[go: up one dir, main page]

WO2018107344A1 - Système portable de rétroaction haptique ultrasonore - Google Patents

Système portable de rétroaction haptique ultrasonore Download PDF

Info

Publication number
WO2018107344A1
WO2018107344A1 PCT/CN2016/109548 CN2016109548W WO2018107344A1 WO 2018107344 A1 WO2018107344 A1 WO 2018107344A1 CN 2016109548 W CN2016109548 W CN 2016109548W WO 2018107344 A1 WO2018107344 A1 WO 2018107344A1
Authority
WO
WIPO (PCT)
Prior art keywords
ultrasonic
control unit
signal
matrix layer
transmitter
Prior art date
Application number
PCT/CN2016/109548
Other languages
English (en)
Inventor
Na LEI
Original Assignee
Shenzhen Dansha Technology Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Dansha Technology Co., Ltd. filed Critical Shenzhen Dansha Technology Co., Ltd.
Priority to PCT/CN2016/109548 priority Critical patent/WO2018107344A1/fr
Priority to CN201680091487.6A priority patent/CN110226151A/zh
Publication of WO2018107344A1 publication Critical patent/WO2018107344A1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

Definitions

  • the present patent application generally relates to human machine interaction technologies and more specifically to a wearable ultrasonic haptic feedback system.
  • HMI human machine interaction
  • the user relies on vision to capture an instruction or confirmation mark on the screen and to determine the next operation based on the mark.
  • visual feedback cannot satisfy the requirements of specific application. For example, when driving a vehicle, if the driver relies on his vision to operate a GPS navigation system, his sight will move to the screen from the road, which constitutes a potential safety hazard. For another example, under strong light, a user may find it very difficult to read the content being displayed on a display. For a person with vision disorder, it would not be possible to use feedback based on vison even under a normal lighting condition.
  • a sensing feedback system is required to have sufficiently high accuracy and resolution in many application scenarios.
  • the applications of some existing feedback systems that do not rely on vision feedback are limited because of the relatively low accuracy and resolution. Therefore, it is desired to provide a sense feedback system that does not rely on vision but has relatively high accuracy and resolution so as to meet requirements of human machine interaction in various application scenarios.
  • the wearable ultrasonic haptic feedback system includes: a substrate layer; an ultrasonic transmitter matrix layer disposed above the substrate layer and including a plurality of ultrasonic transmitters; a first adhesive layer disposed between the ultrasonic transmitter matrix layer and the substrate layer and configured to make the ultrasonic transmitter matrix layer adhere to the substrate layer; a converter matrix layer disposed below the substrate layer and including a plurality of converters; a second adhesive layer disposed between the substrate layer and the converter matrix layer and configured to make the substrate layer adhere to the converter matrix layer; a first control unit connected with the ultrasonic transmitter matrix layer; an RF receiver connected with the first control unit; a second control unit connected with the converter matrix layer; an RF transmitter connected with the second control unit; a cover layer covering outside of the ultrasonic transmitter matrix layer and the converter matrix layer, the RF transmitter and the RF receiver being respectively disposed at surface of the converter matrix layer and surface of the ultrasonic transmitter matrix layer,
  • Thickness of the converter matrix layer is less than thickness of the ultrasonic transmitter matrix layer.
  • the ultrasonic transmitters are configured to be controlled by the first control unit to transmit an ultrasonic signal of a preset frequency respectively.
  • the converters are configured to be respectively controlled by the second control unit to sense an ultrasonic signal and convert the sensed ultrasonic signal to an electrical signal.
  • the RF transmitter is configured to transmit the electrical signal through an RF signal of a preset frequency.
  • the RF receiver is configured to receive the RF signal transmitted by the RF transmitter and restore the electrical signal from the RF signal.
  • the second control unit is configured to select any converter in the converter matrix layer as a selected converter.
  • the first control unit is configured to sequentially control each ultrasonic transmitter in the ultrasonic transmitter matrix layer to transmit a calibrating ultrasonic signal.
  • the calibrating ultrasonic signal is transmitted to the selected converter and sensed thereby so as to produce a sensing electrical signal.
  • the sensing electrical signal is controlled by the second control unit, transmitted by the RF transmitter in form of an RF signal, and received by the RF receiver.
  • the first control unit is configured to perform a time reversal transformation on the sensing electrical signal received by the RF receiver and store an electrical signal waveform resulted from the transformation.
  • the first control unit After the transformed electrical signal waveforms corresponding to all ultrasonic transmitters of the ultrasonic transmitter matrix layer are stored in the first control unit, the first control unit is configured to drive the ultrasonic transmitters simultaneously with the stored electrical signal waveforms that correspond to the ultrasonic transmitters respectively, so that ultrasonic waves transmitted by the ultrasonic transmitters are focused at the selected converter s location, thereby generating haptic stimulation to a user.
  • the first control unit is configured to again sequentially control each ultrasonic transmitter in the ultrasonic transmitter matrix layer to transmit a calibrating ultrasonic signal. The calibrating ultrasonic signal is transmitted to the selected converter and sensed thereby so as to produce a sensing electrical signal.
  • the sensing electrical signal is controlled by the second control unit, transmitted by the RF transmitter in form of an RF signal, and received by the RF receiver.
  • the first control unit is configured to perform a time reversal transformation on the sensing electrical signal received by the RF receiver and store an electrical signal waveform resulted from the transformation.
  • the present patent application provides a wearable ultrasonic haptic feedback system that includes: a substrate layer; an ultrasonic transmitter matrix layer disposed above the substrate layer and including a plurality of ultrasonic transmitters; a converter matrix layer disposed below the substrate layer and including a plurality of converters; a first control unit connected with the ultrasonic transmitter matrix layer; an RF receiver connected with the first control unit; a second control unit connected with the converter matrix layer; and an RF transmitter connected with the second control unit.
  • the ultrasonic transmitters are configured to be controlled by the first control unit to transmit an ultrasonic signal of a preset frequency respectively.
  • the converters are configured to be respectively controlled by the second control unit to sense an ultrasonic signal and convert the sensed ultrasonic signal to an electrical signal.
  • the RF transmitter is configured to transmit the electrical signal through an RF signal of a preset frequency.
  • the RF receiver is configured to receive the RF signal transmitted by the RF transmitter and restore the electrical signal from the RF signal.
  • the second control unit is configured to select any converter in the converter matrix layer as a selected converter.
  • the first control unit is configured to sequentially control each ultrasonic transmitter in the ultrasonic transmitter matrix layer to transmit a calibrating ultrasonic signal.
  • the calibrating ultrasonic signal is transmitted to the selected converter and sensed thereby so as to produce a sensing electrical signal.
  • the sensing electrical signal is controlled by the second control unit, transmitted by the RF transmitter in form of an RF signal, and received by the RF receiver.
  • the first control unit is configured to perform a time reversal transformation on the sensing electrical signal received by the RF receiver and store an electrical signal waveform resulted from the transformation. After the transformed electrical signal waveforms corresponding to all ultrasonic transmitters of the ultrasonic transmitter matrix layer are stored in the first control unit, the first control unit is configured to drive the ultrasonic transmitters simultaneously with the stored electrical signal waveforms that correspond to the ultrasonic transmitters respectively, so that ultrasonic waves transmitted by the ultrasonic transmitters are focused at the selected converter s location, thereby generating haptic stimulation to a user.
  • Thickness of the converter matrix layer may be less than thickness of the ultrasonic transmitter matrix layer.
  • the calibrating ultrasonic signals being used for different ultrasonic transmitters may have the same strength.
  • the calibrating ultrasonic signals being used for different ultrasonic transmitters may have different strengths.
  • the wearable ultrasonic haptic feedback system may further include a display device connected with the first control unit and configured to display signal strength of signals received by the RF receiver.
  • the first control unit may be configured to again sequentially control each ultrasonic transmitter in the ultrasonic transmitter matrix layer to transmit a calibrating ultrasonic signal.
  • the calibrating ultrasonic signal may be transmitted to the selected converter and sensed thereby so as to produce a sensing electrical signal.
  • the sensing electrical signal may be controlled by the second control unit, transmitted by the RF transmitter in form of an RF signal, and received by the RF receiver.
  • the first control unit may be configured to perform a time reversal transformation on the sensing electrical signal received by the RF receiver and store an electrical signal waveform resulted from the transformation.
  • the first control unit may be configured to again sequentially control each ultrasonic transmitter in the ultrasonic transmitter matrix layer to transmit a calibrating ultrasonic signal.
  • the calibrating ultrasonic signal may be transmitted to the selected converter and sensed thereby so as to produce a sensing electrical signal.
  • the sensing electrical signal may be controlled by the second control unit, transmitted by the RF transmitter in form of an RF signal, and received by the RF receiver.
  • the first control unit may be configured to perform a time reversal transformation on the sensing electrical signal received by the RF receiver and store an electrical signal waveform resulted from the transformation.
  • the wearable ultrasonic haptic feedback system may further include a first adhesive layer and a second adhesive layer.
  • the substrate layer may be made of a textile material with a certain thickness and structural strength.
  • the first adhesive layer may be disposed between the ultrasonic transmitter matrix layer and the substrate layer and configured to make the ultrasonic transmitter matrix layer adhere to the substrate layer.
  • the second adhesive layer may be disposed between the substrate layer and the converter matrix layer and configured to make the substrate layer adhere to the converter matrix layer.
  • the wearable ultrasonic haptic feedback system may further include a cover layer covering outside of the ultrasonic transmitter matrix layer and the converter matrix layer.
  • the RF transmitter and the RF receiver may be respectively disposed at surface of the converter matrix layer and surface of the ultrasonic transmitter matrix layer, and sealed by the cover layer.
  • the cover layer may be made of a material capable of shielding EMI.
  • FIG. 1 is a block diagram of a wearable ultrasonic haptic feedback system in accordance with an embodiment of the present patent application.
  • FIG. 2 illustrates an ultrasonic transmitter matrix layer of the wearable ultrasonic haptic feedback system depicted in FIG. 1.
  • FIG. 3 illustrates a converter matrix layer of the wearable ultrasonic haptic feedback system depicted in FIG. 1.
  • FIG. 1 is a block diagram of a wearable ultrasonic haptic feedback system in accordance with an embodiment of the present patent application.
  • the wearable ultrasonic haptic feedback system includes: a substrate layer 101; an ultrasonic transmitter matrix layer 103 disposed above the substrate layer 101; a converter matrix layer 105 disposed below the substrate layer 101; a first control unit 107 connected with the ultrasonic transmitter matrix layer 103; an RF receiver 109 connected with the first control unit 107; a second control unit 111 connected with the converter matrix layer 105; and an RF transmitter 113 connected with the second control unit 111.
  • FIG. 2 illustrates the ultrasonic transmitter matrix layer 103 of the wearable ultrasonic haptic feedback system depicted in FIG. 1.
  • the ultrasonic transmitter matrix layer 103 includes a plurality of ultrasonic transmitters 201.
  • the ultrasonic transmitters 201 are configured to be controlled by the first control unit 107 to transmit an ultrasonic signal of a preset frequency respectively.
  • FIG. 3 illustrates the converter matrix layer 105 of the wearable ultrasonic haptic feedback system depicted in FIG. 1.
  • the converter matrix layer 105 includes a plurality of converters 301.
  • the converters 301 are configured to be respectively controlled by the second control unit 111 to sense an ultrasonic signal and convert the sensed ultrasonic signal to an electrical signal.
  • the RF transmitter 113 is configured to transmit the electrical signal through an RF signal of a preset frequency.
  • the RF receiver 109 is configured to receive the RF signal transmitted by the RF transmitter 113, and restore the electrical signal from the RF signal.
  • the second control unit 111 is configured to select any converter 3011 in the converter matrix layer 105 as a selected ultrasonic vibration feedback focus point (i.e. a selected converter).
  • the first control unit 107 is configured to control a first ultrasonic transmitter 2011 in the ultrasonic transmitter matrix layer 103 to transmit a calibrating ultrasonic signal S1.
  • the calibrating ultrasonic signal S1 is transmitted to the selected converter 3011 and sensed by the selected converter 3011 so as to produce a sensing electrical signal S1’.
  • the sensing electrical signal S1’ is controlled by the second control unit 111, transmitted by the RF transmitter 113 in form of an RF signal, and received by the RF receiver 109.
  • the first control unit 107 is configured to perform a time reversal transformation on the received signal S1’ and store an electrical signal waveform RS1 resulted from the transformation.
  • the first control unit 107 is configured to control a second ultrasonic transmitter 2012 in the ultrasonic transmitter matrix layer 103 to transmit a calibrating ultrasonic signal S2.
  • the calibrating ultrasonic signal S2 is transmitted to the selected converter 3011 and sensed by the selected converter 3011 so as to produce a sensing electrical signal S2’.
  • the sensing electrical signal S2’ is controlled by the second control unit 111, transmitted by the RF transmitter 113 in form of an RF signal, and received by the RF receiver 109.
  • the first control unit 107 is configured to perform a time reversal transformation on the received signal S2’ and store an electrical signal waveform RS2 resulted from the transformation.
  • the wearable ultrasonic haptic feedback system continues to repeat the above operations with other ultrasonic transmitters of the ultrasonic transmitter matrix layer 103, until all electrical signal waveforms corresponding to all ultrasonic transmitters of the ultrasonic transmitter matrix layer 103 are stored in the first control unit 107.
  • the wearable ultrasonic haptic feedback system completes automatic calibration and preparation for transmitting and focusing ultrasonic waves toward the selected ultrasonic vibration feedback focus point 3011.
  • the calibrating ultrasonic signals S1, S2, and etc. being used for different ultrasonic transmitters may have the same strength or different strengths.
  • the strength of the calibrating ultrasonic signals maybe enhanced so that the calibrating ultrasonic signals may be accurately sensed by the selected ultrasonic vibration feedback focus point 3011.
  • the first control unit 107 is configured to drive the ultrasonic transmitters simultaneously with the electrical signal waveforms that correspond to the ultrasonic transmitters respectively, so that the ultrasonic waves transmitted by the ultrasonic transmitters are focused at the selected ultrasonic vibration feedback focus point (i.e. the selected converter 3011’s location) thereby generating haptic stimulation to the user.
  • the thickness of the converter matrix layer 105 is less than the thickness of the ultrasonic transmitter matrix layer 103, so as to make it easy for the user to feel the focus point of the ultrasonic waves.
  • the calibrating ultrasonic signal S1 in the process of the calibrating ultrasonic signal S1 transmitting through the substrate layer 101 and being sensed by the selected converter 3011, the calibrating ultrasonic signal S1 will be unavoidably reflected, scattered and attenuated.
  • the ultrasonic signal being actually sensed by the converter 3011 may be very different from the calibrating ultrasonic signal S1.
  • the electrical signal S’ when the electrical signal S’ is transmitted to the first control unit 107, time reversal transformed, and used to drive the ultrasonic transmitter, based on the physical principle of time reversal of sonic waves, ultrasonic waves transmitted by different ultrasonic transmitters will be focused on the selected converter 3011.
  • the wearable ultrasonic haptic feedback system may further include a display device (not shown in FIG. 1) connected with the first control unit 107 and configured to display the signal strength of signals received by the RF receiver 109.
  • the signal is transmitted by the RF transmitter 113, representing the ultrasonic wave strength at the location of the selected converter 3011.
  • the haptic feedback for the user will be attenuated greatly. When this happens, the user is able to get confirmation from the readings of the display device.
  • the system may also receive a preset threshold.
  • the ultrasonic wave strength at the location of the selected converter 3011 i.e. the strength of the signal received by the RF receiver 109, or the signal strength displayed by the display device
  • the threshold When the ultrasonic wave strength at the location of the selected converter 3011 (i.e. the strength of the signal received by the RF receiver 109, or the signal strength displayed by the display device) is lower than the threshold, one or multiple above-mentioned automatic calibration operations will be reinitiated.
  • the substrate layer 101 is made of a textile material with a certain thickness and structural strength.
  • the wearable ultrasonic haptic feedback system further includes a first adhesive layer 107 and a second adhesive layer 109.
  • the first adhesive layer 107 is disposed between the ultrasonic transmitter matrix layer 103 and the substrate layer 101 and configured to make the ultrasonic transmitter matrix layer 103 adhere to the substrate layer 101.
  • the second adhesive layer 109 is disposed between the substrate layer 101 and the converter matrix layer 105 and configured to make the substrate layer 101 adhere to the converter matrix layer 105.
  • the wearable ultrasonic haptic feedback system may further include a cover layer (not shown in FIG. 1).
  • the cover layer covers the outside of the ultrasonic transmitter matrix layer 103 and the converter matrix layer 105.
  • the RF transmitter 113 and the RF receiver 109 are respectively disposed at the surface of the converter matrix layer 105 and the surface of the ultrasonic transmitter matrix layer 103, and sealed by the cover layer.
  • the cover layer is made of a material with strong capability of shielding EMI (Electromagnetic Interference) so as to prevent the RF communication between the RF transmitter 113 and the RF receiver 109 from being interfered by electromagnetic radiations surrounding the system.
  • EMI Electromagnetic Interference
  • the second control unit may further be connected with an external device, such as a computer or a game console, and configured to be controlled by the external device to select any converter in the converter matrix layer as the selected converter to receive the focused ultrasonic waves so as to generate a haptic stimulation that the user can feel and thereby realize haptic sensation feedback.
  • an external device such as a computer or a game console
  • the calibrating ultrasonic signal is transmitted through the substrate layer and sensed by the selected converter, the ultrasonic signal being actually sensed by the selected converter includes spatial information related to the transmission media by which the ultrasonic signal travels as well as the shape and size of the converter itself.
  • Such spatial information in form of RF signals, is transmitted from the RF transmitter to the RF receiver, and is processed by the first control unit undergoing time reversal transformation so as to generate the driving signals required to focus the ultrasonic waves to the selected location.
  • the transmission of RF signals is more accurate and stable than transmission of ultrasonic wave signals
  • the determination of the location of the ultrasonic wave focus point may be very accurate, and the resolution of the converters in the converter matrix layer may reach a relative high value, thereby realizing ultrasonic haptic feedback of high accuracy and high resolution.
  • the above wearable ultrasonic haptic feedback system may be conveniently integrated to apparel products such as gloves, clothes, decorative items, at a low cost, and therefore can be widely applied to various application scenarios.

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)
  • User Interface Of Digital Computer (AREA)

Abstract

L'invention concerne un système portable de rétroaction haptique ultrasonore qui comprend : une couche de substrat (101) ; une couche de matrice d'émetteur d'ultrasons (103) disposée au-dessus de la couche de substrat (101) et comprenant une pluralité d'émetteurs d'ultrasons (201) ; une couche de matrice de convertisseur (105) disposée en dessous de la couche de substrat (101) et comprenant une pluralité de convertisseurs (301) ; une première unité de commande (107) connectée à la couche de matrice d'émetteur d'ultrasons (103) ; un récepteur RF (109) connecté à la première unité de commande (107) ; une seconde unité de commande (111) connectée à la couche de matrice de convertisseur (105) ; un émetteur RF (113) connecté à la seconde unité de commande (111). L'émetteur RF (113) est configuré de sorte à transmettre le signal électrique au moyen d'un signal RF d'une fréquence préétablie. Le récepteur RF (109) est configuré de sorte à recevoir le signal RF transmis par l'émetteur RF (113) et à restaurer le signal électrique à partir du signal RF.
PCT/CN2016/109548 2016-12-12 2016-12-12 Système portable de rétroaction haptique ultrasonore WO2018107344A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2016/109548 WO2018107344A1 (fr) 2016-12-12 2016-12-12 Système portable de rétroaction haptique ultrasonore
CN201680091487.6A CN110226151A (zh) 2016-12-12 2016-12-12 可穿戴超声触觉反馈系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/109548 WO2018107344A1 (fr) 2016-12-12 2016-12-12 Système portable de rétroaction haptique ultrasonore

Publications (1)

Publication Number Publication Date
WO2018107344A1 true WO2018107344A1 (fr) 2018-06-21

Family

ID=62557782

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/109548 WO2018107344A1 (fr) 2016-12-12 2016-12-12 Système portable de rétroaction haptique ultrasonore

Country Status (2)

Country Link
CN (1) CN110226151A (fr)
WO (1) WO2018107344A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022108224A1 (de) 2022-04-06 2023-10-12 Hochschule Anhalt, Körperschaft des öffentlichen Rechts Verfahren, computerprogramm und vorrichtung zum vermitteln von umgebungsinformationen an einen nutzer, sowie nutzergerät

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101583992A (zh) * 2006-12-07 2009-11-18 塞尔-克姆有限责任公司 触觉型可穿着游戏装置
CN202637748U (zh) * 2012-05-07 2013-01-02 中国科学院声学研究所 一种聚焦装置
WO2016007920A1 (fr) * 2014-07-11 2016-01-14 New York University Système de rétroaction tactile en trois dimensions
CN105426024A (zh) * 2015-11-25 2016-03-23 吉林大学 一种基于超声波聚焦的触觉反馈系统及方法
US20170102771A1 (en) * 2016-12-12 2017-04-13 Leibs Technology Limited Wearable ultrasonic haptic feedback system
CN206388133U (zh) * 2016-11-22 2017-08-08 深圳市丹砂科技有限公司 可穿戴超声触觉反馈系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5719561A (en) * 1995-10-25 1998-02-17 Gilbert R. Gonzales Tactile communication device and method
US8570274B1 (en) * 2005-11-29 2013-10-29 Navisense Navigation device providing sensory feedback
CN103135111B (zh) * 2011-12-01 2015-04-08 曾奕 超声探测装置及其中超声波的收发驱动方法
CN104866098B (zh) * 2015-05-22 2018-10-09 中国科学院半导体研究所 一种超声波触觉反馈系统及其制造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101583992A (zh) * 2006-12-07 2009-11-18 塞尔-克姆有限责任公司 触觉型可穿着游戏装置
CN202637748U (zh) * 2012-05-07 2013-01-02 中国科学院声学研究所 一种聚焦装置
WO2016007920A1 (fr) * 2014-07-11 2016-01-14 New York University Système de rétroaction tactile en trois dimensions
CN105426024A (zh) * 2015-11-25 2016-03-23 吉林大学 一种基于超声波聚焦的触觉反馈系统及方法
CN206388133U (zh) * 2016-11-22 2017-08-08 深圳市丹砂科技有限公司 可穿戴超声触觉反馈系统
US20170102771A1 (en) * 2016-12-12 2017-04-13 Leibs Technology Limited Wearable ultrasonic haptic feedback system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022108224A1 (de) 2022-04-06 2023-10-12 Hochschule Anhalt, Körperschaft des öffentlichen Rechts Verfahren, computerprogramm und vorrichtung zum vermitteln von umgebungsinformationen an einen nutzer, sowie nutzergerät

Also Published As

Publication number Publication date
CN110226151A (zh) 2019-09-10

Similar Documents

Publication Publication Date Title
US20170102771A1 (en) Wearable ultrasonic haptic feedback system
US6717073B2 (en) Wireless display systems, styli, and associated methods
US20160231854A1 (en) Orthogonal frequency division scanning method for sensors
US20210117022A1 (en) Ultrasonic touch device and method, display device
US8413053B2 (en) Video reproducing apparatus and video reproducing method
DE112017003328T5 (de) Berührungsempfindliche Tastatur
CN108055870A (zh) 半无源触控笔
Nguyen et al. HandSense: capacitive coupling-based dynamic, micro finger gesture recognition
US8570274B1 (en) Navigation device providing sensory feedback
CN109952554B (zh) 有源触控笔速度校正
CN104007844A (zh) 电子设备和用于电子设备的可穿戴式输入装置
US20180024667A1 (en) Hover-sensitive touchpad
EP2662757A2 (fr) Dispositif d'indication de coordonnées et dispositif de mesure de coordonnées permettant de mesurer la position d'entrée du dispositif d'indication de coordonnées
US20190187810A1 (en) Active stylus apparatus and method
US20230309952A1 (en) Fetal ultrasound monitoring method and system
US20250126574A1 (en) Enhanced radio wave exposure mitigation using a combination of proximity & inertial sensor data
US20080170470A1 (en) Extended-range ultrasonic distance measuring apparatus and methods of using the same
JP2014032191A (ja) 姿勢の識別方法及び装置
JPH01158375A (ja) 超音波を用いて任意の表面上の物体の位置と状態を決定する方法と装置
WO2018107344A1 (fr) Système portable de rétroaction haptique ultrasonore
JP5763464B2 (ja) 位置特定装置及び車両
US20100004063A1 (en) Distance, orientation and velocity sensitive controller
CN102319087A (zh) 触摸屏超声诊断仪及其脉冲波多普勒模式调节方法
TW201239724A (en) Touch control apparatus, control method thereof and electronic device having touch control apparatus
CA1143796A (fr) Systeme de telemetrie a diaphonie reduite et methode de fabrication

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16924158

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 02.10.2019)

122 Ep: pct application non-entry in european phase

Ref document number: 16924158

Country of ref document: EP

Kind code of ref document: A1