TWI638295B - Touch device and touch device recognition method - Google Patents

Abstract

A touch device includes: a touch screen, a first input device, and a processor. When the first input device contacts the touch screen at a first position with a first touch area, the touch screen generates a first event and the first input device transmits a first signal. To the touch screen. The processor is coupled to the touch screen. When the touch screen receives the first signal within a preset time and determines that the first touch area is greater than a first area threshold, the touch screen is displayed. The first event is determined to belong to the first input device and the first position is the starting position of the first input device.

Description

Touch device and touch device identification method

The present invention relates to a touch device and a touch device identification method, and more particularly to a touch device and a touch device identification method for determining an input device.

In general, users can input text or graphics on the touch panel through touch devices. Common touch devices are stylus and dial controls, and stylus and dial controls are used for two touch screens. The active input device has a stylus pen shape and a dial button shape, and both can be contacted with the touch panel to leave a touch track. However, if two or more different touch devices are in contact with the touch panel at the same time, the touch panel cannot distinguish which touch device belongs to the touch device, which may cause misrepresentation of the handwriting. If the handwriting is misjudged, the user may touch The control panel experience is poor.

Therefore, how to provide a touch device and a touch device identification method to identify which touch track is a touch device has become one of the problems to be improved in the field.

To solve the above problems, an aspect of the present invention provides a touch device including: a touch screen, a first input device, and a processor. When the first input device contacts the touch screen at a first position with a first touch area, the touch screen generates a first event and the first input device transmits a first signal. To the touch screen. The processor is coupled to the touch screen. When the touch screen receives the first signal within a preset time and determines that the first touch area is greater than a first area threshold, the touch screen is displayed. The first event is determined to belong to the first input device and the first position is the starting position of the first input device.

Another aspect of the present invention provides a touch device identification method, including: at a first start time, a first input device contacts the touch screen in a first position with a first touch area; Generating a first event by the touch screen; transmitting a first signal to the touch screen by the first input device; and when the touch screen is at a preset time from the first start time When the first signal is received, the first touch area is determined by the processor to be greater than a first area threshold, and the first event is determined to belong to the first input device and the first position is the first The starting position of an input device.

In summary, the touch device and the touch device identification method of the present invention facilitate identification of which touch device the touch track belongs to, and allow the user to have better user experience with the touch panel.

The embodiments are described in detail below with reference to the accompanying drawings, but the embodiments are not intended to limit the scope of the invention, and the description of structural operations is not intended to limit the order of execution thereof The structure, which produces equal devices, is within the scope of the present invention. In addition, the drawings are for illustrative purposes only and are not drawn to the original dimensions. For ease of understanding, the same elements in the following description will be denoted by the same reference numerals.

The terms "first", "second", etc., used herein are not intended to refer to the order or order, nor are they intended to limit the invention, only to distinguish between elements or operations described in the same technical terms. Only. Please refer to FIG. 1 and FIG. 2A to FIG. 2B. FIG. 1 is a flow chart of a touch device identification method 100 according to an embodiment of the invention. 2A-2B are schematic diagrams showing a usage scenario of a touch device 200 according to an embodiment of the invention.

In one embodiment, the touch device 200 includes a touch screen DP, a first input device QD, and a processor (not shown). The processor is coupled to the touch screen DP.

In one embodiment, the touch screen is an optical touch screen.

In an embodiment, the processor may be a micro control unit, a microprocessor, a digital signal processor, an application specific integrated circuit (ASIC), or a logic circuit. To achieve it.

In one embodiment, as shown in FIG. 2A, the first input device QD is a dial-shaped dial control. In an embodiment, as shown in FIG. 2B, when the first input device QD is placed on the touch screen DP, a plurality of tool column areas RG surrounding the touch screen DP around the first input device QD are displayed. Quick selection tools F1~F3, these quick selection tools F1~F3 can provide users with more support and convenience when drawing, editing files or operating on the control screen DP. In an embodiment, the first input device QD is a cylinder or a circular body.

In the following embodiments, the first input device QD is exemplified as a dial-shaped dial control, and the second input device QP is exemplified as a stylus for convenience of explanation. However, it should be understood by those skilled in the art that the present invention is not limited thereto, and the first input device QD and the second input device QP may respectively be, for example, different styluses or other types for inputting touch signals to touch. A device on a controlled screen DP.

In one embodiment, the first input device QD is an active device. When the first input device QD is in contact with the touch screen DP, the first input device QD transmits a signal to the touch screen DP. In one embodiment, the second input device QP is an active device. When the second input device QP is in contact with the touch screen DP, the second input device QP transmits a signal to the touch screen DP.

In step 110, a first input device QD contacts the touch screen DP at a first position with a first touch area.

In an embodiment, when the first start time is the time parameter 701, the processor obtains the first input device QD with a first touch area of 7 pixels, and the contact position is at the first position, and the first position is, for example, The touch screen detected by the processor is touched by a target position.

In step 120, the touch screen DP generates a first event.

In one embodiment, the touch screen DP generates a first event according to the first touch area, the first position, and the first start time.

In step 130, the first input device QD transmits a first signal to the touch screen DP, and the first signal includes a first identification code.

In an embodiment, the processor can learn from the first signal that the first input device QD is a dial control instead of a stylus.

In an embodiment, the processor specifies the first identification code (eg, the first identification code is designated as 2) according to the first touch area, the first start time, and the content of the first signal, and corresponds to the first input device QD. When an input device does not leave the touch screen DP, the touch screen DP displays a pattern relative to the first input device QD corresponding to the starting position. In one embodiment, the pattern is, for example, a quick-selection tool F1~F3 shown in FIG. 2B or a movement trajectory of the first input device QD.

In step 140, when the touch screen DP receives the first signal within a preset time (for example, 10 microseconds) from the first start time, and the processor determines the first touch area (for example, 7 pixels) When the threshold is greater than a first area (for example, the processor presets the first area threshold to 6 pixels), the first event is determined to belong to the first input device QD (eg, a dial control) and is first in the first position. Enter the starting position of the device QD.

By setting the threshold of the first area, it can be determined whether the current touch area belongs to the first input device QD or other touch devices.

In this embodiment, the touch area of the stylus is usually less than 6 pixels (this value is only used as an example, and can be adjusted according to actual implementation), and the touch area of the dial control is usually greater than 6 pixels, so the processor is used. It is determined that the first touch area (for example, 7 pixels) is greater than a first area threshold, and it can be confirmed that the first input device QD is a dial control instead of a stylus.

In one embodiment, the touch area (eg, 7 pixels) of the first input device QD touching the touch screen control screen DP during a touch time is less than or equal to a second area threshold (eg, a processor). When the second area threshold is preset to 20 pixels, these touches are ignored. In an embodiment, when the first input device QD touches the touch screen, the touch area (for example, 7 pixels) is greater than the second area threshold (for example, the processor presets the second area threshold to 3 pixels). When, the first event is generated.

By setting the second area threshold, it is possible to filter or ignore inappropriate mis-touch situations.

As shown in FIG. 3, FIG. 3 is a schematic diagram showing touch areas A, B, and C according to an embodiment of the invention. In this embodiment, it is assumed that the touch area of the general dial control is usually greater than 20 pixels. When the first input device QD touches the touch area of the touch screen control screen DP during a touch time (for example, 7) When the pixel is less than or equal to 20 pixels, it means that the touch may be a false touch. Therefore, in the third figure, the touch area A is 7 pixels, the touch area B is 25 pixels, and the touch area C is 3 pixels. Since the touch area A and the touch area C are less than 20 pixels, the touch area is A and touch area C may be false touches, so the two touch information is ignored.

Please refer to FIG. 4 , which illustrates a schematic diagram of another usage scenario of the touch device 200 according to an embodiment of the invention. In an embodiment, when the first input device QD has been placed on the touch screen DP before the time parameter is 701, the second input device QP (for example, a stylus) is at a second start. The time (for example, the time parameter is 710), when the second touch area is in contact with the touch screen DP in a second position, the touch screen DP generates a second event, and the second input device QP transmits a second time. The signal to the touch screen DP, the first touch area (refer to the touch area of the first input device QD) is greater than the second touch area (refer to the touch area of the second input device QP), when the touch screen DP Receiving the second signal within a preset time (for example, 10 microseconds) from the second start time and determining that the second touch area is smaller than the first area threshold, determining that the second event belongs to the second input device QP And the second position is the starting position of the second input device QP.

In an embodiment, the first start time and the second start time are the same time, for example, the first input device QD and the second input device QP are simultaneously placed on the touch screen DP.

In an embodiment, the processor can learn from the second signal that the second input device QP is a stylus instead of a dial control.

In one embodiment, the touch that occurs within a preset time (for example, 10 microseconds) is determined to be the same touch (for example, the same stroke) in which the touch is continuous, and is not another touch track. After the next stroke, after another 3 seconds, another stroke is drawn, and the touch has exceeded the preset time. In this case, it may be different strokes, different touch devices or touches, which are not considered to be the same. Pen touch.

In an embodiment, the second signal includes a second identification code (eg, the processor sets the second identification code to 1), and the processor is configured to specify that the second identification code corresponds to the second input device QP, and when the second input device is QP Without moving away from the touch screen DP and moving the second input device QP relative to the surface of the touch screen DP, the touch screen DP displays a moving track of the second input device DP (for example, the handwriting of the stylus) corresponding to the starting position. .

In an embodiment, the processor is further configured to calculate a difference between the start time (eg, the time parameter is 701) and the second start time (eg, the time parameter is 710) (eg, 9), if the difference is greater than the pre- Setting a time (for example, 5 unit time), when the processor receives the first signal, determining that the first event belongs to the first input device QD, and when the processor receives the second signal, determining that the second event belongs to the second Input device QP.

In one embodiment, the touch device 200 includes a storage device (not shown) for storing a first identification code corresponding to the first event, a second identification code corresponding to the second event, and corresponding to the first event. The first start time, the second start time corresponding to the second event, the first touch area corresponding to the first event, and the second touch area corresponding to the second event.

FIG. 5 is a flow chart of a touch device identification method 500 according to an embodiment of the invention.

In step 510, the touch screen DP receives a current touch area at a current position at a current start time.

In step 520, the storage device stores the current start time, the current location, and the current touch area.

In step 530, the processor calculates whether the difference between the current start time and the previous touch time is greater than a preset time. If yes, the current touch area is not related to the previous touch area. Therefore, the process proceeds to step 540. In step 540, the current touch area is regarded as a false touch; if not, the process proceeds to step 550.

In step 550, the processor transmits a current signal to the touch screen DP according to a current input device to determine that the current input device is a stylus or a dial control. If it is determined that the current input device is a stylus, the process proceeds to step 560. In step 560, the current touch area is mapped to the identification code of a stylus event, and the process proceeds to step 570 to treat the current touch area as a stylus. If the current input device is a dial control, the process proceeds to step 580, the processor determines whether the current touch area is greater than a pixel threshold, and if the current touch area is greater than the pixel threshold, the process proceeds to step 590. In step 590, the current touch area is corresponding to the identification code of a dial control event, and the process proceeds to step 595, where the current touch area is regarded as the touch behavior of the dial control, and if it is determined that the current touch area is not greater than the pixel threshold, then Go to step 540 to treat the current touch area as a false touch.

In summary, the touch device and the touch device identification method of the present invention facilitate identification of which touch device the touch track belongs to, and allow the user to have better user experience with the touch panel.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100, 500‧‧‧ touch device identification method

110~140, 510~595‧‧‧ steps

200‧‧‧Touch device

DP‧‧‧ touch screen

QD‧‧‧first input device

DP‧‧‧ touch screen

RG‧‧‧Tools area

F1~F3‧‧‧Quick selection tool

A, B, C‧‧‧ touch area

The above and other objects, features, advantages and embodiments of the present invention can be more clearly understood. The description of the drawings is as follows: FIG. 1 illustrates a flow of a touch device identification method according to an embodiment of the invention. 2A-2B are schematic diagrams showing a usage scenario of a touch device according to an embodiment of the invention; FIG. 3 is a schematic diagram showing a touch area according to an embodiment of the invention; One embodiment of the present invention is a schematic diagram of another usage scenario of a touch-sensitive device; FIG. 5 is a flow chart showing a method for identifying a touch device according to an embodiment of the invention.

Claims (10)

A touch-sensitive device includes: a touch screen; a first input device, when a first touch time contacts a touch screen in a first position at a first start time, the touch The screen generates a first event and the first input device transmits a first signal to the touch screen; and a processor coupled to the touch screen, when the touch screen is at the first start Receiving the first signal within a preset time and determining that the first touch area is greater than a first area threshold, the processor determines that the first event belongs to the first input device and A position is the starting position of the first input device. The touch device of claim 1, wherein the first input device ignores the touch when the touch area of the touch screen is less than or equal to a second area threshold during a touch time The first event is generated when the touch area of the first input device touching the touch screen is greater than the second area threshold. The touch device of claim 1, wherein the first signal includes a first identification code, the processor is configured to specify that the first identification code corresponds to the first input device, and when the first input device does not leave the In the touch screen, the touch screen displays a pattern relative to the first input device corresponding to the starting position. The touch device of claim 1, further comprising: a second input device for contacting the touch screen with a second touch area and a second position during a second start time The touch screen generates a second event, the second input device transmits a second signal to the touch screen, the first touch area is greater than the second touch area, when the touch screen is in the Receiving the second signal within the preset time and determining that the second touch area is smaller than the first area threshold value, determining that the second event belongs to the second input device and The second position is the starting position of the second input device. The touch device of claim 4, wherein the second signal includes a second identification code, the processor is configured to specify the second identification code corresponding to the second input device, when the second input device does not leave the The touch screen is moved relative to the surface of the touch screen, and the touch screen displays a moving track of the second input device corresponding to the starting position. The touch device of claim 4, wherein the processor is further configured to calculate a difference between the first start time and the second start time, and if the difference is greater than the preset time, when the process is When receiving the first signal, the device determines that the first event belongs to the first input device, and when the processor receives the second signal, determines that the second event belongs to the second input device. The touch device of claim 3, further comprising: a storage device configured to store the first identification code corresponding to the first event, a second identification code corresponding to a second event, corresponding to The first start time of the first event, a second start time corresponding to the second event, the first touch area corresponding to the first event, and a second touch area corresponding to the second event. A touch device identification method includes: at a first start time, a first input device contacts the touch screen at a first position with a first touch area; and the touch screen is generated by the touch screen a first event; transmitting, by the first input device, a first signal to the touch screen; and when the touch screen receives the first signal within a preset time from the first start time And determining, by a processor, that the first touch area is greater than a first area threshold, determining that the first event belongs to the first input device and using the first position as a starting position of the first input device. The touch device identification method of claim 8, further comprising: contacting, by the second input device, a second touch area with a second touch area at a second position to contact the touch During the screen, the touch screen generates a second event, and the second input device transmits a second signal to the touch screen. The first touch area is greater than the second touch area. Receiving the second signal within the preset time from the second start time and determining that the second touch area is smaller than the first area threshold, determining that the second event belongs to the second input device and The second position is the starting position of the second input device. The touch device identification method of claim 9, wherein the second signal includes a second identification code, the processor is configured to specify the second identification code corresponding to the second input device, and when the second input device does not leave The touch screen is moved relative to the surface of the touch screen, and the touch screen displays a moving track of the second input device corresponding to the starting position.