CN102591512A - Contact feedback system and method for providing haptic feedback - Google Patents
Contact feedback system and method for providing haptic feedback Download PDFInfo
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- CN102591512A CN102591512A CN2011101081746A CN201110108174A CN102591512A CN 102591512 A CN102591512 A CN 102591512A CN 2011101081746 A CN2011101081746 A CN 2011101081746A CN 201110108174 A CN201110108174 A CN 201110108174A CN 102591512 A CN102591512 A CN 102591512A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/96062—Touch switches with tactile or haptic feedback
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Abstract
The system has a touch-controller (14) i.e. touch-screen controller, coupled with a user contact interface e.g. resistive touch screen, to obtain and produce acquired data e.g. contact coordinate data and print data, and output a trigger signal in response to the data. A transmission path couples the touch controller with a driver element controller that is coupled with an interface surface area. The driver element controller receives the trigger signal from the touch controller via the transmission path, and outputs a drive signal to a driver element (24) in response to the trigger signal. An independent claim is also included for a method for providing a haptic feedback.
Description
Related application:
Followingly own together, co-applications and co-pending patent application all be incorporated into this through quoting in full: U.S. Patent application No.XX/XXX; XXX; Be entitled as " Method and Apparatus for Improving Dynamic Range of a Touchscreen Controller, " attorney docket is MAXIM-04400; U.S. Patent application No.XX/XXX, XXX is entitled as " Charge Transfer Scheme to Convert Capacitance to Voltage for Touchscreen Controller, " attorney docket is MAXIM-04500; U.S. Patent application No.XX/XXX, XXX is entitled as " Noise Cancellation Technique for Capacitivie Touchscreen Controller Using Differential Sensing, " attorney docket is MAXIM-04600; U.S. Patent application No.XX/XXX.XXX is entitled as " Use of Random Sampling Technique to Reduce Finger-Coupled Noise, " attorney docket is MAXIM-04800; And U.S. Patent application No.XX/XXX.XXX; Be entitled as that " Method and Apparatus for Generating Piezoelectirc Transducer Excitation Waveforms Using a Boost Converter, " attorney docket is MAXIM-04900.
Technical field
The present invention relates to the field of touch panel or touch-screen.More specifically, the present invention relates to provide the field of the touch panel or the touch-screen of tactile feedback.
Background technology
Many electric devices comprise the display of type of touch screens.Touch-screen is the display that detects usually by existence, position and the optional pressure of finger, hand, stylus or the touch of other pointing device in the viewing area.Touch-screen makes that the user can be directly mutual with display module without any need for middle device, rather than mutual indirectly via mouse, touch pad or mechanical keyboard layout.Touch-screen can be embodied in the computing machine or is embodied as the terminal in order to access network.Touch-screen is seen in point of sales system, Automatic Teller Machine (ATM), mobile phone, PDA(Personal Digital Assistant), portable game console, Satellite Navigation Set and massaging device usually.
The touch screen technology that has many types.The resistive touch screen panel is made up of several layers, and said several layers comprises two thin metal conducting layers being separated by thin space.When jobbie contact touch panel, said layer connects at the specified point place.In response to the object contact, this panel carries out electronic work similarly with two voltage dividers that are connected with output terminal.This causes electric current to change, and this electrorheological turns into to touch event and write down and be sent to controller for processing.
The material that the capacitive touch screen panel uses conduction to stride across the CC of sensor applies, partly applies or patterning.Sensor sheet reveals in the field of transverse axis and vertical axes precisely controlled store electrons on the two, thereby obtains electric capacity.Human body also is store electrons and the electric device that therefore also shows electric capacity.When being changed by another capacitance field (such as finger) with reference to electric capacity of sensor, the electronic circuit that is connected to this panel is measured resulting distortion with reference to electric capacity.The measured information relevant with touch event is sent to controller for mathematics manipulation.Capacitive sensor can or be used the electric installation contact by naked held with naked finger contact.Capacitive sensor is also based near coming work, and needn't directly contact and be triggered.In most of the cases, do not take place to contact, and conductive sensor is separated through insulating glass or plastic layer and user's health with the direct of electrically-conducting metal surface.Having purpose is often can be triggered through the palm of brandishing hand near the surface non-contiguously fast by the device of the capacitive character button of pointing contact.
The touch screen technology of other type comprises use hyperacoustic surface acoustic wave technique, infrared touch panel panel, the strainometer panel that is coupled to spring, optical imagery, seismic wave formula signalling technique (dispersive signal technology) and total internal reflection.
Haptic technology be meant through apply power, vibrate and/or move to the user via sense of touch with the technology of user interface.Whole device is vibrated, and such as the silent mode on the cell phone, perhaps only touch-surface is vibrated, such as tactile touch screen.Sense of touch or stereognosis feedback provides the contact of the button on the touch screen control panel or the affirmation of pushing, perhaps to the affirmation of the action taked.
Tactile feedback is to provide through following traditionally: one or more transducers are attached to touch-screen, and utilize said one or more transducer to vibrate whole or this panel of part.The localization tactile feedback is provided in some applications, wherein through utilizing heterogeneous actuator and on panel, obtain standing wave mode, make the actual partial vibration that is touched that has only panel.Transducer converts electrical signal into mechanical energy.Piezo-activator is sometimes as transducer.Piezo-activator vibrates when being excited by electrical signal.
Haptic feedback system comprises the feedback circuit that is coupled to touch-surface (such as touch-screen), is used to detect the touch of (a plurality of) position of being touched, processing and detecting and to touch-surface tactile feedback is provided in response to this processing.Fig. 1 explains traditional haptic feedback system, and it comprises touch-screen 2, capacitive touch screen controller 4, host controller system 8 and tactile actuator controller.Host controller system 8, capacitive touch screen controller 4 and tactile actuator controller 6 are coupled via serial bus interface 10.Touch-screen 2 is used for the capacitive touch screen that sensing touch shields the one or more sensors that when are touched for having.Original sensed data from sensor transmissions to capacitive touch screen controller 4.Institute's sensed data converts numerical information into by touch screen controller 4 and is sent to host controller system 8 for processing.Host controller system 8 is selected to handle the sense data through conversion according to which project on the touch-screen 2, and said project is to be confirmed by the information of touch location on the touch-screen 2 when touching generation and demonstration on touch-screen 2.For example, select the application-specific that is performed or action and host controller system 8 these selections of processing.Whether host controller system 8 decision issues signal to tactile actuator controller 6 as the part of this processing, this tactile actuator controller and then transmit the actuator that signal is given touch-screen 2.Actuator makes the touch-screen vibration.This actuator is any Mechatronic Systems that converts electrical energy into mechanical energy.In some applications, touch-screen 2 also can have and is used for one or more power sensing elements that sensing is applied to the pressure of touch-screen.Substitute the position data of institute's sensing or except the position data of institute's sensing, can the working pressure data generate the signal that is provided for tactile actuator controller 6.
Host controller system 8 has been introduced delay, and the haptic response that this delay is felt the user is postponed.Except carry out with the Processing tasks that is associated in the project of selecting on the touch-screen (its startup is for the demand of haptic response), host controller system maybe be occupied to carry out other Processing tasks.Sense of touch is highstrung.If touch-screen is touched, and vibration (haptic response) not in relative short time (for example 30 milliseconds) be felt, then the user infers that usually the original touch screen that is not touched senses, and normally carries out another time trial through more firmly pushing.This hysteresis is irritating for the user.The scope of the delay of tradition tactile feedback framework is from several milliseconds (when idle and customization sense of touch specific software has been added to the operating system of host controller system at host controller system) to 100 milliseconds or longer (when receiving numerical information under the busy situation of host controller system).Standard operation system is not supported tactile feedback, and this function is that a kind of customization is added.
Summary of the invention
A kind of haptic feedback system comprises: such as the user's interface device of touch-screen, this user's interface device comprises touch panel and the one or more sense of touch driving elements that are coupled to this touch panel; Touch controller; And actuator controller.Touch controller receives institute's sensed data of indicating touch event from this touch panel, and as responding and generate the sense of touch trigger pip and sending the sense of touch trigger pip to the actuator controller.The generation of sense of touch trigger pip and transmission get around any host controller system.In certain embodiments, this touch controller of special signal path coupling and this actuator controller, this sense of touch trigger pip is transmitted on this special signal path.In other embodiments, this sense of touch trigger pip is transferred to this actuator controller from this touch controller on serial bus interface.In response to the sense of touch trigger pip that is received, this actuator controller realize to one or more sense of touch driving elements of this touch-screen, form is the suitable drive signal of sense of touch waveform.
In one aspect; A kind of touch feedback system is disclosed; This touch feedback system comprises: the user touches interface; This user touches interface and comprises interface surface and the driving element that is coupled to this interface surface, and wherein this interface surface is configured to the sensing touch incident and transmits institute's sensed data in response to determined touch event; Touch controller, it is coupled to this user and touches interface, in order to receive institute's sensed data and to generate and the output trigger pip in response to institute's sensed data; Transmission path, it is coupled to the driving element controller with this touch controller; And driving element controller; It is coupled to this touch controller and is coupled to this interface surface; Wherein this driving element controller is configured to receive the trigger pip from touch controller via this transmission path, and in response to the trigger pip that is received to this driving element output drive signal.Touch controller converts institute's sensed data into numerical information.Touching feedback system also comprises and is coupled to this touch controller to receive the host controller system of this numerical information; Wherein this host controller system is configured to carry out the system-level processing corresponding to this numerical information, and wherein this host controller system does not generate control signal and exports control signal to this driving element controller in response to this numerical information in addition.Driving element can be tactile actuator or audio tweeter.This touch event of sensing and encourage the delay between this driving element to be equal to or less than 30 milliseconds.
On the other hand, another kind of haptic feedback system is disclosed.Haptic feedback system comprises: the user touches interface, and it comprises interface surface and the tactile actuator that is coupled to this interface surface, and wherein this interface surface is configured to the sensing touch incident, and transmits institute's sensed data in response to the touch event of institute's sensing; Touch controller, it is coupled to this user and touches interface to receive institute's sensed data and to generate and the output haptic signal in response to institute's sensed data; Transmission path, it is coupled to the tactile actuator controller with this touch controller; And tactile actuator controller; It is coupled to this touch controller and is coupled to this interface surface; Wherein this tactile actuator controller is configured to receive the haptic signal from this touch controller via this transmission path, and exports the sense of touch waveform in response to the haptic signal that is received to this tactile actuator.It can be that touch-screen and touch controller can be touch screen controllers that the user touches interface.Touch-screen can be capacitive touch screen or resistive touch screen.Interface surface can be display surface, one or more push type button or one or more capacitive character buttons.Transmission path can be single line interconnection, multi-thread interconnection or serial bus interface.Transmission path can be the direct connection between this touch controller and this tactile actuator controller.
Haptic signal can be the sense of touch trigger pip.The tactile actuator controller can comprise storer; This storer is configured to store a plurality of sense of touch waveforms to drive this tactile actuator; Wherein this sense of touch trigger pip can comprise sense of touch waveform sign in addition, and one of them outputs to this tactile actuator with a plurality of sense of touch waveforms of selecting to be stored thereby this sense of touch waveform sign is used by this tactile actuator controller.Haptic feedback system also can comprise the sense of touch waveform thesaurus that is coupled to this tactile actuator controller; Wherein this sense of touch waveform thesaurus can be configured to store a plurality of sense of touch waveforms to drive this tactile actuator; Wherein this sense of touch trigger pip can comprise sense of touch waveform sign in addition, and one of them outputs to this tactile actuator with a plurality of sense of touch waveforms of selecting to be stored thereby this sense of touch waveform sign is used by this tactile actuator controller.Haptic signal can be a low-voltage sense of touch waveform, and wherein this tactile actuator controller can be configured this low-voltage sense of touch waveform is boosted to the high voltage sense of touch waveform that is enough to activate this tactile actuator in addition.Touch controller converts institute's sensed data into numerical information.Haptic feedback system also can comprise and is coupled to this touch controller so that receive the host controller system of numerical information; Wherein this host controller system can be configured to carry out the system-level processing corresponding to this numerical information, and wherein this host controller system does not generate the sense of touch coherent signal and exports the sense of touch coherent signal to this tactile actuator controller in response to this numerical information in addition.Institute's sensed data can be touch coordinate data or pressure data.Haptic feedback system also can comprise the serial bus interface that is coupled to this touch controller, tactile actuator controller and host controller system.Serial bus interface can not rely on this transmission path and separates with this transmission path, and perhaps serial bus interface can be this transmission path, and wherein this haptic signal is addressed to this tactile actuator controller through this touch controller.This touch event of sensing and encourage the delay between this tactile actuator to be equal to or less than 30 milliseconds.Touch controller can be the IC chip with this tactile actuator controller separate package.Touch controller can be first IC chip, and the tactile actuator controller can be second IC chip, and wherein this first IC chip and second IC chip can be integrated into the multichip IC packaging body.Tactile actuator can be configured to the sensing touch incident.
Aspect another, a kind of method that tactile feedback is provided is disclosed.This method comprises the touch event on the sensing interface surface; Transmit institute's sensed data in response to the touch event of institute's sensing to touch controller; Generate haptic signal by this touch controller in response to institute's sensed data; Via transmission path this haptic signal is outputed to the tactile actuator controller from this touch controller; In response to this haptic signal, export the sense of touch waveform to the tactile actuator that is coupled to this interface surface by this tactile actuator controller; And according to this this tactile actuator of sense of touch waveform actuating.
Description of drawings
The accompanying drawing that is combined in this instructions and forms the part of this instructions shows the embodiment of haptic feedback system, and is used to explain the principle of haptic feedback system with instructions, but the present invention is not limited to disclosed instance.
Fig. 1 illustrates traditional haptic feedback system.
Fig. 2 illustrates the functional block diagram according to the haptic feedback system of the first embodiment of the present invention.
Fig. 3 illustrates the haptic feedback system of Fig. 2, and wherein sense of touch trigger pip is transferred to the actuator controller via the special signal path from touch controller.
Fig. 4 illustrates the haptic feedback system of Fig. 2, and wherein sense of touch trigger pip is transferred to the actuator controller via non-special signal path from touch controller.
Fig. 5 illustrates the functional block diagram of haptic feedback system according to a second embodiment of the present invention.
Embodiment
Embodiments of the invention relate to haptic feedback system.It will be appreciated by the skilled addressee that to following detailed description of the present invention only be illustrative, and purpose not to limit by any way.Other embodiments of the invention will easily instruct the technician to utilize the benefit of present disclosure.
Now, will be at length with reference to embodiments of the invention illustrated in the accompanying drawings.In accompanying drawing and following detailed description, use same reference numerals to refer to same or similar parts all the time.For the sake of clarity, do not illustrate and describe all conventional characteristics of embodiment described herein.Certainly, will understand, in the development of any this actual embodiment, must carry out many embodiments specific judgement, thereby realize developer's specific objective, use the constraint relevant such as meeting with commerce; And will understand, these specific objectives will change because of the different of embodiment and because of developer's difference.Moreover, will understand, this development effort will be complicated and consuming time, but for the those of ordinary skills that benefit from present disclosure, will be conventional engineering duty.
Although the embodiment below haptic feedback system will combine describes, will understand the method and system of said embodiment purpose and unrestricted these embodiment and instance.On the contrary, haptic feedback system is intended to contain spirit and the alternative in the scope, improvement and the equivalent that can be included in the haptic feedback system that is limited appended claims.Moreover, in following detailed description, this method and system more fully is described thereby provide many specific detail.Yet, for those of ordinary skill of the prior art, will know to be apparent that, can under the situation that does not have these specific detail, put into practice said method and system.
According to the application, some parts, treatment step and/or data structure can utilize all kinds disposal system that comprises hardware, software or its combination in any to implement.In addition, persons of ordinary skill in the art will recognize that the lower device of versatility that under the prerequisite of scope that does not deviate from inventive concept disclosed herein and spirit, also can use the device that is connected such as hardwire, special IC (ASIC) etc.
In certain embodiments, haptic feedback system comprises control panel, and this control panel is configured the haptic response function that tactile feedback is provided such as the touch-sensing input function of touch-screen and to the user.So use in the place, and this control panel is called touch panel.Touch panel can be conduction touch panel, resistive touch screen panel or other traditional touch sensitive interface.Haptic response is provided by one or more driving elements or actuator; This driving element or actuator are used to make the surface vibration of touch panel or physical motion otherwise, confirm so that provide for the physics of selection incident on the touch panel or touch event.This sense of touch or vibrational feedback are through utilizing this driving element of drive signal modulation that is provided by the actuator controller to produce.This drive signal is configured to basis or complicated wave form, such as square wave or sine wave.Therefore, drive signal is also referred to as the sense of touch waveform.In other embodiments, haptic feedback system is applied to the user's interface device that has capacitive character button or push type button and have display alternatively.Tactile feedback is used for vibrating in response to pushing one of said button one or more buttons.Although haptic feedback system is described according to touch-screen hereinafter, it should be understood that haptic feedback system can be applied to other usually and touch input, user's interface device.
Haptic feedback system comprises touch controller, and this touch controller receives institute's sensed data from touch panel, and generates haptic signal and send this haptic signal to the actuator controller as response.In certain embodiments, haptic signal is the sense of touch trigger pip.In other embodiments, haptic signal is actual sense of touch waveform.The generation of haptic signal and transmission get around any host controller system.In certain embodiments, the dedicated transmissions circuit is included between touch controller and the actuator controller, and haptic signal is uploaded defeated at this dedicated transmissions circuit.In other embodiments, haptic signal is transferred to the actuator controller from touch controller on serial bus interface.In response to the haptic signal that is received, the actuator controller is realized the suitable drive signal to one or more driving elements of touch-screen.Through eliminating the participation of host controller system, reduced by the touch event of touchscreen senses with to the delay between user's the corresponding haptic response.In addition, owing to when tactile feedback is provided, there is not host controller system to participate in, the active stack of host operating system does not need to change.
Fig. 2 explanation is according to the functional block diagram of the haptic feedback system of the first embodiment of the present invention.Haptic feedback system comprises user's interface device 12, touch controller 14, actuator controller 16 and host controller system 18.In certain embodiments, the IC chip of touch controller 14 for separating with actuator controller 16.In certain embodiments, touch controller IC chip and actuator controller IC chip encapsulate discretely.In other embodiments, touch controller IC chip and actuator controller IC chip are integrated into the multichip IC packaging body.In certain embodiments, user's interface device 12 is the capacitive touch screen panel, and it comprises touch panel 26 and the one or more driving elements 24 that are coupled to touch panel 26.In this case, touch controller 14 is as touch screen controller.Touch panel 26 is configured to touch event of sensing or a plurality of simultaneous touch events, thereby the expression user selects.Write down touch event through the direct contact on the touch panel or near contact, this is well known in the art.Touch panel can be conduction touch panel, resistive touch screen panel or other traditional type panel that can be used for the sensing touch incident.
User's interface device 12 will send to touch controller 14 by touch panel 26 sensed data.Touch controller 14 converts original sense data into numerical information.In certain embodiments, this numerical information is represented the number and the position of each touch event on touch panel of touch event.Also can represent out of Memory, for example touch event can be to cross waving of a plurality of points on the touch panel to sweep (swipe) and move, wave the direction of sweeping and wave the distance of sweeping.Wave sweep can typical example as being used for that the current images displayed or the page are rolled or for example being used to change to another a series of image of slide show or the scroll actions of the page.In certain embodiments, user's interface device 12 is configured to detect the actual pressure that is applied to touch panel 26.In this case, institute's sensed data comprises the pressure that is detected, and comprises the proportional tolerance of pressure with institute's sensing from the numerical information that institute's sensed data is converted to.Usually, numerical information can include but not limited to touch coordinate data and/or pressure data.To understand,, can also represent out of Memory by this numerical information as known in the art.
If touch controller 14 is confirmed to start haptic response, then touch controller 14 generates the sense of touch trigger pip.Be designed to provide in those configurations of a plurality of dissimilar haptic responses at haptic feedback system, touch controller 14 confirms that also said type is transmitted with the type of the haptic response that generates in this sense of touch trigger pip.Usually, can specify the dissimilar haptic response of N kind.In certain embodiments, 16 kinds of dissimilar haptic responses are available, and touch controller 14 like 4 bit sequences in the sense of touch trigger pip indicated and select said available types one of them.In certain embodiments, every type haptic response is represented the combination of specific sense of touch waveform or a plurality of specific sense of touch waveforms, and the sense of touch trigger pip comprises the waveform sign (ID) of one of said sense of touch waveform of representative or its combination.Touch controller 14 sends the sense of touch trigger pip to actuator controller 16.Be used in the situation of all haptic responses at single haptic response only, the sense of touch trigger pip can only comprise that 1 bit launches/forbid, to be used for starting or not starting haptic response.In certain embodiments, say, launch/forbid and also be counted as waveform ID for said 1 from launching the meaning that haptic response causes standard sense of touch waveform to be used.
In some applications, touch controller 14 is as intelligence system.For example, touch controller 14 is confirmed the touch event in N the zones of different of touch panels 26, and in response to the touch event that in the specific region, occurs, and this intelligence system is confirmed the respective waveforms ID that in the sense of touch trigger pip, sends.Based on the zone of institute's sensing, touch controller 14 sends unique sense of touch trigger pip to actuator controller 16.In other was used, touch controller 14 was as simple system, and where wherein uncertain touch event takes place go touch panel 26, and in response to touch event, simple sense of touch trigger pip is sent to the actuator controller.In response to simple sense of touch trigger pip, use acquiescence sense of touch waveform.For example when the keyboard that use to show is keyed in text message and when is selected to indicate each text character, only need simple acquiescence sense of touch waveform or pulse to make whole touch panel 26 vibrations.In this simplification situation, the sense of touch trigger pip is same signal, and with go touch panel 26, where sense touch irrelevant.
As shown in Figure 2, touch controller 14, actuator controller 16 and host controller system 18 are coupled via serial bus interface 20.Additionally, touch controller 14 is coupled to actuator controller 16 via interface 22.In certain embodiments, interface 22 is an one-wire interface.In other embodiments, interface 22 is multi-thread interface.Input by touch panel 26 detected any institute sensings is passed to touch controller 14 as raw data, and this raw data converts numerical information into from institute's sensed signal.This numerical information is handled by touch controller 14, to generate the sense of touch trigger pip.Touch controller 14 also sends to host controller system 18 with the numerical information of numerical information or treated version, handle for application, for example with touch panel 26 on the processing that is associated of the selection of application-specific icon.Touch controller 14 is not configured to carry out the application processes that is associated with the application that on touch panel 26, shows and select.Host controller system 18 is not handled this numerical information that is used for haptic response.About haptic response, haptic feedback system has got around host controller system 18.On the contrary, touch controller 14 is configured to carry out processing relevant with haptic response and direct signal notice actuator controller 16.From conceptive theory, touch controller 14 is formed for providing system feeling function, that be independent of host controller system 18 with actuator controller 16.
In certain embodiments, via the special signal path,, the sense of touch trigger pip is transferred to actuator controller 14 from touch controller 14 such as interface 22 shown in Figure 3.In certain embodiments, on touch controller 14 and actuator controller 16, have special-purpose I/O (I/O) pin, the purpose that only has of this pin is to send and receive the sense of touch trigger pip.Interface 22 is coupled to the special I/O pin on touch controller 14 and the actuator controller 16.
In certain embodiments, serial bus interface 20 usefulness act on the alternative signal transmit path of sense of touch trigger pip, and are as shown in Figure 4, therefore increased the redundancy of haptic feedback system.In other embodiments; Haptic feedback system is configured to not have the special signal path between touch controller 14 and the actuator controller 16; But use existing non-special signal path (such as serial bus interface 20) on the contrary so that the sense of touch trigger pip is sent to actuator controller 16 from touch controller 14, as shown in Figure 5.In this alternative configurations, when generating and send the sense of touch trigger pip, still got around host controller system 18.
Refer again to Fig. 2, actuator controller 16 is handled the sense of touch trigger pip that receives from touch controller 14.From the sense of touch trigger pip, discern waveform ID and select corresponding sense of touch waveform by actuator controller 16.Actuator controller 16 sends selected sense of touch waveform to driving element 24.In certain embodiments, sense of touch waveform this locality to be selected is stored in the actuator controller 16, such as being stored in local storage or the RAM.In other embodiments; The sense of touch waveform is stored in the sheet outer (off-chip) of actuator controller 16; And in response to the selection signal that sends from actuator controller 16, selected sense of touch waveform perhaps gets around actuator controller 16 and is sent to driving element 24 from this sheet external position or via actuator controller 16.In certain embodiments, the sense of touch waveform is perhaps in actuator controller 16 or in the 16 outside generations in real time of actuator controller.Sometimes, the actuator controller is embedded in another IC such as power management IC or multi-functional IC more generally, this actuator of block control of this IC.
One or more driving elements 24 are coupled to touch panel 26.Each driving element is for converting electrical signal into the transducer of mechanical motion.In certain embodiments, each driving element is ceramic driving element or piezoelectric drive element.In other embodiments, each driving element is motion coil and magnet.Should be understood that and to use the alternative traditional transducers that electrical signal is converted into mechanical motion.The sense of touch waveform is received as being used for the drive signal of said one or more driving element 24, said driving element and then according to frequency and the amplitude vibrations confirmed by this sense of touch waveform.The motion of one or more driving elements 24 causes the corresponding sports or the vibration of touch panel 26.
Pointed like preamble, user's interface device 12 can be configured to the actual pressure that sensing is applied to touch panel 26.In certain embodiments, said one or more driving element 24 can be configured to measure through on opposite direction, working the pressure that is applied to touch panel 26.For example, when piezoelectric transducer is pressed, mechanical strain cause this device, can be used as terminal voltage and redistributed by the electric charge in the material of sensing.Utilize the appropriate signals condition, this voltage can be with the sense of touch trigger pip that acts on transducer excitation.Usually, can use in this manner motion or the responsive any transducer of power, this transducer includes but not limited to the electromechanical vibration transducer.In other embodiments, the conventional pressure sensing element is attached to touch panel 26 to measure institute's applied pressure.In certain embodiments, measured pressure data is transferred to actuator controller 14 from user's interface device 12.Actuator controller 14 converts the pressure data that is received into the proportional numers word code, and this proportional numers word code is outputed to host controller system 18 and outputs to touch controller 14 via serial bus interface 20.Thus, measured pressure data also is counted as institute's sensed data, and said data are by touch controller 14 receive and generations that can be used to influence haptic signal.In other embodiments, measured pressure data directly is transferred to touch controller 14.
Hereinbefore, be that the situation of sense of touch trigger pip has been described haptic feedback system according to haptic signal.In other embodiments, the haptic signal that is generated and be transferred to actuator controller 16 by touch controller 14 is actual sense of touch waveform, rather than the sense of touch trigger pip.In this case, haptic signal is a low-voltage sense of touch waveform, and its selection with the previous sense of touch waveform of describing is selected similarly, except selection function is by touch controller 14 but not by 16 execution of actuator controller when carrying out.Actuator controller 16 boosts to corresponding high voltage sense of touch waveform with the low-voltage sense of touch waveform that is received, and this corresponding high voltage sense of touch waveform has the enough big voltage levvl that one or more driving elements 24 require.
In certain embodiments, thus host controller system 18 launch touch controller 14 in advance the sense of touch trigger pip sent to actuator controller 16.This launching can be changed by host controller system 18, for example selects the haptic response disablement feature on the touch panel 26 in response to the user.When at first selecting this haptic response disablement feature, haptic response is felt, because tactile feature is activated.After selecting to forbid tactile feature, host controller system 18 is handled the request of being somebody's turn to do, so Do not touch controller 14 sends the sense of touch trigger pip.In other words, touch controller 14 comprises the register or the sign of the generation that is used to launch/forbid the sense of touch trigger pip.This register/sign receives host controller system 18 controls.
The sense of touch trigger pip is provided to the actuator controller from touch controller, always causes tactile feedback timely, this is opposite with inconsistent feedback when transferring to host controller system the sense of touch trigger pip is provided.Said inconsistent feedback be since having activated in some cases of host controller system and in other situation unactivated inconsistent state cause.The delay scope of tradition tactile feedback structure (such as the system of Fig. 1) is for from several milliseconds (when idle and customization sense of touch specific software is added to the operating system of console controller when host controller system) to 100 milliseconds or longer (when host controller system is busy under receiving sense of touch trigger pip situation).Contrast with it, haptic feedback system of the present invention always provides haptic response timely, handle because touch controller 14 is carried out this haptic response, and the sense of touch trigger pip is sent to actuator controller 16 from touch controller 14.The delay of haptic feedback system is less than 30 milliseconds, the promptly human typical sensitivity that touches.In exemplary application, the delay of haptic feedback system is less than 10 milliseconds.
The present invention describes according to the specific embodiment that comprises details, so that understand structure of the present invention and work principle.This purpose of quoting to specific embodiment and details thereof is not the scope of restriction accompanying claims here.Those skilled in the art can make amendment in being selected for the said embodiment of explanation, and not deviate from the spirit and scope of the present invention clear.
Claims (46)
1. one kind touches feedback system, comprising:
A. the user touches interface, and it comprises interface surface and the driving element that is coupled to this interface surface, and wherein this interface surface is configured to the sensing touch incident, and transmits institute's sensed data in response to determined touch event;
B. touch controller, it is coupled to this user and touches interface, receiving institute's sensed data, and generates and the output trigger pip in response to institute's sensed data;
C. transmission path, it is coupled to the driving element controller with this touch controller; And
D. driving element controller; It is coupled to this touch controller and is coupled to this interface surface; Wherein this driving element controller is configured to receive the trigger pip from this touch controller via this transmission path, and in response to the trigger pip that is received to this driving element output drive signal.
2. according to the touch feedback system of claim 1, wherein this touch controller converts institute's sensed data into numerical information.
3. according to the touch feedback system of claim 2; Also comprise and be coupled to this touch controller so that receive the host controller system of this numerical information; Wherein this host controller system is configured to carry out the system-level processing corresponding to this numerical information, and wherein this host controller system does not generate control signal and exports this control signal to this driving element controller in response to this numerical information in addition.
4. according to the touch feedback system of claim 1, wherein this driving element comprises tactile actuator or audio tweeter.
5. according to the touch feedback system of claim 1, this touch event of sensing and encourage the delay between this driving element to be equal to or less than 30 milliseconds wherein.
6. haptic feedback system comprises:
A. the user touches interface, and it comprises interface surface and be coupled to the tactile actuator of this interface surface, and wherein this interface surface is configured to the sensing touch incident and in response to the touch event transmission institute sensed data of institute's sensing;
B. touch controller, it is coupled to this user and touches interface to receive institute's sensed data and to generate and the output haptic signal in response to institute's sensed data;
C. transmission path, it is coupled to the tactile actuator controller with this touch controller; And
D. tactile actuator controller; It is coupled to this touch controller and is coupled to this interface surface; Wherein this tactile actuator controller is configured to receive the haptic signal from this touch controller via this transmission path, and exports the sense of touch waveform in response to the haptic signal that is received to this tactile actuator.
7. according to the haptic feedback system of claim 6, wherein this user touches interface and comprises that touch-screen and this touch controller comprise touch screen controller.
8. according to the touch feedback system of claim 7, wherein this touch-screen comprises capacitive touch screen.
9. according to the touch feedback system of claim 7, wherein this touch-screen comprises resistive touch screen.
10. according to the haptic feedback system of claim 6, wherein this interface surface comprises display surface.
11. according to the haptic feedback system of claim 6, wherein this interface surface comprises one or more push type buttons.
12. according to the haptic feedback system of claim 6, wherein this interface surface comprises one or more capacitive character buttons.
13. according to the haptic feedback system of claim 6, wherein this transmission path comprises the single line interconnection.
14. according to the haptic feedback system of claim 6, wherein this transmission path comprises multi-thread interconnection.
15. according to the haptic feedback system of claim 6, wherein this transmission path comprises serial bus interface.
16. according to the haptic feedback system of claim 6, wherein this transmission path is included in the direct connection between this touch controller and this tactile actuator controller.
17. according to the haptic feedback system of claim 6, wherein this haptic signal comprises the sense of touch trigger pip.
18. haptic feedback system according to claim 17; Wherein this tactile actuator controller comprises storer; This storer is configured to store in order to drive a plurality of sense of touch waveforms of this tactile actuator; Wherein this sense of touch trigger pip comprises sense of touch waveform sign in addition, and this sense of touch waveform sign is used by this tactile actuator controller, thereby one of them outputs to this tactile actuator with a plurality of sense of touch waveforms of selecting to be stored.
19. haptic feedback system according to claim 17; Also comprise the sense of touch waveform thesaurus that is coupled to this tactile actuator controller; Wherein this sense of touch waveform thesaurus is configured to store in order to drive a plurality of sense of touch waveforms of this tactile actuator; Wherein this sense of touch trigger pip comprises sense of touch waveform sign in addition, and this sense of touch waveform sign is used by this tactile actuator controller, thereby one of them outputs to this tactile actuator with a plurality of sense of touch waveforms of selecting to be stored.
20. haptic feedback system according to claim 6; Wherein this haptic signal comprises low-voltage sense of touch waveform, and wherein this tactile actuator controller is configured to this low-voltage sense of touch waveform is boosted to the high voltage sense of touch waveform that is enough to activate this tactile actuator in addition.
21. according to the haptic feedback system of claim 6, wherein this touch controller converts institute's sensed data into numerical information.
22. haptic feedback system according to claim 21; Also comprise and be coupled to this touch controller in order to receive the host controller system of this numerical information; Wherein this host controller system is configured to carry out the system-level processing corresponding with this numerical information, and wherein this host controller system does not generate the sense of touch coherent signal and this sense of touch coherent signal is outputed to this tactile actuator controller in response to this numerical information in addition.
23. according to the haptic feedback system of claim 21, wherein institute's sensed data comprises touch coordinate data.
24. according to the haptic feedback system of claim 21, wherein institute's sensed data comprises pressure data.
25. according to the haptic feedback system of claim 22, also comprise serial bus interface, it is coupled to this touch controller, this tactile actuator controller and this host controller system.
26. according to the haptic feedback system of claim 25, wherein this serial bus interface does not rely on this transmission path and separates with this transmission path.
27. according to the haptic feedback system of claim 25, wherein this serial bus interface comprises this transmission path, wherein this haptic signal is addressed to this tactile actuator controller through this touch controller in addition.
28. according to the haptic feedback system of claim 6, this touch event of sensing and encourage the delay between this tactile actuator to be equal to or less than 30 milliseconds wherein.
29. according to the haptic feedback system of claim 6, wherein this touch controller is the IC chip with this tactile actuator controller separate package.
30. haptic feedback system according to claim 6; Wherein this touch controller comprises that first IC chip and this tactile actuator controller comprise second IC chip, and wherein this first IC chip and second IC chip are integrated into the multichip IC packaging body.
31. according to the haptic feedback system of claim 6, wherein this tactile actuator is configured to this touch event of sensing.
32. the method that tactile feedback is provided comprises:
A. the touch event on the sensing interface surface;
B. the touch event in response to institute's sensing transmits institute's sensed data to touch controller;
C. in response to institute's sensed data, generate haptic signal by this touch controller;
D. via transmission path this haptic signal is outputed to the tactile actuator controller from this touch controller;
E. in response to this haptic signal, the sense of touch waveform is outputed to the tactile actuator that is coupled to this interface surface by this tactile actuator controller; And
F. activate this tactile actuator according to this sense of touch waveform.
33. according to the method for claim 32, wherein this transmission path comprises the single line interconnection, and this method also is included in upward this sense of touch trigger pip of transmission of this single line interconnection.
34. according to the method for claim 32, wherein this transmission path comprises multi-thread interconnection, and this method also is included in this sense of touch trigger pip of transmission in this multi-thread interconnection.
35. according to the method for claim 32, wherein this transmission path comprises serial bus interface, and this method also is included in this sense of touch trigger pip of transmission on this serial bus interface.
36., wherein generate this haptic signal and comprise that the address that utilizes this tactile actuator controller carries out addressing to this haptic signal according to the method for claim 35.
37. according to the method for claim 32, wherein this haptic signal comprises the sense of touch trigger pip.
38., also comprise by this tactile actuator controller receiving this sense of touch trigger pip, and select the sense of touch waveform in response to the sense of touch trigger pip that is received according to the method for claim 37.
39. according to the method for claim 38, also comprise a plurality of sense of touch waveforms of storage, and select the sense of touch waveform comprise according to be included in sense of touch waveform in this sense of touch trigger pip identify select a plurality of sense of touch waveforms one of them.
40. according to the method for claim 32, wherein this haptic signal comprises low-voltage sense of touch waveform, wherein this tactile actuator controller is configured to this low-voltage sense of touch waveform is boosted to the high voltage sense of touch waveform that is enough to activate this tactile actuator in addition.
41., also comprise by this touch controller converting institute's sensed data into numerical information according to the method for claim 32.
42. method according to claim 41; Also comprise this numerical information is transferred to host controller system from this touch controller; Wherein this host controller system is carried out the system-level processing corresponding to this numerical information, and wherein this host controller system does not generate the sense of touch coherent signal and exports the sense of touch coherent signal to this tactile actuator controller in response to this numerical information in addition.
43. according to the method for claim 32, this touch event of sensing and encourage the delay between this tactile actuator to be equal to or less than 30 milliseconds wherein.
44. according to the method for claim 32, wherein institute's sensed data comprises touch coordinate data.
45. according to the method for claim 32, wherein institute's sensed data comprises pressure data.
46., wherein comprise that to this touch controller transmission institute sensed data the pressure data with sensing on this interface surface is transferred to this tactile actuator controller and it is transferred to this touch controller from this tactile actuator controller according to the method for claim 45.
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| CN102591512B (en) | 2017-11-10 |
| DE102011017250A1 (en) | 2012-07-12 |
| DE102011017250B4 (en) | 2022-12-01 |
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