CN105487712A

CN105487712A - Method and device for positioning candidate touch point and touch screen equipment

Info

Publication number: CN105487712A
Application number: CN201510869523.4A
Authority: CN
Inventors: 王武军; 薛晓光
Original assignee: Qingdao Hisense Electronics Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2015-12-02
Filing date: 2015-12-02
Publication date: 2016-04-13
Anticipated expiration: 2035-12-02
Also published as: CN105487712B

Abstract

The embodiments of the invention disclose a method and a device for positioning a candidate touch point and touch screen equipment, relate to the field of touch technology and can improve the positioning precision of a touch point. According to the specific solution, the method comprises: acquiring a light path voltage value on each light path in a first scanning direction and a second scanning direction within a scanning period; assigning the light path voltage value of each scanning blind area in the first scanning direction and the second scanning direction; determining a touch area in the first scanning direction according to the light path voltage value on each light path in the first scanning direction and the light path voltage value of each scanning blind area in the first scanning direction, and determining a touch area in the second scanning direction according to the light path voltage value on each light path in the second scanning direction and the light path voltage value of each scanning blind area in the second scanning direction; and calculating the intersection of the touch area in the first scanning direction and the touch area in the second scanning direction to obtain a candidate touch point. The embodiments of the invention are applied to a process of positioning a touch point.

Description

A kind of method of locating candidate touch point, device and touch-screen equipment

Technical field

The present invention relates to technical field of touch control, particularly relate to a kind of method of locating candidate touch point, device and touch-screen equipment.

Background technology

Along with the proposition of novel human-machine interaction technology-touch screen technology, the input control mode of electronic product changes touch-screen control mode into by traditional keyboard or mouse control mode gradually.Compared to traditional input control mode, touch screen technology can provide the man-machine interaction more simplified service for user.

Wherein, infrared touch technology is a kind of common touch screen technology.The orthogonal structure of infrared touch mask that infrared touch technology adopts, infrared touch mask is made up of a long transmitting side, long reception limit, a short transmitting side and a short receptor limit.

In prior art, for the situation that multiple touch points touches, infrared touch technology generally adopts and calculates length, minor face is just clearing off road (long limit as shown in Figure 1 is just clearing off the minor face shown in road and Fig. 2 and just clearing off road) and length, minor face tiltedly clears off in road (long limit as shown in Figure 3 tiltedly clears off road and minor face as shown in Figure 4 tiltedly clears off road) the common factor locating candidate touch point of the touch area that the light path that is blocked is formed, to determine candidate touch point set (namely possible touch point), then true and false judgement is carried out from the candidate touch point the set of candidate touch point, thus determine real touch point.

Concrete, in prior art, infrared touch technology is when carrying out location, candidate touch point, the light path that is blocked can be determined in the following manner: according to the intensity of the light signal that each receiving light receives in the light path of its correspondence, determine light path magnitude of voltage corresponding to this light path (intensity of the light signal that receiving light receives is higher, and light path magnitude of voltage corresponding to light path is larger); Judge whether this light path magnitude of voltage is less than default binary-state threshold, if this light path magnitude of voltage is less than default binary-state threshold, then can determine that this light path is blocked.

But for Fig. 1, Problems existing is: because some touch points (touch point 4 as shown in Figure 1) is positioned at scan blind spot, the i.e. pitch portions (touch point is as shown in Figure 1 positioned at light path 4 and light path 5 pitch portions) of adjacent optical path, any light path can't be blocked in these touch points; Therefore determine to be blocked in the process of light path above-mentioned, then can not scan and obtain corresponding light path magnitude of voltage, thus the omission of these touch points can be caused, thus affect touch point positioning precision.

Summary of the invention

Embodiments of the invention provide a kind of method of locating candidate touch point, device and touch-screen equipment, during in order to solve prior art scanning touch point, the problem of the omission of touch point may be there is, the possibility of the omission of touch point can be reduced, thus improve touch point positioning precision.

For achieving the above object, embodiments of the invention adopt following technical scheme:

The first aspect of the embodiment of the present invention, provide a kind of method of locating candidate touch point, be applied to touch-screen equipment, described method comprises:

Within a scan period, obtain the light path magnitude of voltage in each light path on light path magnitude of voltage on the first direction of scanning in each light path and the second direction of scanning, the light path magnitude of voltage in each light path described is the magnitude of voltage that light signal that receiving light corresponding to each light path described receives is corresponding;

For the light path magnitude of voltage assignment of each scan blind spot on the light path magnitude of voltage of each scan blind spot on described first direction of scanning and described second direction of scanning, on described first direction of scanning, on the light path magnitude of voltage of each scan blind spot and described second direction of scanning, the light path magnitude of voltage of each scan blind spot is all less than the first preset voltage value, described first preset voltage value is light path when not being blocked, the light path magnitude of voltage of the light signal that receiving light corresponding to this light path receives;

According to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on described first direction of scanning and described first direction of scanning, determine the touch area on described first direction of scanning, and according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on described second direction of scanning and described second direction of scanning, determine the touch area on described second direction of scanning;

Calculate the common factor of the touch area on described first direction of scanning and the touch area on described second direction of scanning, obtain candidate touch point.

Embodiment of the present invention second aspect, provide a kind of device of locating candidate touch point, be contained in touch-screen equipment, described device comprises:

Acquisition module, for within a scan period, obtain the light path magnitude of voltage in each light path on light path magnitude of voltage on the first direction of scanning in each light path and the second direction of scanning, the light path magnitude of voltage in each light path described is the magnitude of voltage that light signal that receiving light corresponding to each light path described receives is corresponding;

Assignment module, for the light path magnitude of voltage assignment of each scan blind spot on the light path magnitude of voltage of each scan blind spot on described first direction of scanning and described second direction of scanning, on described first direction of scanning, on the light path magnitude of voltage of each scan blind spot and described second direction of scanning, the light path magnitude of voltage of each scan blind spot is all less than the first preset voltage value, described first preset voltage value is light path when not being blocked, the light path magnitude of voltage of the light signal that receiving light corresponding to this light path receives;

Determination module, for the light path magnitude of voltage according to each scan blind spot on the light path magnitude of voltage in each light path on described first direction of scanning and described first direction of scanning, determine the touch area on described first direction of scanning, and according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on described second direction of scanning and described second direction of scanning, determine the touch area on described second direction of scanning;

Computing module, for calculating the common factor of the touch area on described first direction of scanning and the touch area on described second direction of scanning, obtains candidate touch point.

The embodiment of the present invention third aspect, provides a kind of touch-screen equipment, comprising:

Storer, for storing one group of executable program code;

Processor, for performing one group of executable program code that described storer stores, and specifically performs the method for the locating candidate touch point described in embodiment of the present invention first aspect.

The method of the locating candidate touch point that the embodiment of the present invention provides, device and touch-screen equipment, can within a scan period, obtains the light path magnitude of voltage in each light path on light path magnitude of voltage on the first direction of scanning in each light path and the second direction of scanning; It is the light path magnitude of voltage assignment of each scan blind spot on the light path magnitude of voltage of each scan blind spot on the first direction of scanning and the second direction of scanning; According to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the first direction of scanning and the first direction of scanning, determine the touch area on the first direction of scanning, and according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the second direction of scanning and the second direction of scanning, determine the touch area on the second direction of scanning; Calculate the common factor of the touch area on the first direction of scanning and the touch area on the second direction of scanning, obtain candidate touch point.

With prior art, whether be less than default binary-state threshold according to the light path magnitude of voltage in light path, determine whether this light path is blocked, can exist because some touch points are positioned at scan blind spot, the omission of these touch points can be caused to compare; In this programme, when locating candidate touch point, not only take into account the light path magnitude of voltage in each light path, it can also be the light path magnitude of voltage assignment of scan blind spot, and determine touch area according to the light path magnitude of voltage in each light path in conjunction with the light path magnitude of voltage of each scan blind spot, and locate touch point.

Because the light path magnitude of voltage composed for scan blind spot is less than the first preset voltage value (when a light path is not blocked, the light path magnitude of voltage of the light signal of the receiving light reception that this light path is corresponding), namely represent the touch point comprising in this scan blind spot and can block light path; Therefore, in the process of locating candidate touch point, in conjunction with the light path magnitude of voltage of scan blind spot, then can not exist and not block any light path due to the touch point in this blind area and cause can not determine out corresponding touch area, thus cause the problem of the omission of touch point.

In sum, by this programme, can reduce in the position fixing process of touch point, the possibility that touch point is omitted, thus improve touch point positioning precision.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Zheng Sao direction, the one long limit schematic diagram that Fig. 1 provides for the embodiment of the present invention;

A kind of minor face that Fig. 2 provides for the embodiment of the present invention is just sweeping direction schematic diagram;

Xie Sao direction, the one long limit schematic diagram that Fig. 3 provides for the embodiment of the present invention;

A kind of minor face that Fig. 4 provides for the embodiment of the present invention tiltedly sweeps direction schematic diagram;

The method flow diagram of a kind of locating candidate touch point that Fig. 5 provides for the embodiment of the present invention;

A kind of touch area common factor schematic diagram that Fig. 6 provides for the embodiment of the present invention;

The another kind of touch area common factor schematic diagram that Fig. 7 provides for the embodiment of the present invention;

The method flow diagram of the another kind of locating candidate touch point that Fig. 8 provides for the embodiment of the present invention;

The method flow diagram of the another kind of locating candidate touch point that Fig. 9 provides for the embodiment of the present invention;

The method flow diagram of the another kind of locating candidate touch point that Figure 10 provides for the embodiment of the present invention;

The method flow diagram of the another kind of locating candidate touch point that Figure 11 provides for the embodiment of the present invention;

The light path magnitude of voltage distribution schematic diagram of each light path on a kind of first direction of scanning that Figure 12 provides for the embodiment of the present invention;

On a kind of first direction of scanning that Figure 13 provides for the embodiment of the present invention each light path with and the light path magnitude of voltage distribution schematic diagram of scan blind spot;

On a kind of first direction of scanning that Figure 14 provides for the embodiment of the present invention each light path with and the light path magnitude of voltage distribution schematic diagram of scan blind spot;

The method flow diagram of the another kind of locating candidate touch point that Figure 15 provides for the embodiment of the present invention;

On a kind of first direction of scanning that Figure 16 provides for the embodiment of the present invention each light path with and the schematic diagram that mutually contrasts of the light path magnitude of voltage of scan blind spot and default binary-state threshold;

The distribution schematic diagram of a kind of touch area that Figure 17 provides for the embodiment of the present invention;

The method flow diagram of the another kind of locating candidate touch point that Figure 18 provides for the embodiment of the present invention;

A kind of distribution schematic diagram of touch area determined based on light path magnitude of voltage ground distribution situation in Figure 13 that Figure 19 provides for the embodiment of the present invention;

A kind of distribution schematic diagram of touch area determined based on light path magnitude of voltage ground distribution situation in Figure 14 that Figure 20 provides for the embodiment of the present invention;

On a kind of first direction of scanning that Figure 21 provides for the embodiment of the present invention each light path with and the point-like broken line distribution schematic diagram of light path magnitude of voltage of scan blind spot;

The distribution schematic diagram of the touch area that Figure 22 determines based on light path magnitude of voltage ground distribution situation in Figure 13 for the another kind that the embodiment of the present invention provides;

The distribution schematic diagram of the touch area that Figure 23 determines based on light path magnitude of voltage ground distribution situation in Figure 14 for the another kind that the embodiment of the present invention provides;

The method flow diagram of the another kind of locating candidate touch point that Figure 24 provides for the embodiment of the present invention;

The composition schematic diagram of the device of a kind of locating candidate touch point that Figure 25 provides for the embodiment of the present invention;

The composition schematic diagram of the device of the another kind of locating candidate touch point that Figure 26 provides for the embodiment of the present invention;

The composition schematic diagram of a kind of touch-screen equipment that Figure 27 provides for the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

In addition, term " system " and " network " are often used interchangeably in this article herein.Term "and/or" herein, being only a kind of incidence relation describing affiliated partner, can there are three kinds of relations in expression, and such as, A and/or B, can represent: individualism A, exists A and B simultaneously, these three kinds of situations of individualism B.In addition, character "/" herein, general expression forward-backward correlation is to the relation liking a kind of "or".

The method of the locating candidate touch point that the embodiment of the present invention provides, can be applied in the process of touch point, location of touch-screen equipment.Wherein, as Figure 1-Figure 4, the touch-screen of touch-screen equipment comprises long limit and minor face.As shown in Fig. 1 or Fig. 3, the long limit of touch-screen comprises a pair transmitting side and receives limit, and as shown in figures 2 or 4, the minor face of touch-screen comprises a pair transmitting side and receives limit.This touch-screen equipment can be infrared touch-screen equipment, and also can be other touch-screen equipment, the present invention limit touch-screen equipment.

If touch-screen equipment is infrared touch-screen equipment, transmitting side refers to infrared emission limit, receives limit and refers to infrared receiver limit.Infrared emission limit is arranged with infrared signal emission lamp, infrared receiver limit is arranged with IR signal reception lamp, as Figure 1-4, infrared signal emission lamp and IR signal reception lamp are one to one, infrared signal emission lamp when being in opening for launching infrared signal (light signal in the embodiment of the present invention) to the IR signal reception lamp corresponding with this infrared signal emission lamp.

In actual applications, the infrared signal emission lamp on the touch-screen of infrared touch-screen equipment and the number of IR signal reception lamp are determined according to the size of the touch-screen of infrared touch-screen equipment.

Embodiment one

The embodiment of the present invention provides a kind of method of locating candidate touch point, is applied to touch-screen equipment, and as shown in Figure 5, the method for this locating candidate touch point comprises:

The device of S101, locating candidate touch point, within a scan period, obtains the light path magnitude of voltage in each light path on light path magnitude of voltage on the first direction of scanning in each light path and the second direction of scanning.

Wherein, the light path magnitude of voltage on the first direction of scanning in each light path is the magnitude of voltage that the light signal of the receiving light reception that on the first direction of scanning, each light path is corresponding is corresponding.Light path magnitude of voltage on second direction of scanning in each light path is the magnitude of voltage that the light signal of the receiving light reception that on the second direction of scanning, each light path is corresponding is corresponding.Light path magnitude of voltage on first direction of scanning or the second direction of scanning in each light path is generally a magnitude of voltage in 0-5V interval.

First direction of scanning is be arbitrary scan direction on first direction limit, and the second direction of scanning is the arbitrary scan direction on second direction limit.Such as, the first direction of scanning can be a direction of scanning on the long limit of touch-screen of touch-screen equipment, and the second direction of scanning can be a direction of scanning on the touch-screen minor face of touch-screen equipment, and vice versa.May comprise in the long limit of the touch-screen of touch-screen equipment or the direction of scanning of minor face as shown in Figure 1 or 2 just sweep direction, also may comprise as shown in Figure 3 or Figure 4 tiltedly sweep direction.Preferably, the light path in the first direction of scanning and the second direction of scanning has identical inclination angle.

The device of locating candidate touch point can carry out the scanning of each direction of scanning respectively within a scan period, obtain the light signal strength that receiving light receives on each direction of scanning, the light signal strength then received on each direction of scanning according to receiving light determines the light path magnitude of voltage of the light signal that receiving light receives on each direction of scanning respectively.

It should be noted that, the concrete grammar of the light path magnitude of voltage of the light signal that the device of locating candidate touch point receives on this direction of scanning according to the light signal strength determination receiving light that receiving light receives on a direction of scanning can with reference in prior art, the light signal strength received on a direction of scanning according to receiving light determines the correlation technique of the light path magnitude of voltage of the light signal that this receiving light receives on this direction of scanning, and the embodiment of the present invention repeats no more here.

The device of S102, locating candidate touch point is the light path magnitude of voltage assignment of each scan blind spot on the light path magnitude of voltage of each scan blind spot on the first direction of scanning and the second direction of scanning.

Wherein, on the light path magnitude of voltage of first each scan blind spot on direction of scanning and the second direction of scanning, the light path magnitude of voltage of each scan blind spot is all less than the first preset voltage value, first preset voltage value is light path when not being blocked, the light path magnitude of voltage of the light signal that receiving light corresponding to this light path receives.Such as, the light path magnitude of voltage supposing on direction to be scanned in each light path is generally a magnitude of voltage in 0-5V interval, and so the first preset voltage value can be then 5V.

Exemplary, for touch point 1-3 in Fig. 1 to the circumstance of occlusion of each scanning optical path, because light path 1, light path 2, light path 7 and light path 8 are not blocked by any touch point as shown in Figure 1, therefore, as shown in figure 12, the light path magnitude of voltage in light path 1, light path 2, light path 7 and light path 8 is then the first preset voltage value.

It is envisioned that the first preset voltage value can also be filtering environmental light on after the impact of the light signal that receiving light receives, when a light path is not blocked, the light path magnitude of voltage of the light signal that receiving light corresponding to this light path receives.

Exemplary, in a kind of application scenarios of the embodiment of the present invention, the device of locating candidate touch point can adopt pre-configured fixed voltage value to be the light path magnitude of voltage assignment of each scan blind spot on the light path magnitude of voltage of each scan blind spot on the first direction of scanning and the second direction of scanning.

Preferably, in the another kind of application scenarios of the embodiment of the present invention, the device of locating candidate touch point can according to the light path magnitude of voltage on adjacent optical path on the first direction of scanning, it is the light path magnitude of voltage assignment of the scan blind spot on the first direction of scanning between adjacent optical path, and according to the light path magnitude of voltage on adjacent optical path on the second direction of scanning, be the light path magnitude of voltage assignment of the scan blind spot on the second direction of scanning between adjacent optical path.Wherein, be that the concrete grammar of the light path magnitude of voltage assignment of scan blind spot between adjacent optical path can with reference to the follow-up associated description of the embodiment of the present invention according to adjacent optical path, the present embodiment repeats no more here.

Wherein, the scanning optical path that one group of adjacent transmitting, receiving light are formed in the process of transmitting, receiving optical signals is adjacent optical path.For the scanning optical path on the Zheng Sao direction, long limit shown in Fig. 1, as shown in Figure 1, receiving light 1 and emission lamp 1 are one group of transmitting, receiving light (being called for short first group of lamp), and receiving light 2 and emission lamp 2 are one group of transmitting, receiving light (being called for short second group of lamp).The scanning optical path that the scanning optical path that first group of lamp is formed launching, in the process of receiving optical signals is light path 1, second group of lamp as shown in Figure 1 launching, formed in the process of receiving optical signals is light path 2 as shown in Figure 1; Thus, light path 1 and light path 2 are adjacent optical path.

Certainly, a direction of scanning not only comprises one group of adjacent optical path, as shown in Figure 1, light path 2 and light path 3 are also one group of adjacent optical path, and light path 3 and light path 4 are also one group of adjacent optical path, and light path 4 and light path 5 are also one group of adjacent optical path etc.

The device of S103, locating candidate touch point, according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the first direction of scanning and the first direction of scanning, determines the touch area on the first direction of scanning.

In embodiments of the present invention, the device of locating candidate touch point can after for the light path magnitude of voltage assignment of each scan blind spot on the first direction of scanning, the light path on the first direction of scanning is treated as in each scan blind spot on first direction of scanning, according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the first direction of scanning and the first direction of scanning, determine the touch area on the first direction of scanning.

Wherein, in embodiments of the present invention, the touch area of the first direction of scanning is when touch-screen exists touch point, the continuous parallel light path that on the first direction of scanning, touched point is blocked and the region that scan blind spot forms.

In one implementation, the device of locating candidate touch point can adopt default binary-state threshold to contrast the light path magnitude of voltage of each scan blind spot on light path magnitude of voltage on the first direction of scanning in each light path and the first direction of scanning; If the light path magnitude of voltage in a light path is less than default binary-state threshold, then can determine that this light path is a part (being called for short candidate's light path) for the touch area on the first direction of scanning; If the light path magnitude of voltage of one scan blind area is less than default binary-state threshold, then can determine that this scan blind spot is a part (being called for short candidate blind area) for the touch area on the first direction of scanning; Then the touch area on the first direction of scanning is determined according to candidate's light path of continuous adjacent and candidate blind area.

In another kind of implementation, the device of locating candidate touch point can according to the size of the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the first direction of scanning and the first direction of scanning, and first the light path magnitude of voltage of each scan blind spot on light path magnitude of voltage in each light path on direction of scanning and the first direction of scanning according to the distribution situation of the arrangement of receiving light corresponding to each light path on the first direction of scanning, determine the touch area on the first direction of scanning.

The device of S104, locating candidate touch point, according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the second direction of scanning and the second direction of scanning, determines the touch area on the second direction of scanning.

It should be noted that, the device of locating candidate touch point is according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the second direction of scanning and the second direction of scanning, determine that the method for the touch area on the second direction of scanning and the device of locating candidate touch point are according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the first direction of scanning and the first direction of scanning, determine that the method for the touch area on the first direction of scanning is similar, the embodiment of the present invention repeats no more here.

The device of S105, locating candidate touch point calculates the common factor of the touch area on the first direction of scanning and the touch area on the second direction of scanning, obtains candidate touch point.

Exemplary, as shown in Figure 6, suppose that the first direction of scanning is the direction of scanning on the long limit of touch-screen, the first direction of scanning comprises two touch areas (touch area a and touch area b); Second direction of scanning is the direction of scanning on touch-screen minor face, second direction of scanning comprises three touch areas (touch area c, touch area d and touch area e), the device of locating candidate touch point then can calculate touch area a, touch area b respectively with the common factor of touch area c, touch area d, touch area e, obtain 6 candidate touch points as shown in Figure 7.

It is envisioned that as shown in Figure 7, candidate touch point can be the intersection point of the center line of above-mentioned touch area.The device of locating candidate touch point calculates the common factor of the touch area on the first direction of scanning and the touch area on the second direction of scanning, the concrete grammar obtaining candidate touch point can with reference to correlation technique of the prior art, and the embodiment of the present invention repeats no more here.

The method of the locating candidate touch point that the embodiment of the present invention provides, can within a scan period, obtains the light path magnitude of voltage in each light path on light path magnitude of voltage on the first direction of scanning in each light path and the second direction of scanning; It is the light path magnitude of voltage assignment of each scan blind spot on the light path magnitude of voltage of each scan blind spot on the first direction of scanning and the second direction of scanning; According to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the first direction of scanning and the first direction of scanning, determine the touch area on the first direction of scanning, and according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the second direction of scanning and the second direction of scanning, determine the touch area on the second direction of scanning; Calculate the common factor of the touch area on the first direction of scanning and the touch area on the second direction of scanning, obtain candidate touch point.

Further, in a kind of application scenarios of the embodiment of the present invention, the device of locating candidate touch point can adopt pre-configured fixed voltage value to be the light path magnitude of voltage assignment of each scan blind spot on the light path magnitude of voltage of each scan blind spot on the first direction of scanning and the second direction of scanning.

Concrete, as shown in Figure 8, S102 can replace with S102a:

The light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage of each scan blind spot on the first direction of scanning and the second direction of scanning is set to pre-configured fixed voltage value by the device of S102a, locating candidate touch point.

Wherein, pre-configured fixed voltage value is less than the first preset voltage value.

Preferably, the fixed voltage value (namely pre-configured fixed voltage value) that on the device of the locating candidate touch point light path magnitude of voltage that is each scan blind spot on the first direction of scanning and the second direction of scanning, the light path magnitude of voltage of each scan blind spot is composed all is less than default binary-state threshold.Wherein, default binary-state threshold is less than the first preset voltage value.

It is conceivable that, if the fixed voltage value (namely pre-configured fixed voltage value) that on the light path magnitude of voltage that the device of locating candidate touch point is each scan blind spot on the first direction of scanning and the second direction of scanning, the light path magnitude of voltage of each scan blind spot is composed all is less than default binary-state threshold, even if the light path magnitude of voltage that binary-state threshold contrasts above-mentioned scan blind spot is preset in so follow-up employing, using determine this scan blind spot whether can as touch area time, also can not exist and not block any light path due to the touch point in above-mentioned scan blind spot and cause can not determine out corresponding touch area, thus cause the problem of the omission of touch point.Concrete, because the light path magnitude of voltage of above-mentioned scan blind spot is all less than default binary-state threshold, therefore can determine that this scan blind spot is blocked, thus can determine that the omission of touch point as a part for touch area, thus can not be caused in this scan blind spot.

In the another kind of application scenarios of the embodiment of the present invention, the device of locating candidate touch point can, according to the light path magnitude of voltage on adjacent optical path on one scan direction, be the light path magnitude of voltage assignment of the scan blind spot on this direction of scanning between adjacent optical path.Concrete, as shown in Figure 9, S102 can comprise S102b-S102c:

The device of S102b, locating candidate touch point, according to the light path magnitude of voltage on adjacent optical path on the first direction of scanning, is the light path magnitude of voltage assignment of the scan blind spot on the first direction of scanning between adjacent optical path.

Exemplary, suppose that the second light path and the 3rd light path are a pair adjacent optical path on the first direction of scanning.As shown in Figure 10 or Figure 11, S102b specifically can comprise S102b1-S102b3 or S102b1-S102b3 ':

The device of S102b1, locating candidate touch point judges whether the light path magnitude of voltage of the second light path and the light path magnitude of voltage of the 3rd light path equal the first preset voltage value respectively.

If the light path magnitude of voltage of the light path magnitude of voltage of the second light path and the 3rd light path is equal to the first preset voltage value, then continue to perform S102b2; If the light path magnitude of voltage of the light path magnitude of voltage of the second light path and/or the 3rd light path is less than the first preset voltage value, then continue to perform S102b3 or S102b3 ':

The light path magnitude of voltage of the scan blind spot between the second light path and the 3rd light path is set to the second preset voltage value by the device of S102b2, locating candidate touch point.

Exemplary, as shown in figure 12, because the light path magnitude of voltage of light path 1 (the second light path) and the light path magnitude of voltage of light path 2 (the 3rd light path) are equal to the first preset voltage value, therefore, can determine that as Suo Shi Figure 13 or 14 the light path magnitude of voltage of scan blind spot 1 is the second preset voltage value; Because the light path magnitude of voltage of light path 7 (the second light path) and the light path magnitude of voltage of light path 8 (the 3rd light path) are equal to the first preset voltage value, therefore, can determine that as Suo Shi Figure 13 or 14 the light path magnitude of voltage of scan blind spot 7 is the second preset voltage value.

The light path magnitude of voltage of the scan blind spot between the second light path and the 3rd light path is set to the light path magnitude of voltage of the second light path by the device of S102b3, locating candidate touch point, and the light path magnitude of voltage of the second light path is less than the light path magnitude of voltage of the 3rd light path.

Exemplary, as shown in figure 12, because the light path magnitude of voltage of light path 2 (the second light path) equals the first preset voltage value, and the light path magnitude of voltage of light path 3 (the 3rd light path) is less than the first preset voltage value, therefore, can determine that the light path magnitude of voltage of scan blind spot 2 is the light path magnitude of voltage of light path 3 as shown in figure 13.

As shown in figure 12, because the light path magnitude of voltage of light path 3 (the second light path) and the light path magnitude of voltage of light path 4 (the 3rd light path) are all less than the first preset voltage value, and the light path magnitude of voltage of light path 3 is less than the light path magnitude of voltage of light path 4, therefore, can determine that the light path magnitude of voltage of scan blind spot 3 is the light path magnitude of voltage of light path 3 as shown in figure 13.

As shown in figure 12, because the light path magnitude of voltage of light path 4 (the second light path) and the light path magnitude of voltage of light path 5 (the 3rd light path) are all less than the first preset voltage value, and the light path magnitude of voltage of light path 5 is less than the light path magnitude of voltage of light path 4, therefore, can determine that the light path magnitude of voltage of scan blind spot 4 is the light path magnitude of voltage of light path 5 as shown in figure 13.

As shown in figure 12, because the light path magnitude of voltage of light path 5 (the second light path) and the light path magnitude of voltage of light path 6 (the 3rd light path) are all less than the first preset voltage value, and the light path magnitude of voltage of light path 5 is less than the light path magnitude of voltage of light path 6, therefore, can determine that the light path magnitude of voltage of scan blind spot 5 is the light path magnitude of voltage of light path 5 as shown in figure 13.

As shown in figure 12, because the light path magnitude of voltage of light path 6 (the second light path) is less than the first preset voltage value, the light path magnitude of voltage of light path 7 (the 3rd light path) equals the first preset voltage value, therefore, can determine that the light path magnitude of voltage of scan blind spot 6 is the light path magnitude of voltage of light path 6 as shown in figure 13.

The light path magnitude of voltage of the scan blind spot between the second light path and the 3rd light path is set to the mean value of the light path magnitude of voltage of the second light path and the light path magnitude of voltage of the 3rd light path by the device of S102b3 ', locating candidate touch point.

Exemplary, as shown in figure 12, because the light path magnitude of voltage of light path 2 (the second light path) equals the first preset voltage value, and the light path magnitude of voltage of light path 3 (the 3rd light path) is less than the first preset voltage value, therefore, can determine that the light path magnitude of voltage of scan blind spot 2 is the mean value of the light path magnitude of voltage of light path 2 and the light path magnitude of voltage of light path 3 as shown in figure 14.

As shown in figure 12, because the light path magnitude of voltage of light path 3 (the second light path) and the light path magnitude of voltage of light path 4 (the 3rd light path) are all less than the first preset voltage value, therefore, can determine that the light path magnitude of voltage of scan blind spot 3 is the mean value of the light path magnitude of voltage of light path 3 and the light path magnitude of voltage of light path 4 as shown in figure 14.

As shown in figure 12, because the light path magnitude of voltage of light path 4 (the second light path) and the light path magnitude of voltage of light path 5 (the 3rd light path) are all less than the first preset voltage value, therefore, can determine that the light path magnitude of voltage of scan blind spot 4 is the mean value of the light path magnitude of voltage of light path 4 and the light path magnitude of voltage of light path 5 as shown in figure 14.

As shown in figure 12, because the light path magnitude of voltage of light path 5 (the second light path) and the light path magnitude of voltage of light path 6 (the 3rd light path) are all less than the first preset voltage value, therefore, can determine that the light path magnitude of voltage of scan blind spot 5 is the mean value of the light path magnitude of voltage of light path 5 and the light path magnitude of voltage of light path 6 as shown in figure 14.

As shown in figure 12, because the light path magnitude of voltage of light path 6 (the second light path) is less than the first preset voltage value, the light path magnitude of voltage of light path 7 (the 3rd light path) equals the first preset voltage value, therefore, as shown in figure 14, can determine that the light path magnitude of voltage of scan blind spot 6 is the mean value of the light path magnitude of voltage of light path 6 and the light path magnitude of voltage of light path 7.

The device of S102c, locating candidate touch point, according to the light path magnitude of voltage on adjacent optical path on the second direction of scanning, is the light path magnitude of voltage assignment of the scan blind spot on the second direction of scanning between adjacent optical path.

It should be noted that, the device of locating candidate touch point is according to the light path magnitude of voltage on adjacent optical path on the second direction of scanning, be that the device of locating candidate touch point in the method for the light path magnitude of voltage assignment of the scan blind spot on the second direction of scanning between adjacent optical path and S102b is according to the light path magnitude of voltage on adjacent optical path on the first direction of scanning, the light path magnitude of voltage assignment being the scan blind spot on the first direction of scanning between adjacent optical path is similar, and the embodiment of the present invention repeats no more here.

Further, in one implementation, the device of locating candidate touch point can by judging whether the light path magnitude of voltage of each scan blind spot on light path magnitude of voltage on the first direction of scanning in each light path and the first direction of scanning is less than default binary-state threshold, to determine on this first direction of scanning in each light path and on the first direction of scanning, whether each scan blind spot is blocked, namely to determine on this first direction of scanning in each light path and on the first direction of scanning, whether each scan blind spot can form a part for touch area.

Concrete, as shown in figure 15, S103 specifically can comprise S103a-S103b:

The device of S103a, locating candidate touch point adopts presets the light path magnitude of voltage that binary-state threshold contrasts each scan blind spot on light path magnitude of voltage on the first direction of scanning in each light path and the first direction of scanning.

Exemplary, for the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the first direction of scanning shown in Figure 13 and the first direction of scanning.The device of locating candidate touch point can adopt default binary-state threshold as shown in figure 16 to contrast the light path magnitude of voltage of light path magnitude of voltage in each light path and each scan blind spot.

If the light path magnitude of voltage in S103b first light path is less than default binary-state threshold, and/or the light path magnitude of voltage of the first blind area is less than default binary-state threshold, and the device of locating candidate touch point then determines the touch area on described first direction of scanning.

Wherein, the first light path is arbitrary light path on the first direction of scanning, and the first blind area is take up an official post one scan blind area in the first direction of scanning.

As shown in figure 16, because the light path magnitude of voltage of scan blind spot 1 (the first blind area) is less than default binary-state threshold, the light path magnitude of voltage of scan blind spot 2 (the first blind area) is less than default binary-state threshold, the light path magnitude of voltage of light path 3 (the first light path) is less than default binary-state threshold, the light path magnitude of voltage of scan blind spot 3 (the first blind area) is less than default binary-state threshold, the light path magnitude of voltage of scan blind spot 4 (the first blind area) is less than default binary-state threshold, the light path magnitude of voltage of light path 5 (the first light path) is less than default binary-state threshold, the light path magnitude of voltage of scan blind spot 5 (the first blind area) is less than default binary-state threshold, the light path magnitude of voltage of scan blind spot 7 (the first blind area) is less than default binary-state threshold, and, scan blind spot 2 (the first blind area), light path 3 (the first light path) and scan blind spot 3 (the first blind area) are continuous, scan blind spot 4 (the first blind area), light path 5 (the first light path) and scan blind spot 5 (the first blind area) are continuous, therefore can determine four touch areas this direction of scanning (the first direction of scanning) comprised as shown in figure 17: touch area 1, touch area 2, touch area 3 and touch area 4.

Preferably, in the implementation that another kind is possible, as shown in figure 18, S103 specifically can replace with S103c:

The device of S103c, locating candidate touch point is according to the size of the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the first direction of scanning and the first direction of scanning, and first the light path magnitude of voltage of each scan blind spot on light path magnitude of voltage in each light path on direction of scanning and the first direction of scanning according to the distribution situation of the arrangement of receiving light corresponding to each light path on the first direction of scanning, determine the touch area on the first direction of scanning.

On the one hand, in S103c, the device of locating candidate touch point determines that the method for the touch area on the first direction of scanning can comprise: the size of the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage on device first direction of scanning of locating candidate touch point in each light path and the first direction of scanning, generate the histogram of the light path magnitude of voltage of each scan blind spot on light path magnitude of voltage on the first direction of scanning in each light path and the first direction of scanning, then according to the histogram generated, the touch area on the first direction of scanning is determined.

Exemplary, the device being depicted as locating candidate touch point as Figure 13 or 14, according to the light path magnitude of voltage of the light path magnitude of voltage in each light path on the first direction of scanning and scan blind spot, generates the histogram of the light path magnitude of voltage of light path magnitude of voltage in each light path and scan blind spot.

The device of locating candidate touch point can determine 3 touch areas from the histogram of the light path magnitude of voltage shown in Figure 13, comprises as shown in figure 19, the touch area 5 be made up of scan blind spot 1; The touch area 6 be made up of scan blind spot 2, light path 3, scan blind spot 3, light path 4, scan blind spot 4, light path 5, scan blind spot 5, light path 6 and scan blind spot 6; The touch area 7 be made up of scan blind spot 7.

The device of locating candidate touch point can determine 3 touch areas from the histogram of the light path magnitude of voltage shown in Figure 14, comprises as shown in figure 20, the touch area 8 be made up of scan blind spot 1; The touch area 9 be made up of scan blind spot 2, light path 3, scan blind spot 3, light path 4, scan blind spot 4, light path 5, scan blind spot 5, light path 6 and scan blind spot 6; The touch area 10 be made up of scan blind spot 7.

On the other hand, in S103c, the device of locating candidate touch point determines that the method for the touch area on the first direction of scanning can comprise: the size of the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage on device first direction of scanning of locating candidate touch point in each light path and the first direction of scanning, generate the point-like fluctuation broken line graph of the light path magnitude of voltage of each scan blind spot on light path magnitude of voltage on the first direction of scanning in each light path and the first direction of scanning, then according to the point-like fluctuation broken line graph generated, the touch area on the first direction of scanning is determined.

Exemplary, as shown in figure 21, for the device of locating candidate touch point is according to the light path magnitude of voltage of the light path magnitude of voltage in each light path on the first direction of scanning and scan blind spot, generate the point-like fluctuation broken line graph of the light path magnitude of voltage of light path magnitude of voltage in each light path and scan blind spot.

The device of locating candidate touch point can determine 3 touch areas from the point-like fluctuation broken line graph of the light path magnitude of voltage shown in Figure 21, comprises as shown in figure 20, the touch area 8 be made up of scan blind spot 1; The touch area 9 be made up of scan blind spot 2, light path 3, scan blind spot 3, light path 4, scan blind spot 4, light path 5, scan blind spot 5, light path 6 and scan blind spot 6; The touch area 10 be made up of scan blind spot 7.

Further, in order to avoid such as shown in Figure 19 or Figure 20, touch area corresponding for the multiple touch points shown in Fig. 1 is mixed into a touch area, affects the positioning precision of touch point, the method for the embodiment of the present invention can also comprise S106:

If the light path magnitude of voltage of S106 the 4th light path is greater than the light path magnitude of voltage of the second blind area and the light path magnitude of voltage of the 4th light path is greater than the light path magnitude of voltage of the 3rd blind area, then with the 4th light path for boundary, the scan blind spot of the 4th light path left and right sides and light path are divided to two touch areas respectively.

Wherein, the 4th light path is arbitrary article of light path on the first direction of scanning, and the second blind area and the 3rd blind area are two scan blind spot adjacent with the 4th light path on the first direction of scanning.

Exemplary, as shown in figure 13, light path magnitude of voltage due to light path 2 (the 4th light path) is greater than the light path magnitude of voltage of scan blind spot 1 (the second blind area) and the light path magnitude of voltage of light path 2 (the 4th light path) is greater than the light path magnitude of voltage of scan blind spot 2 (the 3rd blind area), therefore, the device of locating candidate touch point then with light path 2 (the 4th light path) for boundary, the scan blind spot of light path 2 (the 4th light path) left and right sides and light path are divided to two touch areas respectively.Namely as shown in figure 22, light path 2 (the 4th light path) left and right sides is divided into two touch areas: touch area 5 and touch area 6 (comprising touch area a and touch area b).

Exemplary, as shown in figure 13, light path magnitude of voltage due to light path 4 (the 4th light path) is greater than the light path magnitude of voltage of scan blind spot 3 (the second blind area) and the light path magnitude of voltage of light path 4 (the 4th light path) is greater than the light path magnitude of voltage of scan blind spot 4 (the 3rd blind area), therefore, the device of locating candidate touch point then with the center line of light path 4 (the 4th light path) for boundary, the scan blind spot of light path 4 (the 4th light path) left and right sides and light path are divided to two touch areas respectively.Namely as shown in figure 22, with the center line of light path 4 (the 4th light path) for boundary, two touch areas will can be divided in touch area 6 as shown in fig. 13 that: touch area a and touch area b.

Exemplary, as shown in figure 13, light path magnitude of voltage due to light path 7 (the 4th light path) is greater than the light path magnitude of voltage of scan blind spot 6 (the second blind area) and the light path magnitude of voltage of light path 7 (the 4th light path) is greater than the light path magnitude of voltage of scan blind spot 7 (the 3rd blind area), therefore, the device of locating candidate touch point then with light path 7 (the 4th light path) for boundary, the scan blind spot of light path 7 (the 4th light path) left and right sides and light path are divided to two touch areas respectively.Namely as shown in figure 22, light path 7 (the 4th light path) left and right sides is divided into two touch areas: touch area 6 (comprising touch area a and touch area b) and touch area 7.

Exemplary, as shown in figure 14, due to light path 4, (the light path magnitude of voltage of the 4th light path is greater than the light path magnitude of voltage of scan blind spot 3 (the second blind area), and the light path magnitude of voltage of light path 4 (the 4th light path) is greater than the light path magnitude of voltage of scan blind spot 4 (the 3rd blind area), the light path magnitude of voltage of light path 6 (the 4th light path) is greater than the light path magnitude of voltage of scan blind spot 5 (the second blind area), and the light path magnitude of voltage of light path 6 (the 4th light path) is greater than the light path magnitude of voltage of scan blind spot 6 (the 3rd blind area), therefore, the device of locating candidate touch point then can respectively with the center line of the center line of light path 4 (the 4th light path) and light path 6 (the 4th light path) for boundary, as shown in figure 23, touch area 9 is as shown in figure 14 divided into three touch areas: touch area c, touch area d and touch area e.

It is conceivable that, with the 4th light path (light path magnitude of voltage is greater than the light path of the scan blind spot be adjacent) for boundary, the scan blind spot of the 4th light path left and right sides and light path are divided to two touch areas respectively, more accurate touch area can be divided, thus touch point positioning precision can be improved.

Further, in order to can clearly, the trickle situation of change embodying the light path magnitude of voltage of each light path and scan blind spot, as shown in figure 24, before S103 and S104, the method for the embodiment of the present invention can also comprise S107:

The device of S107, locating candidate touch point, by the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the first direction of scanning, the first direction of scanning, the second direction of scanning and the second direction of scanning, is mapped as analog voltage respectively.

Wherein, the span of the light path magnitude of voltage in each light path and the light path magnitude of voltage of scan blind spot is 0-5V, and the span of analog voltage is 0-255.

Accordingly, S103 can replace with S103 ', and S104 can replace with S104 ':

The device of S103 ', locating candidate touch point, according to the analog voltage of each light path and each scan blind spot on the first direction of scanning, determines the touch area on the first direction of scanning.

The device of S104 ', locating candidate touch point, according to the analog voltage of each light path and each scan blind spot on the second direction of scanning, determines the touch area on the second direction of scanning.

It is envisioned that compared to the light path magnitude of voltage of span at 0-5V, span at the light path magnitude of voltage of 0-255, can clearly, the trickle situation of change embodying the light path magnitude of voltage of each light path and scan blind spot.

It should be noted that, the device of locating candidate touch point is according to the analog voltage of each light path on a direction of scanning with each scan blind spot, determine that touch area on this direction of scanning and the above-mentioned light path magnitude of voltage according to the light path magnitude of voltage in each light path on this direction of scanning and scan blind spot determine that the method for the touch area on this direction of scanning is similar, the embodiment of the present invention repeats here.

Embodiment two

The embodiment of the present invention provides a kind of device of locating candidate touch point, is contained in touch-screen equipment, and as shown in figure 25, the device of this locating candidate touch point comprises: acquisition module 21, assignment module 22, determination module 23 and computing module 24.

Acquisition module 21, for within a scan period, obtain the light path magnitude of voltage in each light path on light path magnitude of voltage on the first direction of scanning in each light path and the second direction of scanning, the light path magnitude of voltage in each light path described is the magnitude of voltage that light signal that receiving light corresponding to each light path described receives is corresponding.

Assignment module 22, for the light path magnitude of voltage assignment of each scan blind spot on the light path magnitude of voltage of each scan blind spot on described first direction of scanning and described second direction of scanning, on described first direction of scanning, on the light path magnitude of voltage of each scan blind spot and described second direction of scanning, the light path magnitude of voltage of each scan blind spot is all less than the first preset voltage value, described first preset voltage value is light path when not being blocked, the light path magnitude of voltage of the light signal that receiving light corresponding to this light path receives.

Determination module 23, for the light path magnitude of voltage according to each scan blind spot on the light path magnitude of voltage in each light path on described first direction of scanning and described first direction of scanning, determine the touch area on described first direction of scanning, and according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on described second direction of scanning and described second direction of scanning, determine the touch area on described second direction of scanning.

Computing module 24, for calculating the common factor of the touch area on described first direction of scanning and the touch area on described second direction of scanning, obtains candidate touch point.

Further, on described first direction of scanning, on the light path magnitude of voltage of each scan blind spot and described second direction of scanning, the light path magnitude of voltage of each scan blind spot is all less than default binary-state threshold.

Wherein, described default binary-state threshold is less than described first preset voltage value.

Further, described assignment module 22, specifically for:

According to the light path magnitude of voltage on adjacent optical path on described first direction of scanning, it is the light path magnitude of voltage assignment of the scan blind spot on described first direction of scanning between adjacent optical path;

According to the light path magnitude of voltage on adjacent optical path on described second direction of scanning, it is the light path magnitude of voltage assignment of the scan blind spot on described second direction of scanning between adjacent optical path.

Further, described determination module 23, specifically for:

Adopt the light path magnitude of voltage presetting each scan blind spot on light path magnitude of voltage on described first direction of scanning of binary-state threshold contrast in each light path and described first direction of scanning;

If the light path magnitude of voltage in the first light path is less than described default binary-state threshold, and/or the light path magnitude of voltage of described first blind area is less than described default binary-state threshold, then determine the touch area on described first direction of scanning of described first blind area composition.

Wherein, described first light path is arbitrary light path on described first direction of scanning, and described first blind area is take up an official post one scan blind area in described first direction of scanning.

Further, described determination module 23, specifically for:

According to the size of the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on described first direction of scanning and described first direction of scanning, and the light path magnitude of voltage of each scan blind spot, according to the distribution situation of the arrangement of receiving light corresponding to each light path on described first direction of scanning, determines the touch area on described first direction of scanning on light path magnitude of voltage on described first direction of scanning in each light path and described first direction of scanning.

Further, on described first direction of scanning, adjacent optical path comprises: the second light path and the 3rd light path.

Described assignment module 22, specifically for:

If the light path magnitude of voltage of the light path magnitude of voltage of described second light path and/or described 3rd light path is less than described first preset voltage value, then the light path magnitude of voltage of the scan blind spot between described second light path and described 3rd light path is set to the light path magnitude of voltage of described second light path, the light path magnitude of voltage of described second light path is less than the light path magnitude of voltage of described 3rd light path;

Or, if the light path magnitude of voltage of the light path magnitude of voltage of described second light path and/or described 3rd light path is less than described first preset voltage value, then the light path magnitude of voltage of the scan blind spot between described second light path and described 3rd light path is set to the mean value of the light path magnitude of voltage of described second light path and the light path magnitude of voltage of described 3rd light path;

Or, if the light path magnitude of voltage of the light path magnitude of voltage of described second light path and described 3rd light path is equal to described first preset voltage value, then the light path magnitude of voltage of the scan blind spot between described second light path and described 3rd light path is set to the second preset voltage value.

Wherein, described second preset voltage value is light path when being blocked completely, the light path magnitude of voltage of the light signal that receiving light corresponding to this light path receives.

Further, as shown in figure 26, the device of this locating candidate touch point, can also comprise: simulated module 25.

Simulated module 25, before determining the touch area on described first direction of scanning at described determination module 23, by the light path magnitude of voltage in each light path on described first direction of scanning, the light path magnitude of voltage of each scan blind spot on described first direction of scanning, the light path magnitude of voltage of each scan blind spot on light path magnitude of voltage on described second direction of scanning in each light path and described second direction of scanning, be mapped as analog voltage respectively, wherein, the span of the light path magnitude of voltage in each light path described and the light path magnitude of voltage of described scan blind spot is 0-5V, the span of described analog voltage is 0-255.

Described determination module 23, specifically for the analog voltage according to each light path on described first direction of scanning and each scan blind spot, determines the touch area on described first direction of scanning.

Further, described determination module 23, if the light path magnitude of voltage specifically for the 4th light path is greater than the light path magnitude of voltage of the second blind area and the light path magnitude of voltage of described 4th light path is greater than the light path magnitude of voltage of the 3rd blind area, then with described 4th light path for boundary, the scan blind spot of the described 4th light path left and right sides and light path are divided to two touch areas respectively.

Wherein, described 4th light path is arbitrary article of light path on described first direction of scanning, and described second blind area and described 3rd blind area are two scan blind spot adjacent with described 4th light path on the first direction of scanning.

It should be noted that, in the device of the locating candidate touch point that the embodiment of the present invention provides, the specific descriptions of part functional module can with reference to the corresponding content in the inventive method embodiment, and the present embodiment is no longer described in detail here.

The embodiment of the present invention provides a kind of touch-screen equipment, as shown in figure 27, comprising: storer 32 and processor 32.

Storer 31, for storing one group of executable program code;

Processor 32, for the one group of executable program code stored according to described storer 31, performs the method for locating candidate touch point cited in the embodiment of the present invention one.

It should be noted that, in the touch-screen equipment that the embodiment of the present invention provides, the specific descriptions of part functional module can with reference to the corresponding content in the inventive method embodiment, and the present embodiment is no longer described in detail here.

The device of the locating candidate touch point that the embodiment of the present invention provides and touch-screen equipment, can within a scan period, obtains the light path magnitude of voltage in each light path on light path magnitude of voltage on the first direction of scanning in each light path and the second direction of scanning; It is the light path magnitude of voltage assignment of each scan blind spot on the light path magnitude of voltage of each scan blind spot on the first direction of scanning and the second direction of scanning; According to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the first direction of scanning and the first direction of scanning, determine the touch area on the first direction of scanning, and according to the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the second direction of scanning and the second direction of scanning, determine the touch area on the second direction of scanning; Calculate the common factor of the touch area on the first direction of scanning and the touch area on the second direction of scanning, obtain candidate touch point.

In sum, by this programme, when can solve prior art scanning touch point, the problem of the omission of touch point may be there is, the possibility of the omission of touch point can be reduced, and can more accurate touch area be divided, thus improve touch point positioning precision.

Through the above description of the embodiments, those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, the inner structure by device is divided into different functional modules, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.

In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.

The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in embodiments of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.

If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform all or part of step of method described in the embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.

Claims

1. a method for locating candidate touch point, is characterized in that, is applied to touch-screen equipment, and described method comprises:

2. method according to claim 1, is characterized in that, on described first direction of scanning, on the light path magnitude of voltage of each scan blind spot and described second direction of scanning, the light path magnitude of voltage of each scan blind spot is all less than default binary-state threshold;

3. method according to claim 1, is characterized in that, described is the light path magnitude of voltage assignment of each scan blind spot on the light path magnitude of voltage of each scan blind spot on described first direction of scanning and described second direction of scanning, comprising:

4. the method according to any one of claim 1-3, it is characterized in that, the described light path magnitude of voltage according to each scan blind spot on the light path magnitude of voltage in each light path on described first direction of scanning and described first direction of scanning, determine the touch area on described first direction of scanning, comprising:

If the light path magnitude of voltage in the first light path is less than described default binary-state threshold, and/or the light path magnitude of voltage of described first blind area is less than described default binary-state threshold, then determine the touch area on described first direction of scanning;

5. the method according to any one of claim 1-3, it is characterized in that, the described light path magnitude of voltage according to each scan blind spot on the light path magnitude of voltage in each light path on described first direction of scanning and described first direction of scanning, determine the touch area on described first direction of scanning, comprising:

6. method according to claim 3, is characterized in that, on described first direction of scanning, adjacent optical path comprises: the second light path and the 3rd light path;

Described according to the light path magnitude of voltage on adjacent optical path on described first direction of scanning, be the light path magnitude of voltage assignment of the scan blind spot on described first direction of scanning between adjacent optical path, comprise:

Or,

If the light path magnitude of voltage of the light path magnitude of voltage of described second light path and/or described 3rd light path is less than described first preset voltage value, then the light path magnitude of voltage of the scan blind spot between described second light path and described 3rd light path is set to the mean value of the light path magnitude of voltage of described second light path and the light path magnitude of voltage of described 3rd light path;

Or,

If the light path magnitude of voltage of the light path magnitude of voltage of described second light path and described 3rd light path is equal to described first preset voltage value, then the light path magnitude of voltage of the scan blind spot between described second light path and described 3rd light path is set to the second preset voltage value;

7. the method according to claim 1 or 3, it is characterized in that, at the described light path magnitude of voltage according to each scan blind spot on the light path magnitude of voltage in each light path on described first direction of scanning and described first direction of scanning, before determining the touch area on described first direction of scanning, described method also comprises:

By the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on the light path magnitude of voltage of each scan blind spot on the light path magnitude of voltage in each light path on described first direction of scanning, described first direction of scanning, described second direction of scanning and described second direction of scanning, be mapped as analog voltage respectively, wherein, the span of the light path magnitude of voltage in each light path described and the light path magnitude of voltage of described scan blind spot is 0-5V, and the span of described analog voltage is 0-255;

The described light path magnitude of voltage according to each scan blind spot on the light path magnitude of voltage in each light path on described first direction of scanning and described first direction of scanning, determine the touch area on described first direction of scanning, comprising:

According to the analog voltage of each light path on described first direction of scanning with each scan blind spot, determine the touch area on described first direction of scanning.

8. the method according to any one of claim 1-3, it is characterized in that, the described light path magnitude of voltage according to each scan blind spot on the light path magnitude of voltage in each light path on described first direction of scanning and described first direction of scanning, determine the touch area on described first direction of scanning, comprising:

If the light path magnitude of voltage of the 4th light path is greater than the light path magnitude of voltage of the second blind area and the light path magnitude of voltage of described 4th light path is greater than the light path magnitude of voltage of the 3rd blind area, then with described 4th light path for boundary, the scan blind spot of the described 4th light path left and right sides and light path are divided to two touch areas respectively;

9. a device for locating candidate touch point, is characterized in that, is contained in touch-screen equipment, and described device comprises:

10. device according to claim 9, is characterized in that, on described first direction of scanning, on the light path magnitude of voltage of each scan blind spot and described second direction of scanning, the light path magnitude of voltage of each scan blind spot is all less than default binary-state threshold;

11. devices according to claim 9, is characterized in that, described assignment module, specifically for:

12. devices according to any one of claim 9-11, is characterized in that, described determination module, specifically for:

13. devices according to any one of claim 9-11, is characterized in that, described determination module, specifically for:

14. devices according to claim 11, is characterized in that, on described first direction of scanning, adjacent optical path comprises: the second light path and the 3rd light path;

Described assignment module, specifically for:

Or,

15. devices according to claim 9 or 11, is characterized in that, also comprise:

Simulated module, before determine the touch area on described first direction of scanning at described determination module, by the light path magnitude of voltage in each light path on described first direction of scanning, the light path magnitude of voltage of each scan blind spot on described first direction of scanning, the light path magnitude of voltage of each scan blind spot on light path magnitude of voltage on described second direction of scanning in each light path and described second direction of scanning, be mapped as analog voltage respectively, wherein, the span of the light path magnitude of voltage in each light path described and the light path magnitude of voltage of described scan blind spot is 0-5V, the span of described analog voltage is 0-255,

Described determination module, specifically for:

16. devices according to any one of claim 9-11, is characterized in that, described determination module, specifically for:

17. 1 kinds of touch-screen equipments, is characterized in that, comprising:

Storer, for storing one group of executable program code;

Processor, for performing the executable program code that described storer stores, and specifically performs the method for the locating candidate touch point according to any one of claim 1-8.