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Including surface acoustic detection

Subclass of:

345 - Computer graphics processing and selective visual display systems

345156000 - DISPLAY PERIPHERAL INTERFACE INPUT DEVICE

345173000 - Touch panel

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
345177000 Including surface acoustic detection 87
20090195518METHOD AND APPARATUS FOR DETECTING LIFT OFF ON A TOUCHSCREEN - A composite touchscreen incorporates acoustic pulse recognition sensing and capacitive sensing technology. The hybrid screen incorporates the advantages of each technology while minimizing the drawbacks. When such a screen is incorporated in a gaming device specialized gestures and functions can be implemented that enhance the interface, the range of games, and the gaming experience.08-06-2009
20090195517METHOD FOR DETERMINING THE LOCATIONS OF AT LEAST TWO IMPACTS - A method for determining the locations of at least two impacts F08-06-2009
20080259054IMAGE PROCESSING APPARATUS - An image processing apparatus includes a thumbnail display control unit, a process display control unit, and a changing unit. The thumbnail display control unit controls a thumbnail image representing a content of the image data to display on the touch panel. The process display control unit controls process-indicating images corresponding to a plurality of candidate processes to be performed on the image data to display on the touch panel together with the thumbnail image. The changing unit changes a designated thumbnail image to a processed thumbnail image that represents a result of the designated process performed on the image data corresponding to the designated thumbnail image designated while maintaining to display the thumbnail image other than the designated thumbnail image designated each time the process designating unit designates the process.10-23-2008
20110193824Systems And Methods For Haptic Feedback Using Laterally Driven Piezoelectric Actuators - Systems and methods for haptic feedback using laterally driven piezoelectric actuators are disclosed. For example, one described apparatus for haptic feedback using laterally driven piezoelectric actuators includes: a base; a touch-sensitive interface comprising an interface surface, the touch-sensitive interface affixed to the base and configured to move in a direction lateral to the interface surface; and a piezoelectric actuator mounted to the base and to the touch-sensitive interface and configured to receive a haptic signal and output a force in a direction lateral to the interface surface.08-11-2011
20090122028Method For Determining The Location Of Impacts By Acoustic Imaging - A method for determining the location of an impact on a surface (05-14-2009
20100117993ACOUSTIC CONDITION SENSOR EMPLOYING A PLURALITY 0F MUTUALLY NON-ORTHOGONAL WAVES - A touch input system, comprising a surface, adapted to receive at least one simultaneous touch inputs from human fingers; a sensor adapted to detect the at least one touch inputs and produce at least one signal representing a unique position for the at least one touch input; and a processor, adapted to receive the at least one signal and produce an output representing a touch detection and a mapping of a coordinate position on the surface for each of the simultaneous touch inputs. The system may detect, for example, two touch inputs simultaneously. The surface may be non-planar and distinct from a small solid angle section of a sphere.05-13-2010
20100073329Quick Gesture Input - A computer-implemented user interface method for a computing device is disclosed. The method includes associating each of a plurality of telephone keys with a direction of each key relative to a center of a telephone keypad, receiving a contact from a user of the device at a location on a touchscreen display of a computing device and an input at a direction relative to the location of the user contact, and causing a telephone number to be entered on the computing device based on the direction of each key relative to the center of the telephone keypad corresponding to the direction relative to the location of the user contact.03-25-2010
20090009488Method and system for detecting touch events based on redundant validation - A method of detecting a touch event on an acoustic fingerprint based touch system comprises digitizing at least two signals to form first and second sets of digitized signals. The at least two signals are received from at least two sensors on a touch panel. A frequency transform is performed upon the first and second sets of digitized signals to form first and second frequency transform data sets of frequency components. At least first and second live fingerprints are constructed wherein at least one of the first and second live fingerprints is based on the first and second frequency transform data sets. A touch location is identified based on the at least first and second live fingerprints.01-08-2009
20130027359NOISE REDUCTION IN ELECTRONIC DEVICE WITH TOUCH SENSITIVE SURFACE - The invention relates to an electronic device with a touch sensitive surface comprising: a sensing means for capturing an acoustic signal, a touch location determining unit configured to determine the location of a touch event on the touch sensitive surface based on the acoustic signal. To improve the reliability of the touch localisation process, the device further comprises a filtering unit configured to improve the signal-to-noise ratio of the acoustic signal based on one or more signals provided by one or more spurious acoustic signal generating devices of the electronic device and/or based on one or more parameters of the one or more spurious acoustic signal generating devices of the electronic device. The invention also relates to a corresponding method. The invention furthermore relates to a method for improving the confidentiality of a user input.01-31-2013
20080238886METHOD FOR PROVIDING TACTILE FEEDBACK FOR TOUCH-BASED INPUT DEVICE - A system detects when a user's finger is near a key on a touch screen. When the user's finger is near the key, the touch screen may begin to vibrate. The vibrations may increase in frequency and/or intensity as the user's finger approaches the key. The vibrations may decrease in frequency and/or intensity as the user's finger moves away from the key.10-02-2008
20080284755Touch Pad - A touch pad (11-20-2008
20120182269Acoustic Touch Sensor - A touch sensor comprises a substrate capable of propagating acoustic waves and includes a first surface having a touch sensitive region. A first sidewall intersects the first surface along a first edge. The first edge is configured to propagate a first acoustic wave along the first edge. The first acoustic wave may be a one-dimensional edge wave. A wave converter converts the first acoustic wave to a second acoustic wave, and the first surface is configured to propagate the second acoustic wave across the touch sensitive region.07-19-2012
20130069916METHOD FOR DETECTING A SUSTAINED CONTACT AND CORRESPONDING DEVICE - The invention relates to a method for determining the location and duration of a sustained contact of a touch event performed by a user on a surface of an object comprising the steps of: a) determining the location of the touch event, in particular based on an acoustic signal generated by the impact of the touch on the surface, and b) determining the duration of the touch event based on a perturbation of a signal generated in or on the object by a transducer characterized in that step b) comprises analyzing the signal generated at or close to N natural frequencies of the object, with N being one or more. The analysis close to the natural frequencies allows the reliable determination of not only the location of a touch event but also whether the user continues to interact with the surface of the object which is due to the important damping of the generated signal in the presence of the touch. The invention also relates to a touch sensitive device configured to carry out the method.03-21-2013
20110037734ELECTRONIC DEVICE HOUSING AS ACOUSTIC INPUT DEVICE - There are provided systems, devices and methods for related to an electronic device housing having input functionality. Specifically, in one embodiment, the electronic device includes a housing and one or more acoustic transducers positioned within the housing each operative to generate an electrical signal in response to detecting a sound resulting from an impact with the housing. Additionally, the electronic device includes a microprocessor coupled to the one or more acoustic transducers and configured to receive the electrical signals generated by the one or more acoustic transducers. The microprocessor operative to interpret the generated electrical signals as input to the electronic device.02-17-2011
20090267920SYSTEM AND METHOD FOR GENERATING A FEEDBACK SIGNAL IN RESPONSE TO AN INPUT SIGNAL PROVIDED TO AN ELECTRONIC DEVICE - The disclosure relates to a system for providing feedback signals to input signals provided to an electronic device is provided. The system comprises: a display; an input device; an input module to detect activation of the input device; and a input module to generate a feedback signal for the electronic device based on signals from the input module. In system, the input device is a transducer. The transducer may be a piezoelectric element and the input module may cause the transducer to vibrate upon receiving an activation signal from the input module.10-29-2009
20120032928METHODS AND DEVICES FOR DETERMINING USER INPUT LOCATION USING ACOUSTIC SENSING ELEMENTS - Methods and devices are provided for determining location of an input on a surface of a device using an acoustic sensing element. An exemplary method begins by determining an anticipated acoustic response resulting from an output generated by a component of the device at the acoustic sensing element. The method continues by subtracting the anticipated acoustic response from a measured acoustic response at the acoustic sensing element to obtain a nominal acoustic response, and determining the location of the input based on the nominal acoustic response.02-09-2012
20090079709SENSING DEVICE OF SURFACE ACOUSTIC WAVE TOUCH PANEL - Described is a sensing device of a surface acoustic wave (SAW) touch panel having a new reflector columns and rows arrangement. As compared to the conventional design in the art where each of the reflector columns and rows are arranged from thinness to thickness, each of the arrangements of the reflector columns and rows herein is composed of a plurality of uniformly disposed reflectors having several sub-reflectors isolated with a gap or gaps. In this manner, a vibration wave transmitted through each of the reflector columns or rows can be reflected and then collected at a target transducer in an uniform pattern with respect to each portion of each of the reflecting columns and rows, thereby avoiding the problem encountered in the prior art.03-26-2009
20120007836TOUCH SCREEN UNLOCKING DEVICE AND METHOD - A touch screen unlocking device for an electronic device equipped with a touch screen. The touch screen unlocking device includes a sensor, a processing unit, a screen control unit, a measuring unit, and a timing unit. The sensor is configured for detecting a signals generated by a tap on the touch screen. The screen control unit is configured to transmit a tap signal to the processing unit when detecting the touch screen is tapped. The measuring unit is configured to measure the frequency of the signals, and transmit a frequency-affirming signal to the processing unit when the frequency drops within a predetermined frequency range. The timing unit is configured to transmit a time-affirming signal to the processing unit when the interval between two consecutive taps drops within a predetermined time span.01-12-2012
20110298758Display Device Having Vibration Function and Vibration Type Touch-Sensing Panel - A vibration type touch-sensing panel includes a substrate, a plurality of vibration units, and a control module, wherein the vibration units are disposed on the substrate to form a matrix. Each one of the vibration units includes a first electrode layer, a second electrode layer, and an electret layer, wherein the first electrode layer is disposed on the substrate. The electret layer is disposed between the first electrode layer and the second electrode layer and located on one of the first electrode layer and the second electrode layer. The control module provides a driving voltage between the first electrode layer and the second electrode layer so that the electret layer and one of the first electrode layer and the second electrode layer generate a relative vibration.12-08-2011
20110291996MULTI-LAYER COVERSHEET FOR SAW TOUCH PANEL - A touch panel includes a surface acoustic wave propagating substrate having top and bottom surfaces and a multi-layer coversheet that is positioned over the substrate. The coversheet includes a load-spreading layer, a compliant layer and an anti-sticking layer. The load-spreading layer has top and bottom surfaces, and the top surface receives touch input from an object. The compliant layer has top and bottom surfaces and the top surface of the compliant layer is coupled to the bottom surface of the load-spreading layer. The anti-sticking layer has top and bottom surfaces and the top surface of the anti-sticking layer is coupled to the bottom surface of the compliant layer. The bottom surface of the anti-sticking layer is positioned proximate to the top surface of the substrate.12-01-2011
20100085332TOUCH PANEL DEVICE AND CONTACT POSITION DETECTION METHOD - A burst wave is applied to an excitation element of a touch panel main body from an oscillation section so as to excite surface acoustic waves, and the excited surface acoustic waves are received by a receiving element of the touch panel main body. The received signals are A/D converted by a receiving section, and a control section calculates the contact position and the contact width of the object in contact with the touch panel main body, based on time-series changes in the received strength. Based on the received strength of surface acoustic waves, the control section controls the wave number of the burst wave to be applied to the excitation element.04-08-2010
20110025648METHOD FOR CONTROLLING A TOUCH SURFACE CONTROL DEVICE AND ELECTRIC TOUCH SURFACE CONTROL DEVICE INCLUDING MEANS FOR IMPLEMENTING SAID METHOD - The invention relates to a method for controlling a touch surface control device, including at least one step comprising the generation of sensory feedback corresponding to the detection of a pressure applied by a user on the touch surface, said sensory feedback comprising haptic feedback and acoustic feedback. The invention is characterised in that the generation of the acoustic feedback is initiated after the generation of the haptic feedback once a characteristic value of the haptic feedback has exceeded a pre-defined threshold. The invention also relates to an electric control device having a touch surface, characterised in that it includes means for implementing said method (02-03-2011
20090273583CONTACT SENSITIVE DISPLAY - An assembly may include a touch screen. A first element may be provided to cause the touch screen to vibrate at a predetermined frequency. A first sensor proximate to a first portion of the touch screen may measure vibration in the first portion of the touch screen. A second sensor proximate to a second portion of the touch screen may measure vibration in the second portion of the touch screen. Position sensing logic may determine a position of a contact point on the touch screen based on the measured vibration in the first portion of the touch screen and the measured vibration in the second portion of the touch screen.11-05-2009
20090295758METHOD FOR WRITING MOTION AND TRAJECTORY RECOGNITION AND WRITING APPARATUS AND RECOGNIZING SYSTEM - The present invention provides a method for writing motion recognition, wherein a sound signal generated when a writing apparatus is contacting and moving on a writing surface is acquired. According to the occurrence of the sound signal, the writing apparatus can be determined whether it is on the writing surface or not. In another embodiment, the present invention further provides a method for writing trajectory recognition, wherein the foregoing method and character recognition techniques are combined to convert a writing trajectory into a character. In addition, the present invention further provides a writing apparatus and a recognition system, wherein a device is installed in the writing apparatus for collecting sound signal generated during the writing process and a processing unit which adapts the foregoing method is used to recognize the motion trajectory of the writing apparatus so as to form the corresponding character.12-03-2009
20090278817Touch-Screen Apparatus and Image-Capturing System Thereof - A touch-screen apparatus provides input commands from touch or moving action of single point touch, multi points touch by a user for implement of image capture. The touch-screen apparatus is coupled with a control interface of image capture via wire or wireless method, which provides the user another selection to operate the process of image capture.11-12-2009
20090295757Multi-mode ultrasonic system - In one embodiment, an apparatus comprises a switching mechanism to switch an input line between a first input voltage and a second input voltage, a pulse generator coupled to the switching mechanism to generate an electronic pulse train at a high frequency in response to the first input voltage and an electronic pulse train at a low frequency in response to the second input voltage, an oscillator circuit coupled to the pulse generator to receive the electronic pulse train, and an ultrasonic transmitter coupled to the oscillator circuit to produce an ultrasonic signal at a frequency that is a function of a frequency of the electronic pulse train.12-03-2009
20100201652EMBEDDED PIEZOELECTRIC ELEMENTS IN TOUCH PANELS - A system includes a touch panel, a touch panel controller and a voltage source. The touch sensitive touch panel is formed with one or more piezoelectric elements disposed in an interior of the touch panel. The touch panel controller identifies an occurrence of a touch upon the touch panel and generates one or more control signals based on the occurrence of the touch. The voltage source receives the one or more generated control signals, and applies voltages to at least one of the one or more piezoelectric elements based on the one or more control signals.08-12-2010
20110199342APPARATUS AND METHOD FOR PROVIDING ELEVATED, INDENTED OR TEXTURIZED SENSATIONS TO AN OBJECT NEAR A DISPLAY DEVICE OR INPUT DETECTION USING ULTRASOUND - An apparatus and method for providing elevated, indented, or texturized contactless sensations to an object at a distance from a display device using ultrasound or ultrasonic waves is disclosed. Processes are also given involving elevated, indented, or texturized sensations to an object near a display device using airborne ultrasound or ultrasonic waves. By providing elevated, indented, or texturized sensations to an object near a display device enhanced input/output functions are provided.08-18-2011
20100141607APPARATUS AND METHOD FOR RECOGNIZING MULTI TOUCH POINT - The present invention relates to an apparatus and method for recognizing multi touch points. When touch input units are touched at the same time by a plurality of touch units, a plurality of sensors sense vibration signals generated from each touch point and measures intersection points from distance information of signals combined according to an input sequence to recognize positions of each touch point. The present invention can accurately recognize the coordinates of the touch points using a simple structure that the sensors are disposed at the edges of the touch input devices and thus, achieves a rapid response. In addition, with the present invention, it can recognize the coordinates of the touch points without limiting the size of the touch panel and when the touch points are generated at the same time, can accurately and rapidly recognize all the plurality of touch points.06-10-2010
20110141066DISPLAY INPUT DEVICE - A display input device is comprised of a touch panel 06-16-2011
20100013799TOUCH INPUT DETECTING DISPLAY FILTER AND DISPLAY DEVICE HAVING THE SAME - A touch input detecting display filter includes a layered body and a vibration detector. The layered body includes a base substrate disposed in front of a display panel, and an optical filter part having an anti-reflecting film layered on the base substrate. The vibration detector is disposed on the layered body. When an object gets in touch with the layered body, the vibration detector detects vibration generated from a touch location of the layered body.01-21-2010
20120194483PORTABLE ELECTRONIC DEVICE AND METHOD THEREFOR - An electronic device includes a touch-sensitive display, and a plurality of piezoelectric patch transducers disposed beneath the display. A controller is configured to switch each of the transducers between a tactile feedback mode to provide tactile feedback via the touch-sensitive display, and an object detection mode to provide acoustic detection of a contactless position of an object relative to the device. The object is free of contact with the device at the contactless object position. Using the same transducers to provide tactile feedback and object detection provides these features without additional costs associated with adding further components. A microphone of the device can receive ultrasonic signals, emitted from the transducers and via associated acoustic ports, and the device can process the received signals to determine a contactless three-dimensional gesture that is performed, for example above the display.08-02-2012
20100253652INFORMATION PROCESSING APPARATUS, NOTIFICATION METHOD, AND PROGRAM - An information processing apparatus is disclosed which includes: an operation display device displaying a plurality of virtual operation keys on a display screen in a predetermined key layout so as to detect operations performed by a user on the display screen; a vibration detection device detecting vibration changes of the operation display device; a key operation determination device determining whether a key input operation is performed on each of the virtual operation keys based on results of the detection by the operation display device and on results of the detection by the vibration detection device; and a notification control device giving notification selectively to the user based on those results of the determination by the key operation determination device.10-07-2010
20100302211Touch Screen Detecting Method and Apparatus - Techniques for detecting one or more touches on a touch screen are disclosed. According to one aspect of the present invention, at least three predetermined points are provided, where each of the at least three predetermined points has a wave receptor mounted thereat. When a touch to the touch screen happens, acoustic wave signals generated at the touch point are received by the wave receptors. The distances between the touch point and the three predetermined points are calculated according to the acoustic wave signals. At least three equations of circles are constructed to respectively employ the three predetermined points as their centers, the distances between the touch point and the at least three predetermined points as their radiuses. The coordinates of the touch point according to a common solution of the at least three equations are then determined. The same approach can be similarly applied to determining multiple touches on a touch screen.12-02-2010
20110025649METHOD AND APPARATUS FOR DETECTING HOLD CONDITION ON AN ACOUSTIC TOUCH SURFACE - A bending wave touch system includes at least one sensor and a touchscreen controller. The at least one sensor is coupled to a substrate and is responsive to vibrations in the substrate. The at least one sensor outputs signals. The controller receives the signals from the at least one sensor and identifies touch coordinates based on high frequency components of the signals when a touch on the substrate includes at least one of a tap, a drag and a lift-off. The controller identifies a status of a hold condition of the touch based on at least two different time averages of low frequency components of the signals.02-03-2011
20110043491DATA INPUT DEVICE AND DATA INPUT METHOD - There is provided a data input device and a data input method. The data input device including: a sense unit provided by forming a predetermined sense region at a side of a case of an electronic apparatus terminal, for generating a first direction input signal by sensing a horizontal pressure in a predetermined radial direction of the finger put on a reference position within the sense region, and for generating a second direction input signal by sensing a vertical pressure leaned in a predetermined direction while the finger is put on the reference position; and a controller for determining a horizontal pressure direction or a vertical pressure position of the finger from the first direction input signal and the second direction input signal, and for extracting data assigned to a corresponding radial direction and a pressure position to input.02-24-2011
20110084940MOBILE DEVICE AND METHOD FOR PROCESSING AN ACOUSTIC SIGNAL - A mobile device and method for processing an acoustic signal are provided. The mobile device may calculate a position of an inputted touch and recognize a character from the calculated position. The mobile device may perform a function corresponding to the recognized character, or display the position of the touch.04-14-2011
20110084941SENSING DEVICE OF SURFACE ACOUSTIC WAVE TOUCH PANEL - Described is a sensing device of a surface acoustic wave (SAW) touch panel having a new reflector columns and rows arrangement. As compared to the conventional design in the art where each of the reflector columns and rows are arranged from thinness to thickness, each of the arrangements of the reflector columns and rows herein is composed of a plurality of uniformly disposed reflectors having several sub-reflectors isolated with a gap or gaps.04-14-2011
20120120031Method For Determining The Locations Of One Or More Impacts Or Touches On A Surface Of An Object Including Two Or More Transducers - The invention relates to a method for determining the locations of one or more impacts or touches on a surface of an object including two or more transducers which improves the precision of localisation even for low signal to noise ratios and furthermore provides the possibility to identify multi touch or multi impact situations. To achieve these objects the method comprises the steps of: a) receiving a signal, in particular an acoustic signal, from each one of the transducers, wherein the signals correspond to at least one impact at least one location on the surface; b) determining a representative value based on the signals received in step a) and predetermined properties, in particular acoustic properties, of the object at a given location on the surface of the object; and c) deciding whether the at least one impact at the at least one location on the surface of step a) corresponds to the given location on the surface based on a comparison of the representative value and the corresponding value of the at least two signals.05-17-2012
20120313900USER INTERFACES - A first electronic device is operated in the presence of a second electronic device. Both are configured to transmit acoustic signals, the first being configured to transmit signals with a first characteristic. The first device determines the presence of the second device and thereafter transmits acoustic signals having a second, signal characteristic, different from the first characteristic, and giving a reduced interference between signals transmitted from the first and second devices respectively than the first signal characteristic. Acoustic signals comprising reflections of the transmitted signals from an object are received at the first device, and are used to characterise the motion of the object and thereby control a function of the first device.12-13-2012
20110134083COMMAND INPUT DEVICE, MOBILE INFORMATION DEVICE, AND COMMAND INPUT METHOD - Provided are a command input device, a mobile information device, and a command input method which can easily be operated by a user even when the input unit in the device is small. A first and a second detection modules arranged on a device which is brought into contact with a user body detect vibration caused by a tapping operation on the user body and transmitted via the user body. The position of the tapping operation on the user body is identified according to analysis data obtained by analyzing the vibration relations detected by the first and the second detection modules such as a known correspondence between a time difference between the detection timings and the position of the tapping operation on the user body. Since the user body can be used as a space for inputting a command, it is possible to secure a sufficient input space.06-09-2011
20110134082INFORMATION INPUT SYSTEM, METHOD FOR INPUTTING INFORMATION AND INFORMATION INPUT PROGRAM - Provided is an information input system, wherein an operator can easily conduct information input actions to a small information device. The information input system is provided with a vibration element that applies a vibration to a forefinger of an operator, a vibration sensor that measures the vibration transmitted through the forefinger and the thumb, and a first input information specifying module that specifies the position on the thumb where another finger of the operator is in contact with the thumb based on a change in transmission property of the transmission system caused by the fact that the finger of the operator, which is in contact with the thumb, is in contact with the vibration transmission system formed by including the forefinger and the thumb. The information input system outputs the detected position of the contact of the finger as positional information.06-09-2011
20120206417INFORMATION INPUTTING DEVICE AND INFORMATION INPUTTING METHOD - Provided are an information inputting device and an information inputting method capable of inputting information to a portable electronic apparatus by using a touch panel and an electronic pen. In the information inputting device and the information inputting method, the portable electronic apparatus including a touch panel is combined with a receiver which receives an ultrasonic wave signal and a reference signal, so that it is possible to input information by using the touch panel and to accurately input information by using the electronic pen which emits the ultrasonic wave signal.08-16-2012
20110261021TRANSPARENT COMPOSITE PIEZOELECTRIC COMBINED TOUCH SENSOR AND HAPTIC ACTUATOR - A haptic device includes a substantially transparent composite piezoelectric cell configured to measure a deformation of a surface of the cell and to provide a haptic feedback effect as a result of the deformation.10-27-2011
20110080376TOUCH DISPLAY PANEL AND DISPLAY APPARATUS - A touch display panel including a first substrate, a touch sensing device, and a display medium layer is provided. The first substrate has a display area and a non-display area located outside the display area. The touch sensing device may be directly disposed on the first substrate and located within the non-display area, wherein the touch sensing device is consisted of two or more groups of receiving elements. The display medium layer is disposed in the display area.04-07-2011
20120306823AUDIO SENSORS - One embodiment may take the form of an audio detection system having a display assembly. The display assembly may include a screen and at least one electromagnetic energy emitter configured to direct energy at an inside surface of the screen. At least one sensor is configured to sense the emitted energy after it is reflected from the inside surface of the screen and generate electrical signals corresponding the sensed reflected energy. A processor coupled to the at least one sensor generates an audio signal representative of sound waves that impact an outer surface of the screen.12-06-2012
20110096038METHOD AND DEVICE FOR CONVERTING SENSING INFORMATION - A surface acoustic wave (SAW) touch panel with improved touching precision is provided. By forming a matte surface that diffuses a back wave generated by the edge of the SAW touch panel due to discontinuity, the touching precision of the SAW touch panel is improved.04-28-2011
20110096037METHOD FOR DETERMINING THE POSITION OF A CONTACT ON A TOUCH PANEL AND CORRESPONDING SYSTEM - A method for determining the position of a contact on a panel envisages, during a detection operation, detecting vibration signals at a plurality of detection areas fixed with respect to the panel as a function of vibrations generated by the contact; determining detection values of temporal differences between times of detection of the vibrations at pairs of said detection areas; and determining the position of the contact as a function of said temporal differences. A characterization operation, preceding that of detection, envisages defining contact areas (key04-28-2011
20110096036METHOD AND DEVICE FOR AN ACOUSTIC SENSOR SWITCH - An acoustical sensor can include a fabricated surface that produces an acoustical sound signature responsive to a finger tapping on the fabricated surface, and a microphone within proximity of the fabricated surface to analyze and associate the acoustical sound signature with a user interface control for operating a mobile device or earpiece, for example, to adjust a volume, media selection, or user interface control. The microphone can include an ultra-low analog circuit to set a capacitance and establish a frequency response, the analog circuit programmable to identify a direction of a directional touch or localized touch on the fabricated surface. The analog circuit by way of a floating gate can control a real delay between a front and back diaphragm to control microphone directivity. Other embodiments are disclosed.04-28-2011
20100026667ACOUSTIC MULTI-TOUCH SENSOR PANEL - Sensing of multiple touches on a surface of a material is provided. A beamed acoustic wave traveling in a substantially linear path along the surface of the material is formed by a plurality of transducers, e.g., a phased array, coupled to the surface. One or more echoes of the acoustic wave caused by a corresponding one or more touches on the path are detected with a detector. The detector may include, for example, one or more of the transducers in the plurality of transducers. The surface can be scanned with a plurality of beamed acoustic waves using a variety of configurations, such as parallel beams, radially emanating beams, etc.02-04-2010
20120001875TOUCHLESS SENSING AND GESTURE RECOGNITION USING CONTINUOUS WAVE ULTRASOUND SIGNALS - The embodiments provide systems and methods for touchless sensing and gesture recognition using continuous wave sound signals. Continuous wave sound, such as ultrasound, emitted by a transmitter may reflect from an object, and be received by one or more sound receivers. Sound signals may be temporally encoded. Received sound signals may be processed to determine a channel impulse response or calculate time of flight. Determined channel impulse responses may be processed to extract recognizable features or angles. Extracted features may be compared to a database of features to identify a user input gesture associated with the matched feature. Angles of channel impulse response curves may be associated with an input gesture. Time of flight values from each receiver may be used to determine coordinates of the reflecting object. Embodiments may be implemented as part of a graphical user interface. Embodiments may be used to determine a location of an emitter.01-05-2012
20120062519Pre-assembled part with an associated surface convertible to a transcription apparatus - An apparatus for operation with or in a projector or a flat panel display, the apparatus including a part board having an associated surface or a frame for a surface, such as a whiteboard, that is pre-assembled to include components that when connected to an external module convert the surface to an electronic transcription apparatus. In one version, the components include a set of sensors and electronics therefor, with wiring and a connector.03-15-2012
20090267921PROGRAMMABLE TACTILE TOUCH SCREEN DISPLAYS AND MAN-MACHINE INTERFACES FOR IMPROVED VEHICLE INSTRUMENTATION AND TELEMATICS - Disclosed are new methods and apparatus particularly suited for applications in a vehicle, to provide a wide range of information, and the safe input of data to a computer controlling the vehicle subsystems or “Telematic” communication using for example GM's “ONSTAR” or cellular based data sources. Preferred embodiments utilize new programmable forms of tactile touch screens and displays employing tactile physical selection or adjustment means which utilize direct optical data input. A revolutionary form of dashboard or instrument panel results which is stylistically attractive, lower in cost, customizable by the user, programmable in both the tactile and visual sense, and with the potential of enhancing interior safety and vehicle operation. Non-automotive applications of the invention are also disclosed, for example means for general computer input using touch screens and home automation systems.10-29-2009
20120007837Acoustic Touch Sensor - A touch sensor comprises a substrate capable of propagating acoustic waves and includes a first surface having a touch sensitive region. A first sidewall intersects the first surface along a first edge. The first edge is configured to propagate a first acoustic wave along the first edge. The first acoustic wave may be a one-dimensional edge wave. A wave converter converts the first acoustic wave to a second acoustic wave, and the first surface is configured to propagate the second acoustic wave across the touch sensitive region.01-12-2012
20120026135METHODS AND DEVICES FOR DETERMINING USER INPUT LOCATION BASED ON DEVICE SUPPORT CONFIGURATION - Methods and devices are provided for determining location of an input on a surface of a device using a plurality of acoustic sensing elements. An exemplary method comprises determining a current support configuration of the device, selecting a device acoustic signature corresponding to the current support configuration, measuring acoustic response corresponding to the input at each acoustic sensing element of the plurality of acoustic sensing elements, and determining the location of the input based on the measured acoustic responses and the selected device acoustic signature for the current support configuration.02-02-2012
20120162143MOUNT STRUCTURE OF TOUCH PANEL WITH VIBRATION FUNCTION - [Object] It is an object to provide a mount structure of a touch panel with a vibration function which is superior in impact resistance, dust-proofness, and drip-proofness, and can effectively transmit a vibration of a vibration element.06-28-2012
20120249487METHOD OF IDENTIFYING A MULTI-TOUCH SHIFTING GESTURE AND DEVICE USING THE SAME - A method of identifying a shifting gesture comprises detecting one or more induction signals induced by one or more pointing objects that come into contact with a touch-sensitive surface, determining the number of the pointing objects that come into contact with the touch-sensitive surface, recording moving status and coordinates of each pointing object in an instance in which the number of the pointing objects is larger than a preset number, determining whether one pointing object moves in a direction parallel to the direction that another pointing object moves in according to the recorded moving status and the coordinates of the pointing objects and generating control signals to execute a gesture associated with the determined result.10-04-2012
20100123685TACTILE PRESENTATION TOUCH SCREEN AND DISPLAY DEVICE HAVING THE SAME - A tactile presentation touch screen and a display device having the same is disclosed. The tactile presentation touch screen in accordance with an embodiment of the present invention includes a transparent piezoelectric body, a plurality of transparent electrodes, which are coupled to the transparent piezoelectric body such that the transparent piezoelectric body is divided into grids, and a touch screen unit, which is coupled to one surface of the transparent piezoelectric body. Thus, the tactility of the touch screen can be improved by deforming the transparent piezoelectric body corresponding to an area pressed by the user.05-20-2010
20120081337Active Acoustic Multi-Touch and Swipe Detection for Electronic Devices - An electronic device has a display, a controller, and a pair of haptic transducers connected to the display. The controller configures the haptic transducers to momentarily vibrate the display. A pair of sensors disposed on the display detects variations caused by the user touch in the vibrations. Based on an analysis of these variations, the controller can determine whether a user performed at least one of a swipe action and a multi-touch action, across the display.04-05-2012
20120229424Apparatus - An apparatus comprising a first part configured to form at least part of the case of the apparatus, a second part configured to form at least part of the display for the apparatus, and a flexible membrane attached at a first area of contact to the first part and at a second area of contact to the second part and furthermore configured to connect the first part to second part.09-13-2012
20100328271METHOD AND APPARATUS FOR GENERATING DRIVER SIGNALS OF SAW TOUCH PANEL - The present invention relates to a method and apparatus for generating driver signals of SAW touch panel. The method includes the steps of: sending a trigger signal continuously by referring to an input signal, wherein the trigger signal is sent when the input signal is within a predetermined range; generating a surface acoustic wave according to the trigger signal; transmitting the surface acoustic wave to at least one transducer via a touch surface; and detecting the input signal via at least one transducer. Moreover, the input signal is kept on a predetermined level when the surface acoustic wave has not been received by the transducer and when a noise signal from circuits outside the transducer has not been added in the input signal. The predetermined level is within the predetermined range. The sensing accuracy of the SAW touch panel can be enhanced because the noise signal has less effect on the driver signals.12-30-2010
20100220078DIGITAL PEN SYSTEM, TRANSMITTER DEVICES, RECEIVING DEVICES, AND METHODS OF MANUFACTURING AND USING THE SAME09-02-2010
20080231612TOUCH SENSITIVE DEVICE EMPLOYING BENDING WAVE VIBRATION SENSING AND EXCITATION TRANSDUCERS - A touch sensitive apparatus includes a touch plate to which several pickup sensors and at least one excitation transducer are coupled. Each of the sensors is configured to sense bending waves in the touch plate, and the excitation transducer is configured to induce bending waves in the touch plate. The apparatus may further include active buffer circuits, wherein each of the active buffer circuits is coupled to one of the sensors. A controller is coupled to the sensors via the active buffer circuits and to the excitation transducer via a non-actively buffered connection. The controller is configured to compute a location of a contact on the touch plate responsive to sense signals received from the sensors. The apparatus may be used to perform a variety of calibrations, including touch plate and sensor calibrations. Changes in touch sensing apparatus calibration and performance may be detected and tracked over time.09-25-2008
20130169599SURFACE ACOUSTIC WAVE TOUCH PANEL AND MANUFACTURING METHOD THEREOF - A surface acoustic wave touch panel includes a flexible substrate, an acoustic wave transmitting layer, an adhering layer, a piezoelectricity layer, and an electrode layer. The acoustic wave transmitting layer is made of nano-diamond and formed on the flexible substrate. The adhering layer is formed on the acoustic wave transmitting layer. The piezoelectricity layer is formed on the acoustic wave transmitting layer in an interdigitated electrode pattern. The electrode layer is formed on the piezoelectricity layer. A method of manufacturing the surface acoustic wave touch panel is also provided.07-04-2013
20130120322Radial Transducer for Acoustic Wave Touch Sensor - Radial transducers are provided for acoustic touch sensors. Different radial transducer arrangements may allow for locating multiple simultaneous touches without ambiguity, in some embodiments without a bezel. Instead of transmitting acoustic waves along a line to be reflected at multiple points, surface acoustic waves are transmitted in a radial wave pattern. Surface acoustic waves are transmitted along different angles spread out over at least part of the touch region. Various techniques may be used to generate the radial wave pattern, such as a convex wedge of a wedge transducer, interference patterns, a curved piezoelectric element, a curved reflector, a curved edge of the substrate, a curved grating, or one or more lenses. These devices for controlling the spread of the surface acoustic waves may alternatively be used for control of the surface acoustic rays for transmission along a single line or just along two lines (e.g., X and Y axes).05-16-2013
20130093730Acoustic Touch Apparatus - An improved acoustic touch apparatus that has a logo or application icon applied on the back surface of a propagating substrate which can be viewed through the substrate and an acoustic element situated adjacent the logo or application icon that can compensate for phase velocity shifts of surface acoustic waves in propagating over the logo or application icon.04-18-2013
20130113760TECHNIQUES FOR PROVIDING LOCALIZED TACTILE FEEDBACK TO A USER VIA AN ELECTRO-ACOUSTIC TOUCH DISPLAY OF A USER DEVICE - A user device is presented. The user device includes an interactive substrate configured to receive touch input from a user of the user device. The user device also includes a plurality of acoustic transducers, each of the plurality of acoustic transducers being configured to generate an acoustic wave along the interactive substrate in response to a control signal. The user device also includes a first circuit configured to sense a position of the touch input from the user with respect to the interactive substrate. The user device further includes a second circuit configured to generate the control signal for each of the plurality of acoustic transducers to generate a desired vibration at the position of the touch input.05-09-2013
20130135261TOUCH PAD - A touch pad includes transducers for receiving acoustic signals resulting from touch events, such as the continuous movement of a fingertip across the surface of the touch pad. The acoustic signals are acquired at different transducer locations in the surface. Signals from different transducers are combined, preferably in antiphase, to improve signal characteristics. The transducer signals are supplied to a stereo analogue to digital converter. Phase differences are obtained and compared with phase difference profiles of known location, in order to identify the location of the touch event. An index is used to identify candidate locations to reduce the amount of processing. Interpolation is used to locate the touch event between profile locations.05-30-2013
20130141396VIRTUAL KEYBOARD INTERACTION USING TOUCH INPUT FORCE - Providing a virtual keyboard interaction is disclosed. An indicator identifying a force intensity of a touch input provided on a touch input surface is received. It is determined that the touch input is associated with a virtual keyboard. A virtual keyboard interaction is provided based at least in part on the indicator identifying the force intensity of the touch input.06-06-2013
20080198145ACOUSTIC WAVE TOUCH ACTUATED SYSTEM - A touch pad assembly includes a substrate and a plurality of acoustic wave switches positioned with respect to the substrate. Each of the plurality of acoustic wave switches includes a touch surface connected to an acoustic wave cavity and a transducer secured to the acoustic wave cavity. The plurality of acoustic wave switches are positioned to provide detection of sliding motion direction and rate between the plurality of acoustic wave switches.08-21-2008
20110273405TOUCH SCREEN DEVICE - Disclosed herein is a touch screen device, including: a case that partitions an internal space, a touch panel module that is received in the case to recognize external pressure, a first actuator that is mounted at the lower part of the touch panel module to generate vibration, a second actuator that is mounted at the case to generate vibration, and 11-10-2011
20110254812ACOUSTIC TOUCH SENSOR - A touch sensor comprises a substrate capable of propagating acoustic waves. The substrate includes a first surface having a touch sensitive region. A transducer is formed on the substrate. The transducer comprises a piezoelectric element which is thermally cured after being formed on the substrate. The transducer is configured for at least one of generating acoustic waves and detecting acoustic waves. Alternatively, the transducer may include a strip comprising the piezoelectric element.10-20-2011
20130147767Dispersion-Based Acoustic Touch Signal Detection and Reflector-Based Dispersion Mitigation - A method of detecting a touch event includes transmitting acoustic signals across a substrate, and receiving the acoustic signals. The received acoustic signals have a waveform profile with a dip indicative of a touch on the substrate. The method further includes determining a dispersion level of the dip from the waveform profile, and determining a location coordinate of the touch on the substrate based on the dispersion level.06-13-2013
20130147768Acoustic Touch Signal Dispersion Mitigation - A touch input system includes a substrate configured to support propagation of acoustic signals, a transducer in communication with the substrate and configured to transmit or receive the acoustic signals before or after the propagation, and an array of reflectors disposed on the substrate. Each reflector is oriented on an angle to redirect the acoustic signals along a path toward or away from the transducer. The transducer includes a stepped interface for the redirected acoustic signals. The stepped interface includes a set of interface elements distributed across a width of the acoustic signals and offset from one another along the path to compensate for the angle of the reflectors.06-13-2013
20130147769TOUCH SCREEN WITH ACOUSTIC MODE REFLECTIVE AND CONVERSION ARRAYS - A touch panel includes a first plurality of echelons arranged on a substrate along a first centerline at a first angle and a second plurality of echelons arranged on a substrate along a second centerline at a second angle. A first wave generator on an end of the substrate is configured to transmit a first wave along the first centerline of the first plurality of echelons and a second wave generator on an end of the substrate is configured to transmit a second wave along the second centerline of the second plurality of echelons. First and second trapping slots are positioned parallel to their respective plurality of echelons.06-13-2013
20130093732METHOD FOR DETECTING A TOUCH-AND-HOLD TOUCH EVENT AND CORRESPONDING DEVICE - Methods for determining a touch-and-hold touch event on a touch sensitive interaction surface of a touch sensing device are provided and comprise the steps of: a) determining a touch location of the touch event based on vibrations, such as bending waves, propagating through the interaction surface and b) determining whether the touch event comprises a hold touch event based on a sensed airborne signal. A device configured to carry out such methods is also provided.04-18-2013
20130093731Acoustic Touch Apparatus - Acoustic touch apparatus comprising a substrate having first and second surfaces capable of propagating surface acoustic waves, the second surface comprising a touch region and the first and second surfaces coupled via a rounded connecting surface; at least one acoustic wave transducer on the first surface; and at least one reflective array on the first surface. The transducer is capable of transmitting or receiving waves to and from the reflective array. The substrate and reflective array can acoustically couple waves between the first and second surfaces. The substrate has a border region on the first surface adapted to hide the transducer and reflective array and preclude distortion of waves propagating over a window in the border region. The border region may have a borderlayer except at the window and a corrective lens is used proximate the window, or the border region comprises discolored glass except at the window.04-18-2013
20130147770CONTROL OF ELECTRONIC DEVICES - An electronic device such as a smart-phone, has an active state in which it is able to receive inputs from an input object and a standby state in which at least one of said inputs is disabled. The device is configured to be switchable from the standby state to the active state upon the detection of the presence of the input object within a predetermined distance of the device and the subsequent detection of a predetermined user action.06-13-2013
20120274610INTERACTION SURFACES - An input apparatus has an interaction surface, an acoustic transmitter located adjacent the surface, an acoustic receiver located adjacent the surface and across the surface from the transmitter, and a processing environment. It is configured to transmit an acoustic signal(s) from the transmitter and to receive the signal or signals at the receiver. It detects the presence of an input object adjacent or touching the interaction surface by detecting an increase in the minimum time of flight, through air, of at least a part of the signal(s).11-01-2012
20120274609METHOD AND APPARATUS FOR ACTIVE ULTRASONIC TOUCH DEVICES - A system for determining a user indication is disclosed. The system includes a communication interface configured to send a signal to be used to propagate a freely propagating signal through a propagating medium with a surface and receive the freely propagating signal that has been disturbed by a disturbance on the surface. The system also includes a processor coupled to the communication interface and configured to process the received signal to determine a user indication associated with the disturbance.11-01-2012
20110242059METHOD FOR RECEIVING INPUT ON AN ELECTRONIC DEVICE AND OUTPUTTING CHARACTERS BASED ON SOUND STROKE PATTERNS - A method and electronic device for receiving input and outputting characters based on sound stroke patterns are described. In accordance with one embodiment, there is provided a method for receiving input on an electronic device, comprising: detecting sounds generated by characters written on a writing surface; identifying strokes defining the characters from the detected sounds in accordance with a number of predefined sound signatures, wherein each character written on the writing surface is defined by a stroke sequence comprising at least one stroke; determining at least one character which matches the at least one stroke in each stroke sequence; and outputting a string comprising the at least one character which matches the at least one stroke in each stroke sequence.10-06-2011
20110234545Bezel-less Acoustic Touch Apparatus - An acoustic touch apparatus is provided that includes a substrate capable of propagating surface acoustic waves, such as Rayleigh-type or Love-type waves. The substrate has a front surface, a back surface, and a curved connecting surface formed between the front surface and the back surface. The apparatus also includes at least one acoustic wave transducer and at least one reflective array, the acoustic wave transducer and the reflective array behind the back surface of the substrate. The acoustic wave transducer is capable of transmitting or receiving surface acoustic waves to or from the reflective array. The reflective array is capable of acoustically coupling the surface acoustic waves to propagate from the back surface and across the front surface via the curved connecting surface. Various types of acoustic touch apparatus with edge sensitive touch functions can be provided, according to specific embodiments.09-29-2011
20120280944TOUCH SENSOR WITH MODULAR COMPONENTS - A bending wave-type touch sensitive device for resolving moving and stationary contacts made to a substrate, the touch sensitive device comprised of a plurality of transducer boards coupled to a substrate.11-08-2012
20130155031USER CONTROL OF ELECTRONIC DEVICES - An electronic device (06-20-2013
20130181951FINGER-ON DISPLAY DETECTION - A user device comprising a touch display capable of operation in an on-touch mode or a touchless mode; one or more sensors to detect a sound wave produced when a user's finger or an instrument touches the touch display; one or more memories to store instructions; and one or more processing systems to execute the instructions and configure the one or more processing systems to: identify whether a detected sound wave includes characteristics indicative of when the user's finger or an instrument touches the touch display; and set a sensitivity mode of the touch display to a decreased level relative to an increased level associated with a touchless operation of the touch display.07-18-2013
20130120323Radial Layout for Acoustic Wave Touch Sensor - Surface acoustic waves in a radial pattern are used to detect touch. Different radial transducer arrangements may allow for locating multiple simultaneous touches without ambiguity. Instead of transmitting along a line to be reflected at multiple points, the surface acoustic waves are transmitted radially. The surface acoustic waves are transmitted along different angles in an angular span spread out over at least part of the touch region. Using acoustic waves traveling along intersecting paths, a point location of a touch may be determined by detection, in part, of at least one angle.05-16-2013
20130194241MIMO Sonic Touch Panel and MIMO Smart Sound Potential Server - A multi input and multi output (MIMO) sonic touch panel includes at least a sonic touch module and a display module. The sonic touch module includes a first carrier layer, a first vibrating layer and a first conducting layer. The first vibrating layer is disposed at the first carrier layer. The first conducting layer is disposed at the first carrier layer or the first vibrating layer and coupled with the first vibrating layer. The first conducting layer and the first vibrating layer are located at the same side or the opposite side of the first carrier layer. The display module is disposed opposite to the sound touch module. Besides, a MIMO smart sound potential server is also disclosed.08-01-2013

Patent applications in class Including surface acoustic detection