DE202013010365U1 - Device for projecting an image - Google Patents

Abstract

Apparatus (30) for projecting a moving or still image, graphic or other visual representation of information, comprising: a motorized deflection means (60) for redirecting light from a projector (20) in an adjustable direction (68); a carrier (40); a first support portion (45) on the support (40) for supporting a projector (20); a second support section (46) on the support (40) for supporting the motorized deflection device (60), signal processing means (70, 80) for generating a control signal for the motorized deflection device (60), the signal processing means (70, 80 ) is arranged outside the carrier (40) under a cover (79, 89).

Description

The present invention is directed to an apparatus for projecting a moving or still image, graphic, text or other visual representation of information that facilitates movement or displacement of the direction in which it is projected and the projection.

More and more powerful projectors allow you to project moving and still images, graphics, text and other representations of information over ever greater distances and to ever larger areas. This is used in stage shows, performances and other artistic performances, promotional events, competitions, meetings, congresses and many other occasions. The desire arose to move the direction in which the image, the graphic, the text or the other representation of information is projected in space and thus to be able to shift the projection onto, for example, wall and / or ceiling surfaces.

One approach is to pivot the entire projector about several axes, similar to a head moving headlight or a moving head. However, powerful projectors have a large mass. All mechanical components that carry a powerful projector pivotable about multiple axes, and all drive equipment must therefore be designed or dimensioned accordingly.

An object of the present invention is to provide an improved apparatus for projecting a moving or still image, a graphic or other visual representation of information.

This object is solved by the subject matters of the independent claims.

Further developments are specified in the dependent claims.

Embodiments of the present invention are based on the idea of designing a device for projecting similar to a scanner, that is to direct the light emanating from a rigidly mounted projector by means of a motorized movable deflection device in an adjustable direction, and thereby a signal processing device for generating a control signal for the motor to arrange movable deflector outside a carrier carrying the projector and the deflector under a cover.

The resulting in the design temptation to form the support for supporting the projector and the deflection as a hollow beam and the signal processing device protected within the hollow support to resist, allows a number of advantages. In particular, the carrier can be designed with significantly reduced design and manufacturing complexity and thus readily adapted to a variety of different projectors and to different applications with different preferred projection directions. The space occupied by the signal processing device for generating a control signal for the motorized deflection device is independent of the performance, the size, the mass and other properties of a projector for which the device is provided. The cover for the signal processing device can therefore be designed the same for different devices whose carriers are adapted to very different projectors and very different applications. The structural adaptation of the device to a particular projector is therefore limited to the construction of the carrier.

An apparatus for projecting a moving or still image, a graphic or other visual representation of information comprises a motorized deflector for deflecting light in an adjustable direction, a carrier, a first support portion on the support for supporting a projector, a second support portion on the carrier for supporting the motor-movable deflection device and a signal processing device for generating a control signal for the motor-driven deflection device, wherein the signal processing device is arranged outside the carrier under a cover.

The deflection device can be pivoted about two axes, in particular by means of two electric motors, ultrasonic motors or other drive devices. In particular, the deflection device comprises one or more mirrors or prisms which reflect light generated by a projector.

The support section is designed in particular for rigid or stationary carrying or holding a projector.

In particular, the signal processing device has a DMX-512 interface and / or an Ethernet interface and an integrated Art-Net-Node in order to be able to receive and transmit DMX packets, commands and values via Ethernet. The signal processing device is arranged in particular in the immediate vicinity of at least one motor for moving the deflection device. In particular, the Signal processing device and the motor arranged under the cover.

In particular, the signal processing device is not arranged in a cavity in the carrier. The signal processing device is surrounded in particular only on one side or on two sides of the carrier and on other sides or on all other sides of the cover. The signal processing device is in particular not arranged within a U-shaped cross-section of the carrier.

In a device as described here, the carrier is in particular formed from a cut and bent plate and has no cavity.

In particular, the carrier is formed from a sheet cut by laser cutting, water jet cutting, sawing, milling or otherwise, or another plate-shaped semi-finished product which has been folded or bent one or more times before and / or after cutting. A cavity would be a region of space bounded by at least three or at least four sides of the support.

A production of the carrier from a cut and bent plate is possible with very little effort and high precision. For example, the support can be quickly designed using CAD, depending on the dimensions, mass, and other properties of a projector, and cut and bent within a short time. An adaptation of the carrier to almost any projector and almost any application is therefore readily possible.

The design of the carrier made of a sheet metal or other originally plate-shaped material also allows a particularly slim shape or a particularly narrow cross-section of the carrier, so that this little restricts the directions in which the light of the projector can be thrown or directed. With suitably thick-walled design of the carrier this shows a low tendency to vibration and radiates little noise. Furthermore, waste heat from the signal processing device, motors of the deflection device and / or the projector can be dissipated well via the carrier.

In a device as described here, in particular the carrier and at least one of the two support sections are formed from a single cut and bent plate, on which the deflection device is arranged and a projector can be fastened directly.

The deflection device and the signal processing device are each fastened in particular directly on the second support section. A projector can in particular be attached directly to the first support section. In particular, the carrier has an approximately L- or U-shaped flat area, near the two ends of which the support forming plate is angled in each case by 90 degrees, wherein the angled portions form the support portions for the deflection and projector. Furthermore, the carrier can have further bevelled, in particular strip-shaped, regions which can serve to stiffen the carrier.

In a device as described here, the cover has in particular the shape of a curved hood.

The hood is in particular substantially or at least partially spherical surface or shell-shaped. The signal processing device is arranged in particular on the planar second support section and is arched over by the hood in the form of a dome or a dome and protected from environmental influences.

In a device as described here, the cover has in particular a translucent, transparent, partially transparent or opaque material.

The cover consists in particular of a clear or transparent, translucent or opaque material.

In particular, a device as described here further comprises a device for generating illumination light for an environment of the device.

The means for generating illumination light may comprise one or more light-emitting diodes, in particular RGB, RGBA, RGBW or RGBAW LEDs, which enable generation of a wide variety of color impressions. The means for generating illumination light may be used to generate lighting moods and / or to produce a general basic brightness in otherwise completely dark room.

By generating a basic brightness, the contrast of a boundary between a dark area of a projected image and an area not illuminated by the projector can be reduced. Since projectors are never able to create ideal black areas, in a very dark room or on an area illuminated only by the projector, there is always an edge between the area illuminated by the projector and the projector perceptible surrounding area. This border or border is perceived as disturbing in many applications. The generation of a basic brightness by means of the device for producing illumination light can significantly reduce the contrast or the perceptibility of this border or edge.

In a device as described here, the device for generating illumination light is arranged in particular under the cover.

In a device as described here, the signal processing device comprises in particular a signal input for receiving or a memory device for storing or an interface for coupling to a memory device for storing a first image signal describing an image to be projected, and a signal output for outputting a second image signal to a projector attached to the device, wherein the signal processing device is designed to convert a first image signal received at the signal input or read out of a memory device depending on the direction set by the deflecting device into a second image signal output at the signal output.

As an alternative or in addition to the signal input for receiving an image signal, the device may comprise a memory device for storing moving and / or still images, graphics, text and other information and / or their visual representation. The memory device comprises, for example, a flash memory, an SSD or other write once or rewritable solid state memory, a hard disk, another magnetic disk, a drive for a CD-ROM, a DVD, a BluRay disk or other optical and / or magnetic storage means. Further, alternatively or additionally, the device may include a USB port, a FireWire port, or other slot for recording or docking with a storage medium.

In particular, the signal processing device comprises two parts, which may be spatially separated from one another, namely a first part for generating a control signal for the motor-driven deflection device and a second part for processing the image signal.

In a device as described here, the signal processing device is in particular designed to generate an equalized image on a projection surface at least partially independently of a direction set by means of the deflection device.

Any projection onto a planar projection surface from a direction that is not parallel to the surface normal of the projection surface will result in distortion of the projected image. This distortion of the projected image can be compensated for high-quality projectors by tilting or tilting the lens and / or the template (for example, LCD or Micro Mirror Device) within certain limits. The processing of the image signal supplied to the projector proposed here can make it possible to equalize the image even for significantly larger angles between the direction of projection and the surface normal of the projection surface. Furthermore, the processing of the image signal by the signal processing device can enable an improved projection, which is perceived as undistorted, at least from an observation direction, also on non-planar projection surfaces.

In a device as described here, the signal processing device is designed, in particular, to detect a geometric property of a projection surface and to convert a first image signal received at the signal input depending on the geometric property into a second image signal output at the signal output.

The signal processing device comprises in particular a camera, a laser scanner or another detector for detecting a geometric property of a projection surface, for example its size, its inclination, its curvature, its distance from the device. Alternatively, the signal processing device may have a signal input for receiving an image signal of a camera or a detector signal of a laser scanner or another detector.

In particular, a device as described herein further comprises a camera or a laser scanner for detecting at least one of a position and an orientation of a projection surface relative to the device.

In a device as described here, the signal processing device comprises in particular a signal input which corresponds to the Ethernet standard or another network standard, wherein the signal processing device at least either for receiving or for transmitting control signals in accordance with DMX-512 standard is formed over the signal input.

Embodiments will be explained in more detail with reference to the accompanying figures. Show it:

1 a schematic perspective view of a room with a device for projecting;

2 a schematic axonometric view of a device for projecting;

3 a further schematic representation of the device 2 ;

4 a further schematic representation of the device of the 2 and 3 ;

5 a further schematic representation of the device of the 2 to 4 ;

6 a further schematic representation of the device of the 2 to 5 ;

7 a schematic axonometric representation of a deflection of the device of the 2 to 6 ,

1 shows a schematic perspective view of a room 10 with several flat surface areas 12 covering the floor, the walls and the ceiling of the room 10 form. Each adjacent flat surface areas 12 form an edge 16 , In many conventional rooms these edges run 16 vertical or horizontal.

Where three level surface areas 12 adjacent to each other and corresponding to three edges 16 cut or hit, is a corner 18 in front.

On a wall of the room 10 is a device 30 arranged to project with respect to the 2 to 7 is described in more detail. The device 30 projects a moving or still image, graphic, text, or other visual representation of information to a planar surface portion 12 (in 1 for example: to the ceiling) of the room 10 , The direction 68 from the device 30 to the middle of the device 30 illuminated or illuminated surface is not parallel to the surface normal 14 of the flat surface area 12 of the room 10 , A rectangular template (for example LCD or Micro Mirror Array) of the device 30 is therefore on an in 1 shown in dotted outline non-rectangular area 32 displayed. This area 32 is the one with the selected projection direction 68 simultaneously through the device 30 illuminated area. The area 32 is square, but not rectangular. The edge of the area 32 has four straight sections that do not include a right angle and at least partially not parallel to the edges of the flat surface area 12 are. One from the device 30 without further correction in the entire area 32 projected image is perceived as distorted by the viewer.

To project an image undistorted by the viewer, the device points 30 a signal processing device for processing an image signal received from an external source. The image signal is processed or processed in such a way that within the device 30 at the same time illuminable area 32 only an actual rectangular area 34 is lit or an image in the rectangular area 34 is projected. The area 34 has in particular four pairs of parallel straight sides. These four straight sides can, as in 1 exemplified, parallel to edges 16 or edges of the flat surface area 12 be.

2 shows a schematic axonometric view of the device 30 out 1 , The device 30 includes a projector 20 with a signal input 22 for receiving an image signal. The projector 20 is rigid on a carrier 40 attached. Furthermore, the device comprises 30 a deflection device 60 with a mirror 62 , which is rotatable or pivotable about two (in particular mutually perpendicular) axes driven by a motor. The carrier 40 is articulated with a wall bracket or a mounting bracket 52 for attachment to a truss (often referred to in the event technology as truss), to a scaffold, a pole, a tripod, a wall, a floor or a ceiling of a room or to another load-bearing surface. The carrier 40 is relative to the mounting bracket 52 in particular about a pivot axis 48 swiveling and lockable.

On the carrier 40 are also a first signal processing device 70 under a hood-shaped cover 79 and a second signal processing device 80 under a hood-shaped cover 89 arranged. The first signal processing device 70 is provided and adapted to control signals for motors for pivoting the mirror 62 to create. A first motor for pivoting the mirror 62 around a first axis is under the cover 79 arranged.

The second signal processing device 80 is near the projector 20 on the carrier 40 arranged. The second signal processing device 80 includes a signal input 81 for receiving an image signal from an external image signal source and a signal output 86 for providing a processed image signal and / or for providing control signals to the controller of functions of the projector 20 (for example, brightness, color settings, focal length, lens tilt, original, subject, image, or focus plane, pincushion distortion of the image). The signal output 86 the second signal processing device 80 is specifically intended to be replaced by a in 2 not shown signal cable to the signal input 22 of the projector 20 to be connected.

Alternatively and deviating from the illustration in 2 can the device 30 alternatively or in addition to the signal input 81 a storage device for storing moving and / or still images, graphics, text and other information and / or their visual representation. Furthermore, the device 30 a USB port, FireWire port, or other slot for recording or pairing with a storage media or memory card. The storage device of the device 30 or the storage medium which can be coupled to the device comprises, for example, a flash memory, an SSD or other write once or rewritable solid state memory, a hard disk, another magnetic storage disk, a CD-ROM drive, a DVD, a BluRay disk or other optical and / or magnetic storage device.

The second signal processing device 80 is provided and adapted to be at the signal input 81 receive processed image signal in such a way or process and in the processed state at the signal output 86 provide that regardless of the angle between the direction of projection 68 and the surface normal 14 of the illuminated flat surface section 12 (see. 1 ) an equalized or by the viewer as undistorted perceived image is generated. This is the second signal processing device 80 in particular with the first signal processing device 70 coupled to the image signal depending on the orientation of the mirror 62 prepare. In particular, the second signal processing device 80 a DMX-512 interface, an Ethernet interface or other interface with a downstream Art-Net node for receiving and transmitting DMX packets, commands and values, in particular for receiving positioning commands for the deflection device 60 , on. The positioning commands are on the one hand by the second signal processing device 80 processed to the first signal input depending on the positioning commands 81 to process received image signal, and on the other hand to the first signal processing means 70 forwarded the motor setting the desired position of the mirror 62 controls.

The division of tasks and functions between the signal processing devices 70 . 80 can from the representation on the basis of 2 differ. In particular, the first signal processing device 70 merely for forwarding or merely for minor conditioning or for power amplification and / or for optical-electrical conversion of control signals for motors for rotating or pivoting the mirror 62 be educated. In this case, the generation of control signals for motors to rotate or pivot the mirror takes place 62 in particular partially, largely or completely in the second signal processing device 80 ,

Furthermore, deviating from the illustration based on the 3 both signal processing devices 70 . 80 under one of the two hood-shaped covers 79 . 89 arranged and / or the features and functions of both signal processing devices 70 . 80 be integrated into a signal processing device.

3 shows a further schematic representation of the device 30 out 2 , The signebne of 3 is parallel to a flat, L-shaped part 42 of the carrier 40 and orthogonal to the pivot axis 48 between the mounting bracket 52 and the carrier 40 ,

At one end (in 3 : below) of the carrier 40 are the projector 20 and the second signal processing means 80 attached. At the opposite end (in 3 : above) of the carrier 40 is the deflection device 60 with the first signal processing device 70 arranged. For this purpose, the carrier 40 in particular a flat first support section 50 and a flat second support section 46 , each orthogonal to the plane of the 3 extend, on.

The carrier 40 is together with its carrying sections 45 . 46 made from a single cut and bent sheet metal. In addition to the support sections 45 . 46 can be more strip-shaped areas 43 opposite the substantially flat L-shaped area 42 of the carrier 40 be bent or bent by about 90 degrees to the carrier 40 to stiffen. The carrier 40 has several holes and other openings for mounting the projector 20 , the second signal processing device 80 , the cover 89 over the second signal processing device 80 , the diverter 60 , the first signal processing device 70 and the cover 79 over the first signal processing device 70 on the support sections 45 . 46 , for swiveling and lockable mounting of the mounting bracket 52 in several different places on the carrier 40 and for attaching cables to the carrier 40 on.

The covers 79 . 89 are in 3 shown transparently, under the covers 79 . 89 arranged components and components are indicated in dashed lines. The cover 79 at the deflection device 60 has a transparent, translucent or opaque material. Under the cover 79 are next to the first signal processing device 70 a first motor drive 65 to rotate the mirror 62 around a first pivot axis 64 and a facility 92 arranged to generate illumination light.

A second motor drive 67 is to pan the mirror 62 about a second pivot axis 66 provided and trained. The second motor drive 67 in particular, directly with the back of the mirror 62 pasted, for example glued. The first motor drive 65 rotates the mirror 62 and with the mirror 62 together also the second pivot axis 66 and the second motor drive 67 around the first pivot axis 64 , The second pivot axis 66 is in 3 For example, orthogonal to the plane of the 3 shown.

Through a lens 24 from the projector 20 escaping light is at the mirror 62 reflected and in a projection direction 68 thrown. By rotating or panning the mirror 62 about the panning things 64 . 66 by means of motor drives 65 . 67 can the projection direction 68 be set arbitrarily within a predetermined range. To go from the projector 20 to absorb generated radiant power and to avoid reflections even when the mirror 62 unfavorable oriented, can be a heat shield 54 be provided.

The device 92 In particular, one or more light-emitting diodes or other light sources for illuminating the surroundings of the device comprise for generating illumination light 30 in particular for generating an adjustable basic brightness, and / or for displaying a status of the device 30 , The device 92 in particular comprises one or more light-emitting diodes for generating light of the colors red, green, blue and optionally yellow or amber and / or other colors. By controlling the individual LEDs not only the overall brightness, but also the color tone can be adjusted within wide limits.

4 shows a further schematic representation of the device 30 from the 2 and 3 , The representation in 4 differs from the representation in 3 in that the mirror 62 around the second pivot axis 66 is pivoted to another projection direction 68 to create. Based on 5 and 6 is shown that the carrier 40 due to its flat cross section the projection direction 68 only slightly restricts.

5 shows a further schematic representation of the device 30 from the 2 to 4 , The drawing plane of the 5 is orthogonal to the drawing planes of the 3 and 4 and orthogonal to the planar second support section 46 on the carrier 40 , In the 5 illustrated position of the mirror 62 corresponds to the in 3 shown.

In 5 it can be seen that the second support section 46 opposite the L-shaped area 42 of the carrier 40 bent or folded by 90 degrees. Furthermore, strip-shaped bent areas 43 for stiffening the otherwise flat L-shaped area 42 of the carrier 40 recognizable. Two screw clamps 49 serve to lock the carrier 40 relative to the mounting bracket 52 ,

6 shows a further schematic representation of the device of the 2 to 5 , The type of representation, in particular the drawing level, corresponds to that of the 5 , In the 6 illustrated position of the mirror 62 corresponds to the in 4 shown.

7 shows a schematic axonometric representation of the deflection device 60 the device from the 2 to 6 , The motor drives 65 . 67 are in particular two-phase stepper motors or other stepper motors, optionally with integrated reduction gears. Alternatively, the motor drives 65 . 67 For example, be ultrasonic motors.

The motor drives in particular have step angles of 0.9 degrees. Each individual step can by means of a in the first signal processing device 70 or in the second signal processing device 80 integrated motor driver into 256 microsteps. This allows subdivision of a 180 degree rotation into 51,200 microsteps so that the minimum motor rotation angle is 3.52 milligrades. The projection direction 68 (see. 1 . 3 . 4 ) is so quasi continuously or smoothly swiveled. The output shafts of the motor drive devices 65 . 67 are each rigidly connected to the ends of two legs arranged at right angles to each other of an L-shaped component, in particular by means of grub screws in form and locks held in holes. The first motor drive device 65 is on the second support section 46 of the carrier 40 (see. 3 to 6 ), the second motor drive means 67 is by gluing or otherwise using the back of the mirror 62 connected.

8th shows a further schematic axonometric representation of the device of the 2 to 6 , As already mentioned, the carrier 40 optionally several alternative mounting positions for a mounting bracket 52 on. In 8th is the device with an alternative mounting bracket 52 also shown at an alternative mounting position on the carrier 40 is mounted.

LIST OF REFERENCE NUMBERS

10

room

12

level surface area of the room 10

14

Surface normal of the plane surface area 12

16

Edge between two flat surface areas 12

18

Corner between three flat surface areas 12

20

projector

22

Signal input of the projector 20

24

Lens of the projector 20

30

Device for projecting

32

through the device 30 simultaneously illuminable area on a flat surface area 12

34

Area where an equalized image is projected

40

carrier

42

L-shaped area of the beam 40

43

Beveled area on the girder 40

45

first support section or projector trench section for supporting the projector 20 on the carrier 40

46

second or further support section for supporting the deflection device 60 on the carrier 40

48

Swivel axis between mounting bracket 52 and carriers 40

49

Screw terminal device for locking the pivot axis 48

52

Mounting bracket for attachment to a truss, a scaffold, a pole, a tripod, a wall 12 and for carrying the carrier 40

54

Heat shield for absorption of radiant power

60

deflecting

62

Mirror of the deflection

63

L-shaped component

64

first pivot axis of the mirror 62

65

Motorized drive for first pivot axis 64

66

second pivot axis of the mirror 62

67

Motorized drive for second pivot axis 66

68

Projection direction or direction in which the deflection 60 from the projector 20 generated light directs

70

first signal processing device for controlling the deflection device 60

79

Cover of the first signal processing device 70

80

second signal processing device for image equalization, optionally also for controlling the deflection device 60

81

Signal input of the second signal processing device 80

86

Signal output of the second signal processing device 80

89

Cover of the second signal processing device 80

92

LED under a cover 79 . 89

96

camera

98

laser scanner

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited non-patent literature

• DMX-512 standard [0036]

Claims (12)

Contraption ( 30 ) for projecting a moving or still image, graphic or other visual representation of information, comprising: a motorized deflection device (10); 60 ) for redirecting light from a projector ( 20 ) in an adjustable direction ( 68 ); a carrier ( 40 ); a first support section ( 45 ) on the carrier ( 40 ), to carry a projector ( 20 ); a second support section ( 46 ) on the carrier ( 40 ), for carrying the motor-driven deflection device ( 60 ), a signal processing device ( 70 . 80 ) for generating a control signal for the motor-driven deflection device ( 60 ), wherein the signal processing device ( 70 . 80 ) outside the carrier ( 40 ) under a cover ( 79 . 89 ) is arranged. Contraption ( 30 ) according to the preceding claim, in which the carrier ( 40 ) is formed from a cut and bent plate and has no cavity. Contraption ( 30 ) according to one of the preceding claims, in which the carrier ( 40 ) and the support sections ( 45 . 46 ) are formed from a single cut and bent plate on which the deflection device ( 60 ) and a projector ( 20 ) is directly attachable. Contraption ( 30 ) according to one of the preceding claims, in which the cover ( 79 . 89 ) has the shape of a curved hood. Contraption ( 30 ) according to one of the preceding claims, in which the cover ( 79 . 89 ) has a translucent, transparent, partially transparent or opaque material. Contraption ( 30 ) according to any one of the preceding claims, further comprising: means ( 92 ) for generating illumination light for an environment of the device. Contraption ( 30 ) according to the preceding claim, with reference back to claim 5, in which the device ( 90 ) for generating illumination light under the cover ( 79 . 89 ) is arranged. Contraption ( 30 ) according to one of the preceding claims, in which the signal processing device ( 70 . 80 ) a signal input ( 82 ) for receiving or a memory device or an interface for coupling to a memory device for storing a first image signal which describes an image to be projected, and a signal output ( 86 ) for outputting a second image signal to a projector attached to the apparatus ( 30 ) and the signal processing device ( 70 . 80 ) is designed to be at the signal input ( 82 ) received or read out of a memory device first image signal depending on the means of the deflection ( 60 ) set direction ( 68 ) in on at the signal output ( 85 ) converted second image signal to convert. Contraption ( 30 ) according to the preceding claim, in which the signal processing device ( 70 . 80 ) is formed to at least partially independent of one by means of the deflecting device ( 60 ) set direction ( 68 ) an equalized image on a projection surface ( 12 ) to create. Contraption ( 30 ) according to one of claims 7 and 8, in which the signal processing device ( 80 ) is adapted to a geometric property of a projection surface ( 12 ) and one at the signal input ( 82 ) received first image signal depending on the geometric property in on at the signal output ( 86 ) converted second image signal to convert. Contraption ( 30 ) according to the preceding claim, further comprising: a camera ( 96 ) or a laser scanner for detecting at least either a position or an orientation of a projection surface ( 12 ) relative to the device ( 30 ). Contraption ( 30 ) according to one of the preceding claims, in which the signal processing device ( 80 ) a signal input ( 81 ), the Ethernet standard or another network, the signal processing device ( 80 ) at least either for receiving or for transmitting control signals according to the DMX-512 standard via the signal input ( 81 ) is trained.

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