DE102015209590A1 - Operating device and operating method with extended functionality and improved haptic feedback - Google Patents

Abstract

An operating device (1) for a motor vehicle (3) comprising: a touch-sensitive position detection device (30) having a contact surface (31) for detecting at least one contact position; at least one pressure force measuring device (40) for determining a pressure force acting on the contact surface (31) during a touching operation of the operating device (1); at least one actuator device (50) coupled directly or indirectly to the contact surface (31) for selectively moving the contact surface (31); wherein at least one triggering area (505) on the contact surface (31) and at least one pressure force threshold is assigned to at least one virtual operating element (501); and wherein the at least one compressive force threshold is associated with at least one function; and a controller (80), which is designed to determine, depending on the at least one detected contact position (502) and a comparison of the determined pressure force with the pressure force threshold (411), whether a correct haptic actuation of the at least one virtual operating element (501) is present and, if so, selecting the at least one function associated with the at least one compressive force threshold of the at least one virtual control element (501) and driving the at least one actuator device (50) to provide haptic feedback (503) to the Create contact surface (31), wherein the at least one virtual control element is associated with at least one further pressure force threshold, wherein the at least one further pressure force threshold is greater than the at least one pressure force threshold, and wherein the at least one further pressure force threshold is associated with at least one further function; and wherein the controller (80) is configured to additionally compare the determined pressure force with the at least one further pressure force threshold (421) and, if the at least one detected touch position (31) in a trigger region (505) of the at least one virtual control element (501). is to perform a selection or selection of the various the virtual control element (501) associated functions depending on the comparison results and each upon reaching or exceeding one of the pressure force thresholds (411, 421) to generate an actuator activation signal (106), wherein the actuator activation signal (106) is configured to cause a haptic feedback (503) on the contact surface (31) via the actuator device (50). Furthermore, the invention relates to the associated method.

Description

The invention relates to touch-sensitive operating devices which generate a haptic feedback upon actuation of a virtual operating element.

In modern motor vehicles, a variety of functions and vehicle systems are to operate. Since a space in the vehicle is limited and thus not for each vehicle system and each vehicle function a single special functions and the vehicle system associated control element can be formed and arranged, it is common today to operate a variety of such vehicle systems and operating functions via a multi-function control device or to make operable. Such multifunction operating devices, which are typically arranged in a center console of a motor vehicle or at other positions readily accessible to the driver in the motor vehicle, usually comprise both virtual operating elements, which are not physically self-contained by means of a touch-sensitive position detection device, as well as physically trained controls such as buttons, rotary encoder or the like. The individual physically trained and the virtual controls can then be assigned different functions in different operating contexts.

In further developments of these multifunction operating devices, the display elements are assigned to the operating elements. The display surfaces can be formed both statically, for example in the form of a printed with a symbol or name film, or as freely programmable display surfaces on which any graphical content can be displayed. The display area or freely programmable display area is then assigned a touch-sensitive position detection device. Here, positions on a touch surface of the touch-sensitive position detecting device correlate with positions on the display surface. If the contact surface of the touch-sensitive position detection device is transparent and arranged in front of a freely programmable display surface, the combination of freely programmable display surface and touch-sensitive position detection device is referred to as touchscreen.

In other developments, the operator receives after a successful operation of a virtual control element haptic feedback. This is to simulate the haptic feedback when operating a physically trained switch or button. This allows, in particular in motor vehicles, a blind operation of the multifunction control device.

Developments are known from the prior art, in which an actuator is coupled to the touch-sensitive position detection device. The actuator causes a mechanical vibration or deflection to produce a tactile, that is haptic perceptible, feedback.

The DE 10 2006 012 147 A1 describes an input device, in particular for a motor vehicle, wherein the input device comprises a housing, an information display device arranged in the housing, a touch-sensitive position detection device arranged above the display device for inputting commands by touching the contact surface and an actuator for moving the touch-sensitive Position detecting device or the housing in at least one direction, wherein the housing is movable relative to the display device.

From the DE 10 2008 035 907 A1 is an input device with a control panel for contact by a movable via the control panel actuator or a finger of an operator with means for detecting the position and / or movement of the actuating element or the finger on the control panel and an evaluation unit for generating a control signal corresponding to the detected size known. The input device is characterized in that the control panel in the direction of contact from the rest position due to a contact force generated by the actuator or the finger elastically yielding or elastically yielding and thereby acts on at least one separate pressure sensor to generate a signal proportional to the contact force and the whose signal is supplied to the evaluation unit for generating a further control signal. Furthermore, a corresponding method is described. Shown is an embodiment in which an actuator for generating a haptic feedback by means of a vibration depending on the detected contact force is switched on and off. If a switch-on threshold value of the contact force is exceeded, the actuator system for generating the vibration is switched on, and if the switch-off threshold value of the contact force is undershot, the actuator system for generating the vibration is switched off. The switch-on threshold and the switch-off threshold differ in order to avoid unintentional switching on and off of the haptic feedback at a pressure force in the range of the switch-on threshold. Thus, an "on-off hysteresis" is realized.

Out DE 10 2008 046 102 A1 an operating element is known which comprises a sensor element and a voice coil connected thereto. The sensor element is used to detect an actuation, the voice coil to generate a haptic feedback after actuation. As a possible application while a switch is described with multiple switching thresholds.

The embodiments described in the prior art provide only a very limited scope of functions for each virtual control element.

The invention is therefore based on the technical object to provide an improved operating device, with the particular range of functions in blind operation, especially in a blind operation in a motor vehicle, can be improved.

The invention is achieved by an operating device having the features of patent claim 1 and a method having the features of patent claim 8. Advantageous embodiments will be apparent from the dependent claims.

The invention is based on the idea of evaluating, in addition to the touch position, the contact force or pressing force exerted perpendicularly to the contact surface by an actuating element in order to provide a larger range of functions for a virtual operating element. At least two force thresholds are defined, which are linked to at least two different functions. Depending on a comparison of the pressure force with the individual pressure clamps associated functions are selected or selected and it is simultaneously generated and output at the same time reaching or exceeding the individual pressure force thresholds haptic feedback via an actuator. The virtual control element is preferably assigned a graphic display on a static display area or a freely programmable display area of a display device.

By providing at least two pressure force thresholds, each associated with a function that are different from each other, and providing haptic feedbacks generated when the at least two pressure force thresholds are reached or exceeded, a virtual control element is provided, at least for a blind person Double operation is suitable. Without requiring further installation space, an operable range of functions can be significantly expanded. Here, a blind operation is ensured, so that a security of operability and reliability, for example, maintained in a motor vehicle or even increased.

In order to be able to trigger different functions, it is in the cases in which the different functions can now be assigned to the same virtual control element, i. the different pressure force thresholds are assigned, no longer necessary to change a position of an actuating element, such as a finger on the contact surface. A look away from the traffic to position the actuator over another virtual or in hardware running control, can be omitted. This increases road safety and minimizes incorrect entries. Furthermore, ease of use is increased.

definitions

As a freely programmable display device, a device is understood with a display surface, in which at the same position of the display surface time sequentially different information can be displayed graphically. Since this is controlled by a program-controlled device, is spoken by a freely programmable display device. A display area of such a freely programmable display device is referred to as a freely programmable display area.

A touch-sensitive position detecting device is a device which has a contact surface, which is usually planar and smooth, and which is adapted to determine a location of contact by an actuator. Such a specific location is called touch position. Touch-sensitive position detecting devices capable of simultaneously detecting a plurality of touch positions are referred to as multi-touch position detecting devices or multi-touch capable devices. These represent a subset of the touch-sensitive position sensing devices.

If the contact surface is designed to be transparent and coupled to a freely programmable display surface arranged behind it, the entire device is referred to as a touchscreen. Again, there is again the division into single touch-sensitive touchscreens and multi-touch touchscreens, which can simultaneously detect multiple touch positions of actuators.

As an actuating element, an object is designated, which is suitable for actuating the touch-sensitive position detection device. Usually this is about a body part, for example an outstretched finger, particularly preferably an index finger. Alternatively, however, a pin or other object can serve as an actuating element.

As a virtual control element, the design of an operating element is designated via a trigger region on a contact surface of a touch-sensitive position detection device. Within the trigger area, touch positions are considered to be the selection of the corresponding virtual control element. In this case, the virtual operating element is generally additionally assigned a graphic representation, for example in the form of a print, on the display surface or a graphic representation on a freely programmable display device.

As a pressure force measuring device, any measuring device is designated which is able to measure a force acting on the actuation of the contact surface of a position detecting device perpendicular to the contact surface actuating force. In this case, all sensor types and sensors, or sensor elements in question, which allow such a measurement.

Control of a device is a set of all components which are provided for an evaluation of detected signals or user inputs and / or for a control of components of the device and / or other devices. The components of the controller may be implemented in hardware and / or software or combinations of hardware and software.

Haptic feedback describes an effect perceptible by the human sense of touch for the purpose of providing feedback to a user of a device.

As far as mention is made here of the detection or determination of the pressure force, a detection or detection is provided which is separate from the touch-sensitive position detection. This is usually done with at least one additional in addition to the touch-sensitive position detection device pressure force measuring device.

As different functions are understood functions that cause different tasks or effects.

Selecting or selecting a function refers to the logical selection of a function associated with a virtual control without triggering. A selected function does not have to be triggered and can also be deselected.

Triggering a function means executing the task or effect associated with the function, which function must be off or selected before triggering. A selection and release can also be done at the same time.

A compressive force threshold is a force threshold for a pressure force associated with selecting or selecting a function associated therewith. Actions or events that depend on the pressure force threshold, are connected to the exceeding of the pressure force threshold by the determined pressure force.

A release force threshold is a force threshold associated with a pressure force threshold which has a value less than the associated pressure force threshold. For a release force threshold is examined whether the pressure force falls below this. Possible actions or events are dependent on this falling below the release force threshold by the determined pressure force.

A pressure force threshold and an associated release force threshold can each be combined to form a force threshold pair. Several pairs of force thresholds can be classified according to the sizes, i. order the force thresholds, the respective pressure force thresholds.

Preferred embodiments

In particular, there is thus provided an operating device for a motor vehicle, comprising: a touch-sensitive position detecting device having a contact surface for detecting at least one touch position; at least one pressure force measuring device for determining a force acting on the contact surface pressure force in a touching operation of the operating device; at least one actuator device directly or indirectly coupled to the contact surface for targeted movement of the contact surface; wherein at least one virtual operating element at least one triggering area on the contact surface and at least one pressure force threshold is assigned; and wherein the at least one compressive force threshold is associated with at least one function; and a controller, which is designed to determine, depending on the at least one detected contact position and a comparison of the determined pressure force with the pressure force threshold, whether a correct haptic actuation of the at least one virtual operating element is present, and if this is the case, the at least one Function, which is assigned to the at least one pressure force threshold of the at least one virtual control element to select and the to control at least one actuator device to generate a haptic feedback on the contact surface, the at least one virtual control element is associated with at least one further pressure force threshold, wherein the at least one further pressure force threshold is greater than the at least one pressure force threshold, and wherein the at least one further pressure force threshold at least another function is assigned; and wherein the controller is designed to additionally compare the determined pressure force with the at least one further pressure force threshold and, if the at least one detected touch position lies in a trigger region of the at least one virtual control element, a selection or selection of the various functions assigned to the virtual control element depending on execute the comparison results and each generate an actuator activation signal when reaching or exceeding one of the pressure force thresholds, wherein the actuator activation signal is configured to cause via the actuator means a haptic feedback at the contact surface.

Furthermore, there is advantageously provided a method of operating functions comprising the steps of: defining a trigger region of a virtual control on a touch-sensitive position sensing device, assigning a pressure force threshold to the at least one virtual control; Assigning at least one function to the pressure force threshold; Detecting touch positions on the touch-sensitive position detection device, determining a pressure force upon a touch operation of the touch surface; Evaluating the detected touch positions and comparing the pressing force with the pressure force threshold and determining whether a correct haptic actuation of the virtual control element is present, and if so, selecting or selecting at least one assigned to the at least one virtual control element and generating a haptic feedback the contact surface, wherein the at least one virtual control element is assigned at least one further pressure force threshold which is greater than the one pressure force threshold, and wherein the further pressure force threshold is assigned at least one further function, and it is checked whether the at least one detected contact position in a tripping region of At least one virtual control element is, comparing the determined pressure force with the at least one further pressure force threshold, and, if the touch position is in the trigger region, selecting or selecting the various the virtual control element associated functions depending on the comparison results of the pressing force with the pressure force thresholds and generating an actuator activation signal when the pressing force reaches or exceeds one of the compressive force thresholds, and wherein the respective actuator activation signal is supplied to a coupled with the contact surface actuator device that the haptic feedback causes at the contact surface.

The advantage of the invention is that it becomes possible to link a virtual operating element with a plurality of switching thresholds and thus to provide an extended range of functions to an operator. The operator is less likely to reposition the actuator, such as his finger, on the touch-sensitive position sensing device because he can perform multiple functions by a single actuation of a virtual operator at the same touch position. This increases the user-friendliness, there are fewer operating errors and the safety and comfort of driving the vehicle increases.

In a development, it is provided that the detected pressure force is compared with the force threshold values of n ordered force threshold pairs. Thus, n functions can be operated with a virtual control element, where n is a natural number greater than or equal to 2. A force threshold pair comprises in each case a pressure force threshold and a release force threshold, wherein the release force threshold is always smaller than the associated pressure force threshold. Upon reaching or exceeding one of the pressure force thresholds by the detected actuation force or pressure force, a first haptic feedback is transmitted back to the user via the contact surface and a function associated with the virtual control element associated with the touch position can be triggered. This first haptic feedback is to convey to the user that he has pressed down the virtual control element with a sufficient actuating force, so that now a function triggering can be done or has taken place. If, after the pressure force threshold has been exceeded by the determined pressure force, the associated release force threshold again falls below the determined pressure or actuation force, so preferably a second preferably different from the first haptic feedback feedback via the contact surface of the touch-sensitive position detection device to the user output and if necessary, the previously activated function is deactivated again or else the function triggering of the function selected or selected when the pressure force threshold is exceeded is executed. Thus, at least one function associated therewith can be triggered for each of the individual force thresholds of the n-ordered force threshold pairs. At each pressure force threshold, a haptic feedback is given. The haptic feedbacks of the individual Pressure force thresholds may differ.

The advantage is that a much larger range of functions can be realized per virtual control element, so that multiple occupancy of a virtual control element is possible. An operation is thereby considerably simplified and accelerated, since the operator less often the actuating element, such as his finger, must lift off.

Furthermore, the operating device according to the invention or the inventive method for detecting a user input via a touch-sensitive position detection device can convey a haptic feedback, which is as close as possible to that of a mechanical operating element, so that a blind operation is simple and reliable by a user, in particular without Blickzuwendung possible ,

This user-experienced feedback scheme largely matches the haptic sensation that a user experiences when operating a physically-trained key. For example, a first haptic feedback corresponds to the pressing of a control against a stop and a second haptic feedback associated with a release force threshold with the haptic feedback occurring, for example, by springback of an elastic member upon release of a mechanical key.

By defining and comparing with n ordered force threshold pairs, the haptic sensation of multilevel switches and buttons can be faithfully reproduced and each of the individual stages linked to the individual force threshold pairs linked to their own function, which is triggered when a certain force threshold is exceeded and / or undershot.

Overall, this increases the interactivity in the operation of the vehicle systems, resulting in an increased user value for the operator, which is reflected in a safer operation, increased comfort and, above all, increased safety when driving the vehicle.

It is also achieved by introducing the release force thresholds and providing associated haptic feedback that is haptically conveyed to a user when he changes from a "higher notch" of the virtual control to a lower one. One embodiment therefore provides that each of the different pressure force thresholds is assigned a release force threshold which is smaller than the corresponding pressure force threshold and the controller is designed to compare the determined contact pressure force with the release force thresholds and to generate an actuator activation signal which falls below the release force thresholds the coupled with the contact surface actuator device is supplied, so that a haptic feedback is effected on the contact surface.

In some embodiments, it is contemplated that the lower "detents" associated with lower pressure force thresholds will not be traversed again when a function or detent stage associated with a second or third force threshold pair of an ordered series of force threshold pairs has been serviced. An embodiment of the invention therefore provides that at least two of the release force thresholds are the same. All release force thresholds can be the same.

The type of triggering required in each case results from the present context of the function. If, for example, two different types of functions are combined with a virtual operating element, it is sufficient to trigger these functions when the respective pressure force thresholds are exceeded. This may for example be the case when a piece of music is to be taken from a list by a slight operation of a virtual control element in a playlist, whereas it should be played immediately by a strong operation. These two pairs of force thresholds are necessary. Exceeding the pressure force threshold of the first pair of force thresholds then takes the piece of music in the playlist, exceeding the pressure threshold of the second force threshold pair then triggers the immediate playback of the piece of music. A subsequent undershooting of the release force thresholds of the two force threshold pairs triggers then no function, but only a haptic feedback from.

In this simplest application, various functions that are triggered with different force thresholds are operated with a virtual control element. In one embodiment, therefore, there is a triggering of the associated with a compressive force function when the pressure force threshold is exceeded. In addition, a haptic feedback at the actuator device takes place at the same time. In this way, multiple assignments of virtual controls can be realized. For example, in a telephone book, a detail view of a contact could be invoked by exceeding a first pressure force threshold, whereas exceeding a second pressure force threshold triggers a call of that contact. An embodiment therefore provides that each of the different pressure force thresholds in each case one Enabling force threshold is associated, which is smaller the corresponding pressure force threshold and the controller is designed to compare the determined pressure force with the release force thresholds and falls below the release force thresholds to generate an actuator activation signal which is supplied to the coupled with the contact surface actuator device, so that a haptic Feedback is effected on the contact surface.

In order to operate an operation of a function associated with a higher pressure force threshold without having to operate one or more functions associated with lower pressure force thresholds, especially for pressure force thresholds which do not represent the highest pressure force threshold associated with the virtual control element be provided that at least one function of the at least two associated with the virtual control various functions is only triggered or that at least a second additional associated with the virtual control function is selected or selected and, if provided, is triggered when the pressure force the has exceeded with this at least one function associated compressive force threshold and a predetermined duration above the pressure threshold associated release force threshold, without during the duration of a higher pressure force threshold, if any, ü is exceeded. A particularly advantageous embodiment of the operating device therefore provides that the controller is designed to trigger at least one of the at least two associated with the at least one virtual control various functions only when the determined pressure force has exceeded the pressure threshold associated with this function and the determined pressure force for a certain duration is within a compressive force activation range, the lower limit of which is given by the release force threshold associated with the compressive force threshold associated with that function and whose upper limit, if any, is given by a next higher one of the different compressive force thresholds.

The determined dwell time of the pressure force in the pressure force activation area can also be used to add another dimension in the interactive operation. In addition to the time-dependent function triggering, a parameter can also depend on the dwell time.

For example, the speed during fast-forward of a song can be set over the residence time in a certain range of values of the pressure force. For example, the speed can be increased gradually in proportion to the dwell time. Such a stepwise increase of the speed as a function of the dwell time could also be implemented by enlarging or reducing the representation of a map or an image.

In a further embodiment it is provided that the function associated with a release force threshold is triggered when it is undershot. An embodiment of the operating device provides that the controller is designed to trigger at least one of the at least two associated with the at least one virtual control element, different functions only when the determined pressure force, after this had exceeded the pressure threshold associated with this function, the the Druckkraftschwelle belonging release force threshold, which is smaller than the associated pressure force threshold falls below.

A further possibility for the interactive extension of the functionality opens up by selecting or selecting at least one second additional function which is assigned to the same pressure force threshold as the at least one or the at least one further function after the pressure force remains in the pressure force activation range for a predefined period of time Has. An embodiment thus provides that at least one of the pressure force thresholds (the at least one pressure force threshold or the at least one further pressure force threshold) is or is additionally assigned a second function which is selected or selected after the pressure force has exceeded at least one of the Pressure force thresholds in the pressure force activation range has lingered for a predetermined period of time.

Preferably, simultaneously with the selection or selection, the at least one second additional function is also triggered. This can also be delayed in one embodiment.

In one embodiment, it is provided that with the selection or selection of the at least one second additional function after the predefined period of time, the at least one function already selected when the associated pressure force threshold has been exceeded is deselected. This makes it possible to deselect a function which is selected or selected by exceeding a pressure force threshold and which would be triggered if the associated release force threshold is undershot, after reaching the predefined time duration, so that it is no longer triggered in the event of a subsequent falling below the associated release force threshold.

A function initially selected or selected when an overpressure threshold is exceeded Thus, when the pressure force threshold is exceeded, after reaching the predetermined duration, when the associated release force threshold is not reached, or even not triggered.

The embodiments described above enable implementation of interactive schematics with extended functionality. For example, multistage switches can be implemented in this way, in which only one parameter value changes during the execution of a function otherwise similar to the function due to the multiple switching thresholds. For example, such a volume control can be realized with different volume changes quickly.

In the case of similar functions, which merely have a different parameter value, a function release or state change, on the other hand, is necessary both when the pressure force threshold is exceeded and when it falls below the release force threshold. If, for example, a two-stage fast forwarding is performed when playing a piece of music, there are, for example, three states, which are implemented with the aid of two pairs of force thresholds. The normal state is the state Play. If now the pressure force on the virtual control element, which is associated with a fast-forward, increases, the state changes when the pressure force threshold of a first pair of force thresholds on the state fast-forward. If the pressure force is further increased and the pressure force threshold of the second force threshold pair is exceeded, the state changes to fast forwarding. The pressure force will now be maintained until the sought place in the piece of music in the immediate vicinity. Subsequently, the pressing force is reduced again and falls below the release force threshold of the second pair of force thresholds jump back to the previous state, so the state changes again to fast-forward, so that the searched point can be approached slower. If the location found, the pressure force is further reduced and falls below the release force threshold of the first pair of force threshold is switched back to the playback state. Here it is favorable to create a haptic feedback with each of the force thresholds.

In particular, it is often favorable to be able to distinguish the exceeding of a pressure force threshold from the undershooting of a release force threshold. One embodiment therefore provides that the controller is configured to generate the actuator activation signals in such a way that the haptic feedbacks generated at the contact surface, which are associated with exceeding one of the compressive force thresholds, and the haptic feedbacks generated at the contact surface, which are different from falling below one of the release force thresholds.

It has been shown on the basis of perceptual psychological studies that an acoustic feedback output simultaneously with the haptic feedback increases the perception of the haptic feedback.

In a particularly preferred embodiment, therefore, the operating device comprises a loudspeaker and the controller is designed to output a sound when the pressure force thresholds and / or the release force thresholds of the n-ordered force threshold pairs are exceeded or fallen short of. Such a sound can be, for example, a sound sample. In this way it is possible to supplement the haptic impression of a physically formed switch or a button by an acoustic feedback. This results in an even better imitated impression of operating a physically designed switch or button.

In order to enable dynamic interaction in various operating contexts, it may be desirable to implement a variable graphical representation to display different virtual controls on a display context-dependently. A further embodiment therefore provides that the operating device comprises a display device with a freely programmable display area for displaying the at least one virtual operating element, wherein the display device is positioned behind the contact surface of the touch-sensitive position detection device and visible therethrough. In this way it is possible, depending on the context, to represent graphical representations of various virtual operating elements. For example, such a freely programmable display area can be realized with a touch-sensitive position detection device in the form of a touchscreen.

The invention will be explained in more detail with reference to preferred embodiments with reference to the figures. Hereby show:

1 a schematic representation of an operating device and its arrangement in a motor vehicle;

2 a schematic representation of a haptic control;

3 an exploded perspective view of the back of an embodiment of the operating device;

4 a front view of an embodiment of the operating device, wherein the touch-sensitive position detection device and the freely programmable display device are arranged one behind the other;

5 a schematic representation of individual thresholds of force threshold pairs at different pressure forces;

6 a schematic representation of the force curve with the triggering of the force thresholds of a force threshold pair;

7 a schematic representation of the force curve with the triggering of the force thresholds of two pairs of force thresholds;

8th a schematic embodiment for explaining an application for controlling a music playback;

9 another schematic embodiment for explaining an application for controlling a music reproduction;

10 a schematic embodiment for explaining an application for radio control;

11 a schematic embodiment for explaining an application for selecting contacts when making a call;

12 a schematic embodiment for explaining an application for controlling a navigation system;

13 a schematic embodiment for explaining an application for entering a text via a touch screen;

14 a schematic embodiment of the operating device in a steering wheel;

15 a schematic embodiment of the operating device in a steering wheel for explaining an application as cruise control;

16 a schematic flow diagram of the method.

In 1 is schematically a motor vehicle 3 with a control device 1 shown. The operating device 1 includes a control unit 2 with a housing 5 which is usually arranged in the area of the dashboard, but particularly preferably in a center console.

In the case is a touch screen 10 arranged, which is a freely programmable display device 20 and a touch-sensitive position detecting device associated therewith 30 includes. In most embodiments, a display area is 21 the freely programmable display device 20 firmly with a touch surface 31 the touch-sensitive position detecting device 30 connected. In any case, at least the contact surface 31 the touch-sensitive position detecting device 30 movable relative to the housing 5 , preferably elastic, stored.

A display controller 25 controls the display of information on the display area 21 , A position detection control device 35 is designed such that these coordinates for detected contact positions of a touching operation of the contact surface 31 determined by an actuating element (not shown). The contact surface 31 is transparent and can be placed in the display area 21 be integrated. Through the contact surface 31 through are thus on the display surface 21 displayed information, such as graphic characters, pictograms, graphical representations of controls and the like, visible.

With the touch surface 31 or, if the contact surface with the freely programmable display device 10 firmly connected to the touch screen 10 is a pressure force measuring device 40 coupled, which is capable of a touching operation one perpendicular to the contact surface 31 to measure on this acting operating force. For example, with the touch surface 31 one or more sensor elements 41 be connected, which at a deflection of the contact surface 31 generate a signal from a pressure measuring controller 45 in a pressure force signal 46 is converted, which indicates the determined pressing force or operating force. Furthermore, with the contact surface 31 or, if the contact surface 31 firmly with the display surface 21 connected to the touch screen 10 at least one actuator device 50 coupled to an actor 51 comprising, by an actuator control device 55 is controlled.

The operating device 1 further includes one in the housing 5 arranged haptic control device 100 , which at least with the pressure measuring control device 45 , ie the pressure force measuring device 40 , and the actuator control device 55 ie with the actuator device 50 , connected is. The haptic controller 100 is formed, based on the detected pressure forces actuator activation signals 106 to generate that then from the actuator control 55 be implemented so that the actor 51 the contact surface 31 the touch-sensitive Position sensing device 30 deflects, so that a haptic perceptible effect arises.

In the simplest embodiment, the haptic control device checks 100 the detected pressing force or operating force against a pressure force threshold or a pressure force threshold, for example one of n ordered force threshold pairs. If a pressure force threshold or a pressure force threshold value is reached or exceeded by the determined pressure force, then a first actuator activation signal is generated 106 which generates a first haptic feedback via the actuator control device 55 and the actor 51 at the contact surface 31 causes. Subsequently, after the pressure force threshold or the pressure force threshold has been reached or exceeded by the detected pressure or actuation force, a pressure force threshold or a pressure force threshold of a further one of the n ordered force threshold pairs is reached or exceeded by this a further first actuator activation signal 106 generated. If, however, a release force threshold or a release force threshold value of one of the n ordered force threshold pairs, which in each case is less than the pressure force threshold belonging to the same force threshold pair, is reached or undershot by the pressure force, a second actuator activation signal is generated 106 generated, which via the actuator control device 55 and the actor 51 a second haptic detectable effect on the contact surface 31 causes.

Preferably, the two detectable haptic effects are different for each of the n ordered force threshold pairs, so that a user can distinguish them. Particularly preferably, the haptic effects are carried out as brief as unique as possible deflections of the contact surface. These preferably differ in terms of the deflection amplitude, wherein the deflection amplitude in the haptic effect generated by the first actuator activation signal is preferably greater than in the haptic effect triggered by the second actuator activation signal. But there are also other waveforms for generating the haptic feedback possible.

In order to improve the sensory perception by a user, especially around button controls better through the touch screen 10 to be able to reproduce is preferably by the haptic control 100 also each a sound activation signal 108 to a sound generator 60 spent on or on the case 5 arranged speakers 70 synchronized with the over the actuator 51 caused deflection of the contact surface 31 emits a sound signal or a sound. This is preferably in the haptic control device 100 a delay device 160 provided which the corresponding actuator activation signal 106 and the sound activation signal 108 to delay each other so that a maximum deflection of the contact surface 31 occurs simultaneously with the output of the sound signal. Due to the output of the sound signal synchronized in time with the haptic feedback, a user-familiar sensory perception of a key operation is better reproduced.

This is due to the arrangement of the speaker 70 on or in the housing 5 ensures that the user due to his spatial hearing correlates the output acoustic sound signal with the haptic effect, as this is perceived as coming from the location of the touch. The feedback effect is strengthened. It has been found that the feedback, which is supported by an acoustic sound signal output locally adjacent to the touch surface, is perceived as more intense feedback. It has also been found that a haptic feedback with a reduced mechanical deflection, which is complemented by a locally synchronized output sound signal, is perceived as intense as a feedback with increased mechanical deflection without sound support. A weaker actuator can thus be used if a synchronized, locally output sound support is used. In this way, furthermore, wear due to a lower deflection of the contact surface is minimized in the case of a feedback effect that is perceived almost as intensively by a user.

The haptic controller 100 is with the position detection control device 35 coupled so that the haptic control device 100 additionally checks whether the detected touch position is in a triggering area of a virtual control element. If this is the case, the actuator activation signals are output 106 and optionally the sound activation signals 108 when the pressure force thresholds or compressive force threshold values are exceeded and during the subsequent undershooting of the release force thresholds or the release force threshold values. In addition, the haptic control device 100 be designed so that it determines based on the detected contact position, the triggering range in which the touch position is detected while one of the force thresholds is exceeded or undershot and determine one or more functions over this, which are assigned to the corresponding triggering area and the corresponding force threshold. Thus, it is possible that the haptic control device 100 generates one or more signals for triggering the function and, for example, via an interface 90 outputs.

Often, the human machine interface logic is not fully in the haptic controller 100 the operating unit implemented, but is at least partially in a central computer 200 implemented via a central computer interface 210 and a bus 300 with the interface 90 the control unit 2 connected is. In a particularly preferred embodiment, the central computer transmits 200 at least information about the triggering ranges and force thresholds of the individual virtual control elements for which the various haptic feedback effects for the individual pressure and release force thresholds of the n ordered force threshold pairs are to be output during a touching operation with the sufficient pressure force, as explained above.

Thus, regardless of a transmission time of information to the central computer and its processing time, the haptic controller is able to promptly generate the haptic feedbacks, as long as the detected touch position is detected within one of the firing regions while one of the pressure force thresholds is exceeded below the release force thresholds.

However, embodiments are also possible in which the entire or almost the entire functionality of the haptic control device 100 , as described so far, in the central computer 200 implemented. The determined pressing force values and detected contact positions are then transmitted to these. The central computer 200 then evaluates the touch position to the effect that it is determined whether this is in a triggering range of one of the virtual controls, the virtual controls are each associated with at least two pressure force thresholds and at least two associated functions. This evaluation thus selects one or more functions to be triggered. If such a selection is successful, the transmitted pressing force values are additionally evaluated and compared with pressure force thresholds, ie compressive force threshold values. If one of these is reached or exceeded, the first actuator activation signal is sent from the central computer via the bus 300 to the haptic controller 100 or directly to the actuator controller 55 transfer. Similarly, in addition, a sound activation signal either via the haptic controller 100 or directly to the sound generator 60 be transmitted. Preferably, only activation information is transmitted and the concrete control signals in the actuator control device 55 or to the speakers 70 output sound signals in the tone generator 60 generated. The same is done for release force thresholds, ie release force thresholds.

In 2 schematically is an embodiment of a haptic control device 100 shown. This includes two comparators 110 . 120 which compare a signal representing the pressing force with pressure force thresholds and release force thresholds. The values of the pressure and release force thresholds for the n ordered force threshold pairs are, for example, in a memory 132 stored. Furthermore, another comparator 130 provided, which a position signal 36 the detected touch positions then evaluates whether this lies in one of the triggering areas of one of the virtual operating elements. For this required information about the trigger areas are, for example, in a memory 133 saved. Comparison result signals 116 . 126 . 136 be from a haptic logic device 140 which processes the actuator activation signals 106 and / or corresponding sound activation signals 108 generated. The individual detected signals, ie a position signal 36 , a pressure force signal 46 and the actuator activation signals 106 and optionally the sound activation signals 108 are additionally via an interface 150 output.

About this interface 150 Also, information about the triggering regions and the n ordered force threshold pairs present in the memory 133 or in the memory 132 are stored, to the haptic controller 100 be transmitted.

3 shows an exploded perspective view of the back of an embodiment of the operating device 1 , Behind a front panel 6 a multimedia display control device 7 is a touch-sensitive position detection device 30 with a touch surface 31 and behind it a freely programmable display device 20 , The touch-sensitive position detecting device 30 and the freely programmable display device 20 can also be combined in a single device designed as a so-called touch screen. Behind the freely programmable display device 20 there is a pressure force measuring device 40 , At the back of the display control device 7 there is a controller 80 and one with the case 5 directly or indirectly connected actuator device 50 , The controller comprises all other control devices of the display operating device 7 in particular a touch screen control device, a display control device, a position detection control device, a pressure measurement control device, an actuator control device and a haptic control device. On to the actuator device 50 output actuator activation signal causes a mechanical deflection of the touch-sensitive position detection device 30 , The deflection of the contact surface 31 transfers to the Actuator, for example on the finger of the operator and is perceived as a haptic feedback. The actuator device 50 In this case, the contact surface can be either parallel or perpendicular to the plane of the freely programmable display device 20 be direct. A parallel deflection has the advantage that the touch-sensitive position detection device 30 stiffer, giving the operator the impression of a higher value of the display control device 7 gives. In addition, with parallel deflection, the distance between touch-sensitive position sensing device 30 and the front panel 6 or other elements of the display operator 7 be smaller, so that there is less contamination of the interior of the display control device 7 through dust etc. A vertical deflection of the actuator device 50 on the other hand has the advantage that the operator perceives the signal more strongly, for example via his finger, and thus the signal at the actuator device 50 may be less pronounced.

At the control 80 there is a speaker 70 , The positioning of the speaker 70 in the vicinity of the touch-sensitive position detecting device 30 and the freely programmable display device 20 has the advantage that the audible signal from the operator with the location of the display operator 7 is associated in the motor vehicle. This arrangement, motivated by perceptual-psychological considerations, increases the perception of feedback from the operator.

In 4 schematically is an embodiment of the operating device 1 shown in front view. The operating device 1 is integrated into a multimedia display operating device 7 , as it is common in motor vehicles of the middle and upper class today. The front panel is visible in the front view 6 , the touch-sensitive position detecting device 30 and the freely programmable display device 20 , The controller and the actuator device are not visible in the front view. Furthermore, the display operator comprises 7 two rotary encoder 11 and several physically trained keys 12 ,

In 5 schematically a characteristic of a pressure force measuring device is shown. Plotted is the pressing force that is needed and to get a certain deflection. Also shown are pressure thresholds and release force thresholds of multiple force threshold pairs. For a workspace 400 The force detection is a function 401 the rigidity of the force measuring system, ie the applied or measured force as a function of the distance by which the touch-sensitive position detecting device is moved by touch, qualitatively. The work area may for example provide a maximum deflection of 0.1 mm. To achieve this deflection, for example, a force of several N is needed. Simplified, the force-displacement relationship is assumed to be linear here, but it can also be designed differently. For the work area of force detection 400 are several ordered force threshold pairs 410 . 420 . 430 defined, which each have a compressive force threshold 411 . 421 and a release force threshold 412 . 422 include. The thresholds are all above a range 402 which is merely a touch of the touch-sensitive position detecting device. In every strength threshold pair 410 . 420 . 430 is the release force threshold 412 . 422 each below the associated pressure force threshold 411 . 421 , The control of the operating device compares the pressure force with the pressure force thresholds when touched 411 . 421 and the release force thresholds 412 . 422 and triggers each haptic feedback when a compressive force threshold 411 . 421 is reached or exceeded and in each case subsequently a release force threshold 412 . 422 is reached or fallen below.

The several different functions, with the different pressure force thresholds 411 . 421 are linked, when exceeding or reaching the respective pressure force clamp or falling below the associated with this respective pressure force threshold release force thresholds 412 . 422 triggered by the controller accordingly.

6 schematically shows the force curve when operating a virtual control element of the operating device when exceeding or falling below the thresholds of a force threshold pair. An operator touches the triggering area of a virtual control element at a touch position on the touch-sensitive position detection device. Touching 440 is during the contact duration 441 detected by the touch-sensitive position detection device and a touch position is determined. If the controller detects that the touch position is within a triggering range of a virtual operating element, then the control now compares the pressure force currently exerted at the contact position with the force thresholds 411 . 412 . 421 . 422 the force threshold pairs 410 . 420 . 430 , which is assigned to the virtual control element. The operator now increases the pressure force, so that the pressure force threshold 411 of the first pair of force thresholds 410 is exceeded and it to the input trip 442 comes. The controller now generates an actuator activation signal, which is converted via the actuator device into a haptic feedback. At the same time or delayed, an optional sound signal is generated which is output at a loudspeaker. Since the touch position with the position of a virtual control element is linked, the function associated with the virtual control is selected by the controller. After exceeding the pressure force threshold 411 the operating device is pressed in the state first latching step 443 , Without first the pressure force threshold 421 of the second pair of force thresholds 420 To exceed the operator again reduces the pressure force and falls below the release force threshold 412 of the first pair of force thresholds 410 , making it the output trigger 444 comes. The controller now generates another signal, which is output via the actuator device for haptic feedback. Optionally, the controller simultaneously or delayed generates a signal that is output through the speaker for acoustic feedback. Through the output release 444 the previously selected function is triggered. After falling below the release force threshold 412 of the first pair of force thresholds 410 the operating device is in the release state 445 , After further reducing the pressing force, the operator releases the finger again 446 ,

7 shows schematically the force curve when operating a virtual control element of the operating device with exceeding the pressure force thresholds 411 . 421 of two force threshold pairs 410 . 420 ,

An operator touches the triggering area of a virtual control element at a touch position on the touch-sensitive position detection device. Touching 440 is detected during the touch period by the touch-sensitive position detecting device, and a touch position is detected. The control now compares the pressure force currently applied at the touch position with the force thresholds 411 . 412 . 421 . 422 the force threshold pairs 410 . 420 , The operator now increases the pressure force, so that the pressure force threshold 411 of the first pair of force thresholds 410 is exceeded and it to the input trip 442 comes. The controller now generates an actuator enable signal, which is output via the actuator device, so that the operator experiences a haptic feedback. At the same time or delayed, a sound signal is optionally generated, which is output to a loudspeaker as acoustic feedback. Since the touch position is associated with the position of a virtual control, one with the pressure force threshold 411 of the first pair of force thresholds 410 The function associated with the virtual control is selected by the controller but not yet triggered. After exceeding the pressure force threshold 411 the operating device is pressed in the state first latching step 443 , The operator now further increases the pressure force at the touch position, so that the pressure force threshold 421 of the second pair of force thresholds 420 is exceeded and it to the input trip-2 452 comes. The controller now generates another actuator enable signal, which is output via the actuator device, so that the operator experiences a haptic feedback. At the same time or delayed, a sound signal is optionally generated again, which is output to a loudspeaker as acoustic feedback. At the same time one with the pressure force threshold 421 of the second pair of force thresholds 420 The function associated with the virtual control is selected by the controller but not yet triggered. After exceeding the pressure force threshold-2 421 the operating device is in the state Press-2 453 , Subsequently, the operator reduces the pressure force again, so that successively only the release force threshold 422 of the second pair of force thresholds 420 and then the release force threshold 412 of the first pair of force thresholds 410 is fallen short of. When falling below the two release force thresholds 412 . 422 The controller again generates an actuator enable signal to generate haptic feedback via the actuator device and optionally a signal to output acoustic feedback to the speaker. After falling below the release force threshold 422 of the second pair of force thresholds 420 the operating device changes from the second latching state 453 pressed back into the state first latching step 443 , and after falling below the release force threshold 412 of the first pair of force thresholds 410 back to the state Unpressed 447 , When falling below the release force threshold 412 of the first pair of force thresholds 410 the currently selected function, in this case the function which is linked to the second force threshold pair, is triggered.

When the operator lifts his finger away from the touch-sensitive position-sensing device, the operating device changes back to the state finger-lifted 446 ,

Depending on the functionality of the function associated with the virtual control element, the selection and triggering of the function can also be implemented differently. The logical combination of the selection and the triggering of functions with the pressure force thresholds and release force thresholds always depends on the respective application and the operating context. An example of a simultaneous selection and triggering of a function with both pressure force thresholds and release force thresholds is an implementation of similar functions associated with multiple force threshold pairs, in which only one parameter value of the function changes.

For example, in a function which serves to fast-forward during the playback of a piece of music, the speed of the Fast-forwarding can be set. Exceeding the pressure force threshold of the first pair of force thresholds then causes a change from the playback state to the state of the simple fast-forward, a subsequent exceeding the pressure force threshold of the second pair of force thresholds, however, changes the state to fast forward. If, after this, the release force threshold of the second force threshold pair is undershot again, this causes a change of state back into the state of the simple fast-forwarding. Falling below the release force threshold of the first pair of force threshold then causes the change back to the playback state. In this example, therefore, all the force thresholds are linked to a change of function or state, with always selecting and triggering taking place.

In 8th is an example of an embodiment of the operating device 1 shown in the music playback area. On a touch screen 15 , which is a freely programmable display device 20 and a touch-sensitive position detecting device 30 includes graphical representations of virtual controls are shown. An example is the operation of a virtual control element 501 to select the next song on a playlist. For the virtual control 501 are a trigger area 505 and associated two force threshold pairs stored in the controller, which lead to the triggering of different functions. In addition to a contact pressure force, the respective duration is determined in which the pressure force remains after exceeding the pressure force threshold in a pressure force activation region. The press force activation area has the associated release force threshold as the lower limit and the next higher pressure force threshold as the upper limit, if one exists. Depending on the duration, additional functions are selected and triggered.

For example, here's the procedure: An operator touches the touch screen 15 with his finger 500 at a touch position 502 which are within a triggering range 505 a virtual control 501 lies. When the pressure force threshold of the first pair of force thresholds is exceeded, a haptic 503 , and optionally an additional acoustic, feedback and a function for playing the next song selected, but not yet triggered. When the pressure force threshold of the second force threshold pair is exceeded, the function for playing the next album is selected and another haptic 503 , and optionally an additional acoustic, feedback output. If, on the other hand, the second pressure force threshold is not exceeded, there are two possible scenarios: If a predefined duration is exceeded after exceeding the pressure force threshold of the first pair of force thresholds, without either exceeding the pressure force threshold of the second force threshold pair or falling short of the release force threshold of the first force threshold pair, then the search in Forward direction triggered in the current song, the search is then carried out until the release force threshold of the first pair of force thresholds is reached. However, if the predetermined duration is not exceeded and then falls below the release force threshold of the first pair of force threshold again, the function for playing the next song is triggered. Similarly, when a predefined duration is exceeded after exceeding the pressure force threshold of the second force threshold pair, the fast search in the forward direction in the current title is triggered, ie the associated function is selected and triggered. If, however, the predetermined duration above the second pressure force threshold is not exceeded and then falls below both release force thresholds, the next album will be played. When falling below the release force thresholds is another haptic 503 and / or acoustic feedback. An operator thus has four possible functions that he has over the same virtual control 501 can trigger.

In principle, other possibilities of the manner in which functions can be linked with pressure force thresholds, release force thresholds or predefined durations of a virtual operating element can also be realized. The logical links to the respective selection and triggering of the functions always result from the respective application scenario.

In 9 is an example of another embodiment of the operating device 1 , also in the field of music playback. On a touch screen 15 , which is a freely programmable display device 20 and a touch-sensitive position detecting device 30 have graphical representations of virtual controls are shown.

The reference numbers refer to the same features as in FIG 8th , In the menu shown can be made of several songs by increasing the pressure force, for example, mediated by the finger 500 of the operator, individual at the corresponding touch position with a virtual control element 501 Select linked songs and play them immediately or add them to a playlist. The function for adding to the playlist is selected by exceeding the pressure force threshold of the first pair of force thresholds, but only triggered during the subsequent falling below the associated release force threshold, wherein the pressure force threshold of the second Kraftschwellenpaares must not have been exceeded before. The function for immediate playback of the song is selected by exceeding the pressure force threshold of the second pair of force thresholds and triggered by subsequently falling below the two release force thresholds. It will each be a haptic 503 and / or acoustic feedback when exceeding the pressure force thresholds and falling below the release force thresholds. In this example, the duration of the keystroke is not evaluated.

In 10 is an example of another embodiment of the operating device 1 for an application in the field of radio operation. On a touch screen 15 , which is a freely programmable display device 20 and a touch-sensitive position detecting device 30 2, graphical representations of virtual controls representing stored frequencies of radio stations are shown. The reference numbers refer to the same features as in FIG 8th , Operation and triggering of the functions associated with the virtual controls is analogous to the descriptions of 8th and 9 , An operator dials again by touching, for example with his finger 500 , on one with a virtual control 501 linked touch position 502 a specific virtual control 501 out. By exceeding pressure force thresholds he can different with the virtual control element 501 trigger linked functions. Here, for example, the following actions for triggering the functions are provided: For exceeding the pressure force threshold of the first pair of force thresholds inviting a transmitter memory, for exceeding the pressure force threshold of the second pair of force thresholds storing the currently set station in the memory space, with the virtual control 501 is linked. The function for loading the transmit memory is first selected by exceeding the pressure force threshold only and triggered when falling below the associated release force threshold, unless the pressure force threshold of the second threshold pair of force has been exceeded or a predetermined duration has been exceeded. If the pressure force threshold value of the first pair of force thresholds has already been exceeded, then the current transmitter can also be stored, for example, by exceeding a predetermined duration, unless the pressure force threshold of the second force threshold pair has been exceeded. When exceeding the pressure force thresholds and falling below the release force thresholds are haptic 503 and optionally an additional acoustic feedback.

Another virtual control 504 in the field of radio operation, for example, the following functions can be linked: for exceeding the pressure force threshold of the first pair of force thresholds, selecting the next transmitter memory; for exceeding the pressure force threshold value of the second threshold pair, selecting the next receivable transmitter. The logical link for selecting and triggering the two functions is carried out analogously to the descriptions of the embodiments in the 8th and 9 , When exceeding the pressure force thresholds and falling below the release force thresholds are haptic 503 and optionally an additional acoustic feedback. Over the duration after exceeding the pressure force thresholds, no function can be triggered in this example.

11 shows an embodiment with an application in the field of telephony. The reference numerals again designate the same features as in the preceding figures. Several contacts can be selected in the displayed list. The contacts are each assigned to virtual controls. For example, an operator touches a virtual control 501 at a touch position 502 with his finger 500 , If the operator exceeds the pressure force threshold of the first pair of force thresholds and then falls below the associated release force threshold, the contact details for the one with the virtual control element open 501 linked contact. If the pressure force threshold of the second pair of force thresholds is exceeded and then the release force thresholds of both force threshold pairs are undershot, then the contact is called directly, for example via a speed dial of the standard telephone number set for this contact. If, after exceeding the pressure force threshold of the first pair of force thresholds, a predefined duration is exceeded, the contact is marked as a favorite unless the pressure force threshold of the second threshold pair has been exceeded or the release force threshold of the first threshold pair has fallen below within the predetermined period. When exceeding the pressure force thresholds and falling below the release force thresholds are haptic 503 and optionally an additional acoustic feedback.

12 shows an embodiment in the field of navigation. The reference numerals again designate the same features as in the preceding figures. The selection and triggering of the functions is analogous to the descriptions already given for the preceding figures.

The with the virtual control 501 linked functions can be for example the following: When exceeding the Threshold of the first pair of force threshold, the route guidance to the currently entered destination is started and an operator can choose one of three alternative routes. On the other hand, exceeding the pressure force threshold of the second force threshold pair triggers the route guidance via a standard route, for example one via expressways. The logical link for selecting and triggering the two functions is carried out again analogous to the descriptions of the embodiments in the 8th and 9 , When exceeding the pressure force thresholds and falling below the release force thresholds are haptic 503 and optionally an additional acoustic feedback.

13 shows an embodiment in the field of text input. The reference numerals again designate the same features as in the previous figures. The selection and triggering of the functions is analogous to the descriptions already given for the aforementioned figures. The with the virtual control 501 linked functions can be, for example, the following: When exceeding the pressure force threshold of the first pair of thresholds, the letter associated with the virtual control element is selected. On the other hand, exceeding the pressure force threshold of the second force threshold pair triggers the insertion of umlauts and further symbols, which can then be selected by the operator. After exceeding the pressure force threshold of the first pair of force thresholds, the insertion of umlauts and other symbols can also be triggered by exceeding a predetermined duration above the pressure force threshold of the first pair of force thresholds. The logical link for selecting and triggering the two functions is carried out again analogous to the descriptions of the embodiments in the 8th and 9 , When exceeding the pressure force thresholds and falling below the release force thresholds, a haptic 503 and optionally an acoustic feedback.

Depending on the operating context, pressure force thresholds and release force thresholds of several force threshold pairs can be assigned functions as required. There are thus many possibilities to combine a single virtual control element with several functions. This increases the ease of use, the efficiency and above all the safety in the operation of vehicle systems, since when operating the actuator, such as the finger, less often must be recognized.

In 14 schematically is another alternative embodiment of the operating device 1 shown. Shown is a section of a steering wheel 600 , The steering wheel 600 comprises an operating device according to the invention 1 , which is on the left side of a right-hand recess of the steering wheel 600 is installed so that it can be comfortably operated during normal driving the steering wheel while driving from the right thumb of a driver. The operating device 1 includes a touch-sensitive position detection device 30 , a pressure force measuring device 40 , an actuator device 50 and a speaker 70 , With trigger areas 505 the touch-sensitive position detecting device 30 are linked virtual controls whose functions can be selected or triggered by touching and then exceeding the respective pressure force thresholds and release force thresholds. When exceeding the pressure force thresholds and falling below the release force thresholds haptic feedback via the actuator device 50 and optionally an acoustic feedback via the loudspeaker 70 , The steering wheel can additionally also physically trained switch 601 or include buttons.

In 15 is a schematic representation of a section of a steering wheel 600 to explain the operation shown. Shown is an embodiment of the invention, located at the right edge of the left-hand recess of the steering wheel 600 and should be operated by the thumb of the left hand of the driver. By way of example, the control of a cruise control is implemented here. For example, is a virtual control 501 , which is above the touch-sensitive position detection device 30 a graphical representation 602 , For example, as surface-applied film with printed symbols, associated with the following functions of the cruise control: Is by touching and pressing the virtual control element 501 through the operator's finger 500 the pressure force threshold of the first Threshold exceeded, so the Tempomatabstand is reduced to the next motor vehicle by one stage, if subsequently the release force threshold of the first pair of force thresholds is exceeded, without previously the compressive force threshold of the second threshold pair was exceeded. If the pressure force threshold of the second pair of force thresholds is exceeded, then the cruise control distance to the next motor vehicle is reduced by two levels, when subsequently the release force thresholds of the two force threshold pairs are again undershot. If after exceeding the pressure force threshold of the first pair of force thresholds without exceeding the pressure force threshold of the second pair of force thresholds or falling below the release force threshold of the first pair of force thresholds, dwells in this force range, the cruise control interval is reduced by one level per 0.5 seconds. If, on the other hand, the pressure force threshold of the second force threshold pair is exceeded, then the cruise control interval is reduced by one step per 0.25 seconds if the pressure force threshold is exceeded. When exceeding the pressure force thresholds and falling below the release force thresholds there is a haptic feedback via the actuator device and optionally additionally an acoustic feedback via the loudspeaker.

With another virtual control element 504 the cruise control, for example, the following functions are linked: Will by touching and pressing the virtual control 504 If the pressure force threshold of the first pair of force thresholds is exceeded, the setting speed of the cruise control system is increased by 1 km / h as soon as the associated release force threshold is fallen below again. If the compressive force threshold of the second pair of force thresholds is exceeded, the setting speed of the cruise control, on the other hand, is increased by 10 km / h as soon as the release force thresholds of the two pairs of force thresholds are again undershot. If after exceeding the pressure force threshold of the first pair of force thresholds, without exceeding the pressure force threshold of the second pair of force thresholds or falling below the release force threshold of the first pair of force thresholds, dwells in this force range, the setting speed is increased by 5 km / h per 0.5 seconds. If, on the other hand, the pressure force threshold of the second force threshold pair is exceeded, the setting speed is increased by 10 km / h per 0.5 second. When exceeding the pressure force thresholds and falling below the release force thresholds again a haptic feedback via the actuator device and optionally additionally an acoustic feedback via the speaker.

16 shows a schematic flow diagram of the method. In the first method step, a trigger region of a virtual control element is defined on a touch-sensitive position detection device 1001 , In the next method step, touch positions are detected by the touch-sensitive position detection device 1002 , The detected touch position is compared with the trigger area of the virtual control element 1003 , If the contact position is in the release area, contact pressure forces are detected by a pressure force measuring device 1004 , If a pressure force threshold of one of the n-ordered force threshold pairs is exceeded or falls below a release force threshold of one of the n-ordered force threshold pairs 1005 , the associated function is triggered 1006 , In addition, a haptic feedback is output via the actuator device 1007 , At the same time or delayed, an additional acoustic feedback is optionally output via a loudspeaker 1008 , Subsequently, the process steps 1002 to 1008 repeated for the virtual control in the form of a loop.

Depending on the requirements, the process can also be carried out or structured differently.

LIST OF REFERENCE NUMBERS

1

 operating device

2

 operating unit

3

 motor vehicle

5

 casing

6

 front panel

7

 Display control device

10

 touchscreen

11

 Rotary push encoders

12

 physical key

15

 Touchscreen controller

20

 freely programmable display device

21

 display area

25

 Display control means

30

 touch-sensitive position detection device

31

 contact surface

35

 Position sensing controller

36

 position signal

40

 Pressure force measuring device

41

 sensor element

45

 Pressure measurement controller

46

 Pressure force signal

50

 actuator device

51

 actuator

55

 Actuator control means

60

 sound generator

70

 speaker

80

 control

100

 Haptic controller

106

 Actuator activation signal

108

 Sound activation signal

110

 first comparator

116

 Comparison result signal (first force threshold)

120

 second comparator

126

 Comparison result signal (second force threshold)

130

 further comparator

132

 Storage

133

 Storage

136

 Comparison result signal (trip area position)

140

 Haptic logic device

150

 interface

160

 delay means

200

 mainframe

210

 Host interface

300

 BUS

400

 Work area force detection

401

 Function of the rigidity of the force measuring system

402

 touch recognition

410

 first threshold of force

411

 Compressive force threshold of the first pair of force thresholds

412

 Release force threshold of the first pair of force thresholds

420

 second threshold of force

421

 Compressive force threshold of the second force threshold pair

422

 Release force threshold of the second force threshold pair

430

 more force threshold pairs

440

 Finger up

441

 Berührdauer

442

 input triggering

443

 State first latch pressed

444

 output triggering

445

 Release state

446

 Finger lifted

447

 Condition Not pressed

452

 Input triggering-2

453

 Condition second notch depressed

454

 Output trigger-2

500

 Finger of the operator

501

 virtual control

502

 contact position

503

 haptic feedback

504

 another virtual control element

505

 trip area

600

 steering wheel

601

 physical control

1001-1008

 steps

QUOTES INCLUDE IN THE DESCRIPTION

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

Cited patent literature

• DE 102006012147 A1 [0006]
• DE 102008035907 A1 [0007]
• DE 102008046102 A1 [0008]

Claims (13)

Operating device ( 1 ) for a motor vehicle ( 3 ) comprising: a touch-sensitive position detection device ( 30 ) with a contact surface ( 31 ) for detecting at least one touch position; at least one pressure force measuring device ( 40 ) for determining a contact surface ( 31 ) acting upon a pressing operation of the operating device ( 1 ); at least one directly or indirectly with the contact surface ( 31 ) coupled actuator device ( 50 ) for targeted movement of the contact surface ( 31 ); wherein at least one virtual control element ( 501 ) at least one triggering area ( 505 ) on the contact surface ( 31 ) and at least one pressure force threshold is assigned; and wherein the at least one compressive force threshold is associated with at least one function; as well as a controller ( 80 ), which is formed, depending on the at least one detected touch position ( 502 ) and a comparison of the determined pressure force with the pressure force threshold ( 411 ) to determine whether a correct haptic actuation of the at least one virtual operating element ( 501 ), and, if this is the case, the at least one function which corresponds to the at least one pressure force threshold of the at least one virtual operating element ( 501 ) and the at least one actuator device ( 50 ) to provide haptic feedback ( 503 ) at the contact surface ( 31 ), characterized in that the at least one virtual operating element is assigned at least one further pressure force threshold, wherein the at least one further pressure force threshold is greater than the at least one pressure force threshold, and wherein the at least one further pressure force threshold is associated with at least one further function; and where the controller ( 80 ), the determined pressure force additionally with the at least one further pressure force threshold ( 421 ) and, if the at least one detected touch position ( 31 ) in a tripping area ( 505 ) of the at least one virtual control element ( 501 ), a selection or selection of the various virtual control elements ( 501 ) assigned functions depending on the comparison results and in each case when reaching or exceeding one of the pressure force thresholds ( 411 . 421 ) an actuator activation signal ( 106 ), wherein the actuator activation signal ( 106 ) is configured, via the actuator device ( 50 ) a haptic feedback ( 503 ) at the contact surface ( 31 ). Operating device ( 1 ) according to claim 1, characterized in that each of the different pressure force thresholds ( 411 . 412 ) is assigned in each case a release force threshold, which is smaller than the corresponding pressure force threshold ( 411 . 421 ) and the controller ( 80 ) is designed to compare the determined pressure force with the release force thresholds and to generate an actuator activation signal when falling below the release force thresholds, which of the coupled with the contact surface actuator device ( 50 ), so that a haptic feedback ( 503 ) at the contact surface ( 31 ) ( 1007 ) becomes. Operating device ( 1 ) according to claim 1 or 2, characterized in that the controller ( 80 ) is formed, at least one of the at least two with the at least one virtual control element ( 501 ) to trigger various functions when the determined contact pressure force associated with the corresponding function Druckkraftschwelle ( 411 . 421 ) reaches or exceeds. Operating device ( 1 ) according to one of the preceding claims, characterized in that the controller ( 80 ) is formed, at least one of the at least two with the at least one virtual control element ( 501 ), to trigger various functions only if the pressure force determined, after having determined the pressure force threshold associated with this function (FIG. 411 . 421 ) exceeding the pressure force threshold ( 411 . 421 ) release threshold ( 412 . 422 ), which is smaller than the associated pressure force threshold ( 411 . 421 ) is below. Operating device ( 1 ) according to one of claims 2 to 4, characterized in that the controller ( 80 ) is formed, at least one of the at least two with the at least one virtual control element ( 501 ) triggering different functions only when the determined contact pressure force associated with this function pressure force threshold ( 411 . 421 ) has been exceeded and the determined pressure force for a certain duration is in a pressure force activation range, whose lower limit is determined by the release force threshold ( 412 . 422 ), which is the pressure force threshold ( 411 . 421 ) associated with this function, and whose upper limit, if any, by a next higher of the various pressure force thresholds ( 411 . 421 ) given is. Operating device according to one of claims 2 to 5, characterized in that at least two of the release force thresholds ( 412 . 422 ) are the same. Operating device ( 1 ) according to one of claims 1 to 6, characterized in that the controller ( 80 ) is configured to generate the actuator activation signals in such a way that the haptic feedbacks generated at the contact surface ( 503 ), which coincides with the crossing of one of the Pressure force thresholds ( 411 . 421 ) and the haptic feedback generated at the contact surface ( 503 ) which falls below one of the release force thresholds ( 412 ; 422 ) are different. Operating device ( 1 ) according to one of claims 1 to 6, characterized in that the operating device ( 1 ) a speaker ( 70 ) and the controller ( 80 ) is formed at the same time or delayed with the haptic feedback ( 503 ) an acoustic signal via the loudspeaker ( 70 ). Method of operating functions, comprising the steps of: defining ( 1001 ) a trigger region of a virtual control element on a touch-sensitive position detection device, assigning a pressure force threshold to the at least one virtual control element; Assigning at least one function to the pressure force threshold; To capture ( 1002 ) of touch positions on the touch-sensitive position sensing device, determining ( 1004 ) a pressing force in a touching operation of the contact surface; Evaluate ( 1003 . 1005 ) of the detected touch positions and comparing the pressure force with the pressure force threshold and determining whether there is a correct haptic actuation of the virtual control element, and if so, selecting or selecting ( 1006 ) at least one function assigned to the at least one virtual operating element and generating ( 1007 ) of a haptic feedback at the contact surface, characterized in that the at least one virtual control element is assigned at least one further pressure force threshold which is greater than the one pressure force threshold, and wherein the further pressure force threshold is assigned at least one further function, and it is checked whether the at least one detected touch position ( 31 ) in a tripping area ( 505 ) of the at least one virtual control element ( 501 ), compare ( 1005 ) of the determined pressure force with the at least one further pressure force threshold ( 421 ), and, if the contact position ( 31 ) in the triggering area ( 505 ), selecting or selecting the various virtual control elements ( 501 ) associated functions depending on the comparison results of the pressing force with the pressure force thresholds and generating in each case an actuator activation signal ( 106 ), when the pressure force of one of the pressure force thresholds ( 411 . 421 ), and wherein the respective actuator activation signal of an actuator device coupled to the contact surface ( 50 ) is supplied, the haptic feedback ( 503 ) at the contact surface ( 31 ) ( 1007 ). Method according to claim 9, characterized in that each of the different pressure force thresholds ( 411 . 412 ) is assigned in each case a release force threshold, which is smaller than the corresponding pressure force threshold ( 411 . 421 ) and the determined pressure force is compared with the release force thresholds and when falling below the release force thresholds an actuator activation signal is generated, which of the coupled with the contact surface actuator device ( 50 ), so that a haptic feedback ( 503 ) at the contact surface ( 31 ) ( 1007 ) becomes. Method according to one of Claims 9 or 10, characterized in that at least one function of the at least two different functions associated with the virtual operating element is triggered when the pressure force threshold associated with this at least function is exceeded. Method according to one of claims 9 to 11, characterized in that at least one function of the at least two associated with the virtual control various functions is triggered when the associated with the pressure force threshold release force threshold, which is smaller than the associated pressure force threshold is exceeded. Method according to one of Claims 10 to 12, characterized in that at least one function of the at least two different functions associated with the virtual operating element is triggered when the pressure force has exceeded the pressure force threshold associated with this at least one function and a certain duration above that pressure force threshold associated release force threshold is without a higher pressure force threshold, if any, is exceeded during the period.

Images