WO2018111186A1

WO2018111186A1 - Unmanned display assembly with method and computer readable medium

Info

Publication number: WO2018111186A1
Application number: PCT/SG2016/050605
Authority: WO
Inventors: Peter Marek ZMIJEWSKI; Scott Matthew DOWDELL
Original assignee: Zmijewski Peter Marek; Dowdell Scott Matthew
Priority date: 2016-12-14
Filing date: 2016-12-14
Publication date: 2018-06-21

Abstract

Unmanned display assembly with method and non-transient computer readable medium in use employing unmanned display assembly are provided. The assembly comprises a plurality of display pixels (20) for displaying messages/images. Each pixel comprises a dedicated drone (20). the pixels are detachably attached together in the assembly by attachment means (25) such that while the assembly is in a fluid medium, upon providing electronic instructions at least one pixel can detach from the assembly by the dedicated drone and undergo physical movement relative to the assembly, the physical movement being to change the orientation and/or the position of the pixel. The present invention provides a disruptive unmanned display assembly with method and computer readable medium, in terms of effectiveness and impact of display.

Description

UNMANNED DISPLAY ASSEMBLY WITH METHOD AND COMPUTER

READABLE MEDIUM

FIELD OF INVENTION

The present invention relates to the field of displays and particularly to the displays using unmanned vehicles (drones).

BACKGROUND OF THE INVENTION

Unmanned aerial vehicle (UAV) or drones are being widely used in recent times for several applications. Drones enable their usages in swarms such as for orchestra accompanied drone light displays, choreographed light displays and the kind. Isolated drones are also used to carry weapons and when fitted with cameras are useful in remotely capturing pictures of interest, such as for surveillance/military applications. Drones are also being used for law enforcement, fire-fighting, non-military security work, aerial photography, delivery of packages to recipients from the shipping centre and the kind.

US patent publication number US2016214713 (Al ) describes a drone equipped with spotlights, LEDs that change color, laser lights, strobe lights, multiple speakers, a video display screen, a video camera, a video projector, a satellite/GPS antennae, a digital music storage device for playing music from the multiple speakers, a voice recording and playback device connected to the multiple speakers, at least one battery power source and a computer control module (CPU) for wireless communication with a remote control device.

PCT publication number WO2015199535 (Al ) describes a remotely controlled airborne drones, for displaying 2D or 3D messages and/or images by an attached display means. The display means may have LED's, OLED's or LCD based means or DLP and/or laser projection means. The display can be remotely controlled.

The present invention provides a disruptive unmanned display assembly and method in terms of effectiveness and impact of display. SUMMARY

In a first aspect of the invention, unmanned display assembly for navigating in a fluid medium is provided. The assembly comprises a plurality of display pixels for displaying messages/images, wherein each pixel comprises a dedicated drone, the pixels being detachably attached together in the assembly by attachment means such that while the assembly is in a fluid medium, upon providing electronic instructions at least one pixel can detach from the assembly by the dedicated drone and undergo physical movement relative to the assembly, the physical movement being to change orientation and/or position of the at least one pixel.

The characterising feature is advantageous to draw better attention of the viewer by the physical movement of the pixel(s) as the pixel may change the orientation and/or the position by popping inwards or outwards with regards to the assembly. This feature when programmable with various messages and/or images can be graphically/ pictorially delivered to the viewer with better visibility and with crossing of the language barrier. The feature of the pixels being detachably attached together provides better stability and clarity of the images/messages than when the pixels are navigating in the fluid medium independently.

According to an embodiment, the navigation of the assembly is effected by at least one dedicated drone. Advantageously with this feature the assembly does not need a separate drone for its navigation, hence cuts down on cost and complexity of the assembly.

According to an embodiment, the assembly further comprises a common drone disposed on the assembly for effecting the navigation of the assembly. This feature is advantageous when the dedicated drones are efficient enough only to effect the physical movements of the individual pixels and the common drone is used for navigating the assembly as a whole.

According to an embodiment, the assembly is capable of navigating in the fluid medium with rotation along any axis of the assembly. This feature advantageously adds more variation in the display as more number of sides of the assembly can be useful for displaying the messages/images. According to an embodiment, the assembly further comprises audio means for providing audio output. Advantageously this embodiment provides display of the images/messages in audiovisual mode for a better communication with the viewers than when with only visual mode or only audio mode.

According to a preferred embodiment, the pixels are shaped as cubes. Advantageously this feature helps to accommodate the pixels in the most compact manner without gaps in the assembly. Besides, the individual pixels may be attached together in the assembly by the attaching means in any orientatio as all sides of the cube are identical.

According to an advantageous embodiment, at least one pixel comprises a pin-hole on at least one face for forming an image on the interior surface of the opposite face, the opposite face being non-opaque such that the image is visible on the exterior surface of the opposite face. Electronics means may be provided for capturing the image. The assembly may comprise a pin-hole on a first face of a pixel to form an image of an object facing the first face; and first electronic means for electronically transferring the image onto a second face of any other pixel. This feature helps in capturing images without the use of lens, as the lens adds to the weight and complexity of the assembly. Pinhole cameras with CCDs (charge coupled devices) may be used for surveillance because they are difficult to detect. Advantageously, the electronic means helps to transfer the image for viewing in any preferred direction. According to an embodiment, first and second assemblies are provided wherein at least one first pixel in the first assembly comprises a pin-hole camera for optically capturing an object to wirelessly form an image on at least one second pixel in the second assembly, the image being formable by electronic means. In the first assembly the pinhole camera may be replaced by a lens based camera to enable focussing on particular objects, though the use of the lens is at the cost of extra weight and complexity. This advantageous embodiment demonstrates how an assembly navigating in a location closer to the object can wirelessly send out images for viewing at a different and preferred location.

According to yet another embodiment, the assembly may further comprise an invisible cloak layer on at least one face of at least one pixel such that an object when located at a predetermined distance behind the invisible cloak layer remains invisible from the front side of the at least one pixel with at least one of the two conditions being applicable: a) the invisibility being under daylight and b) the invisibility being due to the object being undetectable by surveillance devices in the dark. Such embodiments are advantageous particularly for military applications where a military soldier may bag pack a wireless power supply board and be surrounded by these assemblies that have cloak layer. He will be invisible from others. As this person (or object) moves, the assemblies can follow this person (or object).

According to yet another embodiment, at least a part of the operation of the assembly is controllable by wireless instructions, the rest being controllable by on-board electronic controller. Advantageously this feature provides a balance distribution of the load and complexity. Lighter assemblies are preferable for more efficient navigation with lesser load on the drones and lesser on board power consumption.

According to a preferred embodiment, the attachment means is an electromagnetic device. This feature helps easy attachment and detachment of the pixels to and from the assembly by providing the suitable electrical signals to magnetise or demagnetise the devices respectively, as and when desired to enable the physical movements of the pixels.

According to a preferred embodiment, at least in part the assembly is powered by resonant energy transfer means based on oscillating magnetic fields. Advantageously, this feature helps wireless powering of the assembly such that the assembly can easily navigate to regions that are not easily accessible.

According to a preferred embodiment, the assembly further comprises on-board rechargeable battery that is wirelessly chargeable by the resonant energy transfer means. Advantageously, with this feature the assembly need not have to be grounded for recharging of the on-board batteries. In addition, the assembly can continue to navigate and display images/messages even when not within the network grid of the wireless powering system.

According to a preferred embodiment, the messages/images are related to any one from the group consisting of: advertisement, education, warning, signalling, entertainment, military application, and information.

According to a preferred embodiment, the messages/images at least in part are digital for the known benefits of the technology. In a second aspect of the invention, method of displaying messages/images employing the unmanned display assembly as defined under the first aspect is provided. The method comprising navigating the assembly in a fluid medium; and while the assembly is in a fluid medium, providing electronic instructions to at least one dedicated drone to detach the corresponding pixel from the assembly and undergo physical movement relative to the assembly, the physical movement being to change orientation and/or position of the at least one pixel; and enabling the corresponding pixel to display messages/images. The method may further comprise effecting navigation of the assembly by at least one dedicated drone. Herein the assembly further comprises a common drone disposed on the assembly, the method comprising effecting navigation of the assembly by the common drone. The method may further comprise navigating the assembly in the fluid medium with rotation along any axis of the assembly. Advantageously, the method may further comprise the step of employing audio means disposed in the assembly to provide audio output. The method may further comprise employing at least one pixel comprising a pin-hole on a first face; and forming an image on the interior surface of the opposite face of the first face, the opposite face being non-opaque such that the image is visible on the exterior surface of the opposite face. According to an alternate embodiment, the method may comprise transferring electronic image onto a face of any other pixel. The method may comprise controlling at least a part of the assembly with wireless instructions; and controlling the rest by on-board electronic controller. The method may comprise employing electromagnetic device as the attachment means. The method may comprise powering the assembly at least in part by resonant energy transfer means based on oscillating magnetic fields. The assembly may further comprise on-board rechargeable battery, the method comprising: wirelessly charging the rechargeable battery by the resonant energy transfer means. The method may be displaying the messages/images which at least in part are digital.

In a third aspect of the invention, non-transient computer readable medium in use employing the unmanned display assembly as defined under the first aspect is provided. The medium comprising stored computer- eadable instructions for causing a computer processor to perform operations comprising: navigating the assembly in a fluid medium; while the assembly is in a fluid medium, providing electronic instructions to at least one dedicated drone to detach the corresponding pixel from the assembly and undergo physical movement relative to the assembly, the physical movement being to change orientation and/or position of the at least one pixel, enabling the corresponding pixel to display messages/images. The operations may further comprise effecting navigation of the assembly by at least one dedicated drone. Wherein the assembly further comprises a common drone disposed on the assembly, the operations further comprise effecting navigation of the assembly by the common drone. The operations may further comprise navigating the assembly in the fluid medium with rotation along any axis of the assembly. The operations may further comprise providing audio output by audio means disposed in the assembly. The operations may further comprise enabling at least one drone being attached to at least one pixel to effect the physical movement. According to an embodiment, the medium employs an optically captured object by a pin-hole disposed on a first face of the pixel to form an image, wherein the operations further comprise electronically transferring the image onto a second face of any other pixel, by electronic means. The operations may further comprise controlling at least a part of the assembly with wireless instructions; and controlling the rest by on-board electronic controller. The operations may further comprise controlling the physical movement where the attachment means is an electromagnetic device. The operations may further comprise at least in part powering the assembly by resonant energy transfer means based on oscillating magnetic fields. Wherein the assembly further comprises on-board rechargeable battery, the operations further comprise wirelessly charging the rechargeable battery by the resonant energy transfer means. The operations further comprise displaying the messages/images which at least in part are digital. The operation may comprise transferring electronic image onto an exterior surface of any other pixel.

The advantages related to the second and third aspects along with their embodiments correspond to those described under the first aspect and the embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

In the following drawings, same reference numbers generally refer to the same parts throughout. The drawings are not to scale, instead the emphasis is on describing the concept.

Fig. l shows a perspective view of the unmanned display assembly with the wireless power supply board, according to an embodiment of the invention. A drone is attached to an inner surface of every cubic pixel. The corners of the pixels are provided with electromagnetic attachment means.

Fig.2 shows a perspective view of the embodiment at Fig. 1 , with a few detached pixels that have undergone physical movement relative to the assembly.

Fig.3 shows a perspective view of an embodiment of one cubic pixel of the preceding figures, with the drone (not in operation).

Fig.4 shows a perspective view of an embodiment at Fig.3, with the drone being in operation.

Fig. 5 shows a perspective view of an embodiment of one cubic pixel from the assembly at Fig. l, with the cubic pixel further having a pin-hole in one of the faces.

Fig. 6 shows a perspective view of two assemblies according to an embodiment, the first facing objects and the second displaying the image by electronic means.

Fig. 7 shows a perspective view of a pixel according to an embodiment, the pixel being provided with an invisible cloak layer on one face.

Fig. 8 shows a perspective view with four assemblies surrounding an object according to an embodiment, wherein one assembly has the exterior faces provided with invisible cloak layer to render the object invisible from that direction.

DETAILED DESCRIPTION OF THE INVENTION

The following description presents several preferred embodiments of the present invention in sufficient detail such that those skilled in the art can make and use the invention.

A preferred embodiment of the unmanned display assembly 100 and the operation is described herein with reference to Figs. 1-8.

As illustrated in the embodiment at Fig.l, the assembly 100 bears stacked layers of display pixels 10. When the assembly 100 is in use, the display pixels 10 display messages/images. In this embodiment, the cubic pixels 10 are each provided with a dedicated drone 20. The WiTricity powering system 15 provides wireless power to the assembly 100. It may be appreciated that any other wireless powering system in the art may be used in alternate embodiments. An embodiment of the attachment means is shown, where the attachment means is an electromagnetic device 25 as provided in every corner of the cubic pixel 10. As shown, the pixels 10 are attached together in the assembly 100 by the electromagnetic devices 25. By controlling the electric signals to these electromagnetic devices 25, any pixel 10 can be magnetically attached with the adjacent pixels 10 as shown in this figure. The electromagnetic devices 25 may be provided at other locations on the pixels 10, if desirable.

As shown in Fig. 2, a few of the pixels 10 are demonstrating exemplary physical movement relative to the assembly 100, the physical movement being effected by the dedicated drone 20 inside each of these pixels 10. It may be understood that a pixel 10 needs to first get electromagnetically detached from the adjacent pixels 10 and thereafter the dedicated drone 20 inside the pixel 10 is free to effect any desired physical movement relative to the assembly 100, in order to enhance the display mechanism. While the assembly 100 is navigating in the fluid medium, upon providing electronic instructions the selected pixels 10 can effect physical movement so as to change orientation and/or position relative to the assembly 100. Fig. 3 illustrates an embodiment of the individual pixel 10. The dedicated drone 20 here is not in operating condition. Fig. 4 illustrates the dedicated drone 20 in the pixel 10 when in operating condition. in this embodiment, the dedicated drone 20 in each pixel 10 is also capable of coordinating with other dedicated drones 20 in other pixels 10 to navigate the assembly 100 as a whole tlirough any fluid medium. According to an alternate embodiment (not shown) a common drone may also be disposed on the assembly 100 for navigation of the assembly 100 as a whole, so that the dedicated drone 20 with each pixel 10 is useful for effecting only the physical movement of the pixel 10.

According to an embodiment of the invention, one or more selected cubic pixels 10 are provided with a pin-hole 30 each in one of the faces, as shown in Fig.5. As shown, the pin-hole 30 may form an image 40 of an object 35 on the interior surface of the opposite face. When the opposite face is non-opaque, the image 40 is visible on the exterior surface of the opposite face (not shown). This feature helps in capturing images 40 without the use of lens, the latter adding to the weight and complexity of the assembly 100. Pinhole cameras with CCDs (charge coupled devices) are sometimes used for surveillance because they are difficult to detect. Other applications are also possible. According to alternate embodiments (not shown), cameras with lens systems may be provided on the pixels 10 for recording images 40 of objects 35 located outside the assembly 100. The a pin-hole 30 on a first face of a pixel 10 may optically capture an object 35 facing the first face to form an image 40 and electronic means may electronically transfer the image 40 onto a second face of any other pixel 10.

Fig.6 illustrates another embodiment with the pinhole cameras 30 in multiple pixels 10 in one assembly 100. The real time objects 35 are captured by this assembly 100 and by an electronic means (not shown) are projected in another assembly 100 for viewing. The images 40 may be in video/still forms. A blocking plate 45 is shown to be placed between the two assemblies 100. This blocking plate 45 merely indicates that there is no direct optical path between the two assemblies 100 to convert the objects 35 to images 40 directly. This conversion needs to be performed electronically. According to other embodiments, the pinhole cameras 30 may be replaced by other forms of lens based cameras as well at the cost of additional weight and complexity.

Fig 7 shows an embodiment where a face of a pixel 10 is layered with an invisibility cloak 50 that can make small objects, animals and the like to be invisible from sight in daylight and even make them undetectable to surveillance devices in the dark. The cloak layer 50 when around an object uses precisely angled blocks of glass to bend light around the object in the centre (not shown), making it invisible and allowing one to see only what is behind it. This feature could be advantageous particularly for defence and security applications. The following link may be referred to for further details on the invisibility cloak 50 layer. The theories of invisibility cloak are well known in the art, hence not further described here. Invisibility cloak can be layered over the faces of pixels 10 (or assembly 00) that may make other objects in the air invisible. This invisibility cloak layer 50 also hides anything that emits heat, making the object undetectable to the likes of thermal cameras or night vision goggles. As illustrated in Fig. 8, according to an embodiment four assemblies 100 are arranged around an object 35. One of the assemblies 100 is provided with the invisibility cloak 50 on the outer faces of the pixels 10. Thus the object 35 when located at a predetermined distance from the invisibility cloak 50 is visible as shown by the representation 55 through all the other three assemblies 100 with transparent faces but not through the assembly with the outer faces layered with the invisibility cloak layer 50. The person (object) 35 may bag pack a wireless powering board 15 and be surrounded by these assemblies 100 that have the invisibility cloak layer 50. The object 35 will then be invisible from others. As this person (or object 35) moves, the assemblies 100 can follow this person (or object 35).

With the arrangement described above, the whole assembly 100 may be rotated along any axis during the course of the display by the coordinated flights of the dedicated drones 20 inside the pixels 10. In this embodiment, the dedicated drones 20 can regulate the navigation of the assembly 100 as a whole and also provide the physical movement of the individual pixels 10 as desired, relative to the assembly 100.

In this context, the term navigation of the assembly 100 in the fluid medium indicates any kind of movement of the assembly 100 through the fluid medium, including maintaining the assembly 100 to be suspended in the fluid medium, rotating the assembly 100 along any axis and the kind.

The fluid medium may be any medium of interest for any specific reason through which the drones 20 can cause the assembly 100 to navigate. Other than air, the fluid medium may be water or any other medium that is suitable for the drones 20 to propel through.

Any suitable wireless powering system other than that from WiTricity may equally be used. On board sources of power to the assembly (not shown) may also be provided.

The pixels 10 may be arranged only at the periphery of the assembly 100 with a hollow interior. However, the assembly 100 may also accommodate inner pixels 10 in the interior so that during display the inner pixels 10 may exit the assembly 100 after the outer pixels 10 exit. Similarly the inner pixels 10 may re-enter the assembly 100 before the outer pixels 10 re-enter. Alternatively, the inner pixels 10 may re-enter the assembly 100 after the outer pixels 10 reenter so that there is a swap in their positions. Any combination of the physical movements of the pixels 10 may be possible. Use of the electromagnetic device 25 helps easy attachment and detachment of the pixels 10 to and from the assembly 100 by using the electrical signals to magnetise and demagnetise the electromagnetic devices 25 respectively as and when desired to enable the physical movements to the pixels 10. The whole assembly 100 is also rotatable along any axis such as to display messages/images on the other faces as well.

In this embodiment, the pixels 10 are shown to be shaped as cubes, though it may be appreciated that other shapes of convenience may equally be used. Advantageously this feature helps to accommodate the pixels 10 in the most compact manner without gaps in the assembly 100. Besides, individually the pixels 10 may be attached together in the assembly by the electromagnetic devices 25 in any orientation as all sides of the cube are identical. The pixels 10 need not be shaped as enclosures.

According to other embodiments, other suitable mechanisms in the art may be used as the attachment means, which can be operated so as to cause the detachment of selected pixels 10 from the assembly 100 and re-attachment of the same pixels 10 back to the assembly 100.

According to other embodiments, other shapes and sizes of the assembly 100 may equally be used. The matrix shown in Figs 1 and 2 has 3x3x3 cubic pixels 10. According to other embodiments, different sizes of the matrix with varying numbers of pixels 10 may be provided.

According to other embodiments, the dedicated drones 20 may as well be disposed in selected pixels 10 instead of being disposed in all of them. However, only those selected pixels 10 will then be capable of effecting the physical movements relative to the assembly 100.

According to other embodiments, other methods in the art for providing wireless power to the assembly 100 is equally possible. The operation of the display assembly 100 may be partly controllable by wireless instructions, the rest being controllable by on-board electronic controller. However, this is not a limitation. Any other arrangement is equally applicable. Advantageously this feature provides a balanced distribution of the load and complexity. Lighter assemblies 100 are preferable for more efficient navigation with lesser load on the drones 20 and lesser power consumption particularly with on board power supply. The display assembly 100 at least in part may be wirelessly powered by WiTricity, by the principle of resonant energy transfer based on oscillating magnetic fields. Each dedicated drone 20 in the pixel 10 may preferably have its own rechargeable battery (not shown), so that there is no need to change the battery over time or ground the assembly 100 for recharging. If these pixels 10 flew out of the WiTricity grid/area, the assembly 100 can still hold itself in the fluid medium. The rechargeable battery may be recharged by WiTricity.

The present invention does not limit the distance by which the pixels 10 as detached from the assembly 100 can physically move away from the assembly 100 before re-attaching to the assembly 100.

The assembly 100 and the method of operating the assembly 100 has thus been described in sufficient detail.

Non-transient computer readable medium (not shown) is needed, to operate the unmanned display assembly 100 whether remotely or via on board instructions or both. The medium comprises stored computer- readable instructions for causing a computer processor to control the dedicated drone 20 to navigate the assembly 100 in any fluid medium. While the assembly 100 is in the fluid medium, the computer readable medium provides electronic instructions to the selected pixels 10 to detach from the assembly 100 and undergo the physical movement relative to the assembly 100. The physical movement is such as a change in orientation and/or position of the pixel 10, thereafter enabling the pixel 10 to display messages/images. The operations may effect navigation of the assembly 100 by at least one dedicated drone 20 or effect navigation of the assembly by the common drone. The operations may further include wireiessly charging the on-board rechargeable battery by the resonant energy transfer means such as by WiTricity powering network so that the assembly 100 can continue the display operation and navigation without having to get grounded for charging. However, any other network for wireless powering may equally be used.

According to an embodiment, the assembly 100 may be provided with audio means (not shown) for providing audio output. The audio output may be provided during the display. Advantageously this embodiment provides display of the images/messages in audio-visual mode for a better communication with the viewers than when with only visual mode or only audio mode. According to alternate embodiment, the audio output may be provided even without the display.

The physical movement of the pixels 10 may be programmed desirably to draw better attention of the viewer as the pixels 10 may change the orientation and/or the position by popping inwards or outwards with regards to the assembly 100. This feature when programmable with various messages and/or images can be graphically/ pictorially delivered to the viewer with better visibility and with crossing of the language barrier. Alternatively, the pixels 10 when attached to the assembly 100 provide better stability and clarity of the images/messages than when the pixels 0 are navigating in the fluid medium independently. Thus, the dedicated drone 20 provided with each pixel 10 to effect the individual physical movement of the pixels 10 gives more flexibility in programming and displaying of the message and /or image. To exploit the benefit of both the features, selected pixels 10 may deliver the physical movements and the rest of the pixels 10 may be used to display images/messages with better clarity.

The display assembly 100 may be used for displaying any messages/images of interest such as those related to advertisement, education, warning, signalling, entertainment, military application, and information. The messages/images may be digital or non-digital or a mixture of both.

From the foregoing description it will be understood by those skilled in the art that many variations or modifications in details of design, construction and operation may be made without departing from the present invention as defined in the claims. The term, 'non-transitory' in the claims indicates 'enduring or long-lived' and potentially excludes computer-readable media that store data only for short periods of time and/or only in the presence of power, such as register memory, processor cache and random access memory (RAM).

Claims

1. Unmanned display assembly for navigating in a fluid medium, the assembly comprising: a plurality of display pixels for displaying messages/images, wherein each pixel comprises a dedicated drone, the pixels being detachably attached together in the assembly by attachment means such that while the assembly is in a fluid medium, upon providing electronic instructions at least one pixel can detach from the assembly by the dedicated drone and undergo physical movement relative to the assembly, the physical movement being to change at least one feature from the group consisting of:

a) orientation of the at least one pixel, and

b) position of the at least one pixel.

2. The assembly according to claim 1 wherein the navigation of the assembly is effected by at least one dedicated drone.

3. The assembly according to claim 1 further comprising a common drone disposed on the assembly for effecting the navigation of the assembly.

4. The assembly according to claim 1 being capable of navigating in the fluid medium with rotation along any axis of the assembly.

5. The assembly according to claim 1 further comprising audio means for providing audio output.

6. The assembly according to claim 1 wherein the pixels are shaped as cubes.

7. The assembly according to claim 1 wherein at least one pixel comprises a pin-hole on a first face for forming an image on the interior surface of the opposite face, the opposite face being non-opaque such that the image is visible on the exterior surface of the opposite face.

8. The assembly according to claim 7 further comprises electronic means to capture the image.

9. The assembly according to claim 1 further comprising:

a pin-hole on a first face of the pixel to optically capture an object facing the first face to form an image; and

electronic means for electronically transferring the image onto a second face of any other pixel.

10. First and second assemblies according to claim 1 wherein at least one first pixel in the first assembly comprises a pin-hole camera for optically capturing an object to wirelessly form an image on at least one second pixel in the second assembly, the image being formable by electronic means.

1 1. The first assembly according to claim 9, wherein the pinhole camera is replaced by a lens based camera.

12. The assembly according to claim 1 further comprising an invisible cloak layer on at least one face of at least one pixel such that an object when located at a predetermined distance behind the invisible cloak layer remains invisible from the front side of the at least one pixel with at least one of the two conditions being applicable:

a) the invisibility being under daylight and b) the invisibility being due to the object being undetectable by surveillance devices in the dark.

13. The assembly according to claim 1 wherein at least a part of the assembly is controllable by wireless instructions, the rest being controllable by on-board electronic controller.

14. The assembly according to claim 1 wherein the attachment means is an electromagnetic device.

15. The assembly according to claim 1 at least in part being powered by resonant energy transfer means based on oscillating magnetic fields.

16. The assembly according to claim 14 or claim 15 further comprising on-board rechargeable battery that is wirelessly chargeable by the resonant energy transfer means.

17. The assembly according to claim 1 wherein messages/images are related to any one from the group consisting of:

advertisement,

education,

warning,

signalling,

entertainment,

military application, and

information.

18. The assembly according to claim 1 wherein the messages/images at least in part are digital.

19. Method of displaying messages/images, the method employing unmanned display assembly suitable for navigating in a fluid medium, the assembly having a plurality of display pixels for displaying messages/images wherein each pixel comprises a dedicated drone, the pixels being detachably attached together in the assembly by attachment means, the method comprising: navigating the assembly in a fluid medium; and while the assembly is in a fluid medium, providing electronic instructions to at least one dedicated drone to detach the corresponding pixel from the assembly and undergo physical movement relative to the assembly, the physical movement being to change at least one feature from the group consisting of:

a) orientation of the at least one pixel, and

b) position of the at least one pixel; and enabling the corresponding pixel to display messages/images.

20. The method according to claim 19 further comprising:

effecting navigation of the assembly by at least one dedicated drone.

21. The method according to claim 19 wherein the assembly further comprises a common drone disposed on the assembly, the method comprising:

effecting navigation of the assembly by the common drone.

22. The method according to claim 19 further comprising:

navigating the assembly in the fluid medium with rotation along any axis of the assembly.

23. The method according to claim 19 further comprising:

employing audio means disposed in the assembly to provide audio output.

24. The method according to claim 19 flirt her comprising:

employing at least one pixel comprising a pin-hole on a first face; and

forming an image on the interior surface of the opposite face, the opposite face being non-opaque such that the image is visible on the exterior surface of the opposite face.

25. The method according to claim 19 further comprising:

optically capturing an object facing a first face of the pixel by a pin-hole to form an image; and

electronically transferring the image onto a second face of any other pixel, by electronic means.

26. The method according to claim 19 1 employing first and second assemblies, the method further comprising:

optically capturing an object by a pin-hole camera in at least one first pixel in the first assembly; and wirelessly forming an image on at least one second pixel in the second assembly, the image being formable by electronic means.

27. The method according to claim 26, wherein the pinhole camera is replaced by a lens based camera.

28. The method according to claim 19 employing an invisible cloak layer on at least one face of at least one pixel, the method further comprising:

placing an object at a predetermined distance behind the invisible cloak layer; and enabling the object to remain invisible from the front side of the at least one pixel with at least one of the two conditions being applicable:

the invisibility being under daylight and b) the invisibility being due to the object being undetectable by surveillance devices in the dark.

29. The method according to claim 19 comprising the step of:

controlling at least a part of the assembly with wireless instructions; and

controlling the rest by on-board electronic controller.

30. The method according to claim 19 comprising:

employing electromagnetic device as the attachment means.

31. The method according to claim 19 comprising:

powering the assembly at least in part by resonant energy transfer means based on oscillating magnetic fields.

32. The method according to claim 30 or claim 31 wherein the assembly further comprises on-board rechargeable battery, the method comprising:

wirelessly charging the rechargeable battery by the resonant energy transfer means.

33. The method according to claim 1 comprising:

displaying the messages/images which at least in part are digital.

34. Non-transient computer readable medium in use employing unmanned display assembly suitable for navigating in a fluid medium, the assembly having a plurality of display pixels for displaying messages/images wherein each pixel comprises a dedicated drone, the pixels being detachably attached together in the assembly by attachment means, the medium comprising:

stored computer-readable instructions for causing a computer processor to perform operations comprising: navigating the assembly in a fluid medium; while the assembly is in a fluid medium, providing electronic instructions to at least one dedicated drone to detach the corresponding pixel from the assembly and undergo physical movement relative to the assembly, the physical movement being to change at least one feature from the group consisting of:

a) orientation of the at least one pixel, and

35. The medium according to claim 34 wherein the operations further comprise:

effecting navigation of the assembly by at least one dedicated drone.

36. The medium according to claim 34 wherein the assembly further comprises a common drone disposed on the assembly, the wherein the operations further comprise:

effecting navigation of the assembly by the common drone.

37. The medium according to claim 34 wherein the operations further comprise:

38. The medium according to claim 34 wherein the operations further comprise:

providing audio output by audio means disposed in the assembly.

39. The medium according to claim 34 wherein the operations further comprise:

enabling at least one drone being attached to at least one pixel to effect the physical movement.

40. The medium according to claim 34 employing first and second assemblies, the operations further comprising:

optically capturing an object by a pin-hole camera in at least one first pixel in the first assembly; and

wirelessly forming an image on at least one second pixel in the second assembly, the image being formab!e by electronic means.

41. The medium according to claim 40, wherein the pinhole camera is replaced by a lens based camera.

42. The medium according to claim 34 employing an optically captured object by a pinhole disposed on a first face of the pixel to form an image, wherein the operations further comprise:

43. The medium according to claim 34 wherein the operations further comprise:

controlling at least a part of the assembly with wireless instructions; and

controlling the rest by on-board electronic controller.

44. The medium according to claim 34 wherein the operations further comprise:

controlling the physical movement where the attachment means is an electromagnetic device.

45. The medium according to claim 34 wherein the operations further comprise:

at least in part powering the assembly by resonant energy transfer means based on oscillating magnetic fields.

46. The medium according to claim 44 or claim 45 wherein the assembly further comprises on-board rechargeable battery, the operations further comprise:

47. The medium according to claim 34 wherein the operations further comprise:

displaying the messages/images which at least in part are digital.