CN103399673B - Contact felt pen and supporting touch-screen system thereof - Google Patents

Abstract

Optical touch screen system and optical touch screen system source and felt pen, relate to touch-screen system field, is specifically related to a kind of optical touch screen systems.Optical touch screen system, including touch pad, signal processing system, also includes that light-sensitive element group, light-sensitive element group include a plurality of light-sensitive element, and a plurality of light-sensitive elements connect signal processing system.Optical touch screen system source, including a light source, the more uniform outer surface that is radiated at of light that light source produces has on the touch pad of transparent medium, and transmission outside touch pad.Contact felt pen, including switch and light-emitting component, the luminous situation of on-off control light-emitting component.Remote touch pen includes laser instrument, power supply, also includes that one is easy to hand-held shell, and described laser instrument, power supply are arranged in the enclosure, are provided with switch between described laser instrument and described power supply, and described switch is arranged on the housing.Capacity of resisting disturbance is strong, be not afraid of greasy dirt, it is adaptable to the occasion that the greasy dirt such as factory floor, mining area is heavier.The conversion between remote touch pattern and contact touch mode can be realized easily.

Description

Contact felt pen and supporting touch-screen system thereof

The filing date of the original application of this divisional application: on August 17th, 2009, Application No.: 2009101663237, name It is referred to as: optical touch screen and optical touch screen light source and felt pen.

Technical field

The present invention relates to touch-screen system field, be specifically related to a kind of optical touch screen systems.

Background technology

The existing touch-screen system utilizing optical characteristics to make mainly has two kinds, and one is Infrared touch screen systems；One Planting is the touch-screen system being called electronic laser blank being mainly used in projector, utilizes laser tracking technology surface sweeping felt pen Mark.

Existing Infrared touch screen systems, is provided with the red of optical receiver component including correlation type infrared touch screen system and the back side Outer touch-screen system.Infrared touch screen systems, relative to other touch-screen systems, has that stable performance, capacity of resisting disturbance be strong, the longevity The series of advantages such as life is long, precision is high.Almost with overwhelming advantage, gradually capture the market of other touch-screen systems.

But Infrared touch screen systems still has a fatefulue weakness to be difficult to overcome, it is simply that infrared window is afraid of dirty.Unclean Environment should not use, such as can not apply in the heavier occasion of the greasy dirt such as factory floor, mining area；Such as can not apply at train The public arena that Waiting Lounge, extramural cash dispenser etc. are open.Additionally infrared emission pipe to be filled outside screen, has influence on and finishes The compactedness of structure, on small-sized screen, inconvenience uses, as inconvenience is used on the screen of mobile phone and palm PC.Additionally infrared touch Screen system cost is the highest, and resolution is the most relatively low.

The main uses of electronic laser whiteboard system is to cooperate with projector and uses.Projecting apparatus screen both sides are respectively equipped with being used for sweeping Retouch the generating laser of projecting apparatus screen.After electronic laser blank starts, generating laser sends laser scanning projection's instrument screen Surface.The photosensitive pen supporting with it has the function of sensing laser, and such user uses photosensitive pen to operate on electronic whiteboard Time, generating laser can scan the position of photosensitive pen.The electronic laser whiteboard system same computer of positional information by photosensitive pen Interact.

Electronic laser whiteboard system structure is complex, so cost is the highest, general price is at 3000 yuan to 7000 yuan.Peace Debug examination difficulty, during installation, need professional that its laser scanning part is positioned, position inaccurate or in using slightly Micro-movement the most easily causes maloperation, even can cause and can not normally use, and therefore use occasion is very limited.

Comprehensive existing touch-screen system, as the most not occurring that a kind of sensitive paper is opened, can allow people lie prone The touch-screen system write above.People cannot obtain the original sensation write and convenience by touch-screen system.Existing tactile Touch that screen system yet suffers from poor anti jamming capability, resolution is low, be not easy to the shortcomings such as long-range control.

Summary of the invention

It is an object of the invention to provide a kind of optical touch screen system, the performance of touch-screen system can be effectively improved.

The present invention also aims to provide the felt pen with optical touch screen system support, described felt pen, including contact Formula felt pen and remote touch pen.Contact felt pen, coordinates optical touch screen system to carry out contact touch.Remote touch pen, Optical touch screen system is coordinated to realize remote touch.

The present invention is by the following technical solutions for achieving the above object:

Optical touch screen system, including touch pad, signal processing system, also includes light-sensitive element group, described light-sensitive element group Including a plurality of light-sensitive elements, a plurality of light-sensitive elements connect signal processing system, and the light-sensitive element in light-sensitive element group is with tactile Template is connected by light；

When using optical touch screen system, presenting a relevant luminous point on a touchpad, light-sensitive element is by from described light The irradiation of the light of point, is reflected as the signal of telecommunication being correlated with.

Presenting a relevant luminous point on a touchpad, light-sensitive element group is by irradiating, instead from the light of described luminous point Reflect the distance dependent for the relevant signal of telecommunication, the intensity of the described signal of telecommunication and light-sensitive element to described luminous point；Light-sensitive element produces The signal of telecommunication be sent to signal processing system, signal processing system by analyze a plurality of light-sensitive elements produce a plurality of telecommunications Number the information including intensity, it is thus achieved that described luminous point positional information on a touchpad.

It is also possible that described optical touch screen system includes that a plurality of light-sensitive element group, described light-sensitive element group front are provided with one Plus lens.By plus lens by light collection to the photosurface of described light-sensitive element group.Plus lens can be by luminous point Clearly as being presented on photosurface, it is also possible to simply being radiated at luminous point on photosurface through the light converged, it is not necessary to Imaging.

After have employed plus lens, the signal of telecommunication that described light-sensitive element group produces, with luminous point relative to described photosensitive unit The distance of part group is relevant with angle.Allow to be integrated in less space the light-sensitive element of light-sensitive element group, system can be reduced Make difficulty, and reduce cost.Additionally introduce the angular relationship between light-sensitive element group and luminous point, aid in determining whether the position of luminous point Put.

The signal of telecommunication that light-sensitive element produces is sent to signal processing system, and signal processing system is by analyzing light-sensitive element group The electrical signal information produced, it is thus achieved that described luminous point positional information on a touchpad.Signal processing system processes described photosensitive unit The signal of telecommunication produced in part group, can process the information with distance dependent in the signal of telecommunication, it is also possible to angle in the process signal of telecommunication Relevant information, it is also possible to integrated treatment.

Light-sensitive element group can be formed by a plurality of independent light-sensitive element sequential combination, it is also possible to by a plurality of photosensitive Element is integrated on an integrated package, it is also possible to directly use the imageing sensor being integrated with a large amount of light-sensitive element.

When described luminous point flashes with certain frequency, light-sensitive element will produce the vibration relevant to the optical signal frequency of luminous point The signal of telecommunication, the signal of telecommunication of vibration is easy to amplify, frequency-selecting, has a more preferable anti-interference, and the most described luminous point is selected with certain frequency The luminous point of rate flicker, signal processing system includes a frequency-selecting module corresponding with described smooth dot flicker rate.On a touchpad in Existing can be by the luminous point of optical touch screen system identification, it is believed that be the luminous point relevant to optical touch screen system.Generally phase The luminous point closed needs to meet, and flicker frequency is corresponding with the frequency-selecting module of optical touch screen system, the wavelength of light of luminous point and photosensitive unit The reception wavelength of part is corresponding.

Being not involved with the requirement to touch pad shape in technique scheme, the shape of touch pad is not particularly limited. Screen owing to currently using is mostly the screen of tetragon, and the touch pad referring to tetragon is explained.

Signal processing system in the present invention, can be by comparing luminous point to the range difference of light-sensitive element in light-sensitive element group Value relation obtains the position of described luminous point, the optical signal from described luminous point that the difference of distance is received by each light-sensitive element The difference of intensity is reflected.Touch pad for plane, it is only necessary to the light-sensitive element of two row's cross arrangements both can determine that luminous point Position.The light-sensitive element that one row is transversely arranged, the relevant signal of telecommunication difference relationship produced by each light-sensitive element, determine light The lateral coordinates of point；The light-sensitive element of one row's longitudinal arrangement, the relevant signal of telecommunication difference relationship produced by each light-sensitive element, Determine the longitudinal coordinate of luminous point, so that it is determined that the position that luminous point is on a touchpad.Described " light-sensitive element in light-sensitive element group with Touch pad is connected by light " refer to that, in the light of touch pad, at least Ray Of Light is through light-sensitive element.Light-sensitive element group In light-sensitive element need not be all connected by light with touch pad, but at least two light-sensitive elements and touch pad pass through light Connect.

Signal processing system in the present invention, it is also possible to obtained described by the angular relationship between luminous point and light-sensitive element group The position of luminous point.The present invention passes through plus lens by light collection to the photosurface of described light-sensitive element group.Angular relationship is led to Cross plus lens to be reflected the position that the optical signal of described luminous point converges in light-sensitive element group.Touch for plane Plate, two groups of light-sensitive element groups with plus lens may determine that the position of luminous point.One light-sensitive element group determine one with The polar coordinate that angle is relevant, two light-sensitive element groups determine two interlaced polar coordinate relevant with angle.By bag Include the information that two polar coordinate are determined, determine the position of luminous point.

When signal processing system obtains the position of described luminous point by the angular relationship between luminous point and light-sensitive element group, it is possible to It is analyzed with the difference relationship to the light signal strength on light-sensitive element in light-sensitive element group, to improve precision.

Touch pad can select the screen of display, as the screen of projecting display, liquid crystal display equipment screen, negative electrode show Show tube display (CRT) screen, the screen of light-emitting diode display, projecting apparatus screen；The transparent protection in screen front can also be selected Plate.

When touch pad is screen, the light-sensitive element in light-sensitive element group can be arranged on screen periphery.Screen is the screen of printing opacity During curtain, such as the screen of projecting display, owing to the light of luminous point can penetrate screen, the light-sensitive element in light light-sensitive element group Can be arranged on except being arranged in screen front, it is also possible to be arranged in screen rear；Screen be front be the screen of transparent medium During curtain, transparent medium such as glass, transparent plastics, the light of luminous point injection can be at transparent medium internal communication to transparent medium Around, therefore the light-sensitive element in light-sensitive element group is except being arranged in around screen front, it is also possible to be arranged in light transmission medium Around edge.

Light-sensitive element group can arrange plus lens, it is also possible to is not provided with.In the case of plus lens is set, corresponding Select, by the information including the angular relationship between luminous point and light-sensitive element group, it is thus achieved that at the signal of described light spot position Reason system.In the case of being not provided with plus lens, corresponding selection, by comparing luminous point to light-sensitive element in light-sensitive element group Distance difference relation obtain the signal processing system of position of described luminous point.Herein below emphasis is not provided with light-sensitive element group The situation of plus lens is attached most importance to and is told about.

When touch pad is transparent protective plate, the light of luminous point obviously can penetrate protective plate, so light-sensitive element group can To be arranged on the front of protective plate；Can also be arranged between screen and protective plate, i.e. after protective plate；Can also be arranged in Around protective plate edge.According to above-mentioned design structure, optical touch screen system can make polytype optical touch screen system.

The present invention divides according to mode of operation difference, including, optical touch screen system, the light of remote touch that contact touches touch Touch screen system.

One, the optical touch screen system that contact touches

The light source of described luminous point has three kinds of forms, and a kind of form is that optical touch screen system itself does not have a light source, extraneous with The device that the collocation of optical touch screen system uses has light source, the device of collocation such as contact felt pen, and this light source produces described light Point；A kind of form is that optical touch screen system itself has optical touch screen system source, and optical touch screen system source has light source, should Light source is the light source of described luminous point；A kind of form is that optical touch screen system itself has optical touch screen system source, extraneous and light The device of touch-screen system collocation also has light source, and the light source of described luminous point is any one light source therein.

(1) optical touch screen system itself does not have a light source:

Need the extraneous device used with the collocation of optical touch screen system and optical touch screen system with the use of, the device of collocation Such as contact felt pen.

Contact felt pen is luminous when contacting with optical touch pad, forms a luminous point on a touchpad, and luminous point is with contact The movement of felt pen and move, thus realize contact felt pen by the luminous point of movement and the touch of optical touch screen system grasped Make.

Contact felt pen, it is characterised in that include a shell, power supply, switch and light-emitting component, on-off control light-emitting component Luminous situation；Switch is connected with the touch end of contact felt pen, touches end and triggers switch, luminous unit when touching touch pad Part is luminous, forms luminous point on a touchpad.

The signal generating module producing electric oscillation signal can be accessed between power supply and light-emitting component, make light-emitting component produce and dodge Bright optical signal.

Touch pad Application Range is relatively wide, as the screen of projecting display, liquid crystal display equipment screen, negative electrode display tube show Device (CRT) screen, the screen of light-emitting diode display, projecting apparatus screen；The transparent protective plate in various screen front can also be selected.

When touch pad is screen, in light-sensitive element group, light-sensitive element is arranged in screen periphery.Screen is the screen with light transmission During curtain, such as the screen of projecting display, owing to luminous point can penetrate screen, in light-sensitive element group, light-sensitive element is except arranging Side before screen, it is also possible to be arranged in screen rear；When screen is the screen that front is transparent medium, transparent medium such as glass, Transparent plastics, the light of luminous point injection can be at transparent medium internal communication to transparent medium periphery, therefore light-sensitive element group Middle light-sensitive element is except being arranged in screen front, it is also possible to be arranged in around transparent medium edge, it is also possible to be embedded in transparent Media interior.

When touch pad is transparent protective plate, the light of luminous point obviously can penetrate protective plate, so light-sensitive element group can To be arranged on the front of protective plate, and it is arranged in around protective plate；Can also be arranged between screen and protective plate, i.e. protective plate After, it is arranged in around protective plate；Can also be arranged in around protective plate edge；It is also embedded within inside transparent medium.

(2) optical touch screen system itself has an optical touch screen system source:

Optical touch screen system also includes an optical touch screen system source, described in there is light source.Touch pad front portion is transparent Jie Matter, the more uniform outer surface that is radiated at of light that described light source produces has on the touch pad of transparent medium, and outside touch pad Transmission.

Light is derived from the more uniform irradiation in the touch pad back side or side on a touchpad, and more uniform outside touch pad Penetrate；Use a touch part contact touch pad, touch the part the irradiating of light by light source, form luminous point.Described touch part refers to touch Touch the object of touch pad, can be finger, pen etc..

Luminous point moves, by the movement of luminous point, the presence or absence of luminous point and the flicker frequency of luminous point with the movement touching part The part touch operation to optical touch screen system is touched Deng information realization.

Touch pad can be selected for the protective plate of screen transparent front, it is also possible to selects screen.If selection screen, then need screen Front is transparent medium, as can be selected for liquid crystal display equipment screen, negative electrode display tube display (CRT) screen.

With protective plate as touch pad:

Being provided with strip-shaped light source in the horizontal side of the close screen side of protective plate, it is photosensitive that another horizontal side is provided with a row Element composition light-sensitive element group, the light of strip-shaped light source pass through protective plate, direction of illumination be corresponding thereto another horizontal one Side, and slight oblique protective plate front；Being provided with strip-shaped light source in longitudinal side of the close screen side of protective plate, another is longitudinally Side is provided with the light-sensitive element group of row's light-sensitive element composition, and the light of strip-shaped light source passes through protective plate, and direction of illumination is and it Another relative longitudinal side, and slight oblique protective plate front.Because strip-shaped light source is slight oblique protective plate front, so Can there is the light being in total reflection state in protective plate, these light are also beneficial to uniform light.

Two row's light-sensitive elements connect one, obtain to the distance difference relation of light-sensitive element in light-sensitive element group by comparing luminous point Signal processing system to the position of described luminous point.The light-sensitive element group that above-mentioned two are made up of row's light-sensitive element is permissible Replace to be provided with the light-sensitive element group of plus lens, two light-sensitive element groups being provided with plus lens connect through include luminous point with Angular relationship between light-sensitive element group is in interior information, it is thus achieved that the signal processing system of described light spot position.Two are provided with convergence The light-sensitive element group of lens, it is easy to be arranged on the corner of protective plate, can effectively reduce blind area.

Described strip-shaped light source, can be the light source of the strip being arranged in by multiple little sub-light sources, it is also possible to include one The luminous body of shape.

When touching part and touch touch pad, the light that light-sensitive element receives is more weak, the light intensity on touch pad More uniform, there is not luminous point；When touching touch pad with touch part, light forms luminous point on a touchpad.Luminous point with Touch the movement of part and move, thus by the movement of luminous point, the information such as presence or absence of luminous point, it is achieved touch part is to optical touch screen system The touch operation of system.

Touch part is formed when contacting with touch pad luminous point principle illustrate, and proof is provided:

Touch part from touch pad farther out time, touch pad in the light appeared, only a small amount of light is radiated on touch part, Only have the most again small part light to be reflected back touch pad again, and the light being reflected back is not concentrated, it is impossible to forming luminous point, light touches Screen system is not responding to.Touch light when part contacts with touch pad and can not penetrate touch pad, directly contact with touch pad at touch part Place forms luminous point.The present invention obtains the position of described luminous point by comparing luminous point to the distance of each light-sensitive element in light-sensitive element group Put, even if the area of luminous point nor affects on more greatly the determination to its position of the optical touch screen system.

The correctness of above-mentioned principle is proved: dark night, brighter at light with a simple experimental test The things of the most invisible outside surface of glass window in room, the glass of windowpane is as minute surface.Assume there is a people outside glass window, He from windowpane farther out time, even if the light that windowpane appears can be irradiated to this people, we cannot see him, this prove It is little that the light of windowpane injection reflects.When nose is pressed on glass by he, we can be appreciated that his nose is the brightest, Form a luminous point, other position of face with glasses interval from increase the most dimmed.

Above-mentioned simple experimental test is contrasted with the present invention: make strip-shaped light source generation have and necessarily flash frequency The optical signal of rate, the frequency-selecting module of signal processing system is only chosen the signal of telecommunication relevant to strip-shaped light source flicker frequency, i.e. light and is touched Touching the light that screen system only identifies that strip-shaped light source produces, relative to optical touch screen system, the outside of touch pad is dark, with upper The condition stated in experimental test is all consistent.Therefore can be to touch part analogy nose, the glass of touch pad analogy windowpane Glass, light-sensitive element analogy eyes, this proves to touch when part touches touch pad and can form a luminous point.

Plural number bar strip-shaped light source, simultaneously during injection light, the light of touch pad injection is difficult to uniformly, it is possible to it is right to have influence on The determination of light spot position.

Can so solve light and be difficult to uniform problem, the optical signal of a strip-shaped light source injection, corresponding Light-sensitive element is converted into the corresponding signal of telecommunication and is sent to signal processing system, signal processing system using this corresponding signal of telecommunication as Obtain described luminous point location dependent information on a touchpad.The light-sensitive element corresponding with other strip-shaped light sources can not be by this The optical signal of strip-shaped light source injection is sent to signal processing system, or the light-sensitive element corresponding with other strip-shaped light sources can be by this Article one, the optical signal of strip-shaped light source injection is sent to signal processing system, but this corresponding signal of telecommunication is not made by signal processing system For obtaining described luminous point location dependent information on a touchpad.

Specifically can solve light in the following way and be difficult to uniform problem: described plural number bar strip-shaped light source is alternately lighted, When wherein a strip-shaped light source is not lighted, the signal of telecommunication of corresponding light-sensitive element group output is not received.Article one, strip During light source igniting, the signal of telecommunication of corresponding light-sensitive element group output is received by signal processing system and processes.The most each What light-sensitive element group received is all the light of a strip-shaped light source injection, and the light of a strip-shaped light source injection is easy to by all Even projection is on a touchpad.

Specifically can also solve light in the following way and be difficult to uniform problem: plural number bar strip-shaped light source, with each strip Light source is provided with light-sensitive element to deserved；Each strip-shaped light source is respectively provided with the flicker frequency that difference is bigger；Corresponding with each strip-shaped light source Each light-sensitive element connect the frequency-selecting module corresponding with this strip-shaped light source flicker frequency respectively.

(3) optical touch screen system itself has a light source, and extraneous and the collocation of optical touch screen system device also has a light source:

Optical touch screen system to be realized itself has light source, and extraneous and the collocation of optical touch screen system device also has light source Situation, with the collocation of optical touch screen system uses, there is light source as long as being equipped with to the optical touch screen system itself with light source Device, can have both of which simultaneously.Closing the light source of optical touch screen system itself, optical touch screen system is optical touch screen system System itself does not have the pattern of light source；Opening the light source of optical touch screen system itself, optical touch screen system is optical touch screen system Itself there is the pattern of light source.

Two, the optical touch screen system of remote touch

Need the device that uses with the collocation of the optical touch screen system of remote touch with the use of.The device that collocation uses, as Remote touch pen.

Remote touch pen includes laser instrument, power supply, also includes that one is easy to hand-held shell, and described laser instrument, power supply are arranged In the enclosure, being provided with switch between described laser instrument and described power supply, described switch is arranged on the housing.

Further, remote touch pen also includes a signal generating module, and power supply connects signal generating module, signal generation mould Block connecting laser, signal generating module produces the signal of telecommunication of vibration, and drives laser instrument to send the sudden strain of a muscle corresponding with the signal of telecommunication Bright laser signal.

Remote touch pen produces light beam, and this light beam forms a luminous point on a touchpad.Remote touch pen is by remotely control Luminous point processed, realizes corresponding remotely operation to optical touch screen system.

The optical touch screen system itself that the optical touch screen System Working Principle of remote touch and structure and contact touch is not The form with light source is essentially identical, and difference focuses on remote touch pen and can produce the light beam that a light intensity is stronger, from touching Template farther out time, luminous point can be formed on a touchpad.Therefore by remote touch pen being replaced by contact felt pen, permissible By system converting for the optical touch screen of the remote touch optical touch screen system touched for contact, vice versa.The light of remote touch Can convert easily between the optical touch screen system that touch-screen system and contact touch.

In the light-sensitive element group of remote touch, the setting of light-sensitive element is more free, before can being arranged on screen Side, it is also possible to be arranged on the front of protective plate.

Remote touch pen and contact felt pen, can be led to optical touch screen system by the optical signal of flicker Letter, arranges a coding lock system to optical touch screen system, sets to the signal generating module of contact felt pen and remote touch pen Put a supporting electron key system.Optical touch screen system is realized locking, prevents irrelevant personnel from operating.

As shown in the above, heretofore described optical touch screen system, during use not with optical touch screen system The electronic device contact of itself, so service life is long.Touch pad uses the original parts of display, is not take up space.Not only Achieve remote touch, it is also possible to realize the conversion between remote touch pattern and contact touch mode easily.The position of luminous point The determination put is the most relevant with the position of luminous point, unrelated with or without greasy dirt with on the power of luminous point light intensity, touch pad.So anti-interference energy Power is strong, be not afraid of greasy dirt, it is adaptable to the occasion that the greasy dirt such as factory floor, mining area is heavier.The optical touch screen system of remote touch with connect Can convert easily between the optical touch screen system that touch touches, and be easy to encryption.Allow to there is multiple luminous point, can To realize multi-touch function.

Accompanying drawing explanation

In Fig. 1, a is contact felt pen overall diagram, and b is contact felt pen electrical schematic diagram；

In Fig. 2, a is remote touch pen overall diagram, and b is remote touch pen electrical schematic diagram；

Fig. 3 is front view and the lateral plan of the remote touch pen of the fixed structure with a ring shape；

Fig. 4 is the lateral plan of the remote touch pen of the fixed structure with two ring shape；

Fig. 5 is the touch pad structure chart being provided with two row's light-sensitive elements in specific embodiment one；

Fig. 6 is light-filtering channels structure chart；

In Fig. 7, a is light-sensitive element and signal processing system annexation schematic diagram, and b divides for improve optical touch screen system The light-sensitive element of resolution and signal processing system annexation schematic diagram；

In Fig. 8, a is that lateral coordinates region divides schematic diagram, and b is the lateral coordinates that improve optical touch screen systemic resolution Region divides schematic diagram；

Fig. 9 is the schematic diagram of the coordinates regional of the square block that lateral coordinates region is surrendered with longitudinal coordinate region；

Figure 10 is the structural representation that light source is arranged on the touch pad back side；

Figure 11 is the structural representation that light source is arranged on touch pad side；

Figure 12 be touch pad area bigger time light-sensitive element arrangement schematic diagram；

Figure 13 is touch pad photosensitive unit when being the screen of the large screen back projection formula display being spliced to form by multiple the small screen Part arrangement schematic diagram；

Figure 14 is touch pad photosensitive arrangement of elements schematic diagram when being the screen of light-emitting diode display；

Figure 15 uses front to divide schematic diagram equipped with the coordinates regional of the light-sensitive element group of plus lens.

Detailed description of the invention

For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below knot Conjunction is specifically illustrating, and the present invention is expanded on further.

The optical touch screen system touched due to contact and the principles and structure of the optical touch screen system of remote touch Essentially identical, difference focuses on the generation type of described luminous point, and the mode forming luminous point includes being touched by contact The form of a stroke or a combination of strokes become luminous point, by remote touch pen formed luminous point, by touch part formed luminous point, described touch part be touch touch screen system The object of system, this object can not be luminous, can be finger, pen etc..

Select contact felt pen or described touch part to use with optical touch screen system support, or select remote touch pen Use with optical touch screen system support, largely can directly determine that this optical touch screen system is that the light that contact touches touches Touch the optical touch screen system of screen system or remote touch.

Contact felt pen, remote touch pen concrete structure as described below.

A and b in reference Fig. 1, contact felt pen, including a shell 101, power supply 102, switch 103 and light-emitting component 104, The signal generating module 105 of the signal of telecommunication that light-emitting component 104 is vibrated by generation connects power supply 102, the luminous unit of switch 103 control The luminous situation of part 104.Described light-emitting component 104 can be the light-emitting component launching visible ray, it is also possible to be that transmitting is invisible The light-emitting component of light.Power supply 102 can also be directly by switch 103 connection light-emitting component 104.

Light-emitting component 104 uses light emitting diode, light emitting diode to be positioned at the contact jaw of a shell 101 and touch pad, luminous Diode upper end props up the button of switch 103.

When using contact felt pen, light emitting diode touches touch pad, and light emitting diode is under pressure and triggers switch 103 Button, light-emitting component is luminous, forms luminous point on a touchpad.This luminous point is corresponding with switch 103 with signal generating module 105 Frequency scintillation.Switch 103 obviously can also is that the switch of pressure transducer form, or opens known to some other small size Close.

Contact felt pen can also set up modifier key, such as button 106.Signal generating module 105 is provided with and button 106 Corresponding frequency.Push button 106, when light emitting diode touches touch pad ON switch 103 light-emitting component 104 with button The frequency scintillation of 106 correspondences.Optical touch screen system can be to the optical response signal of this frequency scintillation for clicking on right mouse button merit Energy.In like manner, it is also possible to the button corresponding to left mouse button is set.

Contact felt pen obviously can be integrated with the radio function of existing laser pen, as real by radio function Now click on functions of mouse right key and lantern slide page-turning function.

The power supply 102 of contact felt pen can be charge power supply.Shell 101 is provided with charging inlet, it is simple to contact Felt pen charges.

Mobile phone, palm PC, handheld device, pen such as it is applied to when contact felt pen is applied to portable electric appts When remembering this computer etc., portable electric appts is provided with contact felt pen slot, is provided with charged electrical in contact felt pen slot Pole, time in contact felt pen insertion contact felt pen slot, described charging inlet docks with charging electrode, to charge power supply Charging.

Remote touch pen is used for producing light beam, and this light beam forms luminous point on a touchpad.Remote touch pen is by remotely control Luminous point processed, realizes corresponding remotely operation to optical touch screen system.With reference to a and b in Fig. 2, remote touch pen includes laser instrument 201, power supply 202, shell 203, shell 203 has switch sections 204, tool power supply 202 in shell 203, and power supply 202 connects letter Number occur module 205, signal generating module 205 connecting laser 201, signal generating module 205 produce vibration the signal of telecommunication, and Drive laser instrument 201 to send the laser signal of the flicker corresponding with the signal of telecommunication, and then in optical touch screen system, form flicker Luminous point.Laser instrument 201 can be the laser instrument launching visible ray, it is also possible to be the laser instrument launching black light.

Switch sections 204 is provided with multiple button, the unlike signal that each button produces corresponding to signal generating module 205, because of This remote touch pen can produce the multiple laser signal with different information.The power supply of remote touch pen can be charged electrical Source.

Another structure of remote touch pen, with reference to Fig. 3, laser instrument has two 301,302, and laser instrument 301 is launched visible Light, laser instrument 302 launches infrared ray, the light ray parallel that two laser instrument 301,302 send.Luminous ray is behaved provides vision anti- Feedback, Infrared has compared with the more preferable anti-interference of visible ray as signal vehicle.

Signal generating module can produce the multiple signal of telecommunication, with switch 303 by bonded, switch 303 has three by Key, each button is corresponding with a kind of signal of telecommunication.Every kind of signal of telecommunication drives laser instrument to produce corresponding laser signal.

There is on the shell 300 of felt pen the fixed structure 304 of ring shape.Can be solid by felt pen by fixed structure 304 It is scheduled on finger, produces the luminous point following finger movement.Felt pen can be worn on right hand forefinger, control button with thumb. Because people's ordinary practice uses right hand forefinger refer to thing and make a gesture.The forefinger of the right hand has good sense of direction, pistol Design is the most all utilizing this point.

Yet another structure of remote touch pen, with reference to Fig. 4, more comfortable in order to allow people use, shell is carried out Following change, shell is provided with the fixed structure 401,402 of two ring shape, by leading between two fixed structures 401,402 Line 403 connects, on fixed structure 401 equipped with launch ultrared laser instrument, on another fixed structure 402 equipped with switch 404, Power supply, signal generating module, signal amplification module.

Equipped with the fixed structure 401 of laser instrument during use, it is worn on forefinger, in being worn over equipped with the fixed structure 402 switched On finger, the direction of illumination of laser instrument is towards finger tip, and the button of switch 404 is towards thumb.With the button of thumb control switches 404, Laser instrument is to the direction injection laser that forefinger points to.The action of forefinger drives laser action, and then handles the action of luminous point.

Remote touch pen obviously can also be integrated with the radio function of existing laser pen, as real by radio function Now click on functions of mouse right key and lantern slide page-turning function.

For the present invention, the simple generation type according to luminous point, optical touch screen system is divided into the light that contact touches The optical touch screen system of touch-screen system and remote touch, it is simple to brief description, but be not easy to explain in detail.Main Dissimilar according to selected touch pad, and the allocation method that described light-sensitive element is on a touchpad carries out classifying in detail saying Solve.

Time in the present invention with protective plate for touch pad, the mounting means of described light-sensitive element has higher freedom, The producing method of luminous point also has the highest freedom, is first illustrated with protective plate for touch pad.Additionally in case Backplate is on the architecture basics of the optical touch screen system of touch pad and basis, can obtain easily with other objects be The optical touch screen system of touch pad.Optical touch screen system with other objects as touch pad, subsequently with protective plate as touch pad It is illustrated based on optical touch screen system.

Specific embodiment one, with the protective plate of printing opacity before screen as touch pad:

Herein below emphasis is not provided with the situation of plus lens with light-sensitive element group and attaches most importance to and tell about.For replacing to Be provided with the situation of the light-sensitive element group of plus lens, before told about, explain the most in detail.

Light-sensitive element group is arranged on around touch pad.Around touch pad, including the front, rear and the side that touch on edges of boards Face.Concrete, with reference to Fig. 5, the light-sensitive element group being arranged over the transversely arranged light-sensitive element composition of a row of touch pad 501 502, left is provided with the light-sensitive element group 503 of the light-sensitive element composition of row's longitudinal arrangement.Light-sensitive element group 502, light-sensitive element Group 503 can be arranged on touch pad 501 front, can be arranged on touch pad 501 rear, it is also possible to be embedded in touch pad in advance 501 is internal.

Light-sensitive element is the light-sensitive element that applicable wavelengths scope is narrower, utilizes the light-sensitive element choosing to wavelength of optical signal itself Selecting property, eliminates the interference of other wavelength channels.As can be selected for uv-sensitive component, infrared optical sensor.

In the present embodiment, described light-sensitive element group 502, light-sensitive element group 503 use infrared optical sensor, as red in can be selected for Outer light sensitive diode, infrared phototriode, light-sensitive element integrated package, or imageing sensor.

On light-sensitive element group 502, light-sensitive element group 503 radiator grille, filter glass can also effectively further eliminate it The interference of his wavelength channels.With reference to Fig. 6, light-sensitive element group being also provided with light-shielding structure, described light-shielding structure is used for hiding Keep off the light that irrelevant direction is penetrated.Described irrelevant direction, refers to control unrelated direction, general feelings with optical touch screen system Refer under condition except the direction in addition to touch pad.For this purpose, light-shielding structure can be able to be simple with flexible design It is positioned at the brake sack above or below light-sensitive element, it is also possible to be more complicated structure.

Such as, light-shielding structure uses light-filtering channels 600, the material that light-sensitive element group upper cover is differed from by light transmission to more complicated structure The light-filtering channels 600 that material is made, is used for filtering the light of directive light-sensitive element beyond touch pad 501.As light-filtering channels can be used Opaque plastic material is made.Be provided with elongated light-transmitting opening 601 on light-filtering channels 600, light-sensitive element group 502 be arranged in away from Light-transmitting opening 601 has the position of certain distance.

Light-transmitting opening 601 is slightly towards touch pad 501.The angle of light-transmitting opening 601 direction and touch pad 501 is with touch pad The increase of 501 width on light-transmitting opening 601 direction and reduce, in order to can receive on touch pad 501 the biggest Optical signal on the most whole touch pad of optical signal 501 of area.Light on touch pad 501 arrives light through light-transmitting opening 601 Quick element group 502.Most of light beyond touch pad 501 is blocked by light-filtering channels 600.Filter glass may be mounted at printing opacity On mouth 601.

With reference to Fig. 5, utilize the light-sensitive element group being contained in the transversely arranged light-sensitive element composition of the row above touch pad 502, determine the abscissa of luminous point；Utilize the light-sensitive element of the light-sensitive element composition of the row's longitudinal arrangement being contained in touch pad left Group 503, is determined the vertical coordinate of luminous point, and then is determined the position of luminous point on touch pad by two row's light-sensitive elements.

The one row's light-sensitive element determination method to the wherein one-dimensional coordinate of luminous point, with transversely arranged light-sensitive element group 502 As a example by be described as follows:

With reference to a in Fig. 7, to the light-sensitive element serial number of transversely arranged light-sensitive element group 502 it is, light-sensitive element 000,001,010,011,100, difference module is sought in the outfan connection connecting 700,5 frequency-selecting modules 700 of frequency-selecting module respectively 701, ask difference module 701 to include 4 operational amplifiers 702, the signal of telecommunication of 5 frequency-selecting module 700 outputs is asked poor the most two-by-two.

Operational amplifier 702 outfan connects microprocessor system 703, and microprocessor system 703 is according to each computing The difference of amplifier 702 output signal, is converted to the digital signal of correspondence.

The light intensity that microprocessor system 703 is subject to the light-sensitive element connected on the left of each operational amplifier 702 is stronger Time the signal of telecommunication that produces be " 1 ", otherwise be " 0 ", and press precedence from left to right and arrange data.And then by the region at luminous point place It is divided into the coordinates regional 1111,0111,0011,0001,0000 as shown in a in Fig. 8.

The raising of optical touch screen systemic resolution obviously can be achieved by increasing light-sensitive element quantity.With reference to Fig. 7 In figure b, the raising of optical touch screen systemic resolution, it is also possible to by increase operational amplifier 702 quantity, again to alternate Light-sensitive element group 502 produce the signal of telecommunication carry out asking poor, with segmentation further to coordinates regional, reach to put forward high-resolution effect Really.To the coordinates regional 1111,0111,0011,0001,0000 shown in a in Fig. 8, it is further subdivided into the seat shown in b in Fig. 8 Mark region, be followed successively by 11111 from left to right, 11110,01111,01110,00111,00110,00011,00010,00001, 00000。

Improve optical touch screen systemic resolution, it is also possible to carry out A/D by the electrical signal intensity that each light-sensitive element is produced Conversion, is compared to each other after being converted into digital information and is achieved.Its principle is similar to the principle realized above by integrated transporting discharging, Difference is that one is to be compared by hardware, and one is to be compared by software.

Light-sensitive element group 503 with reference to Fig. 9, the region that transversely arranged light-sensitive element group 502 marks off and longitudinal arrangement The region marked off, intersects to form the coordinates regional of square block, and the coordinates regional of each square block represents different digital information. When luminous point is positioned at the coordinates regional of a square block, optical touch screen system reflects the numeral that the coordinates regional of this square block represents Information, obtains the position of luminous point.

Said method is limited by hardware facility, and resolution easily reaches the limit.With reference to b in Fig. 8, illustrate a kind of profit High-resolution method is put forward by analog quantity.

Utilize analog quantity to put forward high-resolution method based on the hardware device shown in b in Fig. 8, improved by software and differentiate Rate.

Software is utilized to put forward high-resolution method, during based on the idea that luminous point moves on touch pad 501, its light intensity Smooth change, if luminous point is when crossing over coordinates regional 11110, transversely arranged two corresponding with coordinates regional 11110 are photosensitive Element, the light intensity difference reflected is changed to β, then laterally across the coordinates regional adjacent with coordinates regional 11110 When 01111, transversely arranged two light-sensitive element corresponding with coordinates regional 01111, the light intensity difference reflected changes For Ф, Ф=β+Δ, if Δ is negligible.

Set multiplication constant on an axis of abscissas as n, a length of l of abscissa of a coordinates regional.When luminous point position Time in coordinates regional 01111, with the luminous point light intensity difference change β when crossing over coordinates regional 11110 as reference.Sitting Transversely arranged two light-sensitive element corresponding with coordinates regional 01111 in mark region 01111, the light intensity reflected often becomes ChangeIt is considered as luminous point to move on the horizontal scaleOwing to Δ is negligible, can be by coordinates regional by said method 01111 is divided into n part, the resolution on the abscissa of 01111 will increase n times.When luminous point is by coordinates regional 01111, enter Adjacent coordinates regional, such as coordinates regional 01110, coordinates regional 00111, then with luminous point when crossing over coordinates regional 01111 Light intensity difference change Ф is reference.Assume again that the multiplication constant on axis of ordinates is also n, the most whole optical touch screen system Resolution will rise to original n²Times.

It is summarized as: described optical touch screen system includes that row's light-sensitive element, described row's light-sensitive element close according to its position System, is divided into a plurality of coordinates regional by touch pad；Luminous point described in signal processing system record is from a former coordinates regional side Move to the light intensity difference that opposite side causes and be set to β；When luminous point moves to adjacent coordinates region, by adjacent coordinates zonal ray Strength Changes situation compares with β, and according to adjacent coordinates peak width and former coordinates regional wide association, determines that luminous point exists Position on adjacent coordinates region.

Carry out measurement and the calculating of above-mentioned light intensity difference, can be by first light intensity difference being turned by A/D Change and be converted into digital information, microprocessor system by software, digital information is carried out according to above-mentioned formula and method Reason.

With reference to Figure 15, for the light-sensitive element group 502 being made up of rows of light-sensitive element shown in Fig. 8 and Fig. 9 and light Quick element group 503, can two with front equipped with plus lens 510, the light-sensitive element group 502 of plus lens 520 and photosensitive unit Part group 503 replaces.Signal processing system, to deserved employing by between luminous point and light-sensitive element group 502 and light-sensitive element group 503 Angular relationship obtains the signal processing system of the position of luminous point.The two kinds of signal processing systems mentioned in the present invention, can lead to Cross including the strength information of the signal of telecommunication relevant to luminous point that a plurality of light-sensitive elements judged in light-sensitive element group produce Information, determine the position of luminous point.Determine one or several light-sensitive elements that the associated electrical signals intensity of generation is the strongest, be true Determine the key of light spot position.The most above-mentioned summary conclusion utilizing software to put forward high-resolution method, is equally applicable to, by light Angular relationship between point and light-sensitive element group obtains the signal processing system of the position of luminous point.Signal processing system by luminous point with When angular relationship between light-sensitive element group 502 and light-sensitive element group 503 obtains the position of luminous point, then to photosensitive in light-sensitive element group The difference relationship of the light signal strength on element is analyzed, and is favorably improved precision.Signal processing system time specifically used, will Reference coordinate is modified to polar coordinate, then carries out corresponding with relevant information by corresponding coordinate figure in microprocessor system, I.e. available required signal processing system.The most no longer describe in detail.

Remote touch pen can be selected, it is also possible to select contact felt pen during use.For in the present invention two kinds of touches The difference of pen, it is preferred that emphasis is the producing method of luminous point is different.

When using contact felt pen, if touch pad 501 keeps flat on the table, only the tip of the brushstyle of a writing or painting of contact felt pen is with tactile Response just can be produced when template 501 contacts.This effect is suitable with the effect write on paper.

Following design makes the present embodiment realize operating with non-luminous touch part:

The present embodiment operates according to non-luminous touch part, then needs to increase a set of optical touch screen system light Source.The light source of optical touch screen system source can more uniform from touch pad 501 back side or side be radiated on touch pad 501. The light that light source produces is more uniform from the injection of touch pad 501 front.

Use a touch part contact touch pad 501, irradiating of the light that touch part is produced by light source, form luminous point.Touch Touching part is the object touching touch pad 501, can be finger, pen etc..

Luminous point moves with the movement touching part, by the movement of luminous point, the presence or absence of luminous point, and the flicker frequency of luminous point The part touch operation to optical touch screen system is touched Deng information realization.

Touch pad 501 back side can be arranged on reference to Figure 10, light source 101a；Can also arrange with reference to Figure 11, light source 101b In touch pad 501 side.

It is two strip-shaped light sources with reference to Figure 10, light source 101a, described strip-shaped light source, the luminescence of a strip can be included Body, it is also possible to be the light source of the strip being arranged in by multiple little sub-light sources.Being arranged on touch pad 501 back side, direction of illumination is Slightly towards touch pad 501 front.Light-sensitive element group 502, light-sensitive element group 503 are arranged on touch pad 501 back side, and photosurface is micro- Micro-towards touch pad 501 front.Try not to make light-sensitive element group 502, light-sensitive element group 503 photosurface by light source 101a Direct irradiation.

It is two strip-shaped light sources with reference to Figure 11, light source 101b, described strip-shaped light source, the luminescence of a strip can be included Body, it is also possible to be the light source of the strip being arranged in by multiple little sub-light sources.It is arranged on touch pad 501 side, is embedded in protection Plate (touch pad 501) is internal, and direction of illumination is slightly towards touch pad 501 front.Light-sensitive element group 503, light-sensitive element group 502 (not shown in Figure 11) is arranged on touch pad side, is embedded in protective plate (touch pad 501) internal, and photosurface is oriented slight court To touch pad 501 front.Try not to make straight by light source 101b of photosurface of light-sensitive element group 502, light-sensitive element group 503 Connect irradiation.

Two strip-shaped light sources in Figure 10 and Figure 11, simultaneously during injection light, the light of touch pad 501 injection is difficult to all Even, influence whether the determination to light spot position.

Solving light in the following way and be difficult to uniform problem, two strip-shaped light sources are alternately lighted, a strip-shaped light source point Time bright, the signal of telecommunication of corresponding row's light-sensitive element output is not received.What the most often row's light-sensitive element received is all only It is the light of corresponding strip-shaped light source injection, and the light of a strip-shaped light source injection is easy to be incident upon touch pad uniformly On, thus solve the problems referred to above.

Can also solve light in the following way and be difficult to uniform problem, two strip-shaped light sources select to differ bigger respectively Flicker frequency, corresponding two row's light-sensitive elements connect the frequency-selecting mould corresponding with each bar strip light source scintillation frequency respectively Block, thus solve the problems referred to above.

With reference to Figure 10 and Figure 11, when touching part and not touching touch pad 501, light source 101a or light source 101b produces Raw light only has little partial illumination to light-sensitive element group 502 and light-sensitive element group 503.Owing to being formed without luminous point, photosensitive The uniform light that element group 502 and light-sensitive element group 503 receive, operational amplifier can not compare each light-sensitive element and receive The obvious difference of light, react for not there is touch event.

When touching part and touch pad 501 being touched, touch pad 501 produces luminous point, light source 101a or light source The light that 101b produces is reflected back, and light exists diffuse-reflectance in reflection, is irradiated to light-sensitive element group 502 and light-sensitive element Group 503.The light that each light-sensitive element receives is uneven, the light that operational amplifier receives by comparing each light-sensitive element Difference, reflects corresponding touch event.

The problem that the protective plate that following design solution the present embodiment employing area is bigger is potential when being touch pad:

With reference to Figure 12, when touch pad 501 area is bigger, light-sensitive element group may not well receive and be positioned at touch pad The signal of luminous point everywhere on 501.For solving the problems referred to above, use the design described in Figure 12, by touch pad 501 4 Week fills light-sensitive element, and one piece of touch pad 501 is divided into four pieces of sub-touch pad 12a, 12b, 12c, 12d.By four pieces of sons are touched Four pieces of sub-touch pads are combined by the light-sensitive element group Unified coding in template, thus sensitivity are improved.

The following security of system problem being designed for solving the present embodiment:

With reference to Fig. 1 b, Fig. 2, Fig. 3, Fig. 4, contact felt pen and remote touch pen all can arrange signal generating module, And the signal of telecommunication that signal generating module produces is converted into optical signal sends optical touch screen system to.Arrange to optical touch screen system One coding lock system, arranges a supporting electron key system to the signal generating module of contact felt pen and remote touch pen System.Make the most supporting contact felt pen and remote touch pen could operate optical touch screen system, beneficially security of system.

In order to increase the versatility of contact felt pen and remote touch pen, i.e. in order to make a contact felt pen or remote Journey felt pen can operate multiple optical touch screen system, signal generating module can be made to comprise and organize unlocking information more.Contact is touched Touch pen or remote touch pen, send the optical signal carrying many group unlocking information to optical touch screen system, one of which unblock letter Breath meets the unlocking requirements of optical touch screen system can be completed to unlock.

Described one group of unlocking information can be included in the digital information in carrier wave, it is also possible to frequency oscillation and specific frequency Signal.

Contact felt pen and remote touch pen constantly send to carry to optical touch screen system in use organizes solution more The optical signal of lock information, produces luminous point.The luminous point that optical touch screen system produces with the optical signal carrying many group unlocking information is Relevant luminous point.

In order to easy to use, many groups unlocking information that signal generating module comprises should be easy to user and update voluntarily.Cause This signal generating module should be provided with the function that can in good time edit unlocking information, and this function can be by by signal generating module and Flash memory communication connects realization.

Specific embodiment two, with the screen of projecting display as touch pad:

Referring to figs. 1 through Fig. 9, optical touch screen system with the screen of projecting display for touch pad 501 with protective plate is Touch pad 501, structure and principle are essentially identical.

One of different, if the screen of projecting display is not transparent medium, then light can not be at projecting display Inside screen ordered propagation, so being not easy to realize operating with non-luminous touch part.

The two of difference, the screen of projecting display is generally large, for ensureing that at luminous point, the optical signal of injection can be by smoothly Receive, need design further.

The screen of existing large screen back projection formula display is typically spliced to form by multiple the small screen.With reference to Figure 13, large-size screen monitors The screen (touch pad 501) of curtain projecting display is spliced to form by 4 the small screen 13a, 13b, 13c, 13d.Depending on the small screen 13a, 13b, 13c, 13d are sub-touch pad, and every sub-touch pad all uses structure as shown in figure 12, by every sub-touch pad again Secondary it is divided into 4 little sub-touch pads, thus touch pad 501 is divided into 16 sub-touch pads.

Light-sensitive element is arranged on the back side of the screen (touch pad 501) of large screen back projection formula display, in order to avoid impact regards Feel effect.

Specific embodiment three, with liquid crystal display equipment screen or negative electrode display tube display (CRT) screen as touch pad:

Referring to figs. 1 through Fig. 9, and Figure 11 and Figure 12, optical touch screen system with liquid crystal display equipment screen for touch pad 501 or It is touch pad 501 with negative electrode display tube display (CRT) screen, and with protective plate for the basic phase of touch pad 501, structure and principle With.

Difference: liquid crystal display equipment screen and negative electrode display tube display (CRT) screen are relative to the difference of protective plate Part, the light transmission being before and after liquid crystal display equipment screen and negative electrode display tube display (CRT) screen between two sides is bad, I.e. light is difficult to penetrating LCD device screen and negative electrode display tube display (CRT) screen.Light-sensitive element group 502, light-sensitive element The sides that group 503 is suitably arranged on touch pad 501, or above.

When making the present embodiment realize operating with non-luminous touch part, structure as shown in Figure 10 should not be used, suitable Preferably use structure as shown in figure 11.

Specific embodiment four, with the screen of light-emitting diode display as touch pad:

Referring to figs. 1 through Fig. 9, and Figure 12, optical touch screen system with the screen of light-emitting diode display for touch pad 501 with in case Backplate is that touch pad 501, structure and principle are essentially identical.

One of different, the screen of light-emitting diode display, relative to the difference of protective plate, is the screen of light-emitting diode display Front and back the light transmission between two sides is bad, i.e. light is difficult to penetrate the screen of light-emitting diode display.Light-sensitive element group 502, light-sensitive element group 503 are suitably arranged on before touch pad 501.

With reference to Figure 14, the screen of most light-emitting diode displays is formed by substantial amounts of single led 141, light-sensitive element group 502, light Quick element group 503 can also be arranged between substantial amounts of single led 141, in i.e. light sensor is embedded in touch pad.Due to light Quick element group 502, light-sensitive element group 503 small volume, and transparent do not interfere with visual effect.Light-sensitive element group 502, photosensitive unit Part group 503 is arranged between substantial amounts of single led 141, it is simple to increases light-sensitive element group 502, light-sensitive element group 503 quantity, enters And increase the degree of accuracy of optical touch screen system.For the ease of receiving optical signal, light-sensitive element group 502, the sense of light-sensitive element group 503 The height of bright finish should be higher than that single led 141 height.

For the touch pad that other fronts are transparent, it would however also be possible to employ light-sensitive element is embedded in the structure within touch pad, as The liquid crystal display equipment screen of giant-screen, it is big that light-sensitive element group 502, light-sensitive element group 503 can also be embedded in as touch pad In the liquid crystal display equipment screen of screen.Due to light-sensitive element group 502, light-sensitive element group 503 small volume, and transparent do not interfere with Visual effect.Such structure is compacter, stable.

The two of difference, light can not be at the inside screen ordered propagation of light-emitting diode display, so being not easy to realize with the most luminous Touch part operate.

Specific embodiment five, with projecting apparatus screen as touch pad:

Referring to figs. 1 through Fig. 9, and Figure 12, optical touch screen system with projecting apparatus screen for touch pad 501 with protective plate is Touch pad 501, structure and principle are essentially identical.

Difference, projecting apparatus screen is not transparent medium, and light can not be orderly at the inside screen of projecting display Propagate, so being not easy to realize operating with non-luminous touch part.Light-sensitive element group 502, light-sensitive element group 503 suitably set Put in projecting apparatus screen front or behind.

The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technology of the industry Personnel are not it should be appreciated that the present invention is limited by above-mentioned using method, and described in above-mentioned using method and description is to say The principle of the bright present invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, this A little changes and improvements both fall within scope of the claimed invention.Claimed scope is by appending claims And equivalent defines.

Claims (80)

1. contact felt pen, it is characterised in that include a shell, power supply, switch and light-emitting component, on-off control light-emitting component Luminous situation, switch is connected with the touch end of contact felt pen；

Contact felt pen coordinates optical touch screen system to carry out contact touch, and optical touch screen system joined together, including touching Plate, signal processing system, also include light-sensitive element group, and described light-sensitive element group includes a plurality of light-sensitive element, a plurality of photosensitive Element connects signal processing system, and the light-sensitive element in light-sensitive element group is connected by light with touch pad；

When using optical touch screen system, contact felt pen touches end and triggers switch when touching touch pad, and light-emitting component is luminous, Forming luminous point on a touchpad, light-sensitive element, by irradiating from the light of described luminous point, is reflected as the signal of telecommunication being correlated with；

Access the signal generating module producing electric oscillation signal between power supply and light-emitting component, make light-emitting component produce the light letter of flicker Number；

The signal generating module of contact felt pen comprises organizes unlocking information more；

Contact felt pen, sends the optical signal carrying many group unlocking information to optical touch screen system, one of which unblock letter Breath meets the unlocking requirements of optical touch screen system can be completed to unlock.

Contact felt pen the most according to claim 1, it is characterised in that contact felt pen is contacting with optical touch pad Shi Faguang, forms a luminous point on a touchpad, and luminous point is mobile with the movement of contact felt pen, thus by the luminous point of movement Realize the touch operation to optical touch screen system of the contact felt pen.

Contact felt pen the most according to claim 1, it is characterised in that described light-emitting component is to launch sending out of visible ray Optical element.

Contact felt pen the most according to claim 1, it is characterised in that described light-emitting component is to launch black light Light-emitting component.

Contact felt pen the most according to claim 1, it is characterised in that power supply directly connects luminous unit by switch Part.

Contact felt pen the most according to claim 1, it is characterised in that described light-emitting component uses light emitting diode, Light emitting diode is positioned at the contact jaw of a shell and touch pad, and light emitting diode upper end props up the button of switch.

Contact felt pen the most according to claim 6, it is characterised in that light emitting diode when using contact felt pen Touching touch pad, light emitting diode is under pressure and triggers the button of switch, and light-emitting component is luminous, forms luminous point on a touchpad.

Contact felt pen the most according to claim 6, it is characterised in that described switch is opening of pressure transducer form Close.

Contact felt pen the most according to claim 1, it is characterised in that contact felt pen is additionally provided with modifier key, Signal generating module is provided with the frequency corresponding with button.

Contact felt pen the most according to claim 9, it is characterised in that press modifier key, light emitting diode touches During touch pad ON switch, light-emitting component is with the frequency scintillation corresponding with modifier key.

11. contact felt pens according to claim 10, it is characterised in that optical touch screen system is to this frequency scintillation Optical response signal for click on functions of mouse right key.

12. contact felt pens according to claim 10, it is characterised in that optical touch screen system is to this frequency scintillation Optical response signal for click on left mouse button function.

13. contact felt pens according to claim 10, it is characterised in that contact felt pen and existing laser pen Radio function integrate, realize clicking on functions of mouse right key and lantern slide page-turning function by radio function.

14. contact felt pens according to claim 1, it is characterised in that the power supply of contact felt pen is charged electrical Source.

15. contact felt pens according to claim 14 a, it is characterised in that shell is provided with charging inlet, it is simple to connect Touch felt pen charges.

16. contact felt pens according to claim 15, it is characterised in that contact felt pen is applied to portable electric During subset, portable electric appts is provided with contact felt pen slot, is provided with charging electrode, connects in contact felt pen slot Time in touch felt pen insertion contact felt pen slot, described charging inlet docks with charging electrode, charges charge power supply.

17. contact felt pens according to claim 16, it is characterised in that described portable electric appts be mobile phone, Any one in palm PC, handheld device, notebook computer.

18. according to the contact felt pen described in any one in claim 1-17, it is characterised in that use contact to touch Time, if touch pad keeps flat on the table, when only the tip of the brushstyle of a writing or painting of contact felt pen contacts, just can produce response with touch pad.

19. according to the contact felt pen described in any one in claim 1-17, it is characterised in that signal generating module sets It is equipped with an electron key system.

20. contact felt pens according to claim 19, it is characterised in that described one group of unlocking information is included in load Digital information in ripple.

21. contact felt pens according to claim 19, it is characterised in that described one group of unlocking information is with specific frequency The signal of rate vibration.

22. contact felt pens according to claim 1, it is characterised in that contact felt pen is the most continuous Send to optical touch screen system and carry the optical signal organizing unlocking information more, produce luminous point.

23. contact felt pens according to claim 22, it is characterised in that optical touch screen system organizes solution to carry more The luminous point that the optical signal of lock information produces is relevant luminous point.

24. contact felt pens according to claim 19, it is characterised in that signal generating module is provided with edits solution in good time The function of lock information, this function is by being connected realization by signal generating module with a flash memory communication.

25. according to the contact felt pen described in any one in claim 1-17, it is characterised in that also include laser instrument, The signal generating module producing electric oscillation signal, signal generating module connecting laser, signal is accessed between power supply and light-emitting component Occur module to produce the signal of telecommunication of vibration, and drive laser instrument to send the laser signal of the flicker corresponding with the signal of telecommunication.

26. contact felt pens according to claim 25, it is characterised in that laser instrument is the laser launching visible ray Device.

27. contact felt pens according to claim 25, it is characterised in that laser instrument is the laser launching black light Device.

28. according to the contact felt pen described in any one in claim 1-17, it is characterised in that switch sections is provided with many Individual button, the unlike signal that each button produces corresponding to signal generating module, therefore produce the multiple laser with different information Signal.

29. contact felt pens according to claim 25, it is characterised in that laser instrument has two, a laser instrument Launching visible ray, another laser instrument launches infrared ray, the light ray parallel that two laser instrument send, it is seen that light behaviour offer regards Feeling and feed back, Infrared has compared with the more preferable anti-interference of visible ray as signal vehicle.

30. according to the contact felt pen described in any one in claim 1-17, it is characterised in that have three on switch Button, each button is corresponding with a kind of signal of telecommunication.

31. according to the contact felt pen described in any one in claim 1-17, it is characterised in that on the shell of felt pen There is the fixed structure of ring shape.

32. contact felt pens according to claim 31, it is characterised in that felt pen is fixed on by fixed structure On finger, produce the luminous point following finger movement.

33. contact felt pens according to claim 32, it is characterised in that be worn over by felt pen on right hand forefinger, use Thumb controls button.

34. contact felt pens according to claim 31, it is characterised in that shell is provided with the fixing of two ring shape Structure, is connected by wire between two fixed structures, and equipped with launching ultrared laser instrument on fixed structure, another is fixed Equipped with switch, power supply, signal generating module, signal amplification module in structure.

35. contact felt pens according to claim 34, it is characterised in that equipped with the fixed knot of laser instrument during use Structure, is worn on forefinger, and the fixed structure equipped with switch is worn on middle finger, and the direction of illumination of laser instrument is towards finger tip, pressing of switch Key is towards thumb.

36. contact felt pens according to claim 35, it is characterised in that with the button of thumb control switches, laser Device is to the direction injection laser that forefinger points to, and the action of forefinger drives laser action, and then handles the action of luminous point.

37. optical touch screen systems, including touch pad, signal processing system, it is characterised in that also include light-sensitive element group, described Light-sensitive element group includes a plurality of light-sensitive element, and a plurality of light-sensitive elements connect signal processing system, the light in light-sensitive element group Quick element is connected by light with touch pad；

When using optical touch screen system, presenting a relevant luminous point on a touchpad, light-sensitive element is by from described luminous point The irradiation of light, is reflected as the signal of telecommunication being correlated with；

For the touch pad of plane, the light-sensitive element that a row is transversely arranged, the relevant signal of telecommunication produced by each light-sensitive element Difference relationship, determines the lateral coordinates of luminous point；The light-sensitive element of one row's longitudinal arrangement, by each light-sensitive element produce relevant Signal of telecommunication difference relationship, determines the longitudinal coordinate of luminous point, so that it is determined that the position that luminous point is on a touchpad；

Optical touch screen system coordinates contact felt pen to carry out contact touch, and contact felt pen includes a shell, power supply, switch And light-emitting component, the luminous situation of on-off control light-emitting component, switch is connected with the touch end of contact felt pen；

When using optical touch screen system, contact felt pen touches end and triggers switch when touching touch pad, and light-emitting component is luminous, Forming luminous point on a touchpad, light-sensitive element, by irradiating from the light of described luminous point, is reflected as the signal of telecommunication being correlated with；

Access the signal generating module producing electric oscillation signal between power supply and light-emitting component, make light-emitting component produce the light letter of flicker Number；

The signal generating module of contact felt pen comprises organizes unlocking information more；

Contact felt pen, sends the optical signal carrying many group unlocking information to optical touch screen system, one of which unblock letter Breath meets the unlocking requirements of optical touch screen system can be completed to unlock.

38. according to the optical touch screen system described in claim 37, it is characterised in that the signal of telecommunication that light-sensitive element produces is sent to Signal processing system, by a plurality of signals of telecommunication of analysis a plurality of light-sensitive elements generation, signal processing system includes that intensity exists Interior information, it is thus achieved that described luminous point positional information on a touchpad.

39. according to the optical touch screen system described in claim 37, it is characterised in that: describedPhotosensitive unit in light-sensitive element group Part is connected by light with touch padRefer to that, in the light of touch pad, at least Ray Of Light is through light-sensitive element.

40. according to the optical touch screen system described in claim 39, it is characterised in that: the light-sensitive element in light-sensitive element group need not All it is connected by light with touch pad, but at least two light-sensitive elements are connected by light with touch pad.

41. optical touch screen systems according to claim 40, it is characterised in that: described luminous point is selected and is flashed with certain frequency Luminous point, signal processing system includes a frequency-selecting module corresponding with described smooth dot flicker rate；Flicker frequency and optical touch screen The frequency-selecting module of system is corresponding, and the wavelength of light of luminous point is corresponding with the reception wavelength of light-sensitive element.

42. according to the optical touch screen system described in claim 37, it is characterised in that: described optical touch screen system includes a plurality of Light-sensitive element group, described light-sensitive element group front is provided with a plus lens.

43. optical touch screen systems according to claim 42, it is characterised in that: by plus lens by light collection to institute State on the photosurface of light-sensitive element group.

44. optical touch screen systems according to claim 43, it is characterised in that: plus lens by luminous point clearly as presenting On photosurface, or simply being radiated at luminous point on photosurface through the light converged, it is not necessary to imaging.

45. optical touch screen systems according to claim 42, it is characterised in that: after have employed plus lens, described photosensitive The signal of telecommunication produced in element group, relevant relative to the distance of described light-sensitive element group and angle with luminous point.

46. optical touch screen systems according to claim 45, it is characterised in that: the signal of telecommunication that light-sensitive element produces is sent to Signal processing system, signal processing system is by analyzing the electrical signal information that light-sensitive element group produces, it is thus achieved that described luminous point is touching Positional information in template, signal processing system processes the signal of telecommunication produced in described light-sensitive element group, process in the signal of telecommunication with The information of distance dependent, or process information relevant with angle in the signal of telecommunication, or integrated treatment.

47. according to the optical touch screen system described in claim 37, it is characterised in that: light-sensitive element group is by a plurality of independent Light-sensitive element sequential combination forms.

48. according to the optical touch screen system described in claim 37, it is characterised in that: a plurality of light-sensitive elements are integrated in a collection On in bulk.

49. according to the optical touch screen system described in claim 37, it is characterised in that: light-sensitive element group uses and is integrated with a large amount of light The imageing sensor of quick element.

50. optical touch screen systems according to claim 41, it is characterised in that: can be by the light of optical touch screen system identification Point needs to meet, and flicker frequency is corresponding with the frequency-selecting module of optical touch screen system, and the wavelength of light of luminous point connects with light-sensitive element Receipts wavelength is corresponding.

51. according to the optical touch screen system described in claim 37, it is characterised in that: signal processing system arrives by comparing luminous point In light-sensitive element group, the distance difference relation of light-sensitive element obtains the position of described luminous point, and the difference of distance passes through each light-sensitive element The difference from the light signal strength of described luminous point received is reflected.

52. according to the optical touch screen system described in claim 37, it is characterised in that: signal processing system, by luminous point and light Angular relationship between quick element group obtains the position of described luminous point, and angular relationship passes through plus lens by the optical signal of described luminous point The position converged in light-sensitive element group is reflected.

53. optical touch screen systems according to claim 52, it is characterised in that: for the touch pad of plane, two groups have The light-sensitive element group of plus lens determines that the position of luminous point, a light-sensitive element group determine that a pole relevant with angle is sat Mark, two light-sensitive element groups determine two interlaced polar coordinate relevant with angle, true by including two polar coordinate The information made, determines the position of luminous point.

54. according to the optical touch screen system described in claim 37, it is characterised in that: signal processing system passes through luminous point with photosensitive When angular relationship between element group obtains the position of described luminous point, also to the light signal strength on light-sensitive element in light-sensitive element group Difference relationship be analyzed, to improve precision.

55. according to the optical touch screen system described in claim 37, it is characterised in that: touch pad selects the screen of display.

56. optical touch screen systems according to claim 55, it is characterised in that: the screen of display is projecting display Screen, liquid crystal display equipment screen, negative electrode display tube display (CRT) screen, the screen of light-emitting diode display, projecting apparatus screen.

57. according to the optical touch screen system described in claim 37, it is characterised in that: touch pad selects the transparent of screen front Protective plate.

58. optical touch screen systems according to claim 55, it is characterised in that: the light-sensitive element in light-sensitive element group is arranged At screen periphery.

59. according to the optical touch screen system described in claim 37, it is characterised in that: when screen is the screen of printing opacity, photosensitive unit Light-sensitive element in part group is arranged in screen front or behind；

60. according to the optical touch screen system described in claim 37, it is characterised in that: screen be front be the screen of transparent medium Time, the light-sensitive element in light-sensitive element group is arranged in around screen front or around light transmission medium edge.

61. optical touch screen systems according to claim 60, it is characterised in that: transparent medium is glass or transparent moulding Material.

62. optical touch screen systems according to claim 58, it is characterised in that: when touch pad is transparent protective plate, light Quick element group is arranged between the front of protective plate, screen and protective plate or around protective plate edge.

63. according to the optical touch screen system described in any one in claim 37-62, it is characterised in that: on a touchpad in The existing luminous point by optical touch screen system identification, is the luminous point relevant to optical touch screen system.

64. optical touch screen systems according to claim 63, it is characterised in that: optical touch screen system itself does not have light Source, the extraneous device used with the collocation of optical touch screen system has light source, the light that the device that collocation uses produces on a touchpad The luminous point that point is correlated with as optical touch screen system.

65. optical touch screen systems according to claim 63, it is characterised in that: optical touch screen system itself has light source, Using a touch part contact touch pad, touch the part the irradiating of light by light source, the luminous point of formation is as optical touch screen system phase The luminous point closed.

66. optical touch screen systems according to claim 65, it is characterised in that: optical touch screen system also includes that a light touches Screen system light source, touch pad front portion is transparent medium, and the more uniform outer surface that is radiated at of light that described light source produces has transparent On the touch pad of medium, and transmission outside touch pad.

67. optical touch screen systems according to claim 66, it is characterised in that: light is derived from the touch pad back side or side is more equal Even irradiation on a touchpad, and more uniform transmission outside touch pad.

68. optical touch screen systems according to claim 63, it is characterised in that: luminous point moves with the movement touching part, Part is touched to optical touch screen by the information realization including the flicker frequency of the movement of luminous point, the presence or absence of luminous point and luminous point The touch operation of system.

69. optical touch screen systems according to claim 65, it is characterised in that: touch pad is the protection of screen transparent front Plate, is provided with strip-shaped light source in the horizontal side of the close screen side of protective plate, and another horizontal side is provided with row's light-sensitive element The light-sensitive element group of composition, the light of strip-shaped light source passes through protective plate, and direction of illumination is another horizontal side corresponding thereto, and Slight oblique protective plate front；It is provided with strip-shaped light source, another longitudinal side in longitudinal side of the close screen side of protective plate Being provided with the light-sensitive element group of row's light-sensitive element composition, the light of strip-shaped light source passes through protective plate, and direction of illumination is corresponding thereto Another longitudinal side, and slight oblique protective plate front.

70. optical touch screen systems according to claim 69, it is characterised in that: two row's light-sensitive elements connect signal processing system System, signal processing system is one to obtain described light by comparing luminous point to the distance difference relation of light-sensitive element in light-sensitive element group The signal processing system of the position of point.

71. optical touch screen systems according to claim 70, it is characterised in that: two light being made up of row's light-sensitive element Quick element group, replaces to be provided with the light-sensitive element group of plus lens, and two light-sensitive element groups being provided with plus lens connect through Information including the angular relationship between luminous point and light-sensitive element group, it is thus achieved that the signal processing system of described light spot position.

72. according to the optical touch screen system described in claim 71, it is characterised in that: two light-sensitive elements being provided with plus lens Group, it is easy to be arranged on the corner of touch pad, effectively to reduce blind area.

73. optical touch screen systems according to claim 69, it is characterised in that: described strip-shaped light source, by multiple little The light source of the strip that sub-light source is arranged in.

74. optical touch screen systems according to claim 69, it is characterised in that: described strip-shaped light source includes sending out of a strip Body of light.

75. optical touch screen systems according to claim 69, it is characterised in that: described strip-shaped light source, touch part from touch Plate farther out time, touch pad in the light appeared, only a small amount of light is radiated on touch part, only has the most again small part light It is reflected back touch pad again, and the light being reflected back is not concentrated, it is impossible to forming luminous point, optical touch screen system is not responding to；

Touch light when part contacts with touch pad and can not penetrate touch pad, directly form light at touch part with touch pad contact position Point.

76. optical touch screen systems according to claim 69, it is characterised in that: the optical signal of a strip-shaped light source injection, Being converted into the corresponding signal of telecommunication by corresponding light-sensitive element and be sent to signal processing system, signal processing system is corresponding by this The signal of telecommunication as obtain described luminous point location dependent information on a touchpad；

The optical signal that this strip-shaped light source penetrates can not be sent at signal by the light-sensitive element corresponding with other strip-shaped light sources Reason system, or the light-sensitive element corresponding with other strip-shaped light sources can by this strip-shaped light source penetrate optical signal be sent to letter Number processing system, but signal processing system not using this corresponding signal of telecommunication as obtaining described luminous point position phase on a touchpad Pass information.

77. according to the optical touch screen system described in claim 76, it is characterised in that: described plural number bar strip-shaped light source replaces a little Bright, when wherein a strip-shaped light source is not lighted, the signal of telecommunication of corresponding light-sensitive element group output is not received；

Article one, during strip light source igniting, the signal of telecommunication of corresponding light-sensitive element group output is received by signal processing system and locates Reason.

78. according to the optical touch screen system described in claim 77, it is characterised in that: plural number bar strip-shaped light source, with each strip light Source is provided with light-sensitive element accordingly；Each strip-shaped light source is respectively provided with the flicker frequency that difference is bigger；

The each light-sensitive element corresponding with each strip-shaped light source connects the frequency-selecting module corresponding with this strip-shaped light source flicker frequency respectively.

79. optical touch screen systems according to claim 63, it is characterised in that: optical touch screen system itself has light source, The extraneous device used with the collocation of optical touch screen system also has light source, the light that the device used with collocation produces on a touchpad The luminous point that point is correlated with as optical touch screen system,

Or with, use a touch part contact touch pad, including the device used with the collocation of optical touch screen system, touch part and be subject to The irradiation of the light of light source, the luminous point of formation, as the luminous point that optical touch screen system is relevant.

80. according to the optical touch screen system described in claim 79, it is characterised in that: close the light of optical touch screen system itself Source, optical touch screen system is the pattern that optical touch screen system itself does not have light source；Open the light source of optical touch screen system itself, Optical touch screen system is the pattern that optical touch screen system itself has light source.