CN107145264A - A kind of optical signal receives head and its application - Google Patents
A kind of optical signal receives head and its application Download PDFInfo
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- CN107145264A CN107145264A CN201710191452.6A CN201710191452A CN107145264A CN 107145264 A CN107145264 A CN 107145264A CN 201710191452 A CN201710191452 A CN 201710191452A CN 107145264 A CN107145264 A CN 107145264A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- General Engineering & Computer Science (AREA)
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Abstract
A kind of optical signal receives head and its application, is related to a kind of touch-screen.Optical touch screen, including touch pad, touch location detection module, microprocessor system, touch location detection module includes signal processing module, and touch location detection module also includes optical signal and receives head, optical signal receives head and is provided with light-sensitive element, light-sensitive element connection signal processing module；Optical signal, which receives head, includes at least four light-filtering channels；Light-filtering channels one end is provided with a light inlet, and the other end is provided with light-sensitive element；Light-sensitive element receives light inlet towards the light in region, so as to form an effective optical signal receiving area in front of light inlet；The light inlet of four light-filtering channels forms at least four optical signal receiving areas towards touch pad position in front of touch pad；Due to using above-mentioned technical proposal, the present invention is not only simple in structure, with low cost, and can use less device.
Description
The applying date of the original application of the divisional application is：On June 7th, 2011, Application No.：2011101503748, title
For：Optical touch screen system.
Technical field
The present invention relates to electronic equipment, more particularly to a kind of touch-screen.
Background technology
Growing with multimedia technology, touch-screen applications are more and more extensive, such as telecommunication bureau, bank, city street corner
Information inquiry, Industry Control, multimedia teaching etc..Touch-screen has fast sturdy and durable, reaction speed, saving space, is easy to
The advantages of exchange.Using this technology, as long as the picture and text that user is lightly touched on display screen with finger or other touch parts are just
Operation can be realized, so that man-machine interaction is more simple and direct, user is greatly facilitated.
Existing touch-screen mainly uses infrared touch panel.Infrared touch panel is steady with performance relative to other touch-screens
The series of advantages such as fixed, strong antijamming capability, long lifespan, precision height.Almost with overwhelming advantage, other touches are gradually captured
The market of screen.But infrared touch panel still suffers from fatefulue weakness and is difficult to overcome.Infrared emission pipe is filled on the outside of screen in addition,
Inconvenience use on the compactedness of structure, small-sized screen is had influence on, such as inconvenience is with the screen of mobile phone and palm PC.And
And infrared touch panel cost is still higher.
The content of the invention
It is an object of the invention to provide a kind of optical touch screen, to solve above-mentioned technical problem.
The present invention also aims to provide a kind of optical signal to receive head.
Technical problem solved by the invention can be realized using following technical scheme：
A kind of optical signal receives head, it is characterised in that the optical signal, which receives head, includes at least four light-filtering channels；
Described light-filtering channels one end is provided with a light inlet, and the other end of the light-filtering channels is provided with light-sensitive element, the filter
The conduit wall of optical channel is the conduit wall being made up of light screening material；
The light-sensitive element receives the light inlet towards the light in region, so that one is formed in front of the light inlet has
The optical signal receiving area of effect；
The front of the position of the light inlet direction of four light-filtering channels forms at least four optical signal receiving areas；And
Four optical signal receiving areas are not exclusively overlapping or completely not overlapping.
Optical touch screen, including a touch pad, the touch location detection module of a detected touch point position, a microprocessor
System, the touch location detection module includes a signal processing module, it is characterised in that the touch location detection module is also
Head is received including an optical signal, the optical signal receives head and is provided with light-sensitive element, and the light-sensitive element is connected at the signal
Manage module；
The optical signal, which receives head, includes at least four light-filtering channels；
Described light-filtering channels one end is provided with a light inlet, and the other end of the light-filtering channels is provided with the light-sensitive element, institute
The conduit wall for stating light-filtering channels is the conduit wall being made up of light screening material；
The light-sensitive element receives the light inlet towards the light in region, so that one is formed in front of the light inlet has
The optical signal receiving area of effect；
The light inlet of four light-filtering channels towards the touch pad position, formed in front of the touch pad to
Few four optical signal receiving areas；And four optical signal receiving areas are not exclusively overlapping or completely not overlapping；
A luminous point that can be recognized by the touch location detection module is formed on the touch pad (using luminous point as touch
Point), the optical signal sent at the luminous point is received by least one described light-sensitive element in the touch location detection module
Afterwards, touch signal is produced, and touch signal is passed into the microprocessor system；The microprocessor system is considered as institute
The optical signal corresponding to the light inlet of the light-filtering channels where luminous point is located at the light-sensitive element for receiving the optical signal is stated to connect
Receive in region, and optical signal receiving area is associated with the touch pad.
Above-mentioned design can be easy to control without reference to background picture, is particularly suitable for use in the electrical equipment such as control television set, air-conditioning.
Above-mentioned design uses light-sensitive element scanning point, touch location detection module is had simple in construction, with low cost, installation and debugging
It is simple to wait remarkable advantage.
The light-sensitive element can use infrared receiving terminal.To simplify the signal of system and reduction touch location detection module
Treating capacity.
Width inside the light-filtering channels is：The light inlet width at one end be more than where the light-sensitive element
The width of one end, and width is gradually reduced at one end to the light-sensitive element at one end from the light inlet.
Light-filtering channels are arranged in order described at least four, and arrangement mode is adjacent at one end for light-sensitive element institute, described
Light inlet institute is adjacent at one end.Above-mentioned design makes optical signal receiving area towards unanimously.
Light-filtering channels are arranged in order in a row described at least four.Optical signal receives the avris that head is arranged on touch pad, enters
Row scanning point.
Light-filtering channels described at least four are arranged in order at least two rows.Optical signal receives head and is arranged on before touch pad
Side, is scanned luminous point.
The light-filtering channels are flat sector, and the sector is parallel with plane where the touch pad；At least four
The light-filtering channels are sequentially arranged in the plane parallel with plane where the touch pad, and shape is in a row.
The light-filtering channels can also be hollow tubular, and light-filtering channels described at least four are sequentially arranged in be touched with described
In the parallel plane of plane where plate, shape is in a row.
The light inlet of the light-filtering channels exists towards the touch pad, corresponding optical signal receiving area correspondence (mapping)
On the touch pad.
The light-filtering channels are taper, and the light-filtering channels are pyramid.
The light inlet is provided with optical filter.To filter out irrelevant optical signal.
The optical signal receives light inlet described at least four of head and uses same optical filter.
The passage of the light-filtering channels is kept away provided with reflector layer, to strengthen light.To ensure that light-filtering channels are corresponding
Light-sensitive element can receive the optical signal sent at the corresponding optical signal region of light-filtering channels.
The passage of the light-filtering channels is kept away provided with dark coating, to absorb light.To avoid light-filtering channels correspondence
Light-sensitive element receive the optical signal sent at the corresponding optical signal region of other light-filtering channels.
The microprocessor system uses the microprocessor system of television set top box.The present invention optical touch screen with
Television set top box carries out signal connection, and shares microprocessor system with television set top box, and realization is touched to television set
Touch operation.
The microprocessor system uses the microprocessor system of computer.The optical touch screen of the present invention is carried out with computer
Signal is connected, and shares microprocessor system with computer, realizes the touch operation to computer.
The microprocessor system connects a wireless local area network communications module, wirelessly needs to touch with the external world
The equipment for touching operation carries out signal connection, realizes touch operation function.
The microprocessor system connects a bluetooth communication, needs touch with the external world by way of Bluetooth transmission
The bluetooth equipment of operation carries out signal connection, realizes touch operation function.
The microprocessor system connects an infrared communication module, needs touch with the external world by way of Infrared Transmission
The infrared equipment of operation carries out signal connection, realizes touch operation function.
When exist in the light-filtering channels of same row light-sensitive element described in even number receive at the luminous point reflect light
When, it is considered as middle part of the luminous point positioned at the optical signal region where middle two light-sensitive elements, the signal processing module production
Raw touch signal, and touch signal is passed into the microprocessor system, the microprocessor system will be located at centre
It is associated with the middle part of optical signal receiving area where two light-sensitive elements on the touch pad.
When exist in the light-filtering channels of same row light-sensitive element described in odd number receive at the luminous point reflect light
When, it is considered as the optical signal region that luminous point is located at where middle light-sensitive element, the signal processing module produces touch signal, and
Touch signal is passed into the microprocessor system, the microprocessor system is by where middle light-sensitive element
Optical signal region be associated with the touch pad.
In order to further improve touch-screen precision, same row at least two described in the light inlets of light-filtering channels touched described
At least two optical signal receiving areas are formed in front of template, and when there is overlapping region, in light-filtering channels described at least two
When light-sensitive element receives the optical signal sent at the luminous point and response, the microprocessor system is considered as the luminous point position
Overlapping region in two signal receiving areas.The overlapping region can be that two optical signal receiving areas partly overlap
Constitute or three, four or more optical signal receiving areas partly overlap composition.
Head is received including optical signal described at least two, optical signal described at least two receives the optical signal area corresponding to head
Domain, which exists, to intersect.
Optical signal described at least two receives the both sides that head is separately positioned on the touch pad.
Optical signal described at least two receives the front that head is separately positioned on the touch pad.
The signal processing module handles an optical signal and receives header, obtains luminous point positioned at an optical signal region；It is described
Another optical signal of signal processing module processing receives header, obtains luminous point positioned at another optical signal region, the signal transacting
Module produces touch signal, and touch signal passed into the microprocessor system, and the microprocessor system is by position
It is associated with the touch pad, and then determines in the optical signal region of an optical signal region and another optical signal region crossover location
The position of luminous point on a touchpad.
The optical signal of one luminous point is received the photosensitive member of light-filtering channels described at least two of the same row of head by an optical signal
Part is received and identified；Also the light-sensitive element that at least one light-filtering channels of head are received by another optical signal is received and identified；
Then, the microprocessor system is judged as that the luminous point is located at an optical signal and receives optical filtering described at least two of a same row
The overlapping region in the optical signal region of passage, the optical signal area of at least one light-filtering channels of head is received with another optical signal
The overlapping region in domain.
By increasing above-mentioned algorithm, touch precision can be further effectively improved.
Also include one and touch part, touch part and produce light beam, the light beam forms a luminous point on the touch pad.It is described
Laser can be used by touching the light beam of part generation, and luminous point is formed on a touchpad by laser.
The touch part can use remote touch pen, and the remote touch pen includes laser, power supply, also with signal
Generation module, power supply connection signal generating module, signal generating module connecting laser, signal generating module produces the electricity of vibration
Signal, and drive laser to send the laser signal of the flicker corresponding with electric signal.Remote touch pen passes through remote control light
Point, corresponding remote operation is realized to optical touch screen.Remote touch pen is provided with switch.
Touching part includes a light-emitting component, touches the light-emitting component hair that part triggering when touching the touch pad touches part
Light, forms luminous point on a touchpad.
The touch part can use short range felt pen, and the short range touch pad includes a shell, power supply, switch and luminous member
Part, the luminous situation of switch control light-emitting component；Switch is connected with the touch end of short range felt pen, is touched end and is being touched touch pad
When trigger switch, light-emitting component light, form luminous point on a touchpad.Short range felt pen lights when being contacted with touch pad,
A luminous point is formed on touch pad, luminous point is moved with the movement of short range felt pen, so as to realize short range felt pen pair by luminous point
The touch operation of optical touch screen.
Also include linear laser device, the linear laser device is arranged on the side of the touch pad, the linear laser device
One layer of laser emitting line parallel with the touch pad is formed in the range of the touch of the touch pad；
When touching part touch touch pad, laser emitting line is blocked, luminous point is formed.
The linear laser device uses a wordline shape laser, and a wordline shape laser can be arranged on the optical signal and connect
Receive the offside of head.When touch pad is larger, the wordline shape laser could be arranged to multiple, multiple wordline shape lasers
The side of touch pad can be arranged on, can also be arranged as required to, as long as one layer of the formation of multiple wordline shape lasers is swashed
Light emergent ray covers the touch scope of touch pad.
The one wordline shape laser is at least two, and number is identical with the number that the optical signal receives head, described
One wordline shape laser is arranged on the offside that the optical signal receives head, and a wordline shape laser described at least two is sent
The flicker frequency of light is different, and the optical signal receives head and receives the laser that a wordline shape laser of offside is sent respectively.By one
After the frequency of wordline shape laser is tuned to open, each touch location detection module can receive corresponding wordline shape laser, complete
The scanning of luminous point.
It is at least two that the optical signal, which receives head, and the wordline shape laser is one, as long as this wordline shape swashs
One layer of laser emitting line of light device formation covers the touch scope of touch pad.The signal processing module uses Time share scanning
Mode, timesharing receives optical signal described at least two and receives the receive information sent of hair.Above-mentioned design can reduce linear sharp
The number of light device, and then reduce cost.
Beneficial effect：Due to using above-mentioned technical proposal, the present invention is not only simple in structure, with low cost, and can use
Less device, realizes the function that high accuracy is touched.
Brief description of the drawings
Fig. 1 is a kind of structural representation that optical signal of the present invention receives head；
Fig. 2 is another structural representation that optical signal of the present invention receives head；
Fig. 3 is a kind of structural representation of the invention；
Fig. 4 is another structural side view of the invention；
Fig. 5 is another structural representation of the invention；
Fig. 6 is another structural representation of the invention；
Fig. 7 is another structural representation of the invention；
Fig. 8 is another structural representation of the invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction, which is specifically illustrating, is expanded on further the present invention.
Referring to figs. 1 to Fig. 8, optical touch screen, including a touch pad 1, the touch location detection mould of a detected touch point position
Block, a microprocessor system, touch location detection module include a signal processing module, and touch location detection module also includes
One optical signal receives first 2, and optical signal receives first 2 and is provided with light-sensitive element, light-sensitive element connection signal processing module.Optical signal connects
Receiving first 2 includes at least four light-filtering channels 21.The one end of light-filtering channels 21 is provided with a light inlet, and the other end of light-filtering channels 21 is provided with
Light-sensitive element 22, the conduit wall of light-filtering channels 21 is the conduit wall being made up of light screening material.Light-sensitive element 22 receives light inlet court
Light into region, so as to form an effective optical signal receiving area in front of light inlet.Four light-filtering channels 21 enter light
Mouth forms at least four optical signal receiving areas towards the position of touch pad 1 in the front of touch pad 1.And four optical signals connect
Receive region not exclusively overlapping or completely not overlapping.
A luminous point 3 that can be recognized by the touch location detection module is formed on touch pad 1, is touch point with luminous point 3.
After the optical signal sent at luminous point 3 is received by least one light-sensitive element 22 in touch location detection module, produce and touch letter
Number, and touch signal is passed into microprocessor system.Light-sensitive element 22 can use infrared receiving terminal.With simplify system and
Reduce the signal transacting amount of touch location detection module.
Each light-sensitive element 22 in detection module constantly Time share scanning luminous point 3 can whether there is, and existence position.
It is right positioned at the light inlet institute for the place light-filtering channels 21 of light-sensitive element 22 for receiving optical signal that microprocessor system is considered as luminous point 3
In the optical signal receiving area answered, and optical signal receiving area is associated with touch pad 1.Above-mentioned design can be without reference to background
Picture, it is easy to control, it is particularly suitable for use in the electrical equipment such as control television set, air-conditioning.Above-mentioned design uses the scanning point of light-sensitive element 22
3, the remarkable advantage such as make touch location detection module have simple in construction, with low cost, installation and debugging simple.
Width inside reference picture 1, Fig. 2, light-filtering channels 21 is：Light inlet width at one end be more than light-sensitive element 22
Width at one end, and width is gradually reduced at one end to light-sensitive element 22 at one end from light inlet.At least four filters
Optical channel 21 is arranged in order, and arrangement mode is adjacent at one end for the institute of light-sensitive element 22, and light inlet institute is adjacent at one end.
Reference picture 1, Fig. 3, at least four light-filtering channels 21 are arranged in order in a row.Realize that optical signal receives first 2 and is arranged on
The avris of touch pad 1, is scanned luminous point 3.Light-filtering channels 21 are flat sector, and sector is put down with the place plane of touch pad 1
OK；At least four light-filtering channels 21 are sequentially arranged in the plane parallel with the place plane of touch pad 1, and shape is in a row.Filter logical
Road 21 can also be hollow tubular, and at least four light-filtering channels 21 are sequentially arranged in the plane parallel with the place plane of touch pad 1
On, shape is in a row.First 2 are received provided with an optical signal at reference picture 3, an avris of touch pad 1, optical signal receives first 2 bag
Include four light-sensitive elements 22, four light-sensitive elements 22 correspondence optical signal region 1a, optical signal region 1b, light letter on touch pad 1
Number region 1c, optical signal region 1d.When the luminous point 3 for touching part formation is at the 1a of optical signal region, light-sensitive element 2a is received
The light reflected to luminous point 3, signal processing module receives the receive information of light-sensitive element 2a transmissions, determines that touch signal is believed in light
In the range of number region 1a.
Reference picture 2, Fig. 4, at least four light-filtering channels 21 are arranged in order at least two rows.Realize that optical signal receives first 2 and set
Put in the front of touch pad 1, be scanned luminous point 3.The light inlet of light-filtering channels 21 is towards touch pad 1, corresponding optical signal
Receiving area correspondence (mapping) is on touch pad 1.Light-filtering channels 21 are taper, and light-filtering channels 21 are pyramid.
Light inlet is provided with optical filter.To filter out irrelevant optical signal.At least four of optical signal reception first 2 enter light
Mouth uses same optical filter.The passage of light-filtering channels 21 is kept away provided with reflector layer, to strengthen light.To ensure 21 pairs of light-filtering channels
The light-sensitive element 22 answered can receive the optical signal sent at the corresponding optical signal region of light-filtering channels 21.The passage of light-filtering channels 21
Keep away provided with dark coating, to absorb light.To avoid the corresponding light-sensitive element 22 of light-filtering channels 21 from receiving other light-filtering channels
The optical signal sent at 21 corresponding optical signal regions.
Microprocessor system uses the microprocessor system of television set top box.The optical touch screen and TV of the present invention
Machine set top box carries out signal connection, and shares microprocessor system with television set top box, realizes that the touch to television set is grasped
Make.Microprocessor system uses the microprocessor system of computer.The optical touch screen of the present invention carries out signal with computer and is connected,
And microprocessor system is shared with computer, realize the touch operation to computer.Microprocessor system connects a wireless local
Network Communication module, is wirelessly connected with the extraneous equipment progress signal for needing touch operation, realizes touch operation work(
Energy.Microprocessor system connects a bluetooth communication, and the indigo plant of touch operation is needed with the external world by way of Bluetooth transmission
Tooth equipment carries out signal connection, realizes touch operation function.Microprocessor system connects an infrared communication module, by infrared
The mode of transmission is connected with the extraneous infrared equipment progress signal for needing touch operation, realizes touch operation function.
When there is even number light-sensitive element 22 and receive the light reflected at luminous point 3, it is considered as luminous point 3 and is located at middle two
The middle part in the optical signal region where light-sensitive element 22, signal processing module produces touch signal, and touch signal is passed to
Microprocessor system, microprocessor system is by the optical signal receiving area where middle two light-sensitive elements 22
Portion is associated with touch pad 1.For example in Fig. 5, luminous point 3 is located at optical signal region 1a and optical signal region 1b medium position, light
Quick element 2a and light-sensitive element 2b receive the light of the reflection of luminous point 3, and signal processing module receives light-sensitive element 2a and light respectively
The receive information that quick element 2b is sent, according to above-mentioned determination methods, determines optical signal region 1a of the touch signal on touch pad 1
With optical signal region 1b middle part.
When there is odd number light-sensitive element 22 and receive the light reflected at luminous point 3, it is considered as luminous point 3 and is located at middle light
Optical signal region where quick element 22, signal processing module produces touch signal, and touch signal is passed into miniature processing
Device system, microprocessor system will be associated with touch pad 1 positioned at the optical signal region where middle light-sensitive element 22.Example
As in Fig. 6, although luminous point 3 is located at the 1b of optical signal region, but light-sensitive element 2a, light-sensitive element 2b, light-sensitive element 2c are received
The light reflected to luminous point 3, signal processing module receives what light-sensitive element 2a, light-sensitive element 2b, light-sensitive element 2c were sent respectively
Receive information, according to above-mentioned determination methods, determines touch signal in the optical signal region 1b models where middle light-sensitive element 2b
In enclosing.
In order to further improve touch-screen precision, the light inlet of at least two light-filtering channels 21 of same row is in touch pad 1
Front forms at least two optical signal receiving areas, and when there is overlapping region, the photosensitive member at least two light-filtering channels 21
When part 22 receives the optical signal sent at luminous point 3 and response.Microprocessor system is considered as luminous point 3 and received positioned at two signals
The overlapping region in region.Overlapping region can be two optical signal receiving areas partly overlap composition or three, four
Or more optical signal receiving areas partly overlap composition.
Reference picture 7, the present invention can include at least two optical signals and receive first 2, and it is right that at least two light meet first 2 institute of signal receipts
The optical signal region answered, which exists, to intersect.At least two optical signals receive first 2 both sides for being separately positioned on touch pad 1.At least two
Optical signal receives first 2 fronts for being separately positioned on touch pad 1.Signal processing module handles the information that an optical signal receives first 2, obtains
It is located at an optical signal region to luminous point 3, another optical signal of signal processing module processing receives the information of head, obtains luminous point 3 and be located at
Another optical signal region, signal processing module (or microprocessor system) be considered as luminous point 3 positioned at an optical signal region with it is another
Optical signal region crossover location, signal processing module produces touch signal.And touch signal is passed into microprocessor system,
Microprocessor system will be associated with tactile positioned at the optical signal region in an optical signal region and another optical signal region crossover location
In template 1, and then determine position of the luminous point 3 on touch pad 1.
For example in Fig. 7, two side Jiao Chu of touch pad 1 are respectively equipped with an optical signal and receive first 2, and each optical signal connects
Receiving first 2 includes four light-sensitive elements.Four light-sensitive elements that the optical signal in left side receives first 2 form optical signal on touch pad 1
Region 1a, optical signal region 1b, optical signal region 1c, optical signal region 1d.The optical signal on right side receives first 2 four photosensitive members
Part forms optical signal region 1e, optical signal region 1f, optical signal region 1g, optical signal region 1h on touch pad 1.Signal transacting
The optical signal that module first handles left side receives the receive information that the light-sensitive element in first 2 is sent, and obtains luminous point 3 positioned at optical signal area
In the range of the 1b of domain.Then, the optical signal on the right side of signal processing module processing receives the reception letter that the light-sensitive element in first 2 is sent
Breath, obtains luminous point 3 in the range of the 1g of optical signal region.Finally, signal processing module determines that touch signal is located at optical signal area
Domain 1b and optical signal region 1g overlapping.
The optical signal of one luminous point 3 is received the photosensitive member of at least two light-filtering channels 21 of first 2 same row by an optical signal
Part 22 is received and identified.Also the light-sensitive element that at least one light-filtering channels of head are received by another optical signal is received and identified.Then,
Microprocessor system is judged as that luminous point 3 is located at the light letter that an optical signal receives at least two light-filtering channels 21 of first 2 same row
The overlapping region in number region, the overlapping region in the optical signal region of at least one light-filtering channels of head is received with another optical signal.
When the light-sensitive element that another optical signal receives at least two light-filtering channels of head is received and identified.Position residing for luminous point
Put and be also, another optical signal receives the overlapping region that head can also be the optical signal region of two light-filtering channels.
The formation of luminous point 3 can take various forms, such as touch part and produce light beam, light beam forms one on touch pad 1
Individual luminous point 3.Laser can be used by touching the light beam of part generation, and luminous point 3 is formed on touch pad 1 by laser.Touching part can be with
Using remote touch pen, remote touch pen includes laser, power supply, and also with signal generating module, power supply connects signal
Module, signal generating module connecting laser, signal generating module produces the electric signal of vibration, and drives laser to send and electricity
The laser signal of the corresponding flicker of signal.Remote touch pen is realized corresponding remote by remote control luminous point 3 to optical touch screen
Journey is operated.Remote touch pen is provided with switch.
Touching part includes a light-emitting component, and the light-emitting component that the triggering when touching touch pad 1 of touch part touches part lights,
Luminous point 3 is formed on touch pad 1.Short range felt pen can be used by touching part, and short range felt pen includes a shell, power supply, switch and hair
Optical element, the luminous situation of switch control light-emitting component；Switch is connected with the touch end of short range felt pen, is touched end and is touched in touch
Trigger switch during template 1, light-emitting component is lighted, and luminous point 3 is formed on touch pad 1.Short range felt pen with touch pad 1 when contacting
It is luminous, a luminous point 3 is formed on touch pad 1, luminous point 3 is moved with the movement of short range felt pen, so as to be realized closely by luminous point 3
Touch operation of the journey felt pen to optical touch screen.
Reference picture 3, Fig. 5, Fig. 6, in addition to linear laser device 4, linear laser device 4 are arranged on the side of touch pad 1, linear
Laser 4 forms one layer of laser emitting line parallel with touch pad 1 in the range of the touch of touch pad 1.Linear laser device 4 is preferred
One wordline shape laser, when touching part touch touch pad 1, blocks laser emitting line, forms luminous point 3.Linear laser device 4 can be with
It is arranged on the offside that optical signal receives first 2.When touch pad 1 is larger, linear laser device 4 could be arranged to it is multiple, it is multiple linear
Laser 4 can be arranged on the side of touch pad 1, can also be arranged as required to, as long as the one of the formation of multiple linear laser devices 4
Layer laser emitting line covers the touch scope of touch pad 1.Reference picture 7, linear laser device 4 be at least two, and number with
The number that optical signal receives first 2 is identical, and linear laser device 4 is arranged on the offside that optical signal receives first 2, at least two linear lasers
The frequency of device 4 is different, and optical signal receives the laser that the first 2 linear laser devices 4 for receiving offside respectively are sent.By linear laser device 4
Frequency tune to open after, each touch location detection module can receive corresponding linear laser device 4, complete the scanning of luminous point 3.Reference
Fig. 8, it is at least two that optical signal, which receives first 2, and linear laser device 4 is one, as long as one layer of laser of the formation of linear laser device 4 goes out
Ray covers the touch scope of touch pad 1.Signal processing module is by the way of Time share scanning, and timesharing receives at least two
Optical signal receives first 2 receive informations sent.Above-mentioned design can reduce the number of linear laser device 4, and then reduce cost.Figure
In 8, first 2, a linear laser device 4 are received using three optical signals.
The light-sensitive element that optical signal of the present invention is received in first 2 is arranged on more, touches that precision is higher, optical signal of the present invention connects
Receive first 2 be arranged on it is more, touch precision it is also higher.Such as, an optical signal 1) is set to receive first 2, optical signal is set in receiving first 2
Four light-sensitive elements are put, then four optical signal regions are formed in front of touch pad.An optical signal is set to receive first 2, optical signal connects
Provided with n light-sensitive element in receiving first 2, then n optical signal region is formed in front of touch pad.2) two optical signals are set to receive first 2,
Each optical signal is provided with n light-sensitive element in receiving first 2, then n × n optical signal region is formed in front of touch pad.Set four
Optical signal receives first 2, and each optical signal is provided with n light-sensitive element in receiving first 2, then n is formed in front of touch pad4Individual optical signal area
Domain.So, touch pad can recognize n4Individual luminous point, makes the present invention use simple structure, realizes high-precision touch function.
When the present invention touch pad 1 be widescreen or mosaic screen when, optical signal receive first 2 could be arranged to it is multiple, and light believe
Number receiving first 2 can be arranged on the side edge of touch pad 1, can also be set at the middle part of touch pad 1 or other lateral locations
Optical signal receives first 2, so that at least one in the light-sensitive element of each optical signal reception first 2 can receive the luminous point 3 at touch pad.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (9)
1. a kind of optical signal receives head, it is characterised in that the optical signal, which receives head, includes at least four light-filtering channels；
Described light-filtering channels one end is provided with a light inlet, and the other end of the light-filtering channels is provided with light-sensitive element, and the optical filtering is led to
The conduit wall in road is the conduit wall being made up of light screening material；
The light-sensitive element receives the light inlet towards the light in region, so that it is effective that one is formed in front of the light inlet
Optical signal receiving area；
The front of the position of the light inlet direction of four light-filtering channels forms at least four optical signal receiving areas；And four
Optical signal receiving area is not exclusively overlapping or completely not overlapping.
2. optical touch screen, including a touch pad, the touch location detection module of a detected touch point position, a microprocessor system
System, the touch location detection module includes a signal processing module, it is characterised in that the touch location detection module is also wrapped
Include an optical signal and receive head, the optical signal receives head and is provided with light-sensitive element, and the light-sensitive element connects the signal transacting
Module；
The optical signal, which receives head, includes at least four light-filtering channels；
Described light-filtering channels one end is provided with a light inlet, and the other end of the light-filtering channels is provided with the light-sensitive element, the filter
The conduit wall of optical channel is the conduit wall being made up of light screening material；
The light-sensitive element receives the light inlet towards the light in region, so that it is effective that one is formed in front of the light inlet
Optical signal receiving area；
The light inlet of four light-filtering channels forms at least four towards the touch pad position in front of the touch pad
Individual optical signal receiving area；And four optical signal receiving areas are not exclusively overlapping or completely not overlapping；
The light sent at a luminous point that can be recognized by the touch location detection module, the luminous point is formed on the touch pad
After signal is received by least one described light-sensitive element in the touch location detection module, touch signal is produced, and will touch
Touch signal and pass to the microprocessor system；The microprocessor system be considered as the luminous point be located at receive the light
In optical signal receiving area where the light-sensitive element of signal corresponding to the light inlet of the light-filtering channels, and optical signal is received
Region is associated with the touch pad.
3. optical touch screen according to claim 2, it is characterised in that：The light-sensitive element uses infrared receiving terminal.
4. optical touch screen according to claim 2, it is characterised in that：The microprocessor system connects a wireless local
Network Communication module, is wirelessly connected with the extraneous equipment progress signal for needing touch operation, realizes touch operation work(
Energy.
5. optical touch screen according to claim 3, it is characterised in that：The microprocessor system connects an infrared communication
Module, is connected with the extraneous infrared equipment progress signal for needing touch operation by way of Infrared Transmission, realizes touch operation
Function.
6. the optical touch screen according to claim 2,3,4 or 5, it is characterised in that：Width inside the light-filtering channels is：
The light inlet width at one end be more than the width of light-sensitive element institute at one end, and width is from light inlet place
One end is gradually reduced at one end to the light-sensitive element.
7. optical touch screen according to claim 6, it is characterised in that：Light-filtering channels are arranged in order described at least four, row
Row mode is adjacent at one end for light-sensitive element institute, and the light inlet institute is adjacent at one end；The light-filtering channels are flat
Sector, the sector is parallel with plane where the touch pad；Light-filtering channels described at least four be sequentially arranged in it is described
In the parallel plane of plane where touch pad, shape is in a row；The light inlet of the light-filtering channels is corresponding towards the touch pad
Optical signal receiving area correspondence on the touch pad.
8. optical touch screen according to claim 6, it is characterised in that：When there is odd number institute in the light-filtering channels of same row
When stating light-sensitive element and receiving the light reflected at the luminous point, it is considered as the optical signal that luminous point is located at where middle light-sensitive element
Region, the signal processing module produces touch signal, and touch signal is passed into the microprocessor system, described micro-
Type processor system will be associated with the touch pad positioned at the optical signal region where middle light-sensitive element.
9. optical touch screen according to claim 6, it is characterised in that：Head is received including optical signal described at least two, extremely
The optical signal region that few two optical signals are received corresponding to head, which exists, to intersect；The signal processing module handles an optical signal
Header is received, luminous point is obtained positioned at an optical signal region；The signal processing module handles another optical signal and receives header,
Luminous point is obtained positioned at another optical signal region, the signal processing module produces touch signal, and touch signal is passed into institute
Microprocessor system is stated, the microprocessor system will be located at an optical signal region and another optical signal region crossover location
Optical signal region be associated with the touch pad, and then determine luminous point position on a touchpad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710191452.6A CN107145264B (en) | 2011-06-07 | 2011-06-07 | Optical signal receiving head and application thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710191452.6A CN107145264B (en) | 2011-06-07 | 2011-06-07 | Optical signal receiving head and application thereof |
| CN201110150374.8A CN102819356B (en) | 2011-06-07 | 2011-06-07 | Optical touch screen system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110150374.8A Division CN102819356B (en) | 2011-06-07 | 2011-06-07 | Optical touch screen system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107145264A true CN107145264A (en) | 2017-09-08 |
| CN107145264B CN107145264B (en) | 2020-05-15 |
Family
ID=47303492
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610598910.3A Active CN106249967B (en) | 2011-06-07 | 2011-06-07 | Wireless touch system |
| CN201110150374.8A Active CN102819356B (en) | 2011-06-07 | 2011-06-07 | Optical touch screen system |
| CN201710191452.6A Active CN107145264B (en) | 2011-06-07 | 2011-06-07 | Optical signal receiving head and application thereof |
| CN201610598941.9A Active CN106227391B (en) | 2011-06-07 | 2011-06-07 | Touch screen control system |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610598910.3A Active CN106249967B (en) | 2011-06-07 | 2011-06-07 | Wireless touch system |
| CN201110150374.8A Active CN102819356B (en) | 2011-06-07 | 2011-06-07 | Optical touch screen system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610598941.9A Active CN106227391B (en) | 2011-06-07 | 2011-06-07 | Touch screen control system |
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| CN (4) | CN106249967B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9367177B2 (en) * | 2013-06-27 | 2016-06-14 | Hong Kong Applied Science and Technology Research Institute Company Limited | Method and system for determining true touch points on input touch panel using sensing modules |
| CN105514766A (en) * | 2016-02-29 | 2016-04-20 | 北京仁光科技有限公司 | Large-angle uniform line laser sector modulation device |
| CN107283442B (en) * | 2017-08-07 | 2023-08-15 | 深圳欧沃机器人有限公司 | Control device and robot system |
| CN113075138A (en) * | 2020-01-03 | 2021-07-06 | 北京小米移动软件有限公司 | State identification method and device of target characteristics and electronic equipment |
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| US20060232830A1 (en) * | 2005-04-15 | 2006-10-19 | Canon Kabushiki Kaisha | Coordinate input apparatus, control method therefore, and program |
| CN101344827A (en) * | 2008-08-22 | 2009-01-14 | 李兴文 | Optical touch screen and touch pen |
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| JP5060622B2 (en) * | 2007-12-05 | 2012-10-31 | アルメーファ・アクチエンゲゼルシャフト | Interaction device for interaction between the screen and the indicator |
| CN201465072U (en) * | 2009-04-04 | 2010-05-12 | 李兴文 | Virtual touch screen |
| CN101872271B (en) * | 2009-04-27 | 2013-04-24 | 鸿富锦精密工业（深圳）有限公司 | Touch control system |
| CN102043575B (en) * | 2009-10-23 | 2012-12-19 | 鸿富锦精密工业（深圳）有限公司 | Touch electronic device with optimization configuration function and optimization configuration method of touch electronic device |
| CN102004586B (en) * | 2010-11-23 | 2013-01-09 | 广东威创视讯科技股份有限公司 | Touch point positioning device and method |
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- 2011-06-07 CN CN201610598910.3A patent/CN106249967B/en active Active
- 2011-06-07 CN CN201110150374.8A patent/CN102819356B/en active Active
- 2011-06-07 CN CN201710191452.6A patent/CN107145264B/en active Active
- 2011-06-07 CN CN201610598941.9A patent/CN106227391B/en active Active
Patent Citations (4)
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| US20060232830A1 (en) * | 2005-04-15 | 2006-10-19 | Canon Kabushiki Kaisha | Coordinate input apparatus, control method therefore, and program |
| CN101344827A (en) * | 2008-08-22 | 2009-01-14 | 李兴文 | Optical touch screen and touch pen |
| CN101630213A (en) * | 2008-08-22 | 2010-01-20 | 李兴文 | Optical touch screen, optical touch screen light source and touch pen |
| CN101661352A (en) * | 2008-08-22 | 2010-03-03 | 李兴文 | Optical touch screen, touch pen and desk provided with optical touch screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106249967B (en) | 2019-04-30 |
| CN106249967A (en) | 2016-12-21 |
| CN106227391B (en) | 2019-09-17 |
| CN102819356B (en) | 2017-05-10 |
| CN107145264B (en) | 2020-05-15 |
| CN106227391A (en) | 2016-12-14 |
| CN102819356A (en) | 2012-12-12 |
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