TW201734747A - Operating method of touch device and setting method for functionality of the same - Google Patents

Abstract

An operating method of touch device applicable for a capacitive touch panel operated with a stylus includes the steps of: detecting a plurality of capacitance values corresponding to a plurality of sensing units of the capacitive touch panel, determining a nib position and a penholder position based on a distribution pattern of the plurality of capacitance values, and selectively enabling a preset function based on the nib position and the penholder position.

Description

Touch device operation method and function setting method thereof

The invention relates to a method for operating a touch device and a function setting method thereof, and particularly relates to a method for operating a capacitive touch device with a stylus and a function setting method thereof.

In recent years, touch devices have been widely used as a variety of electronic devices as a convenient input device. However, when the stylus operates the touch device, some of the non-preset functions are functions that the user often has to use. For example, the wiping/clearing function during painting, and the replacement of the stroke function. This type of function often has to be activated by clicking the window menu, which is inconvenient for high-end users.

The invention provides a method for operating a touch device and a function setting method thereof. The preset function is selectively activated by detecting the operational mode of the stylus relative to the touch device.

A touch device operating method according to an embodiment of the present invention is suitable for a capacitive touch panel operated by a stylus. The method includes the following steps: detecting multiple sensing units of the capacitive touch panel Capacitance value. The position of the tip of the stylus and the position of the pen body are determined according to the distribution pattern of the plurality of capacitance values. The preset function is selectively activated according to the position of the pen tip and the position of the pen body.

According to an embodiment of the present invention, a touch device function setting method is suitable for a capacitive touch panel operated by a stylus. The method includes the following steps: when the touch device is in the setting mode, performing the following steps: detecting A plurality of capacitance values corresponding to the plurality of sensing units of the capacitive touch panel. The stylus pen tip position and the pen body position are determined according to the distribution pattern of the plurality of capacitance values to generate a stylus type feature value. Determine if a setting command has been received. When a setting command is received, a function is set corresponding to the aforementioned stylus type feature value.

By detecting the shape feature value obtained by detecting the position of the pen tip and the position of the pen body, the touch device can find out whether there is a function corresponding to the already set function, and activate the corresponding function, so the user does not need to search in a multi-step manner. And start this corresponding function. Thereby, the convenience of using the touch device is improved.

The above description of the disclosure and the following description of the embodiments of the present invention are intended to illustrate and explain the spirit and principles of the invention, and to provide further explanation of the scope of the invention.

The detailed features and advantages of the present invention are set forth in the Detailed Description of the Detailed Description of the <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> <RTIgt; The objects and advantages associated with the present invention can be readily understood by those skilled in the art. The following examples are intended to describe the present invention in further detail, but are not intended to limit the scope of the invention.

1 and FIG. 2, FIG. 1 is a schematic diagram of a touch device and a stylus according to an embodiment of the invention, and FIG. 2 is a configuration of a scan line and a receiving line in a touch device according to an embodiment of the invention. schematic diagram. As shown in FIG. 1 , the method disclosed in the present disclosure is applicable to a touch device 200 that is operated by a stylus 100. The touch device 200 is a capacitive touch device or a projected capacitive touch device. For example, the touch device 200 is a projected capacitive touch device. As shown in FIG. 2, the touch device 200 has an embedded controller 210 (EC), m scanning lines Tx_1 to Tx_m, and n receiving lines. Rx_1 to Rx_n, where m and n are integers greater than one. For example, the scan line Tx_1 to the scan line Tx_m are all arranged in parallel to the X axis, and the receive line Rx_1 to the receive line Rx_n are all aligned parallel to the Y axis. The intersection of the scan line Tx_i and the reception line Rx_j defines one sensing unit S_ij, so that the touch device 200 has m*n sensing units. For convenience of description, the touch device of FIG. 2 (the scanning line and the receiving line are arranged in a checkerboard shape) is illustrated, but the invention is not limited thereto, and can be applied to other structures of the touch device.

Please refer to FIG. 3 , which is a flowchart of a method for setting a function of a touch device according to an embodiment of the invention. As shown in FIG. 3, the method includes the following steps: determining, according to step S310, whether the touch device is in the setting mode. When the touch device is in the setting mode, as described in step S320, a plurality of capacitance values corresponding to the plurality of sensing units of the capacitive touch panel are detected. Then, as described in step S330, determining the position of the tip of the stylus and the position of the pen body according to the distribution pattern of the plurality of capacitance values to generate a stylus type feature value. Further, as described in step S340, it is determined whether a setting command is received. When the setting command is received, as described in step S350, a function is set corresponding to the stylus type feature value.

Please refer to FIG. 4 , which illustrates the influence of the position of the stylus relative to the touch device on the capacitance value of the sensing unit. As shown in FIG. 4 , when the stylus 100 is located on the upper surface (touch surface) of the touch device 200 , the metal components on the stylus 100 such as the pen tip 110 and the metal pen body 120 and the touch device A coupling capacitance is formed between the sensing unit S_ij formed by the i-th scanning line Tx_i and the j-th receiving line Rx_j in 200. Taking the example of FIG. 4 as an example, the capacitance values of the sensing unit S_31 to the sensing unit S_39 on the third scanning line Tx_3 rise due to the coupling capacitance. For example, if the preset capacitance values of the sensing units are 1 microfarad, the capacitance value of the sensing unit S_31 corresponding to the nib 110 may rise to 1.5 microfarads due to the coupling capacitance, and corresponds to the metal pen. The capacitance values of the sensing unit S_33 to the sensing unit S_39 of the body 120 also have different degrees of increase.

Referring back to FIG. 2, the embedded controller 210 of the touch device 200 is electrically connected to each of the scan lines Tx_1 to Tx_m and the respective receive lines Rx_1 to Rx_n, so the embedded controller 210 is substantially connected to each of the sensing units S_11. The sensing unit S_mn is electrically connected. In an embodiment, the embedded controller 210 detects the capacitance values of the respective sensing units. In an embodiment, when the embedded controller 210 obtains the distribution pattern of the capacitance values of the sensing units, the embedded controller 210 selects the sensing units whose capacitance values are lower than the first threshold according to the first threshold value. The sensed value output is zero, and the sensed value of each sensing unit whose capacitance value exceeds the first threshold value is output as one. Thus, the embedded controller 210 obtains a binarized sensed value distribution pattern, as shown in FIG. 5 and FIG. 6, wherein FIG. 5 is a capacitance value distribution pattern according to an embodiment of the present invention, and FIG. 6 is based on the present invention. The sensed value distribution pattern of the embodiment. From FIG. 5, the capacitance value distribution of each sensing unit S_11 to the sensing unit S_mn can be obtained, as shown in FIG. 5, n (row number)=10, m (column number)=12, and the capacitance value of the sensing unit S_11 is 100. The capacitance of the sensing unit S_62 is 150. In this embodiment, the first threshold is set to 110. When the sensing value of the sensing unit is greater than 110, the sensing value of the sensing unit is 1; otherwise, the sensing value of the sensing unit is 0. Therefore, it can be seen from FIG. 6 that the sensing value of the sensing unit S_11 is 0, and the sensing value of the sensing unit S_62 is 1. In another embodiment, the embedded controller 210 transmits a coordinate value of each sensing unit having a capacitance value higher than the first threshold to a processor (not shown) of the touch device 200, and the processor is based on These coordinate values can reproduce the sensed value distribution pattern as shown in FIG. In still another embodiment, the embedded controller 210 directly transmits the capacitance values of the sensing units to the processor, and the processor performs the foregoing processing.

Referring back to FIG. 3, in step S330, the touch device 200 can further determine the nib position and the pen position of the stylus pen 100 by the above processing. The position of the pen body is related to the three-dimensional position of the metal pen body 120 of the stylus pen 100 on the upper surface of the touch device, that is, the position of the metal pen body 120 for the orthographic projection of the upper surface of the touch device 200, and the metal pen Information such as the distance between the two ends of the body 120 relative to the upper surface of the touch device 200. As such, the touch device 200 obtains the eigenvalue of the stylus. In an embodiment, after determining the type feature value, the touch device 200 generates a first prompt signal to instruct the user to input a setting command. Then, the touch device 200 waits for the user to input a setting command within a preset time interval, and the preset time interval is, for example, 30 seconds. In one embodiment, if the user does not input a setting command to the touch device 200 within 30 seconds, the touch device 200 leaves the setting mode. In another embodiment, if the user does not input a setting command to the touch device 200 within 30 seconds, the touch device 200 generates a second prompt signal to prompt the user to reset the function. The touch device 200 waits for a period of time after generating the second prompt signal. If the user does not receive the command to reset the user, the touch device 200 leaves the setting mode. If the user chooses to reset during this time, the process returns to the aforementioned step S320. The aforementioned commands that can be set, such as starting a clear function, switching a stroke, switching colors, switching modes (edit mode or browsing mode), and the like. This is for the purpose of illustration and not limitation.

In another embodiment of the present invention, a touch device operation method is disclosed. The touch device operation method is suitable for a capacitive touch panel operated by a stylus. Referring to FIG. 7, according to the present invention, Flow chart of the operation method of the touch device. As shown in FIG. 7 , a method for operating a touch device according to an embodiment of the present invention includes the following steps: detecting a plurality of capacitance values of a plurality of sensing units of a capacitive touch panel as shown in step S710. Then, as shown in step S720, the pen tip position and the pen body position of the stylus are determined according to the distribution pattern of the plurality of capacitance values. Then, as shown in step S730, the preset function is selectively activated according to the position of the pen tip and the position of the pen body.

The operations in steps S710 and S720 are substantially as shown in the corresponding steps in the flowchart of FIG. In an embodiment, after the distribution pattern is obtained in step S720, a palm rejection program is further performed to obtain a nib position and a pen position. Please refer to FIG. 8 for the palm error detection filtering procedure, which is a flow chart of the palm error detection filtering program according to an embodiment of the present invention. As shown in FIG. 8, the palm false touch filtering program according to an embodiment of the present invention includes the following steps: as shown in step S810, in the selected distribution pattern, the coordinate having the largest capacitance value is the tip position. Next, as shown in step S820, one of a plurality of touch groups in the distribution pattern is selected. Further, as shown in step S830, it is determined whether the extending direction of the selected touch group corresponds to the nib position. When the extending direction does not correspond to the nib position, as shown in step S840, the selected touch group is filtered out. On the other hand, when the extending direction corresponds to the position of the pen tip, as shown in step S850, the position of the pen body is calculated with the selected touch group.

Specifically, please refer to FIG. 9 , which is a schematic diagram of a capacitance value distribution diagram of each sensing unit of the touch device according to an embodiment of the invention. As shown in FIG. 9, each of the capacitance values in the block A, the block B, the block C, and the block D in the capacitance value distribution pattern is greater than the first threshold value. Each block may partially overlap each other, and each block is approximated by a circle or an ellipse. Block A has the largest one of all capacitance values, so block A is judged to be the tip position. The ratio of the major axis to the minor axis of the block B is smaller than the second threshold value, so that it is actually close to a circle, which is not the result of the projection of the metal pen body 120 on the touch device. The ratio of the major axis to the minor axis of block C and block D are both greater than the second threshold. However, the direction of the long axis of block C does not point/correspond to block A, so it should not be projected by metal pen 120. The result produced on the touch device. In summary, the block B and the block C are filtered out, and the touch device obtains the position of the pen tip according to the position and distribution of the block A, and obtains the position of the pen body according to the position and distribution of the block D, thereby obtaining The type characteristic value of the stylus. In this embodiment, the second threshold is 1.2, so as to filter the sensing block that is approximately equal to or equal to the circular shape, but the invention is not limited thereto, such as when the sensing block of the perfect circle needs to be filtered. The second threshold can be set to 1.0. When the approximate or circular sensing block is excluded, the most appropriate block is selected as the morphological feature value of the stylus based on the position of the pen tip. Specifically, each sensing block is approximately equal to or equal to an elliptical shape, and defines a long axis and a short axis of each sensing block, and the long axis direction of each sensing block is analogous to each sensing area. The direction in which the block extends. When the extending direction of the sensing block can be aligned, aligned or pointed to the position of the pen tip, the sensing block can be regarded as the morphological feature value of the stylus, as shown in block D of FIG. 9; and the extension of the sensing block When the direction cannot be aligned, aligned or pointed to the nib position, its sensing block is filtered, as shown in block C of Figure 9.

In an embodiment, after obtaining the eigenvalue of the stylus, the touch device determines whether the eigenvalue of the styling corresponds to a function that has been set. If such a type feature value corresponds to a function that has been set, the touch device generates a prompt signal to prompt the user to preset the function corresponding to the type feature value of the current stylus. This preset function is activated when a confirmation signal from the user is received. For example, when the preset function is a stroke setting or clearing function, the touch device generates a menu to prompt the user that the current function is a stroke setting or a clear function, and at the same time, the user selects multiple types of setting of the stroke setting. Value or clear multiple area settings for the function. After receiving the user's selection command, the touch device activates the preset function according to the type setting value or the area setting value selected by the user.

Specifically, in an embodiment, when the touch device has learned the type characteristic value of the stylus, the morphological feature value (the first type feature value) may be prompted to start the clear function, and the user is prompted. The area of the data to be cleared can be selected through the stylus. The user can select the data area through the tip of the stylus and the pen body, so that a larger clearing area can be selected in a short time, as shown in FIG. 10 , which is a schematic diagram of the operation of the stylus according to an embodiment of the invention. . At this time, the touch device can also learn another type of feature value (second type feature value) through the flow of FIG. 7 or FIG. 8 , and then prompt the user whether the area of the type feature value is desired. Clear the area. When the touch device receives the confirmation signal from the user, the data of the area is cleared. In this embodiment, the large-area selection of the pen tip and the pen body at the same time can save time and operate more intelligently.

In another extended embodiment, when the touch device acquires the second type feature value and the confirmation signal of the user has not been received, the touch device may acquire another type feature value (third type feature value). . When the area where the second type feature value is selected or corresponding to the third type feature value is different, the prompt is re-issued to prompt the user whether the area of the type feature value is the area to be cleared. Therefore, when the area selected by the second type feature value is not the area that the user wants to clear, the user can easily move the stylus (pen tip + pen body). For example, the user can move the touch horizontally. Select the area to be cleared by pen, or enlarge or reduce the area to be cleared by moving the stylus vertically. The horizontal and vertical movements described here are based on the touch panel, such as away from or close to the touch panel. Move vertically.

The touch device function setting method and operation method disclosed in the above embodiments of the present invention provide a convenient function starting mode for the user. Therefore, the user does not need to cumbersomely search for the functions commonly used in the interface of the touch device and select the function. The user can correspondingly activate the set function by simply setting the stylus pen to a preset manner, such as a stroke setting or a clear (wipe) function.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. It is within the scope of the invention to be modified and modified without departing from the spirit and scope of the invention. Please refer to the attached patent application for the scope of protection defined by the present invention.

100‧‧‧ stylus
110‧‧‧ nib
120‧‧‧Metal pen body
200‧‧‧ touch device
210‧‧‧ embedded controller
Tx_1~Tx_m‧‧‧ scan line
Rx_1~Rx_n‧‧‧ receiving line
S_11~S_mn‧‧‧Sensor unit
Block A~D‧‧‧

FIG. 1 is a schematic diagram of a touch device and a stylus according to an embodiment of the invention. 2 is a schematic diagram showing the arrangement of scan lines and receiving lines in a touch device according to an embodiment of the invention. 3 is a flow chart of a method for setting a function of a touch device according to an embodiment of the invention. FIG. 4 is a diagram for explaining the influence of the position of the stylus relative to the touch device on the capacitance value of the sensing unit. Figure 5 is a graph of capacitance value distribution in accordance with an embodiment of the present invention. Figure 6 is a graph of a sensed value distribution in accordance with an embodiment of the present invention. 7 is a flow chart of a method of operating a touch device in accordance with the present invention. FIG. 8 is a flow chart of a palm false touch filtering process according to an embodiment of the present invention. FIG. 9 is a schematic diagram of a capacitance value distribution diagram of each sensing unit of the touch device according to an embodiment of the invention. FIG. 10 is a schematic diagram of operation of a stylus according to an embodiment of the invention.

Claims (10)

A method of operating a touch device, which is suitable for a capacitive touch panel operated by a stylus, the method comprising: detecting a plurality of capacitance values of the plurality of sensing units of the capacitive touch panel; a distribution pattern of the capacitance values, determining a tip position of the stylus and a body position of the stylus; and selectively starting a preset function according to the position of the pen tip and the position of the pen body. The method of claim 1, wherein the step of determining the position of the nib and the position of the pen body according to the distribution pattern of the capacitance values comprises: comparing, for each of the sensing units, the corresponding capacitance value and a first threshold value; when the corresponding capacitance value is higher than the first threshold value, recording a calibration value corresponding to the sensing unit; and obtaining the distribution pattern according to the coordinate values recorded. The method of item 2, wherein after the step of obtaining the distribution pattern, comprising: performing a palm rejection program to obtain the nib position and the pen position. The method of claim 3, wherein the palm touch filter program comprises: selecting the one of the distribution patterns, the one having the largest capacitance value is marked as the nib position; and selecting the plurality of touch groups in the distribution pattern Determining whether an extended direction of the selected touch group corresponds to the tip position; when the extending direction does not correspond to the tip position, filtering the selected touch group; and when the extending direction Corresponding to the nib position, the pen position is calculated with the selected touch group. The method of claim 4, wherein when the ratio of the selected long axis of the touch group to the selected short axis of the touch group is less than a second threshold value, the selected one is filtered out Touch the group. The method of claim 1, wherein before the selectively starting the function, the method includes: generating a prompt signal to prompt a user of the preset function; and when receiving an acknowledgement signal, starting the preset Set the function. The method of claim 1, wherein the preset function is a touch setting or a clear function, and before selectively starting the preset function, the method comprises: generating a menu for a user to select the stroke setting The plurality of type setting values or the plurality of area setting values of the clearing function; and starting the preset function according to the type setting value or the area setting value selected by the user. A touch device function setting method is suitable for a capacitive touch panel operated by a stylus. The method includes: when the touch device is in a setting mode, performing the following steps: detecting the capacitive touch a plurality of capacitance values of the plurality of sensing units of the control panel; determining, according to a distribution pattern of the capacitance values, a tip position of the stylus and a body position of the stylus to generate a stylus type State characteristic value; determining whether a setting instruction is received; and when receiving the setting instruction, setting a function corresponding to the stylus type feature value. The method of claim 8, before the step of receiving the setting instruction, further comprising: generating a first prompt signal to instruct a user to input the setting instruction; and, after generating the first prompt signal, a preset When the setting command is not received within the time interval, the setting mode is selectively left. The method of claim 9, wherein the step of selectively leaving the setting mode comprises: generating a second prompt signal to prompt the user to reset the function; when the user selects to reset, returning Detecting the capacitance values of the sensing units of the capacitive touch panel; and leaving the setting mode when the user does not receive the reset after receiving the second prompt signal for a period of time .