CN109828685A - A kind of differentiating method, touch screen and mobile terminal of the touch screen with water Yu deceitful point - Google Patents
A kind of differentiating method, touch screen and mobile terminal of the touch screen with water Yu deceitful point Download PDFInfo
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Abstract
The present invention provides a kind of touch screens differentiating method, touch screen and mobile terminal with water and deceitful point, wherein method includes: acquisition live signal amount；Live signal magnitude is compared with base value when not touching, obtains positive difference and negative sense difference respectively；Finger pressing area is searched according to positive difference；Region undetermined is searched according to negative sense difference；Whether the number of the number and region undetermined that judge finger pressing area is all for two；If it is, taking the up-and-down boundary of the first finger pressing area and the right boundary of second finger pressing area, the first overlapping region is formed；The right boundary of the first finger pressing area and the up-and-down boundary of second finger pressing area are taken, the second overlapping region is formed；Judge whether the first region undetermined and the second region undetermined are deceitful point according to the positional relationship in the first region undetermined and the second region undetermined and first overlapping region and the second overlapping region；The method increase multi-point touch screens have for screen water judgement accuracy.
Description
Technical field
Differentiating method, touch screen the present invention relates to technical field of touch control more particularly to a kind of touch screen with water and deceitful point
And mobile terminal.
Background technique
It is single when mobile phone is placed on insulating bodies by user, such as on the swivel chair of office in mutual capacitance multi-touch system
When hand two refers to operation touch-control (only two abutment touch screens, other limbs do not contact touch screen), mobile phone is in vacant state,
Due to mobile phone the ground of (i.e. GND) and the earth is isolated at this time, the variable quantity very little that user touches at this time, and two touches referred to will form
" deceitful point ", as shown in Figure 1, point A and point B is the true pressing of two fingers, point A ' and point B ' are deceitful point, are embodied at deceitful point
It presents and presses opposite variable quantity with finger.
When touch screen surface has water, the Data Representation of water position, which is also presented, presses opposite variable quantity with finger, this
Opposite variable quantity is pressed into referred to as aqueous value with finger, and general touch screen has water Rule of judgment is whether to judge touch screen
Have aqueous value, when aqueous value be more than it is a certain amount of, judge that touch screen has water, it is therefore possible to deceitful point is mistakenly considered aqueous value
Make the erroneous judgement that touch screen has water.
Summary of the invention
It is an object of the invention in the prior art deceitful point may be mistakenly considered touch screen for above-mentioned and have asking for water
Topic, proposes a kind of differentiating method, touch screen and mobile terminal of the touch screen with water and deceitful point, can effectively distinguish deceitful point and touch
The case where screen band water.
A kind of differentiating method of the touch screen with water and deceitful point, comprising:
Acquire live signal amount；
Live signal magnitude is compared with base value when not touching, positive difference is obtained respectively and negative sense is poor
Value；
Finger pressing area is searched according to the positive difference；
Region undetermined is searched according to the negative sense difference；
Whether the number of the number and region undetermined that judge the finger pressing area is all for two；
If it is, taking the up-and-down boundary of the first finger pressing area and the right boundary of second finger pressing area, shape
At the first overlapping region；The right boundary of the first finger pressing area and the up-and-down boundary of second finger pressing area are taken, is formed
Second overlapping region；
According to the position in the first region undetermined and the second region undetermined and first overlapping region and the second overlapping region
Relationship judges whether the first region undetermined and the second region undetermined are deceitful point.
Further, the live signal magnitude is compared with base value when not touching, is obtained respectively positive
Difference and negative sense difference, comprising:
Live signal magnitude is subtracted with the base value, and the negative value in the difference of acquisition is reset, obtains positive difference；
Base value is subtracted with the live signal magnitude, and the negative value in the difference of acquisition is reset, obtains negative sense difference.
Further, finger pressing area is searched according to the positive difference, comprising:
Setting first touches pressing threshold value；
The positive difference is touched pressing threshold value with described first to be compared, if the forward direction difference is greater than described
First touches pressing threshold value, then according to the positive difference recursive lookup finger pressing area.
Further, region undetermined is searched according to the negative sense difference, comprising:
Setting second touches pressing threshold value；
The negative sense difference is touched pressing threshold value with described second to be compared, if the negative sense difference is greater than described
Second touches pressing threshold value, then according to the negative sense difference recursive lookup region undetermined.
Further, described second pressing threshold value is touched as the 50% of the first touch pressing threshold value.
Further, area is overlapped with first overlapping region and second according to the first region undetermined and the second region undetermined
The positional relationship in domain judges whether the first region undetermined and the second region undetermined are deceitful point, comprising:
Judge whether the first region undetermined is located in the first overlapping region；
If the first region undetermined is located in first overlapping region, judge whether the second region undetermined is located at second
In overlapping region；
If the second region undetermined is located in second overlapping region, it is determined that the first region undetermined and the second area undetermined
Domain is deceitful point.
Further, if first region undetermined is not located at first overlapping region, judge described first
Whether region undetermined is located at the second overlapping region；
If first region undetermined is located at second overlapping region, judge the described second region undetermined whether position
In the first overlapping region；
If second region undetermined is located at the first overlapping region, it is determined that first region undetermined and second undetermined
Region is deceitful point.
Further, if first region undetermined, which is neither located at the first overlapping region nor is located at second, is overlapped area
Domain or second region undetermined are neither located at the first overlapping region nor are located at the second overlapping region, it is determined that described the
One region undetermined and the second region undetermined are aqueous areas.
A kind of touch screen, the differentiating method applied to above-mentioned touch screen with water and deceitful point, the touch screen include display
Area and non-display area are provided with multiple driving sensing units in the viewing area, be provided in the non-display area touch-control IC and
Memory, the touch-control IC are connect by signal wire with the driving sensing unit, and a plurality of instruction is stored in the memory,
The touch-control IC is for reading described instruction and executing:
Acquire live signal amount；
Live signal magnitude is compared with base value when not touching, positive difference is obtained respectively and negative sense is poor
Value；
Finger pressing area is searched according to the positive difference；
Region undetermined is searched according to the negative sense difference；
Whether the number of the number and region undetermined that judge the finger pressing area is all for two；
If it is, taking the up-and-down boundary of the first finger pressing area and the right boundary of second finger pressing area, shape
At the first overlapping region；The right boundary of the first finger pressing area and the up-and-down boundary of second finger pressing area are taken, is formed
Second overlapping region；
According to the position in the first region undetermined and the second region undetermined and first overlapping region and the second overlapping region
Relationship judges whether the first region undetermined and the second region undetermined are deceitful point.
A kind of mobile terminal, including above-mentioned touch screen.
Differentiating method, touch screen and mobile terminal of the touch screen provided by the invention with water and deceitful point, can effectively distinguish
Two refer to the aqueous value of deceitful point and touch screen with water pressed when hanging, so that improving multi-point touch screen has sentencing for water for screen
Disconnected accuracy.
Detailed description of the invention
Fig. 1 is the deceitful schematic diagram formed under vacant state.
Fig. 2 is a kind of flow chart of embodiment of differentiating method of the touch screen provided by the invention with water and deceitful point.
Fig. 3 is that the first overlapping region and second is overlapped area in differentiating method of the touch screen provided by the invention with water and deceitful point
The schematic diagram in domain,
Fig. 4 is a kind of structural schematic diagram of embodiment of touch screen provided by the invention.
Specific embodiment
To make the purpose of the present invention, technical solution and effect clearer, clear and definite, right as follows in conjunction with drawings and embodiments
The present invention is further described.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to
Limit the present invention.
Embodiment one
With reference to Fig. 2, a kind of the present embodiment provides touch screens differentiating method with water and deceitful point, comprising:
Step S101 acquires live signal amount；
Live signal magnitude is compared by step S102 with base value when not touching, obtains positive difference respectively
With negative sense difference；
Step S103 searches finger pressing area according to the positive difference；
Step S104 searches region undetermined according to the negative sense difference；
Step S105, whether the number of the number and region undetermined that judge the finger pressing area is all for two；
Step S106, if it is, taking the up-and-down boundary of the first finger pressing area and a left side for second finger pressing area
Right margin forms the first overlapping region；Take the first finger pressing area right boundary and second finger pressing area up and down
Boundary forms the second overlapping region；
Step S107 is overlapped area with first overlapping region and second according to the first region undetermined and the second region undetermined
The positional relationship in domain judges whether the first region undetermined and the second region undetermined are deceitful point.
Specifically, step S101 is executed, acquires live signal amount according to predeterminated frequency.
Step S102 is executed, live signal magnitude is compared with base value when not touching, is obtained respectively positive
Difference and negative sense difference, specifically include:
Live signal magnitude is subtracted with the base value, and the negative value in the difference of acquisition is reset, obtains positive difference；
Base value is subtracted with the live signal magnitude, and the negative value in the difference of acquisition is reset, obtains negative sense difference.
Further, step S103 is executed, finger pressing area is searched according to the positive difference, is specifically included:
Setting first touches pressing threshold value；
The positive difference is touched pressing threshold value with described first to be compared, if the forward direction difference is greater than described
First touches pressing threshold value, then according to the positive difference recursive lookup finger pressing area.
As a preferred embodiment, first touches pressing threshold value as 180-220.
Further, step S104 is executed, region undetermined is searched according to the negative sense difference, comprising:
Setting second touches pressing threshold value；
The negative sense difference is touched pressing threshold value with described second to be compared, if the negative sense difference is greater than described
Second touches pressing threshold value, then according to the negative sense difference recursive lookup region undetermined.
As a preferred embodiment, described second touches 50% that pressing threshold value is the first touch pressing threshold value.
Further, execute step S105, judge the finger pressing area number and region undetermined number whether
It is all two, if so, S106 is thened follow the steps, if it is not, then carrying out the judgement of next frame signal.
Step S106 is executed, if the number of finger pressing area and the number in region undetermined are all two, finger is pressed
Intermediate pressure section include the first finger pressing area and second finger pressing area, region undetermined include the first region undetermined and second to
Determine region.
With reference to Fig. 3, it is assumed that the coboundary of the first finger pressing area A1 is U1, lower boundary D1, second finger pressing area
The left margin of domain A2 is L2, the up-and-down boundary and second finger pressing area A2 of right margin R2, the first finger pressing area A1
Right boundary formed the first overlapping region be C1；The right boundary and second finger pressing area of first finger pressing area A1
The second overlapping region that the up-and-down boundary of domain A2 is formed is C2.
Judge whether the first region undetermined is located in the first overlapping region C1, is overlapped if the first region undetermined is located at first
In the C1 of region, then judge whether the second region undetermined is located in the second overlapping region C2, if the second region undetermined is located at second
In the C2 of overlapping region, it is determined that the first region undetermined and the second region undetermined are deceitful point.
Further, if the first region undetermined is not located in the first overlapping region C1, judge the first region undetermined
Whether it is located in the second overlapping region C2, if the first region undetermined is located at the second overlapping region C2, judges the second area undetermined
Whether domain is located in the first overlapping region C1, if the second region undetermined is located in the first overlapping region C1, it is determined that first to
Determine region and the second region undetermined is deceitful point.
Further, if the first region undetermined is neither located in the first overlapping region C1 nor is located at the second overlapping region
In C2 or the second region undetermined is neither located at the first overlapping region C1 nor is located at the second overlapping region C2, it is determined that touches
Screen band water.
Differentiating method of the touch screen provided in this embodiment with water and deceitful point, two refer to pressing when effectively can distinguish hanging
The aqueous value of deceitful point and touch screen with water, to improve the accuracy that multi-point touch screen has screen the judgement of water.
Embodiment two
With reference to Fig. 4, the present embodiment provides a kind of touch screens, the differentiation side applied to above-mentioned touch screen with water and deceitful point
Method, the touch screen include viewing area A and non-display area B, and multiple driving sensing units, non-display area B are provided in the A of viewing area
It is inside provided with touch-control IC201 and memory 202, touch-control IC201 is connect by signal wire with driving sensing unit, memory 202
It is inside stored with a plurality of instruction, touch-control IC201 is for reading described instruction and executing:
Acquire live signal amount；
Live signal magnitude is compared with base value when not touching, positive difference is obtained respectively and negative sense is poor
Value；
Finger pressing area is searched according to the positive difference；
Region undetermined is searched according to the negative sense difference；
Whether the number of the number and region undetermined that judge the finger pressing area is all for two；
If it is, taking the up-and-down boundary of the first finger pressing area and the right boundary of second finger pressing area, shape
At the first overlapping region；The right boundary of the first finger pressing area and the up-and-down boundary of second finger pressing area are taken, is formed
Second overlapping region；
The boundary in region undetermined is compared with first overlapping region and the second overlapping region, according to comparison result
Judge whether region undetermined is deceitful point.
Specifically, m induction electrode 203 and n driving electricity are provided in touch screen provided in this embodiment in the A of viewing area
Pole 204 forms m*n driving sensing unit.Live signal amount is obtained by touch-control IC turntable driving sensing unit.
Further, touch-control IC201 is also used to execute:
Live signal magnitude is subtracted with the base value, and the negative value in the difference of acquisition is reset, obtains positive difference；
Base value is subtracted with the live signal magnitude, and the negative value in the difference of acquisition is reset, obtains negative sense difference.
Further, touch-control IC201 is also used to execute:
Setting first touches pressing threshold value；
The positive difference is touched pressing threshold value with described first to be compared, if the forward direction difference is greater than described
First touches pressing threshold value, then according to the positive difference recursive lookup finger pressing area.
Further, touch-control IC201 is also used to execute:
Setting second touches pressing threshold value；
The negative sense difference is touched pressing threshold value with described second to be compared, if the negative sense difference is greater than described
Second touches pressing threshold value, then according to the negative sense difference recursive lookup region undetermined.
As a preferred embodiment, described second touches 50% that pressing threshold value is the first touch pressing threshold value.
Further, touch-control IC is also used to execute:
Judge whether the first region undetermined is located in the first overlapping region；
If the first region undetermined is located in first overlapping region, judge whether the second region undetermined is located at second
In overlapping region；
If the second region undetermined is located in second overlapping region, it is determined that the first region undetermined and the second area undetermined
Domain is deceitful point.
If first region undetermined is not located at first overlapping region, judge that the described first region undetermined is
It is no to be located at the second overlapping region；
If first region undetermined is located at second overlapping region, judge the described second region undetermined whether position
In the first overlapping region；
If second region undetermined is located at the first overlapping region, it is determined that first region undetermined and second undetermined
Region is deceitful point.
If first region undetermined is neither located at the first overlapping region nor is located at the second overlapping region or described
Second region undetermined be neither located at the first overlapping region and also be located at the second overlapping region, it is determined that first region undetermined and
Second region undetermined is aqueous areas.
Concrete operating principle please refers to embodiment one, and details are not described herein.
Touch screen provided in this embodiment, two refer to the water of deceitful point and touch screen with water pressed when effectively can distinguish hanging
Property value, to improve the accuracy that multi-point touch screen has screen the judgement of water.
Embodiment three
The present embodiment provides a kind of mobile terminals, including above-mentioned touch screen.
Mobile terminal provided in this embodiment can be with are as follows: any tool such as mobile phone, tablet computer, display, laptop
There are the products or components of display function.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of differentiating method of touch screen with water and deceitful point characterized by comprising
Acquire live signal amount；
Live signal magnitude is compared with base value when not touching, obtains positive difference and negative sense difference respectively；
Finger pressing area is searched according to the positive difference；
Region undetermined is searched according to the negative sense difference；
Whether the number of the number and region undetermined that judge the finger pressing area is all for two；
If it is, take the up-and-down boundary of the first finger pressing area and the right boundary of second finger pressing area, the is formed
One overlapping region；The right boundary of the first finger pressing area and the up-and-down boundary of second finger pressing area are taken, forms second
Overlapping region；
According to the positional relationship in the first region undetermined and the second region undetermined and first overlapping region and the second overlapping region
Judge whether the first region undetermined and the second region undetermined are deceitful point.
2. differentiating method of the touch screen according to claim 1 with water and deceitful point, which is characterized in that by live signal magnitude
It is compared with base value when not touching, obtains positive difference and negative sense difference respectively, comprising:
Live signal magnitude is subtracted with the base value, and the negative value in the difference of acquisition is reset, obtains positive difference；
Base value is subtracted with the live signal magnitude, and the negative value in the difference of acquisition is reset, obtains negative sense difference.
3. differentiating method of the touch screen according to claim 2 with water and deceitful point, which is characterized in that poor according to the forward direction
Value searches finger pressing area, comprising:
Setting first touches pressing threshold value；
The positive difference is touched pressing threshold value with described first to be compared, if the forward direction difference is greater than described first
Pressing threshold value is touched, then according to the positive difference recursive lookup finger pressing area.
4. differentiating method of the touch screen according to claim 3 with water and deceitful point, which is characterized in that according to the negative sense difference
Search region undetermined, comprising:
Setting second touches pressing threshold value；
The negative sense difference is touched pressing threshold value with described second to be compared, if the negative sense difference is greater than described second
Pressing threshold value is touched, then according to the negative sense difference recursive lookup region undetermined.
5. differentiating method of the touch screen according to claim 4 with water and deceitful point, which is characterized in that second touch is pressed
Pressing threshold value is the 50% of the first touch pressing threshold value.
6. differentiating method of the touch screen according to claim 1 with water and deceitful point, which is characterized in that according to the first area undetermined
The positional relationship of domain and the second region undetermined and first overlapping region and the second overlapping region judge the first region undetermined and
Whether the second region undetermined is deceitful point, comprising:
Judge whether the first region undetermined is located in the first overlapping region；
If the first region undetermined is located in first overlapping region, judge whether the second region undetermined is located at the second coincidence
In region；
If the second region undetermined is located in second overlapping region, it is determined that the first region undetermined and the second region undetermined are equal
For deceitful point.
7. differentiating method of the touch screen according to claim 6 with water and deceitful point, which is characterized in that if described first to
Determine region and be not located at first overlapping region, then judges whether the described first region undetermined is located at the second overlapping region；
If first region undetermined is located at second overlapping region, judge whether the described second region undetermined is located at
One overlapping region；
If second region undetermined is located at the first overlapping region, it is determined that first region undetermined and the second region undetermined
It is deceitful point.
8. differentiating method of the touch screen according to claim 7 with water and deceitful point, which is characterized in that if described first to
Determine region and be neither located at the first overlapping region nor be located at the second overlapping region or second region undetermined to be neither located at the
One overlapping region is not also located at the second overlapping region, it is determined that first region undetermined and the second region undetermined are aqueous area
Domain.
9. a kind of touch screen, which is characterized in that the area applied to touch screen a method as claimed in any one of claims 1-8 with water and deceitful point
Divide method, the touch screen includes viewing area and non-display area, and multiple driving sensing units are provided in the viewing area, described
Touch-control IC and memory are provided in non-display area, the touch-control IC is connect by signal wire with the driving sensing unit, institute
It states and is stored with a plurality of instruction in memory, the touch-control IC is for reading described instruction and executing:
Acquire live signal amount；
Live signal magnitude is compared with base value when not touching, obtains positive difference and negative sense difference respectively；
Finger pressing area is searched according to the positive difference；
Region undetermined is searched according to the negative sense difference；
Whether the number of the number and region undetermined that judge the finger pressing area is all for two；
If it is, take the up-and-down boundary of the first finger pressing area and the right boundary of second finger pressing area, the is formed
One overlapping region；The right boundary of the first finger pressing area and the up-and-down boundary of second finger pressing area are taken, forms second
Overlapping region；
According to the positional relationship in the first region undetermined and the second region undetermined and first overlapping region and the second overlapping region
Judge whether the first region undetermined and the second region undetermined are deceitful point.
10. a kind of mobile terminal, which is characterized in that including touch screen as claimed in claim 9.
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| CN201811554930.6A CN109828685B (en) | 2018-12-18 | 2018-12-18 | Method for distinguishing water and rogue points on touch screen, touch screen and mobile terminal |
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| US20100007630A1 (en) * | 2008-07-09 | 2010-01-14 | Egalax_Empia Technology Inc. | Method and device for capacitive sensing |
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Effective date of registration: 20240124 Address after: Room 409, 4th Floor, Building 1, No. 199 Weikang Road, Xiangzhou District, Zhuhai City, Guangdong Province, 519000 Patentee after: Zhuhai Hongpeihan Electronic Technology Co.,Ltd. Country or region after: China Address before: 2501, 2401, block a, building 1, Shenzhen new generation industrial park, 136 Zhongkang Road, Meidu community, Meilin street, Futian District, Shenzhen, Guangdong 518000 Patentee before: Shenzhen deminli Technology Co.,Ltd. Country or region before: China |
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