CN101382858B - Calibrating method and apparatus for touch screen equipment - Google Patents
Calibrating method and apparatus for touch screen equipment Download PDFInfo
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- CN101382858B CN101382858B CN2008102185045A CN200810218504A CN101382858B CN 101382858 B CN101382858 B CN 101382858B CN 2008102185045 A CN2008102185045 A CN 2008102185045A CN 200810218504 A CN200810218504 A CN 200810218504A CN 101382858 B CN101382858 B CN 101382858B
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Abstract
The invention relates to a calibration method and a calibration device for touch screen equipment. A coordinate system rotation coefficient is determined according to the maximum pixel values of a first coordinate and a second coordinate of display equipment; according to the coordinate system rotation coefficient, a first preset point and a second preset point located at the display equipment, and a first touch point and a second touch point which are detected by the touch screen equipment when the first and the second preset points are touched, a first coordinate rotation coefficient and a second coordinate rotation coefficient are determined and a transforming relationship which transforms an initial coordinate system of the touch screen equipment into the transformed coordinate system of the touch screen equipment, with a coordinate system direction the same as that of the display equipment; according to the transforming relationship, the touch screen equipment can output the position coordinate of the transformed coordinate system, which has the same coordinate system direction as the display equipment, thus being convenient for transforming the position coordinate into the coordinate located at the display equipment and preventing the circumstance that the real touch position is different from the display position of the display equipment, which is caused by that when the touch screen equipment is installed on the display equipment, the direction is different.
Description
Technical field
The present invention relates to the touch screen technology field, particularly a kind of calibration steps of touch panel device and calibrating installation.
Background technology
Touch-screen has obtained widespread use as a kind of simpler, ripe human-computer interaction device in more field, and the realization of existing touch screen technology mainly includes several implementations such as resistance, electric capacity, camera, infrared ray.Wherein, be example with the infrared touch panel, its basic structure be install in a certain order a display surface edge some to infrared emission component and infrared receiver component.These infrared emission components and infrared receiver component according to mode one to one form emission receive right, edge along display surface constitutes a mutually perpendicular emission receiving array, the Infrared that each infrared emission component is launched constitutes lattice structure at display surface, under the control of microcomputer system, connect each in a certain order respectively to infrared emission component and infrared receiver component, whether detect each is blocked the Infrared between infrared emission component and the infrared receiver component, judge whether have touch event to take place with this, and just can calculate the position coordinates that touch event takes place according to touching the grid node position that takes place.
Touch panel device all needed the process of a calibration before coming into operation after the installation, for the touch panel device that adopts different principle, as resistance-type, capacitive touch screen etc., its coordinate Calculation method is similar substantially mutually with infrared touch panel, all need to detect horizontal and vertical coordinate, to be combined into actual unique two-dimensional coordinate, because present touch panel device is most and display device dispatches from the factory together, the inconsistent phenomenon of coordinate system that adopted in use can not appear, therefore, the method for calibration steps that is adopted and calculating actual coordinate is also similar substantially.
Yet in fact touch panel device and display device can work alone, and are about to use on the display device that touch panel device is installed to other.Difference according to field condition, the mounting means of touch panel device may have multiple mode, thereby the not corresponding to situation of the coordinate system that coordinate system and display device adopted that may cause touch panel device to adopt, at this moment, if also calibrate according to existing calibrating mode, thereby may make the lateral coordinates of final output, the opposite or generation conversion of data of along slope coordinate, cause touch panel device to use.
Summary of the invention
The object of the present invention is to provide a kind of calibration steps and calibrating installation of touch panel device, it can be calibrated touch panel device effectively, makes that the direction of the coordinate system that final residing coordinate system of exporting of coordinate data of touch panel device and display device are adopted is identical.
For achieving the above object, the present invention by the following technical solutions:
A kind of calibration steps of touch panel device comprises step:
Detect the max pixel value of first coordinate of display device, the max pixel value of second coordinate, and, determine the coordinate system rotation coefficient according to the max pixel value of first coordinate of described display device, the max pixel value of second coordinate;
Give first preset be positioned display device, first touch point when touch panel device detects the user and touches described first preset;
Give second preset be positioned display device, second touch point when touch panel device detects the user and touches described second preset;
According to the similarities and differences of the size variation trend of second coordinate figure of the size variation trend of second coordinate figure of the similarities and differences, described second preset and first preset of the size variation trend of first coordinate figure of the size variation trend of first coordinate figure of described coordinate system rotation coefficient, described second preset and first preset and described second touch point and first touch point and described second touch point and first touch point, determine the first rotation of coordinate coefficient, the second rotation of coordinate coefficient;
According to described coordinate system rotation coefficient, the first rotation of coordinate coefficient, the second rotation of coordinate coefficient, determine that initial coordinate system with described touch panel device is converted to the transformational relation of the coordinate system after the conversion of the touch panel device identical with the coordinate system direction of described display device.
A kind of calibrating installation of touch panel device comprises:
Detection module is used to detect the max pixel value of first coordinate of display device, the max pixel value of second coordinate;
The coordinate system rotation coefficient determination module that is connected with described detection module is used for the max pixel value of first coordinate of the described display device that detects according to described detection module, the max pixel value of second coordinate, determines the coordinate system rotation coefficient;
The direction rotation of coordinate coefficient determination module that is connected with described coordinate system rotation coefficient determination module, be used for first touch point, second touch point when touching described second preset when detecting the user and touch described first preset, determine the first rotation of coordinate coefficient, the second rotation of coordinate coefficient according to described coordinate system rotation coefficient and given first preset, second preset, touch panel device;
And the transformational relation determination module that is connected with described coordinate system rotation coefficient determination module, described direction rotation of coordinate coefficient determination module, be used for according to the max pixel value of first coordinate of described coordinate system rotation coefficient, the first rotation of coordinate coefficient, the second rotation of coordinate coefficient and described touch panel device, the max pixel value of second coordinate, determine the initial coordinate system of described touch panel device is converted to the transformational relation of the coordinate system of the touch panel device identical with the coordinate system direction of described display device.
Scheme according to the invention described above, it is according to the max pixel value of first coordinate of display device, the max pixel value of second coordinate is determined the coordinate system rotation coefficient, and by giving first preset that is positioned display device, second preset, the user touches after these two points, correspondingly touch panel device can detect first touch point of the corresponding initial coordinate system that is positioned at touch panel device, second touch point, thereby can be according to determined coordinate system rotation coefficient, second preset and first preset, first coordinate figure of first touch point and the size variation trend of second coordinate figure, and second touch point and first coordinate figure of first touch point and the size variation trend of second coordinate figure, determine the first rotation of coordinate coefficient, the second rotation of coordinate coefficient, thereby can be according to the first rotation of coordinate coefficient, the second rotation of coordinate coefficient, the coordinate system rotation coefficient, determine the initial coordinate system of touch panel device is converted to the transformational relation of the coordinate system of the touch panel device identical with the coordinate system direction of display device, thereby touch panel device is after detecting touch event, can be according to initial coordinate system and this transformational relation of this touch panel device, export the position coordinates on the coordinate system that is positioned at the touch panel device consistent with the coordinate system direction of display device, position coordinates on the coordinate system after promptly changing, make that the direction of the coordinate system that final coordinate data coordinate system of exporting of living in of touch panel device and display device are adopted is identical, so that the position coordinates on the coordinate system after will changing is converted to the coordinate that is positioned at display device, thereby coordinate that touch panel device detected and the inconsistent situation of the shown coordinate position of display device have been avoided.
Description of drawings
Fig. 1 is a schematic flow sheet of determining each coefficient of rotary in the inventive method specific embodiment;
Fig. 2 is a schematic flow sheet of determining transformation relation in the inventive method specific embodiment;
Fig. 3 is the synoptic diagram of coordinate system transformational relation embodiment one among the present invention program;
Fig. 4 is the synoptic diagram of coordinate system transformational relation embodiment two among the present invention program;
Fig. 5 is the synoptic diagram of coordinate system transformational relation embodiment three among the present invention program;
Fig. 6 is the synoptic diagram of coordinate system transformational relation embodiment four among the present invention program;
Fig. 7 is the structural representation of apparatus of the present invention specific embodiment.
Embodiment
Below be described in detail at specific embodiments of the invention.
According to the common address custom of people, in following explanation, with lateral coordinates is that first coordinate, vertical coordinate are that second coordinate is illustrated, correspondingly, the lateral coordinates pixel refers to the max pixel value of first coordinate, vertical coordinate pixel refers to the max pixel value of second coordinate, the horizontal ordinate coefficient of rotary refers to the first rotation of coordinate coefficient, the ordinate coefficient of rotary refers to the second rotation of coordinate coefficient, it should be noted that this not illustrating limit in order to orientation and employed coordinate system to touch panel device, display device.
Because under normal conditions, touch panel device all is that one side with broad is lateral coordinates at the detection position coordinate time, with narrower one side is along slope coordinate, and when mounted, people get used to touch panel device is installed according to identical horizontal stroke, longitudinal direction with display device, therefore, in following specific embodiment of the present invention, describe according to identical transverse and longitudinal direction installation with display device with touch panel device.
Referring to shown in Figure 1, be the schematic flow sheet of determining each coefficient of rotary in the specific embodiment of the inventive method, it specifically comprises:
Step S101: give first preset be positioned display device, touch panel device detects the position coordinates that is positioned at the initial coordinate system of touch panel device when the user touches the correspondence position of this first preset, is designated as first touch point, enters step S102;
Step S102: give second preset be positioned display device, touch panel device detects the position coordinates that is positioned at the initial coordinate system of touch panel device when the user touches the correspondence position of this second preset, is designated as second touch point, enters step S103;
Step S103: detect lateral coordinates pixel, the along slope coordinate pixel of display device, and the lateral coordinates pixel of judging display device if not, then enters step S104, if then enter step S109 whether greater than the along slope coordinate pixel of display device;
Step S104: at this moment, because the lateral coordinates pixel of display device is less than the along slope coordinate pixel of display device, illustrate that this moment, touch panel device was vertically to install, the lateral coordinates direction that is display device is narrower one side of touch panel device, and because the lateral coordinates direction of touch panel device normally is positioned at one side of broad, promptly vertical at this moment longitudinal direction of installing, therefore, need carry out the integral body rotation to coordinate system, so that the horizontal stroke after the touch panel device conversion, the horizontal stroke of along slope coordinate direction and display device, along slope coordinate direction unanimity, so the coordinate system rotation coefficient is defined as 1, enters step S105;
Step S105: whether the along slope coordinate value of judging described second touch point is identical with respect to the size variation trend of the along slope coordinate value of described first preset with the along slope coordinate value of described second preset with respect to the size variation trend of the along slope coordinate value of described first touch point, enters step S106;
Step S106: if the judged result of above-mentioned steps S105 is identical, the variation tendency that two horizontal ordinates in the coordinate system then are described is identical, need not be rotated the horizontal ordinate direction, therefore, the horizontal ordinate coefficient of rotary is defined as 0, if the judged result of step S105 is different, the variation tendency that two horizontal ordinates in the coordinate system then are described is opposite, need be rotated the horizontal ordinate direction, the horizontal ordinate variation tendency of the coordinate system after making touch panel device change is identical with display device, therefore, the horizontal ordinate coefficient of rotary is defined as 1, enters step S107;
Step S107: whether the lateral coordinates value of judging second touch point is identical with respect to the size variation trend of the lateral coordinates value of described first preset with the lateral coordinates value of described second preset with respect to the size variation trend of the lateral coordinates value of first touch point, enters step S108;
Step S108: if the judged result of above-mentioned steps S107 is identical, the variation tendency that two ordinates in the coordinate system then are described is identical, need not be rotated the ordinate direction, therefore, the ordinate coefficient of rotary is defined as 0, if the judged result of step S107 is different, the variation tendency that two ordinates in the coordinate system then are described is opposite, need be rotated the ordinate direction, the ordinate variation tendency of the coordinate system after making touch panel device change is identical with display device, therefore, the ordinate coefficient of rotary is defined as 1;
Step S109: at this moment, because the lateral coordinates pixel of display device is greater than the along slope coordinate pixel of display device, illustrate that this moment, touch panel device was laterally to install, the lateral coordinates direction that is display device is one side of the broad of touch panel device, and because the horizontal direction of touch panel device also is the one side that is positioned at broad usually, promptly vertical at this moment horizontal direction of installing, this moment touch panel device horizontal stroke, the horizontal stroke of along slope coordinate direction and display device, along slope coordinate direction unanimity, therefore, do not need this moment coordinate system is carried out the integral body rotation, so the coordinate system rotation coefficient is defined as 0, enters step S110;
Step S110: whether the lateral coordinates value of judging described second touch point is identical with respect to the size variation trend of the lateral coordinates value of described first preset with the lateral coordinates value of described second preset with respect to the size variation trend of the lateral coordinates value of described first touch point, enters step S111;
Step S111: if the judged result of above-mentioned steps S110 is identical, the variation tendency that two horizontal ordinates in the coordinate system then are described is identical, need not be rotated the horizontal ordinate direction, therefore, the horizontal ordinate coefficient of rotary is defined as 0, if the judged result of step S110 is different, the variation tendency that two horizontal ordinates in the coordinate system then are described is opposite, need be rotated the horizontal ordinate direction, the horizontal ordinate variation tendency of the coordinate system after making touch panel device change is identical with display device, therefore, the horizontal ordinate coefficient of rotary is defined as 1, enters step S112;
Step S112: whether the along slope coordinate value of judging second touch point is identical with respect to the size variation trend of the along slope coordinate value of described first preset with the along slope coordinate value of described second preset with respect to the size variation trend of the along slope coordinate value of first touch point, enters step S113;
Step S113: if the judged result of above-mentioned steps S112 is identical, the variation tendency that two ordinates in the coordinate system then are described is identical, need not be rotated the ordinate direction, therefore, the ordinate coefficient of rotary is defined as 0, if the judged result of step S112 is different, the variation tendency that two ordinates in the coordinate system then are described is opposite, need be rotated the ordinate direction, the ordinate variation tendency of the coordinate system after making touch panel device change is identical with display device, therefore, the ordinate coefficient of rotary is defined as 1.
Wherein, in above steps, also can not above-mentioned sequencing between step S105, S106 and step S107, the S108, can be to carry out simultaneously between the two, also can be to determine earlier to determine the horizontal ordinate coefficient of rotary again after the ordinate coefficient of rotary, similarly, also can not be above-mentioned sequencing between step S110, S111 and step S112, the S113, can be to carry out simultaneously between the two, also can be to determine earlier to determine the horizontal ordinate coefficient of rotary again after the ordinate coefficient of rotary.
For consideration to calculating simplicity and treatment effeciency, in order to determine horizontal ordinate coefficient of rotary, ordinate coefficient of rotary more efficiently, when given first preset, second preset, to carry out following qualification to this first preset, second preset: promptly the lateral coordinates value of given first preset less than the lateral coordinates value of second preset, the along slope coordinate value of first preset is less than the along slope coordinate value of second preset.
Thereby, according to first preset after the above-mentioned qualification, second preset, when the similarities and differences of above-mentioned variation tendency according to lateral coordinates value, along slope coordinate value are determined horizontal ordinate coefficient of rotary, ordinate coefficient of rotary, can be reduced to following deterministic process:
At the coordinate system rotation coefficient is 0 o'clock:
Whether the lateral coordinates value of judging first touch point is less than the lateral coordinates value of second preset, if, then according to the lateral coordinates value of above-mentioned first preset of having set lateral coordinates value less than second preset, illustrate that the variation tendency on the horizontal ordinate direction is identical, therefore need not be rotated horizontal ordinate, so the horizontal ordinate coefficient of rotary is defined as 0, if be not less than, illustrate that then the variation tendency on the horizontal ordinate direction is opposite, need be rotated horizontal ordinate, therefore the horizontal ordinate coefficient of rotary is defined as 1;
Whether the along slope coordinate value of judging first touch point is less than the along slope coordinate value of second preset, if, then according to the along slope coordinate value of above-mentioned first preset of having set along slope coordinate value less than second preset, illustrate that the variation tendency on the ordinate direction is identical, therefore need not be rotated ordinate, so the ordinate coefficient of rotary is defined as 0, if be not less than, illustrate that then the variation tendency on the horizontal ordinate direction is opposite, need be rotated ordinate, therefore the ordinate coefficient of rotary is defined as 1;
At the coordinate system rotation coefficient is 1 o'clock:
Whether the lateral coordinates value of judging first touch point is less than the lateral coordinates value of second preset, if, owing to need be rotated to coordinate system, and according to the lateral coordinates value of above-mentioned first preset of having set lateral coordinates value less than second preset, illustrate that then the variation tendency on the ordinate direction is identical, therefore need not be rotated ordinate, so the ordinate coefficient of rotary is defined as 0, if be not less than, illustrate that then the variation tendency on the ordinate direction is opposite, need be rotated ordinate, therefore the ordinate coefficient of rotary is defined as 1;
Whether the along slope coordinate value of judging first touch point is less than the along slope coordinate value of second preset, if, owing to need be rotated to coordinate system, and according to the along slope coordinate value of above-mentioned first preset of having set along slope coordinate value less than second preset, illustrate that then the variation tendency on the horizontal ordinate direction is identical, therefore need not be rotated horizontal ordinate, so the horizontal ordinate coefficient of rotary is defined as 0, if be not less than, illustrate that then the variation tendency on the horizontal ordinate direction is opposite, need be rotated horizontal ordinate, therefore the horizontal ordinate coefficient of rotary is defined as 1.
According to above-mentioned definite good coordinate system rotation coefficient, horizontal ordinate coefficient of rotary, ordinate coefficient of rotary, also need determine the initial coordinate of touch panel device system is converted to the transformational relation of the coordinate system after the conversion of the touch panel device identical with the coordinate system direction of display device, to finish calibration process, be convenient to the positioning step in the subsequent process.
Referring to shown in Figure 2, be the schematic flow sheet of determining transformational relation in the specific embodiments of the invention, it specifically comprises step:
Step S201: in this step, understand for convenience of explanation and conveniently, is that detected position coordinates is designated as (Px with touch panel device by initial coordinate, Py), the position coordinates that is positioned at the respective point on the coordinate system after touch panel device and the conversion identical with the coordinate system direction of display device after changeing by the transformational relation in the inventive method is designated as (Qx, Qy), enter step S202;
Step S202: judge whether determined coordinate system rotation coefficient equals 1, if the coordinate system rotation coefficient equals 1, then enter step S203, if the coordinate system rotation coefficient is not equal to 1, promptly the coordinate system rotation coefficient equals at 0 o'clock, then enters step S207;
Step S203: judge that whether the horizontal ordinate coefficient of rotary is 1, enters step S204;
Step S204: if the horizontal ordinate coefficient of rotary is 1, the lateral coordinates value in the coordinate system of the result who then the along slope coordinate pixel in the described initial coordinate system is deducted the along slope coordinate value in the initial coordinate system after, i.e. Qx=yMax-Py as described conversion; If the horizontal ordinate coefficient of rotary is not 1, be that the horizontal ordinate coefficient of rotary is 0 o'clock, with the lateral coordinates value in the coordinate system of the along slope coordinate value in the initial coordinate system after as described conversion, be Qx=Py, enter step S205, wherein yMax represents the along slope coordinate pixel in the initial coordinate system, i.e. max pixel value on the along slope coordinate direction;
Step S205: judge that whether the ordinate coefficient of rotary is 1, enters step S206;
Step S206: if the ordinate coefficient of rotary is 1, the along slope coordinate value in the coordinate system of the result who then the lateral coordinates pixel in the described initial coordinate system is deducted the lateral coordinates value in the initial coordinate system after, i.e. Qy=xMax-Px as described conversion; If the ordinate coefficient of rotary is not 1, be that the ordinate coefficient of rotary is 0 o'clock, with the along slope coordinate value in the coordinate system of the lateral coordinates value in the initial coordinate system after as described conversion, be Qy=Px, wherein xMax represents the lateral coordinates pixel in the initial coordinate system, i.e. max pixel value on the lateral coordinates direction;
Step S207: judge that whether the horizontal ordinate coefficient of rotary is 1, enters step S208;
Step S208: if described horizontal ordinate coefficient of rotary is 1, lateral coordinates value in the coordinate system of the result that lateral coordinates pixel in the described initial coordinate system is deducted the lateral coordinates value in the initial coordinate system after as described conversion, be Qx=xMax-Px, if the horizontal ordinate coefficient of rotary is not 1, be that the horizontal ordinate coefficient of rotary is 0 o'clock, with the lateral coordinates value in the coordinate system of the lateral coordinates value in the described initial coordinate system after as described conversion, promptly Qx=Px enters step S209;
Step S209: judge that whether the ordinate coefficient of rotary is 1, enters step S210;
Step S210: if the ordinate coefficient of rotary is 1, along slope coordinate value in the coordinate system of the result that along slope coordinate pixel in the described initial coordinate system is deducted the along slope coordinate value in the initial coordinate system after as described conversion, be Qy=yMax-Py, if the ordinate coefficient of rotary is not 1, be that the ordinate coefficient of rotary is 0 o'clock, with the along slope coordinate value in the coordinate system of the along slope coordinate value in the described initial coordinate system after, i.e. Qy=Py as described conversion.
Wherein, in above steps, also can not above-mentioned sequencing between step S203, S204 and step S205, the S206, can be to carry out simultaneously between the two, it also can be the horizontal ordinate of determining again behind the ordinate of determining earlier after converted coordinate is after converted coordinate is, similarly, also can not above-mentioned sequencing between step S207, S208 and step S209, the S210, can be to carry out simultaneously between the two, also can be the horizontal ordinate of determining again behind the ordinate of determining earlier after converted coordinate is after converted coordinate is.
At the calibration steps in the above-mentioned specific embodiment, it can determine the initial coordinate system of touch panel device is converted to the transformational relation of the coordinate system of the touch panel device identical with the coordinate system direction of display device, the embodiment that makes up with several concrete coordinate systems is elaborated to above-mentioned transformational relation below, as mentioned above, it is the use-pattern according to existing touch panel device, the initial coordinate system of default touch panel device is a lateral coordinates with one side of the broad of touch panel device, one side with narrower be that lateral coordinates describes.
Wherein, in the detailed description of following each transformational relation specific embodiment, represent that with the entity line initial coordinate of touch panel device is, the coordinate system of touch panel device after representing to change with two-dot chain line, identical with the coordinate system direction of display device.Suppose that the touch point is the A point, and in diagram, distance from this touch point A point to the touch panel device left end is a1, is a2, is b1, is b2 to the distance of touch panel device lower end to the distance of touch panel device upper end to the distance of touch panel device right-hand member, and hypothesis touch panel device detected this touch point A point is positioned at the coordinate that the initial coordinate of touch panel device is and is designated as (Px, Py), after conversion, the coordinate of the coordinate system of this touch point A point after the conversion of touch panel device be designated as (Qx, Qy).
Referring to shown in Figure 3, be the synoptic diagram of coordinate system transformational relation embodiment one of the present invention.
As can be seen from Figure 3, the coordinate of A point in touch point in the initial coordinate of touch panel device system be (Px, Py)=(a1, b1), the coordinate in the coordinate system of this touch point A point after the conversion of touch panel device be (Qx, Qy)=(a2, b2).Wherein, in this diagram, since the initial coordinate of default touch panel device system with the broad of touch panel device be lateral coordinates, and meanwhile with narrower be lateral coordinates, and touch panel device is transversely arranged, thus xMax=a1+a2, yMax=b1+b2.
Below be elaborated at the transfer process of coordinate.
By detecting lateral coordinates pixel, the along slope coordinate pixel of display device, the lateral coordinates pixel of learning display device is greater than the along slope coordinate pixel, according to aforementioned preset relation, as can be known touch panel device be with broad while be its lateral coordinates, with narrower be its along slope coordinate, hence one can see that need not carry out the integral body conversion to coordinate system, so the coordinate system rotation coefficient is defined as 0, i.e. xyMirror=0.
According to the relation of the coordinate in the diagram, adopt aforementioned judgment mode simultaneously, can determine horizontal ordinate coefficient of rotary xMirror=1, ordinate coefficient of rotary yMirror=1.
At this moment, because coordinate system rotation coefficient xyMirror=0, and horizontal ordinate coefficient of rotary xMirror=1, so horizontal ordinate Qx=xMax-Px=xMax-a1=a2 after the conversion, and ordinate coefficient of rotary yMirror=1, so the ordinate Qy=yMax-Py=yMax-b1=b2 after the conversion is (a2 through the coordinate in the definite coordinate system of touch point after conversion in above-mentioned this transformational relation conversion back promptly, b2), this be identical shown in the actual diagram.
Referring to shown in Figure 4, be the synoptic diagram of coordinate system transformational relation embodiment two of the present invention.
As can be seen from Figure 4, the coordinate of A point in touch point in the initial coordinate of touch panel device system be (Px, Py)=(b1, a1), the coordinate in the coordinate system of this touch point A point after the conversion of touch panel device be (Qx, Qy)=(a2, b2).Wherein, in this diagram, since the initial coordinate of default touch panel device system with the broad of touch panel device be lateral coordinates, and meanwhile with narrower be lateral coordinates, and touch panel device is vertical arrangement, thus xMax=b1+b2, yMax=a1+a2.
Below be elaborated at the transfer process of coordinate.
By detecting lateral coordinates pixel, the along slope coordinate pixel of display device, the lateral coordinates pixel of learning display device is less than the along slope coordinate pixel, and according to aforementioned preset relation, as can be known touch panel device be with broad while be its lateral coordinates, with narrower be its along slope coordinate, hence one can see that need carry out the integral body conversion to coordinate system, so the coordinate system rotation coefficient is defined as 1, i.e. xyMirror=1.
According to the relation of the coordinate in the diagram, adopt aforementioned judgment mode simultaneously, can determine horizontal ordinate coefficient of rotary xMirror=1, ordinate coefficient of rotary yMirror=1.
At this moment, because coordinate system rotation coefficient xyMirror=1, and horizontal ordinate coefficient of rotary xMirror=1, so horizontal ordinate Qx=yMax-Py=yMax-a1=a2 after the conversion, and ordinate coefficient of rotary yMirror=1, so the ordinate Qy=xMax-Px=xMax-b1=b2 after the conversion is (a2 through the coordinate in the definite coordinate system of touch point after conversion in above-mentioned this transformational relation conversion back promptly, b2), this be identical shown in the actual diagram.
In fact, in above-mentioned each example, since preestablished touch panel device and be with broad while be its lateral coordinates, with narrower be its along slope coordinate, therefore, can be directly with touch panel device broad pixel value on one side as its lateral coordinates pixel, with the pixel value on the narrower one side of touch panel device as its along slope coordinate pixel, thereby can save the lateral coordinates pixel of senses touch screen equipment, the step of along slope coordinate pixel.
Wherein, in above-mentioned specific descriptions, all be the habituation of considering the use of touch panel device, the acquiescence touch panel device is that one side with broad is lateral coordinates at the detection position coordinate time, with narrower one side is that along slope coordinate describes, thereby can be only according to the lateral coordinates pixel of display device, the along slope coordinate pixel is determined the coordinate system rotation coefficient, in fact, the solution of the present invention, can also be under situation the about initial coordinate of touch panel device system not being preset, while is according to the lateral coordinates pixel of touch panel device, the lateral coordinates pixel of along slope coordinate pixel and display device, the along slope coordinate pixel, determine the coordinate system rotation coefficient, its concrete mode is:
When the lateral coordinates pixel of touch panel device greater than the lateral coordinates pixel of the along slope coordinate pixel of touch panel device and display device during greater than the along slope coordinate pixel of display device, illustrate two coordinate systems all be with one side of the broad of touch panel device as lateral coordinates, with narrower one side of touch panel device as along slope coordinate, the horizontal stroke, the along slope coordinate direction that are touch panel device are consistent with horizontal stroke, the along slope coordinate direction of display device, thereby do not need coordinate system is rotated, so the coordinate system rotation coefficient is defined as 0;
When the lateral coordinates pixel of touch panel device less than the lateral coordinates pixel of the along slope coordinate pixel of touch panel device and display device during less than the along slope coordinate pixel of display device, illustrate two coordinate systems all be with narrower one side of touch panel device as lateral coordinates, with one side of the broad of touch panel device as along slope coordinate, the horizontal stroke, the along slope coordinate direction that are touch panel device are consistent with horizontal stroke, the along slope coordinate direction of display device, thereby do not need coordinate system is rotated, so the coordinate system rotation coefficient is defined as 0;
When the lateral coordinates pixel of touch panel device along slope coordinate pixel less than touch panel device, and the lateral coordinates pixel of display device is during greater than the along slope coordinate pixel of display device, the initial coordinate system that touch panel device is described is that narrower one side with touch panel device is as lateral coordinates, with one side of the broad of touch panel device as along slope coordinate, and the coordinate system of display device be with corresponding to one side of the broad of touch panel device as lateral coordinates, with corresponding to the narrower one side of touch panel device as along slope coordinate, thereby need be rotated coordinate system, so that the horizontal stroke after the touch panel device conversion, the horizontal stroke of along slope coordinate direction and display device, along slope coordinate direction unanimity is so be defined as 1 with the coordinate system rotation coefficient;
When the lateral coordinates pixel of touch panel device along slope coordinate pixel greater than touch panel device, and the lateral coordinates pixel of display device is during less than the along slope coordinate pixel of display device, the initial coordinate system that touch panel device is described is that one side with the broad of touch panel device is as lateral coordinates, with narrower one side of touch panel device as along slope coordinate, and the coordinate system of display device be with corresponding to narrower one side of touch panel device as lateral coordinates, with corresponding to one side of touch panel device broad as along slope coordinate, thereby need be rotated coordinate system, it is the horizontal stroke of touch panel device, the horizontal stroke of along slope coordinate direction and display device, along slope coordinate direction unanimity is so be defined as 1 with the coordinate system rotation coefficient.
In addition, in the foregoing description one, embodiment two, all are use habits of considering touch panel device, with the initial coordinate system that preestablishes touch panel device be with the broad of touch panel device while be its lateral coordinates, narrower with touch panel device for its along slope coordinate is that example describes, while below at the initial coordinate of touch panel device be with it narrower be its lateral coordinates, with its broad for its along slope coordinate be that example describes.
Referring to shown in Figure 5, be the synoptic diagram of coordinate system transformational relation embodiment three of the present invention.
As can be seen from Figure 5, the coordinate of A point in touch point in the initial coordinate of touch panel device system be (Px, Py)=(b1, a1), the coordinate in the coordinate system of this touch point A point after the conversion of touch panel device be (Qx, Qy)=(b2, a2).Wherein, in this diagram, the max pixel value xMax=b1+b2 on the lateral coordinates direction of touch panel device, the max pixel value yMax=a1+a2 on the along slope coordinate direction of touch panel device.
Below be elaborated at the transfer process of coordinate.
By detecting lateral coordinates pixel, the along slope coordinate pixel of display device, the lateral coordinates pixel of learning display device is less than the along slope coordinate pixel, lateral coordinates pixel, along slope coordinate pixel by the senses touch screen equipment, the lateral coordinates pixel of learning touch panel device is less than the along slope coordinate pixel, be that the two all is that the one side with the touch panel device broad is along slope coordinate, with narrower one side is lateral coordinates, thereby can carry out the integral body rotation to coordinate system, so the coordinate system rotation coefficient is defined as 0, i.e. xyMirror=0.
According to the relation of the coordinate in the diagram, adopt aforementioned judgment mode simultaneously, can determine horizontal ordinate coefficient of rotary xMirror=1, ordinate coefficient of rotary yMirror=1.
At this moment, because coordinate system rotation coefficient xyMirror=0, and horizontal ordinate coefficient of rotary xMirror=1, so horizontal ordinate Qx=xMax-Px=xMax-b1=b2 after the conversion, and ordinate coefficient of rotary yMirror=1, so the ordinate Qy=yMax-Py=yMax-a1=a2 after the conversion is (b2 through the coordinate in the definite coordinate system of touch point after the conversion of touch panel device in above-mentioned this transformational relation conversion back promptly, a2), this be identical shown in the actual diagram.
Referring to shown in Figure 6, be the synoptic diagram of coordinate system transformational relation embodiment four of the present invention.
As can be seen from Figure 6, the coordinate of A point in touch point in the initial coordinate of touch panel device system be (Px, Py)=(a1, b1), the coordinate in the coordinate system of this touch point A point after the conversion of touch panel device be (Qx, Qy)=(b2, a2).Wherein, in this diagram, the max pixel value xMax=a1+a2 on the lateral coordinates direction of touch panel device, the max pixel value yMax=b1+b2 on the along slope coordinate direction of touch panel device.
Below be elaborated at the transfer process of coordinate.
By detecting lateral coordinates pixel, the along slope coordinate pixel of display device, the lateral coordinates pixel of learning display device is greater than the along slope coordinate pixel, lateral coordinates pixel, along slope coordinate pixel by the senses touch screen equipment, the lateral coordinates pixel of learning touch panel device is less than the along slope coordinate pixel, thereby need carry out the integral body rotation to coordinate system, so the coordinate system rotation coefficient is defined as 1, i.e. xyMirror=1.
According to the relation of the coordinate in the diagram, adopt aforementioned judgment mode simultaneously, can determine horizontal ordinate coefficient of rotary xMirror=1, ordinate coefficient of rotary yMirror=1.
At this moment, because coordinate system rotation coefficient xyMirror=1, and horizontal ordinate coefficient of rotary xMirror=1, so horizontal ordinate Qx=yMax-Py=yMax-b1=b2 after the conversion, and ordinate coefficient of rotary yMirror=1, so the ordinate Qy=xMax-Px=xMax-a1=a2 after the conversion is (b2 through the coordinate in the definite coordinate system of touch point after the conversion of touch panel device in above-mentioned this transformational relation conversion back promptly, a2), this be identical shown in the actual diagram.
Wherein, in definite process of above-mentioned horizontal ordinate coefficient of rotary, ordinate coefficient of rotary and transformational relation, for the consideration of calculating simplicity, be that the situation during less than the along slope coordinate of second preset is specifically described less than the along slope coordinate of the lateral coordinates of second preset and first preset with the lateral coordinates of the first given preset, under the situation different of given first preset with second preset relation each other, the concrete account form and the computation process that are adopted can be adjusted to some extent, do not give unnecessary details one by one at this.
According to the calibration steps of above-mentioned touch panel device, the present invention also provides a kind of calibrating installation of touch panel device, and it specifically comprises:
The coordinate system rotation coefficient determination module 702 that is connected with detection module 701, the lateral coordinates pixel, the along slope coordinate pixel that are used for the display device that detects according to described detection module 701 are determined the coordinate system rotation coefficient;
The horizontal ordinate coefficient of rotary determination module 703 that is connected with coordinate system rotation coefficient determination module 702, be used for first touch point, second touch point when touching described second preset when detecting the user and touch described first preset, determine horizontal ordinate coefficient of rotary, ordinate coefficient of rotary according to described coordinate system rotation coefficient and given first preset, second preset, touch panel device;
And the transformational relation determination module 704 that is connected with described coordinate system rotation coefficient determination module 702, described horizontal ordinate coefficient of rotary determination module 703, be used for lateral coordinates pixel, along slope coordinate pixel, determine that initial coordinate system with described touch panel device is converted to the transformational relation of the coordinate system after the conversion of the touch panel device identical with the coordinate system direction of described display device according to described coordinate system rotation coefficient, horizontal ordinate coefficient of rotary, ordinate coefficient of rotary and described touch panel device.
Wherein, described detection module 701, lateral coordinates pixel, the along slope coordinate pixel that can also be used for the senses touch screen equipment, at this moment, coordinate system rotation coefficient determination module 702 can be determined the coordinate system rotation coefficient according to lateral coordinates pixel, the along slope coordinate pixel of lateral coordinates pixel, along slope coordinate pixel and the display device of touch panel device.
Wherein, the concrete deterministic process of coordinate system rotation coefficient, horizontal ordinate coefficient of rotary, ordinate coefficient of rotary and transformational relation can not repeat them here as described in the above-mentioned method.
Above-described embodiment of 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. the calibration steps of a touch panel device is characterized in that, comprises step:
Detect the max pixel value of first coordinate of display device, the max pixel value of second coordinate, and, determine the coordinate system rotation coefficient according to the max pixel value of first coordinate of described display device, the max pixel value of second coordinate;
Give first preset be positioned described display device, first touch point when touch panel device detects the user and touches described first preset;
Give second preset be positioned described display device, second touch point when touch panel device detects the user and touches described second preset;
According to the similarities and differences of the size variation trend of second coordinate figure of the size variation trend of second coordinate figure of the similarities and differences, described second preset and described first preset of the size variation trend of first coordinate figure of the size variation trend of first coordinate figure of described coordinate system rotation coefficient, described second preset and described first preset and described second touch point and described first touch point and described second touch point and described first touch point, determine the first rotation of coordinate coefficient, the second rotation of coordinate coefficient;
According to described coordinate system rotation coefficient, the first rotation of coordinate coefficient, the second rotation of coordinate coefficient, determine the initial coordinate system of described touch panel device is converted to the transformational relation of the coordinate system of the touch panel device identical with the coordinate system direction of described display device.
2. the calibration steps of touch panel device according to claim 1 is characterized in that, definite mode of described coordinate system rotation coefficient comprises:
When the max pixel value of first coordinate of described display device during greater than the max pixel value of second coordinate of described display device, described coordinate system rotation coefficient is 0;
When the max pixel value of first coordinate of described display device during less than the max pixel value of second coordinate of described display device, described coordinate system rotation coefficient is 1.
3. the calibration steps of touch panel device according to claim 1 is characterized in that, also comprises:
The max pixel value of first coordinate of senses touch screen equipment, the max pixel value of second coordinate;
Described coordinate system rotation coefficient, the while is determined according to the max pixel value of first coordinate of described touch panel device, the max pixel value of second coordinate.
4. the calibration steps of touch panel device according to claim 3 is characterized in that, definite mode of described coordinate system rotation coefficient comprises:
When the max pixel value of first coordinate of described touch panel device greater than the max pixel value of first coordinate of the max pixel value of second coordinate of described touch panel device and described display device during greater than the max pixel value of second coordinate of described display device, described coordinate system rotation coefficient is 0;
When the max pixel value of first coordinate of described touch panel device less than the max pixel value of first coordinate of the max pixel value of second coordinate of described touch panel device and described display device during less than the max pixel value of second coordinate of described display device, described coordinate system rotation coefficient is 0;
When the max pixel value of first coordinate of described touch panel device less than the max pixel value of first coordinate of the max pixel value of second coordinate of described touch panel device and described display device during greater than the max pixel value of second coordinate of described display device, described coordinate system rotation coefficient is 1;
When the max pixel value of first coordinate of described touch panel device greater than the max pixel value of first coordinate of the max pixel value of second coordinate of described touch panel device and described display device during less than the max pixel value of second coordinate of described display device, described coordinate system rotation coefficient is 1.
5. according to the calibration steps of claim 2 or 4 described touch panel devices, it is characterized in that definite mode of the described first rotation of coordinate coefficient, the described second rotation of coordinate coefficient comprises:
When described coordinate system rotation coefficient is 0:
Whether first coordinate figure of judging described second touch point is identical with respect to the size variation trend of first coordinate figure of described first preset with first coordinate figure of described second preset with respect to the size variation trend of first coordinate figure of described first touch point, if it is identical, the then described first rotation of coordinate coefficient is 0, if different, the then described first rotation of coordinate coefficient is 1;
Whether second coordinate figure of judging described second touch point is identical with respect to the size variation trend of second coordinate figure of described first preset with second coordinate figure of described second preset with respect to the size variation trend of second coordinate figure of described first touch point, if it is identical, the then described second rotation of coordinate coefficient is 0, if different, the then described second rotation of coordinate coefficient is 1;
When described coordinate system rotation coefficient is 1,
Whether second coordinate figure of judging described second touch point is identical with respect to the size variation trend of second coordinate figure of described first preset with second coordinate figure of described second preset with respect to the size variation trend of second coordinate figure of described first touch point, if it is identical, the then described first rotation of coordinate coefficient is 0, if different, the then described first rotation of coordinate coefficient is 1;
Whether first coordinate figure of judging described second touch point is identical with respect to the size variation trend of first coordinate figure of described first preset with first coordinate figure of described second preset with respect to the size variation trend of first coordinate figure of described first touch point, if it is identical, the then described second rotation of coordinate coefficient is 0, if different, the then described second rotation of coordinate coefficient is 1.
6. according to the calibration steps of any described touch panel device of claim 1 to 4, it is characterized in that:
First coordinate figure of described second preset is greater than first coordinate figure of described first preset, and second coordinate figure of described second preset is greater than second coordinate figure of described first preset.
7. according to the calibration steps of claim 2 or 4 described touch panel devices, it is characterized in that:
First coordinate figure of described second preset is greater than first coordinate figure of described first preset, and second coordinate figure of described second preset is greater than second coordinate figure of described first preset;
Definite mode of the described first rotation of coordinate coefficient, the described second rotation of coordinate coefficient comprises:
When described coordinate system rotation coefficient is 0:
Whether first coordinate figure of judging described second touch point is greater than first coordinate figure of described first touch point, if the then described first rotation of coordinate coefficient is 0, if not, the then described first rotation of coordinate coefficient is 1;
Whether second coordinate figure of judging described second touch point is greater than second coordinate figure of described first touch point, if the then described second rotation of coordinate coefficient is 0, if not, the then described second rotation of coordinate coefficient is 1;
When described coordinate system rotation coefficient is 1,
Whether second coordinate figure of judging described second touch point is greater than second coordinate figure of described first touch point, if the then described first rotation of coordinate coefficient is 0, if not, the then described first rotation of coordinate coefficient is 1;
Whether first coordinate figure of judging described second touch point is greater than first coordinate figure of described first touch point, if the then described second rotation of coordinate coefficient is 0, if not, the then described second rotation of coordinate coefficient is 1.
8. according to the calibration steps of claim 2 or 4 described touch panel devices, it is characterized in that, determine that the mode of transformational relation that initial coordinate system with described touch panel device is converted to the coordinate system of the touch panel device identical with the coordinate system direction of described display device specifically comprises:
When described coordinate system rotation coefficient is 1:
If the described first rotation of coordinate coefficient is 0, with first coordinate figure in the coordinate system of second coordinate figure in the described initial coordinate system after as described conversion;
If the described first rotation of coordinate coefficient is 1, first coordinate figure in the coordinate system of the result that the max pixel value of second coordinate in the described initial coordinate system is deducted second coordinate figure in the initial coordinate system after as described conversion;
If the described second rotation of coordinate coefficient is 0, with second coordinate figure in the coordinate system of first coordinate figure in the described initial coordinate system after as described conversion;
If the described second rotation of coordinate coefficient is 1, second coordinate figure in the coordinate system of the result that the max pixel value of first coordinate in the described initial coordinate system is deducted first coordinate figure in the initial coordinate system after as described conversion;
When described coordinate system rotation coefficient is 0:
If the described first rotation of coordinate coefficient is 0, with first coordinate figure in the coordinate system of first coordinate figure in the described initial coordinate system after as described conversion;
If the described first rotation of coordinate coefficient is 1, first coordinate figure in the coordinate system of the result that the max pixel value of first coordinate in the described initial coordinate system is deducted first coordinate figure in the initial coordinate system after as described conversion;
If the described second rotation of coordinate coefficient is 0, with second coordinate figure in the coordinate system of second coordinate figure in the described initial coordinate system after as described conversion;
If the described second rotation of coordinate coefficient is 1, second coordinate figure in the coordinate system of the result that the max pixel value of second coordinate in the described initial coordinate system is deducted second coordinate figure in the initial coordinate system after as described conversion;
9. the calibrating installation of a touch panel device is characterized in that, comprising:
Detection module is used to detect the max pixel value of first coordinate of display device, the max pixel value of second coordinate;
The coordinate system rotation coefficient determination module that is connected with described detection module is used for the max pixel value of first coordinate of the described display device that detects according to described detection module, the max pixel value of second coordinate, determines the coordinate system rotation coefficient;
The direction rotation of coordinate coefficient determination module that is connected with described coordinate system rotation coefficient determination module, be used for first touch point, second touch point when touching described second preset when detecting the user and touch described first preset, determine the first rotation of coordinate coefficient, the second rotation of coordinate coefficient according to described coordinate system rotation coefficient and given first preset, second preset, touch panel device;
And the transformational relation determination module that is connected with described coordinate system rotation coefficient determination module, described direction rotation of coordinate coefficient determination module, be used for according to the max pixel value of first coordinate of described coordinate system rotation coefficient, the first rotation of coordinate coefficient, the second rotation of coordinate coefficient and described touch panel device, the max pixel value of second coordinate, determine the initial coordinate system of described touch panel device is converted to the transformational relation of the coordinate system of the touch panel device identical with the coordinate system direction of described display device.
10. the calibrating installation of touch panel device according to claim 9 is characterized in that:
Described detection module can also be used for the max pixel value of first coordinate of described senses touch screen equipment, the max pixel value of second coordinate;
Described coordinate system rotation coefficient determination module also is used for the max pixel value of first coordinate of the max pixel value of max pixel value, second coordinate according to first coordinate of described touch panel device and described display device, the max pixel value of second coordinate is determined described coordinate system rotation coefficient.
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| CN101644984B (en) * | 2009-05-20 | 2012-09-26 | 无锡中星微电子有限公司 | Method and device for detecting touch screen |
| CN102193661B (en) * | 2010-03-01 | 2014-05-28 | 北京魔力科技有限公司 | Intelligent positioning and calibration method |
| CN102163100A (en) * | 2011-04-01 | 2011-08-24 | 深圳清华大学研究院 | Contact positioning method and device for electronic touch screen |
| CN102419648B (en) * | 2011-06-30 | 2014-11-05 | 北京汇冠新技术股份有限公司 | Touch point coordinate acquiring method and system and touch screen calibrating method and system |
| CN106201091B (en) * | 2016-07-13 | 2019-01-08 | 北京集创北方科技股份有限公司 | The coordinate processing method and device of touch screen |
| CN111316207A (en) * | 2017-11-23 | 2020-06-19 | 深圳市柔宇科技有限公司 | Head-mounted display equipment and automatic calibration method of touch device of head-mounted display equipment |
| CN112468863A (en) * | 2020-11-24 | 2021-03-09 | 北京字节跳动网络技术有限公司 | Screen projection control method and device and electronic device |
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