CN104834413A - Recognition method for touch points in infrared touch frame and infrared touch recognizer - Google Patents
Recognition method for touch points in infrared touch frame and infrared touch recognizer Download PDFInfo
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Abstract
The embodiment of the invention provides a recognition method for touch points in an infrared touch frame and an infrared touch recognizer. The recognition method and the infrared touch recognizer are used for verifying whether the touch points are correct, output accuracy of the touch points is high, and therefore user experience is promoted. The method includes the step of starting an infrared emission circuit and an infrared receiving circuit to conduct scanning to obtain original signals; the step of processing the original signals to obtain first position information, wherein the first position information comprises position information of at least one touch point; the step of judging whether the first position information is correct; the step of processing the first position information if the first position information is wrong.
Description
Technical field
The present invention relates to field of human-computer interaction, particularly relate to recognition methods and the infrared touch recognizer of touch point in a kind of infrared touch frame.
Background technology
At present, infrared touch frame is widely used in the electronic product with flat-panel screens, as the advertisement machine and subway booking machine etc. of bank.
The principle of work of infrared touch frame is covered with infrared receiving tube and infrared transmitting tube in the surrounding of touch-screen, these infrared tubes in touch frame table face in Rankine-Hugoniot relations one to one, form a light net become by infrared ray cloth, as shown in Figure 1, when there being object 101 and 102 (finger, band gloves or any touching object) enter infrared light net when stopping the infrared ray transmitter and receiver in somewhere, the ultrared power that this receiving tube putting both direction anyhow receives will change, by the change understanding ultrared reception condition, controller just can know that where touches.
In order to ensure that the chip of infrared touch frame has higher operation efficiency, reach in the computing chip of cheapness and have good Consumer's Experience, infrared touch frame utilizes the position, touch point in the recognizer identification infrared touch frame simplified, such as the light of multiple adjacent change is used as a set to calculate, as shown in Figure 2, infrared touch frame leaves 201 and 202 two touch points.
But, along with infrared touch frame requires that the quantity of identification point gets more and more, and the arrangement of fluorescent tube is more and more sparse, infrared touch frame utilizes the recognizer identification simplified to there is the problem shown in Fig. 3, actual touch point is 301 and 302, and the light of multiple adjacent change is used as after a set calculates by recognizer, the position (namely identifying touch point 302) of final output 306, touch point 301 judges into noise spot by accident, the loss of so obvious touch point, can make the operating experience of user be affected.
Summary of the invention
Embodiments provide recognition methods and the infrared touch recognizer of touch point in a kind of infrared touch frame, whether correct for verifying touch point, the accuracy that touch point is exported improves, thus promotes the experience of user.
First aspect present invention provides the recognition methods of touch point in a kind of infrared touch frame, is applied to the infrared touch system comprising infrared touch frame, infrared transmitting circuit and infrared receiving circuit, comprises:
Start described infrared transmitting circuit and described infrared receiving circuit scans, obtain original signal;
Process described original signal, obtain primary importance information, described primary importance information comprises the positional information of at least one touch point;
Judge that whether described primary importance information is correct;
If mistake, then described primary importance information is processed.
In conjunction with first aspect present invention, in first aspect present invention first embodiment, describedly judge whether described primary importance information correctly comprises:
By described infrared transmitting circuit and described infrared receiving circuit, at least one position that described primary importance information corresponds on described infrared touch frame is scanned one by one, obtain at least one sweep signal;
Judge whether the arbitrary sweep signal at least one sweep signal described reaches prerequisite, is if so, then judged to be that described primary importance information is correct; If not, then described primary importance information errors is judged to be.
In conjunction with first aspect present invention, in first aspect present invention second embodiment, describedly judge whether described primary importance information correctly comprises:
When in described primary importance information, the positional information of touch point is two or more, judge whether the distance of the position that described primary importance information corresponds on described infrared touch frame is less than preset bee-line, if be not less than, be then judged to be that described primary importance information is correct; If be less than, be then judged to be described primary importance information errors.
In conjunction with first aspect present invention, first aspect present invention first embodiment or first aspect present invention second embodiment, in first aspect present invention the 3rd embodiment, describedly process carried out to described primary importance information comprise:
From database, extract second place information, described second place information is the last positional information exported;
Described second place information is replaced described primary importance information, and using described second place information as output information.
In conjunction with first aspect present invention, first aspect present invention first embodiment or first aspect present invention second embodiment, in first aspect present invention the 4th embodiment, describedly process carried out to described primary importance information comprise:
The 3rd positional information is extracted, the positional information that described 3rd positional information exports before comprising repeatedly from database;
Calculate described 3rd positional information according to motion forecast method and obtain the 4th positional information, using described 4th positional information as output information.
In conjunction with first aspect present invention, first aspect present invention first embodiment or first aspect present invention second embodiment, in first aspect present invention the 4th embodiment, describedly process carried out to described primary importance information comprise:
By described primary importance information deletion.
Second aspect present invention provides a kind of infrared touch recognizer, is applied to the infrared touch system comprising infrared touch frame, infrared transmitting circuit and infrared receiving circuit, comprises:
Circuit control module, for starting described infrared transmitting circuit and described infrared receiving circuit scans, obtains original signal;
Signal processing module, for processing described original signal, obtain primary importance information, described primary importance information comprises the positional information of at least one touch point;
Checking module, whether correct for judging described primary importance information;
Position information process module, for when described primary importance information errors, processes described primary importance information.
In conjunction with second aspect present invention, in second aspect present invention first embodiment,
Described checking module, specifically for being scanned one by one at least one position that described primary importance information corresponds on described infrared touch frame by described infrared transmitting circuit and described infrared receiving circuit, obtains at least one sweep signal;
Described checking module, specifically for judging whether the arbitrary sweep signal at least one sweep signal described reaches prerequisite, is if so, then judged to be that described primary importance information is correct; If not, then described primary importance information errors is judged to be.
In conjunction with second aspect present invention, in second aspect present invention second embodiment,
Described checking module, specifically for when in described primary importance information, the positional information of touch point is two or more, judge whether the distance of the position that described primary importance information corresponds on described infrared touch frame is less than preset bee-line, if be not less than, be then judged to be that described primary importance information is correct; If be less than, be then judged to be described primary importance information errors.
In conjunction with second aspect present invention, second aspect present invention first embodiment or second aspect present invention second embodiment, in second aspect present invention the 3rd embodiment,
Described position information process module, specifically for extracting second place information from database, described second place information is the last positional information exported;
Described position information process module, specifically for replacing described primary importance information by described second place information, and using described second place information as output information.
In conjunction with second aspect present invention, second aspect present invention first embodiment or second aspect present invention second embodiment, in second aspect present invention the 4th embodiment,
Described position information process module, specifically for extracting the 3rd positional information from database, the positional information that described 3rd positional information exports before comprising repeatedly;
Described position information process module, obtains the 4th positional information, using described 4th positional information as output information specifically for calculating described 3rd positional information according to motion forecast method.
In conjunction with second aspect present invention, second aspect present invention first embodiment or second aspect present invention second embodiment, in second aspect present invention the 4th embodiment,
Described position information process module, specifically for by described primary importance information deletion.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
Infrared touch recognizer starts infrared transmitting circuit and infrared receiving circuit scans, and obtains original signal; Process original signal, obtain primary importance information, primary importance information comprises the positional information of at least one touch point; Judge that whether primary importance information is correct; If mistake, then primary importance information is processed.According to practical experience, when touch point calculates appearance mistake or original signal occurs slight exception, by judging whether primary importance information correctly can detect most mistake, the primary importance information of mistake is processed, prevent the positional information of mistake from exporting, that avoids infrared touch system output touch point and user to expect is inconsistent, thus improves the operating experience of user.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiment of the present invention technical scheme, be briefly described to the accompanying drawing used required in embodiment and description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram that in the embodiment of the present invention, a kind of touch point is detected;
Fig. 2 is the schematic diagram that in the embodiment of the present invention, another kind of touch point is detected;
Fig. 3 is that in the embodiment of the present invention, the schematic diagram occurring mistake is detected in touch point;
Fig. 4 is the schematic diagram of an embodiment of the recognition methods of touch point in infrared touch frame in the embodiment of the present invention;
Fig. 5 a kind ofly in the embodiment of the present invention judges the schematic diagram whether positional information is correct;
Fig. 6 is that in the embodiment of the present invention, another kind judges the schematic diagram whether positional information is correct;
Fig. 7 is the schematic diagram of an embodiment of infrared touch recognizer in the embodiment of the present invention.
Embodiment
Embodiments provide recognition methods and the infrared touch recognizer of touch point in a kind of infrared touch frame, whether correct for verifying touch point, the accuracy that touch point is exported improves, thus promotes the experience of user.
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Below by specific embodiment, be described in detail respectively.
Refer to Fig. 4, the embodiment of the present invention provides the recognition methods of touch point in a kind of infrared touch frame, is applied to the infrared touch system comprising infrared touch frame, infrared transmitting circuit and infrared receiving circuit, comprises:
401, startup infrared transmitting circuit and infrared receiving circuit scan, and obtain original signal;
In the embodiment of the present invention, infrared touch recognizer starts infrared transmitting circuit and infrared receiving circuit, according to the scanning rule preset in the enterprising line scanning of infrared touch frame, obtains original signal;
402, original signal is processed, obtain primary importance information;
In the embodiment of the present invention, process according to the algorithm preset the original signal obtained, calculate primary importance information, primary importance information comprises the positional information of at least one touch point.
403, judge that whether primary importance information is correct, if mistake, then perform step 404;
In the embodiment of the present invention, judge that whether the primary importance information obtained is correct by presetting rule, if mistake, then perform step 404.
404, primary importance information is processed.
In the embodiment of the present invention, when primary importance information is mistake, primary importance information is processed.
In the embodiment of the present invention, infrared touch recognizer starts infrared transmitting circuit and infrared receiving circuit scans, and obtains original signal; Process original signal, obtain primary importance information, primary importance information comprises the positional information of at least one touch point; Judge that whether primary importance information is correct; If mistake, then primary importance information is processed.According to practical experience, when touch point calculates appearance mistake or original signal occurs slight exception, by judging whether primary importance information correctly can detect most mistake, the primary importance information of mistake is processed, prevent the positional information of mistake from exporting, that avoids infrared touch system output touch point and user to expect is inconsistent, thus improves the operating experience of user.
Optionally, in some embodiments of the present invention, judge whether primary importance information correctly comprises:
By infrared transmitting circuit and infrared receiving circuit, at least one position that primary importance information corresponds on infrared touch frame is scanned one by one, obtain at least one sweep signal;
Judge whether the arbitrary sweep signal at least one sweep signal described reaches prerequisite, is if so, then judged to be that described primary importance information is correct; If not, then described primary importance information errors is judged to be;
Or,
When the positional information of touch point is two or more in primary importance information, judge whether the distance of the position that primary importance information corresponds on infrared touch frame is less than preset bee-line, if be not less than, is then judged to be that primary importance information is correct; If be less than, be then judged to be primary importance information errors.
In the embodiment of the present invention, judge that the method whether primary importance information is correct has two kinds, make scheme more diversified.
It should be noted that, judge whether primary importance information correctly includes but are not limited to two kinds in above-described embodiment.
Optionally, in some embodiments of the present invention, process is carried out to primary importance information and comprises:
From database, extract second place information, second place information is the last positional information exported;
Second place information is replaced primary importance information, and using second place information as output information;
Or,
The 3rd positional information is extracted, the positional information that the 3rd positional information exports before comprising repeatedly from database;
Calculate the 3rd positional information according to motion forecast method and obtain the 4th positional information, using the 4th positional information as output information;
Or,
By described primary importance information deletion.
In the embodiment of the present invention, when primary importance information errors, there are three kinds to the method that primary importance information processes, make scheme more flexible.
It should be noted that, when primary importance information errors, the method processed primary importance information includes but are not limited to three kinds of methods in above-described embodiment.
For ease of illustrating, with a practical application scene, the recognition methods of touch point in infrared touch frame in the embodiment of the present invention is described in detail below:
The method is applied to infrared touch system, infrared touch system comprises infrared touch frame, infrared transmitting circuit and infrared receiving circuit etc., infrared touch frame both sides are provided with multiple infrared transmitting tube and multiple infrared receiving tube, multiple infrared transmitting tube and multiple infrared receiving tube are all equidistantly arranged, corresponding three infrared receiving tubes of each infrared transmitting tube, corresponding three infrared transmitting tubes of each infrared receiving tube, are formed with three infrared rays between the infrared receiving tube that namely infrared transmitting tube is corresponding with 3.Utilize the position, touch point in the recognizer identification infrared touch frame of simplification in the embodiment of the present invention, as shown in Figure 2, the Infrared of multiple adjacent change is used as a set and calculates.
Infrared touch recognizer starts infrared transmitting circuit and infrared receiving circuit, according to the rule of above-mentioned infrared transmitter and infrared remote receiver in the enterprising line scanning of infrared touch frame, radiating circuit and receiving circuit carry out ultrared transmitting and receiving according to the frequency pre-set, infrared receiving circuit receives original signal, the recognizer of above-mentioned simplification is utilized to carry out computing to original signal, according to existing rule, when calculating does not obtain positional information, prepare to receive next signal, when calculating primary importance information, then primary importance information is carried out to the judgement of correctness.
Judge the method one whether primary importance information is correct: as shown in Figure 5, suppose the positional information comprising a touch point in primary importance information, obtain in the position of infrared touch frame being broken circle T2 according to primary importance information, the Infrared that T2 place passes through is X1 and Y3, detect the sweep signal of infrared remote receiver in X1 and Y3 Infrared, there is a prerequisite in sweep signal, namely when change outside sweep signal generation prerequisite, representative is in all regions that this light passes, there is touch point, and the sweep signal of infrared remote receiver is normal in X1 and Y3 Infrared, therefore not touch point, primary importance information errors.If primary importance information obtains in the position of infrared touch frame as realizing circle T1, the Infrared that T1 place passes through is X2, X3, Y1 and Y2, detect the sweep signal of infrared remote receiver in X2, X3, Y1 and Y2 Infrared, when in X2, X3, Y1 and Y2 Infrared, the sweep signal of infrared remote receiver reaches prerequisite, represent that T1 place is touch point, therefore, primary importance information is correct.
Judge the method two whether primary importance information is correct: as shown in Figure 6, when in primary importance information, the positional information of touch point is two, two positions of positional information on infrared touch frame in primary importance information are respectively 61 and 62, distance X between touch point 61 and touch point 62 is 3 millimeters, if the preset bee-line of design standards is 5 millimeters, then touch point 61 and touch point 62 must have one or two to be all wrong, then primary importance information errors, if the distance X between touch point 61 and touch point 62 is 6 millimeters, then judge that primary importance information is correct.
After judging that primary importance information is correct, according to normal flow process, primary importance information transmission can be exported to infrared touch system, when judging primary importance information errors, one, current primary importance information is deleted, do not transmit it to system, then original signal is next time processed; Two, from the database storing output position information, extract second place information (i.e. the last positional information exported), delete primary importance information, using the output information of second place information as infrared touch system; Three, from the database storing output position information, extract the 3rd positional information, the positional information that 3rd positional information exports before comprising repeatedly, after multiple positional information being sorted by tandem, obtain multiple touch points that the 3rd positional information is corresponding, according to the position of motion forecast method prediction current touch point, and obtain the 4th positional information (i.e. the positional information of current touch point) according to the position of current touch point, using the output information of the 4th positional information as infrared touch system.
Judging that method that whether primary importance information is correct is not limited to the above-mentioned method one mentioned and method two, can also be other method.
Disposal route when judging primary importance information errors is not limited to the above-mentioned three kinds of modes mentioned.
Refer to Fig. 7, the embodiment of the present invention provides a kind of infrared touch recognizer, is applied in the infrared touch system comprising infrared touch frame, infrared transmitting circuit and infrared receiving circuit, comprises:
Circuit control module 701, for starting infrared transmitting circuit and infrared receiving circuit scans, obtains original signal;
Signal processing module 702, for processing original signal, obtain primary importance information, primary importance information comprises the positional information of at least one touch point;
Checking module 703, for judging that whether primary importance information is correct;
Position information process module 704, for when primary importance information errors, processes primary importance information.
In the embodiment of the present invention, circuit control module 701 starts infrared transmitting circuit and infrared receiving circuit scans, and obtains original signal; Signal processing module 702 pairs of original signals process, and obtain primary importance information, primary importance information comprises the positional information of at least one touch point; Signal processing module 702 judges that whether primary importance information is correct; When primary importance information errors, position information process module 704 pairs of primary importance information process.According to practical experience, when touch point calculates appearance mistake or original signal occurs slight exception, judge whether primary importance information correctly can detect most mistake by checking module 703, the primary importance information of position information process module 704 to mistake processes, prevent the positional information of mistake from exporting, that avoids infrared touch system output touch point and user to expect is inconsistent, thus improves the operating experience of user.
Optionally, in some embodiments of the present invention,
Checking module 703, specifically for being scanned one by one at least one position that described primary importance information corresponds on infrared touch frame by infrared transmitting circuit and infrared receiving circuit, obtains at least one sweep signal;
Checking module 703, specifically for judging whether the arbitrary sweep signal at least one sweep signal reaches prerequisite, is if so, then judged to be that described primary importance information is correct; If not, then described primary importance information errors is judged to be;
Or,
Checking module 703, specifically for when in primary importance information, the positional information of touch point is two or more, judge whether the distance of the position that primary importance information corresponds on infrared touch frame is less than preset bee-line, if be not less than, is then judged to be that primary importance information is correct; If be less than, be then judged to be primary importance information errors.
In the embodiment of the present invention, checking module 703 judges that the method whether primary importance information is correct has two kinds, makes scheme more diversified.
Optionally, in some embodiments of the present invention,
Position information process module 704, specifically for extracting second place information from database, second place information is the last positional information exported;
Position information process module 704, specifically for replacing primary importance information by second place information, and using second place information as output information;
Or,
Position information process module 704, specifically for extracting the 3rd positional information from database, the positional information that the 3rd positional information exports before comprising repeatedly;
Position information process module 704, obtains the 4th positional information, using the 4th positional information as output information specifically for calculating the 3rd positional information according to motion forecast method;
Or,
Position information process module 704, specifically for by primary importance information deletion.
In the embodiment of the present invention, when primary importance information errors, the method that position information process module 704 pairs of primary importance information process has three kinds, makes scheme more flexible.
For ease of illustrating, with an embody rule scene, infrared touch recognizer in the embodiment of the present invention is described in detail below:
This infrared touch recognizer is applied to infrared touch system, infrared touch system comprises infrared touch frame, infrared transmitting circuit and infrared receiving circuit etc., infrared touch frame both sides are provided with multiple infrared transmitting tube and multiple infrared receiving tube, multiple infrared transmitting tube and multiple infrared receiving tube are all equidistantly arranged, corresponding three infrared receiving tubes of each infrared transmitting tube, corresponding three infrared transmitting tubes of each infrared receiving tube, are formed with three infrared rays between the infrared receiving tube that namely infrared transmitting tube is corresponding with 3.Utilize the position, touch point in the recognizer identification infrared touch frame of simplification in the embodiment of the present invention, as shown in Figure 2, the Infrared of multiple adjacent change is used as a set and calculates.
Circuit control module 701 starts infrared transmitting circuit and infrared receiving circuit, according to the rule of above-mentioned infrared transmitter and infrared remote receiver in the enterprising line scanning of infrared touch frame, radiating circuit and receiving circuit carry out ultrared transmitting and receiving according to the frequency pre-set, infrared receiving circuit receives original signal, signal processing module 702 utilizes the recognizer of above-mentioned simplification to carry out computing to original signal, according to existing rule, when calculating does not obtain positional information, signal processing module 702 prepares to receive next signal, when calculating primary importance information, then checking module 703 pairs of primary importance information carry out the judgement of correctness.
Checking module 703 judges the method one whether primary importance information is correct: as shown in Figure 5, suppose the positional information comprising a touch point in primary importance information, obtain in the position of infrared touch frame being broken circle T2 according to primary importance information, the Infrared that T2 place passes through is X1 and Y3, the sweep signal of infrared remote receiver in X1 and Y3 Infrared is detected by circuit control module 701 and signal processing module 702, there is a prerequisite in sweep signal, namely when change outside sweep signal generation prerequisite, representative is in all regions that this light passes, there is touch point, and the sweep signal of infrared remote receiver is normal in X1 and Y3 Infrared, therefore not touch point, primary importance information errors.If primary importance information obtains in the position of infrared touch frame as realizing circle T1, the Infrared that T1 place passes through is X2, X3, Y1 and Y2, detect the sweep signal of infrared remote receiver in X2, X3, Y1 and Y2 Infrared, when in X2, X3, Y1 and Y2 Infrared, the sweep signal of infrared remote receiver reaches prerequisite, represent that T1 place is touch point, therefore, primary importance information is correct.
Checking module 703 judges the method two whether primary importance information is correct: as shown in Figure 6, when in primary importance information, the positional information of touch point is two, two positions of positional information on infrared touch frame in primary importance information are respectively 61 and 62, distance X between touch point 61 and touch point 62 is 3 millimeters, if the preset bee-line of design standards is 5 millimeters, then touch point 61 and touch point 62 must have one or two to be all wrong, then checking module 703 judges primary importance information errors, if the distance X between touch point 61 and touch point 62 is 6 millimeters, then checking module 703 judges that primary importance information is correct.
After checking module 703 judges that primary importance information is correct, primary importance information transmission can export to infrared touch system according to normal flow process by position information process module 704, when checking module 703 judges primary importance information errors, one, position information process module 704 deletes current primary importance information, do not transmit it to system, then original signal is next time processed; Two, position information process module 704 extracts second place information (i.e. the last positional information exported) from the database storing output position information, delete primary importance information, using the output information of second place information as infrared touch system; Three, position information process module 704 extracts the 3rd positional information from the database storing output position information, the positional information that 3rd positional information exports before comprising repeatedly, after multiple positional information being sorted by tandem, obtain multiple touch points that the 3rd positional information is corresponding, according to the position of motion forecast method prediction current touch point, and obtain the 4th positional information (i.e. the positional information of current touch point) according to the position of current touch point, using the output information of the 4th positional information as infrared touch system.
Checking module 703 judges that method that whether primary importance information is correct is not limited to the above-mentioned method one mentioned and method two, can also be other method.
When judging primary importance information errors, the disposal route of position information process module 704 is not limited to the above-mentioned three kinds of modes mentioned.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. the recognition methods of touch point in infrared touch frame, is characterized in that, be applied to the infrared touch system comprising infrared touch frame, infrared transmitting circuit and infrared receiving circuit, comprise:
Start described infrared transmitting circuit and described infrared receiving circuit scans, obtain original signal;
Process described original signal, obtain primary importance information, described primary importance information comprises the positional information of at least one touch point;
Judge that whether described primary importance information is correct;
If mistake, then described primary importance information is processed.
2. method according to claim 1, is characterized in that, describedly judges whether described primary importance information correctly comprises:
By described infrared transmitting circuit and described infrared receiving circuit, at least one position that described primary importance information corresponds on described infrared touch frame is scanned one by one, obtain at least one sweep signal;
Judge whether the arbitrary sweep signal at least one sweep signal described reaches prerequisite, is if so, then judged to be that described primary importance information is correct; If not, then described primary importance information errors is judged to be.
3. method according to claim 1, is characterized in that, describedly judges whether described primary importance information correctly comprises:
When in described primary importance information, the positional information of touch point is two or more, judge whether the distance of the position that described primary importance information corresponds on described infrared touch frame is less than preset bee-line, if be not less than, be then judged to be that described primary importance information is correct; If be less than, be then judged to be described primary importance information errors.
4. according to the method in any one of claims 1 to 3, it is characterized in that, describedly process is carried out to described primary importance information comprise:
From database, extract second place information, described second place information is the last positional information exported;
Described second place information is replaced described primary importance information, and using described second place information as output information.
5. according to the method in any one of claims 1 to 3, it is characterized in that, describedly process is carried out to described primary importance information comprise:
The 3rd positional information is extracted, the positional information that described 3rd positional information exports before comprising repeatedly from database;
Calculate described 3rd positional information according to motion forecast method and obtain the 4th positional information, using described 4th positional information as output information.
6. according to the method in any one of claims 1 to 3, it is characterized in that, describedly process is carried out to described primary importance information comprise:
By described primary importance information deletion.
7. an infrared touch recognizer, is characterized in that, is applied in the infrared touch system comprising infrared touch frame, infrared transmitting circuit and infrared receiving circuit, comprises:
Circuit control module, for starting described infrared transmitting circuit and described infrared receiving circuit scans, obtains original signal;
Signal processing module, for processing described original signal, obtain primary importance information, described primary importance information comprises the positional information of at least one touch point;
Checking module, whether correct for judging described primary importance information;
Position information process module, for when described primary importance information errors, processes described primary importance information.
8. infrared touch recognizer according to claim 7, is characterized in that,
Described checking module, specifically for being scanned one by one at least one position that described primary importance information corresponds on described infrared touch frame by described infrared transmitting circuit and described infrared receiving circuit, obtains at least one sweep signal;
Described checking module, specifically for judging whether the arbitrary sweep signal at least one sweep signal described reaches prerequisite, is if so, then judged to be that described primary importance information is correct; If not, then described primary importance information errors is judged to be.
9. infrared touch recognizer according to claim 7, is characterized in that,
Described checking module, specifically for when in described primary importance information, the positional information of touch point is two or more, judge whether the distance of the position that described primary importance information corresponds on described infrared touch frame is less than preset bee-line, if be not less than, be then judged to be that described primary importance information is correct; If be less than, be then judged to be described primary importance information errors.
10. the infrared touch recognizer according to any one of claim 7 to 9, is characterized in that,
Described position information process module, specifically for extracting second place information from database, described second place information is the last positional information exported;
Described position information process module, specifically for replacing described primary importance information by described second place information, and using described second place information as output information.
11. infrared touch recognizers according to any one of claim 7 to 9, is characterized in that,
Described position information process module, specifically for extracting the 3rd positional information from database, the positional information that described 3rd positional information exports before comprising repeatedly;
Described position information process module, obtains the 4th positional information, using described 4th positional information as output information specifically for calculating described 3rd positional information according to motion forecast method.
12. infrared touch recognizers according to any one of claim 7 to 9, is characterized in that,
Described position information process module, specifically for by described primary importance information deletion.
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| CN201510279202.9A CN104834413A (en) | 2015-05-27 | 2015-05-27 | Recognition method for touch points in infrared touch frame and infrared touch recognizer |
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Application publication date: 20150812 |