CN101395562A - Illuminated touchpad - Google Patents

Illuminated touchpad Download PDF

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Publication number
CN101395562A
CN101395562A CNA2006800536309A CN200680053630A CN101395562A CN 101395562 A CN101395562 A CN 101395562A CN A2006800536309 A CNA2006800536309 A CN A2006800536309A CN 200680053630 A CN200680053630 A CN 200680053630A CN 101395562 A CN101395562 A CN 101395562A
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China
Prior art keywords
light
input
illumination
input media
touch
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CNA2006800536309A
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Chinese (zh)
Inventor
斯坦利·C·恩
邓肯·罗伯特·克尔
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Apple Inc
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Apple Computer Inc
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Application filed by Apple Computer Inc filed Critical Apple Computer Inc
Priority to CN201210546679.5A priority Critical patent/CN102981647B/en
Publication of CN101395562A publication Critical patent/CN101395562A/en
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Abstract

The present invention pertains to improved feedback mechanisms for touch pads. One aspect relates to devices capable of illuminating the touch sensitive surface of the touch pad. Another aspect relates to methods for providing visual feedback at the touch pad.

Description

Illuminated touchpad
Technical field
The present invention relates generally to the touch pad that visible feedback is provided.Particularly, the present invention relates to make and use up the illuminated touchpad that feedback is provided.
Background technology
There is multiple input media to be used at present in the computer system executable operations.These operations are substantially corresponding to moving cursor on display screen and/or make one's options.For example, these input medias can comprise button or button, Genius mouse, trace ball, touch pad, joystick, touch-screen etc.
Especially, touch pad since the easiness of its operation and multi-usage and more and more lower price and becoming become more and more popular.Touch pad make the user can by with the finger or stylus (stylus) simply touch input surface make one's options and moving cursor.Usually, touch pad is discerned importing lip-deep touch and touch location, and computer system makes an explanation to this touch and carries out action according to touch event subsequently.
Touch pad generally includes opaque touch panel, controller and software driver.Touch panel is registered (register) and is sent these signals to controller touch event.Controller is handled these signals and is sent data to computer system.Software driver is translated into the computing machine incident with touch event.
Although touch pad work gets well, but still wish to improve its form perception and function.For example, may wish to provide visual stimulation (stimuli) so that the user can operate touch pad better at the touch pad place.For example, visible stimuli (etc.) can be used for having registered when touching warning user, warning user and where touch taken place go touch pad, the feedback relevant with touch event, the state of expression touch pad etc. are provided at touch pad.
Summary of the invention
The present invention relates to a kind of illumination input media in one embodiment.Described illumination input media comprises object perception mechanism, and this mechanism can perception import lip-deep user's input.Described illumination input media also comprises visual feedback system, and this system is configured to import the described input surface of throwing light on explicitly with the user.
The present invention relates in another kind of embodiment and a kind of input media is carried out method of operating.This method comprises that perception imports lip-deep object.This method also is included in when perceiving object at least a portion of importing the surface is thrown light on.
The present invention relates in another kind of embodiment and a kind of input media is carried out method of operating.This method is included in when detecting object on the input surface at least a portion of importing the surface is thrown light on.This method also comprises regulates described illumination when object is mobile on the input surface.
The present invention relates in another kind of embodiment and a kind of input media is carried out method of operating.This method comprises that detecting the lip-deep user of input imports.This method also comprises based on the user imports the input state of judging input media.This method also comprises the input surface of throwing light on of the input state based on input media.Each input state has different illumination profile.
Description of drawings
With reference to the explanation of hereinafter carrying out in conjunction with the accompanying drawings, can understand the present invention best, in the accompanying drawings:
Fig. 1 is the simplified block diagram according to the input media of an embodiment of the present invention.
Fig. 2 is the method according to an embodiment of the present invention input device.
Fig. 3 is the method according to an embodiment of the present invention input device.
Fig. 4 is the rough schematic view according to the illuminated touchpad of an embodiment of the present invention.
Fig. 5 is the rough schematic view according to the illuminated touchpad of an embodiment of the present invention.
Fig. 6 A is the side view according to the illuminated touchpad of an embodiment of the present invention.
Fig. 6 B is according to an embodiment of the present invention, the exploded perspective view of the illuminated touchpad of Fig. 6 A.
Fig. 7 A is the side view according to the illuminated touchpad of an embodiment of the present invention.
Fig. 7 B is another kind of embodiment according to the present invention, the partial top view of the touch pad of Fig. 7 A.
Fig. 8 A is the side view according to the illuminated touchpad of an embodiment of the present invention.
Fig. 8 B is another kind of embodiment according to the present invention, the partial top view of the touch pad of Fig. 8 A.
Fig. 9 A is the side view according to the illuminated touchpad of an embodiment of the present invention.
Fig. 9 B is another kind of embodiment according to the present invention, the partial top view of the touch pad of Fig. 9 A.
Figure 10 is the synoptic diagram according to the illuminated touchpad of an embodiment of the present invention.
Figure 11 is another kind of embodiment according to the present invention, can be used on the synoptic diagram of the tabula rasa in the illuminated touchpad.
Figure 12 carries out method of operating according to an embodiment of the present invention to illuminated touchpad.
Figure 13 A illustrates according to an embodiment of the present invention, a kind of embodiment of illuminated angle direction fragment when the user is placed on its finger on the angle direction fragment.
Figure 13 B illustrates according to an embodiment of the present invention, when two fingers are placed on two angle direction fragments respectively, and a kind of embodiment that two angle direction fragments are thrown light on simultaneously.
Figure 14 A illustrates according to an embodiment of the present invention, when the user is placed on its finger on the input surface, and near and the illuminated a kind of embodiment of lighting point on every side of finger position.
Figure 14 B illustrates according to an embodiment of the present invention, when two fingers are placed on the input surface simultaneously, and two fingers regional illuminated a kind of embodiment on every side.
Figure 15 is according to an embodiment of the present invention, and illuminated touchpad is carried out method of operating.
Figure 16 A-16D illustrates according to an embodiment of the present invention, and along with finger moves on the surface of touch pad, illuminated part is followed a kind of embodiment of finger motion.
Figure 17 A-17D illustrates according to an embodiment of the present invention, and along with finger moves on the surface of touch pad, illuminated part is followed a kind of embodiment of finger motion.
Figure 18 is according to an embodiment of the present invention, and illuminated touchpad is carried out method of operating.
Figure 19 A is according to an embodiment of the present invention, the method that the state of touch pad is judged.
Figure 19 B is according to an embodiment of the present invention, the method that touch pad is thrown light on.
Figure 20 A and Figure 20 B illustrate according to an embodiment of the present invention, when touch pad is in first state with first color or intensity illuminated touchpad, and when touch pad is in second state with second color or intensity illuminated touchpad.
Figure 21 is according to an embodiment of the present invention, and illuminated touchpad is carried out method of operating.
Figure 22 A and Figure 22 B illustrate according to an embodiment of the present invention, when object has more applied bigger pressure near touch-surface or with respect to touch-surface, increase illumination intensity, and when object has applied littler pressure further from touch-surface or with respect to touch-surface, reduce illumination intensity.
Figure 23 is according to an embodiment of the present invention, and illuminated touchpad is carried out method of operating.
Figure 24 is according to an embodiment of the present invention, and illuminated touchpad is carried out method of operating.
Figure 25 A-25D illustrates according to an embodiment of the present invention, the low-intensity illumination is provided when detecting touch first, when object slowly moves (for example low acceleration) around input is surperficial, provide the medium tenacity illumination, and high intensity illumination is provided when object centers on the surperficial fast moving of input (for example high acceleration).
Embodiment
The feedback mechanism that is used for touch pad that the present invention relates to improve.Aspect relates to the device that can throw light on to the touch sensitive surface of touch pad.Not only to carry out back lighting, and other feedbacks relevant with how using touch pad are provided so that the user knows under the low light condition where touch pad is positioned at.Another aspect relates to the method that is used for providing at the touch pad place feedback.For example,, when finger moves, provide lighting point near touch sensitive surface thereupon, different conditions is shown with different luminance levels or color based on the change intensity or the color of kinetic characteristic and/or pressure, or the like.
With reference to Fig. 1-25 embodiments of the invention are discussed below.But, one of ordinary skill in the art will readily recognize that the detailed description that provides in conjunction with the accompanying drawings is for illustration purpose here, because the present invention extends to outside these limited embodiment.
Fig. 1 is according to an embodiment of the present, the simplified block diagram of input media 10.Input media 10 can be the independent peripheral device that is connected to main frame by wired connection or wireless connections, perhaps also can be integrated in the host apparatus and (for example carry out hardwired).Under any situation, input media 10 all is configured to host apparatus input is provided.The example of host apparatus comprises any consumer's of relating to electronic installation, for example computing machine, PDA, media player, phone etc.
Order, make one's options or follow the tracks of (tracking) so that for example initiate in order to produce input, input media 10 comprises object perception mechanism 12, this mechanism be configured to detect be near the input surface 13 and/or with the input surface 13 one or more objects that contact.Object perception mechanism 12 can and/or touch perception based on degree of approach perception (proximity sensing).
Under the situation of degree of approach perception, input surface 13 can be the surface under the degree of approach perception field.When such as the object of finger (or stylus) in the input surface and perception field (for example x and y plane) in when mobile, by side from the teeth outwards and in the perception field, keep the object of ad-hoc location and/or make object perception mechanism 12 generation input signals by the object that passes the perception field or move turnover perception field (for example z direction).Proximity detection can be based on following technology: these technology include but not limited to electric capacity, electric field, inductance, Hall effect, reed (reed), eddy current, magnetic resistance, optical shadow, optics visible light, optics IR, optical color identification, ultrasonic, acoustic emission, radar, heat, sonar, electricity is led or resistance etc.
Under the situation that touches perception, input surface 13 can be to the tactiosensible touch-surface of direct entity.When going up on input surface (for example x and y plane) when mobile, by making object perception mechanism 12 generation input signals at the object that keeps ad-hoc location on the input surface and/or by the object that on the input surface, knocks with input surface 13 objects that contacts.Touching perception can be based on following technology: these technology include but not limited to resistance, electric capacity, infrared and surface acoustic wave.Utilize the example of the touch sensing device of these technology to comprise touch pad, touch-screen etc.
Particularly, perception zone (i.e. the perception field of input surface or input surface) is divided into the perception point, sensing node or the perception zone that distinguish on several independences and the space usually.Perception point is hiding and invisible usually, and scatters around the perception zone, and each perception point is represented the diverse location in the perception zone.The perception point can be located in the mode of grid or pel array, and wherein, the perception of each pixelation point can produce signal.Under the simplest situation, when object was positioned at perception point top at every turn, signal was produced.When object is positioned at a plurality of perception points top, perhaps when object is mobile between a plurality of perception points or above a plurality of perception point, can produce a plurality of signals.Perception point is mapped to the perception zone in the coordinate system usually, for example rectangular coordinate system, polar coordinate system or other coordinate systems.In addition, touching sensing device can also be based on single-point perception or multiple spot perception.Single object can be only distinguished in the single-point perception at any time, and the multiple spot perception can be distinguished a plurality of objects simultaneously.
Input media 10 also comprises visual feedback system 14, and visual feedback system 14 is configured to export visual effect explicitly at surperficial 13 places of input and object sensory perceptual system 12.Touching by object sensory perceptual system 12 or degree of approach when input, by providing visible feedback to the user, visual feedback system 14 is exclusively used in the work that strengthens input media 10.For example, visual effect can be used to show the position on input surface 13, thereby makes the easier input of user (for example back lighting).
Replacedly or additionally, visual effect can also be used in the process of incoming event or after the incoming event, dynamically to show the characteristic that is associated with incoming event.Described characteristic for example can comprise with respect to incident, place and the number of importing surface 13 inputs of carrying out.This class feedback is also by providing the visual cues relevant with input media 10 to improve input to the user when using input media 10.
Replacedly or additionally, visual effect can also be used in before the incoming event, to require the user to carry out specific incoming event at surperficial 13 places of input.This class feedback is also by helping the user to carry out suitable input or helping its study input gesture (gesture) (for example opportunity, position and motion) to improve input.
As a rule, visual effect (output) is to interrelate, bind (tie) and related with the incoming event of carrying out.These effects do not provide the outside output that is associated with the outside event of input media usually, although they also can provide such output.In other words, visual effect does not work independently usually and gives any device except input media 10 as output (for example, visual feedback system should not regarded independent display as).
Visual feedback system 14 comprises one or more visual change elements 15.Visual change element 15 can be that the induction element with object sensory perceptual system 12 separates, and also can become one with it.In some cases, these one or more visual change elements 15 can be mapped to, are associated with or are tied to one or more sensing nodes of object sensory perceptual system.The number that is tied to the visual change element of specific sensing node can be less than, equal or more than the number of sensing node.
The visual resolution that changes mechanism 15 can be miscellaneous.In one embodiment, the visual resolution of mechanism 15 that changes is greater than sensing node (for example, the number of visual change element is more than the number of sensing node).In another kind of embodiment, the resolution of visual change element 15 equals the resolution (for example, the number of visual change element 15 equals to change a social system the number of node substantially) of sensing node substantially.In another embodiment, the resolution of visual change element 15 is less than the resolution (for example, the number of visual change element is less than the number of sensing node) of sensing node.Resolution generally depends on the needs of concrete input media.In some cases, need high resolving power to produce dynamic visual effect (for example graphical effect).In other cases, only need low resolution, for example in the situation that visual change is carried out in the same big zone with finger.
Visual feedback system 14 can be miscellaneous.In one embodiment, visual feedback system 14 is based on the system of light, and this system throws light on to importing surface 13.In this embodiment, visual change element 15 is implemented with the form of light emitting devices.Light emitting devices can comprise one or more light sources, and is used for light is imported the light distribution system that surperficial 13 places distribute.In some cases, can be from the light of light source by diffusion, make input surface 13 emissions special honorable (be not accurate luminous point, but fuzzy honorable effect or fluorescence brilliance).In other words, the input surface can produce brilliance (glowing) special-effect, and these effects are provided backlight for example can for input surface 13 and/or be provided profile, track or shade to perceived object on the input surface 13.Honorable special-effect even can identify the state of input media is for example when input media is in tracking mode or gesture state.
Perhaps, visual feedback system can be based on the system of figure, and this system produces figure in the input surface.LCD, OLDE and electric ink are based on the example of the system of figure.But, to compare with system based on light, these devices may be excluded because of cost, and implement may be more complicated.
Input media 10 also comprises controller 16, but controller 16 is coupled to object sensing device 12 and visual feedback system 14 with mode of operation.The signal that 16 pairs of surperficial 13 places of input of controller produce monitors and corresponding control signal associated therewith is sent to host apparatus that host apparatus is programmed according to it and explained these signals.(for example incoming event).Controller 16 also produces the visual effect order, to control the visual effect of being exported by visual feedback system 14.Single order or a plurality of order be can produce and one, the visual change element of some or all changed simultaneously.In addition, these orders can be based on the signal that is produced by object sensing device 12.
In one embodiment, controller 16 can change in remarkable mode in the zone of detected object by command visible change element, to show the position of this object with respect to input surface 13.In another kind of embodiment, these orders can be based on the instruction from main frame.For example, host apparatus can carry out back lighting in 10 pairs of input surfaces 13 of instruction inputting device, perhaps make input surface change (for example, host apparatus can instruct the user how to carry out specific gesture with the input surface) in the mode of reminding the user to carry out specific operation with respect to the input surface.
Fig. 2 carries out method of operating 50 to input media according to an embodiment of the present.Input media for example can be an input media shown in Figure 1 and described.This method starts from square frame 52, wherein, detects one or more objects in the perception zone.This for example can realize by above-mentioned object sensing device.After square frame 52, this method advances to square frame 54 and 56.At square frame 54, based on detected object in perception zone display of visually effect.This for example can realize by above-mentioned visual feedback system.
In one embodiment, in the zone of detected object, carry out visual effect.For example, under the situation based on the system of light, detected object below and/or zone on every side can be illuminated.As known, can when moving in the perception zone, object make visual effect follow this object on every side.In fact, in some cases, visual effect can comprise leading edge, main body and/or trailing edge.Leading edge shows the place that object is pointed, and main body shows the current location of object, and trailing edge shows the object place at place once.
In another kind of embodiment, carry out visual effect to show the state of object perception events.For example, if an object is detected, then can carry out first visual effect; And if a plurality of object is detected, then can carry out second visual effect.This can help situation of following the tracks of with single object and the situation of carrying out gesture with a plurality of objects.
At square frame 56, produce control signal based on the object that is detected.This for example can be realized by above-mentioned controller.These signals are reported to host apparatus as incoming event, and host apparatus is programmed according to it and explained these signals.
Fig. 3 carries out method of operating 70 to input media according to an embodiment of the present.This input media for example can be an input media shown in Figure 1 and described.This method starts from square frame 72, wherein in perception location display of visually effect.This for example can be realized by above-mentioned visual feedback system.
In one embodiment, visual effect is based on the control signal from host apparatus.For example, host apparatus can the command visible feedback system be exported visual effect, to promote the user object is placed the ad-hoc location of input surface or carries out gesture (for example training sequence) in the specific operation process of host apparatus.
After square frame 72, this method advances to square frame 74 and 76.At square frame 74, the perception zone is monitored.This for example can be realized by above-mentioned object sensing device.At square frame 76 places, produce control signal when in the perception zone, detecting object.This for example can be realized by above-mentioned controller.These signals can be by host apparatus as incoming event.
Fig. 4 is according to an embodiment of the present, the rough schematic view of touch pad 100.In the present embodiment, touch pad 100 comprises that the optical transmission formula that is arranged in tabula rasa 104 tops touches sensing device 102.Touching sensing device 102 all communicates by letter with controller 106 with tabula rasa 104, touch input on the touch sensitive surface 108 of 106 pairs of touches of described controller sensing device 102 monitors, and indication tabula rasa 104 is transmitted into light the direction that touches sensing device with controlled manner.
It can be miscellaneous touching sensing device.Touch sensing device and for example can be selected from any of the touch sensing device that is used for touch-screen.
Tabula rasa can be miscellaneous.In one embodiment, tabula rasa is the lighting fixture of pixelation, and this device comprises a plurality of light sources that are distributed on the extensional surface, and described surface for example touches the touch sensitive surface of sensing device.Tabula rasa can comprise a plurality of light emitting diodes (LED), and described light emitting diode is with the matrix-style layout of for example ranks.Can use the LED of any number.This number depends on the resolution that tabula rasa is required usually.Under the simplest situation, LED on PCB in rows and columns one by one or one near one ground arranging, the size of described PCB with touch sensing device similar (for example covering area identical).
Fig. 5 is according to an embodiment of the present, the rough schematic view of touch pad 120.In the present embodiment, touch pad 120 comprises that the opaque or optical transmission formula that is arranged in tabula rasa 124 belows touches sensing device 122.Touch sensing device 122 and all communicate by letter with controller 126 with tabula rasa 124, described controller monitors the input of the touch on the touch sensitive surface 128 that touches sensing device 122 and indicates tabula rasa 124 with controlled manner emission light.
It can be miscellaneous touching sensing device.For example, touch sensing device and can be selected from any of the touch sensing device that is used for touch-screen.
Tabula rasa also can be miscellaneous.Different with the tabula rasa that Fig. 4 is discussed, this tabula rasa need make and touch perception and can pass it and take place.It is diffusion to a certain extent that tabula rasa also needs, so that shown electronic installation below tabula rasa obtains hidden.In one embodiment, tabula rasa comprises one or more light sources, and is used for the light from light source is distributed in light distributor gear on the extensional surface, and described extensional surface for example touches the touch sensitive surface of sensing device.The light distributor gear can comprise for example light pipe or photoconduction, and they make light source can arrange away from the perception field.In one embodiment, the light distributor gear is formed by dielectric material, thereby makes the touch perception pass its generation by hindering (for example electric capacity).For example, can use transparent or semitransparent plastic material.
Fig. 6 A and Fig. 6 B are according to an embodiment of the present, the synoptic diagram of illuminated touchpad 150.Touch pad 150 comprises touch-screen 152 printing opacity or semi-transparent, and the pixelation tabula rasa 154 that is arranged in touch-screen 152 belows.Touch-screen 152 is divided into several independent and spatially distinguish perception point, sensing node or perception zones.The perception point is hidden and invisible (transparent), and is arranged near the touch-screen 152, and each perception point is represented the diverse location on the touch screen surface (or touch screen plane).The perception point can be with the form location of grid or pel array, and wherein the perception of each pixelation point can produce signal.Under the simplest situation, when object was positioned at perception point top, signal was produced at every turn.When object is positioned at a plurality of perception points top, or object can produce a plurality of signals between a plurality of perception points or above a plurality of perception point when mobile.
In one embodiment, touch-screen 152 comprises a plurality of electric capacity sensing nodes.The electric capacity sensing node can be miscellaneous.For example, the electric capacity sensing node can be based on selfcapacity or mutual capacitance (mutual capacitance).Under the situation of selfcapacity, unitary electrode " self " is measured with respect to the electric capacity of ground connection.Under the situation of mutual capacitance, the mutual capacitance between at least the first electrode and second electrode is measured.In either case, each node all is independent of other nodes and works, thereby produces the simultaneous signal of representing difference on the touch-screen 152.
In order to produce transparent touch screen 152, can form the electric capacity sensing electrode with transparent conductor medium (for example tin indium oxide (ITO)).
Under the situation of selfcapacity perceptual structure, the transparent conductor medium is patterned, and becomes the electrode and the trace that separate on the space.The different coordinate of each electrode representative, trace is connected to electric capacity perception circuit with electrode.Coordinate can be associated with rectangular coordinate system (x and y), polar coordinate system (r, θ) or other coordinate systems.In the course of the work, electric capacity perception circuit monitors the electric capacity change that each electrode place takes place.The position that changes and the size of these changes are used to discern touch event.When the user is placed on object (for example finger) with the approaching place of electrode, electric capacity takes place at the electrode place usually to be changed, that is, object has been taken electric charge away, thereby has influenced electric capacity.
Under the situation of mutual capacitance, the transparent conductor medium is patterned, and becomes one group and is formed at line on two different layers, apart.Drive wire is formed on the ground floor, is formed on the second layer and perception is linear.Although separate by being on the different layers, the perception line traverses, intersects or pass (cutacross) drive wire, thereby forms capacitive coupling electrode.The mode that the perception line passes drive wire depends on used coordinate system usually.For example, under the situation of rectangular coordinate system, the perception line is perpendicular to drive wire, thereby formation has the node of different x and y coordinate.Perhaps, under the situation of rectangular coordinate system, the perception line can be a concentric circles, and drive wire can be the line (vice versa) that radially extends.Drive wire is connected to voltage source and the perception line is connected to electric capacity perception circuit.In the course of the work, once come drive current through a drive wire, because capacitive coupling, electric current advances to perception line (for example point of crossing) at each node place.In addition, the perception circuit monitors the electric capacity change that each node place takes place.The position that changes and the size of these changes are used to help a plurality of touch events of identification.When the user is placed on object (for example finger) with the approaching place of electric capacity sensing electrode, electric capacity takes place at capacitive coupling node place usually to be changed, that is, object has been taken electric charge away, thereby has influenced electric capacity.
Referring now to tabula rasa 154, tabula rasa 154 comprises light emission surface, and described light emission surface is divided into several perception point, sensing node or perception zones 156 of independently, distinguishing on the space usually.Illuminated point 156 is arranged near the light emission surface, and each perception point 156 is represented the diverse location in the light emission surface.Illuminated point 156 can be with the form location of grid or pel array, and wherein the illuminated point of each pixelation can be launched light.Illuminated point 156 is mapped to coordinate system with illuminated zone usually, for example rectangular coordinate system, polar coordinate system or certain other coordinate systems.In some cases, illuminated point can come layout (for example, identical coordinate system, identical counting out) to put similar pattern with the perception of touch pad 152.In other cases, illuminated point 156 can come layout (for example different coordinate systems, different counting out) with the pattern different with the perception point of touch pad 152.
Tabula rasa 154 can be miscellaneous.In an illustrated embodiment, illuminated point 156 is implemented in the mode of each light emitting diode, and these light emitting diodes are arranged with the pattern that is similar to grid, thus the field of illumination of formation pixelation, that is and, each light emitting diode forms lighting nodes.The direction of grid can be the mode of row and column (x and y), also can be in the mode of angle/radial segment (segment) (as shown in the figure).In addition, LED is attached to printed circuit board (PCB) 160, but and is coupled to the controller 158 that is positioned at printed circuit board (PCB) 160 back sides with mode of operation.
But touch-screen 152 also is coupled to controller 158 with mode of operation, for example comes attaching with the flexible circuit that is attached to printed circuit board (PCB) 160.In the course of the work, the 158 pairs of electric capacity of controller change and monitor, and change based on these and to produce control signal.Controller 158 is also regulated the intensity of each LED respectively and is come with controlled manner partly or entirely throwing light on to touch-screen 152.That is, control the intensity of LED by via controller 158, tabula rasa 154 can produce the various light effects of any number.Because touch-screen 154 is printing opacities, so can see light through touch-screen 154.
In some cases, touch pad 150 can also comprise light diffusion body 162.Light diffusion body 162 is configured to the light by tabula rasa 154 emissions is carried out diffusion.This can realize by following manner: the light intensity of LED is carried out regularization (normalize), and special honorable to produce in the input surface, and/or make the touch pad physical components that is positioned at light diffusion body below obtain hidden.
Although light diffusion body 162 can comprise the Colour composition part, as a rule, the light diffusion body shows as white or translucent white material.When implementing with white element, light diffusion body 162 manifests the color by the light of LED emission.Generally speaking, the somewhere of light diffusion body 162 between LED and input surface.More specifically, light diffusion body 162 can be positioned at top, inside or the below of touch-screen.For example, light diffusion body 162 can be placed in upper surface, lower surface or each layer of touch-screen.Replacedly or additionally, light diffusion body 162 can become one with tabula rasa or be attached to tabula rasa, even can be the independent ingredient (as shown in the figure) that is arranged between tabula rasa 154 and the touch-screen 152.
Light diffusion body 162 can be with many multi-form enforcements, for example comprise adjuvant in one or more layers of surface treatment on one or more layers of touch-screen, touch-screen, be arranged in rigidity plastics embolus above or below the touch-screen, be arranged in flexible label above or below the touch-screen etc.Light diffusion body 162 even can be the used ITO coating (for example, the density of ITO coating is big more, and light is just big more by the amount of diffusion) of awareness tool that forms touch-screen.
In an illustrated embodiment, light diffusion body 162 is the plastics emboluss that comprise the light scattering adjuvant.In addition, light diffusion body 162 is arranged between tabula rasa 154 and the touch-screen 152.
Should be pointed out that LED provides the many advantages that are better than other light sources.For example, LED is less device, and they are more effective and long-lived aspect energy.LED is also cheap with lower temperature work and price.In addition, LED occurs with various colors, for example white, blueness, green, redness etc.The LED of pixelation can be configured to launch identical photochromic coloured silk or different photochromic coloured silks.
In addition, although the form with a plurality of independent LED illustrates, but it should be noted that, LED also can implement with the form of the integrated array of LED, and described array for example is grouped into cooperation together and produces the array of redness, blueness, green and/or the White LED of gained color (for example passing through color mixture).The gained color can be wide Color Range, for example from most of color of chromatic spectrum.In the course of the work, controller can produce almost any color by the intensity of regulating each color LED.For example, in order to produce the highest red degree (shade), green and blue intensity is lowered to zero intensity, and red intensity is increased to its peak strength.Green and blue maximum chroma can be realized in a similar manner.In addition, in order to produce red and green colourity, green and red colourity is increased to the level that is higher than zero intensity, and blue intensity is lowered to zero intensity.Green and blue colourity and blue and red colourity also can realize in a similar fashion.In addition, in order to produce white colourity, red, green and blue intensity is increased to the par that is higher than zero intensity, perhaps makes redness, green and blue led shutoff and White LED is opened.
Although integrated LED array has been described, should be noted that this is not a kind of restriction, also can use other array modes with the three primary colors mode.For example, integrated LED array can be configured to include only two kinds in the primary colors, perhaps can include only the LED that has single color.
When LED can produce any color, can produce unique input surface.For example, touch pad can produce the input surface in the quadrant of the spot that has rainbow striped, different color, different color or zone etc.Touch pad can also produce the input surface of the pattern with dynamic change.This is normally by activating different LED the difference time or regulating that the intensity of different LED realizes in difference the time.
Fig. 7 A and Fig. 7 B are the synoptic diagram according to the touch pad 200 of another kind of embodiment of the present invention.Touch pad 200 comprises each layer, and these layers comprise tabula rasa 202, electrode layer 204 and printed circuit board (PCB) 206 (PCB).Electrode layer 204 is positioned on the PCB 206, and tabula rasa 202 is positioned at electrode layer 204 tops.
Electrode layer 204 comprises the electrode 204 that separates on a plurality of spaces, and the electric capacity change that these electrodes 205 are configured to upper surface 208 places of focalization plate 202 detects.But each electrode 205 is coupled to controller 210 with mode of operation, and controller 210 is positioned at the back side of printed circuit board (PCB) 206.In the course of the work, controller 210 monitors the electric capacity change and produces control signal based on these changes.
Tabula rasa 202 comprises light distributing panel 212 that is arranged on the electrode layer 204 and one or more side-mounted (side mounted) light emitting diode 214 that centers on the periphery of light distributing panel 212.Side-mounted light emitting diode 214 is configured to import light in the different piece of light distributing panel 212.Perhaps, can be with light pipe to leading from the light of position away from the LED of light distributing panel 212.Light distributing panel 212 is configured to by the upper surface of light emitting diode 214 light-redirecting incident thereon to light distributing panel 212, thus illuminated touchpad surface 201.Light distributing panel 212 also is configured to the dielectric layer as covers electrode layer 204, to help to form the electric capacity perception circuit of touch pad 200.
As shown in the figure, LED 214 is attached to printed circuit board (PCB) 206, but and is coupled to the controller 210 that is positioned at printed circuit board (PCB) 206 back sides with mode of operation.In the course of the work, controller 210 is optionally regulated the intensity of each LED 214, thereby with controlled manner partly or entirely throwing light on to light distributing panel 212.
Although the form with a plurality of independent LED illustrates, LED also can realize with for example form of the array of redness, blueness and green LED.For example such array-type LED can produce the most of color in the chromatic spectrum.
Light distributing panel 212 can be miscellaneous.In one embodiment, light distributing panel 212 is the individual components that are arranged in the housing 211 of touch pad 200.For example, light distributing panel 212 is inserted into the opening interior (as shown in the figure) of housing 211.In this structure, it is concordant with the outside surface of housing 211 that the upper surface of light distributing panel 212 is arranged to, and perhaps is recessed into its below.In addition, enter touch pad 200 in order to provide to closely cooperate with restriction dust and particle, light distributing panel 200 can comprise the edge of the outside surface top that extends to housing 212.
In another kind of embodiment, light distributing panel 212 is the parts that integrate of housing 122.For example, housing 122 is formed by transparent or semitransparent material.This specific embodiment provides the continuous surface of band gap not or breach, and this can make the user joyful aesthetically.
Among any embodiment in these two, light distributing panel 212 is usually included in the part 213 of the inside surface below extension of housing 211.This part 213 provides optical receiving region in the side of light distributing panel 212, to receive the light by side-mounted LED 214 emissions.
Light distributing panel 212 can be formed by single layer or a plurality of layers, and is formed by printing opacity or semi-transparent dielectric material usually, and described dielectric material for example comprises plastic material (as polycarbonate, acryl resin or ABS plastic).But should be understood that these materials are not restrictions, also can use the dielectric material of transmissive on any optics.
As a rule, the light distributing panel 212 of touch pad 200 or certain other element comprise light diffusing member, so that incide light diffusion on it, thereby make the light intensity regularization of LED, hide at the special brilliance of input surface generation and/or to the touch pad physical components that is positioned at the input lower face thus.Light diffusing member can be arranged on the inside surface, on the outside surface, perhaps also can embed light distributing panel 212 inboards.Additionally or replacedly, light diffusing member can also be applied to the independent optical element that light distributing panel 212 tops are arranged.
In one embodiment, light diffusing member is the adjuvant that is arranged in the light distributing panel 212.For example, light diffusion panel 212 can comprise a plurality of optical scatters, and these particulate dispersion are between the top surface and basal surface of light diffusion panel.When making light incide on the inside surface, it can pass 212 transmissions of light diffusion panel, up to meeting with the optical scatter that is arranged in the panel.After meeting with optical scatter, light is along the outside scattering of a plurality of directions, and promptly light is reflected and leaves surface and/or the refraction of process optical scatter, thereby produces special honorable.For example, optical scatter can be formed by little glass particle or Chinese white.In addition, be arranged in the amount of the optical scatter in the panel by change, honorable characteristic can change, that is, particle is big more, and light scattering is just big more.
In another kind of embodiment, light diffusing member is layer, coating and/or the texture of the inside surface, side surface or the outside surface that are applied to panel 212.For example, light scattering coated can be paint, film or spray-painting.In addition, the light scattering texture can be the treatment surface that sandblasts of the molded surface or the panel of wall.When making light incide on inside surface or the outside surface, light be applied to this lip-deep light scattering coated or texture meets.After meeting with light scattering coated or light scattering texture, light is along the outside scattering of a plurality of directions, that is, light is reflected and leaves this surface and/or the refraction of process optical scatter, thereby produces special honorable.
In an illustrated embodiment, light diffusing member is realized in the mode of light diffusion label 216.Light diffusion label 216 is adhered to the top surface of light distributing panel 212 at least.In some cases, label 216 even can extend to the edge top of housing wall 211 and adhere to the there.Under for example such situation, light diffusion label 216 even can be placed in the sack that the recess by the top place of housing wall 211 forms, thus make the top surface of light diffusion label 216 concordant with the outside surface of housing wall 211.Label 216 can have printing figure thereon, can have multicolour, and can have the thickness of variation, to help the intensity and the color of control illumination.Label 216 can be formed by transparent or semitransparent dielectric material (for example mylar (Mylar) or polycarbonate) or any other dielectric material, described other dielectric materials be approach, on the optics transmissive and comprise certain light diffusing device.
In addition, light distributing panel 212 can be configured to single node, also can be divided into a plurality of different nodes 218, and each node 218 comprises that the light emitting diode of himself special use is used for its independent illumination.In the course of the work, discharging the light time by light emitting diode 214, light is incident on the side of light distributing panel 212 at node 218 places.Node 218 is redirected light and propagate into from its side the upper surface of node 218.In order to prevent that light from oozing out between adjacent node 218, each node 218 can optically be separated by the reflector space or the shaded areas that are arranged in therebetween.
Each node 218 can be formed by the solid slug of material, perhaps also can be formed by elements combination.In one embodiment, each node 218 is formed by printing opacity or semi-transparent plastics embolus, and described embolus forms light distributing panel 212 with other embolus combinations the time.In another kind of embodiment, each node 218 is formed by fibre bundle.
The configuration of node 218 can be based on polar coordinate system or rectangular coordinate system (or certain other coordinate systems).For shape, can use the Any shape that for example comprises standard shape, as circle, square, rectangle, triangle.For size, node 218 can be greater than finger or stylus, with finger or stylus same size is arranged substantially, perhaps less than finger or stylus.In one embodiment, node 218 is configured to similar to the electrode 205 of electrode layer 204, that is, node 218 has layout, number, the size and dimension identical substantially with electrode 205.In another kind of embodiment, node is set to difference.For example, node 218 can have and compares different layouts, different number, different shape and/or different sizes with electrode 205.
In an illustrated embodiment, touch pad 200 is circular, and node 218 is implemented with different angle direction fragment (for example pie) form.Can use the angle direction fragment of any number.Number generally depends on the required resolution of illumination surface.In this specific embodiment, the resolution of tabula rasa 202 is lower, so each angle direction fragment has covered a plurality of sensing electrodes 205.
In one embodiment, all LED 214 are switched on simultaneously to produce the touch pad 200 of illumination fully.This can be similar to back lighting.In another kind of embodiment, change according to the electric capacity of measuring by each electrode 205 and to come 214 energisings LED.For example, the fragment of top, detected zone can be illuminated, and the fragment of not detected top, zone can be turned off.This provides prompting about its physical location on touch-surface to the user.In another embodiment, can throw light on to promote that the user is placed on its finger in the specific region of touch pad to selected fragment.
Although only show single tabula rasa 202, should be understood that this is not restrictive, also can use additional tabula rasa.For example, can also below above-mentioned first tabula rasa, arrange one or more tabula rasas again.In one embodiment, a kind of different color that is configured to distribute of each tabula rasa in the tabula rasa group.For example, can use and comprise redness, green and three blue tabula rasas.In this configuration, can produce the fragment of different color.By controlling its intensity, can produce (blending) almost any color at the touch-surface place.In another kind of embodiment, each tabula rasa in the tabula rasa group can have different directions.For example, the node of the angle direction fragment of light distributing panel can rotate with respect to another tabula rasa, makes them center on axis and is in diverse location place (for example partly overlapping and stagger at angle direction).Utilize this structure, can produce leading edge and back edge (leadingand trailing) illumination.
Fig. 8 A and Fig. 8 B are according to an embodiment of the present, the synoptic diagram of illuminated touchpad 250.Touch pad 250 is to comprise tabula rasa 252, electrode 254 and PCB 256 with the touch pad 200 similar parts shown in Fig. 7 A and Fig. 7 B.The touch pad difference is shown in it and Fig. 7 A and Fig. 7 B, and except the side-mounted LED 260 of outside, tabula rasa 252 also comprises inner side-mounted LED258.The light distributing panel 262 that touch pad difference shown in it and Fig. 7 A and Fig. 7 B also is tabula rasa 252 is right with being divided into the node of radial location along each node of angle direction branch fragment among Fig. 7, and described node is to comprising the interior side gusset 264 and the outer side gusset 266 of cooperating with LED 258 and 260 respectively.Thus, each node 264 and 266 had both been represented the angle direction position in the plane of touch pad 250, had represented radial position wherein again.This is particularly suitable in having round-shaped touch pad.In addition, different with the touch pad shown in Fig. 7 A and Fig. 7 B, touch pad 250 also comprises mechanical button 268 at the center of touch pad 250.Mechanical button 268 can be by one or more center LED270 illuminations.
In such an embodiment, light distributing panel 262 and electrode layer 254 can have annular shape, produce the cavity in the center of touch pad 250.This cavity provides extra light emitting diode 258 and 270 and the space of mechanical button 268 has been set.As shown in the figure, inner LED258 is adjacent to arrange with the different interior side gusset 264 of light distributing panel 262 along the inside circumference of light distributing panel 262.In addition, external LED 260 is along the neighboring of light distributing panel 262, the layout adjacent with the different outer side gusset 266 of light distributing panel 262.
In addition, center LED 270 is arranged near the center of touch pad 250, printing opacity button cap 272 belows of mechanical button 270.Button cap 272 is stuck in diffusion label layer 274 with movable manner and is subjected between the switch 276 of spring load, and described switch 276 also is positioned near the center of touch pad 250.When button cap was subjected to pushing, it overcame the actuator movements of the switch 276 that is subjected to spring load, thereby produced button event.
In an illustrated embodiment, electrode layer 254, LED 258,260,270 and mechanical switch 276 all are attached to printed circuit board (PCB) 256, but and are coupled to the controller 280 that is positioned at PCB 256 back sides with mode of operation.In the course of the work, the signal that 280 pairs of electrode layers 254 of controller and switch 276 places produce monitors, and is provided for controlling LED258,260 and 270 order.
Fig. 9 A and Fig. 9 B are according to an embodiment of the present, the synoptic diagram of illuminated touchpad 300.Touch pad 300 is to comprise tabula rasa 302, electrode layer 304 and PCB 306 with the similar part of touch pad shown in Fig. 8 A and Fig. 8 B.Touch pad difference shown in it and Fig. 8 A and Fig. 8 B is that tabula rasa 302 except first group of inner LED 308, also comprises second group of inner LED 310; And except first group of external LED 312, also comprise second group of external LED 314.First group is positioned at second group of top, and can covers out each other to prevent leakage therebetween.
The touch pad difference of it and Fig. 8 A and Fig. 8 B is that also the light distributing panel 316 of tabula rasa 302 also will be divided into four nodes that are positioned at radially along each node of angle direction branch fragment, side gusset 318, inboard/intermediate node 320, the outside/intermediate node 322 and outer side gusset 324 in comprising, these nodes are cooperated with optical mode with their corresponding LED.Especially, first group of interior side gusset 318 that is oriented to throw light on of inboard LED 308, second group of inboard/intermediate node 320 that is oriented to throw light on of inboard LED 310, first group of outer side gusset 324 that is oriented to throw light on of outside LED 312, and second group of outside LED 314 is oriented to the outside/intermediate node 322 that throws light on.
For make light from second group of LED 310 to the inside/intermediate node 320 propagates the light part of propagation 326 that extend inboard/intermediate node 320 includable side gussets 318 belows.As a rule, light part of propagation 326 is optically separated with interior side gusset 318, make light through light part of propagation 326 time, can not leak in the side gusset 318.
For make light from second group of LED 314 laterally/intermediate node 322 propagates, the outside/intermediate node 322 can be included in the light part of propagation 328 of outer side gusset 324 belows extension.As a rule, light part of propagation 328 is optically separated with outer side gusset 324, make light through light part of propagation 328 time, can not leak into outside in the side gusset 324.Perhaps also can use light pipe.
Light distributing panel 316 can be implemented in every way.In one embodiment, light distributing panel 316 comprise around the step-like outside/middle light penetrating ring and be arranged in its top outside light penetrating ring and around step-like inboard/middle light penetrating ring and be arranged in its top inboard light penetrating ring.Shielding layer can be disposed between each ring in case the stopping leak leakage.
Although touch pad is described to have only four radial segment, should be noted that the radial segment that can use any number and the angle direction fragment of any number obtain required resolution.
Figure 10 is according to an embodiment of the present, the synoptic diagram of illuminated touchpad 350.Touch pad 350 comprises each layer, and these layers comprise diffuser layer 352, opaque electrode layer 354, PCB356 and tabula rasa 358.Tabula rasa 358 can be implemented with the form of the tabula rasa (for example Fig. 6 is described the sort of) that comprises the pixelation light source, also can implement with the form of the tabula rasa (for example Fig. 7 is described the sort of) that comprises light distributing panel and side-mounted light source.
Particularly, light diffusion body layer 352 is arranged in electrode layer 354 tops, and opaque electrode layer 354 is arranged in PCB 356 tops, and PCB 356 is arranged in tabula rasa 358 tops.For light diffusion body layer 352 is thrown light on, electrode layer 354 comprises one or more openings 360, and light can pass through described opening from tabula rasa 358 emissions the time.Opening 360 can be the gap that may form usually between the electrode that separates on the space, can be predetermined gap also, and the electrode that separates on the space is printed to and centers on described predetermined gap location when PCB356 goes up.In addition, can pass PCB 356 in order to make light, PCB 356 or formed by light transmissive material perhaps also comprises the one or more openings 362 corresponding with the opening 360 of electrode layer 354.In addition, tabula rasa 358 usually and opening 360/362 layout similarly makes each opening 360/362 comprise the independent light source 364 of tabula rasa 358.In the course of the work, pass PCB 356 and pass electrode layer 354 and advance, diffuser layer 352 or button cap 366 are thrown light on from the light of each light source 364 emissions.
Figure 11 is according to another kind of embodiment of the present invention, the synoptic diagram of operable tabula rasa 400 in the illuminated touchpad.This tabula rasa for example can be corresponding to above-mentioned any tabula rasa.Tabula rasa 400 comprises diffuser panels 402, one or more light combiner (multiplexer) 404 and controller.Diffuser panels 402 is configured to make light that diffusion takes place as mentioned above.But light combiner 404 is coupled to controller 406 with mode of operation and optically is communicated with diffuser panels 402, is configured to diffuser panels 402 be thrown light on controlled and mode pixelation by the order that comes self-controller 406.
Light combiner 404 comprises single light emitting devices 408 and has a plurality of light pipes 410 of corresponding photoswitch 412.Light pipe 410 for example can comprise one or more optical fiber, and light emitting devices 408 can be with many multi-form enforcements, and these forms for example comprise one or more independent LED, perhaps one or more led array.
First end of each light pipe 410 optically is connected to difference, node or the zone of diffuser panels 402.Therefore light pipe 410 can form the pixelated pattern in illuminated point, node or zone on light diffusion dignity plate 402.For example, the position of light pipe 410 can be based on rectangular coordinate system, polar coordinate system or certain other coordinate systems.Each light pipe 410 second opposite end optically is connected to different photoswitch 412.Therefore, photoswitch 412 is exclusively used in concrete lighting point, node or the zone of diffuser panels 402.In addition, photoswitch 412 all optically is communicated with light emitting devices 408.In some cases, light emitting devices 408 is crossed photoswitch 412 extensions.In other cases, light scioptics or the photoconduction 414 by light emitting devices 408 emissions focuses on each photoswitch 412.
In addition, photoswitch 412 and light emitting devices 408 also operationally are coupled to controller 406.In the course of the work, controller 406 is optionally controlled the light (for example color and intensity) by light emitting devices 408 emissions, optionally controls the opening and closing of photoswitch 412 simultaneously.Like this, can control the illumination that diffuser panels 420 places provide in the mode of pixelation with single light emitting devices 408.Can make the switch opens of any number or close at any particular point in time, so that required lighting pattern (open and close by making different photoswitches, can produce various patterns) to be provided.Lighted and when photoswitch opened, light can enter in the light pipe that is associated through photoswitch at light, described light pipe will be delivered to different lighting points, node or the zone of diffuser panels from the light of photoswitch.Lighted and photoswitch pent the time at light, light is blocked and can not enters light pipe, and therefore respective point, node or the location in diffuser panels do not provide illumination.
Should be noted that recombiner can comprise the switch of any number, tabula rasa can comprise the recombiner of any number, to obtain the required resolution of tabula rasa.
Figure 12 is according to an embodiment of the present, and illuminated touchpad is carried out method of operating 450.This method comprises square frame 452 and 454 at least.At square frame 452, detected object on the input surface of touch pad.This for example can realize by the electric capacity sensing device.At square frame 454, to the position of detected object near at least a portion on input surface throw light on.This can be realized by the tabula rasa that is arranged in above or below the touch pad.As a result, at any time object is positioned under the situation on perception plane and can informs the user.
In one embodiment, the input surface is divided into the field of illumination, and is illuminated with immediate that zone of detected object.For example, with reference to Figure 13 A, if the user is placed on its finger on the angle direction fragment of distributing panel, then this specific angle direction fragment is illuminated.If the user is placed on its finger on a plurality of fragments simultaneously, a kind of in two kinds of situations then may be taken place.In one embodiment, two fragments are all illuminated.In another embodiment, have only in these fragments one illuminated.In the latter case, can be that the fragment of having a mind to is judged to which fragment.
In another kind of embodiment, the input surface is divided into lighting nodes or point (pixelation), and it is illuminated to be comprised in those points detected object inside or that center on detected object.For example,, then adjacent and illuminated around the lighting point of finger position with finger position if the user is placed on its finger on the input surface with reference to Figure 14 A.In some cases, just adjacent those points (for example ring of light (halo)) of lighting point with finger.In other cases, lighting point is opened from the finger extension in the mode of for example star shape.
This method can also comprise square frame 456 and 458.At square frame 456, in identical, on the input surface, detect second object with first object.This for example can realize by multiple spot electric capacity sensing device.At square frame 458, to the position of detected second object near at least a portion on input surface throw light on.As a result, the situation that can at any time different a plurality of objects be positioned at the perception plane user that sends a notice.
In one embodiment, the input surface is divided into the field of illumination, and is illuminated with immediate those zones of the object that is detected.For example, in the time of on two fingers being placed on the input surface, two in these finger positions illumination fragments are thrown light on simultaneously with reference to Figure 13 B.
In another kind of embodiment, the input surface is divided into lighting nodes or point (pixelation), is included within the detected object or illuminated around those points of detected object.For example, in the time of on two fingers being placed on the input surface, thrown light in the zone around these two fingers simultaneously with reference to Figure 14 B.
Figure 15 is according to an embodiment of the present, and illuminated touchpad is carried out method of operating 500.Method 500 starts from square frame 502 substantially, carries out the object perception at this.This for example can realize by the capacitance touch sensing device.At square frame 504, when detecting object, at least a portion on input surface is illuminated.As a rule, the illuminated part on illuminated surface is to be arranged near the position of the object that is detected, and/or the regional area of below on every side.Illuminated part for example can be one or more lighting points, node or zone.As a rule, this part is similar to the size of object dimensionally.Under the situation of for example finger, illumination section can cover and the similar area of detected finger area.
At square frame 506, whether object is judged mobile.If object is not to move, then this method advances to square frame 508, at this whether object is still judged detected.If still detect this object, then this method is got back to square frame 504, at this same section of importing the surface is thrown light on.If object no longer is detected, then this method advances to square frame 510, in this lighting-off.This can take place after no longer being detected at once being judged to be object, and (for example time-out (time out)) also can take place one section incident after.In addition, can also use illuminating effect to come lighting-off such as fade out (fadingout).Subsequently, this method is returned square frame 502.
Then with reference to square frame 506, upward move if object is imported the surface, then this method advances to square frame 512, determines the motion of objects characteristic at this.Kinetic characteristic for example can comprise acceleration, direction etc.Subsequently, at square frame 514, regulate photocurrent versus light intensity according to one or more kinetic characteristics.After square frame 514, this method is returned square frame 506.
In one embodiment, square frame 514 comprises according to the position of mobile object and comes the portable lighting zone.That is, when pointing when the input near surface moves, illuminated part is followed finger (i.e. object motion is being followed in illumination).As a result, where the user always is positioned at respect to the input surface up to object.In some cases, square frame 514 can also comprise according to mobile motion of objects characteristic (for example acceleration, direction etc.), provides direction identifier near illuminated part, to show that object before this and/or position in the future.
Figure 16 A-16D illustrates a kind of embodiment, and wherein, along with finger moves from the teeth outwards, illuminated part is followed finger motion.In this example, illuminated fragment is configured to move from the teeth outwards and follow finger motion along with finger.Figure 16 A illustrates the state when not detecting object.Figure 16 B illustrates the state when detecting object, and the fragment of this object below is illuminated.Figure 16 C illustrates the state that illuminated fragment is being followed the finger of motion.Figure 16 D illustrates a kind of embodiment, and wherein, illuminated fragment also comprises the leading edge that shows direction of motion, shows the main body of pointing current location and show and point the back edge of whereabouts once.
Leading edge, main body and back edge can have different illumination profile.For example, leading edge can have high intensity level, and main body can have the medium tenacity level, and back edge can have low intensity level.Perhaps, leading edge can have low intensity level, and main body can have high intensity level, and back edge can have low intensity level.Alternatively or additionally, the color of these ingredients also can be different.For example, leading edge can be red, and main body can be orange and back edge can be yellow.In addition, back edge can also comprise the illumination afterbody.For example, back edge can be become from higher intensity levels to the zone (for example fading out gradually from main body) that changes than low intensity level by minute fragment.
Figure 17 A-17D illustrates another kind of embodiment, and wherein, along with finger moves from the teeth outwards, illuminated part is followed finger motion.In this example, regional illuminated around the finger, and be configured to along with finger is mobile from the teeth outwards and follow finger motion.Figure 17 A illustrates the state when not detecting object.Figure 17 B illustrates the state when detecting object, regional illuminated (for example ring of light) around the object.Figure 17 C illustrates the state that mobile finger is followed in illuminated zone.Figure 17 D illustrates a kind of embodiment, and wherein, illuminated zone comprises main body and afterbody (for example comet formation).Main body is come around finger with illumination, and afterbody is tapered into point-like from main body.Therefore, afterbody has shown object position before this.Afterbody has the strength level lower than main body usually.The intensity of afterbody even can be from higher intensity levels to changing than low intensity level, for example on its length direction or from its core to edge variation.
Figure 18 is according to an embodiment of the present, and illuminated touchpad is carried out method of operating 550.Method 550 starts from square frame 552 usually, carries out the object perception at this.At square frame 554, determine the state of touch pad.Described state for example can be selected from: selection mode, tracking mode or gesture state.In selection mode, touch pad is set to receive the selection input (for example moving as button) from the user.In tracking mode, touch pad is set to along with finger moves and follows the tracks of finger at the input near surface.In the gesture state, touch pad is set to receive the various gesture inputs from the user.
At square frame 556, thrown light on based on the state of touch pad in input surface.As a result, the user is apprised of the current state of touch pad, and therefore learns the input type that can carry out.For example, each state can comprise different illumination profile.The photocurrent versus light intensity of the illumination that will provide is provided illumination profile.Photocurrent versus light intensity for example comprises intensity and/or color and/or illuminating effect (for example thin out, flicker, scanning (rastering) etc.).In a kind of example, first state comprises first illumination profile (for example first color), and second state comprises second illumination profile (for example second color), and the third state comprises the 3rd illumination profile (for example the 3rd color).
With reference to Figure 19 A, a kind of example of decision state will be described below.In square frame 570 and 574, one or more objects are detected.At square frame 572, if detect single object, be placed in tracking mode at touch pad, make object motion be used to carry out and follow the tracks of operation.At square frame 576, if detect a plurality of objects, then touch pad is placed in the gesture state, makes object motion be used to carry out gesture operation.For example with reference to Figure 20 A and Figure 20 B, when detecting a finger, touch pad is placed in first state, and when detecting a plurality of finger, touch pad is placed in second state.
With reference to Figure 19 B, a kind of example of throwing light on based on state will be described below.In square frame 580 and 582, it still is that the gesture state is judged that touch pad is in tracking mode.At square frame 584,, then touch pad is thrown light on first illumination profile if touch pad is in tracking mode.At square frame 586,, then touch pad is thrown light on second illumination profile that is different from first illumination profile if touch pad is in the gesture state.Illumination profile comprises illumination information, for example color, intensity and effect (for example flicker, thin out etc.).For example, when touch pad is in first state, touch pad is thrown light on first color or intensity with reference to Figure 20 A and Figure 20 B; And when touch pad is in second state, with second color or intensity touch pad is thrown light on.
In one embodiment, the method that changes illumination based on the state of touch pad can also further develop.For example, this method can comprise: catch first and touch image; Touch image based on first and determine touch mode; And based on first touch mode touch-surface that throws light on.This method can also comprise: catch second and touch image; Touch image based on second and determine touch mode; Judge whether touch mode between the single touch image and the second touch image change has taken place; If touch mode keeps becoming, then touch with first that image compares with the second touch image and relatively come execution control function based on this; And, if change has taken place in touch mode, then based on second touch mode touch-surface that throws light on.This method can also comprise extraly: catch the touch image of winning the third place; Touch image based on the 3rd and determine touch mode; Judge whether touch mode between the second touch image and the 3rd touch image change has taken place; If touch mode keeps becoming, then touch with second that image compares with the 3rd touch image and relatively come execution control function based on this; And, if change has taken place in touch mode, then based on the 3rd touch mode touch-surface that throws light on.
Figure 21 is according to an embodiment of the present, and illuminated touchpad is carried out method of operating 600.This method generally starts from square frame 602, at this detected object.At square frame 604, when detecting object, at least a portion of importing the surface is thrown light on.At square frame 606, determine the z characteristic of object.The z characteristic just can comprise by object and is applied to the lip-deep pressure of input and/or object along the position (for example object near the degree on x-y plane) of z direction with respect to x-y input surface.At square frame 608, color and/or the intensity that can regulate illumination based on z height or pressure.
For example with reference to Figure 22 A and Figure 22 B, when detecting object, can throw light on to whole touch pad, can during more near touch-surface or when having applied bigger pressure the intensity of illumination be increased at object, and when object has applied littler pressure during further from touch-surface or with respect to touch-surface, the intensity of illumination be reduced with respect to touch-surface.Perhaps, part that can the illuminated touchpad fragment or the zone of finger direct neighbor (for example with), and can during more near touch-surface or when having applied bigger pressure the intensity of illumination be increased, and when object has applied littler pressure during further from touch-surface or with respect to touch-surface, the intensity of illumination be reduced at object with respect to touch-surface.
Figure 23 is according to an embodiment of the present, and illuminated touchpad is carried out method of operating 700.This method generally starts from square frame 702, carries out the object perception at this.At square frame 704, in response to perceived object, at least a portion on input surface is thrown light on.For example, near fragment or the zone the finger can be illuminated.At square frame 706, on the input surface, detect rotation user input subsequently.For example, under the situation of circular touchpad, rotation user input can be that the user is spiraled its finger around circular touchpad.In some cases, this can comprise and determines and rotate the user and import relevant accekeration.At square frame 708, import to throw light on to importing the surface according to the rotation user.For example, along with the user is rotated its finger around circular touchpad, the touch pad area of finger below is illuminated.In some cases, this can comprise at least to move between illumination fragment, node or point based on accekeration, thereby indicate the acceleration degree by accekeration, described acceleration degree moves used speed with realization between these illumination fragments, node or point and is associated.
Figure 24 is according to an embodiment of the present, and illuminated touchpad is carried out method of operating 800.This method generally starts from square frame 802, at this, when with first illumination profile at least a portion of importing the surface being thrown light on when the input near surface detects object.After square frame 802, this method advances to square frame 804, and at this, when object moved, the illumination of the illumination section on input surface changed.For example, can make the Strength Changes of illumination based on the acceleration of mobile object.For example, intensity can increase and increase along with acceleration, and intensity also can be along with acceleration reduces and reduces.In another kind of embodiment, use threshold value.For example, can use first strength level, use second strength level for low acceleration, and do not had the situation of acceleration (static) to use the 3rd intensity level to higher accelerations.
For example with reference to Figure 25, more low intensive illumination is provided when detecting object for the first time, provide the illumination of medium tenacity around importing when (for example low acceleration) slowly moved on the surface at object, and high-intensity illumination is provided when object centers on the surperficial fast moving of input (for example high acceleration).Perhaps, also can intensity be changed continuously.
Although described the present invention, also exist and drop on substituting in the scope of the invention, rearrangement and equivalents in the mode of some preferred embodiments.
For example, although the present invention is primarily aimed at touch pad, should be pointed out that this is not restrictive, the present invention also can be applied to other and touch sensing device, for example the holder wrist of the housing of touch-sensitive and touch-sensitive (palm rest).
Shall also be noted that multiple alternative implements method and apparatus of the present invention.
For example, can come the zones of different of touch pad is thrown light on different illumination profile simultaneously.For example, the quadrant that touch pad can be become to be thrown light on by minute fragment, these quadrants are corresponding to the push button function of touch pad (for example menu, broadcast/suspend, move forward and backward).
In addition, touch pad can be used as the indicator of hand-held computing device (for example media player).For example, touch pad can be configured to dimness when this device is in park mode (ebb in andout), perhaps changes from high strength to the low-intensity based on battery levels.
In addition, touch pad can also be used as timer or clock.Under the situation of timer, touch pad can comprise the fragment corresponding with the clock position, and these fragments can be subjected to illumination to show current event with controlled manner.For example, in order to represent 12:30, can be with the fragment of 12 of first illumination profile illuminations, and with throw light on 6 fragment of second illumination profile.Under the situation of timer, touch pad can be used for also surplus how many incidents of display media player clauses and subclauses (for example song).For example, when song begins, can throw light on, and can continuous fragments be turn-offed along with the broadcast of song to whole touch pad.When song finished, touch pad was no longer thrown light on.Perhaps, can open continuous fragments along with the broadcast of song, up to song finish and touch pad by till the illumination fully.This can help media player (for example music player).
In addition, the illumination of touch pad can further be controlled by sensor (for example optical sensor).The level of optical sensor measure ambient light, and make illumination intensity adjusted based on the level of surround lighting.
Therefore will be understood that, claims should be interpreted as having comprised drop in the real spirit and scope of the present invention that all such substitute, rearrangement and equivalents.

Claims (47)

  1. One kind the illumination input media, described illumination input media comprises:
    Object perception mechanism, it can perception import lip-deep user's input; With
    Visual feedback system, it is configured to import the described input surface of throwing light on relatively with the user.
  2. 2. input media according to claim 1, also comprise controller, described controller operationally is coupled to described object perception mechanism and described visual feedback system, described controller monitors that to the signal that described object perception mechanism place produces described controller optionally is provided by the illumination that is provided by described visual feedback system.
  3. 3. input media according to claim 1, wherein, described object perception mechanism comprises touch panel, touch in the regional area on can the perception described input of described touch panel surface, wherein, described visual feedback system comprises tabula rasa, and described tabula rasa can be launched light in the regional area on described input surface.
  4. 4. input media according to claim 3, wherein, described touch panel is an optical transmission, wherein, the described touch panel of optical transmission is arranged in described tabula rasa top.
  5. 5. input media according to claim 4, wherein, the described touch panel of optical transmission is a touch-screen.
  6. 6. input media according to claim 5, wherein, described tabula rasa comprises a plurality of light sources and light distributing panel, described smooth distributing panel is used for the light from described light source is assigned to the regional area on described input surface.
  7. 7. input media according to claim 5, wherein, described tabula rasa comprises the pixelation luminous point that scatters along on described input surface.
  8. 8. input media according to claim 3, wherein, described touch panel is arranged in the below of described tabula rasa, and the perception to touching can take place through described tabula rasa in described tabula rasa.
  9. 9. input media according to claim 8, wherein, described touch panel comprises the electrode that is positioned at a plurality of apart on the printed circuit board (PCB).
  10. 10. input media according to claim 9, wherein, described tabula rasa comprises the pixelation luminous point that scatters along described input surface.
  11. 11. input media according to claim 9, wherein, described tabula rasa comprises a plurality of light sources and light distributing panel, and described smooth distributing panel is used for the light from described light source is assigned to the regional area on described input surface.
  12. 12. input media according to claim 11, wherein, described tabula rasa comprises a plurality of side-mounted light sources and light distributing panel, described smooth distributing panel is used for the light from described side-mounted light source is assigned to the regional area on described input surface, described side-mounted light source is centered on the side arrangement of described smooth distributing panel and is arranged to photoconduction in the different piece of described smooth distributing panel, and described smooth distributing panel is configured to light-redirecting incident thereon to described input surface.
  13. 13. input media according to claim 12, wherein, described smooth distributing panel is divided into a plurality of nodes, and each node comprises himself side-mounted light source.
  14. 14. input media according to claim 13, wherein, described smooth distributing panel is circular, and wherein, described node is realized with angle direction and independent segments form radially.
  15. 15. input media according to claim 3, wherein, described tabula rasa comprises:
    Diffuser panels, it is arranged to make light diffusion;
    One or more light combiner, it is arranged to the controlled manner described diffuser panels of throwing light on; With
    Controller, it operationally is coupled to described one or more light combiner.
  16. 16. input media according to claim 3, wherein, described touch panel is based on electric capacity.
  17. 17. input media according to claim 3 also comprises the light diffusion body, described light diffusion body is arranged to make the light diffusion by described tabula rasa emission.
  18. 18. input media according to claim 1 also comprises lighting button, described lighting button is positioned at the center on described input surface.
  19. 19. one kind is carried out method of operating to input media, comprising:
    Lip-deep object is imported in perception; And
    When perceiving object, at least a portion on described input surface is thrown light on.
  20. 20. method according to claim 19 wherein, is thrown light near the surperficial regional area of described input in position of described object.
  21. 21. method according to claim 20, wherein, described regional area is the branch fragment zone on described input surface, and the described minute fragment zone of being thrown light on is the branch fragment zone of approaching described object.
  22. 22. method according to claim 20, wherein, described regional area is the set of having surrounded the lighting point of described object at least.
  23. 23. method according to claim 20 also comprises:
    Perception second object on the described input surface identical with first object;
    Near the second surperficial regional area of described input in position of described second object is thrown light on, and described first regional area and described second regional area are thrown light on simultaneously.
  24. 24. method according to claim 20 also comprises:
    Judge whether described object just moves along described input surface;
    Judge mobile motion of objects characteristic; And
    Regulate described illumination based on one or more kinetic characteristics.
  25. 25. method according to claim 25, wherein, described regional area moves according to described mobile object.
  26. 26. method according to claim 25 also comprises the indicator that provides relevant with described kinetic characteristic.
  27. 27. method according to claim 25, wherein, described indicator comprises trafficator.
  28. 28. method according to claim 25, wherein, described regional area comprises leading edge, main body and back edge.
  29. 29. method according to claim 25, wherein, described regional area comprises main body and afterbody.
  30. 30. method according to claim 20 also comprises:
    Detect the lip-deep rotation of described input user input; With
    Import according to described rotation user and to rotate described regional area.
  31. 31. method according to claim 19 also comprises:
    When object is no longer perceived, stop described illumination.
  32. 32. method according to claim 19 also comprises:
    If perceived described object is static, then provide first illumination;
    If perceived described object, then provides second illumination in motion; With
    If described object is no longer perceived, predetermined amount of time is kept with described illumination in then in the end perceived position.
  33. 33. method according to claim 19 also comprises:
    Judge the z characteristic of described object; With
    Regulate described illumination based on described z characteristic.
  34. 34. method according to claim 33 wherein, increases towards the surperficial intensity of described illumination that makes when mobile of described input at described object, and wherein, the intensity of described illumination is reduced away from described input is surperficial when mobile at described object.
  35. 35. method according to claim 19, wherein, thrown light in whole described input surface.
  36. 36. one kind is carried out method of operating to input media, comprising:
    Detect the lip-deep user's input of input;
    Import the input state of judging described input media based on described user;
    Based on the input state of the described input media described input surface of throwing light on, each input state has different illumination profile.
  37. 37. method according to claim 36, wherein, described judgement comprises: follow the tracks of or the characteristic of gesture comes described user's input is analyzed at expression, and with described user's input category for following the tracks of the input of input or gesture.
  38. 38. method according to claim 36 wherein, makes described input media be placed in tracking mode when detecting single object, and wherein, makes described input media be placed in the gesture state when detecting a plurality of object.
  39. 39. according to the described method of claim 38, wherein, when being placed in described tracking mode, described input media described input media is thrown light on first illumination profile, and wherein, when being placed in described gesture state, described input media described input media is thrown light on second illumination profile.
  40. 40. method according to claim 36, wherein, thrown light in whole described input surface.
  41. 41. method according to claim 36, wherein, only thrown light at regional area in described input surface.
  42. 42. one kind is carried out method of operating to input media, comprising:
    When on the input surface, detecting object at least a portion on described input surface is thrown light on; With
    When described object is mobile on described input surface, regulate described illumination.
  43. 43. according to the described method of claim 42, wherein, described illumination changes according to the acceleration of described object.
  44. 44. according to the described method of claim 43, wherein, illumination intensity increases under the situation that acceleration increases, and wherein, illumination intensity reduces under the situation that acceleration reduces.
  45. 45., wherein, use first strength level for high acceleration according to the described method of claim 43, use second strength level for low acceleration, use the 3rd intensity level for no acceleration.
  46. 46. according to the described method of claim 42, wherein, thrown light in whole described input surface.
  47. 47. according to the described method of claim 42, wherein, only thrown light at regional area in described input surface.
CNA2006800536309A 2005-12-30 2006-11-28 Illuminated touchpad Pending CN101395562A (en)

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