TWI582646B - Electronic device and the method for preventing noise-interference thereof - Google Patents

Description

Electronic device and method for preventing noise interference applied to electronic device

The present invention relates to an electronic device, and more particularly to an electronic device that utilizes an adjusted operating frequency to avoid noise interference.

Today's users all have portable devices (such as tablets, smart phones, and the like). Users often use a stylus to operate the device, such as using a stylus to draw or open a notepad for recording. However, sometimes when the user uses the active stylus, the active stylus will encounter inaccurate operation problems, such as the font on the device cannot be written, the line segment on the device cannot be drawn, or the device is on the device. The line segment is not as good as the user expected. The above phenomenon is caused by noise interference in the external environment.

The purpose of the present invention is to solve the touch problem caused by noise interference by changing the frequency between the stylus and the electronic device.

The present invention provides an electronic device, wherein the electronic device includes a first wireless module for receiving a trigger signal from a stylus; and a processor for determining the electronic device when receiving the trigger signal Whether the touch operation performed by the device and the stylus at a first operating frequency is affected Interference of a first noise frequency, and when it is determined that the electronic device is interfered by the first noise frequency, transmitting a first synchronization information to the stylus, causing the stylus to operate at a second operating frequency Performing a touch operation with the electronic device, wherein the first operating frequency is different from the second operating frequency.

The present invention also provides a method for preventing noise interference, which is applicable to an electronic device, the method comprising: receiving a trigger signal from a stylus; and when receiving the trigger signal, determining that the electronic device and the stylus are Whether the touch operation performed by the first operating frequency is interfered by a first noise frequency; and when it is determined that the electronic device is interfered by the first noise frequency, transmitting a first synchronization information to the touch The pen causes the stylus to perform a touch operation with the electronic device at a second operating frequency, wherein the first operating frequency is different from the second operating frequency.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

100‧‧‧Electronic devices

102‧‧‧Touch panel

104‧‧‧Sensor array

106‧‧‧Microcontroller

108‧‧‧Display device

110‧‧‧ processor

112, 214‧‧‧ wireless module

200‧‧‧ stylus

202‧‧‧Detection device

204‧‧‧grip sensing device

206‧‧‧ Pressure sensing device

208‧‧‧Magnetic sensing device

210‧‧‧transmitter

212‧‧‧ Controller

S1‧‧‧ electromagnetic signal

Tr‧‧‧ trigger signal

Sync‧‧‧First sync information

S10, S20, S30, S40, S50, S60‧‧ steps

1 is a schematic diagram of an electronic device and a stylus provided by the present invention; FIG. 2 is a block diagram of an electronic device and a stylus provided by the present invention; and FIG. 3 is an electronic device and a touch provided by the present invention. A flow chart of the control pen interaction.

The methods of making and using various embodiments of the present invention are discussed in detail below. However, it is worth noting that many of the possible inventions provided by the present invention are The concept can be implemented in a variety of specific ranges. These specific examples are merely illustrative of the methods of making and using the invention, but are not intended to limit the scope of the invention.

FIG. 1 is a schematic diagram of an electronic device 100 and a stylus 200 provided by the present invention. The electronic device 100 can be implemented in a variety of computer system configurations, such as smart phones, tablets, personal digital assistants, and the like. The stylus 200 is an active stylus. In some embodiments, the active stylus is an electromagnetic stylus. The electronic device 100 is configured to receive a trigger signal Tr from one of the stylus pens 200. After receiving the trigger signal Tr, if the touch operation performed by the electronic device 100 and the stylus 200 at the first operating frequency fw1 is interfered by the first noise frequency fn1, the electronic device 100 transmits a first synchronization information. The sync to the stylus 200 causes the stylus 200 to perform a touch operation with the electronic device 100 at a second operating frequency different from the first operating frequency to solve the touch problem caused by the noise interference. In the embodiment of the present invention, the touch operation is performed by the stylus 200 transmitting an electromagnetic signal S1 to the electronic device 100, so that the electronic device 100 determines whether a corresponding correspondence occurs according to the position change information of the electromagnetic signal S1 on the electronic device 200. Touch behavior. The operating frequency of the electromagnetic signal S1 is the first operating frequency fw1, the second operating frequency fw2 or in other configurable frequency ranges. The detailed interaction between the electronic device 100 and the stylus pen 200 will be described later.

FIG. 2 is a block diagram of the electronic device 100 and the stylus pen 200 provided by the present invention. The electronic device 100 includes a touch panel 102 , a processor 110 , and a wireless module 112 . The touch panel 102 includes a sensing array 104, a microcontroller 106, and a display device 108. The sensing array 104 is an X/Y axis antenna array. In an embodiment of the invention, the sensing array 104 receives from The electromagnetic signal S1 emitted by the stylus 200 generates a corresponding signal, and the microcontroller 106 knows the position change information of the electromagnetic signal S1 on the sensing array 104 according to the corresponding signal generated by the sensing array 104. In another embodiment of the present invention, the sensing array 104 receives the electromagnetic signal S1 emitted from the stylus pen 200 and generates a corresponding signal, and provides a corresponding signal to the processor 110, so that the processor 110 knows the electromagnetic Signal S1 is used to sense position change information on array 104. In an embodiment of the invention, the microcontroller 106 can also relay the position change information of the electromagnetic signal S1 on the sensing array 104 to the processor 110. The display device 108 can be a Light-emitting Diode (LED), a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED) or the like. The display 108 is used to display a screen generated according to the corresponding touch operation, and the detailed operation will be described later. The processor 110 can include a single central processing unit (CPU) or a plurality of parallel processing units associated with a parallel processing environment. The processor 110 is further connected to a memory (not shown), and the memory (not shown) includes a read only memory (ROM), a flash ROM, and/or a dynamic access. A random access memory (RAM) for storing a program module executable by the processor 110. Generally, a program module includes a routine, a program, an object, a component, etc., for performing dynamic information transmission or reception. For example, the frequency range over which the sensing array 104 can operate can be stored in memory.

The processor 110 is configured to determine, according to the position change information of the electromagnetic signal S1 on the sensing array 104, whether a corresponding touch behavior occurs and make the display The display device 108 displays a screen corresponding to the touch behavior. For example, the corresponding touch behavior may be a single click behavior, a drag behavior, a release behavior (the behavior of the stylus 200 from contacting the electronic device 100 to the electronic device 100 not touching the instant), and the like, but the present invention does not This is limited to this. In some embodiments of the invention, the functionality of microcontroller 106 may be integrated into processor 110. The wireless module 112 can be a Bluetooth module or a wifi module. The wireless module 112 is configured to receive the trigger signal Tr from the stylus pen 200 and transmit a synchronization information to the stylus pen 200. The processor 110 is configured to determine, when the processor 110 receives the trigger signal Tr from the wireless module 112, whether the touch operation performed by the electronic device 100 and the stylus 200 at the first operating frequency is the first in the external environment. Interference with noise frequency. When the processor 108 determines that the electronic device 100 is interfered by the first noise frequency, the first operating frequency is changed to the second working frequency, and the first synchronization information sync is transmitted to the stylus pen 200, so that the stylus pen 200 is The first synchronization information sync is changed to the second operating frequency to perform a touch operation with the electronic device 100. For example, the touch operation is to transmit the electromagnetic signal to the sensing array 104 by the transmitter 210, so that the electronic device 100 determines whether the corresponding touch behavior occurs according to the position change information of the electromagnetic signal S1 on the sensing array 104. In an embodiment of the invention, the interference of the first noise frequency of the external environment is that the first noise frequency of the external environment is equal to or approximately equal to the first operating frequency.

As shown in FIG. 2, the stylus 200 includes a detecting device 202, a transmitter 210, a controller 212, and a wireless module 214. The detecting device 202 includes a grip sensing element 204, a pressure sensing element 206, and/or a magnetic sensing element 208. The grip sensing element 204 and the pressure sensing element 206 can be buttons, and the magnetic sensing element 208 can be a Hall element.

In an embodiment of the invention, the detecting device 202 transmits a trigger signal Tr to the controller 212 when detecting a trigger event. In an embodiment of the present invention, the triggering event may be such that the user presses the button to cause the grip force sensing value of the grip force sensing device 204 to be greater than a first threshold. In another embodiment of the invention, the triggering event may cause the user to touch a button such that the pressure sensing value of the pressure sensing element 206 is greater than a second threshold. In another embodiment of the present invention, the triggering event may cause the user to touch the Hall element such that the magnetic sensing value of the magnetic sensing element 108 is greater than a third threshold. In another embodiment of the invention, the triggering event can be at least two of the three described above. The transmitter 210 is configured to transmit the electromagnetic signal S1 to the sensing array 104. The controller 212 is configured to transmit the trigger signal Tr from the detecting device 202 to the wireless module 214 when the detecting device 200 receives the triggering event, and control the transmitter 210 to transmit the electromagnetic signal S1 to the sensing array 106. In an embodiment of the invention, the frequency of the electromagnetic signals emitted by the transmitter 210 ranges from 20k-40k Hz, and the frequency range of the electromagnetic signals received by the sensing array 104 is also 20k-40k Hz. The wireless module 214 is configured to receive the trigger signal Tr from the controller 212 and transmit the trigger signal Tr to the wireless module 112 through a preset channel. For example, the preset channel may be a wireless network channel with IEEE 802.11 as a standard, but the invention is not limited thereto.

FIG. 3 is a flow chart of interaction between the electronic device 100 and the stylus pen 200 provided by the present invention. First, in step S10, the detecting device 202 determines whether the stylus pen 200 is in use (ie, whether a trigger event occurs). If the stylus pen 200 is not in use, it returns to step S10. If the stylus pen 200 is in use, it proceeds to step S20. In step S20, the controller 212 transmits the trigger signal Tr to the processor 110 through the wireless modules 214, 112. Then proceed to step S30, in step In S30, the processor 110 determines whether the touch operation performed by the electronic device 100 and the stylus 200 at a current frequency (for example, the first operating frequency) is interfered by a noise frequency (eg, a first noise frequency). . If the touch operation performed by the electronic device 100 and the stylus 200 at the current frequency is not disturbed by the noise frequency, the process proceeds to step S40. In step S40, the stylus 200 and the electronic device 100 perform a touch operation at the current frequency. In this embodiment, after a period of time after performing step S40, the method returns to step S30. If the touch operation performed by the electronic device 100 and the stylus 200 at the current frequency is disturbed by the noise frequency, the process proceeds to step S50. In step S50, the processor 110 transmits a synchronization information (for example, the first synchronization information sync) to the controller 212 of the stylus pen 200 and changes the operating frequency of the sensing array 104 to another operating frequency according to the synchronization information. For example: second working frequency). Then, the process proceeds to step S60. In step S60, the controller 212 controls the electromagnetic signal S1 of the transmitter 210 to perform a touch operation with the sensing array 104 of the electronic device 100 at the other operating frequency according to the first synchronization information sync. In this embodiment, after a period of time after performing step S60, the method returns to step S30. In other words, the processor 110 can continue to determine whether the operating frequency between the electronic device 100 and the stylus pen 200 is interfered by the noise frequency. For example, after a period of time, the processor 110 determines that the touch operation performed by the electronic device 100 and the stylus 200 at a current frequency (eg, the second operating frequency) is subjected to a noise frequency (eg, second miscellaneous The interference of the signal frequency transmits a synchronization information to the controller 212 of the stylus pen 200 and changes the operating frequency of the sensing array 104 to another operating frequency (eg, the third operating frequency) according to the second synchronization information. Then, the controller 212 controls the electromagnetic signal S1 of the transmitter 210 to perform a touch operation with the sensing array 104 of the electronic device 100 at the third operating frequency according to the second synchronization information, and so on, but The invention is not limited thereto. In an embodiment of the invention, the first operating frequency, the second operating frequency, and the third operating frequency are different frequencies.

The method of the invention, or a particular type or portion thereof, may exist in the form of a code. The code can be stored in a physical medium such as a floppy disk, a CD, a hard disk, or any other machine readable (such as computer readable) storage medium, or is not limited to an external form of computer program product, wherein When the code is loaded and executed by a machine, such as a computer, the machine becomes a device for participating in the present invention. The code can also be transmitted via some transmission medium, such as a wire or cable, fiber optics, or any transmission type, where the machine becomes part of the program when it is received, loaded, and executed by a machine, such as a computer. Invented device. When implemented in a general purpose processing unit, the code combination processing unit provides a unique means of operation similar to application specific logic.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.

100‧‧‧Electronic devices

102‧‧‧Touch panel

104‧‧‧Sensor array

106‧‧‧Microcontroller

108‧‧‧Display device

110‧‧‧ processor

112, 214‧‧‧ wireless module

200‧‧‧ stylus

202‧‧‧Detection device

204‧‧‧grip sensing device

206‧‧‧ Pressure sensing device

208‧‧‧Magnetic sensing device

210‧‧‧transmitter

212‧‧‧ Controller

S1‧‧‧ electromagnetic signal

Tr‧‧‧ trigger signal

Sync‧‧‧First sync information

Claims (10)

An electronic device includes: a first wireless module for receiving a trigger signal from a stylus; and a processor for determining the electronic device and the stylus when receiving the trigger signal Whether the touch operation performed at a first operating frequency is interfered by a first noise frequency, and when it is determined that the electronic device is interfered by the first noise frequency, transmitting a first synchronization information to the touch The stylus causes the stylus to perform a touch operation with the electronic device at a second operating frequency, wherein the first operating frequency is different from the second operating frequency. The electronic device of claim 1, wherein the stylus includes a detecting device, a controller, and a second wireless module. When the detecting device receives a trigger event, the controller Transmitting the trigger signal to the first wireless module through the second wireless module. The electronic device of claim 2, further comprising a sensing array for receiving an electromagnetic signal from the stylus so that the stylus and the electronic device perform a touch operation, the electromagnetic The signal has the first operating frequency or the second operating frequency described above. The electronic device of claim 2, wherein the stylus further comprises a transmitter for selectively transmitting an electromagnetic signal having the first operating frequency or the second operating frequency for the touch The control pen performs a touch operation with the above electronic device. The electronic device of claim 2, wherein the second wireless module is a wifi module or a Bluetooth module for transmitting the trigger signal To the first wireless module described above. The electronic device of claim 2, wherein the detecting device comprises a grip sensing element, a pressure sensing element and/or a magnetic sensing element. The electronic device of claim 6, wherein the triggering event is that the grip force sensing value of the grip force sensing component is greater than a first threshold, and the pressure sensing value of the pressure sensing component is greater than a second The threshold value and/or the magnetic sensed value sensed by the magnetic sensing element is greater than a third threshold. The electronic device of claim 1, wherein the processor determines whether the touch operation performed by the electronic device and the stylus at the second operating frequency is interfered by a second noise frequency, and When it is determined that the electronic device is interfered by the second noise frequency, transmitting a second synchronization information to the stylus, causing the stylus to perform a touch operation with the electronic device at a third operating frequency, wherein The third operating frequency is different from the first operating frequency, and the third operating frequency is different from the second operating frequency. A method for preventing noise interference is applicable to an electronic device, the method comprising: receiving a trigger signal from a stylus; and when receiving the trigger signal, determining that the electronic device and the stylus are in a first work Whether the touch operation performed by the frequency is interfered by a first noise frequency; and when it is determined that the electronic device is interfered by the first noise frequency, transmitting a first synchronization information to the stylus, thereby causing the above The stylus performs a touch operation with the electronic device at a second operating frequency, wherein the first work The frequency is different from the second operating frequency described above. The method for preventing noise interference according to claim 9 further includes: determining whether the touch operation performed by the electronic device and the stylus at the second operating frequency is interfered by a second noise frequency When it is determined that the electronic device is interfered by the second noise frequency, transmitting a second synchronization information to the stylus, causing the stylus to perform a touch operation with the electronic device at a third operating frequency. The third operating frequency is different from the first operating frequency, and the third operating frequency is different from the second operating frequency.