CN102819354A - Touch screen with overlapped signal areas - Google Patents
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- CN102819354A CN102819354A CN2011101503610A CN201110150361A CN102819354A CN 102819354 A CN102819354 A CN 102819354A CN 2011101503610 A CN2011101503610 A CN 2011101503610A CN 201110150361 A CN201110150361 A CN 201110150361A CN 102819354 A CN102819354 A CN 102819354A
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Abstract
A touch screen with overlapped signal areas relates to a touch screen. The touch screen comprises a touch plate and a micro-processor system, wherein the micro-processor system is connected to a touch position detection module for detecting the touch point position; the touch position detection module comprises an optical signal receiving head and a signal processing module; a photosensitive element is arranged on the optical signal receiving head; the photosensitive element is connected with the signal processing module; the optical signal receiving head comprises at least four light filter channels; a light inlet is arranged at one end of each light filter channel; the photosensitive element is arranged at the other end of the light filter channel; the channel wall of the light filter channel is a channel wall with a shielding role; the optical signal receiving head is arranged in the front of the touch plate; the light inlets of at least four light filter channels of the optical signal receiving head face toward the touch plate, and a corresponding optical signal receiving area is formed on the touch plate. The touch screen not only has a simple structure and low cost, and but also utilizes less apparatuses because of the adoption of the technical scheme.
Description
Technical field
The present invention relates to electronic equipment, relate in particular to a kind of touch-screen.
Background technology
Growing along with multimedia technology, touch-screen obtains application more and more widely with convenient, simple, natural input medium, like the information inquiry in telecommunication bureau, bank, street corner, city, Industry Control, multimedia teaching etc.Utilize this technology, the user needs only the picture and text that bump lightly on the display screen with finger or other touch parts and just can realize operating, thereby makes man-machine interaction more directly perceived, greatly facilitates the user.
Existing touch-screen has various ways, and wherein infrared touch panel is with respect to other touch-screens, has not receive electric current, voltage and electrostatic interference advantages such as suitable some harsh environmental conditions.Almost, capture the market of other touch-screens gradually with overwhelming advantage.But infrared touch panel has had influence on the compactedness of structure owing to increased framework at ordinary screen, and applied environment limits to some extent.And the infrared touch panel cost is still higher, is not easy to be applied to the touch-screen more than 30 cun.
Summary of the invention
The object of the present invention is to provide the signal area to have the overlapping touch screen, to solve the problems of the technologies described above.
The technical matters that the present invention solved can adopt following technical scheme to realize:
There is the overlapping touch screen in the signal area; Comprise a touch pad, a microprocessor system; Said microprocessor system connects the touch location detection module of a detected touch point position, it is characterized in that, said touch location detection module comprises that light signal receives head and signal processing module; Said light signal receives head and is provided with light activated element, and said light activated element connects said signal processing module;
Said light signal receives head and comprises at least four optical filtering passages; Said optical filtering passage one end is provided with a light inlet, and the other end of said optical filtering passage is provided with said light activated element, and the conduit wall of said optical filtering passage is the conduit wall with interception;
At least four optical filtering passages; Said light signal receives head and places touch pad the place ahead; The light inlet of at least four optical filtering passages of said light signal reception head is towards said touch pad; On said touch pad, form corresponding light signal receiving area, there is lap in formed at least two light signal receiving areas;
On said touch pad, forming one can be by the light contact of said touch location detection module identification; And at least four optical filtering passages; When the said light activated element at least two optical filtering passages receives the light of said smooth contact place's reflection, be regarded as the light contact and be positioned at least two said optical filtering passages form corresponding light signal receiving area on touch pad overlapping region.
Said light signal receives head and places touch pad the place ahead, is meant that said light signal receives head and places the positive the place ahead of touch pad, and perhaps said light signal receives the place ahead that head places the touch pad back side.
Said light activated element receives the light of said light inlet in the zone, so that said light inlet the place ahead forms an effective said light signal receiving area.Light activated element in the said optical filtering passage receives the light signal in the said light signal receiving area through said light inlet.Light signal beyond the above light signal receiving area of touch pad is seldom received by said light activated element, even is not received by said light activated element fully, to such an extent as to said light activated element does not respond the light signal beyond the said light signal receiving area.
When forming one on the said touch pad can be by the light contact of said touch location detection module identification the time; The light signal that place, said smooth contact sends is received by at least one the said light activated element in the said touch location detection module; Handle back generation touch signal through signal processing module, and touch signal is passed to said microprocessor system; Said microprocessor system is regarded as the pairing light signal of the light inlet receiving area that said smooth contact is positioned at the light activated element place optical filtering passage that receives said light signal, and with the light signal receiving area be associated with on the said touch pad or touch pad place picture displayed on.Above-mentioned design is specially adapted to control electrical equipment such as televisor, air-conditioning.Light activated element scan light contact is adopted in above-mentioned design, makes the touch location detection module have remarkable advantages such as simple in structure, with low cost, that Installation and Debugging are simple.
Said light activated element can adopt infrared receiving terminal.With simplified system and the signal Processing amount that reduces the touch location detection module.
The width of said optical filtering channel interior is: said light inlet width at one end greater than said light activated element width at one end, and width at one end at one end reduces to said light activated element from said light inlet gradually.
At least four said optical filtering passages are arranged in order at least two rows, and said light activated element institute is at one end adjacent, and said light inlet institute is at one end adjacent.Above-mentioned design makes the light signal receiving area towards unanimity.
Wherein, at least four said optical filtering passages are arranged in order into a row, and said light activated element institute is at one end adjacent, and said light inlet institute is at one end adjacent.Above-mentioned design makes the light signal receiving area towards unanimity.
When existing a plurality of said light activated elements to receive the light of said smooth contact place's reflection in same row's the optical filtering passage; Be regarded as the middle part of light contact between the light signal zone at two said light activated element places at a plurality of said light activated elements two ends; Said signal processing module produces touch signal; And touch signal passed to said microprocessor system, the affiliated light contact position that said microprocessor system will judge is associated with on the said touch pad.A plurality of said light activated elements are meant plural said light activated element.
The concrete of same row can be: when existing the said light activated element of even number to receive the light of said smooth contact place's reflection in same row's the optical filtering passage; Be regarded as the middle parts that the light contact is positioned at the light signal zone at middle two said light activated element places; Said signal processing module produces touch signal; And touch signal passed to said microprocessor system, the middle part of the light signal receiving area at two said light activated elements places was associated with on the said touch pad in the middle of said microprocessor system will be positioned at.
When existing the said light activated element of odd number to receive the light of said smooth contact place's reflection in same row's the optical filtering passage; Be regarded as the light signal zone that the light contact is positioned at middle light activated element place; Said signal processing module produces touch signal; And touch signal passed to said microprocessor system, the light signal zone association at the light activated element place in the middle of said microprocessor system will be positioned at is to said touch pad.
Said light inlet is provided with optical filter, so that the uncorrelated light signal of filtering.At least four said light inlets that said light signal receives head adopt same optical filter.
The said conduit wall of said optical filtering passage is provided with reflector layer, to strengthen light.Can receive the light signal that the corresponding light signal location of optical filtering passage is sent so that guarantee the corresponding light activated element of optical filtering passage.
The said conduit wall of said optical filtering passage is provided with dark coating, to absorb light.The light activated element that passage is corresponding so that avoid filtering is received the light signal that the corresponding light signal location of other optical filtering passages is sent.
Touch part and produce light beam, said light beam forms a light contact on said touch pad.
Said touch part can adopt the remote touch pen, and the remote touch pen adopts laser instrument, on said touch pad, forms the light contact through laser.The said remote touch pen of remote touch pen comprises laser instrument, power supply; Also has signal generating module; Power supply connects signal generating module; Signal generating module connects laser instrument, and signal generating module produces the electric signal of vibration, and drive laser is sent the laser signal with the corresponding flicker of electric signal.The remote touch pen exists the overlapping touch screen to realize the respective remote operation through Long-distance Control light contact to the signal area.The remote touch pen is provided with switch.
Said touch part can adopt the short range felt pen, and the short range felt pen comprises a light-emitting component, and the light-emitting component that touches part triggering touch part when touching said touch pad is luminous, on touch pad, forms the light contact.Said short range touch pad comprises a shell, power supply, switch and light-emitting component, the luminous situation of switch control light-emitting component; Switch is connected with the touch end of short range felt pen, touches end trigger switch when touching touch pad, and light-emitting component is luminous, on touch pad, forms the light contact.The short range felt pen is luminous when contacting with touch pad, on touch pad, forms a smooth contact, and move with the short range felt pen the light contact, thereby realizes that through the light contact there is the touch operation of overlapping touch screen in the short range felt pen to the signal area.
Also comprise a power supply, said power supply comprises an accumulator, and said accumulator connects a photoelectric cell, and said photronic sensitive surface is towards touch pad, and the luminous energy of accepting on the touch pad is realized charging.
Said microprocessor system connects a remote controller module, and said microprocessor system sends the telepilot receiving end that signal is given controlled plant through remote controller module.
Said remote controller module adopts the IR remote controller module, and infrared emission head the place ahead of said IR remote controller module is provided with an astigmatism plate, light signal is launched towards periphery reduced the blind area.
At least four said optical filtering passages light inlet be strip, wherein the length direction of the said light signal receiving area that on said touch pad, forms of the light inlet of at least two strips exists staggered.
When the light signal that send said smooth contact is received and identified by the light activated element at least two said optical filtering passages of the staggered light signal receiving area of length direction existence simultaneously; Said microprocessor system receives the light activated element data that signal processing module is handled; Obtain the light contact and be positioned at light signal zone; Said microprocessor system receives another light activated element data that signal processing module is handled; Obtain the light contact and be positioned at another light signal zone; Said microprocessor system is regarded as the light contact and is positioned at light signal zone and another light signal zone crossover location, and said microprocessor system will be positioned at the light signal zone association of light signal zone and another light signal zone crossover location to touch pad or on the touch pad place picture displayed.Through increasing the quantity of staggered place, under the prerequisite that does not increase light activated element quantity, can effectively improve the touch precision.
Wherein there is the overlapping region in the Width of the said light signal receiving area that on said touch pad, forms of the light inlet of at least two strips.
When the light signal that sends said smooth contact was existed light activated element at least two corresponding said optical filtering passages of at least two light signal receiving areas in the zone of overlapping to receive and identify by Width simultaneously, said microprocessor system was regarded as the overlapping region that said smooth contact is positioned at the Width of at least two said light signal receiving areas on the said touch pad.
Through to the setting of the overlapping region of Width with to the identification of the light contact in the overlapping region, can effectively improve the touch precision.
Two exist the light signal receiving area of overlapping region at Width, have the light signal receiving area of overlapping region with two other at Width, exist staggered at length direction; When the light signal of said smooth contact was received and identified by above-mentioned two pairing light activated elements in light signal receiving area simultaneously, said microprocessor system was regarded as the intersection that said smooth contact is positioned at two said overlapping regions.
Through increasing above-mentioned algorithm, can further effectively improve the touch precision.
Comprise that at least two said light signals receive head, at least two said light signals receive head and place touch pad the place ahead; The light inlet that one light signal receives at least two optical filtering passages of head is a strip, and length direction is arranged in parallel; The light inlet that another light signal receives at least two optical filtering passages of head is a strip, and length direction is arranged in parallel;
One light signal receives at least two light signal receiving areas that head forms on said touch pad, receive at least two light signal receiving areas that on said touch pad, form with another light signal and exist staggered in the longitudinal direction.
Through being set, two said light signals receive the structure that head is simplified single said light signal reception head.And hardware foundation is provided for the further system performance that improves.
The signal area exists the overlapping touch screen also to comprise a word line shape laser instrument; A said word line shape laser instrument is arranged on a side of said touch pad, and a said word line shape laser instrument forms one deck laser-emitting face parallel with said touch pad in the touch scope of said touch pad; When touching part touch touch pad, block laser-emitting face, form the light contact.When touch pad is big; A said word line shape laser instrument can be set to a plurality of; A plurality of word line shape laser instruments can be arranged on the side of touch pad, also can be provided with as required, as long as one deck laser-emitting face that an a plurality of word line shape laser instrument forms covers the touch scope of touch pad.Said signal processing module adopts the mode of timesharing scanning, and timesharing receives two said light signals and receives the reception information that hair send.Above-mentioned design can reduce the number of a word line shape laser instrument, and then reduces cost.
Also comprise a shell, said shell employing one has the shell of cartoon animals moulding; Two printing opacity mouths of arranging about said shell is provided with;
Two said printing opacity mouth places respectively are provided with a said light signal and receive head; Said printing opacity mouth can be the eye of cartoon animals moulding, and being positioned over the room increases interesting.It is inconsistent that two said light signals receive the length direction of light inlet of the optical filtering passage of arranging in the head, so that the light signal zone that mapping forms on said touch pad is rectangular arrangement.
The middle part of two said printing opacity mouths is provided with a correcting laser system, the touch area of laser instrument emission port on touch pad of correcting laser system.Said laser instrument is cross laser device or point-like laser device.
Said laser instrument is provided with a laser instrument switch, and said switch is a normal open switch.Said correcting laser system is used to calibrate makes two said light signals receive the center of the said touch-screen of centrally aligned of head.
Can be arranged to laterally zygomorphic two printing opacity mouths on the shell of cartoon animals moulding, a light signal respectively is set in laterally zygomorphic two said printing opacity mouths receive head.
Said microprocessor system adopts the microprocessor system of television set top box.The signal area of adopting the present invention to constitute exists the overlapping touch screen to carry out signal with television set top box and is connected, and with the shared microprocessor of television set top box system, realization is to the touch operation of televisor.
Said microprocessor system adopts the microprocessor system of computing machine.The signal area of adopting the present invention to constitute exists the overlapping touch screen to carry out signal with computing machine and is connected, and with computer utility microprocessor system, realization is to the touch operation of computing machine.
Said microprocessor system connects a wireless local area network communications module, needs the equipment of touch operation to carry out signal through wireless mode with the external world and is connected, and realizes the touch operation function.
Said microprocessor system connects a bluetooth communication, and the mode and the external world through Bluetooth transmission need the bluetooth equipment of touch operation to carry out signal to be connected, to realize the touch operation function.
Said microprocessor system connects an infrared communication module, and the mode and the external world through infrared transmission or infrared remote control need the infrared equipment of touch operation to carry out signal to be connected, to realize the touch operation function.
Beneficial effect: owing to adopt technique scheme, the present invention is not only simple in structure, with low cost, and can use less device, realizes the function that high precision touches.
Description of drawings
Fig. 1 is a circuit structure diagram of the present invention;
Fig. 2 is a user mode synoptic diagram of the present invention;
Fig. 3 is a kind of structural representation that light signal of the present invention receives head;
Fig. 4 is the another kind of structural representation that light signal of the present invention receives head;
Fig. 5 receives the synoptic diagram that head is associated with light signal receiving area on the touch pad for light signal shown in Figure 4;
Fig. 6 is the light signal reception header structure synoptic diagram of strip at least respectively for the light inlet of four optical filtering passages;
Fig. 7 receives the synoptic diagram that head is associated with light signal receiving area on the touch pad for light signal shown in Figure 6;
Fig. 8 receives the structural representation of head for adopting two light signals.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, further set forth the present invention below in conjunction with concrete diagram.
With reference to Fig. 1, Fig. 2, there is overlapping touch screen in the signal area, comprises a touch pad 2, a microprocessor system 11.Microprocessor system 11 connects the touch location detection module 12 of a detected touch point position, touch location detection module 12 comprise light signal receive 13 with signal processing module 14.Light signal receives 13 and is provided with light activated element 15, and light activated element 15 connects signal processing modules 14.Light signal receives 13 and places touch pad 2 the place aheads.Under the situation of touch pad 2 printing opacities, light signal receive 13 also can place touch pad 2 the rear.Light signal receives 13 and places the mode at the rear of touch pad 2 to be specially adapted to the display that shows with the rear-projection mode.
The signal area exists the overlapping touch screen also to comprise a power supply.Power supply comprises an accumulator, and accumulator connects a photoelectric cell, and photronic sensitive surface is towards touch pad 2.Photoelectric cell receives the light that touch pad 2 directions are sent, and is converted into electric energy, for system works provides electric energy, perhaps is charge in batteries.Through photoelectric cell is that total system provides the part electric energy, perhaps whole electric energy.
The signal area exists the communication mode between overlapping touch screen and controlled plant can adopt in the following mode one or more:
(1) microprocessor system 11 connects a wireless local area network communications module, needs the equipment of touch operation to carry out signal through wireless mode with the external world and is connected, and realizes the touch operation function.
(2) microprocessor system 11 connects a bluetooth communication, and mode and the external world through Bluetooth transmission need the bluetooth equipment of touch operation to carry out signal and be connected realization touch operation function.
(3) microprocessor system 11 connects an infrared communication module, and mode and the external world through infrared transmission or infrared remote control need the infrared equipment of touch operation to carry out signal and be connected realization touch operation function or distant control function.
(4) microprocessor system 11 connects a remote controller module, and microprocessor system 11 sends the telepilot receiving end that signal is given controlled plant through remote controller module.Remote controller module adopts the IR remote controller module, and infrared emission head the place ahead of IR remote controller module is provided with an astigmatism plate, light signal is launched towards periphery reduced the blind area.Be specially adapted to TV remote-control, air-conditioning remote control etc.
Microprocessor system 11 can adopt following form:
(1) directly adopts microprocessor system 11 in the controlled plant, as adopting the microprocessor system of television set top box; Adopt the microprocessor system of computing machine.Through shared CPU simplified structure, reduce cost.
(2) adopt independently microprocessor system 11, the microprocessor system 11 preferred small-sized miniature processor systems such as SCM system, ARM system that adopt.
With reference to Fig. 3, light signal receives 13 and comprises at least four optical filtering passages 131.Optical filtering passage 131 1 ends are provided with a light inlet 132, and the other end of optical filtering passage 131 is provided with light activated element 15, and the conduit wall of optical filtering passage 131 is the conduit wall with interception.Light signal receives the light inlet 132 of at least four optical filtering passages 131 of 13 towards touch pad 2.Light activated element 15 can adopt photodiode, phototriode or infrared receiving terminal.Preferred infrared receiving terminal in the concrete design, infrared receiving terminal are that infrared receiving circuit is integrated in the element and processes.General internal circuit comprises infrared monitoring diode, amplifier, the secondary device of limit, BPF., integrating circuit, comparer etc.Infrared receiving terminal can be regarded as be with the partial circuit of photodiode and signal processing module 14 in addition all circuit integrate.Therefore adopt the infrared receiving terminal can simplified system, reduce the signal Processing amount of touch location detection module 12 or omit signal processing module 14.
Light activated element 15 receives the light of light inlet 132 in the zone, so that light inlet 132 the place aheads form an effective light signal receiving area 21.Light activated element 15 in the optical filtering passage 131 is through the light signal in the light inlet 132 receiving optical signals receiving areas 21.Light signal on the touch pad 2 beyond the light signal receiving area 21; Because optical filtering passage 131 has the interception of the conduit wall of interception; Seldom received by light activated element 15; Even do not received by light activated element 15 fully, to such an extent as to the light signal beyond 15 pairs of light signal receiving areas of light activated element 21 does not respond.
When on touch pad 2, forming one can be touched the light contact 3 of position detecting module 12 identifications the time; At least one light activated element 15 that the light signal that 3 places, light contact send is touched in the position detecting module 12 receives; After signal processing module 14 is handled, produce touch signal, and touch signal is passed to microprocessor system 11.Microprocessor system 11 is regarded as the light inlet 132 pairing light signal receiving areas 21 that light contact 3 is positioned at the light activated element 15 place optical filtering passages 131 that receive light signal, and with the light signal receiving area be associated with on the touch pad 2 or touch pad 2 place's picture displayed on.Above-mentioned design is specially adapted to control electrical equipment such as televisor, air-conditioning.Light activated element 15 scan light contacts 3 are adopted in above-mentioned design, make touch location detection module 12 have remarkable advantages such as simple in structure, with low cost, that Installation and Debugging are simple.When screen is big, can adopt a plurality of light signals to receive 13.
Concrete design for optical filtering passage 131 is following:
In the concrete design, the conduit wall of optical filtering passage 131 can be provided with reflector layer, to strengthen light.Can receive the light signal that optical filtering passage 131 corresponding light signal location are sent so that guarantee optical filtering passage 131 corresponding light activated elements 15.This design is applicable to the more weak situation of light contact 3 light.
The conduit wall of optical filtering passage 131 also can be provided with dark coating or dark frosted coating, to absorb light, so that the passage 131 corresponding light activated elements 15 of avoiding filtering are received the light signal that the corresponding light signal location of other optical filtering passages is sent.This design is applicable to the stronger situation of light contact 3 light.
With reference to Fig. 3, optical filtering passage 131 inner width are: 132 width at one end of light inlet are greater than 15 width at one end of light activated element, and width at one end at one end reduces to 15 of light activated elements from 132 of light inlets gradually.Preferred light inlet 132 is an arc.At light inlet 132 is under the prerequisite of arc, and further preferred optical filtering passage 131 sections are fan-shaped.
The mode that produces light contact 3 can be following two kinds:
One, adopt luminous touch part to produce.
Produce light beam through touching part, light beam forms a light contact on touch pad 2.
Touch part and can adopt the remote touch pen, the remote touch pen adopts laser instrument, on touch pad 2, forms the light contact through laser.The remote touch pen comprises laser instrument, power supply; Also have signal generating module, power supply connects signal generating module, and signal generating module connects laser instrument; Signal generating module produces the electric signal of vibration, and drive laser is sent the laser signal with the corresponding flicker of electric signal.The remote touch pen exists the overlapping touch screen to realize the respective remote operation through Long-distance Control light contact to the signal area.The remote touch pen is provided with switch.
Touch part and can adopt the short range felt pen, the short range felt pen comprises a light-emitting component, and the light-emitting component that touches part triggering touch part when touching touch pad 2 is luminous, on touch pad 2, forms the light contact.Short range touch pad 2 comprises a shell, power supply, switch and light-emitting component, the luminous situation of switch control light-emitting component.Switch is connected with the touch end of short range felt pen, touches end trigger switch when touching touch pad 2, and light-emitting component is luminous, on touch pad 2, forms the light contact.The short range felt pen is luminous when contacting with touch pad 2, on touch pad 2, forms a smooth contact, and move with the short range felt pen the light contact, thereby realizes that through the light contact there is the touch operation of overlapping touch screen in the short range felt pen to the signal area.
Two, in touch pad the place ahead laser instrument is set
With reference to Fig. 5, the signal area exists the overlapping touch screen also to comprise a word line shape laser instrument 4.One word line shape laser instrument 4 is arranged on the bight of touch pad 2.One word line shape laser instrument 4 forms the parallel laser-emitting face of one deck and touch pad 2 in the touch scope of touch pad 2.When touching part touch touch pad 2, block laser-emitting face, form light contact 3.When touch pad 2 was big, a word line shape laser instrument 4 can be set to a plurality of, and a plurality of word line shape laser instruments 4 can be arranged on the side of touch pad 2, also can be provided with as required.As long as one deck laser-emitting face that a plurality of word line shape laser instruments 4 form covers the touch scope of touch pad 2.
Specific embodiment 1:
With reference to Fig. 4, at least four optical filtering passages 131 are arranged in order at least two rows, and 15 of light activated elements are at one end adjacent, and light inlet 132 1 ends are adjacent, make the light signal receiving area towards unanimity.
Wherein preferred, at least four optical filtering passages 131 are arranged in order into a row, and 15 of light activated elements are at one end adjacent, and 132 of light inlets are at one end adjacent.Light inlet 132 is provided with optical filter, so that the uncorrelated light signal of filtering.Light signal receives at least four light inlets 132 of 13 and adopts same optical filter, with simplified structure.
With reference to Fig. 5, there is lap in adjacent in twos light inlet 132 pairing light signal receiving areas 21, and lap is shown in dash area among the figure.
When light contact 3 is positioned at lap (dash area), have the light that at least two light activated elements 15 receive reflection of 3 places, light contact or scattering.Receive light such as three, four, five even more a plurality of light activated element 15.
When existing even number light activated element 15 to receive the light of reflection of 3 places, light contact or scattering in same row's the optical filtering passage 131; Be regarded as the middle parts that light contact 3 is positioned at the light signal zone at middle two light activated elements 15 places; Signal processing module 14 produces touch signal; And touch signal passed to microprocessor system 11; The middle part of the light signal receiving area at two light activated elements, 15 places was associated with on the touch pad 2 in the middle of microprocessor system 11 will be positioned at, and perhaps was associated with on the touch pad 2 on the picture displayed.
When existing odd number light activated element 15 to receive the light of 3 places, light contact reflection in same row's the optical filtering passage 131, be regarded as light contact 3 and be positioned at middle light activated element 15 pairing light signals zones.Signal processing module 14 produces touch signal, and touch signal is passed to microprocessor system 11.The light activated element 15 pairing light signal zone association of microprocessor system 11 in the middle of will being positioned at perhaps are associated with on the touch pad 2 on the picture displayed to touch pad 2.
Specific embodiment 2:
With reference to Fig. 6, the light inlet of at least four optical filtering passages 131 is strip respectively, comprises light inlet 1321 and horizontal light inlet 1322 longitudinally.
With reference to Fig. 7, the length direction of the light signal receiving area 21 that on touch pad 2, forms of light inlet 1321 and horizontal light inlet 1322 exists staggeredly longitudinally, and the staggered place is with shadow representation.
When the light signal that send light contact 3 is existed staggered light signal receiving area 211 corresponding at least two optical filtering passages 131 interior light activated elements 15 to receive and identify by length direction simultaneously; Microprocessor system 11 receives the light activated element data that signal processing module 14 is handled; Obtain light contact 3 and be positioned at the corresponding light signal zone of a light activated element; Microprocessor system 11 receives another light activated element data that signal processing module 14 is handled, and obtains the light contact and is positioned at the corresponding light signal zone of another light activated element.Microprocessor system 11 is regarded as light contact 3 and is positioned at light signal zone and another light signal zone crossover location 211.Microprocessor system 11 will be positioned at the light signal zone association of light signal zone and another light signal zone crossover location to touch pad 2 or on touch pad 2 place's picture displayed.Through increasing the quantity of staggered place, under the prerequisite that does not increase light activated element quantity, can effectively improve the touch precision.
Further with reference to Fig. 7, wherein there is the overlapping region in the Width of the light signal receiving area 21 that on touch pad 2, forms of the light inlet 1321 of at least two strips or light inlet 1322, like the overlapping region 212 of a plurality of light inlets 1322.
When the light signal that send light contact 3 is existed corresponding at least two the optical filtering passages 131 interior light activated elements 15 at least two light signal receiving areas in the zone 212 of overlapping to receive and identify by Width simultaneously.Microprocessor system 11 is regarded as the overlapping region 212 that light contact 3 is positioned at the Width of at least two light signal receiving areas on the touch pad 2.Through to the setting of the overlapping region 212 of Width with to the identification of the light contact 3 in the overlapping region 212, can effectively improve the touch precision.
Two exist the light signal receiving area of overlapping region 212 at Width, have the light signal receiving area of overlapping region 213 with two other at Width, exist staggered at length direction.When the light signal of light contact 3 was received and identified by the pairing light activated element 15 in above-mentioned two light signal receiving areas simultaneously, microprocessor system 11 was regarded as the intersection that light contact 3 is positioned at overlapping region 212, overlapping region 213.Through increasing above-mentioned algorithm, can further effectively improve the touch precision.
With reference to Fig. 8,, and can hardware foundation be provided for further improving system performance further in order to simplify the structure that single light signal receives head.Former light signal is received 13 be divided into two, promptly light signal receives a 13a, and light signal receives a 13b.
The light inlet that light signal receives at least two optical filtering passages of a 13a is a strip, and length direction is arranged in parallel.The light inlet that light signal receives at least two optical filtering passages of a 13b is a strip, and length direction is arranged in parallel.
With reference to Fig. 7, light signal receives at least two light signal receiving areas that a 13a forms on touch pad 2, and at least two light signal receiving areas that on touch pad 2, form with a light signal reception 13b exist staggered in the longitudinal direction.Be similar to two groups of optical filtering passages 131 that Fig. 6 had light inlet 1321, light inlet 1322, separately be arranged on two relatively independent light signals and receive on the head.
Further, the signal area exists the overlapping touch screen also to comprise a shell, and microprocessor system 11, touch location detection module 12, accumulator etc. are provided with in the enclosure.Shell employing one has the shell of cartoon animals moulding.Two printing opacity mouths of arranging about shell is provided with.Two printing opacity mouth places are provided with light signal respectively and receive a 13a, a light signal reception 13b.The printing opacity mouth can be the eye of cartoon animals moulding, and being positioned over the room increases interesting.The length direction of the light inlet of the optical filtering passage of arranging among a light signal reception 13a, the light signal reception 13b is inconsistent.Length direction can be crossing, also can further be set to vertical each other.So that the light signal zone that mapping forms on touch pad 2 is rectangular arrangement.Also can be arranged to laterally zygomorphic two printing opacity mouths on the shell of cartoon animals moulding, a light signal respectively is set in laterally zygomorphic two printing opacity mouths receive head.
The middle part of two printing opacity mouths, promptly light signal receives a 13a, light signal receives between the 13b and is provided with a correcting laser system, the touch area of laser instrument 5 emission ports on touch pad 2 of correcting laser system.Laser instrument 5 is cross laser device or point-like laser device.Laser instrument 5 is provided with a laser instrument switch, and switch is a normal open switch.The correcting laser system is used to calibrate the center that touch-screen 2 is aimed at the center that makes two light signals receive head as far as possible.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the instructions just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (12)
1. there is the overlapping touch screen in the signal area; Comprise a touch pad, a microprocessor system; Said microprocessor system connects the touch location detection module of a detected touch point position, it is characterized in that, said touch location detection module comprises that light signal receives head and signal processing module; Said light signal receives head and is provided with light activated element, and said light activated element connects said signal processing module;
Said light signal receives head and comprises at least four optical filtering passages; Said optical filtering passage one end is provided with a light inlet, and the other end of said optical filtering passage is provided with said light activated element, and the conduit wall of said optical filtering passage is the conduit wall with interception;
At least four optical filtering passages; Said light signal receives head and places touch pad the place ahead; The light inlet of at least four optical filtering passages of said light signal reception head is towards said touch pad; On said touch pad, form corresponding light signal receiving area, there is lap in formed at least two light signal receiving areas;
On said touch pad, forming one can be by the light contact of said touch location detection module identification; And at least four optical filtering passages; When the said light activated element at least two optical filtering passages receives the light of said smooth contact place's reflection, be regarded as the light contact and be positioned at least two said optical filtering passages form corresponding light signal receiving area on touch pad overlapping region.
2. there is the overlapping touch screen in signal area according to claim 1; It is characterized in that; When forming one on the said touch pad can be by the light contact of said touch location detection module identification the time; The light signal that place, said smooth contact sends is received by at least one the said light activated element in the said touch location detection module, handles back generation touch signal through signal processing module, and touch signal is passed to said microprocessor system; Said microprocessor system is regarded as the pairing light signal of the light inlet receiving area that said smooth contact is positioned at the light activated element place optical filtering passage that receives said light signal, and with the light signal receiving area be associated with on the said touch pad or touch pad place picture displayed on; Said light activated element adopts infrared receiving terminal.
3. there is the overlapping touch screen in signal area according to claim 1; It is characterized in that; The width of said optical filtering channel interior is: said light inlet width at one end greater than said light activated element width at one end, and width at one end at one end reduces to said light activated element from said light inlet gradually.
4. there is overlapping touch screen in signal area according to claim 3, it is characterized in that at least four said optical filtering passages are arranged in order at least two rows, and said light activated element institute is at one end adjacent, and said light inlet institute is at one end adjacent; At least four said optical filtering passages light inlet be strip, wherein the length direction of the said light signal receiving area that on said touch pad, forms of the light inlet of at least two strips exists staggered.
5. there is the overlapping touch screen in signal area according to claim 2, it is characterized in that, comprises that at least two said light signals receive head, and at least two said light signals receive head and place touch pad the place ahead; The light inlet that one light signal receives at least two optical filtering passages of head is a strip, and length direction is arranged in parallel; The light inlet that another light signal receives at least two optical filtering passages of head is a strip, and length direction is arranged in parallel;
One light signal receives at least two light signal receiving areas that head forms on said touch pad, receive at least two light signal receiving areas that on said touch pad, form with another light signal and exist staggered in the longitudinal direction.
6. there is the overlapping touch screen in signal area according to claim 3; It is characterized in that; When existing a plurality of said light activated elements to receive the light of said smooth contact place's reflection in same row's the optical filtering passage; Be regarded as the middle part of light contact between the light signal zone at two said light activated element places at a plurality of said light activated elements two ends; Said signal processing module produces touch signal, and touch signal is passed to said microprocessor system, and the affiliated light contact position that said microprocessor system will judge is associated with on the said touch pad.A plurality of said light activated elements are meant plural said light activated element.
7. there is the overlapping touch screen according to claim 4 or 5 described signal areas; It is characterized in that; When the light signal that send said smooth contact is received and identified by the light activated element at least two said optical filtering passages of the staggered light signal receiving area of length direction existence simultaneously; Said microprocessor system receives the light activated element data that signal processing module is handled; Obtain the light contact and be positioned at light signal zone; Said microprocessor system receives another light activated element data that signal processing module is handled; Obtain the light contact and be positioned at another light signal zone, said microprocessor system is regarded as the light contact and is positioned at light signal zone and another light signal zone crossover location, and said microprocessor system will be positioned at the light signal zone association of light signal zone and another light signal zone crossover location to touch pad or on the touch pad place picture displayed.Through increasing the quantity of staggered place, under the prerequisite that does not increase light activated element quantity, can effectively improve the touch precision.
8. there is the overlapping touch screen in signal area according to claim 7, it is characterized in that there is the overlapping region in the Width of the said light signal receiving area that the light inlet of at least two strips forms on said touch pad; When the light signal that sends said smooth contact was existed light activated element at least two corresponding said optical filtering passages of at least two light signal receiving areas in the zone of overlapping to receive and identify by Width simultaneously, said microprocessor system was regarded as the overlapping region that said smooth contact is positioned at the Width of at least two said light signal receiving areas on the said touch pad.
9. there is the overlapping touch screen in signal area according to claim 8; It is characterized in that; Two exist the light signal receiving area of overlapping region at Width, have the light signal receiving area of overlapping region with two other at Width, exist staggered at length direction; When the light signal of said smooth contact was received and identified by above-mentioned two pairing light activated elements in light signal receiving area simultaneously, said microprocessor system was regarded as the intersection that said smooth contact is positioned at two said overlapping regions.
10. there is the overlapping touch screen according to claim 1,2,3,4,5 or 6 described signal areas; It is characterized in that; The signal area exists the overlapping touch screen also to comprise a word line shape laser instrument; A said word line shape laser instrument is arranged on a side of said touch pad, and a said word line shape laser instrument forms one deck laser-emitting face parallel with said touch pad in the touch scope of said touch pad; When touching part touch touch pad, block laser-emitting face, form the light contact.
11. have the overlapping touch screen according to claim 1,2,3,4,5 or 6 described signal areas; It is characterized in that; Said microprocessor system connects a bluetooth communication; Mode through Bluetooth transmission needs the bluetooth equipment of touch operation to carry out signal with the external world to be connected, to realize the touch operation function.
12. have the overlapping touch screen according to claim 1,2,3,4,5 or 6 described signal areas; It is characterized in that; Said microprocessor system connects a remote controller module, and said microprocessor system sends the telepilot receiving end that signal is given controlled plant through remote controller module; Said remote controller module adopts the IR remote controller module, and infrared emission head the place ahead of said IR remote controller module is provided with an astigmatism plate, light signal is launched towards periphery reduced the blind area.
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| CN201110150361.0A CN102819354B (en) | 2011-06-07 | 2011-06-07 | There is overlapping touch-screen in signal area |
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| CN201110150361.0A CN102819354B (en) | 2011-06-07 | 2011-06-07 | There is overlapping touch-screen in signal area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113885735A (en) * | 2021-11-03 | 2022-01-04 | 业成科技（成都）有限公司 | Touch display device, control method thereof and electronic device |
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| CN101167042A (en) * | 2003-11-25 | 2008-04-23 | 3M创新有限公司 | Light emitting stylus and user input device using same |
| CN101344827A (en) * | 2008-08-22 | 2009-01-14 | 李兴文 | Optical touch screen and touch pen |
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| CN101167042A (en) * | 2003-11-25 | 2008-04-23 | 3M创新有限公司 | Light emitting stylus and user input device using same |
| CN101128794A (en) * | 2005-01-12 | 2008-02-20 | 辛克光学公司 | Handheld vision based absolute pointing system |
| CN101344827A (en) * | 2008-08-22 | 2009-01-14 | 李兴文 | Optical touch screen and touch pen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113885735A (en) * | 2021-11-03 | 2022-01-04 | 业成科技（成都）有限公司 | Touch display device, control method thereof and electronic device |
| CN113885735B (en) * | 2021-11-03 | 2023-03-21 | 业成科技（成都）有限公司 | Touch display device, control method thereof and electronic device |
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| CN102819354B (en) | 2017-08-11 |
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