TWI796055B - Proximity off-screen method and handheld device based on touch sensing - Google Patents

Abstract

A method for approaching the screen off based on touch sensing, characterized in that: in the call mode of the mobile phone, the acceleration sensor of the mobile phone is used to detect the acceleration of the mobile phone; when the acceleration exceeds a threshold, the sensitivity of the touch screen is increased , and when the touch screen detects that a sensing value is higher than a sensing threshold according to the increased sensing sensitivity, the touch screen is turned off, thereby saving power consumption and preventing false touches of the touch screen by ears.

Description

Proximity Screen Off Method and Handheld Device Based on Touch Sensing

The present invention relates to a method for approaching the screen of a handheld device, in particular to a method for approaching the screen of a handheld device based on touch sensing.

Smartphones have become an indispensable electronic product in our daily life. When people use their smartphones to make calls, their ears will be close to the screen, which may result in false touches during the call.

In order to solve the above problems, some smart phones will set an infrared sensor on the top of the screen. When the infrared sensor senses a blocking state, it will think that there is an object approaching, and when it does not sense the blocking state, it will think that there is no object approaching. . When the infrared sensor senses that an object is approaching and the smart phone is talking, the smart phone will turn off the touch screen to prevent accidental touches during the call.

However, setting an infrared sensor on the top of the screen will increase the hardware cost, and it is difficult to configure it in a borderless mobile phone screen.

In order to solve the above-mentioned problems, there is an urgent need in the art for a novel mobile phone near-screen-off solution.

The main purpose of the present invention is to disclose a method of approaching the screen off based on touch sensing, which can detect the acceleration of the mobile phone by the acceleration sensor of the mobile phone in the call mode of the mobile phone, so that when the user holds the mobile phone to the ear During the process, the sensing sensitivity of the touch screen is increased to detect the approach of the face and turn off the touch screen accordingly, so as to avoid the false touch of the ear to the touch screen.

Another object of the present invention is to disclose a hand-held device, which can prevent the ear from accidentally touching the touch screen in the call mode of the mobile phone through the aforementioned touch-sensing-based approach to screen-off method.

In order to achieve the aforementioned purpose, a touch-sensitive approach-based off-screen method is proposed, which is characterized in that:

Detecting the acceleration of the handheld device by an acceleration sensor of the handheld device in the talk mode of the handheld device; and

When the acceleration exceeds a threshold, the touch screen of the handheld device forms a proximity sensing unit, and when the proximity sensing unit detects that a sensing value is higher than a sensing threshold, the touch screen is turned off, thereby preventing the ear A false touch has occurred on the touch screen.

In one embodiment, the proximity sensing unit is formed by connecting a plurality of sensing electrodes of the touch screen in parallel.

In one embodiment, the proximity sensing unit is formed by jumping a plurality of sensing electrodes of the touch screen.

In one embodiment, the handheld device is a smart phone.

In one embodiment, the touch screen is a capacitive touch screen.

In order to achieve the aforementioned purpose, the present invention further proposes a handheld device, which has a control circuit to perform a touch-sensitive approach-based off-screen method, the method is characterized in that:

detecting the acceleration of the handheld device by an acceleration sensor of the handheld device in a call mode of the handheld device; and

When the acceleration exceeds a threshold, the touch screen of the handheld device forms a proximity sensing unit, and when the proximity sensing unit detects that a sensing value is higher than a sensing threshold, the touch screen is turned off, thereby preventing the ear A false touch has occurred on the touch screen.

In one embodiment, the proximity sensing unit is formed by connecting a plurality of sensing electrodes of the touch screen in parallel.

In one embodiment, the proximity sensing unit is formed by jumping a plurality of sensing electrodes of the touch screen.

In one embodiment, the handheld device is a smart phone.

In one embodiment, the touch screen is a capacitive touch screen.

In order to enable your review committee members to further understand the structure, features and purpose of the present invention, drawings and detailed descriptions of preferred specific embodiments are hereby attached.

Please refer to FIG. 1 , which shows a block diagram of an embodiment of the handheld device of the present invention. As shown in Figure 1, a handheld device 100, which can be a smart phone, has a control unit 110, an acceleration sensor 120 and a touch screen 130, wherein the acceleration sensor 120 is used to detect the hand-held The acceleration of the device 100, the touch screen 130 is used to provide display function and capacitive touch function, and the touch screen 130 has a display module and a capacitive sensing electrode array (not shown in the figure), the display module It can be a micro light emitting diode display module, a mini light emitting diode display module, a quantum dot light emitting diode display module or an organic light emitting diode display module.

The control unit 110 includes a processor for receiving acceleration signals from the acceleration sensor 120 and driving the touch screen 130, wherein the control unit 110 outputs pixel voltages to the display module to display images, and sends excitation signals to The capacitive sensing electrode array receives a sensing signal from the capacitive sensing electrode array to detect a touch event or a hovering proximity event. In detail, in the present invention, the control unit 110 performs the following steps:

(1) judging whether the handheld device 100 is in a call;

(2) If the handheld device 100 is in a call, plan the resolution distribution of the capacitive sensing electrode array and/or a scanning sequence according to the value of the acceleration signal of the acceleration sensor 120 to provide higher touch sensitivity , so that the touch screen 130 forms a proximity sensing unit when the time rate of change of the acceleration signal exceeds a first threshold (representing that the handheld device 100 is lifted from bottom to top); and

(3) Turning off the touch screen 130 when the sensing value detected by the proximity sensing unit or its time change rate is higher than a second threshold, so as to avoid false touches on the touch screen 130 by the ear.

The principle of the present invention is that when the user is talking with a handheld device or a mobile phone, when the acceleration sensor of the handheld device or mobile phone detects that the handheld device or mobile phone has been accelerated and lifted, the control unit can reasonably judge that the user The call will be made with a hand-held device or a mobile phone close to the face. At this point, the control unit can start a touch incremental scanning program, wherein the touch incremental scanning program may include connecting multiple sensing electrodes of a touch screen or jumping multiple sensing electrodes of the touch screen to Increase the sensitivity of touch detection, so that when the face is still a certain distance away from the screen, the touch sensitivity or the time-varying rate of the touch sensitivity can be increased and the touch screen can be turned off.

Please refer to FIG. 2a and FIG. 2b, wherein, FIG. 2a is a schematic diagram of connecting multiple rows of sensing electrodes 131 at the top of the touch screen 130 to form a proximity sensing unit, wherein the sensing electrodes 131 of the top three rows are all filled. A hatching represents parallel connection; and FIG. 2b is a schematic diagram of jumping multiple rows of sensing electrodes 131 at the top of the touch screen 130 to form a proximity sensing unit, wherein the sensing electrodes 131 of the top 3 rows are filled A shaded electrode represents a parallel connection. Both ways can improve the sensing sensitivity. In addition, when performing touch scanning, the connection sensing channel at the top of the screen can be scanned an additional time. Please refer to FIG. 2c for a schematic diagram of the scanning timing, so as to obtain high-sensitivity data at the top area of the screen.

After starting the touch incremental scanning program, when the control unit 110 scans that the sensing value of the high-sensitivity area exceeds a first preset value, or the change of the sensing value from low to high within a specified time is higher than a first preset value, When the value exceeds the preset value, it is determined that the handheld device or mobile phone is approaching the face, and the control unit 11 performs the screen-off operation.

In addition, when the time rate of change of the acceleration signal of the acceleration sensor 120 is lower than a second threshold (representing that the handheld device 100 moves from top to bottom), and the control unit 110 fails to detect the acceleration in the high-sensitivity area for multiple consecutive frames When the sensing data is valid, the control unit 110 determines that the face is far away from the screen, turns off the proximity sensing and performs the screen brightening operation.

According to the above description, it can be seen that the present invention proposes a touch-sensing-based approach to screen-off method. Please refer to FIG. 3 , which shows a flowchart of an embodiment of a touch-sensing-based proximity-off screen method of the present invention, which is implemented by a control circuit. As shown in FIG. 3 , the method includes: detecting the acceleration of the handheld device by an acceleration sensor of the handheld device in the talking mode of the handheld device (step a); when the time rate of change of the acceleration signal exceeds When a first threshold is set, a touch screen is formed into a proximity sensing unit (step b); and when the proximity sensing unit detects a sensing value or a time change rate of a sensing value is higher than a second threshold, the touch screen, so as to prevent the ear from accidentally touching the touch screen (step c).

In the above steps, the proximity sensing unit can be formed by connecting or jumping multiple rows of sensing electrodes of a touch screen, wherein the multiple rows of sensing electrodes are preferably sensing electrodes located at the top of the screen.

With the design disclosed above, the present invention has the following advantages:

1. The touch-sensing-based approach screen-off method of the present invention can use the acceleration sensor of the mobile phone to detect the acceleration of the mobile phone in the call mode of the mobile phone, so as to increase the acceleration when the user holds the mobile phone to the ear. The sensitivity of the touch screen is used to detect the proximity of the face and turn off the touch screen accordingly, so as to prevent the ear from accidentally touching the touch screen.

2. The hand-held device of the present invention can prevent the ear from accidentally touching the touch screen in the call mode of the mobile phone through the aforementioned touch-sensing-based proximity screen-off method.

3. In the handheld device of the present invention, an infrared sensor can be omitted to reduce the manufacturing cost and the overall power consumption of the mobile phone.

4. The handheld device of the present invention can reduce the range of the screen bangs or realize a borderless full-screen design by using the aforementioned touch-sensing-based approach-off screen method.

What is disclosed in this case is a preferred embodiment. For example, any partial changes or modifications derived from the technical ideas of this case and easily deduced by those who are familiar with the technology are within the scope of the patent right of this case.

To sum up, regardless of the purpose, means and efficacy of this case, it shows that it is very different from the conventional technology, and its first invention is practical, and it does meet the patent requirements of the invention. I implore your review committee to understand it clearly and grant a patent as soon as possible. Society is for the Most Prayer.

100: handheld device 110: Control unit 120: Acceleration sensor 130: touch screen 131: Induction electrode Step a: Detect the acceleration of the handheld device by an acceleration sensor of the handheld device in the talking mode of the handheld device. Step b: Make a touch screen form a proximity sensing unit when the time rate of change of the acceleration signal exceeds a first threshold. Step c: Turning off the touch screen when the proximity sensing unit detects a sensing value or a time rate of change of a sensing value higher than a second threshold, so as to prevent false touches of the touch screen by ears.

FIG. 1 shows a block diagram of an embodiment of the handheld device of the present invention. FIG. 2 a is a schematic diagram of connecting multiple rows of sensing electrodes on the top of the touch screen in parallel to form a proximity sensing unit in the handheld device of FIG. 1 . 2b is a schematic diagram of the handheld device in FIG. 1 jumping multiple rows of sensing electrodes on the top of the touch screen to form a proximity sensing unit. FIG. 2c is a schematic diagram of a touch scanning sequence adopted by the present invention. FIG. 3 shows a flow chart of an embodiment of the touch-sensing-based proximity-off screen method of the present invention.

Step a: Detecting the acceleration of the handheld device by an acceleration sensor of the handheld device in the talking mode of the handheld device

Step b: Make a touch screen form a proximity sensing unit when the time rate of change of the acceleration signal exceeds a first threshold

Step c: Turning off the touch screen when the proximity sensing unit detects a sensing value or a time rate of change of a sensing value higher than a second threshold, so as to prevent the ear from falsely touching the touch screen

Claims (6)

A method for approaching screen-off based on touch sensing, characterized in that: in a call mode of a handheld device, an acceleration sensor of the handheld device detects the acceleration of the handheld device; and when the acceleration exceeds a threshold A touch screen of the handheld device is formed into a proximity sensing unit, and the touch screen is turned off when the proximity sensing unit detects that a sensing value is higher than a sensing threshold, thereby preventing the ear from misleading the touch screen. Touch; Wherein, the proximity sensing unit is formed by connecting multiple sensing electrodes of the touch screen or jumping multiple sensing electrodes of the touch screen. According to the touch-sensing-based approach-off-screen method described in item 1 of the scope of patent application, wherein the handheld device is a smart phone. According to the touch-sensing-based approach-off screen method described in item 1 of the scope of patent application, wherein the touch screen is a capacitive touch screen. A handheld device with a control circuit to perform a method of approaching screen-off based on touch sensing, the method is characterized in that: in a call mode of the handheld device, an acceleration sensor of the handheld device detects the The acceleration of the handheld device; and when the acceleration exceeds a threshold, the touch screen of the handheld device forms a proximity sensing unit, and when the proximity sensing unit detects that a sensing value is higher than a sensing threshold, the touch screen is turned off control screen, so as to prevent ears from falsely touching the touch screen; wherein, the proximity sensing unit is formed by connecting a plurality of sensing electrodes of the touch screen or jumping a plurality of sensing electrodes of the touch screen . As the handheld device described in item 4 of the scope of the patent application, it is a smart phone. The handheld device as described in item 4 of the scope of the patent application, wherein the touch screen is a capacitive touch screen.

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