WO2011035739A1 - 一种在触摸系统中防止误触摸操作的方法及触摸系统 - Google Patents

一种在触摸系统中防止误触摸操作的方法及触摸系统 Download PDF

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Publication number
WO2011035739A1
WO2011035739A1 PCT/CN2010/077407 CN2010077407W WO2011035739A1 WO 2011035739 A1 WO2011035739 A1 WO 2011035739A1 CN 2010077407 W CN2010077407 W CN 2010077407W WO 2011035739 A1 WO2011035739 A1 WO 2011035739A1
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Prior art keywords
touch
touch operation
deformation
effective
bezel
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PCT/CN2010/077407
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English (en)
French (fr)
Inventor
刘建军
叶新林
刘新斌
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北京汇冠新技术股份有限公司
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Publication of WO2011035739A1 publication Critical patent/WO2011035739A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416Control or interface arrangements specially adapted for digitisers
    • G06F3/0418Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04186Touch location disambiguation

Definitions

  • the present invention relates to the field of photodetection technology, and more particularly to a method and a touch system for preventing an erroneous touch operation in a touch system including a touch screen. Background technique
  • Touch input device as a new type of input device is one of the simplest and most convenient human-computer interaction methods.
  • the existing touch input device does not distinguish the touch operation, such as when a flying insect falls on the touch panel, or when the user's sleeve passes over the touch panel, It is determined that the touch panel is touched, resulting in unnecessary errors, especially in industrial control, military, etc., such misoperation is not allowed. Summary of the invention
  • the present invention has been made in view of the above technical problems, and an object thereof is to provide a method of preventing an erroneous touch operation in a touch system and a corresponding touch system.
  • a method for preventing an erroneous touch operation in a touch system comprising: detecting a deformation of a touch panel or a bezel of the touch screen when a touch operation occurs on a touch screen of the touch system Determining whether the touch operation is an effective touch operation or an erroneous touch operation according to the detected deformation of the touch panel or the bezel; and determining a position of the effective touch operation when the touch operation is a valid touch operation.
  • a method for preventing an erroneous touch operation in a touch system comprising: calculating a position of the touch operation when a touch operation occurs on a touch screen of the touch system; detecting the Deformation of the touch panel or frame of the touch caused by the touch operation; determining, according to the detected deformation of the touch panel or the frame, whether the touch operation is an effective touch operation or a false touch operation; when the touch operation When it is a valid touch operation, processing related to the effective touch operation is performed based on the position of the effective touch operation.
  • a touch system comprising:
  • a sensor that detects a deformation of a touch panel or a bezel of the touch screen when there is a touch operation on the touch screen
  • An analyzing device that determines whether the touch operation is an effective touch operation or an erroneous touch operation according to a deformation of the touch panel or the frame detected by the sensor, and is responsive to the effective when the touch operation is a valid touch operation Touch operation, generating a valid touch signal, and transmitting the effective touch signal to the main control device;
  • a main control device that determines a position of the effective touch operation in response to the valid touch signal, and performs a process related to the effective touch operation based on a position of the effective touch operation.
  • FIG. 1 is a flow chart of a method of preventing an erroneous touch operation in a touch system, in accordance with one embodiment of the present invention
  • FIG. 2 is a flow chart showing a specific example of a method of preventing an erroneous touch operation in a touch system of the embodiment shown in FIG. 1;
  • FIG. 3 is a flow chart showing another specific example of a method of preventing an erroneous touch operation in a touch system of the embodiment shown in FIG. 1;
  • FIG. 4 is a flow chart of a method of preventing an erroneous touch operation in a touch system according to another embodiment of the present invention.
  • Figure 5 is a flow chart showing a specific example of a method of preventing an erroneous touch operation in a touch system of the embodiment shown in Figure 4;
  • FIG. 6 is a schematic structural diagram of a touch system according to an embodiment of the present invention.
  • Figure 7 is a schematic structural view of a modification of the touch system of the embodiment shown in Figure 6;
  • Figure 8 is a schematic structural view of another modification of the touch system of the embodiment shown in Figure 6;
  • Figure 9 is a view of Figure 6 to Figure 8.
  • Figure 10 is a schematic structural view showing an example of the analyzing device in the embodiment shown in Figures 6 to 8;
  • Figure 11 is a structural schematic view showing another example of the analyzing device in the embodiment shown in Figures 6 to 8;
  • Figure 12 is a schematic view showing an example of a main control device in the embodiment shown in Figures 6 to 8;
  • FIG. 13 is a schematic structural view of a touch system according to another embodiment of the present invention.
  • FIG. 14 is a cross-sectional view of the touch screen in the touch system of the embodiment shown in FIG.
  • Figure 15 is a schematic view showing the mounting of the sensor on the bezel in the touch system of the embodiment shown in Figure 13; detailed description
  • the term "effective touch” refers to a touch panel or frame deformation that is desired to be interpreted as a touch input, an event that causes such a touch panel deformation or bezel, and a sensor reception. Signals generated by these touch panel deformations or borders.
  • the term “false touch” refers to a touch panel or frame deformation that is not desired to be interpreted as a touch input, an event that causes such touch panel or frame deformation, and a sensor that receives these touch panel deformations or borders. signal of.
  • an erroneous touch includes a signal generated by deformation of a touch panel in a touch system due to changes in external temperature or air pressure, flying insects touching a touch panel, and raindrops to a touch panel.
  • the touch system of the present invention refers to a system that includes a touch screen.
  • FIG. 1 is a flow chart of a method of preventing an erroneous touch operation in a touch system, in accordance with one embodiment of the present invention.
  • the present embodiment will be described in detail below with reference to the accompanying drawings.
  • a deformation of a touch panel or a bezel of a touch screen of the touch system is detected.
  • deformation of the touch panel or the frame caused by the touch operation is detected.
  • the touch operation will cause a certain degree of deformation of the touch panel or the frame.
  • the size of the touch panel or bezel is related to the touch operation that the touch screen is subjected to. For example, when a flying insect hits a touch screen, the touch operation It may only be a small deformation of the panel or border. The deformation of the touch panel or the frame caused by an adult consciously touching the touch is larger.
  • the senor can be used to detect the deformation of the touch panel or the bezel.
  • the sensor can be, for example, a strain gauge, a fiber optic sensor, a piezoelectric sensor, and any combination thereof.
  • the sensor can generally be mounted on a touch panel or bezel, the details of which will be described later.
  • the deformation of the touch panel or the frame detected by the sensor can be generally represented by one of a voltage signal, a current signal, an analog signal, and a digital signal.
  • step 105 it is determined whether the touch operation is a valid touch operation or a false touch operation based on the deformation of the touch panel or the bezel detected in step 101.
  • the above determination can be made by comparing the deformation of the touch panel or the bezel with a predetermined threshold.
  • the deformation information indicating the deformation of the touch panel or the frame obtained by the step 101 for example, an analog signal or a digital signal such as a voltage signal or a current signal, is compared with a predetermined threshold. If the deformation information is greater than or equal to the predetermined threshold, it is determined that the touch operation is a valid touch operation, and step 110 is performed. If the deformation information is less than the predetermined threshold, it is determined that the touch operation is a false touch operation, and no processing is performed.
  • step 110 the position of the effective touch operation is determined.
  • step 115 processing related to the valid touch operation is performed according to the determined location of the effective touch operation.
  • Fig. 2 is a view showing a specific example of the embodiment shown in Fig. 1. The specific example will be described in detail below with reference to the accompanying drawings, wherein the same portions as those of the previous embodiment are appropriately omitted.
  • step 201 when a touch operation occurs on the touch screen, the deformation of the touch panel is detected.
  • the deformation of the touch panel can be detected by detecting the deformation of the touch panel in a direction parallel to the touch panel.
  • the detected deformation can be represented by analog signals such as voltage signals and current signals, and digital signals.
  • step 205 deformation information indicating the deformation of the detected touch panel and the pre-deception will be The threshold is compared for comparison, and in step 210, it is determined whether the touch operation is a valid touch operation or a false touch operation.
  • the deformation information of the touch panel is greater than or equal to a predetermined threshold, it is determined that the touch operation is a valid touch operation, and step 215 is performed.
  • the deformation information of the touch panel is less than a predetermined threshold, it is determined that the touch operation is a false touch operation, and no processing is performed.
  • step 215 the location of the valid touch operation is determined. Then, at step 220, processing related to the valid touch operation is performed based on the determined location of the effective touch operation.
  • Fig. 3 is a flow chart showing another specific example of the embodiment shown in Fig. 1.
  • This specific example is basically the same as the specific example shown in Fig. 2, and the only difference is that in the specific example shown in Fig. 3, the deformation of the frame is detected. That is, in step 301, when a touch operation occurs on the touch screen, the deformation of the bezel is detected, for example, detecting the deformation of the bezel in a direction parallel to the bezel, or detecting the deformation of the bezel in other directions.
  • the remaining steps 305-325 are the same as steps 205-225 in Fig. 2, and the description thereof is omitted here.
  • the method of the above embodiment detects the deformation of the touch panel or the frame caused by the touch operation, and confirms whether the touch operation is an effective touch operation or a false touch operation according to the detected deformation of the touch panel or the frame, and is effective.
  • the position of the effective touch operation is determined in the case of a touch operation, thereby effectively shielding the false touch operation.
  • FIG. 4 is a flow chart of a method of preventing an erroneous touch operation in a touch system in accordance with another embodiment of the present invention.
  • the present embodiment will be described in detail below with reference to the accompanying drawings, wherein the same portions as those of the previous embodiment are appropriately omitted.
  • step 401 when a touch operation occurs on the touch screen of the touch system, the position of the touch operation is calculated.
  • the deformation of the touch panel or the bezel of the touch screen is detected.
  • the touch operation causes a certain degree of deformation of the touch panel or the bezel.
  • the size of the touch panel or bezel is related to the touch operation that the touch screen is subjected to.
  • the deformation of the touch panel or bezel can be detected using a sensor.
  • sensors can be strain gauges, fiber optic sensors, piezoelectric sensors, and any combination thereof.
  • the sensor is generally mounted on a touch panel or a frame, and the deformation of the detected touch panel or frame can be represented by one of an analog signal and a digital signal such as a voltage signal and a current signal.
  • step 410 it is determined whether the touch operation is a valid touch operation or a false touch operation according to the deformation of the touch panel or the bezel detected in step 405. Similar to the embodiment shown in FIG. 1, this step determines whether the touch operation is a valid touch operation or a false touch operation by comparing the deformation information of the touch panel or the bezel and the size of the predetermined threshold. Specifically, the deformation information indicating the deformation of the touch panel or the bezel obtained by the detection of step 405 is compared with a predetermined threshold. If the deformation information is greater than or equal to the predetermined threshold, it is determined that the touch operation is a valid touch operation, and step 415 is performed. If the deformation information is less than the predetermined threshold, it is determined that the touch operation is a false touch operation, and no processing is performed.
  • step 415 when the touch operation is determined to be a valid touch operation, processing related to the effective touch operation is performed based on the position of the effective touch operation calculated in step 401.
  • Fig. 5 is a flow chart showing a specific example of a method of preventing an erroneous touch operation in a touch system of the embodiment shown in Fig. 4.
  • the specific example will be described in detail below with reference to the accompanying drawings, wherein the same portions as those of the previous embodiment are appropriately omitted.
  • step 501 when a touch operation occurs on the touch screen of the touch system, the location of the touch operation is calculated.
  • step 505 the deformation of the touch panel is detected.
  • the deformation of the touch panel can be detected by detecting the deformation of the touch panel in a direction parallel to the touch panel.
  • the deformation information indicating the deformation of the detected touch panel is compared with a predetermined threshold, and in step 515, it is determined whether the touch operation is a valid touch operation or a false touch operation.
  • step 520 When the deformation information of the touch panel is greater than or equal to a predetermined threshold, it is determined that the touch operation is a valid touch operation, and step 520 is performed. When the deformation information of the touch panel is less than the predetermined threshold, it is determined that the touch operation is an erroneous touch operation, and no processing is performed. At step 520, processing related to the valid touch operation is performed based on the position of the valid touch operation calculated in step 501.
  • FIG. 6 is a schematic structural view of a touch system according to an embodiment of the present invention. The present embodiment will be described in detail below with reference to the accompanying drawings.
  • the touch system of this embodiment includes: a touch screen 601; a sensor 605, Determining the deformation of the touch panel or the bezel of the touch screen 601 when the touch screen 601 is touched; the analyzing device 606 determines whether the touch operation is an effective touch operation or a false touch operation according to the deformation of the touch panel or the bezel detected by the sensor 605, and When the touch operation is an effective touch operation, in response to the effective touch operation, an effective touch signal is generated, and the effective touch signal is transmitted to the main control device 607; and the main control device 607 determines the effective touch operation in response to the effective touch signal. The location, and based on the determined location of the effective touch operation, performs processing associated with the valid touch operation.
  • touch screen 601 is an optical touch screen that utilizes an image sensor and uses triangulation to position the touch object.
  • the optical touch screen includes an infrared light source 603 as a light source, a retroreflective strip 602, two infrared cameras 604 as image sensors, and a touch panel.
  • the infrared camera 604 is installed at two adjacent corners of the touch panel
  • the infrared light source 603 is installed near the infrared camera 604
  • the retroreflective strip 602 is mounted on the three edges of the touch panel for The light from the infrared source 603 is reflected back to the vicinity of the infrared source 603 to provide illumination to the infrared image head 604 for capturing the image information of the touch object.
  • sensors 605 are included, which are respectively mounted on both edges of the touch surface of the touch panel for detecting the deformation of the touch panel.
  • Sensor 605 can be one or more of a strain gauge, a fiber optic sensor, a piezoelectric sensor.
  • the sensor 605 is a fiber optic sensor because the fiber sensor is highly sensitive and can detect the deformation of the touch panel well.
  • the present embodiment uses four sensors 605.
  • sensors 605 can be used.
  • the detection effect will be poor.
  • the sensor 605 is mounted on the touch surface of the touch panel to detect the deformation of the touch panel in this embodiment, the sensor 605 can be mounted at other positions of the touch panel.
  • FIGS. 7 and 8 respectively show variations of the touch system of the embodiment shown in FIG. 6, which differ from FIG. 6 in that the mounting positions of the sensor 605 on the touch panel are different.
  • the sensor 65 is mounted on the opposite side of the touch surface of the touch panel, that is, in the touch Below the touch panel, to indicate that the sensor 605 is mounted below the touch panel, the sensor 605 is indicated by a dashed line.
  • the sensor 605 is mounted on the side of the touch panel.
  • the sensor 605 can also be mounted at the corner of the touch panel, as will be described later with reference to FIG.
  • Figure 9 shows a schematic diagram of the above three mounting arrangements of the sensor 605 mounted on the touch panel.
  • the sensor 605 can also detect the deformation of the bezel.
  • the sensor 605 is mounted on a bezel, such as on the upper, lower or side of the bezel.
  • Fig. 10 is a view showing the configuration of an example of the analyzing means 606 in the above embodiment.
  • the analyzing device 606 includes a signal amplifying circuit 901, a low pass filter 902, a peak shaping circuit 903, a comparison circuit 904, and a threshold generating unit 905.
  • the analysis device 606 receives a signal (e.g., a voltage signal) indicative of a deformation of the touch panel or bezel from the sensor 605, the signal is first amplified by the signal amplification circuit 901.
  • the amplification factor of the signal amplifying circuit 901 can be adjusted according to the actual situation, usually about 30 times.
  • the signal amplified by the signal amplifying circuit 901 enters the low pass filter 902 to filter out a signal higher than the frequency of the effective signal. Usually, the effective signal is less than 1KHZ.
  • the valid signal is then shaped by peak shaping circuit 903 and provided to comparison circuit 904.
  • the peak shaped effective signal is compared to a threshold (e.g., threshold voltage signal) generated by threshold generation unit 905. If the peak-shaped effective signal is greater than or equal to the threshold, the signal output by the sensor 605 is a signal indicating a valid touch operation.
  • a threshold e.g., threshold voltage signal
  • the comparison circuit 904 generates an effective touch signal and outputs the effective touch signal, usually an effective touch signal. Is a low level signal. If the signal after peak shaping is less than the threshold, the signal output by the sensor 605 is a signal indicating an erroneous touch operation, at which time the comparison circuit 904 does not generate a valid touch signal. In this example, the sensitivity of the entire analysis device 606 can be adjusted by adjusting the threshold.
  • Fig. 11 is a view showing the configuration of another example of the analyzing device 606 in the above embodiment.
  • the wake-up device 606 includes a signal amplifying circuit 901, a low-pass filter 902, A/D converter 906 and processor 907.
  • the signal amplifying circuit 901 amplifies a signal output from the sensor 605 indicating the deformation of the touch panel or the bezel to facilitate subsequent processing.
  • the amplification factor of the signal amplifying circuit 901 can be adjusted according to actual conditions, and is usually about 30 times.
  • the signal amplified via the signal amplifying circuit 901 enters the low pass filter 902 to filter out high frequency signals other than the effective signal, which is typically less than 1 kHz.
  • the A/D converter 906 converts the analog signal output from the low pass filter 902 into a digital signal and supplies it to the processor 907.
  • the processor 907 determines the validity of the digitized signal, and if the signal is valid, the processor 907 outputs a valid touch signal. In addition, the processor 907 can also determine whether the signal is valid by waveform recognition.
  • the main control unit 607 is connected to the touch panel and analysis unit 606, respectively, and receives an effective touch signal from the analysis unit 606 and an image signal from the touch panel, and calculates a position of the effective touch operation based on the effective touch signal and the image signal.
  • Fig. 12 shows an example of the main control unit 607 in the above embodiment.
  • the main control unit 607 includes a main processor 1201, a bus 1204, and an interface 1205.
  • the main control unit 607 can communicate with the touch screen 601 via the interface 1205.
  • the main control device 607 can also be integrated with the touch screen 601.
  • analysis device 606 is also coupled to main processor 1201 in main control device 67 via interface 1205.
  • main processor 1201 is responsible for calculating the touch position of the touch object, and performing processing related to the touch operation based on the calculated touch position.
  • Main processor 1201 also manages signal transmission between interface 1205 and the touch panel and signal transmissions to and from external systems or devices via bus 1204.
  • main processor 1201 incorporates a digital signal processor (DSP) or a field programmable gate array (FPGA).
  • DSP digital signal processor
  • FPGA field programmable gate array
  • Bus 1204 enables host processor 1201 to be communicatively coupled to another system or device, which may be a computer device or a display system that operates in conjunction with touch screen 601.
  • the main processor 1201 calculates a touch location for the valid touch operation and performs a corresponding process. In another case, the main processor 1201 may also calculate the touch position of the touch operation in parallel with the deformation of the touch panel or the frame detected by the sensor 605 when a touch operation occurs on the touch display 601, and receive the image from the analysis device. After the valid touch signal of 606, processing related to the touch operation is performed.
  • the analyzing means 606, the control means 607 and the touch screen 601 are separately provided, the analyzing means 606, the control means 607 and the touch screen 601 can also be integrated.
  • FIG. 13 is a block diagram showing the structure of a touch system in accordance with another embodiment of the present invention.
  • the present embodiment will be described in detail below with reference to the drawings, in which the same portions as those of the previous embodiment are appropriately omitted.
  • the touch system of the present embodiment shown in Fig. 13 includes a touch screen 601, a sensor 605, an analyzing device 606, and a main control device 607.
  • the touch screen 601 is an infrared touch screen.
  • the infrared touch screen includes an infrared transmitting tube array 1301, an infrared receiving tube array 1302, a touch panel 1304, and a bezel 1303.
  • the touch panel 1304 is mounted on the bezel 1303, as shown in FIG.
  • the infrared transmitting tube array 1301 and the infrared receiving tube array 1302 are located on four sides of the frame 1303.
  • Each of the infrared transmitting tube arrays 1301 is opposite to an infrared receiving tube array 1302 to form an infrared mesh grid, that is, the infrared transmitting tube array 1301.
  • the infrared receiving tube array 1302 constitutes two pairs of infrared pair tube arrays.
  • there are four sensors 605 which are respectively mounted at the four corners of the lower surface of the bezel 1303 to detect the deformation of the bezel 1303.
  • Sensor 605 can be one or more of a strain gauge, a fiber optic sensor, a piezoelectric sensor.
  • the main control unit 607 is connected to the infrared transmitting tube array 1301, the infrared receiving tube array 1302, the sensor 605 and the analyzing device 606, respectively, that is, the main control unit 607 is connected to the two pairs of infrared pair tube arrays, and is also connected to the four sensors 605.
  • the analysis device 606, the main control device 607, and the bezel 1303 are disposed separately from each other, but the analysis device 606, the main control device 607, and the bezel 1303 may be integrally provided.
  • the sensor 605 may be mounted at other corners of the bezel 1303 in addition to the corners of the lower surface of the bezel 1303 of the touch screen 601, for example, on the upper surface or side of the bezel 1303.
  • Figure 15 shows the above three mounting methods of the sensor 605 mounted on the bezel 1303. Schematic.
  • the touch in the above embodiments of the present invention may also be a resistive touch screen, a capacitive touch screen, a projected capacitive touch screen, a surface acoustic wave touch screen, a curved wave touch screen, or the like.
  • the touch panel described above is used, the mounting position of the sensor, the analyzing device, and the like are substantially the same as those of the previous embodiment, and will not be described in detail herein.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • User Interface Of Digital Computer (AREA)
  • Position Input By Displaying (AREA)

Description

一种在触摸系统中防止误触摸操作的方法及触摸系统 技术领域
本发明涉及光电检测技术领域, 尤其涉及一种在包含触摸屏的触摸系 统中防止误触摸操作的方法以及触摸系统。 背景技术
触摸输入设备作为一种新型的输入设备, 是目前最简单、 方便的人机 交互方式之一。 但是, 在实际应用中, 现有的触摸输入设备并不对触摸操 作进行区分, 这样, 例如当一只飞虫落在触摸面板上时, 或者当使用者的 衣袖拂过触摸面板时, 也可能被确定为对触摸面板进行了触摸操作, 从而 导致不必要的错误, 尤其在例如工业控制、 军事等方面, 这样的误操作是 不被允许的。 发明内容
本发明正是鉴于上述技术问题而提出的, 其目的在于提供一种在触摸 系统中防止误触摸操作的方法以及相应的触摸系统。
根据本发明的第一个方面, 提供一种在触摸系统中防止误触摸操作的 方法, 包括: 当在所述触摸系统的触摸屏上发生触摸操作时, 检测所述触 摸屏的触摸面板或边框的形变;根据所检测的所述触摸面板或边框的形变, 确定所述触摸操作是有效触摸操作还是误触摸操作; 以及当所述触摸操作 是有效触摸操作时, 确定所述有效触摸操作的位置。
根据本发明的第二个方面, 提供一种在触摸系统中防止误触摸操作的 方法, 包括: 当在所述触摸系统的触摸屏上发生触摸操作时, 计算所述触 摸操作的位置; 检测所述触摸操作所引起的所述触^^的触摸面板或边框 的形变; 根据所检测的所述触摸面板或边框的形变, 确定所述触摸操作是 有效触摸操作还是误触摸操作; 当所述触摸操作是有效触摸操作时, 基于 所述有效触摸操作的位置, 执行与所述有效触摸操作相关的处理。 根据本发明的第三个方面, 提供一种触摸系统, 包括:
传感器, 其在所述触摸屏上有触摸操作时检测所述触摸屏的触摸面板 或边框的形变;
分析装置, 其根据所述传感器所检测的所述触摸面板或边框的形变确 定所述触摸操作是有效触摸操作还是误触摸操作, 并在所述触摸操作是有 效触摸操作时, 响应于所述有效触摸操作, 产生有效触摸信号, 并将所述 有效触摸信号发送到主控制装置; 以及
主控制装置, 其响应于所述有效触摸信号, 确定所述有效触摸操作的 位置, 并基于所述有效触摸操作的位置, 执行与所述有效触摸操作相关的 处理。 附图说明
图 1是根据本发明的一个实施例的在触摸系统中防止误触摸操作的方 法的流程图;
图 2是图 1所示实施例的在触摸系统中防止误触摸操作的方法的一个 具体例子的流程图;
图 3是图 1所示实施例的在触摸系统中防止误触摸操作的方法的另一 个具体例子的流程图;
图 4是根据本发明的另一个实施例的在触摸系统中防止误触摸操作的 方法的流程图;
图 5是图 4所示实施例的在触摸系统中防止误触摸操作的方法的一个 具体例子的流程图;
图 6是根据本发明的一个实施例的触摸系统的结构示意图;
图 7是图 6所示实施例的触摸系统的一个变形例的结构示意图; 图 8是图 6所示实施例的触摸系统的另一个变形例的结构示意图; 图 9是图 6至图 8所示实施例的触摸系统中传感器在触摸面板上的安 装示意图; 图 10是图 6至图 8所示的实施例中的分析装置的一个例子的结构示意 图;
图 11是图 6至图 8所示的实施例中的分析装置的另一个例子的结构示 意图;
图 12是图 6至图 8所示的实施例中的主控制装置的一个例子的示意 图;
图 13是根据本发明的另一个实施例的触摸系统的结构示意图; 图 14是图 13所示实施例的触摸系统中触摸屏的剖视图;
图 15是图 13所示实施例的触摸系统中传感器在边框上的安装示意图。 具体实施方式
下面结合说明书附图和具体实施方式对本发明作进一步的描述。
本发明各个实施例中的上下文中, 术语 "有效触摸" 是指希望被解释 为触摸输入的可被检测到的触摸面板或边框形变、 引起这种触摸面板形变 或边框的事件、 以及由于传感器接收到这些触摸面板形变或边框而产生的 信号。 术语 "误触摸" 是指不希望被解释为触摸输入的可被检测到的触摸 面板或边框形变、 引起这种触摸面板或边框形变的事件、 以及由于传感器 接收到这些触摸面板形变或边框而产生的信号。 例如, 误触摸包括由于外 界温度或者气压的变化、 飞虫碰到触摸面板、 雨滴到触摸面板而引起触摸 系统中的触摸面板形变而产生的信号。 本发明所述的触摸系统是指包含触 摸屏的系统。
图 1是根据本发明的一个实施例的在触摸系统中防止误触摸操作的方 法的流程图。 下面结合附图, 对本实施例进行详细描述。
如图 1所示, 在步骤 101, 检测触摸系统的触摸屏的触摸面板或边框 的形变。 在该步骤中, 当在触摸屏上发生触摸操作时, 检测由该触摸操作 引起的触摸面板或边框的形变。 当在触^^上有触摸操作时, 该触摸操作 将导致触摸面板或边框发生一定程度的形变。 触摸面板或边框的形变大小 与触摸屏所受到的触摸操作有关。 例如, 当飞虫碰到触摸屏时, 该触摸操 作可能只引^ 4摸面板或边框的较小形变。 当成年人有意识地对触^ ^进 行触摸操作时引起的触摸面板或边框的形变则较大。 在该步骤中, 可利用 传感器检测触摸面板或边框的形变。 传感器可以例如是应变片、 光纤传感 器、 压电传感器及其任意组合。 传感器一般可安装在触摸面板或边框上, 其详情在后面说明。 传感器所检测的触摸面板或边框的形变一般可用电压 信号、 电流信号、 模拟信号、 数字信号中的一种表示。
接着, 在步骤 105, 根据在步骤 101中检测的触摸面板或边框的形变, 确定触摸操作是有效触摸操作还是误触摸操作。 在本实施例中, 可通过比 较触摸面板或边框的形变与预定阈值来进行上述确定。 具体地, 将通过步 骤 101检测获得的表明触摸面板或边框的形变的形变信息, 例如, 电压信 号、 电流信号等模拟信号或数字信号, 与预定阈值进行比较。 如果形变信 息大于或等于上述预定阈值, 则确定该触摸操作是有效触摸操作, 执行步 骤 110。 如果形变信息小于预定阈值, 则确定该触摸操作是误触摸操作, 不执行任何处理。
当在步骤 105中确定触摸操作是有效触摸操作时, 在步骤 110, 确定 该有效触摸操作的位置。
可选地, 在步骤 115, 根据所确定的有效触摸操作的位置, 执行与该 有效触摸操作相关的处理。
图 2是图 1所示的实施例的一个具体例子的 图。 下面结合附图, 对该具体例子进行详细描述, 其中与前面实施例相同的部分, 适当省略其 说明。
在图 2所示的具体例子中, 对触摸面板的形变进行检测。
具体地, 在步骤 201, 当在触摸屏上发生触摸操作时, 检测触摸面板 的形变。 在该步骤中, 触摸面板的形变可通过检测触摸面板在与触摸面板 平行的方向上的形变M^测。 当然, 本领域的普通技术人员能够理解, 也 可以检测触摸面板在其它方向上的形变。 同样, 所检测的形变可用电压信 号、 电流信号等模拟信号、 数字信号表示。
接着, 在步骤 205, 将表明所检测的触摸面板的形变的形变信息与预 定阈值进行比较, 并在步骤 210中, 确定触摸操作是有效触摸操作还是误 触摸操作。 当触摸面板的形变信息大于或等于预定阈值时, 则确定该触摸 操作是有效触摸操作, 执行步骤 215。 当触摸面板的形变信息小于预定阈 值时, 则确定该触摸操作是误触摸操作, 不执行任何处理。
在步骤 215中, 确定该有效触摸操作的位置。 然后, 在步骤 220, 根 据所确定的有效触摸操作的位置, 执行与该有效触摸操作相关的处理。
图 3示出了图 1所示的实施例的另一个具体例子的流程图。 该具体例 子与图 2所示的具体例子基本相同, 区别仅在于: 在图 3所示的具体例子 中, 对边框的形变进行检测。 也就是说, 在步骤 301, 当在触摸屏上发生 触摸操作时, 检测边框的形变, 例如, 检测边框在与边框平行的方向上的 形变, 或者检测边框在其它方向上的形变。 其余的步骤 305-325与图 2中 的步骤 205-225相同, 此处省略其说明。
通过以上描述可以看出, 上述实施例的方法检测由触摸操作引起的触 摸面板或边框的形变, 根据所检测的触摸面板或边框的形变确认触摸操作 是有效触摸操作还是误触摸操作, 并在有效触摸操作的情况下确定该有效 触摸操作的位置, 从而有效地屏蔽误触摸操作。
图 4是根据本发明的另一个实施例的在触摸系统中防止误触摸操作的 方法的流程图。 下面结合附图, 对本实施例进行详细描述, 其中与前面实 施例相同的部分, 适当省略其说明。
如图 4所示, 在步骤 401, 当在触摸系统的触摸屏上发生触摸操作时, 计算该触摸操作的位置。
接着, 在步骤 405, 检测触摸屏的触摸面板或边框的形变。 当在触摸 屏上发生触摸操作时, 该触摸操作会使得触摸面板或边框发生一定程度的 形变。 触摸面板或边框的形变大小与触摸屏所受到的触摸操作有关。 在该 步骤中, 触摸面板或边框的形变可利用传感器检测。 如前所述, 这种传感 器可以是应变片、 光纤传感器、 压电传感器及其任意组合。 传感器一般安 装在触摸面板或边框上, 其所检测的触摸面板或边框的形变可以用电压信 号、 电流信号等模拟信号和数字信号中的一种表示。 然后, 在步骤 410, 根据在步骤 405中检测的触摸面板或边框的形变, 确定触摸操作是有效触摸操作还是误触摸操作。与图 1所示的实施例类似, 该步骤通过比较触摸面板或边框的形变信息和预定阈值的大小来确定触摸 操作是有效触摸操作还是误触摸操作。 具体地, 将通过步骤 405的检测获 得的表明触摸面板或边框的形变的形变信息与预定阈值进行比较。 如果形 变信息大于或等于预定阈值, 则确定该触摸操作是有效触摸操作, 执行步 骤 415。 如果形变信息小于预定阈值, 则确定该触摸操作是误触摸操作, 不执行任何处理。
然后, 在步骤 415, 当触摸操作被确定为有效触摸操作时, 基于在步 骤 401中计算的有效触摸操作的位置,执行与该有效触摸操作相关的处理。
图 5是图 4所示实施例的在触摸系统中防止误触摸操作的方法的一个 具体例子的流程图。 下面结合附图, 对该具体例子进行详细描述, 其中与 前面实施例相同的部分, 适当省略其说明。
在图 5所示的具体例子中, 对触摸面板的形变进行检测。
具体地, 在步骤 501, 当在触摸系统的触摸屏上发生触摸操作时, 计 算该触摸操作的位置。 接着, 在步驟 505, 检测触摸面板的形变。 在该步 骤中, 触摸面板的形变可通过检测触摸面板在与触摸面板平行的方向上的 形变 测。 当然, 本领域的普通技术人员能够理解, 也可以检测触摸面 板在其它方向上的形变。 接着, 在步骤 510, 将表明所检测的触摸面板的 形变的形变信息与预定阈值进行比较, 并在步骤 515中, 确定触摸操作是 有效触摸操作还是误触摸操作。 当触摸面板的形变信息大于或等于预定阈 值时, 则确定该触摸操作是有效触摸操作, 执行步骤 520。 当触摸面板的 形变信息小于预定阈值时, 则确定该触摸操作是误触摸操作, 不执行任何 处理。 在步骤 520, 基于在步骤 501 中计算的该有效触摸操作的位置, 执 行与该有效触摸操作相关的处理。
图 6是才艮据本发明的一个实施例的触摸系统的结构示意图。 下面结合 附图, 对本实施例进行详细描述。
如图 6所示, 本实施例的触摸系统包括: 触摸屏 601; 传感器 605, 其 在触摸屏 601上有触摸操作时检测触摸屏 601的触摸面板或边框的形变; 分析装置 606, 其根据传感器 605所检测的触摸面板或边框的形变确定触 摸操作是有效触摸操作还是误触摸操作,并在触摸操作是有效触摸操作时, 响应于该有效触摸操作, 产生有效触摸信号, 并将有效触摸信号发送到主 控制装置 607; 以及主控制装置 607, 其响应于有效触摸信号, 确定该有效 触摸操作的位置, 并基于所确定的有效触摸操作的位置, 执行与该有效触 摸操作相关的处理。
在本实施例中, 触摸屏 601是光学触摸屏, 其利用图像传感器并使用 三角测量法对触摸物进行定位。 该光学触摸屏包括作为光源的红外光源 603、回归反射条 602、两个作为图像传感器的红外摄像头 604和触摸面板。 在本实施例中, 红外摄像头 604被安装在触摸面板的两个相邻的拐角处, 红外光源 603安装在红外摄像头 604的附近, 回归反射条 602安装在触摸 面板的三个边缘上, 用于将红外光源 603发出的光反射回红外光源 603附 近, 以便向红外才聂像头 604提供捕获触摸物的图像信息所需的光照。
在本实施例的触摸系统中, 包含四个传感器 605, 分别安装在触摸面 板的触摸面的两个边缘上, 用于检测触摸面板的形变。 传感器 605可以是 应变片、 光纤传感器、 压电传感器中的一个或多个。 在本实施例中, 传感 器 605是光纤传感器, 因为光纤传感器具有高度的灵敏性, 能够很好地检 测触摸面板的形变。
为了使传感器 605能够很好地检测触摸面板的形变, 本实施例使用了 四个传感器 605。 当然, 本领域的普通技术人员能够理解, 也可以使用其 它数量的传感器 605, 例如一个传感器。 当然, 如果传感器 605的数量较 少, 则检测效果会较差。
虽然在本实施例中传感器 605被安装在触摸面板的触摸面上以检测触 摸面板的形变, 但传感器 605也可以安装在触摸面板的其它位置上。
例如, 图 7和图 8分别示出了图 6所示实施例的触摸系统的变形例, 它们与图 6的区别在于传感器 605在触摸面板上的安装位置不相同。 在图 7所示的变形例中, 传感器 65被安装在触摸面板的触摸面的对面, 即在触 摸面板的下面, 为了表示传感器 605安装在触摸面板的下面, 传感器 605 用虚线进行表示。 在另一个变形例中, 如图 8所示, 传感器 605被安装在 触摸面板的侧面。 此外, 传感器 605还可以安装在触摸面板的拐角处, 其 具体情况将在后面参照图 13描述。图 9给出了传感器 605在触摸面板上安 装的上述三种安装方式的示意图。
在本实施例中, 如果触摸屏 601还包括边框, 则传感器 605还可以检 测的边框的形变。 在这种情况下, 传感器 605被安装在的边框上, 例如在 边框的上表面、 下表面或侧面。
传感器 605的输出 (触摸面板或边框的形变信息)被提供给分析装置 606, 以确定触摸操作是有效触摸操作还是误触摸操作。 图 10示出了上述 实施例中的分析装置 606的一个例子的结构示意图。如图 10所示,分析装 置 606包括信号放大电路 901、 低通滤波器 902、 峰值整形电路 903、 比较 电路 904和阈值产生单元 905。 当分析装置 606从传感器 605接收表明触 摸面板或边框的形变的信号(例如电压信号)时,首先由信号放大电路 901 对该信号进行放大。 信号放大电路 901的放大倍数可根据实际情况进行调 整,通常在 30倍左右。通过信号放大电路 901放大的信号进入低通滤波器 902, 以将比有效信号的频率高的信号滤除。 通常, 有效信号小于 1KHZ。 然后, 有效信号通过峰值整形电路 903进行整形, 并提供给比较电路 904。 在比较电路 1004中,经过峰值整形后的有效信号与阈值产生单元 905所产 生的阈值(例如阈值电压信号)进行比较。 如果经过峰值整形后的有效信 号大于或等于阀值,则传感器 605输出的信号是表示有效触摸操作的信号, 此时, 比较电路 904产生有效触摸信号, 并输出该有效触摸信号, 通常有 效触摸信号为低电平信号。 如果经过峰值整形后的信号小于阈值, 则传感 器 605输出的信号是表示误触摸操作的信号, 此时, 比较电路 904不产生 有效触摸信号。 在该例子中, 通过调节阈值, 可以调节整个分析装置 606 的灵敏度。
图 11示出了上述实施例中的分析装置 606的另一个例子的结构示意 图。 如图 11所示, 唤醒装置 606包括信号放大电路 901、低通滤波器 902、 A/D转换器 906和处理器 907。 信号放大电路 901对从传感器 605输出的 表明触摸面板或边框的形变的信号进行放大, 以方便随后的处理。 信号放 大电路 901的放大倍数可根据实际情况进行调整,通常在 30倍左右。经由 信号放大电路 901放大的信号进入低通滤波器 902中, 以将有效信号之外 的高频信号滤除, 有效信号通常小于 1KHZ。 然后, A/D转换器 906将低 通滤波器 902输出的模拟信号转变成数字信号, 并提供给处理器 907。 处 理器 907对该数字化的信号的有效性进行判断, 如果信号有效, 则处理器 907输出有效触摸信号。 另外, 处理器 907也可以通过波形识别来判断信 号是否有效。
主控制装置 607分别与触摸面板和分析装置 606相连, 可接收来自分 析装置 606的有效触摸信号和来自触摸面板的图像信号, 并基于该有效触 摸信号和图像信号, 计算有效触摸操作的位置。
图 12示出了上述实施例中的主控制装置 607的一个例子。为简化起见, 图 12仅示出了相关的元件。 如图 12所示, 主控制装置 607包括主处理器 1201、 总线 1204和接口 1205。 主控制装置 607可通过接口 1205与触摸屏 601进行通信。 尽管在特定设计中可以根据需要将主控制装置 607的一些 或全部元件设置在触摸屏 601的外部, 但是主控制装置 607也可以与触摸 屏 601集成为一体。 另外, 分析装置 606也通过接口 1205与主控制装置 67中的主处理器 1201相连。
在上述的主控制装置 607中,主处理器 1201负责计算触摸物的触摸位 置, 以及基于所计算的触摸位置执行于该触摸操作相关的处理。 主处理器 1201还管理经由接口 1205与触摸面板之间的信号传输和经由总线 1204与 外部系统或设备之间的信号传输。优选地,主处理器 1201结合有数字信号 处理器( DSP )或现场可编程门阵列( FPGA )。总线 1204使主处理器 1201 能够与另一个系统或装置通信连接, 该另一个系统或装置可以是计算机设 备或与触摸屏 601协同工作的显示系统。
响应于接收到来自分析装置 606的有效触摸信号,主处理器 1201对于 该有效触摸操作, 计算触摸位置, 并执行相应的处理。 在另一种情况下,主处理器 1201也可以在触摸展 601上发生触摸操作 时, 与传感器 605检测触摸面板或边框的形变并行地计算该触摸操作的触 摸位置, 并在接收到来自分析装置 606的有效触摸信号之后, 执行与该触 摸操作相关的处理。
在图 6所示的实施例中, 虽然分析装置 606、 控制装置 607和触摸屏 601分开地设置,但分析装置 606、控制装置 607和触摸屏 601也可以集成 为一体。
图 13是根据本发明的另一个实施例的触摸系统的结构示意图。下面结 合附图, 对本实施例进行详细说明, 其中与前面实施例相同的部分, 适当 省略其说明。
与图 6所示的实施例类似,图 13所示的本实施例的触摸系统包括触摸 屏 601、 传感器 605、 分析装置 606和主控制装置 607。 然而, 在本实施例 中, 触摸屏 601是红外触摸屏。 如图 13所示, 红外触摸屏包括红外发射管 阵列 1301、 红外接收管阵列 1302、 触摸面板 1304和边框 1303, 其中触摸 面板 1304安装在边框 1303上, 如图 14所示。 红外发射管阵列 1301和红 外接收管阵列 1302位于边框 1303 的四个边上, 每一个红外发射管阵列 1301与一个红外接收管阵列 1302相对, 以形成红外网状栅格, 即红外发 射管阵列 1301和红外接收管阵列 1302组成两对红外对管阵列。 在本实施 例中, 有四个传感器 605, 分别安装在边框 1303的下表面的四个拐角处, 以检测边框 1303的形变。传感器 605可以是应变片、光纤传感器、压电传 感器中的一个或多个。 主控制装置 607分别与红外发射管阵列 1301、 红外 接收管阵列 1302、 传感器 605和分析装置 606相连, 即主控制装置 607与 两对红外对管阵列相连, 也与四个传感器 605相连。在图 12中, 分析装置 606、 主控制装置 607与边框 1303相互分离地设置, 但也可以将分析装置 606、 主控制装置 607与边框 1303—体化地设置。
另夕卜,传感器 605除了安装在触摸屏 601的边框 1303的下表面的拐角 处, 也可以安装在边框 1303的其它位置, 例如, 在边框 1303的上表面或 侧面。 图 15给出了传感器 605在边框 1303上安装的上述三种安装方式的 示意图。
另外, 本发明的上述实施例中的触^ ^还可以是电阻触摸屏、 电容触 摸屏、 投射式电容触摸屏、 表面声波触摸屏、 弯曲波触摸屏等。 当使用上 述的触摸屏时,传感器的安装位置、分析装置等基本与前面的实施例相同, 在此不再详述。
本发明并不限于上述具体实施方式中所述的实施例。 本领域的普通技 术人员根据本发明的技术方案得出的其它实施方式, 同样属于本发明的范 围。

Claims

权利要求
1. 一种在触摸系统中防止误触摸操作的方法, 包括:
当在所述触摸系统的触摸屏上发生触摸操作时, 检测所述触摸屏的触 摸面板或边框的形变;
根据所检测的所述触摸面板或边框的形变 , 确定所述触摸操作是有效 触摸操作还是误触摸操作;
当所述触摸操作是有效触摸操作时, 确定所述有效触摸操作的位置。
2. 根据权利要求 1 所述的在触摸系统中防止误触摸操作的方法, 还 包括: 基于所述有效触摸操作的位置, 执行与所述有效触摸操作相关的处 理。
3.根据权利要求 2所述的在触摸系统中防止误触摸操作的方法,其中, 所述检测所述触摸面板或边框的形变的步骤包括:
检测所述触摸面板在与所述触摸面板平行的方向上的形变; 或者 检测所述边框在与所述边框平行的方向上的形变。
4.根据权利要求 2所述的在触摸系统中防止误触摸操作的方法,其中, 所述根据所检测的所述触摸面板或边框的形变确定所述触摸操作是有效触 摸操作还是误触摸操作的步骤包括:
将表明所述形变的形变信息与预定阈值进行比较;
如果所述形变信息大于或等于所述预定阈值, 则确定所述触摸操作是 有效触摸操作; 以及
如果所述形变信息小于所述预定阈值, 则确定所述触摸操作是误触摸 操作。
5. 一种在触摸系统中防止误触摸操作的方法, 包括:
当在所述触摸系统的触摸屏上发生触摸操作时, 计算所述触摸操作的 位置;
检测所述触摸操作所引起的所述触摸屍的触摸面板或边框的形变; 根据所检测的所述触摸面板或边框的形变, 确定所述触摸操作是有效 触摸操作还是误触摸操作; 当所述触摸操作是有效触摸操作时, 基于所述有效触摸操作的位置, 执行与所述有效触摸操作相关的处理。
6.根据权利要求 5所述的在触摸系统中防止误触摸操作的方法,其中, 所述检测所述触摸面板的形变的步骤包括:
检测所述触摸面板在与所述触摸面板平行的方向上的形变。
7.根据权利要求 6所述的在触摸系统中防止误触摸操作的方法,其中, 所述根据所检测的所述触摸面板或边框的形变确定所述触摸操作是有效触 摸操作还是误触摸操作的步骤包括:
将表明所述形变的形变信息与预定阈值进行比较;
如果所述形变信息大于或等于所述预定阈值, 则确定所述触摸操作是 有效触摸操作; 以及
如果所述形变信息小于所述预定阈值, 则确定所述触摸操作是误触摸 操作。
8. 一种触摸系统, 包括:
传感器, 其在所述触摸屏上有触摸操作时检测所述触摸屏的触摸面板 或边框的形变;
分析装置, 其根据所述传感器所检测的所述触摸面板或边框的形变确 定所述触摸操作是有效触摸操作还是误触摸操作, 并在所述触摸操作是有 效触摸操作时, 响应于所述有效触摸操作, 产生有效触摸信号, 并将所述 有效触摸信号发送到主控制装置; 以及
主控制装置, 其响应于所述有效触摸信号, 确定所述有效触摸操作的 位置, 并基于所述有效触摸操作的位置, 执行与所述有效触摸操作相关的 处理。
9.根据权利要求 8所述的触摸系统, 其中, 所述传感器 变片、 光 纤传感器、 压电传感器中的一个或多个。
10. 根据权利要求 8所述的触摸系统, 其中, 所述传感器安装在所述 触摸面板的触摸面或所述触摸面的对面上。
11. 根据权利要求 10所述的触摸系统,其中,所述传感器安装在所述 触摸面的拐角处。
12. 根据权利要求 8所述的触摸系统, 其中, 所述传感器安装在所述 边框的上表面或下表面。
13. 根据权利要求 8所述的触摸系统, 其中, 所述传感器安装在所述 触摸面板或边框的侧面。
14. 根据权利要求 8至 13任意一项所述的触摸系统,其中,所述触摸 屏是电阻触摸屏、 电容触摸屏、 投射式电容触摸屏、 红外触摸屏、 光学触 摸屏、 表面声波触摸屏、 弯曲波触摸展中的一种。
PCT/CN2010/077407 2009-09-28 2010-09-28 一种在触摸系统中防止误触摸操作的方法及触摸系统 WO2011035739A1 (zh)

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