EP0912971B1 - Display device with several light sources and arrangement of display devices - Google Patents

Description

The invention relates to a display device for generating a display under Use of a light source network with individually controllable light sources can be excited to light up by a control unit. Show This type has so far been used in advertising or in Devices, where the light sources either as a light source chain or multiple light sources are arranged in a matrix and information is thereby displayed be that either all light sources in the light source chain or a part in a light source matrix to light up.

For example, the light sources are arranged so that several light sources to embody an alphanumeric character, for example, is such Arrangement only the display of the desired alphanumeric character possible, whereas with a matrix arrangement different light sources alphanumeric characters can be generated. With a matrix arrangement however, a great number of light sources are required to reflect the diversity of the alphanumeric To represent characters. For example, with a 10 x 20 matrix 200 light sources are already required, with light diodes, Incandescent lamps or LCD elements are usually used. Especially with one The hardware effort and the matrix of many light sources is very large Probability of failure of a single light source is considerably higher than in few light sources.

From EP-0 359 218-A a display instrument is known, in which on a pointer linearly aligned lighting elements transverse to the direction of movement of the pointer are moved and a control circuit depending on the lighting elements the current position of the pointer to form display symbols during switch the pointer movement on and off. The pointer can act like a pendulum be moved back and forth or rotate continuously.

Furthermore, from Patent Abstract of Japan, No.59-195181 (Application-No. 50-70553) by the applicant Seikoushiya K.K. a similar to that known from EP-0 359 218-A Display device known, in which arranged on a pendulum lamp elements transverse to their linear orientation within a predetermined one Time unit are moved back and forth, so that taking advantage of the so-called Afterimage phenomena the display of a desired one Information is generated.

From US-A-5 302 965 a rotation display is known, in which on a Rotation unit light-emitting diodes of different color types arranged are controlled by a control unit stored data accordingly to get a cylindrical display.

The display principle known from the publications described above draws are characterized in that only very few light sources are needed and that one Display can be generated for which the viewer has no display media, such as for example, a picture tube as seen on television, but that the The viewer sees the display as floating in the room against the background.

It is an object of the invention to provide a display based on the afterimage phenomenon easy and inexpensive to train and a high display variability to enable. Furthermore, a practically silent display device be formed.

The object is achieved with a display device having the features of claim 1.

• mit einem Träger gelöst gekoppelten von der Steuereinrichtung gesteuerten Antrieb, der den Träger so bewegt, daß die Lichtquellen innerhalb einer bestimmten Zeiteinheit wiederkehrend einen Flächenbereich mehrmals überstreichen,
• einer mit der Steuereinrichtung verbundenen Speichereinrichtung zur Speicherung einer Anzeigeinformation, und
• einer Einrichtung zur Erfassung einer Orts- und/oder Bewegungsinformation des Trägers wobei die Orts- und/oder Bewegungsinformation an die Steuereinrichtung übertragbar ist und in Abhängigkeit der Orts- und/oder Bewegungsinformation der Anzeigeinformation eine Lichtquelle von der Steuereinrichtung steuerbar ist.

This display device is equipped with a plurality of light sources arranged on a carrier, a control device for controlling an individual light source and / or a subset of light sources,

• with a carrier, which is detachably coupled and controlled by the control device, which moves the carrier in such a way that the light sources repeatedly sweep over a surface area repeatedly within a certain time unit,
• a storage device connected to the control device for storing display information, and
• a device for acquiring location and / or movement information of the wearer, the location and / or movement information being transferable to the control device and depending on the location and / or movement information of the display information, a light source can be controlled by the control device.

Advantageous further developments are described in the subclaims as well an arrangement consisting of several display devices.

It has been found that when the carrier is driven contactlessly is, a particularly silent display device can be built. Such contactless drive of the carrier can be done by an electromagnet, softer a pendulum arm designed as a carrier cyclically an attraction and / or repulsive force.

It also has a non-contact drive as well as the non-contact one Detection of the location and / or movement information the advantage that the wear the display device according to the invention is limited to a minimum. Furthermore, non-contact data transmission from the fixed part of the Display device for the moving part of the display device also advantageous, for example, by a contactless coupling of the control device to the carrier and the light sources located thereon can be.

Should be due to the movement of the wearer rotating movement on a cylindrical track, yet acoustic noises such a noise generation is caused by an aerodynamic to counteract favorable design of the carrier. With one Aerodynamic design of the carrier will be the expert with the help the knowledge of aerodynamic shaping, for example Aircraft wings avoid that the wearer has external corners or other discontinuous Has contours at which acoustic noise due to air flow can be generated.

It has also proven to be very expedient for the detection of a local and / or movement information of the carrier, a detector, preferably one Light barrier or proximity switch is provided, so that depending on the A position and / or movement information signal is generated which the control device as a reference signal for light source control and Drive control used. Through a non-contact as described above Detection of the location and / or movement information of the wearer is the occurrence of acoustic noises is also avoided.

The control device can control a each light source exactly and at the same time the drive control that the wearer is frequent enough and at exact time intervals is moved over the display area. It is also useful if one pendulum-like back and forth movement the generated representation with each movement is generated when the carrier runs back and forth. With that becomes one increases the display sharpness and at the same time the wearer does not have to be as frequent are moved across the display area.

In addition, the control signal depending on the reference signal and in Depending on the information to be displayed, each individual light source is switched on and off switch off so that it only lights up at a certain location on the display surface. Incidentally, the display becomes like this when a pendulum-type display is moved back and forth synchronizes that the display when moving forward with the display when returning optically covered.

It is also advantageous if the display device has means for determining the Ambient brightness is provided so that the luminosity of the light source dependence the ambient brightness can be adjusted.

It has also proven to be very useful if for individual information display one or more of the aforementioned display devices of which is connected to an information input / processing device, the information input / processing device preferably being staff Computer is on which the user is used and managed by a The editing program provided for the display control is capable of the content the information to be displayed. The content to be displayed becomes this first cached in a memory of the computer and with a corresponding command from the user to the selected display unit transmitted where the display information in the memory there is filed.

It is also advantageous that with an arrangement of several display devices each individual display device has an individual address, which allows the user to display the information to be displayed on the desired display unit is displayed.

The display principle of the display device described above is based on that if multiple light sources recur in the same way over one certain area are moved, creating a line-shaped Display is possible because a single specific light source repeatedly covers the same area of a certain area. Becomes a single Light source switched on or off accordingly during movement, so can a certain optical lighting effect for the viewer in the respective display line be generated. The light sources move over several times per second a certain area, can work for the viewer by interacting stimulated light sources, a still picture can be generated without him himself Carrier still sees the light sources in the display area. So it becomes a picture generates a displayed image from the light sources that are switched on and off generated for which the viewer cannot specify an image carrier if the Movement of the carrier of the light sources is only so fast that the carrier itself can no longer be identified. Here, the invention makes one to use psycho-optical inertia effect, which occurs with fast movements of There are always spots of light and, for example, from film and television technology is known, movements are finally represented by the fact that, for example more than 25 static images per second on the television screen or brought to the big screen. By the succession of dense contiguous different static events such as consecutive Still images that differ in certain points are used in the Viewer creates the impression of a movement.

By moving the individual light sources over the surface area, a creates imaginary matrix in which the ratio of the number of light sources and the Matrix points is very low. For example, it is easily possible with only 8 Light sources that lie linearly on a straight line and perpendicular to their orientation can be quickly moved back and forth, an imaginary matrix of about To create 8 x (50 to 200) pixels without the quality of the generated Image becomes insufficient. The effort to generate the ad regarding the Light sources themselves become drastic compared to a known matrix arrangement reduced. On the other hand, the movement of the light sources is very simple possible in which, for example, the carrier of the light sources cyclically back and forth is moved or rotated around a point.

With the display device according to the invention there is an amazing optical effect to achieve. The viewer sees an information display without the actual one Information display carrier such as Screen or display matrix detect. The viewer can see where the light sources do not light up Recognize the background behind the display.

The display device according to the invention can thereby be particularly advantageously design by the drive the carrier of the light sources like a pendulum back and forth moved or rotated around a pivot point. The light sources within a certain time unit, e.g. more than 20 times per second over the same area moves.

An embodiment is particularly advantageous in which the light sources are on a straight line are arranged one behind the other on the free end of a pendulum arm. Then you can easily create a display area of more than 10 cm in width, where each individual light source forms a line of the display.

For the information display, the display device has a memory which transmits the information to be displayed to the control device, be it as whole information or as single point information. Serves the display device as a clock, the display device contains a timer which the Corresponding time information to the control device as a function of a time signal which transmits the time information via the light sources digitally and / or analogue as the time.

The control device therefore sets a signal for information to be displayed for example converting a number into control signals for each individual light source, so that the light sources at a certain time and at a certain Place to light up.

Of course, it is also possible to use information not just statically also display as ticker on the display device. The location of the Illumination of a light emitting diode between successive passes only moved to one side of the display area.

The invention is described below using an exemplary embodiment shown in the drawings explained in more detail.

Fig. 1

eine Prinzipaufsicht auf eine Pendel-Anzeige

Fig. 2

ein schematisches Blockschaltbild der Anzeige nach Fig. 1

Fig. 3

Zeitablaufdiagramme der Einrichtung nach Fig. 1 und Fig. 2

Fig. 4

verschiedene Beispiele für Lichtquellenanordnungen.

Fig. 5

eine Darstellung einer Anordnung von mehreren mit einem Computer verbundenen Anzeigeeinrichtungen

Fig. 6

Prinzipdarstellung vom Aufbau einer erfindungsgemäßen Anzeigeeinrichtung mit rotierendem Leuchtquellenträger (Litfaßsäulenlösung)

Fig. 7

Schwingungs/Zeit-Diagramm einer erfindungsgemäßen Anzeigeeinrichtung

Fig. 8

Draufsicht auf eine Farblichtquellenanordnung

Fig. 9

Darstellung der Farbbildung durch Überlagerung sich bewegender Farblichtquellen

Fig. 10

eine alternative Ausführung zur Anzeige in Fig. 9

Fig. 11

eine weitere alternative Darstellung zur Farbentstehung

Fig. 12

eine weitere alternative Darstellung einer Farbentstehung aus Einzelfarben

Fig. 13

Darstellung eines elektronischen Ausgleichs eines mechanischen Versatzes von drei Zeigern

Fig. 14

Ansicht einer Rotationsanzeige von unten mit einer innenliegend angeordneten, weiteren Anzeige

Fig. 15

Darstellung einer Lichtquellenanordnung zur Erzeugung einerdreidimensionalen Anzeige

Fig. 16

Beispiel einer dreidimensionalen Anzeige, erzeugt durch eine Lichtquelienanordnung nach Fig. 15

Fig. 17

Anordnung von Empfangs- und Sendedioden zur Berührungsiosen Infrarot-Datenübertragung

In the drawing:

Fig. 1

a principle supervision of a pendulum display

Fig. 2

2 shows a schematic block diagram of the display according to FIG. 1

Fig. 3

1 and 2

Fig. 4

various examples of light source arrangements.

Fig. 5

an illustration of an arrangement of several display devices connected to a computer

Fig. 6

Schematic representation of the structure of a display device according to the invention with a rotating light source support (advertising pillar solution)

Fig. 7

Vibration / time diagram of a display device according to the invention

Fig. 8

Top view of a color light source arrangement

Fig. 9

Representation of color formation by superimposing moving colored light sources

Fig. 10

an alternative embodiment to the display in FIG. 9

Fig. 11

another alternative representation of color creation

Fig. 12

another alternative representation of a color formation from individual colors

Fig. 13

Representation of an electronic compensation of a mechanical offset of three hands

Fig. 14

View of a rotation display from below with another display arranged on the inside

Fig. 15

Representation of a light source arrangement for generating a three-dimensional display

Fig. 16

Example of a three-dimensional display generated by a light source arrangement according to FIG. 15

Fig. 17

Arrangement of receive and transmit diodes for non-contact infrared data transmission

Fig. 1 shows a carrier 2 designed as a pendulum arm 1, on which as light-emitting diodes trained light sources 3 on the pendulum arm axis in a row in one Composite 16 are arranged. The pendulum movement is controlled by an electromagnet 4 excited, which drives the pendulum arm 1 cyclically several times per Second, e.g. more than 10 times, moved back and forth. In a certain position the pendulum deflection penetrates or breaks through a part 5, which is from the pendulum arm 1 can protrude in parallel or coincide with the pendulum arm, a detector having light barrier 6, so that a rectangular signal by the pendulum arm movement generated as reference signal 15 - see Fig. 3a and b - or reference pulse becomes. The light barrier 6 consists of a light transmitter designed as an infrared LED and a detector. If the light barrier is used as a reference plate trained part 5 is interrupted, so - see + Fig. 2 - connected Control device 7 generates the reference pulse signal.

Depending on the reference signal, the drive is controlled by a control device 7 - see Figure 2 - controlled. The control device 7 ensures that the Pendulum 1 is excited as precisely as possible and thus executes an exact movement, and so often every second, e.g. covers the same area 17 more than 10 times, and thus in the area of the display surface 17 of the pendulum arm 1 itself is no longer recognizable. The only appears at the turning points of the pendulum Pendulum arm 1 as a line.

The control device 7 in Fig. 2 consists of a pendulum electronics 8 as Drive control and a control processor designed as a microcomputer 9, the control signals for the light sources 3 in the form of switch-on and Switch-off pulses generated. The pendulum electronics circuit 8 is with the light barrier 6 connected, which has a light transmitter and a detector. The signal excited by the movement of the pendulum arm 1 on the detector is in the Pendulum electronics or already on the detector itself as a reference pulse signal 15 generated and supplied to the microcomputer 9 via a corresponding line 10. At the same time, a magnetic pulse signal becomes the exact oscillation 19 of the pendulum arm 1 18 delivered to the drive 4 designed as an electromagnet, so that the pendulum arm performs a stable and smooth pendulum movement. It is very advantageous if the pendulum arm is excited so that it with its natural resonance frequency vibrates because the energy consumption for the drive is then extremely low. The natural frequency of the pendulum is determined by the pendulum mass and the geometric dimensions of the pendulum. The drive described works completely without mechanical wear, since the pendulum is driven by the electromagnet is excited without contact. This ensures a completely noiseless and wear-free drive.

The entire display device is supplied with 5 volts DC, which from a power supply unit 11, which converts AC voltage into DC voltage, is delivered. Of course, it is also possible to use batteries or accumulators or solar cells attached to the display device the necessary electrical Ensure energy supply.

The microcomputer 9 contains a memory and / or a timer that the holds or provides information to be displayed. At the same time takes the microcomputer converts the information to be displayed into corresponding ones Control signals for each individual light source. This will be Reference signal for Time-controlled switching on and off of the light sources and thus for information display used.

The relationship between reference pulse, magnetic pulse, pendulum vibration and information display is explained below with reference to FIG. 3.

It should be noted that FIGS. 3a and b each show schematic representations represent the pulse and vibration curve, but no exact times Representations.

In Fig. 3a is the relationship between the reference pulse and magnetic pulse as well the waveform shown. It can be seen that the Magnetic pulse signal only a shifted to the reference pulse signal Rectangular pulse signal represents. The reference pulse signal changes each at the zero crossing of the vibration signal through the time axis, i.e. by doing Moment when the pendulum arm reverses its direction of movement.

3b shows that the reference signal is also an alternative to FIG. 3a then changes when the speed of the pendulum arm on greatest is. At the same time it can be seen that the reproduction of information both in the pendulum arm as well as in the pendulum arm return movement, so always when the pendulum arm sweeps over the display area. Thus, for example, with 12 pendulum arm vibrations are swept 24 times over the display area and the corresponding control of the light sources takes place 24 times, so that 24 display images are generated per second. Such a number of Display images per second is enough to generate a still image, which can be easily recognized by a viewer and his Information to be read. The viewer takes the pendulum arm movement itself practically not true, since the pendulum arm speed over the display area is too big. At the same time, the viewer does not take on and off Switching off the individual light sources true, but only sees individual light points, which, as shown in FIG. 1, is comparable to a light point matrix Light spots appear in the display.

The microcomputer 9 receives the reference pulse signal from the pendulum electronics circuit 15, which is processed in the microcomputer so that the vibration of the pendulum for the microcomputer is available as a defined time slice. This Time slice is divided into forward and return information. In this time slice the right information is then sent to the individual light sources at the right time emitted, so that a clear line-shaped image information is created.

With increasing speed of the light points or with increasing number of vibrations the display quality can be improved. It is reversed with decreasing speed of the light spots or with decreasing number of vibrations of the pendulum arm, the representation is getting worse and worse and is too the low number of vibrations can hardly be recognized because the inertia of the human Eye is then no longer overcome. The synchronization of the light source control during the outward and return run, the control device 7 sets such that both information are visually superimposed and thus to match.

Fig. 4 shows some examples of light source arrangements, which for the representation according to the invention are suitable. 4a is that shown in FIG. 1 Light source composite 16 shown. All light sources are on one Straight lines arranged like a linear light source chain. In Fig. 4b the same number of light sources as in Fig. 4a are alternatively arranged. In 4c two rows of light source points are arranged next to each other and in Fig. 4d the light source points are on a zigzag line. Further Light source networks are possible and, depending on the application, can do more or be less beneficial. It is essential for all light sources that they are connected in the essentially transverse to a training direction 19 direction of movement be moved so that each individual point of light alone or together with one of the adjacent - see Fig. 4c - a display line of the invention Ad forms. Connected to the light sources indicated in Fig. 4 a nine-line display is equally possible. 4e shows one Light source composite of linearly arranged light sources, the one in the first vertical row arranged light sources red light that in the second row arranged blue light and the light sources arranged in the third row generate green light. With such a light source network can also design colored advertisements as the viewer does from other color rendering directions such as. a television or a color monitor.

4f shows a light source combination in which a single light source has three Has segments, each individual segment is able to one of the other signals to produce different color, so that also a like Color display and playback described above is possible.

The ones to be displayed can be stored in the memory contained in the microcomputer 9 Information is stored permanently or volatile or by means of a timer or another information generating device. Then it is possible that instead of a digital time display also or alternatively one Analog time display takes place in which the dial and the corresponding Time hand generation is generated with the display according to the invention. The Microcomputer 9 then only undertakes a different light source control than in the digital time display. With the display device according to the invention all types and shapes of two-dimensional images are generated that can also be generated with light point matrixes or other display screens can. Can connect the microcomputer to the light sources Light lines, electrical lines or information buses are used. Become Optical fibers used can be the end pieces of the respective light sources Optical fibers are used, which are aligned perpendicular to the plane of the drawing in Fig. 1 are so that the viewer looks at the end pieces.

The clock module integrated in the microcomputer, from which the time is read, continues to run even without the operation of the power supply unit, so that the clock does not have to be reset if the power supply fails.
It is also useful if the display device has a brightness measuring device, which is also connected to the microcomputer 9 (not shown). The brightness measuring device measures the brightness of the surroundings and emits a corresponding signal to the microcomputer, which in turn adjusts the luminosity of the light sources as a function of the measured brightness signal. For example, it may be indicated that the light sources shine brighter in bright daylight than in darker surroundings.

Light emitting diodes or incandescent lamps are particularly suitable as light sources, however also the end pieces of optical fibers or other known punctiform Light sources that can be switched on and off quickly and little energy need.

Implementation of information to be displayed in the microcomputer in Corresponding control signals of the light source is in principle from the control known a dot matrix printer, which the individual needles in any position transfers defined information. The horizontal run of the printhead The dot matrix printer over the paper then reveals the information. This The principle of the dot matrix printer is used in the invention in a similar manner Turning off the light sources used, the light source carrier like described must be moved quickly enough so that the inertia of the human eye is overcome.

Fig. 6 shows the basic structure of a display device in which the Light source carrier performs a rotary movement around a fixed pivot point and thus moving on a cylindrical path. So a 360 ° display is like possible with advertising pillars. The carrier 2 is in the display device in Fig. 6 as Rod 21 formed with LEDs 22. This rod 21 is on a rotatable Board 23 on which the electronics for display and data transmission is housed. Below this is connected a rotating board Turntable 24 attached, which is driven by a shaft 25. For An arranged detector is provided to determine the location of the rotatable circuit board 23, which with a certain positioning of the rotating board a reference pulse to the electronics.

Furthermore, another board 26 for wireless data transmission and for Motor control provided. The circuit board 26 is also provided with carbon grinding brushes 27 connected to the diodes 22 for current transmission. A bearing block 28 takes the Rotary shaft 25 and allows their rotation. The shaft 25 is driven by a drive motor which is wired or wireless with the circuit board 26 is connected and is controlled by the control device.

By the rotary movement of the rod 21 and by the corresponding control the light-emitting diodes 22 an advertising column-like display is possible, only with the The difference is that you can see through the display yourself. In the active State, the user can not see how the information on the "Advertising column" is coming. Such a 360 ° display has a screen considerable advantages because the information to be displayed is accessible in all directions can be made, especially if the information to be displayed as Marquee revolves around the advertising column.

In a further embodiment, not shown, they are shown in FIG. 6 Carbon grinding brushes replaced by a generator-like structure, i.e. that on the Shaft itself the rotor of a power generator sits, which is from the stator is surrounded. This results in a contactless or torque-free energy transfer enables the wear of carbon brushes from avoids in advance and also contributes to noise reduction.

Instead of only one rod 21, several rods with light-emitting diodes can of course also be used be provided, which has the consequence that then the rotational speed can be reduced. Because on a single rod anyway relatively large Centrifugal forces act, it is advantageous to arrange the bars opposite each other, which are connected to each other at the free ends, so as to be structurally reliable To ensure rod arrangement. Furthermore, it is appropriate rotatable part, i.e. rod and rotatable board as well as turntable, with one cylinder with transparent wall to cover collisions of the rod to avoid with other objects. If the inside of the cylinder is pumped empty, so the noise reduction due to the then no longer existing Possibility of collision of air molecules with the rod can be improved. If only one rod is provided in the construction shown in FIG. 6, then the Rotation frequency be about 25 Hz to give a qualitatively appealing display enable. A light barrier pulse is triggered with every revolution, which is supplied as a reference signal to the control electronics and thus the Allows synchronization.

Fig. 5 shows the basic structure of a display system consisting of various display devices 41, 42 -sei it with pendulum display or Advertising column display - which via a bus -z. B. BRS 485- with one person Computer as information input / processing device 40 are connected. Through such a structure paired with appropriate PC software, which the Display control of the individual display devices allowed, it is possible Enter the desired display information accordingly and store it temporarily on the PC and the cached information to the display devices deliver where they are then played.

Preferably, each individual display device is electronically selectable Address provided so that the PC not only all display devices at the same time, but can also select individually for information playback. Such an address can be, for example, a digitally encoded number.

Automatic monitoring of the proper operating status of the System is essential to keep this system secure to be able to guarantee. The system develops enormous forces in the operating state be checked for their balance. The principle here is that the System rotates and all forces are in balance. Would be out of any Reason e.g. would solve a component in the system, depending on the weight and location an imbalance occurs in the component. This unbalance inevitably leads to the system vibrates. This vibration is recorded and evaluated electronically. Becomes this imbalance is registered over a certain period of time (exceeding or falling below a threshold value), the system is automatically switched off. That means, that the system must always have a defined state in order to be able to tarnish.

As can be clearly seen in FIG. 7, the valid working range is exceeded not immediately to shutdown. Only if one over a certain period of time System shutdown becomes active. This system shutdown can only be deactivated by pressing a switch. The State of a shutdown also leads to the generation of a message about the Communication bus to the main computer.

Vibration dampening of slight vibrations takes place via so-called Vibrating metals or vibration dampers. The use of these vibration dampers has two main tasks. On the one hand there are light frequencies (e.g. noises) are not transferred to the fixed base frame. On the other hand a light barrier can be used for vibration measurement, which detects the mechanical Measure the difference between fixed and swinging parts can. The signal U_ oscillation can thus be generated very easily.

Every rotation system must be after an assembly of a factory setting undergo. This setting is necessary to make differences in production compensate. It will be very difficult to build a system that is instant runs smoothly. For example, the tires of every car are always balanced, to ensure an optimal concentricity. This problem also arises with a rotation display system. To be able to record this imbalance, simply viewed the signal U_ oscillation with an oscilloscope. This signal is by applying appropriate weights until perfect synchronization bring. The problem here is not the static imbalance, but that Detect and optimize dynamic unbalance.

Thanks to the rotation system, there is the possibility for the first time of colors of illuminants display mechanically one above the other. Based on the fact that the human eye mixes individual impulses into an image at certain frequencies, this effect can be used. Traditional ads like e.g. a television or an LED wall mix the colors with the basic color red, blue and green. The disadvantage, however, is the resolution. The colors are displayed side by side. The human eye is now far enough from At this point, people do not see the three individual colors separately, but rather combines them into a mixed color from the ratio of the individual colors.

By mechanically mixing the lamps red, green and blue in one suitable ratio, the resulting color in a quasi virtual point be generated.

A very high resolution can thus be achieved because of the mechanical limitation for the red dot is omitted. Digital mixing of colors over one The point is triggered by an appropriate control (on off). This has that Advantage that the electronic control is very simple. With a corresponding one Pulse-pause ratio becomes the intensity of the individual primary colors controlled. The information is available in a corresponding memory. By The digital mixing method can be used to connect an RC element accordingly be adapted, since an RC element acts like an integrator.

The RC element in a control must accordingly on the display frequency be coordinated. A quasi-analog adaptation is thus achieved.

However, it is also possible to use a color pixel over the period T to apply appropriate intensity. But this means a relative complex hardware expenditure.

For the time T, the pixel must reach and maintain a corresponding intensity.

The use of three colors is preferably achieved with three sticks, which in the 120 ° relationship to each other. Each bar contains either all three basic colors or each contains only one basic color. In any case, there must be synchronization of the three colors at the appropriate time T. A minimal one Offset would result in a blurry image. Further not necessarily be sure that all hands are always mechanically connected to the lamps are on the same vertical axis. Smaller, production-related errors always be there. In order not to measure this point mechanically and to compensate specifically, the electronics calculate an offset of 120 ° and a corresponding production error is included as a compensation factor.

In Fig. 13 it can be seen that the pointer 2 of plus x mm and the position of the Pointer 3 deviate from the ideal position by minus y mm.

This misalignment is not taken into account in production and only becomes apparent at Final test determined individually for each system. The speed is irrelevant. The calculation of the 120 ° base points is determined with each pass and recalculated for the following. This also includes the offset differences included accordingly. The differences are entered with a corresponding service and setting software program.

The use of motor control is not essential in this system necessary. Thanks to the 120 ° calculation, the system is able to Speed can only be measured by measuring the round trip time using a light barrier. The resulting calculation of the system-typical parameters thus becomes every revolution. This in turn allows simple uncontrolled drives to use. These systems are cheaper. Since the µController on the system the display data is not transmitted directly to the pointer, it has superordinate for this Calculate enough time.

The arrangement of the light center on the inner circle also allows the better one Utilization of the display area. This is particularly advantageous for systems which are mounted under the ceiling. It's not just the outer surface used, but also the inner surface. Thus, when viewed from below, a Part of the information can also be read in the inner area.

With a pointer arrangement to the middle room it is also possible to physically To show letters or three-dimensional parts.

The illuminants attached to the outer radius are combined with the illuminants, which are continuously attached further inside. So is it is possible to give a luminous point a corresponding depth. The illuminants are still arranged one below the other on the hands.

Letters or geometries can be represented spatially using the depth effect.

The contactless infrared data transmission of the systems is bidirectional. The means that data is sent and received at the same time. It can status information from the system to the main computer become. The system also receives data information as correct acknowledged. The data is transmitted via two transmission diodes and three / four Receive diodes, which are arranged so that they at any time the Always send and receive revolution. The arrangement is in Fig. 17 too see. The special thing about the arrangement is that there is always at every rotation ratio it is guaranteed that both can be sent and received. The The distance between the elements is always 60 degrees. The standing part a receiver diode can even be dispensed with.

Claims (13)

1. A display device for generating a multicolour representation with

   several light sources (3) disposed on at least one support (2),

   a control device (7) for controlling the light intensity of a single light source (3) and/or a subgroup of light sources,

   with a drive (4) controlled by the control device, which drive is connected to the support and moves said support so that the light sources (3) recurrently skim over a surface area (17) several times within a determined time unit,

   a memory device connected to the control device (7) for storing an item of display information,
   wherein light sources of at least three colour types are provided, namely red, green and blue,
   means for the controlled colour mixing are provided, for this the light intensity of at least one light source being controlled for a predetermined period of time (t) so that a desired resultant colour is produced,
   for colour mixing light sources of different colour type are connected at one and the same site or at sites in very close proximity, the display device being a rotational display device, which comprises at least two light source supports, which are disposed offset in a predetermined angular relationship, each support having one or more primary colour light sources,
   and so that an item of mechanical displacement information is electronically assigned to the second support or respectively the light sources of the second support, which information states by how many degrees or millimetres the support or respectively the light sources of the support are displaceed from the predetermined position,
   and so that a mechanical displacement between the supports or respectively the light sources of the supports is performed by controlled connection of the light sources by using the memorised mechanical displacement information.
2. A display device according to Claim 1,
   characterised in that the pulse-separation ratio of a single light source can be controlled for the desired colour production
   and in that an RC element preferably serves for the integration of the digital turn-on/turn-off signals of an individual light source.
3. A display device according to Claim 1,
   characterised in that the mechanical displacement difference between the second support and the first support is stored in non-volatile manner.
4. A display device according to one of the preceding Claims, characterised in that means for recording the rpm of the rotational speed of the light source supports and the light sources are provided.
5. A display device according to one of the preceding Claims, characterised in that individual light sources have a different spacing to the centre point of the axis of rotation.
6. A display device according to one of the preceding Claims, characterised in that means for recording the rpm of the rotational speed of the light source speed of the light source supports or respectively of the light sources are provided.
7. A display device according to one of the preceding Claims, characterised in that a display-data input unit (107) is provided, by means of which the information to be displayed can be inputted by the user,
   and in that the data input unit is electrically coupled with a data memory for storing the display data on the control printed circuit board (103).
8. A display device according to one of the preceding Claims, characterised in that firstly the light source support is connected electrically and mechanically with a printed circuit board (103) (Figure 2) and at its other end is connected via a connection means (104) to a retention part (105), which is disposed to some extent in the turning centre (106) .
9. A display device according to one of the preceding Claims, characterised in that means for recording a mechanical oscillation of the display device and switching means are provided, which preferably switch off the display device controlled by the oscillation detection means if a mechanical oscillation was ascertained at least over a predetermined period of time and/or a predetermined oscillation threshold value was exceeded over a predetermined period of time.
10. A display device according to Claim 9,
    characterised by oscillation damping means, which are disposed between the moving parts of the display device and a fixed base frame of the display device.
11. A display device according to Claim 9 or 10,
    characterised in that the means for recording the mechanical oscillation are used to establish a dynamic eccentricity,
    and in that the display device comprises a disk-type support on which sites for mounting weights are preferably disposed.
12. A display device according to one of the preceding Claims,
    characterised in that the support (2) is inclined at an angle not equal to 90° or 0° to the movement normal (100), preferably at an angle of roughly 30° - 60°.
13. A display device according to Claim 12,
    characterised in that several light source supports (2) are provided, which rotatingly skim over a surface area and in that the support (2) is arranged so that it is inclined at roughly 30° - 60° to the vertical direction (100).

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