CA2355434A1 - Multi-point touch pad - Google Patents
Multi-point touch pad Download PDFInfo
- Publication number
- CA2355434A1 CA2355434A1 CA002355434A CA2355434A CA2355434A1 CA 2355434 A1 CA2355434 A1 CA 2355434A1 CA 002355434 A CA002355434 A CA 002355434A CA 2355434 A CA2355434 A CA 2355434A CA 2355434 A1 CA2355434 A1 CA 2355434A1
- Authority
- CA
- Canada
- Prior art keywords
- array
- force
- location
- magnitude
- sampling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000005070 sampling Methods 0.000 claims abstract 14
- 239000000758 substrate Substances 0.000 claims 7
- 229920000642 polymer Polymers 0.000 claims 3
- 239000000853 adhesive Substances 0.000 claims 2
- 230000001070 adhesive effect Effects 0.000 claims 2
- 230000006870 function Effects 0.000 claims 2
- 239000000463 material Substances 0.000 claims 2
- 238000000034 method Methods 0.000 claims 2
- 125000006850 spacer group Chemical group 0.000 claims 2
- 239000013598 vector Substances 0.000 claims 2
- 229920001940 conductive polymer Polymers 0.000 claims 1
- 239000000284 extract Substances 0.000 claims 1
- 238000005457 optimization Methods 0.000 claims 1
- 230000004044 response Effects 0.000 claims 1
Classifications
-
- 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
-
- 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
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
- G06F3/04144—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position using an array of force sensing means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
This invention relates to an input device for computers and other electronic equipment that can detect the presence, location and force of multiple contacts applied to the active surface of the input device. The invention comprises a multi-touch sensor pad input device that includes an array of regularly spaced apart transducers, a contact pad extending over this array, and a sampling and measuring circuit to detect and measure the time, location of application and magnitude of the applied force to each transducer.
Claims (24)
1. A multi-touch sensor input device for detecting the time, location, magnitude, and width of an applied force and converting these to electrical signals with a sampling and measuring circuit, comprising:
a) an array of spaced apart transducers, each transducer having a one-to-one correspondence between force applied to said each transducer region and an electrical parameter of said each transducer;
b) a flexible pad extending over said array operative to extend said force applied over a plurality of nearby transducers.
a) an array of spaced apart transducers, each transducer having a one-to-one correspondence between force applied to said each transducer region and an electrical parameter of said each transducer;
b) a flexible pad extending over said array operative to extend said force applied over a plurality of nearby transducers.
2. A device according to claim 1, wherein said sampling and measuring circuit is coupled to said array and is operative to alternately connect to each transducer region of said array and to detect and measure the time, location of application, the magnitude and width of the applied force to said each transducer.
3. A device according to claim 2, including a force image processing unit coupled to said sampling and measuring circuit operative to receive data from said sampling and measuring circuit and compute the magnitude, and location of application of the applied force.
4. A device according to claim 1, wherein the pad includes a semi-rigid layer and an array of pylons affixed to said semi-rigid layer, each pylon aligned with a corresponding one of said transducers.
5. A device according to claim 4, wherein said pylons each makes contact with said one of said transducers.
6. A device according to claim 1, wherein said transducers change conductance in response to changes in applied force.
7. A device according to claim 6, wherein conductance changes monotonically with an increase in applied force.
8. A device according to claim 3, wherein said force image processing unit contains a force-to-conductance approximation function for each of said transducers for converting conductance readings from said sampling and measuring circuit to applied force.
9. A device according to claim 8, wherein said force image processing unit locates local maxima, defines regions around respective local maxima, distributes forces among overlapping ones of said regions in accordance with a squared distance from each maxima, and computes the magnitude of applied force from the sum of forces in said one region, the location of said applied force from the two-dimensional centroid of said forces around said each maxima, and the width of contact of the applied force from the second moments of said forces.
10. A device according to claim 8, wherein said force image processing unit locates local maxima, defines a region around each said maxima, fits a curve of predefined shape to each said maxima, and extracts parameters such as magnitude of force, location of applied force, time and half-width.
11. A multiple-touch sensor device for detecting the time location, magnitude, and width of one or more applied forces when used in conjunction with a sampling and measuring circuit, said sensor device, comprising:
(a) a substrate;
(b) an array of electrically conductive row pads formed on said substrate interconnected in a series of spaced apart rows;
(c) a flexible sheet dimensioned to overlay said array of pads and operative to extend an applied force over a plurality of nearby pads;
(d) an array of electrically conductive column pads deposited on said flexible sheet interconnected in a series of spaced-apart columns;
(e) an array of pressure sensitive polymer pads deposited on said column pads;
(f) an array of spacer material deposited on one of said substrate and said flexible sheet in a position to form a gap between said row pads and corresponding ones of said pressure sensitive polymer pads;
(g) an array of adhesive spots deposited on one of said substrate and flexible film operative to releasably bond said flexible film to said substrate; and (h) means for connecting each of said rows and columns to an external circuit.
(a) a substrate;
(b) an array of electrically conductive row pads formed on said substrate interconnected in a series of spaced apart rows;
(c) a flexible sheet dimensioned to overlay said array of pads and operative to extend an applied force over a plurality of nearby pads;
(d) an array of electrically conductive column pads deposited on said flexible sheet interconnected in a series of spaced-apart columns;
(e) an array of pressure sensitive polymer pads deposited on said column pads;
(f) an array of spacer material deposited on one of said substrate and said flexible sheet in a position to form a gap between said row pads and corresponding ones of said pressure sensitive polymer pads;
(g) an array of adhesive spots deposited on one of said substrate and flexible film operative to releasably bond said flexible film to said substrate; and (h) means for connecting each of said rows and columns to an external circuit.
12. A sensor device according to claim 11, wherein said substrate is a printed circuit board.
13. A sensor device according to claim 11, wherein said spacer material is a dielectric and is deposited around a periphery of each of said pads of pressure sensitive polymer.
14. A sensor device according to claim 11, wherein said electrically conductive column pads are of conductive polymer.
15. A sensor device according to claim 11, wherein said adhesive is deposited onto said substrate and releasably bonds said flexible film.
16. A sensing circuit having an array of transducers for sensing an external applied force, said transducers interconnected by column traces and row traces, comprising:
a) a column switch in each of said column traces operative when activated to alternately connect each transducer in said column traces to ground;
b) a row switch in each of said row traces operative, when activated, to alternately connect each transducer in said row traces to a sampling circuit; and c) an array control circuit coupled to said column switches and to said row switches operative to activate said column switches and said row switches such that each transducer in said array is alternately connected to ground and to said sampling circuit and wherein said sampling circuit maintains current through said each transducer and also measures output from said each transducer.
a) a column switch in each of said column traces operative when activated to alternately connect each transducer in said column traces to ground;
b) a row switch in each of said row traces operative, when activated, to alternately connect each transducer in said row traces to a sampling circuit; and c) an array control circuit coupled to said column switches and to said row switches operative to activate said column switches and said row switches such that each transducer in said array is alternately connected to ground and to said sampling circuit and wherein said sampling circuit maintains current through said each transducer and also measures output from said each transducer.
17. A sensing circuit. according to claim 16, wherein said row switches connect to an output of a follower circuit whose input is connected to a reference voltage and to an input of an amplifier connected to said reference voltage and having an output connected to an input of an analog-to-digital converter.
18. A sensing circuit according to claim 17, including an analog-to-digital converter coupled to said array amplifier output wherein said array amplifier has a feedback resistor selected so that an input to said analog-to-digital converter produces an output occupying a full range of said analog-to-digital converter output.
19. A sensing circuit according to claim 18, wherein said control circuit is coupled to said analog-to-digital converter and senses completion of a sample so that a next column and row switch can be activated.
20. A sensing circuit, comprising:
(a) a sampling and measuring circuit coupled to a sensor array that provides signals corresponding to time, location and applied force, said sampling and measuring circuit providing a digital output corresponding to said signals;
(a) a force image processing unit coupled to an output of said sampling and measuring circuit operative to receive data from said sampling and measuring circuit and compute the magnitude and location of application of the applied force.
(a) a sampling and measuring circuit coupled to a sensor array that provides signals corresponding to time, location and applied force, said sampling and measuring circuit providing a digital output corresponding to said signals;
(a) a force image processing unit coupled to an output of said sampling and measuring circuit operative to receive data from said sampling and measuring circuit and compute the magnitude and location of application of the applied force.
21. A sensing circuit according to claim 20, wherein said force image processing unit stores the output of said analog-to-digital converter in a force image array via dynamic memory allocation.
22. A sensing circuit according to claim 21, including a microprocessor operative to compute the magnitude and location of an applied force from information stored in said force image array.
23. A method of estimating time, location, magnitude, and width of applied forces on a multi-touch sensor input device, comprising:
a) scanning a force image array and marking values which are local maxima;
b) defining neighbourhoods of n-by-n values around each marked value;
c) distributing forces from elements of said force image array to overlapping regions of said neighbourhoods according to squared distance from and value of said local maxima;
d) calculating the two-dimensional moments on said neighbourhoods to estimate time, location and magnitude of said applied forces; and e) storing final vectors representing time, location and magnitude of said applied forces in memory.
a) scanning a force image array and marking values which are local maxima;
b) defining neighbourhoods of n-by-n values around each marked value;
c) distributing forces from elements of said force image array to overlapping regions of said neighbourhoods according to squared distance from and value of said local maxima;
d) calculating the two-dimensional moments on said neighbourhoods to estimate time, location and magnitude of said applied forces; and e) storing final vectors representing time, location and magnitude of said applied forces in memory.
24. A method of estimating time, location and magnitude of applied forces on a multi-touch sensor input device, comprising:
a) scanning a force image array and marking values which are local maxima;
b) defining neighbourhoods of n-by-n values around each marked value;
c) performing a non-linear optimization on said neighbourhoods using a characteristic function to estimate time, location and magnitude of said applied forces; and d) storing final vectors representing time, location and magnitude of said applied forces in memory.
a) scanning a force image array and marking values which are local maxima;
b) defining neighbourhoods of n-by-n values around each marked value;
c) performing a non-linear optimization on said neighbourhoods using a characteristic function to estimate time, location and magnitude of said applied forces; and d) storing final vectors representing time, location and magnitude of said applied forces in memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002355434A CA2355434A1 (en) | 2000-08-17 | 2001-08-17 | Multi-point touch pad |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002316067A CA2316067A1 (en) | 2000-08-17 | 2000-08-17 | A multi-touch sensor pad input device |
| CA2,316,067 | 2000-08-17 | ||
| CA002355434A CA2355434A1 (en) | 2000-08-17 | 2001-08-17 | Multi-point touch pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2355434A1 true CA2355434A1 (en) | 2002-02-17 |
Family
ID=25682015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002355434A Abandoned CA2355434A1 (en) | 2000-08-17 | 2001-08-17 | Multi-point touch pad |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2355434A1 (en) |
Cited By (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009053492A1 (en) * | 2007-10-26 | 2009-04-30 | Andreas Steinhauser | Single-touch or multi-touch capable touch screens or touch pads comprising an array of pressure sensors and production of such sensors |
| WO2010148512A1 (en) * | 2009-06-25 | 2010-12-29 | Smart Technologies Ulc | Noncontinuous multi-touch analog resistive panel |
| EP2329341A2 (en) * | 2008-08-26 | 2011-06-08 | Motorola Mobility, Inc. | Multi-touch force sensing touch-screen devices and methods |
| EP2333645A1 (en) * | 2008-12-25 | 2011-06-15 | Nissha Printing Co., Ltd. | Touch panel having pressing force detecting function and pressure sensitive sensor for touch panel |
| US8890831B2 (en) | 2005-07-25 | 2014-11-18 | Plastic Logic Limited | Flexible touch screen display |
| WO2015163842A1 (en) * | 2014-04-21 | 2015-10-29 | Yknots Industries Llc | Apportionment of forces for multi-touch input devices of electronic devices |
| US9229600B2 (en) | 2006-06-05 | 2016-01-05 | Flexenable Limited | Multi-touch active display keyboard |
| US9608506B2 (en) | 2014-06-03 | 2017-03-28 | Apple Inc. | Linear actuator |
| US9640048B2 (en) | 2009-09-30 | 2017-05-02 | Apple Inc. | Self adapting haptic device |
| US9652040B2 (en) | 2013-08-08 | 2017-05-16 | Apple Inc. | Sculpted waveforms with no or reduced unforced response |
| US9779592B1 (en) | 2013-09-26 | 2017-10-03 | Apple Inc. | Geared haptic feedback element |
| US9830782B2 (en) | 2014-09-02 | 2017-11-28 | Apple Inc. | Haptic notifications |
| US9886093B2 (en) | 2013-09-27 | 2018-02-06 | Apple Inc. | Band with haptic actuators |
| US9911553B2 (en) | 2012-09-28 | 2018-03-06 | Apple Inc. | Ultra low travel keyboard |
| US9928950B2 (en) | 2013-09-27 | 2018-03-27 | Apple Inc. | Polarized magnetic actuators for haptic response |
| GB2555492A (en) * | 2016-11-01 | 2018-05-02 | Roli Ltd | User interface device |
| US10013058B2 (en) | 2010-09-21 | 2018-07-03 | Apple Inc. | Touch-based user interface with haptic feedback |
| US10039080B2 (en) | 2016-03-04 | 2018-07-31 | Apple Inc. | Situationally-aware alerts |
| US10048757B2 (en) | 2015-03-08 | 2018-08-14 | Apple Inc. | Devices and methods for controlling media presentation |
| US10120446B2 (en) | 2010-11-19 | 2018-11-06 | Apple Inc. | Haptic input device |
| US10126817B2 (en) | 2013-09-29 | 2018-11-13 | Apple Inc. | Devices and methods for creating haptic effects |
| US10133387B2 (en) | 2009-10-26 | 2018-11-20 | Tpk Touch Solutions Inc. | Force sensor integrated cable module and pressure sensitive touch screen |
| US10236760B2 (en) | 2013-09-30 | 2019-03-19 | Apple Inc. | Magnetic actuators for haptic response |
| US10268272B2 (en) | 2016-03-31 | 2019-04-23 | Apple Inc. | Dampening mechanical modes of a haptic actuator using a delay |
| US10276001B2 (en) | 2013-12-10 | 2019-04-30 | Apple Inc. | Band attachment mechanism with haptic response |
| US10353467B2 (en) | 2015-03-06 | 2019-07-16 | Apple Inc. | Calibration of haptic devices |
| US10459521B2 (en) | 2013-10-22 | 2019-10-29 | Apple Inc. | Touch surface for simulating materials |
| US10481691B2 (en) | 2015-04-17 | 2019-11-19 | Apple Inc. | Contracting and elongating materials for providing input and output for an electronic device |
| US10566888B2 (en) | 2015-09-08 | 2020-02-18 | Apple Inc. | Linear actuators for use in electronic devices |
| US10599223B1 (en) | 2018-09-28 | 2020-03-24 | Apple Inc. | Button providing force sensing and/or haptic output |
| US10622538B2 (en) | 2017-07-18 | 2020-04-14 | Apple Inc. | Techniques for providing a haptic output and sensing a haptic input using a piezoelectric body |
| US10691211B2 (en) | 2018-09-28 | 2020-06-23 | Apple Inc. | Button providing force sensing and/or haptic output |
| US11380470B2 (en) | 2019-09-24 | 2022-07-05 | Apple Inc. | Methods to control force in reluctance actuators based on flux related parameters |
| US11809631B2 (en) | 2021-09-21 | 2023-11-07 | Apple Inc. | Reluctance haptic engine for an electronic device |
| US11977683B2 (en) | 2021-03-12 | 2024-05-07 | Apple Inc. | Modular systems configured to provide localized haptic feedback using inertial actuators |
-
2001
- 2001-08-17 CA CA002355434A patent/CA2355434A1/en not_active Abandoned
Cited By (53)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8890831B2 (en) | 2005-07-25 | 2014-11-18 | Plastic Logic Limited | Flexible touch screen display |
| US9229600B2 (en) | 2006-06-05 | 2016-01-05 | Flexenable Limited | Multi-touch active display keyboard |
| US20100315373A1 (en) * | 2007-10-26 | 2010-12-16 | Andreas Steinhauser | Single or multitouch-capable touchscreens or touchpads comprising an array of pressure sensors and the production of such sensors |
| WO2009053492A1 (en) * | 2007-10-26 | 2009-04-30 | Andreas Steinhauser | Single-touch or multi-touch capable touch screens or touch pads comprising an array of pressure sensors and production of such sensors |
| EP2329341A2 (en) * | 2008-08-26 | 2011-06-08 | Motorola Mobility, Inc. | Multi-touch force sensing touch-screen devices and methods |
| EP2333645A1 (en) * | 2008-12-25 | 2011-06-15 | Nissha Printing Co., Ltd. | Touch panel having pressing force detecting function and pressure sensitive sensor for touch panel |
| EP2333645A4 (en) * | 2008-12-25 | 2011-09-07 | Nissha Printing | Touch panel having pressing force detecting function and pressure sensitive sensor for touch panel |
| US8094134B2 (en) | 2008-12-25 | 2012-01-10 | Nissha Printing Co., Ltd. | Touch panel having press detection function and pressure sensitive sensor for the touch panel |
| WO2010148512A1 (en) * | 2009-06-25 | 2010-12-29 | Smart Technologies Ulc | Noncontinuous multi-touch analog resistive panel |
| US11043088B2 (en) | 2009-09-30 | 2021-06-22 | Apple Inc. | Self adapting haptic device |
| US9934661B2 (en) | 2009-09-30 | 2018-04-03 | Apple Inc. | Self adapting haptic device |
| US9640048B2 (en) | 2009-09-30 | 2017-05-02 | Apple Inc. | Self adapting haptic device |
| US11605273B2 (en) | 2009-09-30 | 2023-03-14 | Apple Inc. | Self-adapting electronic device |
| US10475300B2 (en) | 2009-09-30 | 2019-11-12 | Apple Inc. | Self adapting haptic device |
| US10133387B2 (en) | 2009-10-26 | 2018-11-20 | Tpk Touch Solutions Inc. | Force sensor integrated cable module and pressure sensitive touch screen |
| US10013058B2 (en) | 2010-09-21 | 2018-07-03 | Apple Inc. | Touch-based user interface with haptic feedback |
| US10120446B2 (en) | 2010-11-19 | 2018-11-06 | Apple Inc. | Haptic input device |
| US9911553B2 (en) | 2012-09-28 | 2018-03-06 | Apple Inc. | Ultra low travel keyboard |
| US9997306B2 (en) | 2012-09-28 | 2018-06-12 | Apple Inc. | Ultra low travel keyboard |
| US9652040B2 (en) | 2013-08-08 | 2017-05-16 | Apple Inc. | Sculpted waveforms with no or reduced unforced response |
| US9779592B1 (en) | 2013-09-26 | 2017-10-03 | Apple Inc. | Geared haptic feedback element |
| US9928950B2 (en) | 2013-09-27 | 2018-03-27 | Apple Inc. | Polarized magnetic actuators for haptic response |
| US9886093B2 (en) | 2013-09-27 | 2018-02-06 | Apple Inc. | Band with haptic actuators |
| US10126817B2 (en) | 2013-09-29 | 2018-11-13 | Apple Inc. | Devices and methods for creating haptic effects |
| US10651716B2 (en) | 2013-09-30 | 2020-05-12 | Apple Inc. | Magnetic actuators for haptic response |
| US10236760B2 (en) | 2013-09-30 | 2019-03-19 | Apple Inc. | Magnetic actuators for haptic response |
| US10459521B2 (en) | 2013-10-22 | 2019-10-29 | Apple Inc. | Touch surface for simulating materials |
| US10276001B2 (en) | 2013-12-10 | 2019-04-30 | Apple Inc. | Band attachment mechanism with haptic response |
| WO2015163842A1 (en) * | 2014-04-21 | 2015-10-29 | Yknots Industries Llc | Apportionment of forces for multi-touch input devices of electronic devices |
| US10545604B2 (en) | 2014-04-21 | 2020-01-28 | Apple Inc. | Apportionment of forces for multi-touch input devices of electronic devices |
| AU2014391723B2 (en) * | 2014-04-21 | 2018-04-05 | Apple Inc. | Apportionment of forces for multi-touch input devices of electronic devices |
| US9608506B2 (en) | 2014-06-03 | 2017-03-28 | Apple Inc. | Linear actuator |
| US10069392B2 (en) | 2014-06-03 | 2018-09-04 | Apple Inc. | Linear vibrator with enclosed mass assembly structure |
| US9830782B2 (en) | 2014-09-02 | 2017-11-28 | Apple Inc. | Haptic notifications |
| US10490035B2 (en) | 2014-09-02 | 2019-11-26 | Apple Inc. | Haptic notifications |
| US10353467B2 (en) | 2015-03-06 | 2019-07-16 | Apple Inc. | Calibration of haptic devices |
| US10048757B2 (en) | 2015-03-08 | 2018-08-14 | Apple Inc. | Devices and methods for controlling media presentation |
| US10481691B2 (en) | 2015-04-17 | 2019-11-19 | Apple Inc. | Contracting and elongating materials for providing input and output for an electronic device |
| US11402911B2 (en) | 2015-04-17 | 2022-08-02 | Apple Inc. | Contracting and elongating materials for providing input and output for an electronic device |
| US10566888B2 (en) | 2015-09-08 | 2020-02-18 | Apple Inc. | Linear actuators for use in electronic devices |
| US10609677B2 (en) | 2016-03-04 | 2020-03-31 | Apple Inc. | Situationally-aware alerts |
| US10039080B2 (en) | 2016-03-04 | 2018-07-31 | Apple Inc. | Situationally-aware alerts |
| US10809805B2 (en) | 2016-03-31 | 2020-10-20 | Apple Inc. | Dampening mechanical modes of a haptic actuator using a delay |
| US10268272B2 (en) | 2016-03-31 | 2019-04-23 | Apple Inc. | Dampening mechanical modes of a haptic actuator using a delay |
| GB2555492A (en) * | 2016-11-01 | 2018-05-02 | Roli Ltd | User interface device |
| GB2555492B (en) * | 2016-11-01 | 2022-03-02 | Luminary Roli Ltd | User interface device |
| US10622538B2 (en) | 2017-07-18 | 2020-04-14 | Apple Inc. | Techniques for providing a haptic output and sensing a haptic input using a piezoelectric body |
| US10691211B2 (en) | 2018-09-28 | 2020-06-23 | Apple Inc. | Button providing force sensing and/or haptic output |
| US10599223B1 (en) | 2018-09-28 | 2020-03-24 | Apple Inc. | Button providing force sensing and/or haptic output |
| US11380470B2 (en) | 2019-09-24 | 2022-07-05 | Apple Inc. | Methods to control force in reluctance actuators based on flux related parameters |
| US11763971B2 (en) | 2019-09-24 | 2023-09-19 | Apple Inc. | Methods to control force in reluctance actuators based on flux related parameters |
| US11977683B2 (en) | 2021-03-12 | 2024-05-07 | Apple Inc. | Modular systems configured to provide localized haptic feedback using inertial actuators |
| US11809631B2 (en) | 2021-09-21 | 2023-11-07 | Apple Inc. | Reluctance haptic engine for an electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |