CN101477419A - Touch positioning method and apparatus - Google Patents
Touch positioning method and apparatus Download PDFInfo
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- CN101477419A CN101477419A CNA2008102195865A CN200810219586A CN101477419A CN 101477419 A CN101477419 A CN 101477419A CN A2008102195865 A CNA2008102195865 A CN A2008102195865A CN 200810219586 A CN200810219586 A CN 200810219586A CN 101477419 A CN101477419 A CN 101477419A
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Abstract
The invention relates to a method and a device for touch location. The method comprises the following steps: a detection pulse signal is produced and used for scanning a display screen of display equipment from a reference point in sequence; and the detection pulse signal is detected, the time difference between a touch point and the reference point which are scanned by the detection pulse signal is calculated, and a position coordinate of the touch point is determined according to the time difference. The invention adopts the scheme that the detection pulse signal is produced and used for scanning the display screen from the reference point in sequence; when a touch object touches a display area of the display screen and carries out the touch action, the detection pulse signal scans the touch point and is received, and the position coordinate of the touch point is determined according to the time difference between the touch point and the reference point which are scanned by the detection pulse signal; and the coordinate transformation from a location detecting device to the display equipment is not required to be conducted. Therefore, the deviation of the touch location can be reduced, and the precision and the accuracy of the location are improved.
Description
Technical field
The present invention relates to the touch screen technology field, particularly a kind of method and device that touches the location.
Background technology
The realization of existing touch screen technology, modes such as infrared type touch, capacitance touch, resistive touch have been generally included, in the touch-screen of these modes, display device and locating and detecting device are separated from each other, thereby cause display position and position, touch point to have deviation easily.With the infrared touch panel is example, it is to receive electron tube with infrared emission to form the infrared emission receiving array, when realizing detection and localization, the touch objects that enters the touch area shelters from a certain or several infrared emission light of touch apparatus, cause corresponding infrared receiving tube can't receive the light that infrared transmitting tube is launched, thereby according to the light that is blocked this to or several number order to the infrared emission receiving tube determine that this touch point is positioned at the position coordinates on this positioning equipment, determine the displaing coordinate of this touch point on display device according to the corresponding relation of this touch apparatus and display device again.Because the alignment error that touch apparatus and display device may exist when mounted, cause the corresponding relation of touch apparatus and display device not accurate enough easily, thereby the displaing coordinate that causes final location to obtain is offset with respect to original touch point, and bearing accuracy is accurate inadequately.
Summary of the invention
At above-mentioned problems of the prior art, the object of the present invention is to provide a kind of method and device that touches the location, it can reduce to touch the skew of location, improves the degree of accuracy of location.
For achieving the above object, the present invention by the following technical solutions:
A kind of method that touches the location comprises step:
Produce and detect pulse signal, and begin to scan successively the display screen of display device with this detection pulse signal from reference point;
Detect described detection pulse signal, calculate described detection pulse signal and scan the mistiming that touch point and described detection pulse signal scan described reference point;
Determine described touch point position coordinate according to the described mistiming.
A kind of device that touches the location comprises:
The main control module is used for control signal generating module and produce detects pulse signal, and scans the touch point according to described detection pulse signal and determine described touch point position coordinate with the mistiming that described detection pulse signal scans reference point;
With the described signal generator module that described main control module is connected, be used to accept the control generation detection pulse signal of described main control module;
Begin to scan successively the signal scanning module of the display screen of display device with described detection pulse signal from reference point;
With the signal detection module that described main control module, described signal scanning module are connected, be used to detect described detection pulse signal, and the information that will detect described detection pulse signal sends to described main control module.
Scheme according to the invention described above, it is to detect pulse signal by producing, and begin to scan successively display screen from reference point with this detection pulse signal, carry out touch action as the touch objects touch in the viewing area of display screen, when this detection pulse signal scans the touch point, receive this detection pulse signal, and scan this touch point according to this detection pulse signal and determine the touch point position coordinate with the mistiming that scans reference point, it is when positioning, detecting pulse signal is the scanning display screen, and by detecting definite touch point position coordinate of mistiming that pulse signal scans touch point and reference point, when positioning, carry out the coordinate conversion from the locating and detecting device to the display device need not in prior art, thereby can reduce to touch the skew of location, improve the degree of accuracy and the accuracy of location.
Description of drawings
Fig. 1 is the schematic flow sheet that the present invention touches the method embodiment one of location;
Fig. 2 is the principle schematic that detects pulse signal scanning display screen;
Fig. 3 is the schematic flow sheet that the present invention touches the method embodiment two of location;
Fig. 4 is the structural representation that the present invention touches the device specific embodiment of location.
Embodiment
Referring to shown in Figure 1, be the schematic flow sheet that the present invention touches the method embodiment one of location, it comprises step:
Step S101: produce to detect pulse signal, and begin to scan successively the display screen of display device from reference point, enter step S102 with this detection pulse signal;
Step S102: detect described detection pulse signal, calculate the mistiming that this detection pulse signal scans touch point and this detection pulse signal scanning reference point, enter step S103;
Step S103: determine the touch point position coordinate according to this mistiming.
According to the method in the above-mentioned present embodiment, it is to detect pulse signal by producing, and begin to scan successively display screen from reference point with this detection pulse signal, touch in the viewing area as touch objects, when this detection pulse signal scans the touch point, receive this detection pulse signal, and scan this touch point according to this detection pulse signal and determine the touch point position coordinate with the mistiming that scans reference point, it is when positioning, detecting pulse signal is the scanning display screen, and by detecting definite touch point position coordinate of mistiming that pulse signal scans touch point and reference point, need not to carry out the conversion of position coordinates during the location, thereby can reduce to touch the skew of location, improve the degree of accuracy and the accuracy of location.
Wherein, above-mentioned detection pulse signal can be and the time-multiplexed pulse signal of the shows signal of described display screen, concrete time division multiplexing mode, can be to insert in the gap of shows signal to detect pulse signal, both can be to insert in each gap of shows signal to detect pulse signal, the shows signal that also can be fixed distance length is inserted the detection pulse signal again, perhaps also can adopt other mode.
In addition, detect pulse signal scanning display screen, can be to begin from described reference point, scan all pixels of display screen successively according to the row order, as shown in Figure 2, after promptly having scanned all pixels of initial row successively, all pixels to next line scan successively again, by that analogy, perhaps also can be to begin from reference point, scan all pixels of display screen successively according to the row order, after promptly having scanned all pixels of initial column successively, all pixels to next column scan successively again, by that analogy, perhaps also can be the scan modes that adopts other.
According to above-mentioned scan mode, when the detection pulse signal scans different pixels, need the different time periods, therefore the position coordinates and the time period of each pixel are one to one, thereby can be according to determining corresponding position coordinates from the scanning reference point to the mistiming that scans this pixel.Wherein, as mentioned above, can adopt different scan modes that all pixels of display screen are scanned, therefore, because the scan mode that is adopted may be different, after the identical time period of distance, the different pixel that scan mode scanned is also different, therefore, determining the touch point position coordinate time according to the mistiming, also need to determine according to the scan mode of this detection pulse signal simultaneously, for fixed scan mode, then the mistiming correspondence of Que Dinging definite pixel and position coordinates thereof.
Referring to shown in Figure 3, be the schematic flow sheet that the present invention touches the method embodiment two of location, in the present embodiment, be mainly that it has further been specialized and has received the mode that detects pulse signal with the difference of the foregoing description one, it specifically comprises step:
Step S201: produce to detect pulse signal, this detection pulse signal begins to scan successively the display screen of display device from reference point, enters step S202;
Step S202: the image generator spare that described detection pulse signal drives display screen produces light signal, enters step S203 subsequently;
Step S203: detect, receive described light signal, and calculate the mistiming that detects this light signal and detect pulse signal scanning reference point, enter step S204;
Step S204: according to described mistiming calculating touch point position coordinate.
In the present embodiment, in the time of on detecting pulse signal scanning display screen, this detects the image generator spare generation light signal that pulse signal drives display device, this light signal can be complete bright signal, it also can be light signal with certain fixed frequency, to distinguish mutually with the normal shows signal of display screen, after receiving this light signal, the mistiming that can obtain scanning according to the moment of the moment that receives this light signal and detection pulse signal scanning reference point, and according to definite corresponding touch point position coordinate of mistiming.
Identical in other technologies feature in the present embodiment and the foregoing description one do not repeat them here.
Referring to shown in Figure 4, be the structural representation of the device specific embodiment of touch of the present invention location, it comprises:
With the signal generator module 402 that described main control module 401 is connected, be used to accept the control generation detection pulse signal of described main control module 401;
With the signal scanning module 403 that described signal generator module 402 is connected, be used to adopt described detection pulse signal to begin to scan successively the display screen of display device from reference point;
With the signal detection module 404 that described main control module 401, described signal scanning module 403 are connected, be used to detect described detection pulse signal, and the information that will detect described detection pulse signal sends to described main control module.
According to the device in the above-mentioned present embodiment, the control that signal generator module 402 is accepted main control module 401 produces the detection pulse signal, begin to scan successively the display screen of display device from reference point with this detection pulse signal, touch the viewing area as touch objects, when this detection pulse signal scans the touch point, receive this detection pulse signal, and scan this touch point according to this detection pulse signal and determine the touch point position coordinate with the mistiming that scans reference point, it is when the location of carrying out, be by detecting definite touch point position coordinate of mistiming that pulse signal scans touch point and reference point, need not to carry out the coordinate conversion from the locating and detecting device to the display device when promptly locating, thereby can reduce to touch the skew of location, improve the degree of accuracy and the accuracy of location.
Wherein, the detection pulse signal that signal generator module 402 is produced can be and the time-multiplexed pulse signal of the shows signal of described display screen, concrete time division multiplexing mode, can be to insert in the gap of shows signal to detect pulse signal, both can be to insert in each gap of shows signal to detect pulse signal, the shows signal that also can be fixed distance length is inserted the detection pulse signal again, perhaps also can adopt other mode.
According to above-mentioned scan mode, when detecting pulse signal and scan different pixels, need the different time periods, so position coordinates is one to one with the time period, thereby can determines the position coordinates of correspondence according to the mistiming.Wherein, as mentioned above, can adopt different scan modes that all pixels of display screen are scanned, difference according to the scan mode that is adopted, the distance the identical time period after, also different at the different pixels that scan mode scanned, therefore, determining the touch point position coordinate time according to the mistiming, also need to determine according to the scan mode of this detection pulse signal simultaneously, for fixed scan mode, then the mistiming correspondence of Que Dinging definite pixel and position coordinates thereof.
Connected mode between signal detection module 403 and the main control module 401 both can be wireless connections, also can be wired connection.
In addition, above-mentioned signal detection module 403 can be a photoelectric pen, and when this signal detection module was photoelectric pen, this photoelectric pen also needed to possess simultaneously the function of the above-mentioned light signal of identification.。
Below be that photoelectric pen is that the concrete position fixing process of example is described in detail with the signal detection module.
The control that signal generator module 402 receives main control module 401 produces a series of detection pulse signal, this detects the shows signal time division multiplex of pulse signal and display device, specifically can be to insert this detection pulse signal in the gap of shows signal, and scan the display screen of display device with this detection pulse signal successively.Detect the image generator spare generation light signal that pulse signal drives display device, this light signal can be complete bright signal, also can be the light signal with certain fixed frequency, to distinguish mutually with normal shows signal.
The user adopts photoelectric pen to touch and writes, photoelectric pen touches display screen, because the user can have the time of a pause on display screen when adopting the photoelectric pen operation, and the frequency that detects pulse signal is higher, therefore, on display screen, stop during this period of time at photoelectric pen, must have and detect the touch point that pulse signal scans this photoelectric pen touch, photoelectric pen receives this light signal, and this light signal converted to behind the electric signal send to main control module 401 by wired or wireless mode, after main control module 401 receives, receive the moment of this light signal and detect the mistiming in the moment of pulse signal scanning reference point and determine the touch point position coordinate that this photoelectric pen is write according to photoelectric pen.
Wherein, consider that photoelectric pen is when touching, quite approaching with display screen, therefore, distance between this photoelectric pen and the main control module is also very likely quite approaching, and photoelectric pen the time do not have time clock feature usually in design, therefore, can determine the mistiming with the moment of detecting pulse signal scanning reference point for the basis according to the moment that the main control module receives the electric signal that photoelectric pen sends, and determine the touch point position coordinate according to this mistiming:
For example, the distance of considering photoelectric pen and main control module is quite approaching, and photoelectric pen to send a signal to the speed of main control module very high, therefore, photoelectric pen can be ignored the transmission time that electric signal sends to the main control module, the moment that directly the main control module is received the signal that photoelectric pen sends receives moment of above-mentioned light signal as photoelectric pen, promptly detects the moment that pulse signal scans the touch point;
Perhaps accurately considering under the situation in transmission time, according to the distance of photoelectric pen and main control module and from photoelectric pen the transmission mode to the main control module, can preestablish one from photoelectric pen the Preset Time length in transmission time to the main control module, do not have at photoelectric pen under the situation of time clock feature, the time that the moment that the main control module is received the signal that photoelectric pen sends deducts this Preset Time length gained receives the moment of above-mentioned light signal as photoelectric pen, promptly detect the moment that pulse signal scans the touch point, to realize more accurate touch location, perhaps also can adopt other algorithm to compensate.
After main control module 401 has been determined the touch point position coordinate according to the mistiming, this touch point position coordinate can also be sent to equipment such as computing machine, PCs, so that realization is to the control and treatment of touch point.
Each embodiment of above-described the present invention does not constitute the qualification to protection domain of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (10)
1, a kind of method that touches the location is characterized in that, comprises step:
Produce and detect pulse signal, and begin to scan successively the display screen of display device with this detection pulse signal from reference point;
Detect described detection pulse signal, calculate described detection pulse signal and scan the mistiming that touch point and described detection pulse signal scan described reference point;
Determine described touch point position coordinate according to the described mistiming.
2, the method for touch according to claim 1 location, it is characterized in that: described detection pulse signal is positioned at the gap of the shows signal of described display screen.
3, the method for touch according to claim 1 location, it is characterized in that, when described detection pulse signal scans display screen, the image-display units that described detection pulse signal drives described display screen produces light signal, and detects described detection pulse signal by detecting described light signal.
4, the method for touch according to claim 3 location is characterized in that, is scanned the moment of described touch point the moment that receives described light signal as described detection pulse signal.
According to the method for any described touch of claim 1 to 4 location, it is characterized in that 5, described detection pulse signal specifically comprises from the mode that reference point begins to scan successively display screen:
Begin from described reference point, scan each pixel in the described display screen successively according to row order or row order.
6, a kind of device that touches the location is characterized in that, comprising:
The main control module is used for control signal generating module and produce detects pulse signal, and scans the touch point according to described detection pulse signal and determine described touch point position coordinate with the mistiming that described detection pulse signal scans reference point;
With the described signal generator module that described main control module is connected, be used to accept the control generation detection pulse signal of described main control module;
Begin to scan successively the signal scanning module of the display screen of display device with described detection pulse signal from reference point;
With the signal detection module that described main control module, described signal scanning module are connected, be used to detect described detection pulse signal, and the information that will detect described detection pulse signal sends to described main control module.
7, the device of touch according to claim 6 location is characterized in that, is wireless connections or wired connection between described signal detection module and the described main control module.
8, the device of touch according to claim 6 location is characterized in that the shows signal of described detection pulse signal and described display screen is a time multiplexing signal.
9, according to the device of claim 6 or 7 or 8 described touch location, it is characterized in that described signal detection module is a photoelectric pen.
10, the device of touch according to claim 9 location is characterized in that,
The moment that described main control module receives the signal of described photoelectric pen transmission is the moment that described detection pulse signal scans described touch point;
Perhaps
The time that the moment that described main control module receives the signal that described photoelectric pen sends deducts Preset Time length gained is the moment that described detection pulse signal scans described touch point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102195865A CN101477419B (en) | 2008-12-02 | 2008-12-02 | Touch positioning method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102195865A CN101477419B (en) | 2008-12-02 | 2008-12-02 | Touch positioning method and apparatus |
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| Publication Number | Publication Date |
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| CN101477419A true CN101477419A (en) | 2009-07-08 |
| CN101477419B CN101477419B (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102195865A Expired - Fee Related CN101477419B (en) | 2008-12-02 | 2008-12-02 | Touch positioning method and apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102597927A (en) * | 2009-10-28 | 2012-07-18 | 艾勒博科技股份有限公司 | Input device, and method for detecting the contact position of the device |
| CN103186280A (en) * | 2011-12-28 | 2013-07-03 | 阿尔卑斯电气株式会社 | Input device and electronic apparatus |
| CN103888571A (en) * | 2014-03-19 | 2014-06-25 | 上海斐讯数据通信技术有限公司 | Intelligent device and control method for turning off alarm in intelligent device |
| CN105320360A (en) * | 2014-07-29 | 2016-02-10 | 中强光电股份有限公司 | Touch device and touch sensing method thereof |
-
2008
- 2008-12-02 CN CN2008102195865A patent/CN101477419B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102597927A (en) * | 2009-10-28 | 2012-07-18 | 艾勒博科技股份有限公司 | Input device, and method for detecting the contact position of the device |
| CN103186280A (en) * | 2011-12-28 | 2013-07-03 | 阿尔卑斯电气株式会社 | Input device and electronic apparatus |
| CN103186280B (en) * | 2011-12-28 | 2016-07-06 | 阿尔卑斯电气株式会社 | Input equipment and electronic equipment |
| CN103888571A (en) * | 2014-03-19 | 2014-06-25 | 上海斐讯数据通信技术有限公司 | Intelligent device and control method for turning off alarm in intelligent device |
| CN105320360A (en) * | 2014-07-29 | 2016-02-10 | 中强光电股份有限公司 | Touch device and touch sensing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101477419B (en) | 2010-09-15 |
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Address after: 510670 Guangdong Province, Guangzhou high tech Industrial Development Zone Kezhu Road No. 233 Patentee after: Wei Chong group Limited by Share Ltd Address before: 510663 Guangzhou province high tech Industrial Development Zone, Guangdong, Cai road, No. 6, No. Patentee before: Guangdong Weichuangshixun Science and Technology Co., Ltd. |
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Granted publication date: 20100915 Termination date: 20181202 |
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