CN116888567A - Electronic device including haptic feedback device and method of providing haptic feedback - Google Patents
Electronic device including haptic feedback device and method of providing haptic feedback Download PDFInfo
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- CN116888567A CN116888567A CN202180094626.1A CN202180094626A CN116888567A CN 116888567 A CN116888567 A CN 116888567A CN 202180094626 A CN202180094626 A CN 202180094626A CN 116888567 A CN116888567 A CN 116888567A
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- continuous path
- haptic
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- 238000000034 method Methods 0.000 title claims description 12
- 230000004044 response Effects 0.000 claims abstract description 5
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 4
- 210000003811 finger Anatomy 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 229920002323 Silicone foam Polymers 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
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- 230000001788 irregular Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
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- 230000001902 propagating effect Effects 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000013514 silicone foam Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241001422033 Thestylus Species 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000002452 interceptive effect Effects 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
Abstract
An electronic device (1) comprising a body (2) and a tactile feedback device forming at least partially an outer surface (2 a) of the body (2). The haptic feedback device comprises a waveguide element (3); a first haptic actuator (4) operatively connected to the waveguide element (3) and for generating a first shear wave (S1) in the waveguide element (3); a second haptic actuator (5) operatively connected to the waveguide element (3) and for generating a second shear wave (S2) in the waveguide element (3). The waveguide element (3) is adapted to allow the first shear wave (S1) and the second shear wave (S2) to propagate in opposite directions along a continuous path within the waveguide element (3). The waveguide element (3) provides tactile feedback to a user in response to propagation of the first shear wave (S1) and/or the second shear wave (S2).
Description
Technical Field
The invention relates to an electronic device comprising a body having a main axis and a haptic feedback device at least partially forming an outer surface of the body.
Background
Haptic or tactile feedback is widely used in modern electronic devices for providing cues to alert a user to specific events, or for providing a realistic feedback feel to create a better sensory experience. To generate such haptic effects, different types of actuators may be utilized to stimulate the user's skin at specific locations where the user is in contact with, interacting with, the surface of the device. The actuator is used to generate haptic effects through specifically shaped surface oscillations, signal patterns, or signal disturbances at specific user contact points, or vice versa, to dynamically eliminate haptic feedback in certain areas of the surface.
In addition, touch screens are becoming increasingly popular because of their high sensitivity and direct interface operation. However, in interactions between a finger and a touch screen (direct input), the contact time between the fingertip and the touch screen is limited so as not to block the visual output of the touch screen.
Like a conventional pen or pencil, a stylus or like tool can be used in conjunction with various wearable devices (e.g., a tablet, a smart phone, a smart watch, and a touch screen of any other portable electronic device) to input information in the form of text, graphics, and pictures. The stylus minimizes blocking of visual output, improves the accuracy of touch input, and increases the contact time of the user with the interactive surface, which is necessary to provide adequate tactile feedback. The feedback may be tailored to the particular type of data and user preferences. In general, the more functions are required, the more actuators are required to perform the functions. The tactile feedback capability of a stylus is largely limited by its size and power consumption. Because currently available haptic technology cannot meet user demand, existing high-fidelity haptic feedback schemes cannot achieve the required level of accuracy.
Accordingly, it is desirable to provide an electronic device, such as a stylus, with improved tactile feedback devices for use with other electronic devices.
Disclosure of Invention
The present invention is directed to an electronic device having an improved haptic feedback device. The above and other objects are achieved by the features of the independent claims. Other embodiments are apparent from the dependent claims, the description and the drawings.
According to a first aspect, there is provided an electronic device comprising a body having a spindle; a haptic feedback device at least partially forms an outer surface of the body or is disposed on the outer surface of the body along the primary axis. The haptic feedback device includes a waveguide element extending along the primary axis; a first haptic actuator operatively connected to a first end of the waveguide element, the first haptic actuator for generating a first shear wave in the waveguide element; a second haptic actuator operatively connected to the second end of the waveguide element for generating a second shear wave in the waveguide element. The waveguide element is configured to permit at least one of the first shear wave and the second shear wave to propagate along a continuous path within the waveguide element; the first shear wave and the second shear wave propagate in opposite directions along the continuous path; the waveguide element is for providing haptic feedback to a user in response to propagation of the first shear wave and/or the second shear wave.
By minimizing the number of actuators and signal controls required, this solution helps provide high definition, multi-point haptic feedback. This solution responds quickly and saves size and power consumption.
In a possible implementation of the first aspect, the first shear wave and the second shear wave constructively interfere at one or more points along the continuous path. Constructive interference of the several signals improves the efficiency of the haptic signal transmission and thus the haptic feedback to the user.
In a further possible implementation of the first aspect, the first shear wave and the second shear wave destructively interfere at one or more points along the continuous path such that the first shear wave and the second shear wave cancel each other out, at which point no haptic feedback is provided.
In a further possible implementation of the first aspect, the first and second shear waves generate at least one local interference maximum at one or more user contact points along an outer surface of the electronic device, enabling low energy consumption while dynamically haptic feedback.
In a further possible implementation of the first aspect, the first shear wave and the second shear wave create local interference maxima, forming a three-dimensional pattern on an outer surface of the electronic device, such that different physical masses, shapes or textures are supported and supplemented when using/indirectly exploring through the electronic device.
In a further possible implementation of the first aspect, the continuous path of the waveguide element extends three-dimensionally along at least a portion of the body. In this way constructive interference can occur along the length of the waveguide element, i.e. on the electronic device.
In a further possible implementation of the first aspect, the waveguide element extends concentrically with the body in the direction of the main axis, such that the tactile feedback may be provided to different parts of the user's body through the entire outer surface of the electronic device, e.g. to the palm and the fingertips at the same time.
In a further possible implementation of the first aspect, adjacent portions are separated by a gap on the three-dimensionally extending continuous path such that no portion of the continuous path is in contact with any other portion of the continuous path. This allows the shear wave to propagate freely in the waveguide element, unaffected.
In a further possible implementation of the first aspect, the gap is filled with air or a vibration damping elastic material.
In a further possible embodiment of the first aspect, the vibration damping resilient material is silicone or porous polypropylene foam.
In a further possible implementation of the first aspect, each of the adjacent sections forms a coil rotating around the main axis, and the tactile feedback can be provided at several contact points without having to vibrate the whole electronic device resulting in more energy consumption.
In a further possible implementation of the first aspect, the continuous path is in a spiral shape, a central axis of the spiral being coaxial with the main axis.
In a further possible embodiment of the first aspect, the spiral is one of a cylindrical spiral, a square spiral and a spiral with an irregular cross section, thereby maximizing the surface area of the body to provide haptic feedback requiring only one waveguide element and one control device.
In a further possible implementation of the first aspect, the first and second haptic actuators are for applying a force to the waveguide element in a direction perpendicular to the main axis, such that the actuators may be arranged within the body of the electronic device without affecting the size of the haptic feedback device.
In a further possible implementation of the first aspect, the first and second haptic actuators are linear actuators for applying a force in a direction extending radially from the main shaft towards the outer surface of the body, facilitating a simple, small and reliable actuation.
In a further possible implementation of the first aspect, the first and second haptic actuators are ultrasonic, electrostatic, electromagnetic, thermal or pneumatic actuators, so that the device may be operated without mechanical linkage.
In a further possible implementation of the first aspect, the waveguide element comprises a layered structure, at least a first layer being an elastic layer allowing propagation of the first shear wave and/or the second shear wave, the layered structure allowing providing a plurality of functions through the waveguide element.
In a further possible implementation of the first aspect, the layered structure further comprises a second layer for insulating the first layer from the body such that lateral oscillations generated by propagation of the first and second shear waves are at least mostly directed towards an outer surface of the electronic device. The second layer enhances the stimulation of the user's skin in a simple and efficient manner.
In a further possible embodiment of the first aspect, the second layer comprises a silicone or polyurethane foam film.
In a further possible implementation of the first aspect, the electronic device further comprises a cover layer forming an outer surface of the electronic device, the cover layer comprising at least one sensor element for detecting user engagement with the electronic device. By means of the sensor element, the momentary contact point of the user can be determined quickly and correctly.
In a further possible embodiment of the first aspect, the cover layer comprises a polymer-based material, optionally the polymer-based material is optically transparent.
In a further possible implementation of the first aspect, the sensor element is a capacitive sensor having low power consumption.
In a further possible implementation of the first aspect, the sensor element is for detecting an accurate position of a user's fingertip, facilitating implementation of a highly flexible and accurate solution.
In a further possible implementation of the first aspect, the electronic device is a stylus for interacting with another electronic device, preferably a touch screen of the other electronic device.
According to a second aspect, there is provided a method of providing multi-point haptic feedback to a user of an electronic device, the electronic device comprising a body and a haptic feedback device, the haptic feedback device comprising a waveguide element, a first haptic actuator operatively connected to a first end of the waveguide element, and a second haptic actuator operatively connected to a second end of the waveguide element; the method comprises the following steps: a user engaging the electronic device at one or more contact points along the body; the first haptic actuator generates a first shear wave in the waveguide element and/or the second haptic actuator generates a second shear wave in the waveguide element. Propagation of the first shear wave and/or the second shear wave through the waveguide element produces haptic feedback to the user at the contact point.
This approach allows relatively small portable electronic devices to provide high definition multi-point haptic feedback because the number of actuators and signal controls required is minimized. This solution responds quickly and saves size and power consumption.
In a possible implementation of the second aspect, the first shear wave and the second shear wave propagate in opposite directions along a continuous path within the waveguide element, the haptic feedback being generated by constructive interference of the first shear wave and the second shear wave at one or more points along the continuous path, wherein at least one point is a user contact point. Constructive interference of the several signals improves the efficiency of the haptic signal transmission and thus the haptic feedback to the user.
In a further possible implementation of the second aspect, the first shear wave and the second shear wave destructively interfere at one or more points along the continuous path such that the first shear wave and the second shear wave cancel each other out, at which point no haptic feedback is provided.
In a further possible implementation of the second aspect, the first shear wave and the second shear wave produce local interference maxima at points where they constructively interfere, forming a three-dimensional pattern on the outer surface of the electronic device, whereby different physical qualities, shapes or textures are supported and complemented when the method is performed, used/indirectly explored by the electronic device.
These and other aspects will be apparent from and elucidated with reference to the embodiments described hereinafter.
Drawings
In the following detailed description of the invention, aspects, embodiments and implementations will be explained in more detail with reference to exemplary embodiments shown in the drawings, in which:
FIG. 1 illustrates a schematic perspective view of an exemplary electronic device provided by an embodiment of the present invention;
FIG. 2 illustrates a partial side view of an exemplary electronic device provided by an embodiment of the present invention;
FIG. 3 illustrates a cross-sectional view of an exemplary electronic device provided by an embodiment of the invention;
fig. 4 illustrates a partial cross-sectional view of an exemplary electronic device provided by an embodiment of the present invention.
Detailed Description
The invention relates to an electronic device 1 comprising a body 2 having a main axis a, a tactile feedback device forming at least partly an outer surface 2a of the body 2 or being arranged along the main axis a at the outer surface 2a of the body 2. The tactile feedback device comprises a waveguide element 3 extending along a main axis a; a first haptic actuator 4 operatively connected to the first end 3a of the waveguide element 3, the first haptic actuator 4 being for generating a first shear wave S1 in the waveguide element 3; a second haptic actuator 5 operatively connected to the second end 3b of the waveguide element 3, the second haptic actuator 5 being for generating a second shear wave S2 in the waveguide element 3. The waveguide element 3 is adapted to allow at least one of the first shear wave S1 and the second shear wave S2 to propagate along a continuous path within the waveguide element 3, the first shear wave S1 and the second shear wave S2 propagating along the continuous path in opposite directions, the waveguide element 3 being adapted to provide tactile feedback to a user in response to the propagation of the first shear wave S1 and/or the second shear wave S2.
Fig. 1 shows a part of an electronic device 1, which may be a hand-held device for participation, i.e. touching or holding, by a user with at least two fingers, e.g. three fingers of the thumb, index finger and middle finger, each finger corresponding to at least one contact point. The electronic device 1 may be a stylus for interacting with another electronic device, e.g. a touch screen of the other electronic device. However, the electronic apparatus 1 may be any suitable device intended to interact with the user, preferably in direct physical contact with the user.
The electronic device 1 comprises a body 2 having a main axis a and a tactile feedback device. The body 2 may be at least partially cylindrical so that a human hand may be held comfortably, as with a conventional pen. In this case, the main axis a corresponds to the central axis of the cylinder.
The haptic feedback device is either formed on the outer surface 2a of the body 2 or is provided on the outer surface 2a of the body 2 along the main axis a. In other words, the haptic feedback device may be part of the body 2 or disposed on the body 2. The tactile feedback device extends at least partially along the body 2, preferably at least throughout the area intended to be in direct contact with the user, as shown in fig. 1 and 2.
The haptic feedback device may be connected to any type of suitable control device. The software of the control device is used to define the order, magnitude and frequency of the haptic feedback using previously stored parameters and/or taking into account user behavioral inputs.
The haptic feedback device comprises a waveguide element 3 extending along a main axis a, a first haptic actuator 4 operatively connected to a first end 3a of the waveguide element 3, and a second haptic actuator 5 operatively connected to a second end 3b of the waveguide element 3. The first haptic actuator 4 is used to generate a first shear wave S1 in the waveguide element 3 and the second haptic actuator 5 is used to generate a second shear wave S2 in the waveguide element 3, as shown in fig. 2 and 3.
The waveguide element 3 is adapted to allow at least one of the first shear wave S1 and the second shear wave S2 to propagate along a continuous path within the waveguide element 3, the first shear wave S1 and the second shear wave S2 propagating along the continuous path in opposite directions. The waveguide element 3 is adapted to provide tactile feedback to a user when the user is engaged in the electronic device 1 in response to propagation of the first shear wave S1 and/or the second shear wave S2.
In other words, the waveguide element 3 provides tactile feedback through tactile contact with the user, and the waveguide element 3 forms a tactile interface in direct physical contact with the user.
The waveguide element 3 may comprise a propagation medium allowing the shear wave to propagate along a predefined continuous path, which in fig. 1 and 2 is helical. The movement of the first haptic actuator 4 and the second haptic actuator 5 generates shear waves in the propagation medium. The propagation medium may be an elastic fluid, optionally including large-sized inclusions that reduce any turbulence within the fluid.
The first haptic actuator 4 and the second haptic actuator 5 may be used to apply a force to the waveguide element 3 in a direction perpendicular to the main axis a. The first haptic actuator 4 and the second haptic actuator 5 may be linear actuators for applying a force in a direction extending radially from the main axis a to the outer surface 2a of the body 2, as shown in fig. 3.
The first haptic actuator 4 and the second haptic actuator 5 may be ultrasonic actuators, electrostatic actuators, electromagnetic actuators, thermal actuators or pneumatic actuators.
Shear waves, also called S-waves or secondary waves, are elastic waves that travel through an object such as the waveguide element 3. The S-wave is transverse, i.e. the oscillation of the S-wave is perpendicular to the direction of wave propagation. In other words, the shear waves S1 and S2 propagate along the main path within the waveguide element 3, as shown in fig. 1 and 2. At the same time, shear waves S1 and S2 oscillate, i.e. have an amplitude perpendicular to the main path or propagation direction, as shown in fig. 3. Oscillations of shear wave S1 and shear wave S2 may be detected as tactile feedback, either intentionally or unintentionally by the user.
The first shear wave S1 and the second shear wave S2 may constructively interfere at one or more points along the continuous path to form a wave of increasing amplitude. When the first shear wave S1 and the second shear wave S2 are generated at the same time, constructive interference may occur. The first shear wave S1 and the second shear wave S2 may generate at least one local interference maximum at one or more user contact points along the outer surface 1a of the electronic device 1. For example, local interference maxima may be generated at each point of contact with the user's hand in turn, or simultaneously, the latter being perceptible. In this way, only two actuators are required to generate local interference maxima at any particular point where a contact point (e.g., finger) is detected, rather than placing three or more actuators at particular locations along the electronic device. Thus, the present invention not only reduces the required components, reduces complexity, but is also more flexible than the prior art.
Accordingly, the first and second shear waves may destructively interfere at one or more points along the continuous path such that the first and second shear waves cancel each other out, at which point no haptic feedback is provided.
In other words, the superposition of the first shear wave S1 and the second shear wave S2 will produce different results. The first shear wave S1 and the second shear wave S2 may be generated within any suitable time interval.
When the first shear wave S1 and the second shear wave S2 are identical and identical in phase, the peaks and valleys of the waves are also precisely aligned. This superposition produces pure constructive interference. The pure constructive interference produces waves that are twice as large in amplitude as a single wave, but the same wavelength. When the first shear wave S1 and the second shear wave S2 are identical but have completely different phases, i.e. the accurate pair of peaks Ji Bogu, pure destructive interference occurs. The amplitude produced by pure destructive interference is zero.
The first shear wave S1 and the second shear wave S2 may generate several local interference maxima such that they form a three-dimensional pattern on the outer surface 1a of the electronic device 1. The pattern may mimic different physical properties such as stiffness, compliance, elasticity, rigidity, inertia, friction, and resistance, or related perceptual properties such as shape and texture, and/or provide other sensory experiences that need to be supported and supplemented when used/indirectly explored through an electronic device.
The continuous path of the waveguide element 3 may extend three-dimensionally along at least a portion of the body 2. As shown in fig. 1, the waveguide element 3 may extend concentrically with the body 2 along the direction of the main axis a. The continuous path may be helical with the central axis of the helix coaxial with the main axis a. The spiral may be one of a cylindrical spiral, a square spiral, and a spiral having an irregular cross section.
On a continuous path extending in three dimensions, adjacent sections 6 may be separated by gaps 7, as shown in figures 1 and 2, such that no one section 6 of the continuous path, such as one coil of a spiral rotating about the main axis a, is in physical contact with any other section 6 of the continuous path. Such contact will have a negative effect on the propagation of the shear waves S1, S2 due to the switching and perception of signals between the coils. The gap 7 may be filled with air or a vibration damping elastic material. The vibration damping elastic material can be silicone or porous polypropylene foam plastic.
The waveguide element 3 may comprise a layered structure as shown in fig. 4, at least the first layer 8 being an elastic layer allowing propagation of the first shear wave S1 and/or the second shear wave S2. The layered structure may further comprise a second layer 10. The second layer 10 serves to insulate the first layer 8 from the body 2 such that lateral oscillations generated by the propagation of the first and second shear waves S1, S2 are at least mostly directed towards the outer surface 1a of the electronic device 1. The second layer 10 may comprise a silicone or polyurethane foam film.
The electronic device 1 may further comprise a cover layer 9 forming an outer surface 1a of the electronic device 1, the cover layer 9 comprising at least one sensor element (not shown) for detecting a user's participation, i.e. a touch, with the electronic device 1. The cover layer 9 may comprise a polymer-based material, optionally optically transparent. The sensor element may be a capacitive sensor that may be used to detect the exact position of the user's fingertip.
The invention also relates to a method of providing haptic feedback to a user of an electronic device 1. As described above, the electronic device includes the main body 2 and the tactile feedback device. The haptic feedback device comprises a waveguide element 3, a first haptic actuator 4 operatively connected to a first end 3a of the waveguide element 3, and a second haptic actuator 5 operatively connected to a second end 3b of the waveguide element 3.
The method comprises the following steps: the user participates in the electronic device 1, such as holding a stylus, at one or more points of contact along the body 2. The first haptic actuator 4 generates a first shear wave S1 in the waveguide element 3 and/or the second haptic actuator 5 generates a second shear wave S2 in the waveguide element 3. Subsequently, propagation of the first shear wave S1 and/or the second shear wave S2 through the waveguide element 3 produces a tactile feedback to the user at the contact point.
The first shear wave S1 and the second shear wave S2 may propagate in opposite directions along a continuous path within the waveguide element 3, the tactile feedback being generated by constructive interference of the first shear wave S1 and the second shear wave S2 at one or more points along the continuous path, wherein at least one point is a user contact point. The first shear wave S1 and the second shear wave S2 may generate local interference maxima at these points, forming a three-dimensional pattern throughout the outer surface 1a of the electronic device 1. Further, the first shear wave and the second shear wave may destructively interfere at one or more points along the continuous path.
Various aspects and implementations have been described herein in connection with various embodiments. However, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed subject matter, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
Reference signs used in the claims shall not be construed as limiting the scope. Unless otherwise indicated, the drawings (e.g., cross-hatching, arrangement of parts, proportion, degree, etc.) should be read together with the specification, and should be considered a portion of the entire written description of this invention. The terms "horizontal," "vertical," "left," "right," "upper" and "lower," as well as adjectives and derivatives thereof (e.g., "horizontally," "rightward," "upward," etc.) as used in this description, when oriented in the particular drawing figures, refer to the direction of the structure as shown. Similarly, the terms "inwardly" and "outwardly" generally refer to the direction of a surface relative to its axis of elongation or axis of rotation (as the case may be).
Claims (20)
1. An electronic device (1), characterized by comprising:
a main body (2) having a main shaft (A);
a tactile feedback device at least partially forming an outer surface (2 a) of the body (2) or being arranged along the main axis (a) at the outer surface (2 a) of the body (2);
the haptic feedback device includes:
-a waveguide element (3) extending along said main axis (a);
a first haptic actuator (4) operatively connected to a first end (3 a) of the waveguide element (3), the first haptic actuator (4) being for generating a first shear wave (S1) in the waveguide element (3);
a second haptic actuator (5) operatively connected to a second end (3 b) of the waveguide element (3), the second haptic actuator (5) being for generating a second shear wave (S2) in the waveguide element (3);
-the waveguide element (3) is adapted to allow at least one of the first shear wave (S1) and the second shear wave (S2) to propagate along a continuous path within the waveguide element (3);
-the first shear wave (S1) and the second shear wave (S2) propagate along the continuous path in opposite directions;
the waveguide element (3) is adapted to provide haptic feedback to a user in response to propagation of the first shear wave (S1) and/or the second shear wave (S2).
2. The electronic device (1) according to claim 1, wherein the first shear wave (S1) and the second shear wave (S2) constructively interfere at one or more points along the continuous path.
3. The electronic device (1) according to claim 1 or 2, wherein the first shear wave (S1) and the second shear wave (S2) destructively interfere at one or more points along the continuous path.
4. The electronic device (1) according to any of the preceding claims, characterized in that the first shear wave (S1) and the second shear wave (S2) create at least one local interference maximum at one or more user contact points along an outer surface (1 a) of the electronic device (1).
5. The electronic device (1) according to claim 4, characterized in that the first shear wave (S1) and the second shear wave (S2) create local interference maxima forming a three-dimensional pattern throughout the outer surface (1 a) of the electronic device (1).
6. The electronic device (1) according to any of the preceding claims, characterized in that the continuous path of the waveguide element (3) extends three-dimensionally along at least a portion of the body (2).
7. The electronic device (1) according to claim 6, wherein on the three-dimensionally extending continuous path, adjacent sections (6) are separated by a gap (7) such that no section (6) of the continuous path is in contact with any other section (6) of the continuous path.
8. Electronic device (1) according to claim 7, characterized in that the gap (7) is filled with air or a vibration-damping elastic material.
9. The electronic device (1) according to any one of the preceding claims, wherein said continuous path is helical, the central axis of said helix being coaxial with said main axis (a).
10. The electronic device (1) according to any one of the preceding claims, wherein the first haptic actuator (4) and the second haptic actuator (5) are adapted to apply a force to the waveguide element (3) in a direction perpendicular to the main axis (a).
11. The electronic device (1) according to any one of the preceding claims, characterized in that the waveguide element (3) comprises a layered structure, at least a first layer (8) being an elastic layer allowing propagation of the first shear wave (S1) and/or the second shear wave (S2).
12. The electronic device (1) according to claim 11, characterized in that the layered structure further comprises a second layer (10), the second layer (10) being for insulating the first layer (8) from the body (2),
so that the lateral oscillations generated by the propagation of the first shear wave (S1) and the second shear wave (S2) are directed at least for the most part towards the outer surface (1 a) of the electronic device (1).
13. The electronic device (1) according to claim 11, further comprising a cover layer (9) forming an outer surface (1 a) of the electronic device (1), the cover layer (9) comprising at least one sensor element for detecting user engagement with the electronic device (1).
14. The electronic device (1) according to claim 13, wherein the cover layer (9) comprises a polymer-based material, optionally the polymer-based material is optically transparent.
15. Electronic device (1) according to claim 13 or 14, characterized in that the sensor element is a capacitive sensor.
16. The electronic device (1) according to any of the preceding claims, characterized in that the electronic device (1) is a stylus for interacting with another electronic device, preferably a touch screen of the other electronic device.
17. A method of providing multi-point haptic feedback to a user of an electronic device (1), the electronic device comprising a body (2) and a haptic feedback device, the haptic feedback device comprising: a waveguide element (3), a first haptic actuator (4) operatively connected to a first end (3 a) of the waveguide element (3), and a second haptic actuator (5) operatively connected to a second end (3 b) of the waveguide element (3); the method comprises the following steps:
-a user engaging in the electronic device (1) at one or more points along the body (2);
-the first haptic actuator (4) generates a first shear wave (S1) in the waveguide element (3) and/or-the second haptic actuator (5) generates a second shear wave (S2) in the waveguide element (3);
propagation of the first shear wave (S1) and/or the second shear wave (S2) through the waveguide element (3) produces the haptic feedback to the user at the contact point.
18. The method according to claim 17, wherein the first shear wave (S1) and the second shear wave (S2) propagate in opposite directions within the waveguide element (3) along a continuous path, the haptic feedback being generated by constructive interference of the first shear wave (S1) and the second shear wave (S2) at one or more points along the continuous path, wherein at least one point is a user contact point.
19. The method according to claim 18, characterized in that the first shear wave (S1) and the second shear wave (S2) generate local interference maxima at the points where they constructively interfere, forming a three-dimensional pattern throughout the outer surface (1 a) of the electronic device (1).
20. The method according to any one of claims 17 to 19, wherein the first shear wave (S1) and the second shear wave (S2) destructively interfere at one or more points along the continuous path.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2021/096810 WO2022246807A1 (en) | 2021-05-28 | 2021-05-28 | Electronic apparatus comprising haptic feedback arrangement and method of providing such feedback |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116888567A true CN116888567A (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180094626.1A Pending CN116888567A (en) | 2021-05-28 | 2021-05-28 | Electronic device including haptic feedback device and method of providing haptic feedback |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116888567A (en) |
| WO (1) | WO2022246807A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003254104A1 (en) * | 2002-07-22 | 2004-02-09 | Measurement Specialties, Inc. | Handheld device having ultrasonic transducer for axial transmission of acoustic signals |
| US9952719B2 (en) * | 2012-05-24 | 2018-04-24 | Corning Incorporated | Waveguide-based touch system employing interference effects |
| US10444927B2 (en) * | 2016-11-04 | 2019-10-15 | Microsoft Technology Licensing, Llc | Stylus hover and position communication protocol |
| US11054935B2 (en) * | 2018-11-19 | 2021-07-06 | Beechrock Limited | Stylus with contact sensor |
| CN110502145A (en) * | 2019-07-31 | 2019-11-26 | 上海交通大学 | Infrared touch-control screen system based on grating |
-
2021
- 2021-05-28 WO PCT/CN2021/096810 patent/WO2022246807A1/en active Application Filing
- 2021-05-28 CN CN202180094626.1A patent/CN116888567A/en active Pending
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| WO2022246807A1 (en) | 2022-12-01 |
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