Device and method for controlling key units

Abstract

A device (100) and method, the device (100) comprising a control apparatus (20) and a storage unit (60) and an input unit (10). A multiplicity of key units (11) for generating signals (14) are accommodated on the input unit (10). The key units (11) can each be moved between at least two positions (12, 13) and trigger a signal (14) when moving from the first position (12) to the second position (13). The key units (11) have an associated electrically controllable brake device (1) in order to slow down a movement of the key units (11) in a controlled manner. The brake device (1) comprises two brake components (2, 3) which are movable relative to one another and between which an electrically controllable braking action is adjustable. The control apparatus (20) is configured and designed to specify an operating sequence (70) of key units (11) and to take the operating sequence (70) as a basis for adjusting a braking action for at least one key unit (11).

Description

[0001] Device and method for controlling key units

[0002] The present invention relates to a device and a method for controlling key units. Such a device can be designed, for example, as a musical instrument component or musical instrument or also as an operating device or, for example, a keyboard for a computer or a computer with an integrated keyboard or the like. Typically, such a device comprises a plurality of adjacently arranged key units which serve to generate signals or sounds. The key units are, for example, received on a common support body. The key units are typically movable between at least two positions and generate at least one signal (directly or indirectly) at least when moved from the first position to the second position.

[0003] A wide variety of musical instruments, game controllers, computers, and computer keyboards have become known, each of which has a plurality or variety of key units. Experienced users can play pieces of music on musical instruments for their own enjoyment and the enjoyment of others, and computer users can enter short or long texts quickly and easily. The disadvantage, however, is that using computer keyboards, and even more so playing musical instruments, requires some practice. This is especially true if the input of texts is to be quick and error-free, or if the musical experience when playing instruments is to be enjoyable.

[0004] It is therefore the object of the present invention to provide a device and a method with which the operation of keyboards for example for computers or other operating devices or the playing of pieces of music on musical instruments is supported and in particular is easier to learn.

[0005] This object is achieved by a device having the features of claim 1 and by a method having the features of claim 22. Preferred developments of the invention are the subject of the dependent claims. Further advantages and features of the present invention will become apparent from the general description and the description of the exemplary embodiments.

[0006] A device according to the invention comprises at least one control device and a memory unit and an input unit on which at least a plurality of key units for generating signals is received. The key units can each be moved (at least) between at least two positions over an actuation path. The key units trigger at least one signal at least when moving from the first position to the second position. At least one (electrically) controllable braking device is assigned to at least some key units in order to brake a movement of the key units (in particular individually) in a controlled manner. The control device is set up and designed to predetermine an actuation sequence of key units. Depending on the actuation sequence, a braking effect of at least one of the key units can be set (in particular with the control device).

[0007] The device according to the invention has many advantages. A significant advantage of the device according to the invention is that an actuation sequence of the key units can be predetermined using the control device and that, in a corresponding manner, a particularly (individual) control of the braking effect of the key units is generated accordingly. This makes it easier for the user to operate such a device. If, for example, the device is designed as a musical instrument or forms a musical instrument component of a musical instrument, the sequence of a piece of music can be predetermined and the user of the device or the player can feel the respective braking effect when actuating the key units. The user receives direct feedback as to whether he is currently operating the correct key unit or an incorrect key unit.The same applies when entering text or other characters into a computer using a keyboard, for example. In this case, too, the operator receives direct feedback about whether they are using the keyboard correctly or pressing the keys in the wrong order or at the wrong time.

[0008] In particular, the control device is designed and constructed to set an individual braking effect (direct or indirect) on the key units depending on the actuation sequence.

[0009] In all embodiments, an actuation sequence can be or represent, for example, a keyboard sequence, a piece of music, or a gameplay sequence, for example, of a computer game. Accordingly, in a keyboard sequence, the sequence of characters can represent a meaningful text or a specific or random sequence of characters.

[0010] Basically, after the current key unit is pressed, the next key unit to be pressed becomes the current key unit, depending on the pressing sequence. However, it is also possible for the control to occur in a bar, in which case the "current key unit" is the key unit that is currently active in the chronological order. This is independent of whether the previous key unit was pressed correctly or at all. For example, in a piece of music, a note that was accidentally omitted can be skipped. The user can then continue from the currently correct position and, for example, deal with the omitted note on the next run.

[0011] In a preferred embodiment, the braking device comprises at least two brake components movable relative to one another, between which an electrically controllable braking effect can be set. Such a braking effect can represent or comprise a braking force or can also represent or comprise a braking torque. Accordingly, the braking effect can also comprise a braking force and a braking torque.

[0012] The controllable braking device can operate in different ways. For example, it can be an engine brake or a magnetic, hydraulic, or pneumatic brake. It is also possible for a spring force to be generated or overcome via electrical activation, thus bringing two friction linings into contact with each other or separating them.

[0013] Preferably, the braking device comprises at least one magnetorheological medium and can be subjected to a controllable magnetic field from at least one magnetic field generating device in order to adjust an electrically controllable braking effect. The braking effect can also be varied and / or controlled, in particular, over time.

[0014] In advantageous further developments, at least one braking device comprises at least one brake gap section that is (at least partially) equipped with the magnetorheological medium. It is preferred that the brake gap section be curved around a pivot axis of the braking device. It is also possible for the brake gap section to completely surround the pivot axis. In preferred further developments, the control device is configured and designed to set a freely adjustable braking effect profile over the actuation travel.

[0015] At this point, it should be noted that the term "actuating travel" refers to both a distance to be covered and an angular movement or an angular segment. This means that the term "actuating travel" refers to both a linear movement and a "rotary movement" or a "pivoting movement."

[0016] In all embodiments, the braking force and the course of the braking effect are preferably adjustable in a variable and / or individually variable manner. This results in a braking effect that varies over the actuation travel. In particular, the control device is designed and configured to apply a braking effect to a button unit that varies over the actuation travel.

[0017] It is preferred that the control device is configured and designed to set a braking effect profile over the actuation travel for a key unit currently being actuated and to set a different braking effect profile for another key unit. This means that the key unit currently being actuated feels different when actuated than at least one other key unit. This allows the user to directly and immediately feel whether they are currently pressing the correct key unit. It is also possible for two or more key units to be current key units at the same time or with a slight time delay. For example, when playing a chord or generating special characters on a keyboard.

[0018] Different key units can have a different

[0019] Course of the braking effect (braking force, braking torque) over the

[0020] Travel path or actuation path. For example, the key unit to be actuated can have a first path and a key unit that is not to be actuated can have a second path. It is possible, for example, that one key unit is assigned a rectangular path or a ripple with alternating strengths of the braking effect, while another key unit is assigned an increasing or decreasing path of the braking effect. Other paths such as a zigzag or a sinusoidal path or the like are also possible. The “braking effect” can also be understood as an “average” value over the travel path or a minimum or a maximum.

[0021] In all embodiments, it is also possible for the resistance of the key unit currently being actuated to be greater, rather than lower, than that of other key units that are not currently being actuated. This also enables a distinction to be made between key units that are currently being actuated and key units that are not currently being actuated.

[0022] The control device is preferably designed and configured to apply a lower braking effect to a key unit that is currently to be actuated due to the actuation sequence and to apply a greater braking effect to at least one other key unit (that is not currently to be actuated). It is conceivable that the key units arranged (directly or indirectly, if appropriate) in the vicinity of the key unit to be actuated are subjected to a different braking effect than the key unit that is currently to be actuated. In this respect, it is preferred that the control device is designed and configured to apply a different braking effect profile (and in particular a greater braking effect) to key units that are arranged immediately adjacent to or at a certain distance around a key unit that is currently to be actuated due to the actuation sequence.For example, only key units near the currently pressed key unit may be subjected to a (different) braking effect, while key units further away remain unaffected. For example, the (one or two) key units adjacent to the current key unit in each direction may be subjected to a different braking effect than the current key unit. This can help reduce energy consumption.

[0023] In all embodiments, it is preferred that at least some or all of the key units can be illuminated in a controlled manner using at least one lighting device. For example, an external lighting device can be provided that serves to selectively illuminate at least some or all of the key units.

[0024] It is particularly preferred that at least some key units, or almost all or all key units, each comprise at least one (dedicated and separate) lighting unit. Such a lighting unit can, in particular, be integrated into at least some key units. Integrated or internal lighting units enable simple and reliable signaling of the next or current key unit. This also visually indicates to the user which key unit is to be pressed next. The subsequent key unit can be illuminated in a different color rhythm and / or color tone.

[0025] In all embodiments, it is preferred that at least one display is included. Such a display can, for example, show an image of the plurality of key units. The control device is then preferably set up and designed to optically highlight the key units according to the actuation sequence. This can be done in addition to or instead of illuminating the key units to be actuated. A display can also be designed as a virtual reality display or such a display can be included in addition. It is also possible for a display to be formed on glasses. The glasses and / or the display can be designed to be partially transparent. Using such a display, a key unit can be selectively optically highlighted according to the actuation sequence. The control device is then, in particular, set up and designed to correspondingly highlight the area of ​​the display which corresponds to the next or previous key unit.currently pressed key unit.

[0026] In all embodiments, it is preferred that the control device is configured and designed to detect an actuation of a key unit using the sensor device. This can be done via a sensor device associated with a key unit. However, it is also possible, for example, for a camera to detect a movement of the actuation of the key units. In this case, a separate sensor device on each key unit may be dispensed with.

[0027] Preferably, a plurality of sensor devices is provided for the plurality of key units to detect individual actuation of the key units. It is also possible to provide only one common sensor device for each of two or three separate key units if a (regularly) reliable assignment of the actuation or sensor signal to a key unit is possible.

[0028] In all embodiments, it is particularly preferred that the control device is configured and designed to detect time intervals between the actuation of key units and store them in the memory unit to enable direct and / or subsequent evaluation. It is also possible for not only the time intervals of actuation to be recorded and stored, but also for a temporal progression of the actuation of the (current) key units to be stored in the memory unit. An evaluation can, for example, be carried out directly via the times of the signals from the sensor device or the key units and / or via measured values ​​from the sensor device.

[0029] The method according to the invention is carried out in particular using a device, wherein the device comprises at least one control device, a memory unit and an input unit. At least a plurality of key units for generating signals are preferably accommodated on the input unit. Preferably, at least one electrically controllable braking device is assigned to at least some key units. The key units are each movable between at least two positions and trigger at least one signal at least when moving from the first position to the second position. In this case, an actuation sequence of key units is predetermined, and a (in particular individual) braking effect of at least one of the key units is controlled depending on the actuation sequence. Such control is carried out in particular by means of the control device.Depending on the actuation sequence, the control device sets at least one (particularly individual) braking effect for the currently actuated key unit. In a simple case, a braking effect (constant for the actuation period) is set for the key unit. Time-based control of the braking effect of the key unit is also possible.

[0030] The method according to the invention also has many advantages. It makes learning how to operate and operate such devices considerably easier.

[0031] In particular, an actuation sequence of key units is specified and, depending on the actuation sequence, the controllable braking device is controlled in order to specifically control a braking of at least one of the key units.

[0032] In advantageous further developments, a key unit is braked differently and in particular more strongly than a key unit that is currently to be actuated (according to the actuation sequence).

[0033] Preferably, all key units are braked differently and in particular more strongly (or weaker) than a key unit currently to be actuated according to the actuation sequence.

[0034] In advantageous embodiments, a key unit currently being actuated is illuminated. The illumination can be provided by a central lighting system or by lighting integrated into the respective key units.

[0035] In all embodiments, it is particularly preferred that measured values ​​are stored in the memory unit via the actuation. The recording can be performed via separate sensor devices. However, it is also possible for the time of the signals to be recorded directly or indirectly.

[0036] In preferred developments, measured values ​​relating to the actuation of the key units are compared with preset values ​​from the actuation sequence. This is a preferred aspect of the control. In a simple case, the measured value can be, for example, the correct actuation of a key. This can be a quasi-digital value, for example on a computer keyboard. In this way, the correct or the incorrect key unit can be actuated. However, it is also possible to draw conclusions from the actuation history via the actuation path or the actuation angle. For example, the actuation speed or the volume of a played note or the like can be analyzed. In advantageous embodiments, measured values ​​from different operating processes are compared with one another, and at least one analysis value is determined and stored.For example, when writing a text or playing a piece of music, a comparison can be made with a previous process. This allows any improvement or change over time to be recorded and documented.

[0037] In particular, the method is carried out using a previously described device. The method can be used, in particular, to learn or improve the operation of the device. It is also possible to practice operating or playing the device.

[0038] A particularly preferred method is used to learn how to operate a previously described device. An actuation sequence of key units is predefined or adjustable. Depending on the actuation sequence, at least one braking device is controlled, and thus a braking effect (deceleration or braking intensity or braking force) of at least one of the key units is adjusted in a time-controlled manner.

[0039] The applicant reserves the right to claim a storage medium containing a program with the process steps.

[0040] Further advantages and features of the present invention are described in the embodiments which are explained below with reference to the accompanying figures.

[0041] Showing:

[0042] Fig. 1a-c show various embodiments of devices according to the invention as musical instrument components;

[0043] Fig. 1d-e show various embodiments of devices according to the invention which comprise a keyboard;

[0044] Fig. 2a, b highly schematic representations of devices according to the invention;

[0045] Fig. 3a-c a perspective view and two sectional views of a braking device for a device according to the invention;

[0046] Fig. 4 is a schematic overview of a device according to the invention; and

[0047] Fig. 5a-b different courses of the braking effect over the actuation path.

[0048] Figures 1a, 1b, and 1c show three different embodiments of musical instrument components 100b according to the invention as devices 100. Figure 1a shows a grand piano 101 as a musical instrument or musical instrument component 100b. The grand piano 101 has a keyboard (input unit 10) with a plurality of key units 11, which are collectively mounted on a support body 10a. The grand piano has a resonator 105. When the key units 11 are actuated, tones 16 are output as signals 14.

[0049] Figure 1b shows a piano 102 as a musical instrument component 100b, on which key units 11 on a keyboard are provided as input units 10. The key units 11 are also mounted on a common support body 10a. A resonance body 105 is also provided. Not shown in Figures 1a and 1b are pedals that can be operated as needed to change the sound characteristics.

[0050] Figure 1c shows a keyboard 103 or a musical keyboard, which also has a plurality of key units 11, arranged here on two levels. The respective key units 11 are movably mounted on a support body 10a and pivotably mounted therein. A control device 20 (and optionally an electronic control unit 50) can be mounted on the base body 10a or a housing, which are provided for controlling the magnetorheological braking devices and for further processing the generated signals.

[0051] Selector switches 25 for setting a desired characteristic or for switching the device on or off are also provided. A display 29 can be used for monitoring. Either the signal 14 or the audio signal 17 generated by the control device 20 can be output and forwarded at a terminal 22.

[0052] By means of lighting units 46 integrated into the key units 11 (only some lighting units are shown schematically), one (or in particular each) key unit 11 can be illuminated from the inside (or also from the outside if necessary), so that the user immediately recognizes the key unit 11 to be actuated now and, if necessary, subsequently.

[0053] The magnetorheological braking devices 1 arranged inside the housing (see Figure 2) allow the characteristics of the key units 11 to be specifically and individually adjusted and changed for each key when pressing them. Figure 1d shows a workstation with a table on which a computer with a control device 20 and a screen as a display 80 as well as a keyboard 104 are depicted. Additionally, a virtual reality display (VR display) 81 and a pair of glasses 82 with an integrated (e.g., partially transparent) display 80 are depicted on the table.

[0054] The control device 20 or computer comprises a memory unit 60 in which the program for the process sequence is stored. A (central) lighting device 45 and a camera 47 can be seen at the top of the display 80. The lighting device 45 can be used to selectively illuminate the individual key units 11 of the input unit 10. This visually indicates to the user which key unit should be pressed next or currently.

[0055] The camera 47 can record the currently actuated key units 11. This can be done by detecting which key unit 11 the user's finger is resting on. However, it is particularly preferred that the camera 47 and an image analysis be used to record the movement of the user's fingers when the key units 11 are actuated, and the measured values ​​are then assigned and recorded.

[0056] Figure 1e shows a schematic plan view of a keyboard 104, which can be used together with a computer or separately. In this respect, the keyboard 104 can also form a device 100 or a device 100a. The keyboard 104 has a plurality of key units 11, each of which can be equipped with a lighting unit 46, shown here in dashed lines. A key unit 11 can be illuminated from the inside or, if necessary, from the outside, via the lighting unit 46, so that the user can immediately identify the key unit 11 to be actuated.

[0057] As an example, a key unit 11a, currently or next to be actuated, is shown, surrounded on the left and right by key units 11b and 11c. Key units 11d border the current key unit 11a at the top, and two key units 11e border the current key unit 11a at the bottom. Key units 11b to 11e form the immediately adjacent key units.

[0058] When implementing the method according to the application, it is preferred that the current key unit 11a be provided with an individually adjusted braking effect via the associated braking device 1 (see Figures 2a, b and 3a-3c), while a different braking effect is set or controlled for the adjacent key units 11b to 11e. This is preferably carried out accordingly in other embodiments and, for example, also in the embodiment according to Fig. 1c.

[0059] Typically, the adjacent key units 11b to 11e are subjected to a greater braking effect (braking force and / or braking torque), while key unit 11a is subjected to a lesser braking effect. The exact progression of the braking effect over the respective actuation path and / or over time depends on the individual case. The key unit currently being actuated can be subjected to either a stronger or a weaker braking effect.

[0060] Figure 2a shows a possible embodiment of a key unit 11 on a highly schematic and only partially illustrated musical instrument component 100b or device 100 in a schematic section. The key unit 11 is mounted on a base body or support body 10a. The key unit 11 is mounted here on the magnetorheological braking device 1 so that it can pivot about an axis 1a. The key unit 11 is mounted here in an end region so that it can pivot about the pivot axis 1a. The first position 12, which is a rest position or initial position, is shown in solid lines. A pivoted second position 13 is shown in dashed lines.

[0061] To return the key unit 11 to the first position, which is a rest position, a return device 40 is provided which here comprises a spring device 42 designed as a spiral spring. When the key unit 11 is actuated, the spiral spring of the spring device 42 is compressed so that after the key unit 11 is released, it is automatically returned to the first position 12. A sensor device 21 with a first sensor component 21a and a second sensor component 21b serve to detect a measure of a position of the key unit 11. By evaluating the current position of the key unit 11 and the speed of movement and the rate of change of the acceleration, a signal 14 can be determined directly if necessary. In addition, the strength of the braking or the strength of the brake 1 is set via the current position of the key 11.

[0062] The magnetorheological braking device 1 here comprises an inner, fixed braking component 2 and a relatively pivotable outer braking component 3, which is arranged to pivot about the pivot axis 1a and is connected to the key unit 11. However, it is also possible for the key unit to be fastened to a pivotable inner braking component 2, which is pivotably mounted on the fixed outer braking component 3.

[0063] Figure 2b shows a schematic cross-section through part of a keyboard 104 or the like, wherein three adjacent key units 11 are at least partially visible on the device 100. Each key unit 11 is assigned a braking device 1, each of which has a pivot axis 1a. The course of the pivot axis 1a is oriented transversely and, in particular, perpendicularly to the actuation direction of the key unit 11.

[0064] The actuation is transmitted to a toothing 32 on the braking device 1 via the toothing 31 on an extension of the key unit 11. This converts the linear movement of the key unit 11 into a rotary or pivoting movement on the braking device 1. The necessary restoring force is provided by a schematically drawn restoring device 40, which generates a mechanical, magnetic, or other restoring force. The key units 11 are held on a common support body 10a. By way of example, the key unit 11 drawn on the right is designed as the current key unit 11a and is shown schematically here in the pressed state.

[0065] Figures 3a, 3b, and 3c illustrate a preferred embodiment of the magnetorheological braking device 1. Figure 3a shows a schematic perspective view. The inner braking component 2 and the outer braking component 3 are shown. The two braking components 2, 3 are mounted so that they can pivot relative to one another.

[0066] Figure 3b shows a longitudinal section. The inner brake component 2, here, can be stationary, for example. Cables for the power supply (not shown) and cables to any sensors, if present, can be routed through the hollow part of the inner brake component 2. Here, the inner brake component also forms the core 26, around which the electrical coil unit 24 is wound in a circumferential groove or the like.

[0067] The magnetic field generating device 9 here comprises the electrical coil unit 24 and the core 26 and can optionally also comprise a permanent magnet, which, for example, provides a base torque even in the de-energized state. During operation, the magnetic field of the permanent magnet (not shown here) can be either amplified or attenuated by energizing the electrical coil unit 24 in order to generate a time-dependent or distance-dependent magnetic field and thus a braking torque.

[0068] By way of example, Figure 3b shows the course of a magnetic field 8, which here passes approximately radially through the brake gap sections 5 and 6 of the brake gap 4 adjacent to the electrical coil unit 24. This generates a (variable) braking torque in each of the brake gap sections 5 and 6, which depends on the strength of the magnetic field.

[0069] The brake gap 4, which is part of a receiving space, is at least partially filled with a magnetorheological medium, so that magnetorheological particles are located in the brake gap sections 5 and 6, which are influenced by the magnetic field 8.

[0070] The brake component 3, which here radially surrounds the brake component 2, comprises a housing with a front part 3a, an outer part 3b, and a rear part 3c. Overall, the outer part 3b and the core 26 are made of a material with good magnetic conductivity, so that an effective magnetic field 8 can be generated. The other parts 3a, 3c are preferably made of a material with a (significantly) lower magnetic conductivity than the outer part 3b (preferably a factor of >10). A sealing means 28, e.g., a housing seal made of an elastomer, is arranged between the front part 3a and the outer part 3b and between the outer part 3b and the rear part 3c.

[0071] At least one pivot bearing 15 can be provided or formed between the two brake components 2 and 3. It is also possible that no separate bearing is provided, but rather the magnetorheological braking device 1 provides a pivot bearing 15.

[0072] Figure 3c shows a cross-section through the magnetorheological braking device according to Figure 3b, showing the structure of the brake gap section 5a. Here, the inner brake component 2 has an outwardly projecting star contour or toothing in the area of ​​the brake gap section 5, while the outer brake component 3 has a cylindrical inner wall. This results in a circumferentially variable gap height 5a between the two brake components 2, 3, with periodically alternating minimum gap heights 5b and maximum gap heights 5c. Here, the two brake components 2, 3 are each of the same design in the axial gap direction 5d over the brake gap section 5 and 6, respectively.

[0073] The brake gap section 5 or 6 each has a variable gap height 5a, the variation of which amounts to up to 1%, 2%, or 5% of the diameter of the brake gap section 5. Larger and smaller gap heights are also possible. The brake gap preferably contains magnetorheological particles whose particle diameter is each considerably smaller than the minimum gap height. Preferably, the maximum particle diameter of the magnetorheological particles 7a is smaller than 1 / 5, 1 / 10, or 1 / 100 of the minimum gap height 5b. However, other dimensions of the magnetorheological particles 7a are also possible. The magnetorheological particles 7a are surrounded by a filling medium 7b, which can be a gas, so that dry magnetorheological particles 7a are present in the brake gap 5 or 6. However, it is also possible for an oil or another fluid to be used as the carrier medium.

[0074] Depending on the desired braking effect, the electrical coil unit 24 is controlled. The strength of the braking effect can be significantly increased or decreased within a few milliseconds.

[0075] Figure 4 shows a highly schematic diagram, with the control device 20 being shown in dashed lines in the upper part, which comprises, for example, a control unit 50 and a memory unit 60.

[0076] The control device 20 includes a comparison device 51. An actuation sequence 70, for example in the form of a keyboard sequence 71 or a piece of music 72 or a gameplay sequence 73, for example, of a computer game, is input into an input 22a of the control device 20 and stored in the memory unit 60. Analysis data 76 can be output via the output 22b and displayed, for example, on the screen or display 80 to allow for a simple visual analysis.

[0077] According to the actuation sequence 70, a currently actuated key unit 11a is specified, to which a respective braking device 1 is assigned. The desired braking effect is set or time-controlled on the key unit 11a, and a correspondingly different one is set or time-controlled on all the other or on the surrounding key units 11b to 11e.

[0078] A sensor device 21 detects the actuation of the key unit and returns it to the control device 20, where a comparison is performed in the comparison device 51. The result of this comparison is incorporated into the analysis data 76.

[0079] Figure 5a shows various set or predefined curves 106 of the braking effect 112 over the actuation travel 111. The respective curves 106 can be individually set and depend, for example, on the device 100a or the musical instrument 100b. The actuation force over the travel or pivoting angle varies for different musical instruments, for example.

[0080] When pressing a key unit 11, different forces must be applied for different instruments, but even for the same instrument, the force distribution depends on the speed of the key press. Furthermore, an adapted control is implemented.

[0081] Curve 106b shows the force curve of a harpsichord, curve 107 the force curve of a concert grand piano 101, and curve 109 the force curve of a musical keyboard. Curve 107 shows the force curve at an initial, lower speed of the key unit 11.

[0082] In a grand piano, the horizontal hammer must be accelerated toward the string. Since this is a rotary motion, the required force is initially increased until the hammer detaches from the mechanism (so-called release) and strikes the string with only its momentum. From the point of release, the force required for further movement decreases; the user (in a "real" grand piano - and simulated here) only feels the friction of the mechanism until the key unit hits its stop (end position). There, the movement is slowed or dampened (in reality - and here virtually) by a felt or similar material, preventing the key unit from striking hard. Real pianos (upright pianos, unlike grand pianos) have a slightly different force distribution, as the hammer is not lying, but standing. This, too, can be simulated upon request.

[0083] A harpsichord, on the other hand, "plucks" the strings with a spring. This means that a greater force must be applied at the beginning to pull the spring past or over the string. As soon as the string has been plucked by the spring, the force decreases almost completely, so that the remaining path of the key unit is moved without force. Here, too, the progression can be adjusted accordingly.

[0084] A musical keyboard or a 104-key keyboard typically has only one spring as a return element and key units (usually made of plastic) that have very little mass and thus little inertia. Therefore, the force required to move the key is determined by the spring characteristic of the return spring mechanism, which can also be simulated.

[0085] Basically, the different curves 106 show possible force curves for different input units or musical instruments. The force curve for a currently actuated key unit 11a can also depend on the type and intensity of a note being played. Curve 107 can represent the force curve of a reference curve, while curve 108 shows the curve, for example, when the key is struck too hard.

[0086] Depending on whether a "correct" current key unit 11a or an "incorrect" - namely, for example, a neighboring - key unit 11b is actuated, the force curve is set differently. For a key unit 11a of a keyboard 104 that is currently to be operated, for example, the force curve 109 can be set as the current force curve 106a, while for a neighboring key unit 11b a different force curve 106b is set that requires considerably higher actuation forces, so that the user receives immediate feedback.

[0087] Figure 5b shows, purely by way of example, a force curve 110 when a keyboard 104 is actuated. Two curves 106a and 106b are also shown, with curve 106a, for example, representing a current curve for the key unit 11a that is currently being actuated, while curve 106b is intended for a key unit 11 that is not currently being actuated. It is immediately apparent that, at the start of actuation, the braking effect for a key unit 11a that is currently being actuated is considerably lower than the braking effect for another curve 106b for a key unit that is not currently being actuated. The user therefore knows immediately upon actuation whether or not he has actuated the correct key unit.

[0088] The braking effect curves can also be adjusted depending on the type of device present or simulated. For example, with musical instruments, the key unit currently being played can be simulated with a force curve that corresponds to a real instrument. For key units not currently being actuated, a correspondingly different curve 106b can be selected. If the piece of music is played completely correctly, the player doesn't notice anything. If the wrong key unit is played, the player immediately realizes that they are not playing correctly due to the changed braking effect.

[0089] Overall, the invention can be used in various devices and within the framework of various methods. For example, it is possible for only certain key units of a device 100 to be pressed, depending on the location in the song or in a text or in an actuation sequence 70 to be entered. It is possible to combine such a learning program with virtual reality, for example. Then, using VR glasses or glasses with a built-in display, the user can directly see which key unit they should press or play next. Additional visual aids can also be attached to the key units, or the key units can be illuminated accordingly. For example, LEDs can be integrated that light up when the respective key unit is currently to be pressed.

[0090] In all versions, it is possible for teachers to provide students or users with pieces or tasks to practice. This can be done via a storage medium, as a file by email, directly via a network connection, or by other means. The users or students can then input these pieces via the input interface. The analysis data they collect while operating, playing, or completing the tasks can be saved and evaluated or read out for analysis. This allows the teacher to see what the user or student has practiced and where weaknesses or areas for improvement still exist.

[0091] In all designs, the key units can be individually adjusted to varying degrees of hardness or stiffness for each finger. For example, less force may be required or appropriate for operation with a little finger than with a thumb or index finger. Accordingly, a distinction can be made between the left and right hand, even for different users.

[0092] The actuation force or torque of the key units can then be adjusted according to the fingering of a song or depending on the distance from a starting position "asdf" or "hj kl" of the fingers on a complete computer keyboard. Additional sensor devices, such as a camera with image recognition or the like, can determine which finger is pressing a key unit.

[0093] List of reference symbols:

[0094] 1 Brake device 28 Sealant la Swivel axis 29 Display

[0095] 2 first brake component 31 toothing on 11

[0096] 3 second brake component 32 toothing on 1

[0097] 3a Front part 40 reset device

[0098] 3b Outdoor part 45 Lighting device

[0099] 3c Rear part 46 Lighting unit

[0100] 4 Recording room, gap 47 Camera

[0101] 5 Brake gap section 50 Control unit

[0102] 5a Gap height 51 Comparison device

[0103] 5b minimum height of 5 60 Spei before purity

[0104] 5 c maximum height 5 70 operating sequence

[0105] 5d axial gap direction ( 5 ) 71 keyboard sequence

[0106] 6 brake gap section 72 piece of music

[0107] 7 magnetorheological 73 game flow medium 76 analysis data

[0108] 7a Particle 80 Display

[0109] 7b Filling medium 81 VR display

[0110] 8 Magnetic field 82 Glasses

[0111] 9 Magnetic field generation100 device 100a device

[0112] 10 Input unit 100b Musical instrument

[0113] 10a Supporting body 101 Concert grand piano

[0114] 11 Key unit 102 Piano l la- f Key unit 103 Keyboard, music keyboard

[0115] 12 first position 104 keyboard

[0116] 13 second position 105 resonance body

[0117] 14 Signal 106 Course of braking effect

[0118] 15 Pivot bearing 106a current course

[0119] 16 Tone 106b other course

[0120] 17 Sound signal 107 Force curve of 101

[0121] 20 Control device 108 Force curve of 101

[0122] 21 Sensor device 109 Force curve of a music

[0123] 21a sensor component keyboards

[0124] 21b Sensor component 110 force curve (keyboard)

[0125] 22 Connection 111 Actuation travel (way,

[0126] 22a Input angle )

[0127] 22b Output 112 Braking effect ( force ,

[0128] 24 electrical coil unit moment)

[0129] 25 switches

[0130] 26 core

[0131] 27 Sealing device

Claims

Claims:

1. Device (100) comprising at least one control device (20) and a storage unit (60) and an input unit (10) on which at least a plurality of key units (11) for generating signals (14), wherein the key units (11) are each movable between at least two positions (12, 13) via an actuation path (111) and trigger at least one signal (14) at least when moving from the first position (12) to the second position (13), characterized in that at least some key units (11) are assigned at least one electrically controllable braking device (1) in order to brake a movement of the key units (11) in a controlled manner, and in that the control device (20) is set up and designed to predetermine an actuation sequence (70) of key units (11) and in that a braking effect of at least one of the key units can be set depending on the actuation sequence.

2. Device (100) according to the preceding claim, wherein at least one braking device (1) comprises a magnetorheological medium (7) and can be subjected to a controllable magnetic field (8) of at least one magnetic field generating device (9) in order to set an electrically controllable braking effect.

3. Device (100) according to the preceding claim, wherein at least one braking device (1) comprises at least one braking gap section (5, 6) which is equipped with the magnetorheological medium (7).

4. Device (100) according to the preceding claim, wherein the brake gap section (5, 6) is pivotable about a pivot axis (1a) of the Braking device (1) is curved. Device (100) according to one of the preceding claims, wherein the control device (20) is configured and designed to set a freely adjustable profile (106) of the braking effect (112) over the actuation path (111). Device (100) according to the preceding claim, wherein the control device (20) is configured and designed to set a profile (106a) of the braking effect (112) over the actuation path for a key unit (11a) currently to be actuated. (111) and, for another key unit (11), to set a different profile (106b) of the braking effect that differs therefrom. Device (100) according to one of the preceding claims, wherein the control device (20) is designed and configured to apply a lower braking effect to a key unit (11a) that is currently to be actuated based on the actuation sequence (70) and to apply a greater braking effect to at least one other key unit (11b-11d). Device (100) according to one of the preceding claims, wherein the control device (20) is designed and configured to apply a different profile (106b) of the braking effect to key units (11b-11d) that are arranged adjacent to a key unit (11a) that is currently to be actuated based on the actuation sequence (70).Device (100) according to one of the preceding claims, wherein the control device (20) is designed and configured to apply a different course (106b) of the braking effect to all key units (11b-11e) which are not currently being actuated due to the actuation sequence (70). are. Device (100) according to one of the preceding claims, wherein at least some key units (11) can be illuminated in a controlled manner by at least one lighting device (45). Device (100) according to one of the preceding claims, wherein at least some key units (11) each comprise at least one lighting unit (46). Device (100) according to one of the two preceding claims, wherein the control device (50) is set up and designed to illuminate a key unit (11a) that is to be actuated currently on the basis of the actuation sequence (70). Device (100) according to one of the preceding claims, wherein at least one display (80) is included. Device (100) according to the preceding claim, wherein an image of the plurality of key units (11) can be shown on the display (80), and wherein the control device (50) is set up and designed to optically highlight the key units (11) according to the actuation sequence (70).Device (100) according to one of the two preceding claims, wherein a VR display (81) or a display on glasses (82) is formed and optically highlights button units (11) selectively according to the actuation sequence (70). Device (100) according to one of the preceding claims, wherein at least one sensor device (21) is included. Device (100) according to the preceding claim, wherein the control device (20) is set up and designed to use the sensor device (21) to detect an actuation of a. Key unit (11). Device (100) according to one of the two preceding claims, wherein a plurality of sensor devices (21) is provided for the plurality of key units (11) in order to detect an individual actuation of the key units (11). Device (100) according to one of the three preceding claims, wherein the control device (20) is set up and designed to detect a speed of an actuation of at least one key unit (11) with the sensor device (21). Device (100) according to one of the four preceding claims, wherein the control device (20) is set up and designed to store measured values ​​of the sensor device (21) in the memory unit (60) in order to enable later evaluation.Device (100) according to one of the five preceding claims, wherein the control device (20) is set up and designed to detect time intervals between the actuation of key units (11) and to store them in the memory unit (60) in order to enable later evaluation. Method using a device (100) comprising at least one control device (20) and a memory unit (60) and an input unit (10) on which at least a plurality of key units (11) for generating signals (14) are received, wherein the key units (11) are each movable between at least two positions (12, 13) and trigger at least one signal (14) at least when moving from the first position (12) to the second position (13), and wherein at least. at least one electrically controllable braking device (1) is assigned to some key units (11), characterized in that an actuation sequence (70) of key units (11) is predetermined and the controllable braking device (1) is controlled as a function of the actuation sequence in order to specifically control a braking of at least one of the key units. Method according to the preceding claim, wherein key units (11b, 11c) are braked differently than a key unit (11a) that is currently to be actuated. Method (100) according to one of the two preceding claims, wherein all key units (11b-11f) are braked differently than a key unit (11a) that is currently to be actuated. Method (100) according to one of the three preceding claims, wherein a key unit (11a) that is currently to be actuated is illuminated. Method (100) according to one of the four preceding claims, wherein measured values ​​relating to the actuation of the key units (11a) are stored.Method (100) according to one of the five preceding claims, wherein the measured values ​​from the actuation of the key units (11a) are compared with preset values ​​from the actuation sequence (70). Method (100) according to one of the six preceding claims, wherein measured values ​​from different operating processes are compared with one another, and an analysis value is determined and stored. Method for learning the operation of a device (100). according to one of claims 1 to 21, wherein an actuation sequence (70) of key units (11) is predetermined and wherein, depending on the actuation sequence, at least one braking device is controlled and thus a braking effect of at least one of the key units is set in a time-controlled manner.

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