CN106354354B - Control method and device of capacitive touch screen and terminal equipment - Google Patents
Control method and device of capacitive touch screen and terminal equipment Download PDFInfo
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- CN106354354B CN106354354B CN201610891187.8A CN201610891187A CN106354354B CN 106354354 B CN106354354 B CN 106354354B CN 201610891187 A CN201610891187 A CN 201610891187A CN 106354354 B CN106354354 B CN 106354354B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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Abstract
The embodiment of the invention relates to the technical field of capacitive touch control, in particular to a control method and device of a capacitive touch screen and terminal equipment. The capacitive touch screen is divided into a plurality of touch areas; the method comprises the following steps: the method comprises the steps that a global controller receives a touch signal generated on a capacitive touch screen; the global controller determines area information of a touch area corresponding to the touch signal and sends the area information to the main controller; the global controller controls a touch area corresponding to the touch signal to be communicated with the local controller so that the local controller determines touch action position information, and the local controller sends the touch action position information to the main controller; and the main controller determines the touch position of the user on the capacitive touch screen according to the area information and the touch action position information. The capacitive touch screen control method and device and the terminal device provided by the embodiment of the invention can enable the capacitive touch screen to be suitable for the terminal device with a large screen size.
Description
Technical Field
The embodiment of the invention relates to the technical field of capacitive touch control, in particular to a control method and device of a capacitive touch screen and terminal equipment.
Background
The capacitive touch technology is widely applied to various touch devices due to the characteristics of high touch precision, high response speed and the like, for example, a capacitive touch screen is generally applied to various devices such as a mobile phone and a tablet computer.
The capacitive touch screen comprises an Indium Tin Oxide (ITO) layer made of ITO materials, wherein a miniature static grid used for storing charges is formed in the ITO layer, and the miniature static grid covers the whole screen of the capacitive touch screen. When a finger clicks the capacitive touch screen, a small amount of charges are absorbed from a contact point to cause voltage drop of an electrode at a position of the touch screen corresponding to the contact point, and a controller determines the touch position of a user according to the voltage drop; there is also a capacitive screen of mutual capacitance type, the stable capacitance value is determined by the coupling capacitance between the rows and the columns, and when the capacitive touch screen is clicked by a finger, the capacitance value changes.
The inventor discovers that in the process of implementing the invention: the capacitive touch screen is mainly applied to terminal equipment with a relatively small size, such as a mobile phone and a tablet personal computer, but for the terminal equipment with the relatively large size, such as a large-screen television, in order to enable the large-size terminal equipment to achieve high touch control accuracy, the number of wires on the screen of the large-screen television is relatively large, and the processing process of determining the touch position by the controller is relatively difficult.
Disclosure of Invention
The embodiment of the invention provides a control method and device of a capacitive touch screen and terminal equipment, so that the capacitive touch screen can be suitable for the terminal equipment with a large screen size.
In a first aspect, an embodiment of the present invention provides a method for controlling a capacitive touch screen, where the capacitive touch screen is divided into a plurality of touch areas; the method comprises the following steps:
the method comprises the steps that a global controller receives a touch signal generated on a capacitive touch screen;
the global controller determines area information of a touch area corresponding to the touch signal and sends the area information to the main controller;
the global controller controls a touch area corresponding to the touch signal to be connected with a local controller so that the local controller determines touch action position information, and the local controller sends the touch action position information to the main controller;
and the main controller determines the touch position of the user on the capacitive touch screen according to the area information and the touch action position information.
In a second aspect, an embodiment of the present invention provides a control device for a capacitive touch screen, where the capacitive touch screen is divided into a plurality of touch areas;
the control device includes: a master controller, a global controller and a local controller;
the global controller is connected with the capacitive touch screen and used for receiving a touch signal generated on the capacitive touch screen;
the global controller is further connected with the master controller and is used for sending the area information to the master controller after the area information of the touch area corresponding to the touch signal is determined;
the global controller is further used for controlling the touch area corresponding to the touch signal to be communicated with the local controller, so that the local controller determines position information of a touch action and sends the position information to the main controller;
and the main controller determines the touch position of the user on the capacitive touch screen according to the area information and the touch action position information.
In a third aspect, an embodiment of the present invention provides a terminal device, including: capacitive touch screen and above-mentioned capacitive touch screen's controlling means.
In the technical scheme of the embodiment of the invention, the capacitive touch screen is divided into a plurality of touch areas, when the capacitive touch screen is controlled, the global controller carries out global monitoring on each touch area, and determines the area information of the touch area corresponding to the touch signal when the touch signal exists, the global controller is also used for connecting the touch area corresponding to the touch signal with the local controller when the touch signal exists, so that the local controller determines the specific touch position information of the touch action, and the main controller obtains the touch position of a user on the capacitive touch screen according to the area information determined by the global controller and the touch position information determined by the local controller. In addition, the method adopts the global controller and the local controller to calculate the area information and the touch position information, and simplifies the calculation complexity of each controller, so that the capacitive touch screen is suitable for terminal equipment with large screen size.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of embodiments of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a control device of a capacitive touch screen according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the X-axis electrode distribution of the touch area of FIG. 1;
FIG. 3 is a schematic diagram of the Y-axis electrode distribution of the touch area of FIG. 1;
FIG. 4 is a schematic diagram of a touch area electrode distribution formed by combining the X-axis electrodes of FIG. 2 and the Y-axis electrodes of FIG. 3;
FIG. 5 is a schematic diagram of the connection of the control device of FIG. 1 to the electrodes of FIG. 4;
FIG. 6 is a flowchart illustrating a method for controlling a capacitive touch screen according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating a control method for a second capacitive touch screen according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a processing apparatus in an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The control scheme of the capacitive touch screen is suitable for terminal equipment with the capacitive touch screen, for example, the control scheme of the capacitive touch screen is suitable for terminal equipment with a large-size screen, such as television, advertising machine, electronic whiteboard and other terminal equipment.
FIG. 1 is a drawing of the present inventionThe structure of the control device of the capacitive touch screen is schematically illustrated in the embodiment. As shown in FIG. 1, the capacitive touch screen 101 controlled by the control device is divided into a plurality of touch areas, as shown in FIG. 1, the capacitive touch screen 101 is divided into A1B1、A1B2……AiBjAnd multiple touch areas, wherein the value of i is any value from 1 to m, the value of j is any value from 1 to n, no intersection exists between the multiple touch areas, and the overlapping area of the multiple touch areas is equal to the area of the capacitive touch screen 101.
In the embodiment of the present invention, one possible way to divide the capacitive touch screen 101 into a plurality of touch areas is: the capacitive touch screen 101 is a non-spliced whole screen, and the whole screen is divided into a plurality of touch areas by a coordinate allocation manner, for example, the capacitive screen in fig. 1 is a whole screen, and each rectangular area a in fig. 1iBjThe touch areas are distributed through coordinates, wherein the value of i is any value from 1 to m, and the value of j is any value from 1 to n; in another possible way, the capacitive touch screen 101 is formed by physically splicing a plurality of sub-screens, one sub-screen being a touch area, such as each rectangular area a in fig. 1iBjEach sub-screen is a touch area.
FIG. 2 is a schematic diagram of the X-axis electrode distribution of the touch area of FIG. 1. FIG. 3 is a schematic diagram of the Y-axis electrode distribution of the touch area of FIG. 1. Fig. 4 is a schematic diagram of a touch area electrode distribution formed by combining the X-axis electrodes in fig. 2 and the Y-axis electrodes in fig. 3.
As shown in fig. 2 and 3, in the touch screen using the projected capacitance, the ITO layer is etched to form a plurality of rows of horizontal electrodes (i.e., X-axis electrodes) and a plurality of columns of vertical electrodes (i.e., Y-axis electrodes), and in particular, the diamond blocks in fig. 2 and 3 represent the electrodes. The touch area electrodes shown in fig. 4 are formed in a manner such that row electrodes and column electrodes are interleaved.
In the embodiment of the present invention, the controlling of the capacitive touch screen 101 mainly includes acquiring a touch signal generated on the capacitive touch screen 101 and determining a touch position of a user according to the touch signal.
In order to implement the above control on the capacitive touch screen 101, as shown in fig. 1, a control device for controlling the capacitive touch screen 101 according to an embodiment of the present invention includes: a master controller 104, a global controller 102, and a local controller 103; the global controller 102 is connected to the capacitive touch screen 101, specifically to electrodes in the capacitive touch screen 101, and is configured to receive a touch signal generated on the capacitive touch screen 101, for example, when a user touches at least one touch area in the capacitive touch screen 101 with a finger, a voltage/current on an electrode corresponding to the touch point on the corresponding area changes, the global controller 102 collects the changed voltage/current/capacitance signal, and the global controller 102 determines area information of the touch area where the touch action occurs according to the changed voltage/current/capacitance signal. The global controller 102 is further connected to the master controller 104, and configured to send area information of the determined touch area where the touch action occurs to the master controller 104. Further, the global controller 102 is further configured to control the touch area where the touch action occurs to communicate with the local controller 103, so that the local controller 103 determines the position information where the touch action occurs, and the local controller 103 sends the position information where the touch action occurs to the master controller 104; the main controller 104 determines the touch position of the user on the capacitive touch screen 101 according to the area information reported by the global controller 102 and the touch action position information reported by the local controller 103.
According to the embodiment of the invention, the capacitive touch screen 101 is controlled in different areas, and in an optional scheme, each touch area is an independent capacitive touch screen 101, so that the embodiment of the invention is suitable for a large-size capacitive touch screen 101 consisting of a plurality of independent capacitive touch screens 101, and is suitable for terminal equipment with a large-size screen.
Fig. 5 is a schematic diagram of the connection of the control device of fig. 1 to the electrodes of fig. 4. As shown in fig. 5, the global controller 102 is connected to the electrodes in the capacitive touch screen 101 through the switch unit 105, and the global controller 102 controls the connection between the local controller 103 and the electrodes in the capacitive touch screen 101 through the switch unit 105, specifically:
as shown in fig. 5, the switching unit 105 includes a plurality of signal input interfaces, such as C1, C2, C3 … … Cn in fig. 5; the multiple signal input interfaces are connected with the electrode signal output ends of each row and each column in the capacitive touch screen 101 in a one-to-one correspondence manner, as shown in fig. 5, C1、C2……CnA row electrode signal output terminal or a column electrode signal output terminal.
In a possible manner, each row electrode of each touch area is provided with a row electrode signal output end, each column electrode of each touch area is provided with a column electrode signal output end, and the plurality of signal input interfaces of the switch unit 105 are connected with the row electrode signal output end and the column electrode signal output end of each touch area in a one-to-one correspondence manner. The connection manner of the signal input interface of the switch unit 105 and the capacitive touch screen 101 is suitable for a scenario in which the touch areas in the capacitive touch screen 101 are independent capacitive touch screens 101.
In another possible manner, one entire row electrode of the capacitive touch screen 101 corresponds to one row electrode signal output end, and one entire column electrode of the capacitive touch screen 101 corresponds to one column electrode signal output end; the plurality of signal input interfaces of the switch unit 105 are respectively connected with the electrode signal output ends of each row and the electrode signal output ends of each column in a one-to-one correspondence manner. The connection manner between the signal input interface of the switch unit 105 and the capacitive touch screen 101 is suitable for a scenario in which the capacitive touch screen 101 is an integral screen, and certainly, the connection manner is also suitable for a scenario in which each touch area is an independent capacitive touch screen 101.
As shown in fig. 5, the switch unit 105 further includes a first output interface EiSaid first output interface EiIs connected to the global controller 102.
As shown in FIG. 5, the switch unit 105 further includes a plurality of second signal output interfaces, D in FIG. 51、D2……DnSaid plurality of second signalsThe output interfaces are in one-to-one correspondence with the plurality of signal input interfaces, respectively, and the plurality of second signal output interfaces are connected with the local controller 103.
As shown in fig. 5, a switch is disposed on the connection path between each second signal output interface and the local controller 103, as shown in fig. 5, corresponding to D1、D2……DnThe paths are provided with switches F in one-to-one correspondence1、F2……Fn(ii) a The switch unit 105 controls the on or off of each switch under the control of a touch signal generated in the global control chip or the capacitive touch screen 101, respectively.
Based on the control devices shown in fig. 1 and fig. 5, the embodiment of the invention also provides a control method of the capacitive touch screen. Fig. 6 is a flowchart of a method for controlling a capacitive touch screen according to an embodiment of the invention. The processing steps of the control method shown in fig. 6 include:
step S201: the global controller receives a touch signal generated on the capacitive touch screen.
The method comprises the steps that a global controller monitors each touch area of a capacitive touch screen, the global controller collects voltage/current/capacitance signals of each row and each column of the capacitive touch screen, when at least one area on the capacitive touch screen has a touch action, voltage/current/capacitance signals (corresponding electrode signals) on electrodes of the area, corresponding to the touch action, on the capacitive touch screen change, and the global controller takes the voltage/current/capacitance signals of the touch area with the change quantity larger than a preset threshold value as touch signals.
Step S202: and the global controller determines the area information of the touch area corresponding to the touch signal and sends the area information to the main controller.
Step S203: the global controller controls a touch area corresponding to the touch signal to be connected with the local controller so that the local controller determines touch action position information, and the local controller sends the touch action position information to the main controller;
step S204: and the main controller determines the touch position of the user on the capacitive touch screen according to the area information and the touch action position information.
In the embodiment of the invention, the global controller determines a touch area where a touch action occurs according to a touch signal generated on the capacitive touch screen, and communicates the corresponding touch area with the local controller, so that the touch area determines touch action position information according to the touch signal, and the main controller determines the touch position of a user on the capacitive touch screen according to the area information determined by the global controller and the touch action position information determined by the local controller. Therefore, the method provided by the embodiment of the invention controls the capacitive touch screen in different areas, and is suitable for application scenes of large-size screens. In the scheme of the embodiment of the invention, the area information and the touch position information of the touch action are determined by different controllers respectively, so that the operation complexity of each controller is reduced, and furthermore, the local controller is selectively communicated with each touch area through a switch, so that the wiring density in a large-size screen is simplified to a certain extent.
Fig. 7 is a flowchart of a control method of a second capacitive touch screen according to an embodiment of the present invention. The method shown in fig. 7 is executed based on the control device shown in fig. 5, and the processing steps comprise:
step S301: during initialization, the control switch unit is in an open state with respect to the respective switches in the connection path to the local controller.
Step S302: and the switch unit monitors each row of electrode signals and each column of electrode signals of the capacitive touch screen.
And S303, when a touch action exists on the capacitive touch screen, the electrode signal changes on the ITO wiring corresponding to the touch area where the touch action occurs, the operation function in the switch unit operates the electrode signal input by each signal input interface, and the row electrode signal and the column electrode signal of which the variation exceeds a preset threshold value are used as touch control signals and sent to the global controller. Such as AiBjTouch action occurs on the touch area, A on the capacitive touch screeniRegion and BjElectrode information appears on ITO wiring corresponding to the areasThe change of the number, the switch unit determines A through calculationiRegion and BjThe change quantity of the electrode signals of the area exceeds a preset threshold value, the switch unit switches AiRegion and BjElectrode signal of area or AiRegion and BjAnd the electrode signal variation of the area is used as a touch signal and sent to the global controller.
Step S304: and the global controller determines a touch area where the touch action occurs according to the received touch signal.
There are various ways for the global controller to determine the touch area where the touch action occurs, for example, the global controller determines which area has the touch action according to the number of the signal input interface of the switch unit corresponding to the touch signal.
In step S305, the global controller transmits area information of the determined touch area to the main controller.
In step S306, the global controller connects the touch area where the touch action occurs with the local controller.
One possible way for the global controller to switch on the touch area where the touch action occurs with the local controller may be: and the global controller controls the closing of the switch on the connecting path of each row electrode signal output end and each column electrode signal output end of the touch area where the touch action occurs and the local controller.
Another possible way for the global controller to switch on the touch area where the touch action occurs with the local controller may be: and the global controller controls the closing of the switches on the connecting paths of the row electrode signal output end and the column electrode signal output end, the electrode signal variation of which exceeds a preset threshold value, and the local controller.
In another possible embodiment, when the electrode signal emitted from the capacitive touch screen flows to the switch unit, the electrode signal whose electrode signal variation exceeds the preset threshold directly triggers the switch on the relevant path to close.
It should be noted that the sequence between step S306 and step S305 is not distinguished.
In step S307, the local controller determines the touch action position information on the touch area communicated with the local controller.
And step S308, the local controller reports the determined touch action position information to the main controller.
Step S309: and the main controller determines the touch position of the user on the capacitive touch screen according to the area information and the touch action position information.
In a possible mode, the area information reported by the global controller is global coordinate information relative to the capacitive touch screen, that is, the whole capacitive touch screen is located in the same coordinate system, and the global coordinate information determined by the global controller is information determined in the coordinate system where the capacitive touch screen is located; further, the touch action position information reported by the local controller is relative coordinate information relative to the touch area, that is, each touch area in the capacitive touch screen has an independent coordinate system, and the local controller determines the touch action position information in the coordinate system of the touch area corresponding to the touch signal. And the main controller converts the touch action position information reported by the local controller into a global touch position relative to the capacitive touch screen according to the area information reported by the global controller.
In the embodiment of the invention, after the main controller determines the specific position where the touch action occurs, if the touch area corresponding to the touch signal does not receive the touch information again within the preset time, the global controller controls to disconnect the touch area corresponding to the touch signal from the local controller, so that the local controller is ensured to be only communicated with the touch area where the touch action occurs, and is not communicated with the capacitive touch screen when no touch action occurs on the capacitive touch screen.
The embodiment of the present invention further provides a terminal device, where the terminal device includes a capacitive touch screen, and the capacitive touch screen is divided into a plurality of touch areas, and the terminal device of the embodiment of the present invention further includes a control device shown in fig. 1 and 5, and the control device is configured to execute the control method of the capacitive touch screen.
In an embodiment of the present invention, the processing apparatus structure shown in fig. 8 may be used for the global controller, the local controller, and the master controller in the control apparatus shown in fig. 1 and 5. The structure of the controller according to fig. 1 and 5 will be described below by taking the structure of the global controller as an example.
As shown in fig. 8, the processing apparatus may include: at least one processor (processor)401, memory 402, peripheral interface 403, input/output subsystem 404, power lines 405, and communication lines 406.
In fig. 8, arrows indicate that communication and data transfer between components of the computer system are possible, and that the communication and data transfer may be implemented using a high-speed serial bus (high-speed serial bus), a parallel bus (parallel bus), a Storage Area Network (SAN), and/or other suitable communication technology.
The memory 402 may include an operating system 412 and a global controller control routine 422. For example, memory 402 may include high-speed random access memory (high-speed random access memory), magnetic disks, static random access memory (SPAM), Dynamic Random Access Memory (DRAM), Read Only Memory (ROM), flash memory, or non-volatile memory. The memory 402 may store program code for an operating system 412 and a global controller control routine 422, that is, may include various data other than, or in addition to, software modules, instruction set architectures, and the like, required for the operation of the processing device 400. In this case, the access to the memory 402 and other controllers such as the processor 401 and the peripheral interface 406 may be controlled by the processor 401.
The power line 405 may handle all or part of the power supplied to the circuit elements of the device. For example, the power line 405 may include, for example, a power management system, a battery or an Alternating Current (AC) power source for more than one cycle, a charging system, a power failure detection circuit (power failure detection circuit), a power converter or inverter, a power status flag, or any other circuit element for power generation, management, distribution.
The communication line 406 may utilize at least one periodic interface to communicate with other computer systems, such as with a host controller.
The processor 401 may perform various functions of the processing device 400 and process data by executing software modules or an instruction set architecture stored in the memory 402. That is, the processor 401 may be configured to process commands of a computer program by performing basic arithmetic, logic, and input/output operations of a computer system.
The embodiment of fig. 8 is only one example of the processing means 400 in the terminal device, and the processing means 400 may have the following structure or configuration: some of the circuit elements shown in fig. 8 are omitted, additional circuit elements not shown in fig. 8 are further provided, or circuit elements having two or more cycles are combined.
The processing device shown in fig. 8 may be applied as a global controller in the control devices shown in fig. 1 and 5, and may be used to perform the steps to be performed with respect to the global controller in the above-described method embodiments.
Further, the processing device shown in fig. 8 may also be disposed as a main controller, a local controller in the control devices shown in fig. 1 and 5.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functions of the units may be implemented in the same cycle or in multiple cycles of software and/or hardware in practicing the invention.
The cycle embodiments in the present specification are all described in a progressive manner, and the same and similar parts among the cycle embodiments are referred to each other, and each cycle embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one period, or may be distributed on a plurality of period network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort. The foregoing is merely a detailed description of the invention, and it should be noted that modifications and adaptations by those skilled in the art may be made without departing from the principles of the invention, and should be considered as within the scope of the invention.
Claims (8)
1. The control method of the capacitive touch screen is characterized in that the capacitive touch screen is divided into a plurality of touch areas in a coordinate distribution mode; the method comprises the following steps:
the method comprises the following steps that a switch unit monitors each row of electrode signals and each column of electrode signals of the capacitive touch screen;
when the capacitive touch screen has a touch action, the switch unit takes a row electrode signal and a column electrode signal of which the variation of the electrode signal exceeds a preset threshold value as touch signals and sends the touch signals to the global controller;
the global controller determines area information of a touch area corresponding to the touch signal and sends the area information to the main controller;
the global controller controls a touch area corresponding to the touch signal to be connected with a local controller so that the local controller determines touch action position information, and the local controller sends the touch action position information to the main controller;
and the main controller determines the touch position of the user on the capacitive touch screen according to the area information and the touch action position information.
2. The method of claim 1, wherein the area information is global coordinate information with respect to the capacitive touch screen; the touch action position information is relative coordinate information relative to a touch area;
the main controller determines the touch position of the user on the capacitive touch screen according to the area information and the touch action position information, and the method comprises the following steps:
and the main controller converts the touch action position information into a global touch position relative to the capacitive touch screen according to the area information.
3. The method according to claim 1, wherein if the touch area corresponding to the touch signal does not receive the touch signal again within a preset time, the global controller controls to disconnect the touch area corresponding to the touch signal from the local controller.
4. The control device of the capacitive touch screen is characterized in that the capacitive touch screen is divided into a plurality of touch areas in a coordinate distribution mode;
the control device includes: the system comprises a switch unit, a main controller, a global controller and a local controller;
the switch unit comprises a plurality of signal input interfaces; the plurality of signal input interfaces are connected with the signal output ends of each row of electrodes and the signal output ends of each column of electrodes of the capacitive touch screen in a one-to-one correspondence manner;
the switch unit further comprises a first output interface, and the first output interface is connected with the global controller;
the switch unit further comprises a plurality of second signal output interfaces, the plurality of second signal output interfaces are respectively in one-to-one correspondence with the plurality of signal input interfaces, and the plurality of second signal output interfaces are connected with the local controller;
the global controller is connected with the capacitive touch screen and used for receiving a touch signal generated on the capacitive touch screen;
the global controller is further connected with the main controller and used for sending the area information to the main controller after the area information of the touch area corresponding to the touch signal is determined;
the global controller is further used for controlling the touch area corresponding to the touch signal to be communicated with the local controller, so that the local controller determines position information of a touch action and sends the position information to the main controller;
and the main controller determines the touch position of the user on the capacitive touch screen according to the area information and the touch action position information.
5. The device of claim 4, wherein one row electrode signal output is provided for each row electrode of each touch area, and one column electrode signal output is provided for each column electrode of each touch area;
the signal input interfaces are connected with the row electrode signal output end and the column electrode signal output end of each touch area in a one-to-one correspondence mode.
6. The device of claim 4, wherein each row electrode of the capacitive touch screen is provided with a row electrode signal output end, and each column electrode of the capacitive touch screen is provided with a column electrode signal output end;
the plurality of signal input interfaces are connected with the electrode signal output ends of each row and the electrode signal output ends of each column of the capacitive touch screen in a one-to-one correspondence mode.
7. The apparatus of claim 4, wherein a switch is disposed on each of the connection paths of the second signal output interfaces and the local controller;
the switch unit respectively controls the on and off of the switch under the control of a touch signal generated in the global control chip or the capacitive touch screen.
8. A terminal device, comprising: a capacitive touch screen divided into a plurality of touch areas; further comprising a control device according to any one of claims 4 to 7.
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| CN201610891187.8A CN106354354B (en) | 2016-10-12 | 2016-10-12 | Control method and device of capacitive touch screen and terminal equipment |
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| CN201610891187.8A CN106354354B (en) | 2016-10-12 | 2016-10-12 | Control method and device of capacitive touch screen and terminal equipment |
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| CN106354354A CN106354354A (en) | 2017-01-25 |
| CN106354354B true CN106354354B (en) | 2020-10-02 |
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| WO2018191909A1 (en) * | 2017-04-20 | 2018-10-25 | 华为技术有限公司 | Signal reporting method and apparatus |
| CN110007811A (en) * | 2019-03-29 | 2019-07-12 | 京东方科技集团股份有限公司 | A kind of method, apparatus, computer storage medium and terminal handling touch information |
| CN111552415B (en) * | 2020-04-30 | 2023-03-31 | 中国航空无线电电子研究所 | High-safety-level touch device and method for airplane |
| CN111880676B (en) * | 2020-06-22 | 2022-03-15 | 深圳市鸿合创新信息技术有限责任公司 | Partition touch control method and device, electronic equipment and storage medium |
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| CN103927042A (en) * | 2013-10-31 | 2014-07-16 | 上海中航光电子有限公司 | Touch point positioning method and device and electronic device |
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