WO2015113431A1 - System and method for recognizing objects with continuous capacitance sensing - Google Patents
System and method for recognizing objects with continuous capacitance sensing Download PDFInfo
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- WO2015113431A1 WO2015113431A1 PCT/CN2014/090890 CN2014090890W WO2015113431A1 WO 2015113431 A1 WO2015113431 A1 WO 2015113431A1 CN 2014090890 W CN2014090890 W CN 2014090890W WO 2015113431 A1 WO2015113431 A1 WO 2015113431A1
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- Prior art keywords
- capacitance
- processor
- capacitance sensor
- uid
- capacitive
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F3/00—Board games; Raffle games
- A63F3/00643—Electric board games; Electric features of board games
-
- 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
- G06F3/03543—Mice or pucks
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F3/00—Board games; Raffle games
- A63F3/00643—Electric board games; Electric features of board games
- A63F2003/00662—Electric board games; Electric features of board games with an electric sensor for playing pieces
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F3/00—Board games; Raffle games
- A63F3/00643—Electric board games; Electric features of board games
- A63F2003/00662—Electric board games; Electric features of board games with an electric sensor for playing pieces
- A63F2003/00665—Electric board games; Electric features of board games with an electric sensor for playing pieces using inductance
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F3/00—Board games; Raffle games
- A63F3/00643—Electric board games; Electric features of board games
- A63F2003/00678—Electric board games; Electric features of board games with circuits closed by mechanical means
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F9/00—Games not otherwise provided for
- A63F9/24—Electric games; Games using electronic circuits not otherwise provided for
- A63F2009/2483—Other characteristics
- A63F2009/2485—Other characteristics using a general-purpose personal computer
- A63F2009/2486—Other characteristics using a general-purpose personal computer the computer being an accessory to a board game
-
- 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
- G06F3/0304—Detection arrangements using opto-electronic means
- G06F3/0317—Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface
- G06F3/0321—Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface by optically sensing the absolute position with respect to a regularly patterned surface forming a passive digitiser, e.g. pen optically detecting position indicative tags printed on a paper sheet
Definitions
- the present invention relates to object recognition on an interactive surface, for enhancing the interactivity of an end-user with a computer through manipulation of physical objects, using a combination of capacitive sensor and wireless communication technology.
- computerized games provide players with a visual display of the game activity through an electronic display system, such as a pixilated flat panel display or a touch screen.
- an electronic display system such as a pixilated flat panel display or a touch screen.
- Such displays are not three-dimensional, which prevents the physical interaction inherent in traditional board-based games.
- a traditional board game may use one or more movable game pieces that players (especially young ones) find more “natural” and easier to interact with.
- traditional board games often lack the audio and/or visual interaction that computerized games can offer. Therefore, gaming methods that combine computerized technology with physical play will enhance players gaming experience.
- a computerized system that allows physical objects to be identified and located in a physically bounded environment by means of a computerized system. For example, allowing a computerized system to recognize both the identity of a board game piece and its location on the game board can enhance a player’s experience by allowing their physical actions to be recognized and interpreted by the computer system so as to provide real-time feedback to the player by a multitude of sensorial accessories such as video and/or audio outputs.
- the present invention discloses a system and method to enable a capacitance sensor to further recognize a capacitive action on an object, after the object has been sensed by the capacitance sensor and switched the sensor to an “on” state.
- a capacitive action is performed to a particular object among a plurality of objects to which no capacitive action has been performed.
- a capacitive action is an action by an end-user that changes the capacitive property of an object.
- a capacitive action being performed to a first object may be touching the first object by a finger or a stylus, or may be placing second object on top of the first object.
- a capacitive action being performed to a first object may be the removal of the finger touch, or may be the removal of a second object that has been placed on top of the first object.
- the object may be a button, card, block, sheet, icon, or a figurine.
- the system and method disclosed in the present invention allows the capturing of a capacitive action being performed to the object through a combination of sensor and wireless communication technology.
- the present invention may be valuable for a variety of education, entertainment and productive applications by providing enhanced human-machine interactivity through the manipulation of physical objects.
- FIG. 1 is an exemplary schematic diagram for the process flow of capturing a capacitive action after the capacitance sensor has been switched to an “on” state in accordance with an embodiment of the present invention.
- FIG. 2 is an exemplary schematic diagram for an interactive surface for identifying an object’s ID, location and orientation relative to the interactive surface in accordance with an embodiment of the present invention.
- a touch by a finger is repeatedly used to represent an action that alters the capacitive property of an object
- the use of other means, such as a stylus, an electric conductive material, or a material with high dielectric constant, in order to alter the capacitive property of an object are also within the scope of the present invention.
- capacitance sensors such as a sensor in the SAMD20 series from ATMEL
- Creative usages of functionalities offered by the commercially available capacitance sensors, such as dynamic threshold adjustment during runtime, have allowed for more versatile applications to be enabled. However, they still fail to enable the embodiments in this present invention.
- the SAM D20 Microcontrollers deems a negative capacitance value as an error according to Atmel published literature.
- a commercially available capacitance sensor is enabled to export an indication of the degree of the capacitance sensing signal, instead of a binary outcome.
- a microcomputer unit is used to import proxy values of changes in capacitance from the integrated circuit of the capacitance sensor, and export these values to a computer program to be analyzed for the nature of the capacitive action that has happened to a particular object.
- an object is embedded with a capacitance tab made of high dielectric constant material that is capable of triggering a capacitive action.
- the capacitance sensor is switched to an “on” , or “touched” , or “engaged” , or “activated” state, by the capacitance tab embedded in the object.
- the capacitance sensor senses the change in capacitance by the finger touch and sends the information pertaining to this change in capacitance to a processor that is operatively linked to the capacitance sensor. This finger-touching action acted upon the object that has already been placed upon a capacitance sensor is thereby captured and recorded.
- an object is embedded with an RFID tag containing a unique identification code (UID) .
- the processor Upon the processor receiving a signal representing a change in capacitance from a capacitive action, the processor is configured to direct an RFID reader to read the UID of the object.
- UID unique identification code
- an object is embedded with a capacitance tab made of high electric constant material that is capable of triggering a capacitive action and an RFID tag with the unique ID of the object encoded.
- the capacitance sensor is switched to an “on” , or “touched” , or “engaged” state, by the capacitance tab.
- the capacitance sensor senses the change in capacitance by the finger touch, and sends the change in capacitance to a processor that is operatively linked to the capacitance sensor.
- the processor further determines which object has been touched by instructing an RF antenna and reader to read the UID of the object.
- an array of capacitance sensors and an array of RF antennas are superimposed on each other within a surface to form an interactive surface.
- the processor is configured to activate the RF antenna assigned to the one or more capacitance sensors that have experienced a change in capacitance in order to determine the UID of an object, and to derive the location, UID and orientation of the object, and the entity responsible for the capacitive action.
- values of capacitance and capacitance changes as sensed by the capacitance sensor are pre-measured and pre-calibrated for each object among the plurality of objects under an extensive set of scenarios including being in a “standalone” mode, being touched by a finger and being superimposed on another object or vice versa, with such values processed to generate a set of calibration curves and the calibration curves stored in a computer memory that is operatively linked to the processor.
- the processor is configured to determine the entity responsible for the capacitive action based on capacitance values received from the capacitance sensor and the calibration curves stored in the computer memory.
- FIG. 1 is an exemplary schematic diagram for the process flow of capturing a capacitive action after the capacitance sensor has been switched to an “on” state in accordance with an embodiment of the present invention.
- the first step (101) involves having a user place a 1st object upon the interactive surface. This causes the interactive sensor (s) in contact or in close proximity with the object’s capacitance tab to switch to an “on” state (102) . As this point, a user may either touch the surface of the 1st object (103) or place a 2nd object on top of the 1st object (104) . This further leads the same capacitance sensor (s) to detect another change in capacitance (105) .
- the information pertaining to this new change in capacitance is sent to the processor (106) which subsequently directs the RF antenna assigned to the interactive surface’s capacitance sensor (s) that has experienced the change in capacitance to wirelessly communicate with an object (s) ’s RFID within its broadcasting area and determine the object (s) UID (s) (107) .
- the processor determines that the change in capacitance is attributable to a user touch (110) .
- the processor determines that the new change in capacitance is attributable to a 2nd object placed on top of the 1st object (111) .
- FIG. 2 is an exemplary schematic drawing of the system of the present invention in accordance to one embodiment of the present invention.
- the interactive surface 201 consists of three superimposed layers and a peripheral unit.
- the first layer 202 consists of the substrate or base of the interactive surface.
- the second layer consists of an RF antenna array 203 whose function is to wirelessly determine the UID of an object’s RFID.
- the third layer consists of an array of capacitance sensors 204 whose purpose is to detect the location and orientation of objects placed upon the interactive surface 201. In the particular embodiment described in FIG. 1, each capacitance sensor is assigned to the RF antenna closest to it.
- the peripheral unit consists of the interactive surface’s 201 processor 205, memory unit 206 and power source 207.
- FIG. 2 further shows a number of objects placed upon the surface of the interactive surface 201.
- One object 208 has been placed alone, another object 209 is further being touched by the finger of a user and finally two objects 210, 211 have been placed on the interactive surface 201 with one placed on top of the other.
- Each object is embedded with both a capacitance tab 212 and an RFID tag 213.
- an object 208 embedded with a capacitance tab 212 has been place upon the interactive surface 201, causing the interactive surface’s 201 capacitance sensors 204 to switch into an “on” state.
- the processor 205 Once the processor 205 has determined the location, orientation and UID of the object 208 it stores this information into its memory 206.
- the processor 205 determines this new change in capacitance is attributable to a user touch on the object 209.
- the user places a second object 211 on top of the first object 210. Similar to the second scenario, doing so causes the those capacitance sensor (s) 204 under the first object 210 that have already detected the first object 210 to sense another change in capacitance, and send information pertaining to such change in capacitance to the processor 205. This causes the processor 205 to direct once again the RF antenna assigned to these capacitance sensors 204 under object 210 to read the UID of any object’s RFID tag 213 placed in within the RF antenna’s detection area.
- the processor 205 will read two UIDs, one corresponding to the original first object 210 and a new UID corresponding to the second object 211. In this case, the processor determines that the change in capacitance must be attributable to a second object 211 that has been placed on top of the first object 210. As before, the processor 205 proceeds to store this information into the memory unit 206.
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- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- User Interface Of Digital Computer (AREA)
- Toys (AREA)
- Position Input By Displaying (AREA)
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Abstract
Description
Claims (18)
- A system for capturing a capacitive action being performed to an object, comprising-a plurality of objects, each embedded with a capacitance tab and a unique identification code (UID) ,-a capacitance sensor that is operatively linked to a processor,-a reader whose detection range encompasses the detection range of the capacitance sensor, and is operatively linked to the processor,wherein, after a first object has been placed on the capacitance sensor and thereby the capacitance sensor has switched to an “on” state from an “off” state, and further upon a capacitive action being performed to the first object, the capacitance sensor senses a change in capacitance of the first object, and the processor is configured to receive a signal representing the change in capacitance from the capacitance sensor and direct the reader to detect UID.
- The system in claim 1, wherein the capacitive action being performed to an object is selected from a group comprising-touching the object by a finger, and removing from the object the finger touch,-placing a finger in proximity with the object, and removing the finger from the proximity of the object,-touching the object with a physical stylus, and removing the physical stylus from the object,-touching the object with a device capable of causing a change in capacitive property of the object, and removing such device from the object,-approaching the object with a device capable of causing a change in capacitive property of the object, and moving such device away from the object.
- The system in claim 1, wherein the capacitive action being performed is placing a second object on top of the first object, the reader detects the UID of the first object and a new UID, and the processor is configured to assign the new UID to the second object.
- The system in claim 3, wherein a third object is placed on top of the second object, the reader detects the UID of the first object, the UID of the second object, and a new UID, and the processor is configured to assign the new UID to the third object.
- The system in claim 1, wherein the UID is encoded with an RFID tag, and the reader is an RF antenna and reader module.
- The system in claim 1, further comprising an array of capacitance sensors, and an array of readers, embedded within an interactive surface, wherein, upon a plurality of objects having been placed on the interactive surface, the processor is configured to capture a capacitive action that is happening to any one object.
- The system in claim 1, wherein an object is selected from a group comprising a button, card, block, sheet, icon, or figurine.
- A system for capturing a capacitive action being performed to an object, comprising-a plurality of objects, each embedded with a capacitance tab,-a capacitance sensor that is operatively linked to a processor,wherein, after a first object has been placed on the capacitance sensor and thereby the capacitance sensor has switched to an “on” state from an “off” state, and further upon a capacitive action being performed to the first object, the capacitance sensor senses a change in capacitance of the first object, and the processor is configured to receive a signal representing the change in capacitance from the capacitance sensor.
- The system in claim 8, further comprising a memory that is operatively linked to the processor and stores a set of calibration curves regarding an object and values of capacitance as the object being sensed by the capacitance sensor, wherein, the processor is configured to determine the entity responsible for the capacitive action based on capacitance values received from the capacitance sensor and calibration curves.
- A method for capturing a capacitive action being performed to an object, comprising-placing a first object on a capacitance sensor to switch the capacitive sensor to an “on” state from an “off” state, wherein the first object is among a plurality of objects, each embedded with a capacitance tab and a unique identification code (UID) ,-performing a capacitive action to the first object,-sensing a change in capacitance of the first object by the capacitance sensor that is operatively linked to the processor,-receiving a signal representing the change in capacitance from the capacitance sensor by a processor that is operatively linked to the capacitance sensor,-directing, by the processor, a reader, that is operatively linked to the processor and whose detection range encompasses the detection range of the capacitance sensor, to detect UID.
- The method in claim 10, wherein the capacitive action being performed to an object is selected from a group comprising-touching the object by a finger, and removing from the object the finger touch,-placing a finger in proximity with the object, and removing the finger from the proximity of the object,-touching the object with a physical stylus, and removing the physical stylus from the object,-touching the object with a device capable of causing a change in capacitive property of the object, and removing such device from the object,-approaching the object with a device capable of causing a change in capacitive property of the object, and moving such device away from the object.
- The method in claim 10, wherein the capacitive action being performed is placing a second object on top of the first object, and the reader detects the UID of the first object and a new UID, and further comprising, assigning the new UID to the second object by the processor.
- The method of claim 12, further comprising, placing a third object on top of the second object, detecting the UID of the first object, the UID of the second object, and a new UID by the reader, and assigning the new UID to the third object.
- The method in claim 10, wherein the UID is encoded with an RFID tag, and the reader is an RF antenna and reader module.
- The method in claim 10, further comprising an array of capacitance sensors, and an array of readers, embedded within an interactive surface, wherein, upon a plurality of objects having been placed on the interactive surface, the processor is configured to capture a capacitive action that is happening to any one object.
- The method in claim 10, wherein an object is selected from a group comprising a button, card, block, sheet, icon, or figurine.
- A method for capturing a capacitive action being performed to an object, comprising-placing a first object on a capacitance sensor to switch the capacitive sensor to an “on” state from an “off” state, wherein the first object is among a plurality of objects, each embedded with a capacitance tab,-performing a capacitive action to the first object,-sensing a change in capacitance of the first object by the capacitance sensor that is operatively linked to the processor,-receiving a signal representing the change in capacitance from the capacitance sensor by a processor that is operatively linked to the capacitance sensor.
- The method in claim 17, further comprising, determining the entity responsible for the capacitive action from the change in capacitance received from the capacitance sensor, based on a set of calibration curves that are stored in a memory that is operatively linked to the processor.
Priority Applications (23)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14881277.9A EP3100142A1 (en) | 2014-01-30 | 2014-11-12 | System and method for recognizing objects with continuous capacitance sensing |
KR1020167020207A KR20160105825A (en) | 2014-01-30 | 2014-11-12 | System and method for recognizing objects with continuous capacitance sensing |
CN201480051147.1A CN105592897A (en) | 2014-01-30 | 2014-11-12 | System and method for recognizing objects with continuous capacitance sensing |
CN201480073599.XA CN105917293B (en) | 2014-01-30 | 2014-11-14 | The system and method interacted using object with language element |
PCT/CN2014/091143 WO2015113433A1 (en) | 2014-01-30 | 2014-11-14 | System and method to interact with elements of a language using physical objects |
CN201480061857.2A CN105723306B (en) | 2014-01-30 | 2014-11-21 | Change the system and method for the state of user interface element of the label on object |
PCT/CN2014/092048 WO2015113441A1 (en) | 2014-01-30 | 2014-11-24 | System and method for recognizing objects placed together using sensors |
CN201480065185.2A CN105813699A (en) | 2014-01-30 | 2014-11-24 | System and method for recognizing objects placed together using sensors |
PCT/CN2015/070162 WO2015113457A1 (en) | 2014-01-30 | 2015-01-06 | Apparatus and method to enhance expressive qualities of digital music |
CN201580000167.0A CN105027192B (en) | 2014-01-30 | 2015-01-06 | Enhance the device and method of digital music expressive force |
EP15743177.6A EP3100258A4 (en) | 2014-01-30 | 2015-01-06 | Apparatus and method to enhance expressive qualities of digital music |
JP2016548113A JP2017507349A (en) | 2013-03-12 | 2015-01-06 | Apparatus and method for enhancing the expression quality of digital music |
KR1020167020190A KR101813557B1 (en) | 2014-01-30 | 2015-01-06 | Apparatus and method to enhance expressive qualities of digital music |
PCT/CN2015/072626 WO2015131746A2 (en) | 2014-03-06 | 2015-02-10 | A system and method for directing an object to move on an interactive surface through a defined path |
US14/696,497 US20150242018A1 (en) | 2014-01-30 | 2015-04-27 | System and method for recognizing objects with continuous capacitance sensing |
PCT/CN2015/079606 WO2016074465A1 (en) | 2014-11-12 | 2015-05-22 | System and accompanying method for interacting with card and interactive surface |
US14/737,514 US9299330B2 (en) | 2014-01-30 | 2015-06-12 | Apparatus and method to enhance the expressive qualities of digital music |
US14/819,456 US20160162036A1 (en) | 2014-11-12 | 2015-08-06 | System and accompanying method for interacting with a card on an interactive surface |
US14/830,757 US20160180734A1 (en) | 2014-01-30 | 2015-08-20 | System and method to interact with elements of a language using physical objects |
US15/057,092 US9690473B2 (en) | 2014-06-13 | 2016-02-29 | System and method for changing the state of user interface element marked on physical objects |
US15/086,092 US9737802B2 (en) | 2014-06-13 | 2016-03-31 | System and method for recognizing objects placed together using sensors |
US15/221,619 US20160334906A1 (en) | 2014-11-12 | 2016-07-28 | System and method for detecting an end-user action regarding an object based on heuristics |
US15/241,085 US10105589B2 (en) | 2014-03-06 | 2016-08-19 | System and method for directing an object to move on an interactive surface through a defined path |
Applications Claiming Priority (8)
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CNPCT/CN2014/071850 | 2014-01-30 | ||
PCT/CN2014/071850 WO2014139349A1 (en) | 2013-03-12 | 2014-01-30 | System and method for identifying an object's id and location relative to an interactive surface |
PCT/CN2014/072961 WO2014139369A1 (en) | 2013-03-12 | 2014-03-06 | System and method for identifying object's id and location relative to interactive surface |
CNPCT/CN2014/072961 | 2014-03-06 | ||
PCT/CN2014/079892 WO2015113359A1 (en) | 2013-03-12 | 2014-06-13 | System and method for identifying an object's id and location relative to an interactive surface |
CNPCT/CN2014/079892 | 2014-06-13 | ||
PCT/CN2014/080495 WO2015113365A1 (en) | 2014-01-30 | 2014-06-23 | System and method to recognize object's id, orientation and location relative to interactive surface |
CNPCT/CN2014/080495 | 2014-06-23 |
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PCT/CN2014/080495 Continuation-In-Part WO2015113365A1 (en) | 2013-03-12 | 2014-06-23 | System and method to recognize object's id, orientation and location relative to interactive surface |
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PCT/CN2014/084498 Continuation-In-Part WO2015113395A1 (en) | 2014-01-30 | 2014-08-15 | System and method for directing a moving object on an interactive surface |
PCT/CN2014/091143 Continuation-In-Part WO2015113433A1 (en) | 2014-01-30 | 2014-11-14 | System and method to interact with elements of a language using physical objects |
PCT/CN2014/091918 Continuation-In-Part WO2015113440A1 (en) | 2013-03-12 | 2014-11-21 | System and method for changing the state of user interface element marked on physical objects |
PCT/CN2014/092048 Continuation-In-Part WO2015113441A1 (en) | 2014-01-30 | 2014-11-24 | System and method for recognizing objects placed together using sensors |
PCT/CN2015/070162 Continuation-In-Part WO2015113457A1 (en) | 2013-03-12 | 2015-01-06 | Apparatus and method to enhance expressive qualities of digital music |
PCT/CN2015/072626 Continuation-In-Part WO2015131746A2 (en) | 2014-03-06 | 2015-02-10 | A system and method for directing an object to move on an interactive surface through a defined path |
US14/696,497 Continuation US20150242018A1 (en) | 2014-01-30 | 2015-04-27 | System and method for recognizing objects with continuous capacitance sensing |
PCT/CN2015/079606 Continuation-In-Part WO2016074465A1 (en) | 2014-11-12 | 2015-05-22 | System and accompanying method for interacting with card and interactive surface |
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PCT/CN2014/080495 WO2015113365A1 (en) | 2013-03-12 | 2014-06-23 | System and method to recognize object's id, orientation and location relative to interactive surface |
PCT/CN2014/090890 WO2015113431A1 (en) | 2013-03-12 | 2014-11-12 | System and method for recognizing objects with continuous capacitance sensing |
PCT/CN2014/091918 WO2015113440A1 (en) | 2013-03-12 | 2014-11-21 | System and method for changing the state of user interface element marked on physical objects |
PCT/CN2014/093763 WO2015113446A1 (en) | 2013-03-12 | 2014-12-12 | Apparatus and method for eliminating blind spot in an rf antenna array |
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PCT/CN2014/093763 WO2015113446A1 (en) | 2013-03-12 | 2014-12-12 | Apparatus and method for eliminating blind spot in an rf antenna array |
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EP (2) | EP3100142A1 (en) |
WO (4) | WO2015113365A1 (en) |
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WO2017181861A1 (en) * | 2016-04-19 | 2017-10-26 | Zheng Shi | System and method for detecting object |
CN108292184A (en) * | 2015-08-27 | 2018-07-17 | 施政 | Device and method for radio frequency identification touch panel |
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Also Published As
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WO2015113446A1 (en) | 2015-08-06 |
EP3100148A1 (en) | 2016-12-07 |
WO2015113365A1 (en) | 2015-08-06 |
WO2015113440A1 (en) | 2015-08-06 |
EP3100142A1 (en) | 2016-12-07 |
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