WO2017031910A1 - 一种用于触控屏的防误触方法及系统 - Google Patents

一种用于触控屏的防误触方法及系统 Download PDF

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Publication number
WO2017031910A1
WO2017031910A1 PCT/CN2016/000417 CN2016000417W WO2017031910A1 WO 2017031910 A1 WO2017031910 A1 WO 2017031910A1 CN 2016000417 W CN2016000417 W CN 2016000417W WO 2017031910 A1 WO2017031910 A1 WO 2017031910A1
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Prior art keywords
touch screen
touch
contact
area
false
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PCT/CN2016/000417
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English (en)
French (fr)
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李睿
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李睿
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Publication of WO2017031910A1 publication Critical patent/WO2017031910A1/zh

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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

Definitions

  • the invention relates to an anti-missing technology of a touch screen, in particular to an anti-missing method and system for a user to operate on a touch screen by using a stylus.
  • the method of preventing accidental touch is usually for the touch operation of the touch screen edge when the mobile terminal with the touch screen is hand-held.
  • An anti-missing system of the disclosure of 103902074A which is applied to an electronic device, the electronic device comprising a display screen, the system comprising: a setting module, configured to determine the designation of the anti-missing touch in the display screen a determining unit, configured to determine whether the touch event is a single touch or a multi-touch when a touch event occurs in the designated area; and the response module is configured to: when the touch event is multi-touch Ignoring the touch points occurring in the designated area, responding to other touch points except the touch points in the designated area; and the response module is also used for single touch in the touch event Respond to the touch event.
  • the technical problem to be solved is that the display screen of the electronic device is too large and the frame is too small, and the action of preventing the user from holding the electronic device is recognized as a touch operation.
  • a method and device for preventing accidental touch of a touch screen which is disclosed in the technical field of electronic products, is used to solve the prior art, because the user touches a command that is not intended by the user due to a false touch when using the terminal.
  • the problem of interrupted operation includes: detecting, by an anti-missing protection mechanism, whether a touch command acts within an effective touch range, and if not within the effective touch range, does not react to the touch command; Under the anti-touch protection mechanism, the effective touch range of the touch screen is turned on, and other areas except the effective touch range are closed, and the terminal receives a touch instruction of the user within the effective touch range. Perform the corresponding operation.
  • the method and device for preventing an erroneous touch of a mobile terminal comprising: receiving, by the touch panel IC layer, a touch command of the user, and reporting the contact on the touch track corresponding to the touch command to the driving layer;
  • the driving layer determines whether the starting point of the touch track falls within the preset anti-missing area; when the starting point of the touch track falls into the preset anti-missing area, the driving layer acquires the touch track, and the touch after the starting point
  • the distance between the point and the starting point is subjected to an anti-error touch processing according to the distance.
  • the technical problem to be solved by the present invention is to provide an anti-missing method and system for a touch screen, which can simply and reliably isolate the false touch on the touch screen when the user uses the stylus.
  • an anti-missing method for a touch screen comprising the following steps:
  • the touch screen contact may cause the touch screen to malfunction, thereby affecting the normal command operation of the stylus on the touch screen.
  • the invention combines with the touch screen by a suitable method to form an anti-missing area on the touch screen, so that the area where the palm touches the touch screen mainly falls within the anti-missing area, and finally the wrong way is touched by a suitable method.
  • the mis-contacts in the area are isolated so as not to affect the normal operation of the touch screen.
  • the palm of the hand-held stylus will form a movement on the touch screen, and the anti-missing area of the present invention can be moved according to the movement of the palm, that is, the movement of the mis-contact, thus It can reliably and automatically adapt to isolate the false contacts generated by the human hand.
  • the shape, size, and position of the accidental touch area are set according to the user.
  • the user can set the size, shape and position of the initial touch area, and adjust the size, shape and position of the touch area according to the needs during use.
  • the shape of the false touch region is circular, rectangular or elliptical.
  • the false touch area required by the present invention not only covers all the wrong contacts, but also does not affect the operation of the touch screen, so the optimal shape of the false touch area is Round, rectangular or elliptical.
  • the mis-touch area is enlarged by a magnitude of the offset R b to form a false touch detection area, and the contact appearing in the false touch detection area is an incorrect contact.
  • the contact on the touch screen originating from the false touch area is an incorrect contact.
  • the position before the contact is moved can be known. If the original position of the contact is in the wrong contact area, then these contacts should belong to the isolated false contact. Even if these wrong contacts move, the system still determines They are Mis-contact.
  • a threshold Rr which is a non-missing contact.
  • the contact of the distance of the false touch area beyond a threshold R r can be recognized as the touch of the stylus, and these non-false contacts can always be touched on the touch screen. Whether or not these contacts will eventually fall into the area of the touch.
  • the false touch area does not move.
  • the center of the false touch area moves to the center of the minimum circle and the minimum distance, and the false touch area encloses the minimum circle: the diameter of the smallest circle And the position can be determined according to the coordinate distribution and shape of all the wrong contacts;
  • the judgment and operation are performed by the position coordinate information of the contact.
  • the position coordinate information of the contact can be obtained by the existing touch screen technology, and will not be described in detail.
  • the judgment and operation are performed by the coordinates and shape information of the contacts.
  • the contacts produced by the human hand are obviously shaped, and the positional coordinate information and shape information of the contacts can be obtained by the existing touch screen technology, and will not be described in detail.
  • step (3) and the operation to judge the contact circle analog R t by the position coordinates and the radius of contact surrounded by contacts.
  • step (3) when the false touch area moves to the boundary of the touch screen, if there is no wrong contact on the touch screen, the false touch area is minimized at the boundary or hidden.
  • the center of the false touch area moves to the center of the minimum circle and the maximum distance, and the false touch area can be Surround the above minimum circle; if there is no wrong contact on the touch screen, the false touch area is minimized at the boundary or hidden.
  • the false touch area can be displayed on the touch screen, and the display form can be changing the color of the false touch area or enclosing the false touch area in a line manner, so that the user can see the virtual touch screen.
  • the mis-touch area makes it easy for the user to judge whether the position, size and shape of the mis-touch area are appropriate.
  • another technical solution of the present invention is: an anti-missing method for a touch screen
  • the false touch area is formed by an area covered by a partition plate placed on the touch screen for supporting the human hand:
  • the false touch area can move on the touch screen as the spacer moves.
  • the hand side of the pen is often supported by the touch screen, which makes it more comfortable and smooth when using the stylus to write or draw, but at the same time due to the palm and
  • the touch screen contact may cause the touch screen to malfunction, thereby affecting the normal command operation of the stylus on the touch screen.
  • the invention adopts a combination of hardware and software to isolate the false touch operation, and the isolation board can isolate the signal transmission between the palm or the finger and the touch screen, so that the human hand can both support the touch screen and prevent the touch.
  • the touch of the screen does not affect the normal operation of the touch screen.
  • the palm of the hand-held stylus will form a movement on the touch screen, and the spacer of the present invention can be moved according to the movement of the palm, so that the reliable and automatic adaptation will be generated by the human hand. The wrong contacts are isolated.
  • the spacer is a non-conductive material board capable of isolating signal transmission between a human hand and a touch screen.
  • the isolation plate is a conductive material plate, and when the finger or the palm is placed on the isolation plate, the isolation plate forms a large-area contact on the touch screen, and the computer terminal with the touch screen is based on the size of the area. It is judged that the large-area contact is an incorrect contact and is isolated.
  • the conductive material board can also be electrically connected to the metal casing of the computer terminal, the human body or the earth, and can pass a small AC signal. Similarly, the isolation plate forms a large-area contact on the touch screen to achieve the same isolation effect. .
  • At least one of the two contact surfaces of the touch-sensitive area suggesting plate contacting the object is provided with a conductive coating, and when the finger or the palm is placed on the separating plate, the conductive coating on the separating plate is A large-area contact is formed on the touch screen, and the computer terminal with the touch screen judges that the large-area contact is an incorrect contact and isolates it according to the size of the area.
  • the spacer is transparent or translucent, so that the user and the spacer can see the content drawn under the board, even if the board covers the touch screen, it does not affect the use.
  • the mis-touch area suggesting plate is a lightweight material having a density of 3 ⁇ 10 3 kg/m 3 or less .
  • the separator has a thickness of 0.2 to 10 mm.
  • the dielectric constant is different, and the thickness is also different.
  • At least one of the two contact faces of the mis-touch area suggesting plate that is in contact with the object is a smooth surface.
  • the smooth surface is in contact with the touch screen and is easy to move on the touch screen to facilitate the user to operate anywhere on the touch screen.
  • a contact detecting unit for detecting a change in a contact
  • a contact judging unit for judging whether the contact is a wrong contact
  • Isolation unit for isolating all mis-contact touches.
  • the invention forms a false touch area on the touch screen by adopting software and hardware methods, so that the area where the palm touches the touch screen mainly falls within the anti-missing area, and finally the false contact in the false touch area is isolated.
  • the palm of the hand-held stylus will form a movement on the touch screen, and the anti-missing area of the present invention can be moved according to the movement of the palm, that is, the movement of the wrong contact, thereby being reliable.
  • the automatic adaptation will isolate the false contacts generated by the human hand.
  • 1 is a flow chart of the method for preventing mis-touch in the first embodiment.
  • Embodiments 2 is a flow chart of the method for preventing mis-touching of Embodiments 2 to 6.
  • FIG. 3 is a schematic diagram of the mis-contact on the touch screen in the area of the touch.
  • Figure 4 is a schematic diagram of the mis-touch area not completely enclosing the mis-contact.
  • Figure 5 is a schematic illustration of the shortest distance traveled by the mis-touch area to the smallest circle that encloses all of the mis-contacts.
  • FIG. 6 is a schematic diagram of the false touch area at the edge of the touch screen.
  • Figure 7 is a schematic illustration of the reduction of false contacts in the area of the false touch.
  • Figure 8 is a schematic illustration of the maximum distance traveled by the mis-touch area to the smallest circle that encloses all of the mis-contacts.
  • FIG. 9 is a schematic view of a separator of Embodiment 2.
  • Figure 10 is a schematic view of the spacer of Embodiment 3.
  • FIG. 11 is a schematic view of the isolation panel of the embodiment 4 on the touch screen.
  • FIG. 12 is a schematic view of the spacer of Embodiment 5 on a touch screen.
  • FIG. 13 is a schematic diagram of the cooperation between the human hand and the false touch area on the touch screen in Embodiment 1.
  • FIG. 14 is a schematic diagram of the cooperation between the hands of Embodiments 2 to 5 and the isolation panel on the touch screen.
  • An anti-missing method for a touch screen which can be used in a computer terminal of a large screen such as a tablet computer.
  • the anti-missing method of the present invention mainly solves the problem of the user's wrong touch on the touch screen when the user uses the stylus to perform writing or drawing operations.
  • the hand side of the pen is often supported by the touch screen, so that the stylus is used. It is more comfortable and smooth when writing or drawing, but at the same time, the touch screen will be mishandled due to the contact between the palm and the touch screen, thus affecting the normal command operation of the stylus on the touch screen.
  • the anti-missing method of the touch screen can be implemented by the touch screen driver layer software and hardware of the computer terminal, the system layer software and the application layer software are separately implemented or jointly implemented, as shown in FIG. 1 and FIG. 13 , and the specific anti-missing method includes the following steps. :
  • the shape, size and position of the false touch area 2 can be set by the user according to the user setting, and the size, shape and position of the initialized false touch area 2 can be set, and the size, shape and size of the false touch area 2 can be adjusted according to requirements during use. position;
  • the shape of the false touch area 2 is circular, rectangular or elliptical. According to the distribution of the false contacts formed on the touch screen by the palm, the false touch area 2 required by the present invention needs to wrap all the wrong contacts without Affecting the operation of the touch screen, so the optimal shape of the false touch area 2 is circular, rectangular or elliptical;
  • the touched area 2 can be displayed on the touch screen 1.
  • the display may be in the form of changing the color of the false touch area 2 or enclosing the false touch area 2 in a line manner, so that the user can view the touch screen 1
  • To the virtual mis-touch area 2 it is convenient for the user to judge whether the position, size and shape of the false touch area 2 are appropriate; in order not to affect the normal display of the touch screen 1, when the anti-missing system is not enabled, the false touch area 2 can be Hidden or hung on the side of the touch screen, when the need to enable, the wrong contact area 2 can be retrieved by software;
  • the mis-touch area 2 can be moved to the appropriate position of the touch screen 1, and then the palm 13 of the pen is placed in the false touch area 2, such as As shown in FIG. 3, the false contact 3 at this time falls within the false touch area 2;
  • the change monitoring of the contact on the touch screen 1 is realized by continuous detection of a certain time interval or triggering by a touch event.
  • the change of the contact includes a change of the position of the contact, an increase of the contact, and a disappearance of the contact; generally, the detection frequency of the touch screen is 60 Hz-200 Hz;
  • the determination of the wrong contact can be achieved by the following methods:
  • the contact on the touch screen originating from the false touch area 2 is a false contact; according to the track of the contact, the position before the contact is moved can be known, if the original position of the contact is In the area 2, the contacts should belong to the isolated false contacts. Even if these wrong contacts move, the system still recognizes them as false contacts;
  • the position determination of the contact can be realized by the following methods:
  • the false touch area 2 can completely surround all the false contacts 3, the false touch area 2 does not move;
  • the diameter and position of the minimum circle 5 can be determined according to the coordinate distribution and shape of all the false contacts 3; if the false touch area 2 is not Being able to surround the minimum circle 5, reporting information indicating that the user can modify the size or shape of the false touch area 2;
  • the center of the false touch area 2 is toward the center of the minimum circle.
  • the path 7 moves the maximum distance (two center distance + two circle radius difference), and the false touch area 2 can surround the above minimum circle:
  • the false touch area 2 is minimized at the boundary or hidden;
  • the anti-missing area 2 is formed on the touch screen, and the area where the palm touches the touch screen mainly falls in the anti-missing area 2, and finally the wrong contact in the false touch area 2 is isolated by a software method.
  • the palm of the hand-held stylus will form a movement on the touch screen, and the anti-missing area 2 of the present invention can be moved according to the movement of the palm, that is, the movement of the wrong contact. Therefore, it is possible to reliably and automatically adapt to isolate the false contacts generated by the human hand.
  • An anti-missing method for a touch screen which can be used in a computer terminal of a large screen such as a tablet computer.
  • the anti-missing method of the present invention mainly solves the problem of the user's wrong touch on the touch screen when the user uses the stylus to perform writing or drawing operations.
  • the hand side of the pen is often supported by the touch screen, so that the stylus is used. It is more comfortable and smooth when writing or drawing, but at the same time, the touch screen will be mishandled due to the contact between the palm and the touch screen, thus affecting the normal command operation of the stylus on the touch screen.
  • the anti-missing method of the touch screen is physically separated by the isolation board, and can isolate the signal transmission between the palm or the finger and the touch screen.
  • the partitioning plate 8 is a transparent or translucent plastic plate; the plastic plate is light in weight, convenient to carry, and low in cost, and the plastic plate can be a high permeability material such as acrylic; the user can pass through the transparent or half
  • the transparent isolation board sees what is drawn under the board, even if the isolation board covers the touch screen, it will not affect the use.
  • the spacer 8 can also be made transparent or translucent when in use by other means.
  • At least one of the two contact surfaces of the isolation panel 8 and the touch screen and the hand is a smooth surface, and the smooth surface is in contact with the touch screen, and is easy to move on the touch screen, so as to facilitate the user to touch
  • the screen operates anywhere.
  • the separator has a cylindrical shape and a diameter of 30 mm to 100 mm.
  • the thickness of the separator is 0.2 to 10 mm, and the dielectric constant of the material of the separator is different, and the thickness is also different. As shown in FIG.
  • the anti-missing method of the isolation board includes the following steps:
  • the false touch area is formed by an area covered by a partition plate placed on the touch screen for supporting the human hand;
  • the false touch area can move on the touch screen as the spacer moves.
  • An anti-missing method for a touch screen which can be used in a computer terminal of a large screen such as a tablet computer.
  • the anti-missing method of the present invention mainly solves the problem of the user's wrong touch on the touch screen when the user uses the stylus to perform writing or drawing operations.
  • the hand side of the pen is often supported by the touch screen, which makes it more comfortable and smooth when using the stylus to write or draw, but at the same time due to the palm and
  • the touch screen contact may cause the touch screen to malfunction, thereby affecting the normal command operation of the stylus on the touch screen.
  • the anti-missing method of the touch screen is physically separated by the isolation board. As shown in FIG.
  • the partitioning plate 8 is a transparent or translucent plastic plate; the plastic plate is light in weight, convenient to carry, and low in cost. The user can see what is drawn under the board through the transparent or translucent isolation board, even if the isolation board is covered on the touch screen, it will not affect the use.
  • the separator can also be made transparent or translucent when used by other means.
  • the partitioning plate 8 is provided with a through groove 9, the number and shape of the through groove 9 can be arbitrarily set, and the shape of the separating plate 8 can also be arbitrarily set, so that the separating plate 8 can be used as a ruler or a curved ruler. Use the tip of the stylus.
  • At least one of the two contact surfaces of the isolation panel 8 and the touch screen and the hand is a smooth surface, and the smooth surface is in contact with the touch screen, and is easy to move on the touch screen, so as to facilitate the user to touch
  • the screen operates anywhere.
  • the separator 8 has a thickness of 0.2 to 10 mm, and the dielectric constant of the material of the separator 8 is different, and the thickness is also different.
  • the spacer 8 prevents erroneous operation of the touch screen 1 by the palm 13 .
  • the anti-missing method of the isolation board includes the following steps:
  • the false touch area is formed by an area covered by a partition plate placed on the touch screen for supporting the human hand;
  • the false touch area can move on the touch screen as the spacer moves.
  • An anti-missing method for a touch screen which can be used in a computer terminal of a large screen such as a tablet computer.
  • the anti-missing method of the present invention mainly solves the problem of the user's wrong touch on the touch screen when the user uses the stylus to perform writing or drawing operations.
  • the hand side of the pen is often supported by the touch screen, which makes it more comfortable and smooth when using the stylus to write or draw, but at the same time due to the palm and
  • the touch screen contact may cause the touch screen to malfunction, thereby affecting the normal command operation of the stylus on the touch screen.
  • the anti-missing method of the touch screen is separated by the interaction between the isolation board and the touch screen.
  • the insulation board is a transparent or translucent plastic board.
  • the plastic board is light in weight, convenient to carry, and low in cost.
  • the plastic board can be a high permeability material such as acrylic; the user can see the board through the transparent or translucent insulation board. The content drawn below, even if the isolation board is covered on the touch screen, will not affect the use.
  • the separator can also be made transparent or translucent when used by other means. As shown in FIG. 11 , at least one of the two contact surfaces of the isolation plate 8 in contact with the object is provided with a conductive coating 10; in this embodiment, only one side in contact with the touch screen is provided with a conductive coating. 10.
  • the conductive coating 10 is electrically connected to the metal casing 12 of the computer terminal through the wire 11.
  • the connection between the conductive coating 10 and the so-called earth can pass a small alternating current signal, and after the large-area conductive coating 10 contacts the touch screen 1, a large-area contact signal is given to the touch screen, which is equivalent to informing the touch.
  • the screen is the location of a large isolation board, not the position of the real pen tip writing, so the computer terminal will isolate the wrong contact, leaving no writing marks on the position of the isolation board.
  • the separator has a cylindrical shape and a diameter of 30 mm to 100 mm.
  • the thickness of the separator is 0.2 to 5 mm, and the dielectric constant of the material of the separator is different, and the thickness is also different.
  • the spacer 8 Even if the spacer 8 is not connected to the so-called ground through the wire 11, when the hand is placed on the spacer 8, the spacer 8 is connected to the so-called earth through the communication with the minute AC signal of the hand, and plays the same role. .
  • the stylus 14 when the stylus 14 is operated on the touch screen 1 , the side of the palm 13 of the pen is often supported by the touch screen 1 , thereby writing or drawing with the stylus. It is more comfortable and smooth, while the spacer 8 prevents the palm 13 from erroneously operating the touch screen 1.
  • the anti-missing method of the isolation board includes the following steps:
  • the false touch area is formed by an area covered by a partition plate placed on the touch screen for supporting the human hand;
  • the false touch area can move on the touch screen as the spacer moves.
  • An anti-missing method for a touch screen which can be used in a computer terminal of a large screen such as a tablet computer.
  • the anti-missing method of the present invention mainly solves the problem of the user's wrong touch on the touch screen when the user uses the stylus to perform writing or drawing operations.
  • the hand side of the pen is often supported by the touch screen, which makes it more comfortable and smooth when using the stylus to write or draw, but at the same time due to the palm and
  • the touch screen contact may cause the touch screen to malfunction, thereby affecting the normal command operation of the stylus on the touch screen.
  • the anti-missing method of the touch screen is separated by the interaction between the isolation board and the touch screen.
  • the isolating plate is a transparent or translucent conductive material plate; the user can see the content under the plate through the transparent or translucent insulating plate, even if the insulating plate covers the touch screen, it does not affect the use.
  • the isolation plate 8 is electrically connected to the metal casing 12 of the computer terminal through the wire 11, and the connection between the so-called earth can pass through a small alternating current signal, and after a large-area isolation plate is in contact with the touch screen, A large area contact signal to the touch screen is equivalent to telling the touch screen that there is a large isolation board position, not the position of the real pen tip writing, so that the computer terminal will isolate the wrong contact, not in the isolation board. The location leaves a trace of writing.
  • the separator has a cylindrical shape and a diameter of 30 mm to 100 mm.
  • the separator has a thickness of 0.2 to 10 mm.
  • the anti-missing method of the isolation board includes the following steps:
  • the false touch area is formed by an area covered by a partition plate placed on the touch screen for supporting the human hand;
  • the false touch area can move on the touch screen as the spacer moves.
  • An anti-missing system for a touch screen which can be used in a computer terminal of a large screen such as a tablet computer.
  • the anti-missing method of the present invention mainly solves the problem of the user's wrong touch on the touch screen when the user uses the stylus to perform writing or drawing operations.
  • the hand side of the pen is often supported by the touch screen, which makes it more comfortable and smooth when using the stylus to write or draw, but at the same time due to the palm and
  • the touch screen contact may cause the touch screen to malfunction, thereby affecting the normal command operation of the stylus on the touch screen.
  • the anti-missing system of the touch screen can be implemented by the touch screen driver layer software and hardware of the computer terminal, and the system layer software and the application layer software are separately implemented or implemented together.
  • Anti-missing systems for touch screens include: a contact area formed on the touch screen, a contact detecting unit for detecting a change of the contact, a contact judging unit for judging whether the contact is a false contact, and adjusting the position of the mistouched area according to the position of the miscontact set
  • the mis-touch area positioning unit and the isolation unit for isolating the false contact touch of the false touch area.
  • the shape, size and position of the accidental touch area can be set by the user according to the user's settings.
  • the size, shape and position of the initial touch area can be set, and the size, shape and position of the touch area can be adjusted according to requirements during use.
  • the shape of the touched area is circular, rectangular or elliptical. According to the distribution of the wrong contact formed on the touch screen by the palm, the false touch area required by the present invention not only covers all the wrong contacts, but also does not affect the touch. The operation of the screen is controlled, so the optimal shape of the touch area is circular, rectangular or elliptical.
  • the false touch area can be displayed on the touch screen, and the display form can be changing the color of the false touch area or enclosing the false touch area in a line manner, so that the user can see the virtual false touch on the touch screen.
  • the area is convenient for the user to judge whether the position, size and shape of the false touch area are appropriate; in order not to affect the normal display of the touch screen, the false touch area can be hidden or suspended on the side of the touch screen when the anti-missing system is not enabled. On the side, when you need to enable it, you can use the software to retrieve the false touch area.
  • the contact detecting unit monitors the change of the contact on the touch screen by continuously detecting the time interval or triggering the touch event, and the change of the contact includes the position change of the contact, the increase and contact of the contact.
  • the disappearance of the point usually the scanning frequency of the touch screen is 60Hz-200Hz.
  • the contact judging unit judges whether the contact is a mis-contact according to the size and position of the mis-touch area and the position of the touch point, and the determination of the mis-contact can be realized by the following methods:
  • the mis-touch area is enlarged by a magnitude Rb and forms a false touch detection area.
  • the contact appearing in the false touch detection area is a false contact
  • the offset Rb is a reference value
  • 0.5m/s is the speed at which the human finger/palm moves.
  • the position determination of the contact can be realized by the following methods.
  • the mis-touch area positioning unit can adjust the position of the false touch area with the position of all the wrong contacts:
  • the center of the false touch area moves to the center of the minimum circle by a minimum distance (two center distances - two circle radius differences), and the false touch area is wrapped around the above
  • the smallest circle; the diameter and position of the smallest circle can be determined according to the coordinate distribution and shape of all the wrong contacts; if the false touch area cannot surround the minimum circle, a message is reported, prompting the user to modify the size or shape of the false touch area.
  • the center of the false touch area moves to the center of the minimum circle by the maximum distance (two center distance + two circle radius) Poor), and the mis-touch area can surround the above minimum circle: if there is no wrong contact, the false touch area is minimized at the boundary or hidden.
  • the isolation unit is used to isolate the touch of all mis-contacts.
  • An anti-missing area is formed on the touch screen, so that the area where the palm touches the touch screen mainly falls within the anti-missing area, and finally the wrong contact in the mis-touch area is isolated by the software method, thereby not affecting The normal operation of the touch screen.
  • the palm of the hand-held stylus will form a movement on the touch screen, and the anti-missing area of the present invention can be moved according to the movement of the palm, that is, the movement of the mis-contact, thus It can reliably and automatically adapt to isolate the false contacts generated by the human hand.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

一种用于触控屏的防误触方法，包括以下步骤：（1）在触控屏（1）上形成一个误触区域（2）；（2）一旦触控屏（1）上有触点发生变化；（3）根据误触区域（2）的大小和位置以及触控点的位置判断触点是否属于误触点（3）；（4）误触区域（2）的位置随着所有误触点（3）的位置做调整；（5）隔离所有误触点（3）的触控。误触区域（2）可以由软件或硬件实现，防误触区域（2）可以根据手掌（13）的移动即误触点（3）的移动而移动，因此能够可靠且自动适应将由人手产生的误触点（3）进行隔离。

Description

一种用于触控屏的防误触方法及系统 技术领域
本发明涉及触控屏的防误触技术，尤其是针对用户在利用触控笔在触控屏上操作时的防误触方法及系统。
背景技术
目前防误触的方法通常是针对手持带触控屏的移动终端时，对触控屏边缘的误触操作。如：
公开号为103902074A的一种防误触控的系统，应用于电子装置中，所述电子装置包括显示屏，该系统包括：设置模块，用于在所述显示屏中确定防误触控的指定区域；判断模块，用于在所述指定区域发生触控事件时，确定该触控事件是单点触控还是多点触控；响应模块，用于在该触控事件是多点触控时，忽略在该指定区域内发生的触控点，响应除该指定区域内的触控点以外的其他触控点；及所述的响应模块，还用于在该触控事件是单点触控时，响应该触控事件。其所要解决的技术问题是可在电子装置的显示屏过大而边框过小时，防止用户手握电子装置的动作被识别为触控操作。
公开号为104345947A的一种防止误触碰触摸屏的方法和装置，应用于电子产品技术领域，用于解决现有技术由于用户在使用终端时由于误触碰产生非用户意愿的触碰指令，导致操作中断的问题。本发明提供的技术方案包括：通过防误触碰保护机制检测触碰指令是否作用在有效触碰范围内，如果未作用在所述有效触碰范围内，不对所述触碰指令进行反应；在所述防误触碰保护机制下，开启所述触摸屏的有效触碰范围，关闭除所述有效触碰范围的其他区域，所述终端接收用户在所述有效触碰范围内的触碰指令并执行对应操作。
公开号为104635985A的一种移动终端防误触控方法及装置，其方法包括：通过触屏IC层接收用户的触控指令，将触控指令对应的触摸轨迹上的触点上报给驱动层；通过驱动层判断触摸轨迹的起始点是否落入预设的防误触区；当触摸轨迹的起始点落入预设的防误触区时，由驱动层获取触摸轨迹上，起始点之后的触点与所述起始点之间的距离，根据距离进行防误触控处理。
随着越来越多的大屏幕移动终端(电容屏手机，平板电脑)的出现，人们对触控笔的关注与需求也越来越大。人们对于在大屏幕终端的书写画画要求就更为迫切。由于目前的触控屏大部分为电容屏，所以手指，手掌和笔尖碰触到电容屏时，都会留下触控痕迹。当人们使用触控笔在大屏幕电脑终端的触控屏上书写时，不免需要手掌放在触控屏上以便容易书 写，所以在触控屏上书写和画画时的手掌防误触功能就十分重要。
发明内容
本发明所要解决的技术问题是提供一种用于触控屏的防误触方法及系统，能够对用户使用触控笔时在触控屏上的误触进行简单可靠的隔离。
为解决上述技术问题，本发明的技术方案是：一种用于触控屏的防误触方法，包括以下步骤：
(1)在触控屏上形成一个误触区域；
(2)一旦触控屏上有触点发生变化；
(3)根据误触区域的大小和位置以及触控点的位置判断触点是否属于误触点；
(4)误触区域的位置随着所有误触点的位置做调整；
(5)隔离所有误触点的触控。
人们通过触控笔在触控屏上操作指令时，握笔的手侧面往往会以触控屏作为承托，从而在使用触控笔写字或画画时更舒适和流畅，但是同时由于手掌与触控屏接触会使触控屏发生误操作，从而影响触控笔在触控屏上的正常指令操作。本发明通过合适的方法与触控屏结合，在触控屏上形成防误触区域，使手掌与触控屏接触的区域主要落在防误触区域内，最后通过合适的方法将在误触区域内的误触点进行隔离，从而不影响触控屏的正常操作。另外，根据触控笔书写或绘画的操作习惯，手持触控笔的手掌会在触控屏上形成移动，本发明的防误触区域可以根据手掌的移动即误触点的移动而移动，因此能够可靠且自动适应将由人手产生的误触点进行隔离。
作为改进，所述步骤(1)中，误触区域的形状、大小和位置根据用户设定。用户可以设定初始化的误触区域的大小、形状和位置，也可以在使用过程中根据需求调整误触区域的大小、形状和位置。
作为改进，所述步骤(1)中，误触区域的形状为圆形、长方形或椭圆形。根据手掌在触控屏上形成的误触点的分布，本发明要求的误触区域既要包住所有的误触点，又不影响触控屏的操作，所以误触区域的最优形状为圆形、长方形或椭圆形。
作为改进，所述步骤(3)中，误触区域以一个偏量Rb的大小扩大并形成一个误触检测区域，出现在误触检测区域里的触点为误触点。
作为改进，所述步骤(3)中，根据触点的移动轨迹，触控屏上来源于误触区域内的触点为误触点。根据触点的轨迹可以知道触点移动前的位置，若触点的原始位置在误触区域内，那么这些触点应该属于被隔离的误触点，即使这些误触点移动了，系统仍然认定他们为 误触点。
作为改进，有触点在误触区域外，且距离误触区域的边界超过一个阀值Rr，该触点为非误触点。根据触控笔的操作习惯，距离误触区域的边界超过一个阀值Rr的触点可被认定为触控笔的触控，这些非误触点在触控屏上永远可实现触控，无论这些触点最终是否会落入误触区域里。
作为改进，所述步骤(4)中，若所有误触点都在误触区域内，则误触区域不动。
作为改进，所述步骤(4)中，
(a)如果误触区域不能完全覆盖包围所有误触点的最小圆，则误触区域的中心向上述最小圆的圆心移动最小距离，并且使误触区域包住上述最小圆：最小圆的直径和位置可以根据所有误触点的坐标分布和形状来确定；
(b)若误触区域不能够包围所述最小圆，则报告信息，提示用户可以修改误触区域的大小或形状。
作为改进，所述步骤(3)和(4)中，通过触点的位置坐标信息来进行判断和操作。触点的位置坐标信息可通过现有触控屏技术得到，不再详细叙述。
作为改进，所述步骤(3)和(4)中，通过触点的坐标和形状信息来进行判断和操作。由人手产生的触点显然是有形状的，触点的位置坐标信息和形状信息可通过现有触控屏技术得到，不再详细叙述。
作为改进，所述步骤(3)中，通过触点的位置坐标和包围触点的半径为Rt的模拟触点圆来进行判断和操作。
作为改进，所述步骤(3)中，当误触区域移动到触控屏的边界时，若触控屏上没有任何误触点时，误触区域被极小化在边界或者隐藏。
作为改进，当误触区域移动到触控屏的边界，且包围所有误触点的最小圆半径变小时，误触区域的中心向上述最小圆的圆心移动最大的距离，并且使误触区域可以包围上述最小圆；若触控屏上没有任何误触点时，误触区域被极小化在边界或者隐藏。
作为改进，所述误触区域能够在触控屏上显示出来，显示的形式可以是改变误触区域的颜色或以线条方式将误触区域围闭，这样用户就可以在触控屏看到虚拟的误触区域，便于用户判断误触区域的位置、大小和形状是否合适。
为解决上述技术问题，本发明另一技术方案是：一种用于触控屏的防误触方法，
(1)在触控屏上形成一个用于隔离由人手形成的误触点的误触区域；
(2)该误触区域由放置在触控屏上用于承托人手的隔离板覆盖的区域形成：
(3)该误触区域能够随隔离板的移动而在触控屏上移动。
人们通过触控笔在触控屏上操作指令时，握笔的手侧面往往会以触控屏作为承托，从而在使用触控笔写字或画画时更舒适和流畅，但是同时由于手掌与触控屏接触会使触控屏发生误操作，从而影响触控笔在触控屏上的正常指令操作。本发明采用硬件和软件结合的方式对误触操作进行隔离，隔离板能够隔离手掌或者手指与触控屏之间信号传递，使人手既能够以触控屏作为承托，又能够防止对触控屏的误触，从而不影响触控屏的正常操作。另外，根据触控笔书写或绘画的操作习惯，手持触控笔的手掌会在触控屏上形成移动，本发明的隔离板可以根据手掌的移动而移动，因此能够可靠且自动适应将由人手产生的误触点进行隔离。
作为改进，所述隔离板为非导电材料板，所述隔离板能够隔离人手与触控屏之间信号传递。
作为改进，所述隔离板为导电材料板，当手指或者手掌放在隔离板上时，隔离板会在触控屏上形成一个大面积的触点，带有触控屏的电脑终端根据面积大小判断该大面积的触点为误触点并将其隔离。导电材料板也可以与电脑终端的金属外壳、人体或者大地电性连接，能通过微小的交流信号，同样，隔离板会在触控屏上形成一个大面积的触点，以达到相同的隔离效果。
作为改进，所述的误触区域提示板与物体接触的两个接触面中，至少一个接触面设有导电涂层，当手指或者手掌放在隔离板上时，隔离板上的导电涂层会在触控屏上形成一个大面积的触点，带有触控屏的电脑终端根据面积大小判断该大面积的触点为误触点并将其隔离。
作为改进，所述隔离板为透明或半透明件，这样用户和透过隔离板可以看到板下所画的内容，即使隔离板覆盖在触控屏上，但是也不会影响使用。
作为改进，所述的误触区域提示板为轻质材料件，其密度为小于等于3×103kg/m3。
作为改进，所述隔离板的厚度为0.2～10mm。对应隔离板材料的介电常数不同，厚度也有相应的不同。
作为改进，所述误触区域提示板与物体接触的两个接触面中，至少一个接触面为光滑面。这个光滑面与触控屏接触，容易在触控屏上移动，以方便用户在触控屏任何位置操作。
为解决上述技术问题，本发明另一技术方案是：
在触控屏上形成的误触区域；
用于检测触点变化的触点检测单元；
用于判断触点是否误触点的触点判断单元；
根据误触点集的位置调整误触区域位置的误触区域定位单元；
用于隔离所有误触点触控的隔离单元。
本发明与现有技术相比所带来的有益效果是：
本发明通过采用软件和硬件的方法在触控屏上形成误触区域，使手掌与触控屏接触的区域主要落在防误触区域内，最后将误触区域内的误触点进行隔离，从而不影响触控屏的正常操作。根据触控笔书写或绘画的操作习惯，手持触控笔的手掌会在触控屏上形成移动，本发明的防误触区域可以根据手掌的移动即误触点的移动而移动，因此能够可靠且自动适应将由人手产生的误触点进行隔离。
附图说明
图1为实施例1防误触方法流程图。
图2为实施例2至6防误触方法流程图。
图3为触控屏上误触点在误触区域内的示意图。
图4为误触区域没有完全包住误触点的示意图。
图5为误触区域向包住所有误触点的最小圆移动最短距离的示意图。
图6为误触区域位于触控屏边缘的示意图。
图7为误触区域内误触点减少的示意图。
图8为误触区域向包住所有误触点的最小圆移动最大距离的示意图。
图9为实施例2隔离板示意图。
图10为实施例3隔离板示意图。
图11为实施例4隔离板在触控屏上的示意图。
图12为实施例5隔离板在触控屏上的示意图。
图13为实施例1人手与触控屏上的误触区域的配合示意图。
图14为实施例2至5人手与触控屏上的隔离板的配合示意图。
具体实施方式
实施例1
一种用于触控屏的防误触方法，可用于平板电脑等大屏幕的电脑终端中。本发明的防误触方法主要解决用户在使用触控笔进行写字或绘画的操作时手掌对触控屏的误触问题。人们通过触控笔在触控屏上操作指令时，握笔的手侧面往往会以触控屏作为承托，从而在使用触控笔 写字或画画时更舒适和流畅，但是同时由于手掌与触控屏接触会使触控屏发生误操作，从而影响触控笔在触控屏上的正常指令操作。触控屏的防误触方法可由电脑终端的触控屏驱动层软硬件，系统层软件和应用层软件单独实现或者共同实现，如图1和图13所示，具体防误触方法包括以下步骤：
(1)在触控屏上形成一个误触区域2；
误触区域2的形状、大小和位置根据用户设定，用户可以设定初始化的误触区域2的大小、形状和位置，也可以在使用过程中根据需求调整误触区域2的大小、形状和位置；
误触区域2的形状为圆形、长方形或椭圆形，根据手掌在触控屏上形成的误触点的分布，本发明要求的误触区域2既要包住所有的误触点，又不影响触控屏的操作，所以误触区域2的最优形状为圆形、长方形或椭圆形；
所述误触区域2能够在触控屏1上显示出来，显示的形式可以是改变误触区域2的颜色或以线条方式将误触区域2围闭，这样用户就可以在触控屏1看到虚拟的误触区域2，便于用户判断误触区域2的位置、大小和形状是否合适；为了不影响触控屏1的正常显示，在不启用防误触系统时，误触区域2可以被隐藏或悬挂在触控屏的侧边，当需要启用时，通过软件将误触区域2调取出来即可；
(2)如图13所示，用户开始操作触控笔14前，可以先将误触区域2移动到触控屏1合适位置，然后将握笔的手掌13置于误触区域2内，如图3所示，那么此时的误触点3就落在误触区域2内；通过一定时间间隔的不断检测或通过触控事件的触发，实现对触控屏1上的触点的变化监测，该触点的变化包括触点的位置变化、触点的增加和触点的消失；通常触控屏的检测频率为60Hz-200Hz；
(3)根据误触区域2的大小和位置以及触控点的位置判断触点是否属于误触点；
误触点的判定可以通过以下几种方法实现：
(a)如图4所示，误触区域2以一个偏量Rb的大小扩大并形成一个误触检测区域4，出现在误触检测区域4里的触点为误触点3，偏量Rb是一个参考值，Rb＝0.5m/s*50Hz＝10mm，0.5m/s是人手指/手掌移动的较快速度；
(b)根据触点的移动轨迹，触控屏上来源于误触区域2内的触点为误触点；根据触点的轨迹可以知道触点移动前的位置，若触点的原始位置在误触区域2内，那么这些触点应该属于被隔离的误触点，即使这些误触点移动了，系统仍然认定他们为误触点；
(c)有触点在误触区域外，且距离误触区域的边界超过一个阀值Rr，Rr原则上比误触检测区域的半径大，Rr＝2*Rb＝20mm，该触点被认为是触控笔的触点而非误触点；根据触控笔的 操作习惯，距离误触区域的边界超过一个阀值Rr的触点可被认定为触控笔的触控，这些非误触点在触控屏上永远可实现触控，无论这些触点最终是否会落入误触区域里；
触点的位置判断可以由以下几个方法实现：
(a)通过触点的位置坐标信息来进行判断和操作，触点的位置坐标信息可通过现有触控屏技术得到，不再详细叙述；
(b)通过触点的坐标和形状信息来进行判断和操作，由人手产生的误触点显然是有形状的，触点的位置坐标信息和形状信息可通过现有触控屏技术得到，不再详细叙述；
(c)通过触点的位置坐标和包围触点的半径为Rt的模拟触点圆来进行判断和操作；Rt＝3-10mm(通常一个手触点的半径)；
(4)误触区域2的位置随着所有误触点的位置做调整；
如果误触区域2能完全包围所有误触点3，则误触区域2不动；
如图5所示，如果圆形误触区域2不能完全覆盖包围所有误触点3的最小圆5，则误触区域2的中心向上述最小圆5的圆心沿着路径6移动最小距离(两圆心距离-两圆半径差)，并使误触区域2包住上述最小圆5：最小圆5的直径和位置可以根据所有误触点3的坐标分布和形状来确定；若误触区域2不能够包围所述最小圆5，则报告信息，提示用户可以修改误触区域2的大小或形状；
如图7、8所示，当误触区域2移动到触控屏的边界，且误触区域2包围误触点的最小圆半径变小时，误触区域2的中心向上述最小圆的圆心沿着路径7移动最大的距离(两圆心距离+两圆半径差)，并且使误触区域2可以包围上述最小圆：
若触控屏没有任何误触点时，误触区域2被极小化在边界或者隐藏；
(5)隔离误触区域2内的误触点的触控。
在触控屏上形成防误触区域2，使手掌与触控屏接触的区域主要落在防误触区域2内，最后通过软件的方法将在误触区域2内的误触点进行隔离，从而不影响触控屏的正常操作。另外，根据触控笔书写或绘画的操作习惯，手持触控笔的手掌会在触控屏上形成移动，本发明的防误触区域2可以根据手掌的移动即误触点的移动而移动，因此能够可靠且自动适应将由人手产生的误触点进行隔离。
实施例2
一种用于触控屏的防误触方法，可用于平板电脑等大屏幕的电脑终端中。本发明的防误触方法主要解决用户在使用触控笔进行写字或绘画的操作时手掌对触控屏的误触问题。人们通过触控笔在触控屏上操作指令时，握笔的手侧面往往会以触控屏作为承托，从而在使用触控笔 写字或画画时更舒适和流畅，但是同时由于手掌与触控屏接触会使触控屏发生误操作，从而影响触控笔在触控屏上的正常指令操作。触控屏的防误触方法由隔离板实现的物理隔离，能够隔离手掌或者手指与触控屏之间信号传递。如图9所示，所述隔离板8为透明或半透明的塑料板；塑料板重量轻，携带方便，而且成本低，该塑料板可以是亚克力等高透材料；用户可以透过透明或半透明隔离板看到板下所画的内容，即使隔离板覆盖在触控屏上，但是也不会影响使用。隔离板8也可以通过其他手段使其在使用时才会变成透明或半透明。所述隔离板8与触控屏和手接触的两个接触面中，至少一个接触面为光滑面，这个光滑面与触控屏接触，容易在触控屏上移动，以方便用户在触控屏任何位置操作。所述隔离板的形状为圆柱形，其直径为30mm～100mm。所述隔离板的厚度为0.2～10mm，对应隔离板材料的介电常数不同，厚度也有相应的不同。如图14所示，人们通过触控笔在触控屏1上操作指令时，握笔的手掌13侧面往往会以触控屏1作为承托，从而在使用触控笔14写字或画画时更舒适和流畅，同时所述隔离板8避免手掌13对触控屏1的误操作。
如图2所示，隔离板的防误触方法包括以下步骤：
(1)在触控屏上形成一个用于隔离由人手形成的误触点的误触区域；
(2)该误触区域由放置在触控屏上用于承托人手的隔离板覆盖的区域形成；
(3)该误触区域能够随隔离板的移动而在触控屏上移动。
实施例3
一种用于触控屏的防误触方法，可用于平板电脑等大屏幕的电脑终端中。本发明的防误触方法主要解决用户在使用触控笔进行写字或绘画的操作时手掌对触控屏的误触问题。人们通过触控笔在触控屏上操作指令时，握笔的手侧面往往会以触控屏作为承托，从而在使用触控笔写字或画画时更舒适和流畅，但是同时由于手掌与触控屏接触会使触控屏发生误操作，从而影响触控笔在触控屏上的正常指令操作。触控屏的防误触方法由隔离板实现的物理隔离。如图10所示，所述隔离板8为透明或半透明的塑料板；塑料板重量轻，携带方便，而且成本低。用户可以透过透明或半透明隔离板看到板下所画的内容，即使隔离板覆盖在触控屏上，但是也不会影响使用。隔离板也可以通过其他手段使其在使用时才会变成透明或半透明。所述隔离板8上设有通槽9，该通槽9的数量和形状可以任意设定，而且隔离板8的形状也可以任意设定，以便隔离板8可以作为直尺或者曲线尺配合小笔尖的触控笔使用。所述隔离板8与触控屏和手接触的两个接触面中，至少一个接触面为光滑面，这个光滑面与触控屏接触，容易在触控屏上移动，以方便用户在触控屏任何位置操作。所述隔离板8的厚度为0.2～10mm，对应隔离板8材料的介电常数不同，厚度也有相应的不同。如图14所示，人们 通过触控笔13在触控屏1上操作指令时，握笔的手掌13侧面往往会以触控屏1作为承托，从而在使用触控笔14写字或画画时更舒适和流畅，同时所述隔离板8避免手掌13对触控屏1的误操作。
如图2所示，隔离板的防误触方法包括以下步骤：
(1)在触控屏上形成一个用于隔离由人手形成的误触点的误触区域；
(2)该误触区域由放置在触控屏上用于承托人手的隔离板覆盖的区域形成；
(3)该误触区域能够随隔离板的移动而在触控屏上移动。
实施例4
一种用于触控屏的防误触方法，可用于平板电脑等大屏幕的电脑终端中。本发明的防误触方法主要解决用户在使用触控笔进行写字或绘画的操作时手掌对触控屏的误触问题。人们通过触控笔在触控屏上操作指令时，握笔的手侧面往往会以触控屏作为承托，从而在使用触控笔写字或画画时更舒适和流畅，但是同时由于手掌与触控屏接触会使触控屏发生误操作，从而影响触控笔在触控屏上的正常指令操作。触控屏的防误触方法由隔离板与触控屏互动实现隔离。所述隔离板为透明或半透明的塑料板，塑料板重量轻，携带方便，而且成本低，该塑料板可以是如亚克力等高透材料；用户可以透过透明或半透明隔离板看到板下所画的内容，即使隔离板覆盖在触控屏上，但是也不会影响使用。隔离板也可以通过其他手段使其在使用时才会变成透明或半透明。如图11所示，所述隔离板8与物体接触的两个接触面中，至少一个接触面设有导电涂层10；本实施例中，只有与触控屏接触的一面设有导电涂层10，该导电涂层10通过导线11与电脑终端的金属外壳12电性连接。导电涂层10与所谓的大地之间的连接能通过微小的交流信号，大面积的导电涂层10与触控屏1接触后，给触控屏一个大面积触点信号，相当于告知触控屏里是一大块隔离板的位置，不是真正笔尖书写的位置，这样电脑终端就会隔离这个误触点，不在隔离板的位置留下书写痕迹。所述隔离板的形状为圆柱形，其直径为30mm～100mm。所述隔离板的厚度为0.2～5mm，对应隔离板材料的介电常数不同，厚度也有相应的不同。即使隔离板8不通过导线11与所谓的大地相连，当手放在隔离板8上时，隔离板8也会通过与手的微小交流信号的连通，连接到所谓的大地，起到同样的作用。如图14所示，人们通过触控笔14在触控屏1上操作指令时，握笔的手掌13侧面往往会以触控屏1作为承托，从而在使用触控笔写字或画画时更舒适和流畅，同时所述隔离板8避免手掌13对触控屏1的误操作。
如图2所示，隔离板的防误触方法包括以下步骤：
(1)在触控屏上形成一个用于隔离由人手形成的误触点的误触区域；
(2)该误触区域由放置在触控屏上用于承托人手的隔离板覆盖的区域形成；
(3)该误触区域能够随隔离板的移动而在触控屏上移动。
实施例5
一种用于触控屏的防误触方法，可用于平板电脑等大屏幕的电脑终端中。本发明的防误触方法主要解决用户在使用触控笔进行写字或绘画的操作时手掌对触控屏的误触问题。人们通过触控笔在触控屏上操作指令时，握笔的手侧面往往会以触控屏作为承托，从而在使用触控笔写字或画画时更舒适和流畅，但是同时由于手掌与触控屏接触会使触控屏发生误操作，从而影响触控笔在触控屏上的正常指令操作。触控屏的防误触方法由隔离板与触控屏互动实现隔离。所述隔离板为透明或半透明的导电材料板；用户可以透过透明或半透明隔离板看到板下所画的内容，即使隔离板覆盖在触控屏上，但是也不会影响使用。如图12所示，隔离板8通过导线11与电脑终端的金属外壳12电性连接，与所谓的大地之间的连接能通过微小的交流信号，大面积的隔离板与触控屏接触后，给触控屏一个大面积触点信号，相当于告知触控屏里是一大块隔离板的位置，不是真正笔尖书写的位置，这样电脑终端就会隔离这个误触点，不会在隔离板的位置留下书写痕迹。所述隔离板的形状为圆柱形，其直径为30mm～100mm。所述隔离板的厚度为0.2～10mm。即使隔离板8不通过导线11与所谓的大地相连，当手放在隔离板8上时，隔离板8也会通过与手的连接连接到所谓的大地，起到同样的作用。如图14所示，人们通过触控笔14在触控屏1上操作指令时，握笔的手掌13侧面往往会以触控屏1作为承托，从而在使用触控笔14写字或画画时更舒适和流畅，同时所述隔离板8避免手掌13对触控屏1的误操作。
如图2所示，隔离板的防误触方法包括以下步骤：
(1)在触控屏上形成一个用于隔离由人手形成的误触点的误触区域；
(2)该误触区域由放置在触控屏上用于承托人手的隔离板覆盖的区域形成；
(3)该误触区域能够随隔离板的移动而在触控屏上移动。
实施例6
一种用于触控屏的防误触系统，可用于平板电脑等大屏幕的电脑终端中。本发明的防误触方法主要解决用户在使用触控笔进行写字或绘画的操作时手掌对触控屏的误触问题。人们通过触控笔在触控屏上操作指令时，握笔的手侧面往往会以触控屏作为承托，从而在使用触控笔写字或画画时更舒适和流畅，但是同时由于手掌与触控屏接触会使触控屏发生误操作，从而影响触控笔在触控屏上的正常指令操作。触控屏的防误触系统可由电脑终端的触控屏驱动层软硬件，系统层软件和应用层软件单独实现或者共同实现。用于触控屏的防误触系统包括： 在触控屏上形成的误触区域、用于检测触点变化的触点检测单元、用于判断触点是否误触点的触点判断单元、根据误触点集的位置调整误触区域位置的误触区域定位单元、以及用于隔离误触区域的误触点触控的隔离单元。
误触区域的形状、大小和位置根据用户设定，用户可以设定初始化的误触区域的大小、形状和位置，也可以在使用过程中根据需求调整误触区域的大小、形状和位置。
误触区域的形状为圆形、长方形或椭圆形，根据手掌在触控屏上形成的误触点的分布，本发明要求的误触区域既要包住所有的误触点，又不影响触控屏的操作，所以误触区域的最优形状为圆形、长方形或椭圆形。
所述误触区域能够在触控屏上显示出来，显示的形式可以是改变误触区域的颜色或以线条方式将误触区域围闭，这样用户就可以在触控屏看到虚拟的误触区域，便于用户判断误触区域的位置、大小和形状是否合适；为了不影响触控屏的正常显示，在不启用防误触系统时，误触区域可以被隐藏或悬挂在触控屏的侧边，当需要启用时，通过软件将误触区域调取出来即可。
触点检测单元通过一定时间间隔的不断检测或通过触控事件的触发，实现对触控屏上的触点的变化监测，该触点的变化包括触点的位置变化、触点的增加和触点的消失；通常触控屏的扫描频率为60Hz-200Hz。
触点判断单元根据误触区域的大小和位置以及触控点的位置判断触点是否属于误触点，误触点的判定可以通过以下几种方法实现：
(a)误触区域以一个偏量Rb的大小扩大并形成一个误触检测区域，出现在误触检测区域里的触点为误触点，偏量Rb是一个参考值，Rb＝0.5m/s*50Hz＝10mm，0.5m/s是人手指/手掌移动的很快速度。
(b)根据触点的移动轨迹，触控屏上来源于误触区域内的触点为误触点；根据触点的轨迹可以知道触点移动前的位置，若触点的原始位置在误触区域内，那么这些触点应该属于被隔离的误触点，即使这些误触点移动了，系统仍然认定他们为误触点。
(c)有触点在误触区域外，且距离误触区域的边界超过一个阀值Rr，Rr原则上比误触检测区域的半径大，Rr＝2*Rb＝20mm，该触点被认为是触控笔的触点而非误触点；根据触控笔的操作习惯，距离误触区域的边界超过一个阀值Rr的触点可被认定为触控笔的触控，这些非误触点在触控屏上永远可实现触控，无论这些触点最终是否会落入误触区域里。
触点的位置判断可以由以下几个方法实现；
(a)通过触点的位置坐标信息来进行判断和操作，触点的位置坐标信息可通过现有触控屏 技术得到，不再详细叙述。
(b)通过触点的坐标和形状信息来进行判断和操作，由人手产生的误触点显然是有形状的，触点的位置坐标信息和形状信息可通过现有触控屏技术得到，不再详细叙述。
(c)通过触点的位置坐标和包围触点的半径为Rt的模拟触点圆来进行判断和操作；Rt＝3-10mm(通常一个手触点的半径)。
误触区域定位单元可以使误触区域的位置随着所有误触点的位置做调整：
如果误触区域不能完全覆盖包围所有误触点的最小圆，则误触区域的中心向上述最小圆的圆心移动最小距离(两圆心距离-两圆半径差)，并且使误触区域包住上述最小圆；最小圆的直径和位置可以根据所有误触点的坐标分布和形状来确定；若误触区域不能包围所述最小圆，则报告信息，提示用户可以修改误触区域的大小或形状。
如果所有误触点都在误触区域内，则误触区域不动。
当误触区域移动到触控屏的边界，且误触区域包围误触点的最小圆半径变小时，误触区域的中心向上述最小圆的圆心移动最大的距离(两圆心距离+两圆半径差)，并且使误触区域可以包围上述最小圆：若没有任何误触点时，误触区域被极小化在边界或者隐藏。
隔离单元用于隔离所有误触点的触控。
在触控屏上形成防误触区域，使手掌与触控屏接触的区域主要落在防误触区域内，最后通过软件的方法将在误触区域内的误触点进行隔离，从而不影响触控屏的正常操作。另外，根据触控笔书写或绘画的操作习惯，手持触控笔的手掌会在触控屏上形成移动，本发明的防误触区域可以根据手掌的移动即误触点的移动而移动，因此能够可靠且自动适应将由人手产生的误触点进行隔离。

Claims (23)

  1. 一种用于触控屏的防误触方法，其特征在于，包括以下步骤：
    (1)在触控屏上形成一个误触区域；
    (2)一旦触控屏上有触点发生变化；
    (3)根据误触区域的大小和位置以及触控点的位置判断触点是否属于误触点；
    (4)误触区域的位置随着所有误触点的位置做调整；
    (5)隔离所有误触点的触控。
  2. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述步骤(1)中，误触区域的形状、大小和位置根据用户设定。
  3. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述步骤(1)中，误触区域的形状为圆形、长方形或椭圆形。
  4. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述步骤(3)中，误触区域以一个偏量Rb的大小扩大并形成一个误触检测区域，出现在误触检测区域里的触点为误触点。
  5. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述步骤(3)中，根据触点的移动轨迹，触控屏上来源于误触区域内的触点为误触点。
  6. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：有触点在误触区域外，且距离误触区域的边界超过一个阀值Rr，该触点为非误触点。
  7. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述步骤(4)中，若所有误触点都在误触区域内，则误触区域不动。
  8. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述步骤(4)中，
    (a)如果误触区域不能完全覆盖包围所有误触点的最小圆，则误触区域的中心向上述最小圆的圆心移动最小距离，并且使误触区域包住上述最小圆；
    (b)若误触区域不能够包围所述最小圆，则报告信息。
  9. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述步骤(3)和(4)中，通过触点的位置坐标信息来进行判断和操作。
  10. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述步骤(3)和(4)中，通过触点的坐标和形状信息来进行判断和操作。
  11. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述步骤(3)和(4)中，通过触点的位置坐标和包围触点的半径为
    Figure PCTCN2016000417-appb-100001
    的模拟触点圆来进行判断和操作。
  12. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述步骤(3)中，当 误触区域移动到触控屏的边界时，若触控屏上没有任何误触点，误触区域被极小化在边界或者隐藏。
  13. 根据权利要求12所述的用于触控屏的防误触方法，其特征在于：当误触区域移动到触控屏的边界，且包围误触点的最小圆半径变小时，误触区域的中心向上述最小圆的圆心移动最大的距离，并且使误触区域可以包围上述最小圆；若触控屏上没有任何误触点，误触区域被极小化在边界或者隐藏。
  14. 根据权利要求1所述的用于触控屏的防误触方法，其特征在于：所述误触区域能够在触控屏上显示出来。
  15. 一种用于触控屏的防误触方法，其特征在于：
    (1)在触控屏上形成一个用于隔离由人手形成的误触点的误触区域；
    (2)该误触区域由放置在触控屏上用于承托人手的隔离板覆盖的区域形成；
    (3)该误触区域能够随隔离板的移动而在触控屏上移动。
  16. 根据权利要求15所述的一种用于触控屏的防误触方法，其特征在于：所述隔离板为非导电材料板，所述隔离板能够隔离人手与触控屏之间信号传递。
  17. 根据权利要求15所述的一种用于触控屏的防误触方法，其特征在于：所述隔离板为导电材料板，使隔离板在触控屏上形成大面积的触点，带有触控屏的电脑终端根据面积大小判断该大面积的触点为误触点并将其隔离。
  18. 根据权利要求15所述的一种用于触控屏的防误触方法，其特征在于：所述的隔离板与物体接触的两个接触面中，至少一个接触面设有导电涂层，使隔离板在触控屏上形成大面积的触点，带有触控屏的电脑终端根据面积大小判断该大面积的触点为误触点并将其隔离。
  19. 根据权利要求15所述的一种用于触控屏的防误触方法，其特征在于：所述隔离板为透明或半透明件。
  20. 根据权利要求15所述的一种用于触控屏的防误触方法，其特征在于：所述的误触区域提示板为轻质材料件，其密度为小于等于3×103kg/m3。
  21. 根据权利要求15所述的一种用于触控屏的防误触方法，其特征在于：所述隔离板的厚度为0.2～10mm。
  22. 根据权利要求15所述的一种用于触控屏的防误触方法，其特征在于：所述误触区域提示板与物体接触的两个接触面中，至少一个接触面为光滑面。
  23. 一种用于触控屏的防误触系统，其特征在于，包括：
    在触控屏上形成的误触区域；
    用于检测触点变化的触点检测单元；
    用于判断触点是否误触点的触点判断单元；
    根据误触点集的位置调整误触区域位置的误触区域定位单元；
    用于隔离所有误触点触控的隔离单元。
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