priority patent/GB9410873D0/en
Priority claimed from GB9422779A external-priority patent/GB9422779D0/en
Application filed by Vision Innovations Ltd filed Critical Vision Innovations Ltd
Priority to GB9510707A priority Critical patent/GB2289973B/en
Publication of GB9510707D0 publication Critical patent/GB9510707D0/en
Publication of GB2289973A publication Critical patent/GB2289973A/en
Application granted granted Critical
Publication of GB2289973B publication Critical patent/GB2289973B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F11/00Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09CCIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C1/00Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • G09C1/04Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system with sign carriers or indicators moved relative to one another to positions determined by a permutation code, or key, so as to indicate the appropriate corresponding clear or ciphered text
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09CCIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C5/00Ciphering apparatus or methods not provided for in the preceding groups, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

Devices and methods for displaying images encrypting images and decrypting images are described. The device comprises a set of at least two patterned templates, at least one of which templates being at least partially pervious to vision, the templates being movable independently of each other into predetermined positions and/or orientation(s) with respect to each other in superposed relationship so that the combined patterns form the desired image(s), wherein the pattern on at least one template is wholly unrelated to any desired image(s) and wherein the pattern(s) on the other templates represents the desired image(s) in an incomplete and unrecognisable form. The or each pattern comprises a plurality of spaced pattern elements, the desired image(s) being formed by the juxtaposition and/or the superposition of the pattern elements as the templates are superposed. The templates may be transparent and may have a planar or curved form. The templates may be rotated relative to each other (Figure 3) in an arrangement wherein movement may be temporarily interrupted when a desired image is displayed. Alternatively, the templates may be formed on two loops (Figure 4). The templates may be illuminated. Further a first pattern may be broadcast on a T.V. screen, with the second pattern being on a translucent template held before the screen. Furthermore, one template may be machine readable with the other template held in a computer. Thus the device may be used for entertainment, advertising or security purposes. <IMAGE>

Description

:CMPROVEMENTS IN AND RELATING TO THE DISPLAY OF INFORMATION This invention relates to devices and methods for displaying information in the form of an image, or picture.
Display devices in the form of novelty articles are known in which a desired image can be produced by the superposition of a number of elements each bearing a portion of the desired image. With such devices it is possible to discern the nature of the desired image from a single element, even if there are many elements each bearing only a small portion of the image.
In accordance with the present invention a device for displaying at least one desired image comprises a set of at least two patterned templates, at least one of the templates being at least partially pervious to vision, the templates being movable independently of each other into predetermined positions and/or orientation(s) with respect to each other in superposed relationship so that the combined patterns form the desired image(s), wherein the pattern on at least one template is wholly unrelated to any desired image(s) and wherein the pattern(s) on the other templates represents the desired image(s) in an incomplete and unrecognisable form.
With such a device, which may comprise only two patterned templates, it is not possible to discern the nature of a desired image from one template, because the pattern thereon is wholly unrelated to the desired image, nor from the other template without reference to the unrelatedly-patterned template because the desired image is encrypted using the unrelated pattern. Thus, suchdevices are suitable for encrypting and relaying confidential images or information. Preferably the patterns on the templates comprise a mass of irrelevant detail surrounding the desired image(s) in order further to render any desired image unrecognisable.
Without being in possession of both or all of the templates it is therefore impossible for an unauthorised individual to discern the image, or information.
Such a device may also be used as an eye-catching moving advertising poster or billboard as a novelty article, promotional or educational article, sign, game and the like.
A method of displaying at least one desired image in accordance with the invention comprises reducing the desired image(s) to an incomplete and unrecognisable pattern on at least one template by subtracting from the desired image(s) components thereof in dependence on the pattern on at least one other template, the pattern on the said other templates being wholly unrelated to the desired image(s), at least one of the templates being at least partially pervious to vision, and moving the templates into predetermined positions and/or orientations(s) with respect to each other in superposed relationship so that the combined patterns form the desired image(s).
At least one of the templates may be transparent, semi-transparent or pierced with holes so that when the templates are placed in superposition the pattern(s) on underlying templates can be seen through the uppermost patterned templates. The device, when used as an advertising sign, may be backlit so as to make the sign more eye-catching, and means may be provided to move the templates relative to one another to provide an everchanging and eye-catching display caused by the patterns interacting. When the templates reach a predetermined position and/or orientation relative to each other such that a desired image is formed, the movement may be momentarily interrupted so that the desired image is visible for a short period, before movement recommences and the desired image dissolves into a moving pattern.
The patterns may consist of various elements such as spaced dots, lines, marks or the like, and the superpositioning of the templates bearing the patterns may form a desired image by the superposition, by the juxtaposition, or by a combination of superposition and juxtaposition of the elements forming the patterns.
The juxtapositioning of the pattern elements to form a desired image is particularly suitable where the patterns are monochrome; the additive effect of the juxtapositioning of the monochrome pattern elements forms a monochromatic desired image.
The superpositioning of the pattern elements to form a desired image is particularly suitable where the patterns are polychromatic. For example the superposition of a red element over a green element (or vice versa) will produce an element of dark brown/black colour which will stand out from adjacent red or green dots to form a monochromatic dark brown/black desired image.
A combination of superposing and juxtaposing patterned elements may be employed to form a desired image, and the pattern on each template may be monochrome or polychrome.
The templates may be planar, or they may be of a curved shape, such as cylindrical, domed or ovular.
Successive desired images may be formed by providing a number of sets of separate templates successively moveable into predetermined positions and/or orientations relative to each other. Such templates might be formed in a number of loops or strips, the indexing movement of which provides a succession of images. Such an arrangement is particularly suitable for an advertising display and the concept of forming successive desired images may be employed to create animated films.
Each set of templates may incorporate more than one desired image, the separate images being formed by changing the relative positions and/or orientations of the templates. Moreover sets of templates may be arranged so that whereas it is only possible to discern all of the desired images when in possession of the complete set of templates it is possible to discern some of the desired images when in possession of only part of the set of templates. Such an arrangement is suitable to provide various levels of security, a person being provided with enough of the templates so as to be able to discern those images appropriate to their level of security clearance or authorisation. Alternatively, where a set comprises only two templates there may be provided a single, "master" template and a variety of second templates to be used therewith, each of which display only a part, or a certain number of, the desired image(s).
The patterns on the templates may be monochrome or multi-coloured and the pattern wholly unrelated to the desired image(s) may be a random pattern or another image or picture, such as a background to the desired images; this pattern may be computer generated. The desired image may be monochrome or polychrome.
One template may take the form of the screen of a cathode ray tube or television set so that a first pattern is sent via a signal line, or broadcast, and displayed on the screen. A viewer in possession of a second, transparent or transpicuous, template can then hold this up to the screen so as to superpose the two templates and the patterns thereon so as to form the desired image(s).
The broadcast of the first template may be for a very short, almost subliminal, period, so that the viewer has to record and replay the broadcast, pausing at the instant the first template is displayed and overlaying the second template on the screen so as to view the desired image(s).
Such a system may be used for entertainment, advertising or promotional, or security purposes.
Alternatively, one template may comprise machine readable image such as optically readable data or magnetically stored data for example on a banknote or ticket. A second template may be stored in a computer.
The image or data may be scanned to produce an analogue electrical signal which may then be input to the computer.
The two templates may then be superposed or juxtaposed by the computer.
The invention will now be described by way of example and with reference to the accompanying drawing(s) in which: Figure 1A shows a first monochrome patterned template forming part of a device embodying the invention; Figure 1B shows a second monochrome patterned template forming part of a device embodying the invention; Figure 2 shows the monochrome desired image formed by superimposing the patterned templates shown in Figures 1A and 1B; Figure 3 shows a display apparatus incorporating a device embodying the invention, and Figure 4 shows an embodiment of the invention for displaying a series of images.
Figures 1A and 1B show two monochromatically patterned templates 1, 3 forming a promotional display device in accordance with the present invention. Both templates 1, 3 are provided with a monochrome pattern, one of which is random and the other of which bears a desired image encrypted by subtracting from the desired image components of the random pattern such that the desired image is unrecognisable from the template. The patterns on both templates comprise a plurality of spaced monochrome pattern elements with a mass of irrelevant detail surrounding the desired image in order to disguise completely the image.
By superimposing the two patterned templates so that certain elements of both patterns are placed in juxtaposition, as shown in Figure 2, the desired image, in this case a monochrome promotional message indicating that a customer has not won a prize, becomes apparent.
One of the templates 1, 3 is formed of a transparent material so that the pattern on the other template 3, 1 can be seen therethrough. The patterns are formed by a suitably accurate and high-definition process such as silk-screen or a photolithographic process, the patterns consisting of elements such as dots, lines, marks, symbols of the like, or three-dimensional forms (not shown).
In the embodiment described above, the desired image is produced by a juxtaposition of pattern elements when the templates are superposed. It will be appreciated that a desired image may also be produced by the superposition of pattern elements. For the sake of illustration, the spaces between pattern elements will hereinafter be termed 'white'. The superposing of a red element over a green element (or vise versa), for example, will produce an element having a dark brown/black colour. Such an element will stand out from the surrounding background, whether that background be white (i.e. an area where white is superposed on white), red (white on red, red on white or red on red) or green (white on green, green on white or green on green) so as to produce a dark brown/black desired image.
It will also be appreciated that a desired image may be monochromatic or polychromatic, that such images may be formed as described above or by a combination of the superposition and the juxtaposition of pattern elements, and that the pattern on each template may be polychromatic or, if it is monochromatic, each template in a set may be of a different colour. The use of coloured patterns further disguises the desired image(s), and is more eyecatching when used in a sign, novelty article or the like.
Figure 4 shows a pair of templates 5, 7 forming a display apparatus. One template 5 is driven by a motor 9 so as to rotate relative to the other template 7. As the template 5 moves into certain positions relative to the other template 7 the desired images are formed. Means (not shown may be provided to stop the motor 9 for a short while each time a desired image is formed so that the desired image can be studied before the motor begins rotating the template 5 again and the desired image dissolves. Whilst the template 5 is rotating the interaction of the patterns on the two templates 5, 7 creates an ever-changing and eye-catching display.
Lighting (not shown) can be provided to backlight the display and the desired image(s). The template 7 is transparent and the other template 5 may be opaque, transparent, semi-transparent or translucent. The patterns on the templates 5, 7 may be formed of dots, lines etc., or, where both are transparent, the patterns could be in the form of polarisation patterns such that the appearance of a desired image is highlighted as the polarising filters align and the amount of light transmitted therethrough is suddenly increased/decreased.
Figure 4 shows a number of templates 11 formed on two loops 13, 15. The outermost loop 13 is transparent so that the patterns on the inner loop 15 can be seen when the templates 11 are superposed. The inner loop 15 could also be transparent, or semi-transparent or translucent, so that the desired image(s) can be illuminated from behind so as to make an eye-catching display, such as in an advertisement or sign. Means (not shown) are provided for indexing the loops so that the appropriate templates thereon are superposed so as to represent a succession of desired images.
The examples described above are not exhaustive and numerous alternatives will be apparent to those skilled in the art. For example, the patterns may be in colour or monochrome, one pattern may be totally random or it may be an image, or picture, in the form of a background to the desired image, so long as it is wholly unrelated thereto, and the templates may be curved as well as planar. Each set of templates may form one or more desired images.
It will be apparent to those skilled in the art that the pattern which is wholly unrelated to any desired image could be generated by computer. Where that pattern is itself an image, or picture, similar means may be used so as to encrypt the desired image(s) in dependence on the pattern.
Devices embodying the present invention have many applications, such as advertising, promotion, education, the encryption of information for use as a security pass, for example, or as novelty articles, games, puzzles or the like. In one example of the use of the invention as a security device a first template comprises machine readable data such as optically or magnetically readable data for example on a banknote or ticket and a second template is stored in a computer. When the first template is scanned an analogue electrical signal is produced and is input to the computer. The computer then superposes or juxtaposes the two templates to form the desired image.
Moreover, the invention may be employed so as to form a succession of desired images to create an animation effect, for example to produce an animated film. One template may be broadcast and displayed on a television screen so that a viewer with a matching second template may view, or form, the desired image(s).

Claims (24)

1. A device for displaying at least one image comprising a set of at least two patterned templates, at least one of the templates being at least partially pervious to vision, the templates being movable independently of each other into predetermined positions and/or orientation(s) with respect to each other in superposed relationship so that the combined patterns form the image(s), wherein the pattern on at least one template is wholly unrelated to any image(s) and wherein the pattern(s) on the other template(s) represents the image(s) in an incomplete and unrecognisable form.
2. A device as claimed in claim 1 wherein at least one template is at least partially transparent.
3. A device as claimed in claim 1 or 2 wherein each pattern comprises spaced pattern elements, the image(s) being formed by the juxtaposition of predetermined pattern elements when the templates are superposed.
4. A device as claimed in claim 1 or 2 wherein each pattern comprises spaced pattern elements, the image(s) being formed by the superposition of predetermined pattern elements when the templates are superposed.
5. A device as claimed in claim 1 or 2 wherein each pattern comprises spaced pattern elements, the image(s) formed by a combination of the superposition and juxtaposition of predetermined pattern elements when the templates are superposed.
6. A device as claimed in any preceding claim wherein the pattern on the template which is wholly unrelated to any image is a random pattern.
7. A device as claimed in any of claims 1 to 5 wherein the pattern on the template which is wholly unrelated to any image is a picture or image.
8. A device as claimed in any preceding claim comprising means for moving at least one template in relation to the other template(s) in order to bring the template into the predetermined position(s) and/or orientation(s) in order to form the image(s).
9. A device as claimed in claim 8 comprising means for momentarily interrupting the movement of the or each template when a image is formed.
10. A device as claimed in any preceding claim wherein the templates are planar.
11. A device as claimed in any preceding claim comprising a number of templates successively moveable into predetermined positions and/or orientations relative to each other in order to form a succession of images.
12. A device as claimed in any preceding claim wherein the patterns consist of dots, lines, marks, symbols, polarising materials or three-dimensional forms.
13. A device as claimed in any preceding claim wherein the patterns are monochrome.
14. A device as claimed in any of claims 1 to 12 wherein the patterns are polychrome.
15. A device as claimed in any preceding claim wherein the pattern on the template which is wholly unrelated to any image is computer-generated.
16. A device for encrypting at least one image comprising a set of at least two templates, at least one of the templates being partially pervious to vision, means for applying a pattern which is unrelated to any image to a first template, means for reducing the image(s) to an encrypted pattern in dependence on said pattern on said first template, and means for applying the encrypted pattern to a second template.
17. A device for decrypting at least one encrypted image comprising a set of at least two templates, at least one of the templates being partially pervious to vision, including a first template bearing a pattern which is unrelated to any decrypted image, and a second template bearing a pattern related to the encrypted image, wherein alignment of the templates into predetermined position(s) and/or orientation(s) with respect to each other in superposed relationship combines the patterns on the first and second templates to decrypt the encrypted image.
18. A device according to claims 16 or 17 in which the encrypted pattern is formed by subtracting from the image components thereof in dependence on the pattern on the first template.
19. A device substantially as hereinbefore described with reference to the accompanying drawings.
20. A method of encrypting at least one image comprising reducing the image(s) to an incomplete and unrecognisable pattern by subtracting from the image(s) components thereof in dependence on at least one other pattern, said other pattern being wholly unrelated to the image(s).
21. A method of encrypting at least one image comprising reducing the image(s) to an incomplete and unrecognisable pattern on at least one template by subtracting from the image(s) components thereof in dependence on the pattern on at least one other template, the pattern on the said other template being wholly unrelated to the image(s).
22. A method of displaying at least one image comprising reducing the image(s) to an incomplete and unrecognisable pattern on at least one template by subtracting from the image(s) components thereof in dependence on the pattern on at least one other template, the pattern on said other template being wholly unrelated to the image(s), at least one of the templates being at least partially pervious to vision and moving the templates into predetermined position(s) and/or orientation(s) with respect to each other in superposed relationship so that the combined patterns form the image(s).
23. A method of encrypting at least one image substantially as hereinbefore described.
24. A method of displaying at least one image substantially as hereinbefore described.
GB9510707A 1994-05-31 1995-05-26 Improvements in and relating to the display of information Expired - Fee Related GB2289973B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9510707A GB2289973B (en) 1994-05-31 1995-05-26 Improvements in and relating to the display of information

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9410873A GB9410873D0 (en) 1994-05-31 1994-05-31 Improvements in and relating to the display of information
GB9422779A GB9422779D0 (en) 1994-05-31 1994-11-11 Improvements in and relating to the display of information
GB9510707A GB2289973B (en) 1994-05-31 1995-05-26 Improvements in and relating to the display of information

Publications (3)

Publication Number Publication Date
GB9510707D0 GB9510707D0 (en) 1995-07-19
GB2289973A true GB2289973A (en) 1995-12-06
GB2289973B GB2289973B (en) 1996-05-29

Family

ID=27267208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9510707A Expired - Fee Related GB2289973B (en) 1994-05-31 1995-05-26 Improvements in and relating to the display of information

Country Status (1)

Country Link
GB (1) GB2289973B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999027515A1 (en) * 1997-11-21 1999-06-03 Nikolaos Tsakonas Partial or total movement of the subjects of advertising boards, panels and tent-boards
EP1139662A2 (en) * 2000-03-28 2001-10-04 Sony Corporation Communication service method and communication apparatus thereof
WO2011033246A2 (en) * 2009-09-17 2011-03-24 Yates Howard J A device and method for obfuscating visual information
DE102013016640A1 (en) * 2013-10-04 2015-04-09 Giesecke & Devrient Gmbh Method for presenting information

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745966A (en) * 1971-11-26 1973-07-17 Gen Electric Four-quadrant indicator employing moire effect
GB1333579A (en) * 1969-11-17 1973-10-10 Photo Motion Corp Method and apparatus for simulating motion
GB2163999A (en) * 1984-08-15 1986-03-12 Harley Bishop Pictographic display device
GB2230228A (en) * 1989-02-02 1990-10-17 Somerset Galleries Ltd Novelty article

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1333579A (en) * 1969-11-17 1973-10-10 Photo Motion Corp Method and apparatus for simulating motion
US3745966A (en) * 1971-11-26 1973-07-17 Gen Electric Four-quadrant indicator employing moire effect
GB2163999A (en) * 1984-08-15 1986-03-12 Harley Bishop Pictographic display device
GB2230228A (en) * 1989-02-02 1990-10-17 Somerset Galleries Ltd Novelty article

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6487801B1 (en) 1997-11-21 2002-12-03 Goboards International, S.A. System and method for displaying advertising
WO1999027515A1 (en) * 1997-11-21 1999-06-03 Nikolaos Tsakonas Partial or total movement of the subjects of advertising boards, panels and tent-boards
AU748055B2 (en) * 1997-11-21 2002-05-30 Nikolaos Tsakonas Partial or total movement of the subjects of advertising boards, panels and tent-boards
US8621039B2 (en) 2000-03-28 2013-12-31 Sony Corporation Communication service method and communication apparatus thereof
EP1139662A3 (en) * 2000-03-28 2002-12-18 Sony Corporation Communication service method and communication apparatus thereof
US7752078B2 (en) 2000-03-28 2010-07-06 Sony Corporation Communication service method and communication apparatus thereof
US8156014B2 (en) 2000-03-28 2012-04-10 Sony Corporation Communication service method and communication apparatus thereof for transmitting advertisements in a private communication environment
EP1139662A2 (en) * 2000-03-28 2001-10-04 Sony Corporation Communication service method and communication apparatus thereof
US9430780B2 (en) 2000-03-28 2016-08-30 Sony Corporation Communication service method and communication apparatus thereof
US10142703B2 (en) 2000-03-28 2018-11-27 Sony Corporation Communication service method and communication apparatus thereof
US10671153B2 (en) 2000-03-28 2020-06-02 Sony Corporation Communication service method and communication apparatus thereof
WO2011033246A2 (en) * 2009-09-17 2011-03-24 Yates Howard J A device and method for obfuscating visual information
WO2011033246A3 (en) * 2009-09-17 2011-05-12 Yates Howard J A device and method for obfuscating visual information
US9033245B2 (en) 2009-09-17 2015-05-19 Tento Technologies Ltd. Device and method for obfuscating visual information
DE102013016640A1 (en) * 2013-10-04 2015-04-09 Giesecke & Devrient Gmbh Method for presenting information

Also Published As

Publication number Publication date
GB9510707D0 (en) 1995-07-19
GB2289973B (en) 1996-05-29

Similar Documents

Publication Publication Date Title
US7516891B2 (en) Ballot integrity systems
EP0740282B1 (en) Device and method for producing lenticular images with motion
US5034982A (en) Lenticular security screen production method
US5488664A (en) Method and apparatus for protecting visual information with printed cryptographic watermarks
CN101561852B (en) Display method and display device
CA2275397A1 (en) Method and device for the three-dimensional representation of information
EP0722391A1 (en) A composite image arrangement
WO2003071491A2 (en) Secret-ballot systems with voter-verifiable integrity
KR20130087017A (en) Method for the authentication and/or identification of a security item
EP0875870A3 (en) Gaming machine
CN103443828A (en) Method of authenticating and/or identifying a security article
US5101296A (en) Light-polarizing mosaic pair
JPS58184929A (en) Stereoscopical device
GB2289973A (en) Display of information
US5799939A (en) Anamorphoses for games, education and promotions
EP0260815A1 (en) Secure encoding method and associated products
WO1995033250A1 (en) Information display
JP2005250458A (en) Image display device and its usage
US9792449B2 (en) Cryptic notes and related methods
JP2011107605A (en) Secret sharing scheme of character information, and printed matter used for the same
KR20080007075A (en) Visual ad system of brand shape
US4306226A (en) Animation of visual displays and apparatus effecting the animation
US20070279538A1 (en) Display For Gaming Device
GB2306835A (en) Display device with three dimensional effect
US20070109655A1 (en) Electrically-responsive lenticular display apparatus and method

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100526