CN102289321B - Handheld device and method for processing mistaken touch on touch screen thereof - Google Patents
Handheld device and method for processing mistaken touch on touch screen thereof Download PDFInfo
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- CN102289321B CN102289321B CN201110241844.1A CN201110241844A CN102289321B CN 102289321 B CN102289321 B CN 102289321B CN 201110241844 A CN201110241844 A CN 201110241844A CN 102289321 B CN102289321 B CN 102289321B
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Abstract
The invention discloses a method for processing mistaken touch on a touch screen of a handheld device. The method comprises the following steps of: respectively setting non-operation areas generating no response to touch actions of a user on the first side and the second side, parallel with the length direction of the touch screen, of the touch screen, wherein the non-operation areas have preset widths; defining the area, adjacent to the non-operation areas and covering a preset area, as the mistaken operation area; judging whether the touch action exists on the mistaken operation area; and when the touch action existing on the mistaken operation area is judged, widening a preset distance for the preset width in the mistaken operation area generating the touch action. The invention further discloses a handheld device. Through the above manner, the technical scheme provided by the invention can be used for effectively solving the mistaken input problem caused by the mistaken touch on the lateral areas of the touch screen of the handheld device when the handheld device is grasped by the fingers of a user.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to the mistaken touch processing method of a kind of handheld device and touch-screen thereof.
Background technology
In recent years, touch-screen has been widely used on hand-held mobile communicating terminal and pocket computer, user by carrying out on the touchscreen clicking, the operation such as paddling, the repertoire of common keyboard can be completed, therefore, touch-screen can make man-machine interaction more simple and direct.
Especially, in the such as handheld device such as mobile phone, PDA (Personal Digital Assistant, personal digital assistant), touch-screen is often set as input module, with replace keyboard or with keyboard with the use of.
And touch-screen is very sensitive for the reaction of conductor, thus when staff normally grasps the handheld device being provided with touch-screen, the finger pressure applied in display screen both sides can produce mistaken touch, thus makes touch-screen produce misoperation.
Therefore, need the mistaken touch processing method that a kind of handheld device and touch-screen thereof are provided badly, to eliminate the impact that mistaken touch produces.
Summary of the invention
The technical problem that the present invention mainly solves is to provide the mistaken touch processing method of a kind of handheld device and touch-screen thereof, to solve the problem.
The present invention is the technical scheme that technical solution problem adopts: the mistaken touch processing method providing a kind of touch-screen of handheld device, the method comprises the following steps: the first side that a. is parallel with the length direction of touch-screen on the touchscreen and second side arrange the non-operational region touch action of user not being produced to response respectively, wherein non-operational region has a predetermined width, and defines that NOT-AND operation region is adjacent and to cover the region of a predetermined area be maloperation region; B. judge whether there is touch action on maloperation region; C. determine on maloperation region, there is touch action time, produce touch action maloperation region on widen predetermined width one preset distance.In stepb, gather multiple sampled points that each touch action is corresponding on the touchscreen respectively, to form the sampled point set corresponding with each touch action; In step c, maximum ordinate value in the multiple sampled point of further acquisition and minimum ordinate value, maximum ordinate value is deducted minimum ordinate value, to obtain the second difference, with the second difference for length widens predetermined width one preset distance in the scope that maximum ordinate value and minimum ordinate value limit.
Wherein, in each sampled point set, judge whether include the abscissa value corresponding to first side or the abscissa value corresponding to second side in the abscissa value of multiple sampled point, and determine in the abscissa value of multiple sampled point, to include the abscissa value corresponding to first side or the abscissa value corresponding to second side time, maximum abscissa value in the multiple sampled point of further acquisition and minimum abscissa value, and maximum abscissa value is deducted minimum abscissa value, to obtain the first difference, determining the first difference and be greater than a half of predetermined width, determine and there is touch action on maloperation region.
Wherein, step b comprises further: determining the first difference and be greater than a half of predetermined width, judge whether the duration of touch action is greater than the very first time further, and determine the duration be greater than the very first time time, determine and there is touch action on maloperation region.
The present invention is the another one technical scheme that technical solution problem adopts: provide a kind of handheld device, comprising: touch-screen; Touch screen control module, be connected with touch-screen, first side parallel with the length direction of touch-screen on the touchscreen and second side arrange the non-operational region touch action of user not being produced to response respectively, wherein non-operational region has a predetermined width, and define that NOT-AND operation region is adjacent and to cover the region of a predetermined area be maloperation region, touch screen control module judges whether there is touch action on maloperation region, determine on maloperation region, there is touch action time, widen predetermined width one preset distance.Touch screen control module gathers multiple sampled points corresponding to each touch action on the touchscreen respectively, to form the sampled point set corresponding with each touch action.Touch screen control module obtains maximum ordinate value in multiple sampled point and minimum ordinate value further, maximum ordinate value is deducted minimum ordinate value, to obtain the second difference, with the second difference for length widens predetermined width one preset distance in the scope that maximum ordinate value and minimum ordinate value limit.
Wherein, in each sampled point set, judge whether include the abscissa value corresponding to first side or the abscissa value corresponding to second side in the abscissa value of multiple sampled point, and determine in the abscissa value of multiple sampled point, to include the abscissa value corresponding to first side or the abscissa value corresponding to second side time, maximum abscissa value in the multiple sampled point of further acquisition and minimum abscissa value, and maximum abscissa value is deducted minimum abscissa value, to obtain the first difference, determining the first difference and be greater than a half of predetermined width, determine and there is touch action on maloperation region.
Wherein, touch screen control module is further used for: determining the first difference and be greater than a half of predetermined width, judge whether the duration of touch action is greater than the very first time further, and determine the duration be greater than the very first time time, determine and there is touch action on maloperation region.
The invention has the beneficial effects as follows: be different from prior art, the mistaken touch processing method of handheld device provided by the invention and touch-screen thereof does not produce the non-operational region of response and adjacent with this non-operational region and cover the maloperation region of predetermined area by arranging on the touchscreen to touch action, determine on maloperation region, there is touch action time, the maloperation region producing touch action is widened the predetermined width of non-operational region, can effectively solve user with finger hold handheld device time may produce mistaken touch on the side area of the touch-screen of handheld device, thus cause the problem of erroneous input.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of handheld device according to a first embodiment of the present invention.
Fig. 2 is the front schematic view of handheld device according to a first embodiment of the present invention.
Fig. 3 is the flow chart of the mistaken touch processing method of the touch-screen of handheld device according to a first embodiment of the present invention.
Fig. 4 is handheld device electrical block diagram according to a first embodiment of the present invention.
Fig. 5 is the schematic perspective view of handheld device according to a second embodiment of the present invention.
Fig. 6 is the front schematic view of handheld device according to a second embodiment of the present invention.
Fig. 7 is the flow chart of the mistaken touch processing method of the touch-screen of handheld device according to a second embodiment of the present invention.
Fig. 8 is handheld device electrical block diagram according to a second embodiment of the present invention.
Detailed description of the invention
First refer to Fig. 1, Fig. 1 is the front schematic view of handheld device according to a first embodiment of the present invention.As shown in Figure 1,
Refer to Fig. 2, Fig. 2 is the schematic perspective view of handheld device according to a first embodiment of the present invention.As shown in Figure 2, in the handheld device being provided with touch-screen, often touch-screen is arranged on the top of display screen, and the touch-screen part overlapping with display screen can be set to operating area 1022, user is when operating area is to touch-screen generation touch action, operating area 1022 can respond touch action, as recorded the coordinate points of touch action, to analyze coordinate points by touch-screen control chip, thus process accordingly, and touch-screen and display screen do not have overlapping part can be set to non-operational region 1021, user is in non-operational region during 1021 pairs of touch-screen generation touch action, because non-operational region 1021 is not overlapping with display screen, therefore non-operational region 1021 is set to, to touch action, any response does not occur by touch-screen control chip, to ensure that the touch action on non-operational region 1021 occurs can not produce any process action.
And when user holds this handheld device, finger can contact with the non-operational region 1021 on touch-screen, because non-operational region 1021 is set to, to touch action, any response does not occur, therefore when user holds handheld device, when finger contact is to non-operational region 1021, any process action can not be produced.
But, referring again to Fig. 1, user, when holding handheld device, often can not note the coverage of non-operational region 1021, therefore, for the user that hand-type is larger, the situation often producing " crossing the border " as shown in Figure 1 occurs, in FIG, the thumb of user, middle finger and namelessly to contact with the operating area 1022 of touch-screen, define contact area 10, because this contact area 10 is not set to, to touch action, any response does not occur, therefore can cause erroneous input.
Refer to Fig. 2, Fig. 2 is the front schematic view of handheld device according to a first embodiment of the present invention.As shown in Figure 2, in the present embodiment, handheld device comprises structural member 101 and touch-screen 102, wherein structural member 101 surrounds touch-screen 102, it should be noted that in FIG, do not show structural member 101, because structural member 101 can be set to very narrow, or does not arrange, the display surface of handheld device is made to be only touch-screen 102.
In the present embodiment, touch-screen 102 is provided with three regions, comprises: non-operational region 1021, operating area 1022 and maloperation region 1023, wherein, non-operational region 1021 has a predetermined width L1, and wherein, predetermined width L1 is | X1-X0| or | X3-X2|.NOT-AND operation region, maloperation region 1,023 1021 adjacent and cover a predetermined area, as shown in Figure 1, the length that this predetermined area can be width L2 and first side 11 or second side 12 limited, and its real area can set according to actual needs.Wherein, above-mentioned first side 11 is parallel with the length direction of touch-screen with second side 12.
Touch-screen control chip can be utilized to be set to non-operational region 1021, to touch action, any response does not occur, operating area 1022 and maloperation region 1023 are set to respond touch action, after carrying out above-mentioned setting, the flow process that the handheld device of the present embodiment can be implemented described in Fig. 3 can be made.
Refer to Fig. 3, Fig. 3 is the flow chart of the mistaken touch processing method of the touch-screen of handheld device according to a first embodiment of the present invention.As shown in Figure 3, in the present embodiment, the mistaken touch processing method of the touch-screen of handheld device comprises the following steps:
Step 101, first side 11 parallel with the length direction of touch-screen on the touchscreen and second side 12 arrange the non-operational region 1021 touch action of user not being produced to response respectively, wherein non-operational region 1021 has a predetermined width L1, and defines that NOT-AND operation region 1021 is adjacent and to cover the region of a predetermined area be maloperation region 1023.
Step 102, gathers multiple sampled points that each touch action is corresponding on the touchscreen respectively, to form the sampled point set corresponding with each touch action.Wherein, the reason arranging the sampled point set corresponding to each touch action is: when user holds touch-screen, likely touch maloperation region 1021 in first side 11 and both sides, second side 12 simultaneously, namely produce in both sides respectively and be no less than a touch action, if now unification is carried out following coordinate value to the sampled point of the multiple touch action collected and is compared, the comparative result that then can make the mistake, therefore, in this, sampled point set is set, make each sampled point set each touch action corresponding, following coordinate value analysis is also only defined in the multiple sampled points in a sampled point set, thus prevent the situation of process by mistake from occurring.
Step 103, in each sampled point set, judge whether include the abscissa value X0 corresponding to the first side 11 or abscissa value X3 corresponding to second side 12 in the abscissa value of multiple sampled point, when judged result is "Yes", perform step 104, when judged result is "No", perform step 110.Wherein, the reason of making this judgement is: if include the abscissa value X0 corresponding to the first side 11 or abscissa value X3 corresponding to second side 12 in the abscissa value of multiple sampled point, then the finger of known user has touched handheld device, and user is carrying out the action holding handheld device.If do not include the abscissa value X0 corresponding to the first side 11 or abscissa value X3 corresponding to second side 12 in the abscissa value of multiple sampled point, then the finger of known user does not hold handheld device.
Step 104, obtains the maximum abscissa value in multiple sampled point and minimum abscissa value, and maximum abscissa value is deducted minimum abscissa value, to obtain the first difference.Wherein, this first difference be user finger touch touch-screen time, touch area is in the scope of the width of touch-screen.
Step 105, judges whether the first difference is greater than the half of predetermined width L1, when judged result is "Yes", performs step 106, when judged result is "No", performs step 110.Wherein, the reason of making this determining step is: owing to having got the scope (i.e. first difference) of touch area at the width of touch-screen in step 104, therefore, to judge that the scope of touch area at the width of touch-screen is made comparisons with the half of the predetermined width L1 exceeding non-operational region 1021, determining touch area at the scope of the width of touch-screen and the half of predetermined width L1 exceeding non-operational region 1021, think that the situation that there is touch action on maloperation region 1023 likely occurs, thus continue to perform step 106, determining the scope of touch area at the width of touch-screen and do not exceeding a half of the predetermined width L1 of non-operational region 1021, then directly can judge that the situation that there is touch action on maloperation region 1023 can not occur, thus perform step 110, directly exit flow process.
Step 106, judges whether the duration of touch action is greater than the very first time.Wherein, for the touch action that user holds touch-screen (as making a phone call), often need to continue for some time, therefore, a time determining step is more set in this, and the preferred value of this very first time can be set to 2 seconds.Wherein this step can be arranged according to actual needs, also can omit where necessary.
Step 107, determines and there is touch action on maloperation region 1023.Wherein, this touch action is mistaken touch.
Step 108, obtains the maximum ordinate value in multiple sampled point and minimum ordinate value, maximum ordinate value is deducted minimum ordinate value, to obtain the second difference.Wherein, this second difference be user finger touch touch-screen time, touch area is in the scope of the length direction of touch-screen.
Step 109, with the second difference for length widens predetermined width L1 mono-preset distance in the scope that maximum ordinate value and minimum ordinate value limit.Wherein, the reason of widening predetermined width L1 in the scope that maximum ordinate value and minimum ordinate value limit is the generation position of locating touch action by maximum ordinate value and minimum ordinate value, only widens the region that touch action occurs.And, above-mentioned preset distance can be arranged according to actual needs, specifically, can arrange according to the sales region of handheld device, as, for the situation that occidentals's hand-type is larger, this preset distance that can arrange the handheld device of this sales region is higher value, for the situation that Southeast Asian's hand-type is less, this preset distance that can arrange the handheld device of this sales region is smaller value.Owing to broadening the predetermined width L1 of non-operational region 1021, therefore, even if finger contact has been arrived maloperation region 1023 by user because of carelessness, this maloperation region 1023 can by non-operational region 1021 the preset distance widened and the second difference the area that limits cover, thus make finger contact to the region in maloperation region 1023 any response is not occurred to this touch action, thus can not erroneous input be produced.
Step 110, exits flow process.
Refer to Fig. 4, Fig. 4 is handheld device electrical block diagram according to a first embodiment of the present invention.As shown in Figure 4, in the present embodiment, handheld device comprises touch-screen 201 and touch screen control module 202, and the two is interconnected, and wherein, touch action produces on touch-screen 201, and touch screen control module 202 can complete step 101 described in Fig. 3 to step 110.
In the present embodiment, non-operational region 1021, operating area 1022 and maloperation region 1023 is set to by touch-screen 201 by touch screen control module 202, and adopt respective algorithms to analyze the coordinate value of touch action, dynamically to widen non-operational region 1021, thus shielding the touch action occurred in maloperation region 1023 pointedly, the situation that effectively can reduce erroneous input occurs.
Below will introduce the second embodiment of the present invention in detail see Fig. 5 to Fig. 7.
Refer to Fig. 5, Fig. 5 is the schematic perspective view of handheld device according to a second embodiment of the present invention.As shown in Figure 5, in the present embodiment, for mistaken touch region, on the correspondence position of first side 11, the maloperation region in left side can be divided into maloperation region 201, maloperation region 202 and maloperation region 203, maloperation region 204, maloperation region 205 and maloperation region 206 are divided in the maloperation region on right side by the correspondence position of second side 12.And, in the handheld device Proximity Sensor (not shown) is set respectively on the position in maloperation region 201, maloperation region 202, maloperation region 203, maloperation region 204, maloperation region 205 and maloperation region 206, whether there is touch action to detect in above-mentioned maloperation region.
It should be noted that the quantity in above-mentioned maloperation region can be arranged arbitrarily as required, the present invention does not do concrete restriction to this.
Refer to Fig. 6, Fig. 6 is the front schematic view of handheld device according to a second embodiment of the present invention.Wherein substantially identical shown in Fig. 6 and Fig. 2, its difference is, has shown the distributing position in maloperation region 201, maloperation region 202, maloperation region 203, maloperation region 204, maloperation region 205 and maloperation region 206 in Fig. 6.
Refer to Fig. 7, Fig. 7 is the flow chart of the mistaken touch processing method of the touch-screen of handheld device according to a second embodiment of the present invention.As shown in Figure 7, in the present embodiment, the mistaken touch processing method of the touch-screen of handheld device comprises the following steps:
Step 301, first side 11 parallel with the length direction of touch-screen on the touchscreen and second side 12 arrange the non-operational region 1021 touch action of user not being produced to response respectively, wherein non-operational region 1021 has a predetermined width L1, and defines that NOT-AND operation region is adjacent and to cover the region of a predetermined area be maloperation region.As in the first embodiment, the length that this predetermined area can be width L2 and first side 11 or second side 12 limited, and its real area can set according to actual needs.
Step 302, utilizes the multiple Proximity Sensors corresponding respectively with mistaken touch region 201,202,203,204,205,206 arranged respectively on the correspondence position of first side 11 and second side 12 to detect corresponding mistaken touch region respectively.
Step 303, judges whether corresponding mistaken touch region exists touch action.When judged result is "Yes", perform step 304, when judged result is "No", perform step 307.
Step 304, judges whether the duration of touch action is greater than the very first time.When judged result is "Yes", perform step 305, when judged result is "No", perform step 307.Wherein this step can be arranged according to actual needs, also can omit where necessary.
Step 305, determines and there is touch action on maloperation region.Wherein, this touch action is mistaken touch.
Step 306, with one of three equal parts of the length of any one in first side 11 and second side 12 for length predetermined width L1 mono-preset distance is widened in the mistaken touch region that the Proximity Sensor of touch action is corresponding detecting.Wherein, with regard to the present embodiment, detect that mistaken touch region that the Proximity Sensor of touch action is corresponding can be one in the 201-206 of mistaken touch region, analogy, if the mistaken touch region that the Proximity Sensor measuring touch action is corresponding is mistaken touch region 201, then can widen predetermined width L1 mono-preset distance for length in mistaken touch region 201 with one of three equal parts of the length of any one in first side 11 and second side 12, thus make finger contact to maloperation region 201 any response is not occurred to this touch action, thus can not erroneous input be produced.Identical with the first embodiment, owing to broadening the predetermined width L1 of non-operational region 1021, therefore, even if finger contact has been arrived one in the 201-206 of maloperation region by user because of carelessness, the meeting of one in the 201-206 of this maloperation region by non-operational region 1021 in the preset distance widened and first side 11 and second side 12 length of any one one of three equal parts length the area that limits cover, thus make finger contact to maloperation region 201-206 in one any response is not occurred to this touch action, thus can not erroneous input be produced.
Step 307, exits flow process.
Refer to Fig. 8, Fig. 8 is handheld device electrical block diagram according to a second embodiment of the present invention.As shown in Figure 8, in the present embodiment, handheld device comprises touch-screen 401 and touch screen control module 402, wherein, touch screen control module 402 comprises Proximity Sensor 4021-4026, above-mentioned step 301, step 304, step 305, step 306 and step 307 are performed by touch screen control module 402, and step 302 and step 303 are performed by Proximity Sensor.
In the present embodiment, by arranging Proximity Sensor on a handheld device, utilize on Proximity Sensor direct-detection maloperation region whether there is touch action, and when there is touch action, dynamically widen non-operational region 1023, thus the situation effectively reducing erroneous input occurs.
Therefore, the mistaken touch processing method of the touch-screen of handheld device provided by the invention, it can comprise the following steps: first side parallel with the length direction of touch-screen on the touchscreen and second side arrange the non-operational region touch action of user not being produced to response respectively, wherein non-operational region has a predetermined width, and defines that NOT-AND operation region is adjacent and to cover the region of a predetermined area be maloperation region; Judge whether there is touch action on maloperation region; Determine on maloperation region, there is touch action time, produce touch action maloperation region on widen predetermined width one preset distance.
In the mistaken touch processing method of the touch-screen of above-mentioned handheld device, coordinate value algorithm by the first embodiment judges whether there is touch action on maloperation region, and the Proximity Sensor also by the second embodiment judges whether there is touch action on maloperation region.
Similarly, determine on maloperation region, there is touch action time, the maloperation region producing touch action is widened in the step of predetermined width one preset distance, also the particular location in the maloperation region of touch action can be produced by the coordinate value Algorithm Analysis in the first embodiment, and, also can be detected the particular location in the maloperation region producing touch action by the Proximity Sensor in the second embodiment, the present invention can choose arbitrarily its detailed description of the invention according to actual needs.
It should be noted that the technical scheme that the present invention discloses is particularly useful for capacitive touch screen.
Therefore, by above scheme, the mistaken touch processing method of handheld device provided by the invention and touch-screen thereof does not produce the non-operational region of response and adjacent with this non-operational region and cover the maloperation region of predetermined area by arranging on the touchscreen to touch action, determine on maloperation region, there is touch action time, the maloperation region producing touch action is widened the predetermined width of non-operational region, can effectively solve user with finger hold handheld device time may produce mistaken touch on the side area of the touch-screen of handheld device, thus cause the problem of erroneous input.
These are only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (2)
1. a mistaken touch processing method for the touch-screen of handheld device, is characterized in that, said method comprising the steps of:
A. parallel with the length direction of described touch-screen on described touch-screen first side and second side arrange the non-operational region touch action of user not being produced to response respectively, wherein said non-operational region has a predetermined width, and definition is adjacent with described non-operational region and the region covering a predetermined area is maloperation region;
B. judge whether there is described touch action on described maloperation region;
C. determine on described maloperation region, there is described touch action time, produce described touch action described maloperation region on widen described predetermined width one preset distance;
Wherein, in described step b, described touch-screen gathers multiple sampled points that touch action described in each is corresponding respectively, to form the sampled point set corresponding with touch action described in each, and, in sampled point set described in each, judge in the abscissa value of described multiple sampled point, whether include the abscissa value corresponding to described first side or the abscissa value corresponding to described second side, and determine in the abscissa value of described multiple sampled point, to include the abscissa value corresponding to described first side or the abscissa value corresponding to described second side time, maximum abscissa value in the described multiple sampled point of further acquisition and minimum abscissa value, and described maximum abscissa value is deducted described minimum abscissa value, to obtain the first difference, determining described first difference and be greater than a half of described predetermined width, judge whether the duration of described touch action is greater than the very first time further, and determine the described duration be greater than the described very first time time, determine and there is described touch action on described maloperation region,
In described step c, maximum ordinate value in the described multiple sampled point of further acquisition and minimum ordinate value, described maximum ordinate value is deducted described minimum ordinate value, to obtain the second difference, with described second difference for length widens preset distance described in described predetermined width one in the scope that described maximum ordinate value and described minimum ordinate value limit.
2. a handheld device, is characterized in that, comprising:
Touch-screen;
Touch screen control module, be connected with touch-screen, first side parallel with the length direction of described touch-screen on described touch-screen and second side arrange the non-operational region touch action of user not being produced to response respectively, wherein said non-operational region has a predetermined width, and definition is adjacent with described non-operational region and the region covering a predetermined area is maloperation region, touch screen control module judges whether there is described touch action on described maloperation region, determine on described maloperation region, there is described touch action time, widen described predetermined width one preset distance,
Wherein, described touch screen control module gathers multiple sampled points corresponding to touch action described in each respectively on described touch-screen, to form the sampled point set corresponding with touch action described in each, and, described touch screen control module is in sampled point set described in each, judge in the abscissa value of described multiple sampled point, whether include the abscissa value corresponding to described first side or the abscissa value corresponding to described second side, and determine in the abscissa value of described multiple sampled point, to include the abscissa value corresponding to described first side or the abscissa value corresponding to described second side time, maximum abscissa value in the described multiple sampled point of further acquisition and minimum abscissa value, and described maximum abscissa value is deducted described minimum abscissa value, to obtain the first difference, determining described first difference and be greater than a half of described predetermined width, judge whether the duration of described touch action is greater than the very first time further, and determine the described duration be greater than the described very first time time, determine and there is described touch action on described maloperation region,
Described touch screen control module obtains maximum ordinate value in described multiple sampled point and minimum ordinate value further, described maximum ordinate value is deducted described minimum ordinate value, to obtain the second difference, with described second difference for length widens preset distance described in described predetermined width one in the scope that described maximum ordinate value and described minimum ordinate value limit.
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