CN101067775A - Scanning method for trapping and tracking moving target on infrared touch screen - Google Patents
Scanning method for trapping and tracking moving target on infrared touch screen Download PDFInfo
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- CN101067775A CN101067775A CN 200710074940 CN200710074940A CN101067775A CN 101067775 A CN101067775 A CN 101067775A CN 200710074940 CN200710074940 CN 200710074940 CN 200710074940 A CN200710074940 A CN 200710074940A CN 101067775 A CN101067775 A CN 101067775A
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Abstract
This invention discloses a scanning method for capturing and tracing moving targets on infrared touch screens, in which, the screen includes a square circuit frame with CB, and infrared emission and receiving tubes are welded correspondingly on shafts X and Y of the frame to form a crossed infrared matrix, elements of a control circuit and measurement circuit are connected on the CB. After capturing a first touch coordinated by scanning, the infrared touch screen control system enters into a stage of target tracing and scanning, taking the receiving tube of touch coordinated captured in scanning each time corresponding on the X and Y shafts as the center to determine several receiving tubes adjacent to it as the moving targets of tracing scanning of the region, which can reduce scanning period greatly.
Description
Technical field
The present invention relates to infrared touch panel, refer to that especially a kind of method of infrared ray spotting scaming moving target of utilizing is relevant.
Background technology
Along with science and technology development, the appearance of electronic touch technology, touch-screen has also experienced the end of from and has kept off to high-grade development course, develops so far, and the touch-screen of various technology emerges in an endless stream, and its performance is constantly perfect.Because its simple in structure, easy to use, natural and reaction velocity is fast, save the space and be easy to plurality of advantages such as man-machine communication, at present to be widely used in fields such as leading office, Industry Control, military commanding, electronic game, multimedia teaching.
Compare with other touching technique, the infrared ray touching technique has the winning part of its uniqueness; Have and do not wear and tear, be not subjected to electric current, voltage and electrostatic interference, long service life, stablely do not have drift, anti-riot, an antifouling plurality of advantages such as can under some rugged environment, work, in addition, utilize infrared ray can also be very easy to produce the touch-screen of super large-scale, making infrared touch panel be a dark horse more and more becomes the main product in touch-screen market.
Fig. 1 is the infrared of prior art infrared touch panel, the location map of receiving tube.Among the figure, the infrared array is divided into two parts, and a part 102 is positioned on the position, edge in infrared ray touch trap setting left side, presses sequence number and arranges, and is used for the Y-axis emission scan; Another part 101 is positioned at position, infrared ray trap setting upper edge, presses sequence number and arranges, and is used for the X-axis emission scan; Other has the infrared ray receiving array, be divided into two parts, a part 103 is positioned on the edge, 102 opposite, presses sequence number and arranges, and is used for Y-axis and receives scanning, another part 104 is positioned on the edge, 101 opposite, press sequence number and arrange, be used for X-axis and receive scanning, 101,102,103,104 all is with modular form, be connected to form by connector, and each module is to be made of emission, receiving tube unit.
The wherein emission of every pair on X-axis, receiving tube all are one to one, and have identical X-axis sequence number.When touch object useless is mobile between power valve and receiving tube, receiving tube is the high-frequency pulse signal that can normally receive power valve and sent, but begin when X-direction moves if any touching object, object 105 blocking-up that to be touched of certain of X-axis or the infrared signal that some power valve sent, cause the received signal of corresponding that or a plurality of receiving tube according to the width relative attenuation of being blocked, sequence number according to this reception or power valve position, by the A/D converse routine should be arranged, calculate the width of interceptor shield portions in the optical axis passage, utilize coordinate formula again, just can know coordinate X value that object 105 moves on X-axis, same every pair of emission on Y-axis, receiving tube all is one to one, and has identical Y-axis sequence number.When touch object 105 is mobile between power valve and receiving tube, when having reception on certain or some Y-axis can't receive corresponding power valve high-frequency pulse signal, according to receiving at that time or the Y-axis sequence number of emission, just can obtain touching coordinate Y value that object 105 moves on Y-axis by said method.Take turns output pulse signal by each infrared emission tube that goes round and begins again on X, the Y-axis, scan, simultaneously also carry out signal and read being positioned at corresponding each receiving tube in its opposite, touch object 105 at the moving coordinate track of X-axis and Y-axis just with getting final product.
In order to shorten sweep time, capture the touch target fast, there are many infrared touch panel manufacturers both domestic and external to attempt utilizing the whole bag of tricks, the technology that continuous research makes new advances solves and captures the touch target fast.As described in Figure 2; Someone proposes on the basis of original sequential scanning, makes X-axis and Y-axis into and carries out sequential scanning simultaneously.As described in Figure 3; Also the power valve on X-axis and the Y-axis is divided into two-way or multichannel and sequential scanning simultaneously; Pressing major axis required sweep time calculates.Infrared receiver tube on X-axis and the Y-axis is divided thin more, and it is just few more to scan the desired time.The interleaved method of then employing that also has improves scanning captured target speed.Implement according to the method described above, catching with traditional infrared screen scanning that the speed that touches target compares is a much progress.
However, still can't discern, catch for the target of some fast moving.Reduced its range of application to a great extent.
Summary of the invention
The objective of the invention is in order to overcome the deficiencies in the prior art, utilize infrared ray to follow the tracks of scanning fast and catch the scan method of moving target thereby provide a kind of.
Main technical schemes of the present invention is: a kind of quick seizure and the scan method of following the trail of moving target on the infrared touch panel, this infrared touch panel comprises a square circuit block that is made of circuit board, on circuit block X-axis and Y-axis, be welded with infrared emission tube and receiving tube that corresponding one by one emission receives, form an infrared ray matrix that intersects anyhow, also be electrically connected with control circuit and metering circuit vigour part on the circuit board, this method is by behind first touch coordinate of scan capture, the infrared touch panel control system changes the stage of target tracking scanning over to, the touch coordinate corresponding receiving tube on X-axis and Y-axis that captures with each scanning is the center, and it determines that to adjacent both sides several receiving tubes are that scanning area is followed the trail of the scanning moving target respectively.
Described scan method in turn includes the following steps:
A. touch coordinate is found and caught to the receiving tube on noctovisor scan X-axis and the Y-axis.
B. be central point with this touch coordinate corresponding receiving tube on X-axis and Y-axis, determine that to its adjacent both sides several receiving tubes are scanning area respectively;
C. at this moment infrared touch panel only scans receiving tube on this district's X-axis and the Y-axis, finds and capture new touch coordinate again;
D. be the center with new touch coordinate corresponding receiving tube on X-axis and Y-axis again, determine that to adjacent both sides several receiving tubes are new scanning area respectively again, this district is scanned, find and catch new touch target; Constantly trace trap touches target, and adjusting with touch coordinate corresponding receiving tube on X-axis and Y-axis is that the scanning area of central point scans.
More excellent is:
With touch coordinate relative receiving tube on X-axis and Y-axis is the center, and the pipe of determining to adjacent both sides of penetrating respectively is 5---10.
Described noctovisor scan is sequential scanning; Begin sequential scanning from first receiving tube of X-axis or Y-axis, scanned one and be coupling and sweep another receiving tube, find also to catch touch coordinate.
Described noctovisor scan is scanning simultaneously; Receiving tube on X-axis and the Y-axis begins scanning simultaneously, finds and catch touch coordinate.
Described noctovisor scan is the while multi-channel scanning; Receiving tube on X-axis and the Y-axis is divided into two sections or multistage respectively begins scanning simultaneously, find also to catch touch coordinate.
Described noctovisor scan is staggered scanning; Find and catch touch coordinate.
After adopting said method, the invention has the beneficial effects as follows: utilize and follow the trail of method for scanning, shortened time scan period greatly, in this scanning area, can catch a plurality of touch targets of fast moving on the screen.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is the infrared of prior art infrared touch panel, the location map of receiving tube.
Fig. 2 is the X-axis of prior art infrared touch panel and the synoptic diagram that Y-axis scans simultaneously.
Fig. 3 is the synoptic diagram that the receiving tube on prior art infrared touch panel X-axis and the Y-axis is divided into two-way and sequential scanning simultaneously.
Fig. 4 is the planar structure synoptic diagram of specific embodiments of the invention.
Embodiment
In order to improve the noctovisor scan capture velocity, the scan method that the invention discloses a kind of quick seizure and follow the trail of moving target on the infrared touch panel.As shown in Figure 4; Touch-screen 401 is enclosed on circuit board by a plurality of infrared modules and forms.Wherein, the usage quantity of infrared module is according to the size of touch-screen and fixed.Just enumerating 19 cun touch-screens commonly used below is example, and emission array has 135 transmitter modules, it is in touch-screen 401 left sides that 60 modules are wherein arranged, be used for the scanning of Y-axis infrared, 75 modules are positioned at the upper edge of touch-screen 401, are used for the X-axis infrared is scanned.Equally, similar number receiver module is one to one arranged on the opposite of transmitter module.
The infrared array has 75*60=135 power valve, and receiving array has 75*60=135 receiving tube, is used to catch moving target on the screen.Receiving tube on scanning X-axis and the Y-axis, press sequence number from first pipe until last, promptly finish a scan period.If catch first level and smooth continuous moving coordinate, the cycle of scanning should The faster the better, and the number of times of per second interscan should be The more the better.
The present invention marks the key step of coordinate tracking, seizure to mobile purpose on the screen:
1. use earlier the sequential scanning method, first receiving tube sequential scanning successively on X-axis or the Y-axis, swept one be coupling sweep another the axle, if any touching object (stain among the figure) when on screen, occurring, the to be touched object blocking-up of certain of X-axis or the infrared signal that some power valve sent, cause the received signal of corresponding that or a plurality of receiving tube institute receiving tube according to the width relative attenuation of being blocked, sequence number according to this reception or power valve position, by the A/D converse routine should be arranged, calculate the width of interceptor shield portions in the optical axis passage, utilize coordinate formula again, just can know to have touched coordinate X value that object moves that on X-axis using the same method just to have obtained touching coordinate Y value that object moves on Y-axis.
2. continue step 1, at this moment touch-screen is a central point with the touch coordinate corresponding receiving tube on X-axis and Y-axis that captures, determine that to its adjacent both sides several receiving tubes are divided into scanning area respectively, this will decide on the touch-screen size, generally all determine that to its adjacent both sides 5--10 receiving tube is scanning area, the present invention adopts and respectively divides 5 receiving tubes to both sides is that scanning area is that example describes.
3. continue step 2, at this moment touch-screen will enter the tracking sweep phase, infrared touch panel is adjusted into the receiving tube (the pipe number among the figure shown in the arrow) that only scans on this district's X-axis and the Y-axis, as the words that respectively to divide 5 receiving tubes to both sides be scanning area, on that X-axis 5+1+5=11 receiving tube, also be 5+1+5=11 receiving tube on the Y-axis, it is just much of that with 11 of Y-axis only to scan 11 of X-axis, and be that 0.4ms calculates by single tube sweep time: one week of original scanning is 135*0.4=54ms; This one week of district of scanning now is (11+11) * 0.4=8.8ms; Faster more than 6 times than the speed of original scanning one-period, that is to say the original scanning time in one week, it is many to sweep for 6 weeks now.
4. continue step 3, sweep velocity has improved, mobile touch object on screen is the speed calculation of 3m/ second routinely, each power valve is of a size of 5.08mm, and the length of run-down is 22*5.08=111.76mm, and the time of scanning one circle is 8.8ms, 111.76mm/8.8ms=13.97mm/ms, by formula convert: 13.97m/ second compare soon more than 4 times than the translational speed of 3m/ second, can catch up with translational speed on the screen far away in the scanning area interscan.
5. continue step 4, after capturing new touch coordinate (pore among the figure) again, infrared touch panel is a central point with this coordinate corresponding receiving tube on X-axis and Y-axis again, and respectively dividing 5 receiving tubes again to its adjacent both sides respectively is scanning area (the pipe number among the figure shown in the arrow).At this moment infrared ray is adjusted into the receiving tube that only scans on this district's X-axis and the Y-axis again, and the program of scanning is same as described above.
6. continue step 5, capture new touch coordinate once more after, the circulation step 5 that goes round and begins again is followed the tracks of to move touching target and adjust scanning area, and is caught new touch coordinate fast, enters the sector scanning of next round again.
Above-mentioned scanning can be sequential scanning; Begin sequential scanning from first receiving tube of X-axis or Y-axis, scanned one and be coupling and sweep another receiving tube.Or scanning simultaneously; Receiving tube on X-axis and the Y-axis begins scanning simultaneously.Or be the while multi-channel scanning; Receiving tube on X-axis and the Y-axis is divided into two sections or multistage respectively begins scanning simultaneously.It can also be staggered scanning etc.
Utilize above-mentioned tracking method for scanning, shortened time scan period greatly, just can in this scanning area, can catch a plurality of mobile touch target of fast moving on the screen.
Claims (7)
1. catch the also scan method of tracking moving target on infrared touch screen, this infrared touch panel comprises a square circuit block that is made of circuit board, on circuit block X-axis and Y-axis, be welded with infrared emission tube and receiving tube that corresponding one by one emission receives, form an infrared ray matrix that intersects anyhow, also be electrically connected with control circuit and metering circuit vigour part on the circuit board, it is characterized in that: this method is by behind first touch coordinate of scan capture, the infrared touch panel control system changes the stage of target tracking scanning over to, the touch coordinate corresponding receiving tube on X-axis and Y-axis that captures with each scanning is the center, determines that to its adjacent both sides several receiving tubes are that scanning area is followed the trail of the scanning moving target respectively.
2. the scan method of seizure according to claim 1 and tracking moving target on infrared touch screen is characterized in that: described scan method in turn includes the following steps:
A. touch coordinate is found and caught to the receiving tube on noctovisor scan X-axis and the Y-axis.
B. be central point with this touch coordinate corresponding receiving tube on X-axis and Y-axis, determine that to its adjacent both sides several receiving tubes are scanning area respectively;
C. at this moment infrared touch panel only scans receiving tube on this district's X-axis and the Y-axis, finds and capture new touch coordinate again;
D. be the center with new touch coordinate corresponding receiving tube on X-axis and Y-axis again, determine that to adjacent both sides several receiving tubes are new scanning area respectively again, this district is scanned, find and catch new touch target; Constantly trace trap touches target, and adjusting with touch coordinate corresponding receiving tube on X-axis and Y-axis is that the scanning area of central point scans.
3. the scan method of seizure according to claim 1 and tracking moving target on infrared touch screen is characterized in that: described noctovisor scan is sequential scanning; Begin sequential scanning from first receiving tube of X-axis or Y-axis, scanned one and be coupling and sweep another receiving tube, find also to catch touch coordinate.
4. the scan method of seizure according to claim 1 and tracking moving target on infrared touch screen is characterized in that: described noctovisor scan is scanning simultaneously; Receiving tube on X-axis and the Y-axis begins scanning simultaneously, finds and catch touch coordinate.
5. the scan method of seizure according to claim 1 and tracking moving target on infrared touch screen is characterized in that: described noctovisor scan is the while multi-channel scanning; Receiving tube on X-axis and the Y-axis is divided into two sections or multistage respectively begins scanning simultaneously, find also to catch touch coordinate.
6. the scan method of seizure according to claim 1 and tracking moving target on infrared touch screen is characterized in that: described noctovisor scan is staggered scanning; Find and catch touch coordinate.
7. the scan method of seizure according to claim 1 and tracking moving target on infrared touch screen is characterized in that: with touch coordinate relative receiving tube on X-axis and Y-axis is the center, determines to penetrate pipe to adjacent both sides respectively and respectively is 5--10.
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| CN 200710074940 CN101067775A (en) | 2007-06-14 | 2007-06-14 | Scanning method for trapping and tracking moving target on infrared touch screen |
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| CN 200710074940 CN101067775A (en) | 2007-06-14 | 2007-06-14 | Scanning method for trapping and tracking moving target on infrared touch screen |
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| CN102096516A (en) * | 2009-12-15 | 2011-06-15 | 北京汇冠新技术股份有限公司 | Touch positioning method |
| CN102103440A (en) * | 2009-12-16 | 2011-06-22 | 北京汇冠新技术股份有限公司 | Infrared touch screen |
| CN102253757A (en) * | 2010-05-17 | 2011-11-23 | 北京汇冠新技术股份有限公司 | Infrared touch screen, touch system and interactive display |
| CN102253758A (en) * | 2010-05-17 | 2011-11-23 | 北京汇冠新技术股份有限公司 | Infrared touch screen, touch system and interactive display |
| CN101551729B (en) * | 2009-05-13 | 2011-12-07 | 广东威创视讯科技股份有限公司 | Infrared touch scanning method and control device, infrared touch system of the same |
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| CN101782825B (en) * | 2009-01-20 | 2012-04-11 | 日东电工株式会社 | Optical coordinate input apparatus |
| CN102495694A (en) * | 2011-11-25 | 2012-06-13 | 广州视睿电子科技有限公司 | Contact scanning method and scanning device for infrared geminate transistor touch screen and touch screen system |
| CN102566834A (en) * | 2011-12-22 | 2012-07-11 | 北京鸿合盛视数字媒体技术有限公司 | Infrared electronic whiteboard |
| CN103135816A (en) * | 2011-11-28 | 2013-06-05 | 联咏科技股份有限公司 | Method for controlling touch panel |
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| CN106055175A (en) * | 2016-05-31 | 2016-10-26 | 青岛海信电器股份有限公司 | Infrared touch screen scanning method and device, and touch screen system |
| CN106293198A (en) * | 2016-07-27 | 2017-01-04 | 中航华东光电有限公司 | Auxiliary revises the method for infrared touch point |
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| CN119165984A (en) * | 2024-08-29 | 2024-12-20 | 广州世明科技有限公司 | Touch screen accelerated scanning method, electronic device and medium |
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- 2007-06-14 CN CN 200710074940 patent/CN101067775A/en active Pending
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| CN101782825B (en) * | 2009-01-20 | 2012-04-11 | 日东电工株式会社 | Optical coordinate input apparatus |
| CN101551729B (en) * | 2009-05-13 | 2011-12-07 | 广东威创视讯科技股份有限公司 | Infrared touch scanning method and control device, infrared touch system of the same |
| CN102096516A (en) * | 2009-12-15 | 2011-06-15 | 北京汇冠新技术股份有限公司 | Touch positioning method |
| CN102103440A (en) * | 2009-12-16 | 2011-06-22 | 北京汇冠新技术股份有限公司 | Infrared touch screen |
| WO2011072588A1 (en) * | 2009-12-16 | 2011-06-23 | 北京汇冠新技术股份有限公司 | Infrared touch screen |
| CN102103440B (en) * | 2009-12-16 | 2013-12-25 | 北京汇冠新技术股份有限公司 | Infrared touch screen |
| US9052778B2 (en) | 2009-12-16 | 2015-06-09 | Beijing Irtouch Systems Co., Ltd | Infrared touch screen |
| CN102253757A (en) * | 2010-05-17 | 2011-11-23 | 北京汇冠新技术股份有限公司 | Infrared touch screen, touch system and interactive display |
| CN102253757B (en) * | 2010-05-17 | 2014-03-12 | 北京汇冠新技术股份有限公司 | Infrared touch screen, touch system and interactive display |
| CN102253758A (en) * | 2010-05-17 | 2011-11-23 | 北京汇冠新技术股份有限公司 | Infrared touch screen, touch system and interactive display |
| CN102253758B (en) * | 2010-05-17 | 2014-02-05 | 北京汇冠新技术股份有限公司 | Infrared touch screen, touch system and interactive display |
| US9395846B2 (en) | 2010-07-21 | 2016-07-19 | Beijing Irtouch Systems Co., Ltd | Touch screen having a filter for filtering interfering light signals |
| WO2012010078A1 (en) * | 2010-07-21 | 2012-01-26 | 北京汇冠新技术股份有限公司 | Touch screen and multi-channel sampling method thereof |
| CN102360255B (en) * | 2011-09-22 | 2014-02-26 | 尹作恒 | Infrared touch screen parallel scanning system and method for increasing infrared scanning speed without increasing peak current |
| CN102360255A (en) * | 2011-09-22 | 2012-02-22 | 尹作恒 | Infrared touch screen parallel scanning system and method for increasing infrared scanning speed without increasing peak current |
| CN102495694B (en) * | 2011-11-25 | 2014-12-31 | 广州视睿电子科技有限公司 | Contact scanning method and scanning device for infrared geminate transistor touch screen and touch screen system |
| CN102495694A (en) * | 2011-11-25 | 2012-06-13 | 广州视睿电子科技有限公司 | Contact scanning method and scanning device for infrared geminate transistor touch screen and touch screen system |
| CN103135816A (en) * | 2011-11-28 | 2013-06-05 | 联咏科技股份有限公司 | Method for controlling touch panel |
| CN102566834A (en) * | 2011-12-22 | 2012-07-11 | 北京鸿合盛视数字媒体技术有限公司 | Infrared electronic whiteboard |
| CN103761013A (en) * | 2014-02-17 | 2014-04-30 | 广州市泰奇克光电科技有限公司 | Random skipping type local area detecting locating method for infrared screen |
| CN105975139A (en) * | 2016-05-11 | 2016-09-28 | 青岛海信电器股份有限公司 | Touch point extraction method, device and display equipment |
| CN105975139B (en) * | 2016-05-11 | 2019-09-20 | 青岛海信电器股份有限公司 | Touch point extraction method, device and display device |
| CN106055175A (en) * | 2016-05-31 | 2016-10-26 | 青岛海信电器股份有限公司 | Infrared touch screen scanning method and device, and touch screen system |
| CN106055175B (en) * | 2016-05-31 | 2019-01-25 | 青岛海信电器股份有限公司 | Infrared touch screen scanning method and device, touch screen system |
| CN106293198A (en) * | 2016-07-27 | 2017-01-04 | 中航华东光电有限公司 | Auxiliary revises the method for infrared touch point |
| CN106293198B (en) * | 2016-07-27 | 2019-03-15 | 中航华东光电有限公司 | Auxiliary method for correcting infrared touch points |
| CN106569643A (en) * | 2016-10-27 | 2017-04-19 | 青岛海信电器股份有限公司 | Method and apparatus for positioning infrared touch screen pointing stick |
| CN119165984A (en) * | 2024-08-29 | 2024-12-20 | 广州世明科技有限公司 | Touch screen accelerated scanning method, electronic device and medium |
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