CN107239179A - A kind of touch recognition device and the man-machine interactive system comprising the device - Google Patents
A kind of touch recognition device and the man-machine interactive system comprising the device Download PDFInfo
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- CN107239179A CN107239179A CN201710657082.0A CN201710657082A CN107239179A CN 107239179 A CN107239179 A CN 107239179A CN 201710657082 A CN201710657082 A CN 201710657082A CN 107239179 A CN107239179 A CN 107239179A
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- light source
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- recognition device
- lettering pen
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- 238000012545 processing Methods 0.000 claims abstract description 26
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- 230000005855 radiation Effects 0.000 claims description 3
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- 230000000694 effects Effects 0.000 description 4
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- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 239000004408 titanium dioxide Substances 0.000 description 2
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- 239000004416 thermosoftening plastic Substances 0.000 description 1
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Classifications
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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
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
-
- 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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a kind of touch recognition device, including at least two image acquisition and processing units, touch panel, controllable light source and controller, described image acquisition process unit is located at the edge of the touch panel, and the light source is used to launch light from the edge relative with described image acquisition process unit of the touch panel to described image acquisition process unit；The light source is periodically opened and closed, synchronously the opening of the light source and closed mode gather image to described image collecting unit, the controller is sent to after the image of collection is directly transmitted or handled, the controller recognizes the position of the touch objects in image according to the image information of reception and is sent to main frame.The touch recognition device of the present invention can recognize active lettering pen, can also recognize passive touch objects, can be identified and distinguished among when existing concurrently with active lettering pen and passive touch objects, and provide emulation writing for active lettering pen, enhance Consumer's Experience.
Description
Technical field
The present invention relates to field of human-computer interaction, more particularly to a kind of optical image formula touch recognition device and include the touch
The man-machine interactive system of identifying device.
Background technology
Optical image formula electronic whiteboard is mainly used in education and handled official business, and because its is interactive very good, therefore benefits from very much
Family is favored, and existing optical image formula touch-screen (hereinafter referred to as optical panel) one of which technology generally includes camera module, light
Source and retroreflecting bar, the monochrome information that camera collection is photographed, are analyzed, because lighttight medium blocks light path, because
This can recognize the angle direction where shelter, and position identification is carried out to touch objects.The shortcoming of this optical panel is to support to touch
Touch sensing, but cannot distinguish between for each identification thing (including touch objects (finger) and lettering pen), even if therefore being integrated with nib
Pressure sensitive to transmit pressure, still can not coordinate that correctly match cognization is arrived and pressure data matching relationship, it is impossible to realize and touch
Thing (finger) is touched with pen while using, it is impossible to effectively distinguish and touch and lettering pen, therefore the book of the lettering pen with pressure sensitive
Effect is write to be unable to reach most preferably.In addition, capacitance plate of the prior art, touch screens, infrared screen, electromagnetic screen and laser-projection-type
Writing screen etc. is effectively distinguished in the case of can not using lettering pen and finger touch objects at the same time, and electromagnetic screen is only supported specially
Lettering pen, does not support to touch, can not more support to touch with lettering pen while using, laser-projection-type writing screen is only supported
Special lettering pen, does not support to touch, can not more support to touch with lettering pen while using and distinguishing.
The content of the invention
The technical problems to be solved by the invention are to provide one kind and use active lettering pen and finger or other nothings at the same time
In the case of the touch objects of source, it can accurately identify and distinguish active lettering pen and the touch recognition device of passive touch objects and man-machine
Interactive system.
In order to solve the above technical problems, the present invention provides a kind of touch recognition device, including at least two IMAQs
Unit, touch panel, controllable light source and controller are managed, described image acquisition process unit is located at the edge of the touch panel,
The light source is used at from the edge relative with described image acquisition process unit of the touch panel to described image collection
Manage unit transmitting light；The light source is periodically opened and closed, the unlatching of the synchronous light source of described image collecting unit
State and closed mode collection image, are sent to the controller, the control after the image of collection is directly transmitted or handled
Device recognizes the position of the touch objects in image according to the image information of reception and is sent to main frame.
Preferably, the light source includes retroreflecting bar and infrared light supply, and the retroreflecting bar is arranged at the touch
The edge of panel, the light for the infrared light supply to be sent is reflected back, and the infrared light supply is located at described image collection
Manage on unit.
Preferably, when the light source is opened, the image of described image collecting unit collection is used to recognize passive touch objects, institute
When stating light source closing, the image of described image collecting unit collection is used to recognize active touch objects.
Preferably, in addition to the controller lettering pen communication unit being connected, sends for receiving active touch objects
Information, the information of reception is sent to the controller, the controller by the information received from active touch objects with it is active
The positional information combination of touch objects is latter and is sent to main frame.
Preferably, the light source and described image acquisition process unit are uniformly controlled by the controller.
Preferably, described image acquisition process unit controls the opening and closing of the light source.
Preferably, the light source is strip infrared light supply, is arranged on the edge of the touch panel.
Preferably, described information includes pressure sensitive data and/or a color parameter.
Preferably, described information includes lantern slide broadcasting control signal.
Preferably, described information includes operating system hot button command information.
The present invention also provides a kind of interactive system, including above-mentioned touch recognition device, in addition to a kind of active lettering pen, institute
Stating active lettering pen includes processor and a light source, and the processor is connected with described light source, and the processor is touched with described
Wireless connection can be set up by touching identifying device, and the processor controls the infrared emission during the active lettering pen use
Guan Changliang, infrared light passes through the written to touch recognition device fringe radiation of active pen.
Preferably, the active lettering pen also includes a light source key switch, and the key switch is connected with processor, institute
State controller and control a light source by the key switch data of collection, while corresponding color parameter is sent into the touch
Identifying device, described light source includes infrared transmitting tube and three-color LED pipe.
Preferably, the active lettering pen also includes lantern slide control button switch and hot key key switch, the control
Device sends lantern slide by the lantern slide key switch data and hot key key switch data of collection to the touch recognition device
Control information and hot key information.
Preferably, the processor is set up after wireless connection with the touch recognition device, just controls the infrared emission
Guan Changliang.
Preferably, the active lettering pen also includes the pressure sensitive device being connected with the processor, the processor
Receive pressure sensitive data and send it to the touch recognition device.
The touch recognition device of the present invention can recognize active lettering pen, can also recognize passive touch objects, exist concurrently with
It can be identified and distinguished among when active lettering pen and passive touch objects, and emulation writing is provided for active lettering pen, enhance use
Experience at family.
Brief description of the drawings
Fig. 1 inventive touch identifying device structural representations；
Light path schematic diagrams of the Fig. 2 for the present invention in the case of light source is opened；
Light path schematic diagrams of the Fig. 3 for the present invention in the case of light source is closed；
Fig. 4 is that touch recognition device constitutes structural representation；
Fig. 5 is that active lettering pen constitutes structural representation；
Fig. 6 is active lettering pen outside drawing；
Fig. 7 is active lettering pen circuit block diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing, technical scheme is clearly and completely described.
The touch recognition device of the present invention is as shown in figure 1, including 4 image acquisition and processing units 1, touch panel 2, return
Reflection bar 3, controller 4 and the controllable infrared light supply (infrared LED, figure not shown in) on image acquisition and processing unit, this
Four angles of touch panel 2 respectively set an image acquisition and processing unit (in practical application, to there is two or more image in embodiment
Acquisition process unit just can be with), retroreflecting bar and infrared light supply provide from the touch panel with described image collection
The effect that infrared light is launched at the relative edge of unit to described image acquisition process unit is managed, if on the side of touch panel 2
Edge sets the light source of wire, can substitute above-mentioned retroreflecting bar and infrared light supply.The controller 4 controls the infrared light supply
Periodically periodically open and close, while controlling described image collecting unit, synchronously the light source periodically collection light source exists
The image of opening and closed mode, described image collecting unit will be sent to the controller after the image procossing of collection,
The controller 4 is sent to main frame after handling.
Illustrate that light source rises in the image that opening and closing state hypograph acquisition process unit is gathered respectively separately below
Effect：
Light source, for recognizing passive touch objects (such as finger), is opened when opening and obtains image under itself light source state,
If in the absence of passive touch objects, optical routing infrared light supply is sent, after being reflected at light echo reflection bar, directive infrared light supply, also
It is that (the impossible complete regression reflection of light, can have certain angle difference, some light warp to directive image acquisition and processing unit
Cross and be reflected into image acquisition and processing unit and be received), the image appearance of collection is reflecting strips all light, if there is passive touch
Thing, then passive touch objects can block the shadow that passive touch objects 5 are shown in light path (as shown in Figure 2), figure to upper left corner camera
Ring, wherein thick black solid line is the light that infrared light supply is launched, thin white solid line is the light by the reflection of retroreflecting bar, it can be seen that with
The light directive reflected on retroreflecting bar on the relative edge of image acquisition and processing unit the image acquisition and processing unit, stain
For passive touch objects 5, thick black dotted line is the transmitting light blocked by passive touch objects, and passive touch objects 5 are due to having blocked infrared light
The light of source transmitting, therefore no light reflects back from retroreflecting bar, the image appearance of collection is position residing for passive touch objects
The brightness put is dark in other regions without passive touch objects.Now active lettering pen is due to automatic light source, therefore IMAQ
Processing unit can receive the light that the light source of active lettering pen is sent, therefore the image gathered in image acquisition and processing unit
In, the bright brightness in passive touch objects present position of its brightness of the location of active lettering pen, it can be seen that, active lettering pen
Had not significant impact with the presence or absence of to image, do not influence to recognize the position of passive touch objects.Image acquisition and processing unit is by part
Image (linear image for including the passive dark line of touch objects of correspondence) is sent to the controller 4 or sends out entire image
Be sent to controller 4, the controller according to algorithm calculate passive touch objects relative to the image acquisition and processing unit residing for
Angle, the angular relationship calculated using at least two image acquisition and processing units, passive touch is calculated using trigonometric function
The parameters such as the position of thing, including touch point quantity, the coordinate each put, size, touch condition etc., pass through in touch data form
USB interface is sent to main frame.
Light source when closed, for recognizing active touch objects (such as active lettering pen), recognizes the active writing with light source
Pen, if without active lettering pen, the image appearance of image acquisition and processing unit collection is complete dark, if there is active lettering pen, such as Fig. 3
Shown, the active nib of lettering pen 6 lights, and the image appearance of image acquisition and processing unit collection is active tip of stylus present position
Brightness is bright in the brightness in the absence of active lettering pen present position, now if there is passive touch objects, due to passive touch objects
In the case of no light source, the influence in brightness is not had to the image that image acquisition and processing unit is gathered, therefore, image is adopted
The image of collection processing unit collection is not used to recognize passive touch objects, it can be seen that, passive touch objects whether there is to image
Have not significant impact, do not influence to recognize the position of active lettering pen.Image acquisition and processing unit (includes parts of images to that should have
The linear image of source lettering pen bright rays) controller 4 is sent to, the controller calculates active lettering pen phase according to algorithm
For the angle residing for the image acquisition and processing unit, the angle calculated using at least two image acquisition and processing units is closed
System, the position of active lettering pen is calculated using trigonometric function.Above-mentioned position, which is calculated, belongs to existing optical image formula touch-screen original
Reason, is just repeated no more herein.
In above-described embodiment, the controller 4 controls the infrared light supply periodically to open and close, while controlling institute
Stating image acquisition units, synchronously the light source periodically gathers image of the light source in opening and closed mode, and described image is adopted
Collection unit will be sent to the controller 4 and processing be identified after the image procossing of collection, the controller 4 will be obtained after handling
Information (such as positional information) be sent to main frame.In specific implementation, a kind of preferred alternate embodiments, the infrared light are used as
Source and described image acquisition process unit are integrated, and unlatching and the pass of the infrared light supply are controlled by image acquisition and processing unit
Close, and synchronous acquisition image, processing is identified in the controller 4 that is partly or entirely sent to of the image of collection.
As another preferred embodiment, lead to as shown in figure 4, inventive touch identifying device also includes a lettering pen
Unit 7 is believed, lettering pen communication unit is connected with the controller 4, for by from the lettering pen receive information with communication module
And be sent to light source in the controller 4, Fig. 4 and be integrated in image acquisition and processing unit 1, so light source not shown in figure.
The lettering pen communication unit 7 can receive pen point pressure data, lettering pen button data from lettering pen, by bond number
Control life is played according to such as erasing switch data (erase status/writing state), written handwriting color data, hot key data, PPT
Make data etc..The lettering pen location parameter of identification and the pressure data received are combined as pen data and are sent to master by controller 4
Machine.Lettering pen with communication module can then have if active lettering pen with passive touch objects simultaneously using being independent of each other
Source lettering pen can realize emulation person's handwriting using pressure data, and passive touch objects can also be interacted with main frame.Lettering pen communicates
Unit 7 can be communicated using communication protocols such as wired connection, bluetooth, zigbee with the communication module in lettering pen.
In order to allow those skilled in the art present invention easier to understand, provide active lettering pen to the present invention below and do in detail
Thin explanation, as shown in figure 5, active lettering pen includes nib, the written written fixing device 58, a light source is fixedly mounted
54 and a body, there is holder 59 in the written fixing device 58, be convenient for changing nib and do not allow nib to come off.Lettering pen is also wrapped
Pressure sensitive device 512 and connected processor 510 are included, pressure sensitive device 512 is located at the rear end of nib, and nib is in book
When writing, pressure can be transmitted to the pressure sensitive device 512, pressure sensitive value is sent to processor by pressure sensitive device 512
510, parameter is sent to touch recognition device (electronic whiteboard) by processor 510 by communication module, and the processor 510 is included
It is used for the communication module communicated with touch recognition device, such as bluetooth module.Processor 510 is also associated with multiple key switches
511, the transmitting of a light source 54 is controlled by gathering key switch signal, a light source 54 includes infrared transmitting tube and three-color LED
Pipe, is driven by processor.Processor 510 can use the SAMB11 chips of Microchip companies, contain low-power consumption
Bluetooth module, switch 11 generally selects key switch, the surface of electronic writing pen is distributed in pictorial diagram, as shown in Figure 6.Place
The nRF52832 chips of Nordic companies can also be used by managing device 510, and communication is also to have used bluetooth low enegry, letter
Claim bluetooth le or ble (), Chinese name low-power consumption bluetooth in the category unambiguously.
The light that either infrared transmitting tube or three-color LED pipe are launched passes through written outwards transmitting, infrared transmitting tube
It can always light so that lettering pen turns into active lettering pen, be easy to touch recognition device to recognize, three-color LED can be shown not
Same color, is recognized for user's naked eyes, and by the color state of three-color LED pipe, (color parameter is pen when writing to simultaneous processor
Color) be sent to the identification of touch recognition device, the identification of touch recognition device is according to the color state of three-color LED pipe using corresponding
Color pencil.Allow user to have more easily to experience, in writing, the step of dispensing selection color pencil.
The structure and principle of nib is described below, nib includes light guide 51 and contacted with the writing that its one end is fixedly connected
Part 52, one end that the writing contact 52 is connected with light guide 51 is tapered portion 53, and one end of the light guide 51 is used for will
Contact 52 is write described in the light directing that a light source 54 is sent in lettering pen, a portion light 55 passes through the writing contact
Conical section reflected, reference 56 represent reflection light, if penholder is perpendicular to touch recognition device, (electronics is white
Plate) to write, then the light reflected is mapped to the image acquisition and processing unit 1 at electronic whiteboard edge in the way of parallel to electronic whiteboard.
Due to the reflection of tapered portion 53, the wide part that a light source 54 is sent can be used effectively, because light source major part light position
It is direct to electronic whiteboard from light source if light source is arranged at nib in the optical axis and nearby of light source (be usually LED/light source)
The light intensity of fringe radiation can be very faint.The other end relative with tapered portion 53 for writing contact 52 is nib, for directly connecing
Electronic whiteboard plane is touched, usually spheric, preferred scheme can select POM (polyformaldehyde:Polyformaldehyde) thermoplastic
Property crystalline polymer.It is described as " supersteel " or " match steel ", also known as polyoxymethylene.English abbreviation is POM) plus titanium dioxide, lean on
The self-lubricitys of POM in itself reduce the frictional resistance in writing, and it is to strengthen the reflection of light, reduce the damage of light to add titanium dioxide
Consumption.
Light guide 51 and writing contact 52 can pass through UV glue stickings；The light guide 51 can be hollow cylinder, light
The light of source transmitting, which is transmitted directly in the tapered portion, to be reflected, and tapered portion can be made up of infrared light reflection material,
One layer of reflecting material can be formed on taper surface by handling the taper surface of tapered portion.The light guide 51 can also be
Bright solid cylinder, one end that the light guide is fixedly connected with the writing contact is recessed taper surface, the recessed taper surface
It is engaged, is adhered the two together with UV glue with the tapered portion of the writing contact 52.
The angle of inclination of the recessed taper surface of the light guide and the tapered portion of the writing contact are appropriately arranged with, concave cone is allowed
Space, the portion that the recessed taper surface can be sent to a light source 54 are formed between the tapered portion of shape face and the writing contact
Light splitting forms total internal reflection, and effect is more.Described light guide 51 is preferably acrylic material, can also be transparent plastic etc..
Electronic whiteboard, which is received, can adjust the thickness of stroke after pressure sensitive value, make the writing of writing out more vigorous and forceful, more
Added with artistic feeling.
Fig. 7 is the circuit block diagram of active lettering pen, and active lettering pen includes processor, pressure sensitive device, key switch
With a light source, wherein pressure sensitive device gathers pen point pressure data transfer to processor；Processor gathers key switch data,
A light source is controlled according to key switch data, a light source for different colours shows different colors；Meanwhile, processor will correspondence face
The parameter that form and aspect are closed is sent to electronic whiteboard by bluetooth communication, and processor is completed in initialization and in the book of electronic whiteboard
Write a communication unit 7 to set up after connection, control infrared transmitting tube Chang Liang (when disconnecting, controls all light sources often to go out, reduction consumption
Electrical power).Also include PPT broadcasting buttons to switch, processor will control PPT to play according to PPT (lantern slide) key switches data
Command information lettering pen communication unit 7 is sent to by bluetooth module；Key switch also includes hot key and switched, control main frame
Hot key, processor sends hot button command, active lettering pen electricity by bluetooth module according to hot key data to lettering pen communication unit 7
Road can also include an accelerometer (shown in dotted line frame), and processor is transferred to for gathering vibration information；Processor is same
Electronic whiteboard is sent to by bluetooth module.
The above-mentioned touch recognition device of the present invention constitutes a kind of man-machine interactive system with active lettering pen.It can recognize active
Lettering pen, can also recognize passive touch objects, can be identified and distinguished among when existing concurrently with active lettering pen and passive touch objects.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technology
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (15)
1. a kind of touch recognition device, including at least two image acquisition and processing units, touch panel, controllable light source and control
Device, described image acquisition process unit be located at the touch panel edge, the light source be used for from the touch panel with
Launch light to described image acquisition process unit in the relative edge of described image acquisition process unit；Characterized in that, described
Light source is periodically opened and closed, and described image collecting unit synchronously scheme by the opening of the light source and closed mode collection
Picture, is sent to the controller after the image of collection is directly transmitted or handled, the controller is according to the image information of reception
The position of touch objects in identification image is simultaneously sent to main frame.
2. a kind of touch recognition device according to claim 1, it is characterised in that the light source include retroreflecting bar and
Infrared light supply, the retroreflecting bar is arranged at the edge of the touch panel, and the light for the infrared light supply to be sent is anti-
It is emitted back towards, the infrared light supply is located on described image acquisition process unit.
3. a kind of touch recognition device according to claim 1, it is characterised in that when the light source is opened, described image
The image of collecting unit collection is used to recognize passive touch objects, when the light source is closed, the figure of described image collecting unit collection
As being used for recognizing active touch objects.
4. a kind of touch recognition device according to claim 1, it is characterised in that also including being connected with the controller
Lettering pen communication unit, for receiving the information that active touch objects are sent, the controller is sent to by the information of reception, described
The information received from active touch objects is combined latter and is sent to main frame by controller with the positional information of active touch objects.
5. a kind of touch recognition device according to claim 1, it is characterised in that at the light source and described image collection
Reason unit is uniformly controlled by the controller.
6. a kind of touch recognition device according to claim 1, it is characterised in that described image acquisition process unit is controlled
The opening and closing of the light source.
7. a kind of touch recognition device according to claim 1, it is characterised in that the light source is strip infrared light supply,
It is arranged on the edge of the touch panel.
8. a kind of touch recognition device according to claim 4, it is characterised in that described information includes pressure sensitive data
And/or a color parameter.
9. a kind of touch recognition device according to claim 4, it is characterised in that described information includes lantern slide and plays control
Signal processed.
10. a kind of touch recognition device according to claim 4, it is characterised in that described information includes operating system heat
Key command information.
11. a kind of man-machine interactive system, it is characterised in that including the touch recognition device as described in claim any one of 1-10,
Also include a kind of active lettering pen, the active lettering pen includes processor and a light source, the processor and described light source
Connection, the processor can set up wireless connection with the touch recognition device, the institute during the active lettering pen use
State processor and control the infrared transmitting tube Chang Liang, infrared light passes through the written to touch recognition device fringe radiation of active pen.
12. a kind of man-machine interactive system according to claim 11, it is characterised in that the active lettering pen also includes pen
Light source key switch, the key switch is connected with processor, and the processor controls pen by the key switch data of collection
Light source, while corresponding color parameter be sent into the touch recognition device, described light source include infrared transmitting tube and
Three-color LED pipe.
13. a kind of man-machine interactive system according to claim 11, it is characterised in that the active lettering pen also includes unreal
Lamp piece control button is switched and hot key key switch, and the processor is pressed by the lantern slide key switch data and hot key of collection
Key switch data send lantern slide control information and hot key information to the touch recognition device.
14. a kind of man-machine interactive system according to claim 11, it is characterised in that the processor is known with described touch
Other device is set up after wireless connection, just controls the infrared transmitting tube Chang Liang.
15. a kind of man-machine interactive system according to claim 11, it is characterised in that the active lettering pen also include with
The pressure sensitive device of the processor connection, the processor receives pressure sensitive data and sends it to the touch knowledge
Other device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710657082.0A CN107239179A (en) | 2017-08-03 | 2017-08-03 | A kind of touch recognition device and the man-machine interactive system comprising the device |
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| CN201710657082.0A CN107239179A (en) | 2017-08-03 | 2017-08-03 | A kind of touch recognition device and the man-machine interactive system comprising the device |
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| CN107239179A true CN107239179A (en) | 2017-10-10 |
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| CN201710657082.0A Pending CN107239179A (en) | 2017-08-03 | 2017-08-03 | A kind of touch recognition device and the man-machine interactive system comprising the device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108920025A (en) * | 2018-09-19 | 2018-11-30 | 信利光电股份有限公司 | A kind of touch input equipment and its electronic equipment of application |
| CN109407886A (en) * | 2018-10-16 | 2019-03-01 | 北京科加触控技术有限公司 | A kind of remote interaction method, apparatus and system |
| CN109753162A (en) * | 2018-12-21 | 2019-05-14 | 北京科加触控技术有限公司 | A kind of Writing method, apparatus and system |
| CN110058723A (en) * | 2019-01-28 | 2019-07-26 | 北京科加触控技术有限公司 | A kind of Writing method, apparatus and system |
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| CN110058723A (en) * | 2019-01-28 | 2019-07-26 | 北京科加触控技术有限公司 | A kind of Writing method, apparatus and system |
| CN110058723B (en) * | 2019-01-28 | 2022-10-28 | 北京科加触控技术有限公司 | Writing method, device and system |
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