TW201523356A - Method for changing scanning frequency and electronic system - Google Patents

Abstract

A method for changing a scanning frequency and an electronic system thereof are provided. The method is suitable for an electronic device, and the method includes: detecting a plurality of touch position signals; determining whether the plurality of touch position signals are conformed to a fiddling points rule; if the plurality of touch position signals are conformed to the fiddling points rule, changing the scanning frequency of the electronic device, which is configured to scan an active carrier wave transmitted by an input device.

Description

Scan frequency switching method and electronic system

The present invention relates to an operation method of an electronic device, and more particularly to a scanning frequency switching method and an electronic system.

The stylus with touch pad or touch screen has always been a favorite electronic product combination. The user can use the stylus to perform painting and/or memo operations on the touchpad or touch screen. The traditional stylus is like a human finger. The user must use the stylus to touch the touchpad or touch screen to change the capacitance or pressure of the touchpad or touchscreen at the location where the touch occurs. Values, etc., to operate electronic devices such as smart phones or tablets. In recent years, styluses capable of transmitting active carriers have also become popular. Through the active carrier transmitted by the stylus, the electronic device can more accurately perform the touch position of the stylus corresponding to the touch panel or the touch screen. Positioning. In addition, the active carrier can also carry some of the messages from the stylus.

However, it is full of rings of wireless communication products and the radios they emit. In the environment, the active carrier transmitted by the stylus is easily interfered by noise in the environment, thereby affecting the correctness of the signal received by the electronic device.

The invention provides a scanning frequency switching method and an electronic system, which can reduce interference caused by environmental noise to an active carrier transmitted by an input device.

The present invention provides a scanning frequency switching method, which is applicable to an electronic device. The method includes: detecting a plurality of touch position signals; determining whether the touch position signal conforms to a random report point rule; and if the touch position signal is In accordance with the rules of random reporting, the scanning frequency of the electronic device is switched, wherein the scanning frequency is used to scan the active carrier transmitted by the input device.

The invention further provides an electronic system comprising an input device and an electronic device. The input device includes an active carrier transmitter for transmitting an active carrier. The electronic device includes a processor and an active carrier receiver, and the processor is coupled to the active carrier receiver. The processor is configured to detect a plurality of touch position signals, and determine whether the touch position signal conforms to a random report point rule. If the touch position signal conforms to the random reporting point rule, the processor switches the scanning frequency of the active carrier receiver, wherein the scanning frequency is used to scan the active carrier transmitted by the active carrier transmitter.

Based on the above, the scanning frequency switching method and the electronic system proposed by the present invention can reduce the interference of the environmental noise on the active carrier transmitted by the input device by switching the scanning frequency of the electronic device.

In order to make the above features and advantages of the present invention more apparent, the following is a special The embodiments are described in detail below in conjunction with the drawings.

10‧‧‧Electronic system

11‧‧‧ Input device

112‧‧‧Active Carrier Transmitter

114‧‧‧Wireless Transmission Module

116‧‧‧Position detection unit

12‧‧‧Electronic devices

122‧‧‧ touch screen

124‧‧‧Active Carrier Receiver

126‧‧‧ processor

128‧‧‧Wireless Transmission Module

21‧‧‧Active carrier

22‧‧‧Wireless Transmission Agreement

S302, S304, S306‧‧‧ steps of scanning frequency switching method according to an embodiment of the present invention

1 and 2 are schematic diagrams of an electronic system according to an embodiment of the invention.

FIG. 3 is a schematic diagram of a scanning frequency switching method according to an embodiment of the invention.

1 and 2 are schematic diagrams of an electronic system according to an embodiment of the invention. Referring to FIG. 1 , the electronic system 10 includes an input device 11 and an electronic device 12 . The input device 11 is, for example, a stylus or a remote controller.

In the embodiment, the electronic device 12 includes a touch screen 122. The touch screen 122 can be a resistive touch panel, a capacitive touch panel, an optical touch panel, an acoustic wave touch panel or an electromagnetic touch. Panels, etc., with touch and display capabilities. For example, the electronic device 12 may be an electronic device with a touch screen such as a smart phone, a tablet computer, a notebook computer, a television, or a desktop computer.

Alternatively, in an embodiment, the touch screen 122 may be replaced by a touch pad having no display function, and the electronic device 12 may be a trackpad device or a notebook computer or the like having a touch panel. Electronic device.

In this embodiment, the user can perform operations such as touch and drag on the touch screen 122 through the input device 11 to input an operation command to the electronic device 12, and the electronic device 12 can input according to the user. The operation instruction performs a corresponding operation, for example, controlling the touch screen 122 to display a specific picture or the like.

In particular, in the present embodiment, the input device 11 can transmit an active carrier to the electronic device 12. For example, the active carrier can be used to position the input device 11 corresponding to a particular location on the touch screen 122. For example, when the input device 11 approaches or touches a particular location on the touch screen 122, this particular location may, for example, result in a change in the voltage waveform due to receipt of the active carrier from the input device 11. The electronic device 12 can individually position this particular location based on changes in this voltage waveform. Alternatively, the electronic device 12 can also use the change of the voltage waveform to match the positioning mechanism of the touch screen 122 itself to assist the touch screen 122 to locate the specific position.

Moreover, in an embodiment, the active carrier transmitted by the input device 11 will also carry specific information. For example, with various senses such as a proximity sensor, an acceleration sensor, an electronic compass, a gyro, and/or a vibration sensing element disposed in the input device 11. Posture information generated by the detector. The electronic device 12 can receive and analyze the active carrier to obtain the posture information.

In addition, the electronic device 12 receives the active carrier from the input device 11 through a specific scanning frequency. When the specific scanning frequency is consistent with the frequency of the active carrier (or referred to as carrier frequency, transmission frequency), the electronic device 12 can receive the active load. wave.

Referring to FIG. 2, the input device 11 includes an active carrier transmitter 112. The active carrier transmitter 112 is configured to transmit the active carrier 21. The electronic device 12 includes a touch screen 122, an active carrier receiver 124, and a processor 126. The active carrier receiver 124 and the touch screen 122 are coupled to the processor 126, respectively.

The active carrier receiver 124 is configured to scan or receive the active carrier 21 transmitted by the active carrier transmitter 112 through a scanning frequency. In this embodiment, the active carrier receiver 124 can receive the active carrier 21 separately. Alternatively, in an embodiment, the active carrier receiver 124 can also be combined with the touch screen 122 to receive the active carrier 21 through a receiving line disposed on the touch screen 122.

The processor 126 may be a central processing unit (CPU), a micro-processor, or an embedded controller, which is not limited by the present invention. The processor 126 detects a plurality of touch position signals. The touch position signals are, for example, output by the active carrier receiver 124 based on the received plurality of active carriers 21. Among them, each touch position signal will correspond to one touch position. In addition, in an environment where there are many surrounding wireless communication devices and/or strong surrounding radio intensity, at least part of the touch position signals may also be the active carrier receiver 124 according to environmental noise (for example, by the rest). The wireless communication device emits electromagnetic waves of similar frequency. Therefore, in order to identify whether the touch location signals are generated based on environmental noise, the processor 126 determines whether the touch location signals conform to a random loop rule.

For example, because environmental noise is an irregular noise signal, The touch position signal generated according to the environmental noise corresponding to the touch position on the touch screen 122 is also inconsistent. Therefore, the processor 126 can obtain the plurality of touch positions corresponding to the touch position signals on the touch screen 122, and determine whether the distribution of the touch positions conforms to the random report point distribution rule. For example, the processor 126 can calculate a discrete degree value that can be used to indicate the degree of dispersion of the touch locations based on the coordinates of the touch locations. This degree of dispersion is proportional to or positively correlated with the degree of dispersion of such touch locations. If the value of the dispersion is larger, it indicates that the touch positions are more dispersed. Conversely, if the value of the dispersion is smaller, it means that the touch positions are more concentrated.

That is, after detecting a preset number of touch position signals, or for a plurality of touch position signals detected within a preset time range, if the touch position signals correspond to the touch signals When the distribution state of the touch position on the screen 122 is different from the normal operation behavior of the general user, it means that the touch position signals are most likely to be false alarm points generated by environmental noise interference, instead of being based on the active carrier. 21 produced. Therefore, the processor 126 can set a preset discreteness value, and when the calculated discreteness value is greater than the preset discreteness value, determine that the distribution of the touched positions conforms to the randomized point distribution rule. When the processor 126 determines that the distribution of the touch positions conforms to the random report point distribution rule, it indicates that the touch position signals conform to the random report point rule.

In addition, in an embodiment, the processor 126 determines whether the number of occurrences of the touch position signals is greater than the threshold value within a predetermined time range. The number of occurrences of the touch position signals is, for example, that the processor 126 detects the touch. The number of position signals. If the number of occurrences of the touch position signals is greater than the critical value of the number of times within the preset time range, the processor 126 determines that the touch position signals conform to the random report point rule. For example, if the processor 126 detects 10 consecutive touch positions corresponding to the same or different positions on the touch screen 122 and is not continuous within 1 second, the user may not be within 1 second under normal circumstances. The touch screen 122 is continuously clicked 10 times or more, so it can be reasonably inferred that a large part of the touch position signals are caused by environmental noise, and the processor 126 determines the touches. The location signal complies with the rules of random reporting.

If the processor 126 determines that the touch location signals conform to the random reporting point rule, the processor 126 switches the scanning frequency of the active carrier receiver 124 to scan or receive the active transmission by the input device 12 through the switched scanning frequency. Carrier 12.

In particular, since the electronic device 12 can receive the active carrier 12 only when the scanning frequency of the active carrier receiver 124 coincides with the frequency of the active carrier 12, in one embodiment, when the scanning frequency of the active carrier receiver 124 is When switching, the processor 126 controls the touch screen 122 to display a prompt message or sends a prompt voice through a speaker (not shown) of the electronic device 12 to notify the user that the scan frequency of the active carrier receiver 124 has been switched, and informs the use. The scanning frequency after switching. Then, the user can adjust the frequency of the active carrier 21 transmitted by the active carrier transmitter 112 according to the scan frequency after the active carrier receiver 124 switches.

In addition, in an embodiment, the input device 11 further includes a wireless transmission module 114. The wireless transmission module 114 is coupled to the active carrier transmitter 112. The electronic device 12 further includes a wireless transmission module 128, and the wireless transmission module. Group 128 is coupled everywhere Processor 126.

After the scanning frequency of the active carrier receiver 124 is switched, the wireless transmission module 128 informs the input device 11 through the specific wireless transmission protocol 22 to synchronously switch the frequency of the active carrier 21 to the scanning frequency after switching with the active carrier receiver 124. Consistent. This particular wireless transmission protocol 22 may be Bluetooth (BT), WiFi, or Near Field Communication (NFC) protocol, etc., and the invention is not limited thereto. Therefore, the user does not need manual adjustment, and the active carrier transmitter 112 can automatically switch the frequency of the active carrier 21 to be consistent with the scanning frequency after the active carrier receiver 124 is switched according to the message received by the wireless transmission module 114. Improve the convenience of use.

In addition, in an embodiment, the processor 126 also performs a preset operation according to whether the frequency of the active carrier 21 or the frequency of the active carrier 21 is switched from a first frequency to a second frequency. For example, assume that the original active carrier receiver 124 receives the active carrier 21 at 200 Hz, and after a certain time point or within a certain time range after the specific time point (for example, 1 to 3 seconds), The active carrier receiver 124 does not receive the active carrier 21 at 200 Hz. At this point, processor 126 controls active carrier receiver 124 to attempt to receive active carrier 21 at 500 Hz. If the active carrier receiver 124 can successfully receive the active carrier 21 at 500 Hz, indicating that the frequency of the active carrier 21 has been switched from 200 Hz to 500 Hz, the processor 126 controls the active carrier receiver 124 to synchronously switch its scanning frequency. Up to 500Hz. On the other hand, if the active carrier receiver 124 still fails to receive the active carrier 21 at 500 Hz, the processor 126 can control the active carrier receiver 124 to try to The scanning frequency is to receive the active carrier 21 until it can successfully receive the active carrier 21. In addition, when all the switchable scanning frequencies are tried but the active carrier 21 is still not received, it indicates that the environmental noise may be too strong or the input device 11 is too far away from the electronic device 12, so the processor 126 may The touch screen 122 is displayed to display a prompt message to inform the user to manually set a new scan frequency or to prompt the user to move the input device 11 closer to the electronic device 12 or the like, or the processor 126 may also automatically turn off the active carrier receiver 124, for example. Scanning features to save unnecessary power consumption and more.

Additionally, the processor 126 can run an operating system (OS) and run the application through the operating system. In an embodiment, the processor 126 also switches the function corresponding to the application currently running by the processor 126 according to whether the frequency of the active carrier 21 or the frequency of the active carrier 21 is switched from a first frequency to a second frequency. . For example, assume that the processor 126 is executing a drawing function of the drawing application through the operating system, and at this time, the writing stroke of the pen is a thinner handwriting. When the processor 126 finds that the frequency of the active carrier 21 is switched from 200 Hz to 500 Hz, the processor 126 can switch the handwriting of the stylus to a thicker handwriting or start a storage function of the drawing application to store the drawn picture. . That is, according to the frequency of the active carrier 21, the processor 126 can switch from executing the first preset function of the currently running application to executing the second preset function of the currently running application, and the first preset function is The second preset function can be set by the user according to different applications. In addition, the currently running application is, for example, the application that is displayed in the foreground.

In addition, in an embodiment, the processor 126 may also pre-define a switching rule of a preset function. For example, the processor 126 may define a switching rule of the preset function as to switch the preset function of the application as long as the frequency of the active carrier 21 is switched. For example, following the above example, when the processor 126 finds that the frequency of the active carrier 21 is switched from 500 Hz back to the original 200 Hz, the processor 126 can switch the handwriting of the stylus to a thicker handwriting, or reopen a new blank picture, etc. Etc., depending on the needs of the practice.

Alternatively, in an embodiment, the processor 126 may also respectively associate each frequency that the active carrier 21 can switch with each preset function of an application. For example, when the processor 126 finds that the frequency of the active carrier 21 is switched from 200 Hz to 500 Hz, the processor 126 can enable the Bluetooth function of the wireless transmission module 128 through a setting program. When the processor 126 finds that the frequency of the active carrier 21 is switched from 500 Hz to 200 Hz, the processor 126 can disable the Bluetooth function of the wireless transmission module 128 and enable its WiFi function and the like through the setting program, and the active carrier 21 can be switched. The number of frequencies and their corresponding functions can be adjusted according to the actual needs. For example, in an embodiment, when the processor 126 finds that the frequency of the active carrier 21 is switched from 500 Hz to 700 Hz, the processor 126 can disable the WiFi function of the wireless transmission module 128 and turn on its flight mode through the setting program.

For another example, when processor 126 finds that the frequency of active carrier 21 is switched from 200 Hz to 500 Hz, processor 126 can switch the scanning frequency of active carrier receiver 124 from 200 Hz to 500 Hz. When the processor 126 finds that the frequency of the active carrier 21 is switched from 500 Hz to 200 Hz, the processor 126 may place the active carrier receiver 124 The scanning frequency is switched from 500 Hz to 200 Hz.

Moreover, in an embodiment, the input device 11 further includes a gesture detecting unit 116. The number of gesture detection units 116 may be one or more. The posture detecting unit 116 is coupled to the active carrier transmitter 112 and configured to detect the posture of the input device 11 and generate posture information according to the posture. For example, the posture detecting unit 116 may include at least one of a proximity sensor, an acceleration sensor, an electronic compass, a gyroscope, and a vibration sensing element, or a combination thereof, to detect the posture of the input device 11 and generate posture information. The active carrier transmitter 112 then switches the frequency of the active carrier 21 based on this posture information.

Thereby, the user can change the center of gravity of the input device 11 by holding or pressing the specific position of the input device 11, rotating the input device 11, shaking the input device 11 beyond a predetermined swing amplitude, and the vibration input device 11 exceeds a predetermined vibration. Frequency, etc., to switch the frequency of the active carrier 21.

In addition, in an embodiment, a physical button (not shown) is disposed on the input device 11. When the physical button is pressed, it sends a pressing signal, and the active carrier transmitter 112 switches the frequency of the active carrier 21 according to the pressing signal.

That is, the user can switch the frequency of the active carrier 21 according to whether the current environmental noise affects the reception of the electronic device 12 for the active carrier 21 and/or whether the electronic device 12 is required to perform a preset function, and The electronic device 12 performs the above-described preset operation according to the switching of the frequency of the active carrier 21 or its frequency.

It is worth mentioning that, in an embodiment, the processor 126 can be based on the frequency of the active carrier 21 or the frequency of the active carrier 21 at any point in time. A frequency is switched to the second frequency to perform a preset operation. Alternatively, in an embodiment, the processor 126 may switch from the first frequency to the frequency of the active carrier 21 or the frequency of the active carrier 21 according to whether the touch position signal does not meet the random reporting point rule. The second frequency corresponds to the execution of the preset operation, so that the segment input device 11 is a case where the frequency of the active carrier 21 is synchronously switched due to the electronic device 12 actively switching its scanning frequency and the case where the input device 11 actively switches the frequency of the active carrier 21.

FIG. 3 is a schematic diagram of a scanning frequency switching method according to an embodiment of the invention.

Referring to FIG. 2 and FIG. 3 simultaneously, in step S302, the processor 126 detects a plurality of touch position signals. Next, in step S304, the processor 126 determines whether the touch position signal conforms to the random report point rule. If the touch position signal conforms to the random report point rule, in step S304, the scan frequency of the active carrier receiver 124 is switched by the processor 126, wherein the scan frequency is used to scan the active carrier 21 transmitted by the input device 11. In addition, in step S304, if the touch position signal does not comply with the random report point rule, step S302 is repeatedly executed, for example.

In summary, the scanning frequency switching method and the electronic system proposed by the present invention can reduce the interference of environmental noise by synchronously switching the scanning frequency of the electronic device and the frequency of the active carrier from the input device, and can also be based on the input device. The frequency switching of the active carrier performs a preset operation, which greatly improves the convenience when the electronic device is operated by the input device.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art without departing from the invention. In the spirit and scope, the scope of protection of the present invention is subject to the definition of the appended patent application.

S302, S304, S306‧‧‧ scan frequency switching method steps

Claims (10)

A scanning frequency switching method is applicable to an electronic device, the method comprising: detecting a plurality of touch position signals; determining whether the touch position signals meet a random report rule; and if the touch position signals meet the The random reporting rule switches a scanning frequency of the electronic device, wherein the scanning frequency is used to scan an active carrier transmitted by an input device. The scanning frequency switching method of claim 1, wherein the step of determining whether the touch position signals meet the random reporting point rule comprises: obtaining the touch position signals corresponding to the touch screen a touch position; determining whether a distribution of the touch positions conforms to a random report distribution rule; and if the distribution of the touch positions conforms to the random report point distribution rule, determining that the touch position signals comply with the Indiscriminate reporting rules. The scanning frequency switching method of claim 1, wherein the step of determining whether the touch position signals meet the random reporting point rule comprises: determining one of the touch position signals within a preset time range Whether the number of occurrences is greater than a threshold number of times; and if the number of occurrences of the touch position signals is greater than the critical value of the number of times within the preset time range, determining that the touch position signals comply with the irregularity rule. The scanning frequency switching method as described in claim 1 of the patent application, wherein After switching the scanning frequency of the electronic device, the method further comprises: informing the input device to switch a frequency of the active carrier to be consistent with the scanning frequency after the switching by using a wireless transmission protocol. The scanning frequency switching method of claim 1, further comprising: if the touch position signals do not meet the random reporting point rule, determining whether a frequency of the active carrier is switched from a first frequency to a a second frequency; and if the frequency of the active carrier is switched from the first frequency to the second frequency, performing a predetermined operation. An electronic system comprising: an input device comprising an active carrier transmitter for transmitting an active carrier; and an electronic device comprising a processor and an active carrier receiver coupled to the active carrier receiver The processor is configured to detect a plurality of touch position signals, and determine whether the touch position signals meet a random report rule, and if the touch position signals meet the random report rule, the processor switches the A scanning frequency of the active carrier receiver, wherein the scanning frequency is used to scan the active carrier transmitted by the active carrier transmitter. The electronic system of claim 6, wherein the electronic device further comprises a wireless transmission module coupled to the processor, wherein the wireless transmission module informs the input through a wireless transmission protocol The device switches a frequency of the active carrier of the active carrier transmitter to be connected to the active carrier The scanning frequency after the switch is switched is the same. The electronic system of claim 6, wherein the input device comprises at least one gesture detecting unit, wherein the at least one gesture detecting unit is coupled to the active carrier transmitter, wherein the at least one gesture detecting unit is configured to: Detecting a posture of the input device, and generating a posture information according to the posture, wherein the active carrier transmitter is further configured to switch a frequency of the active carrier from a first frequency to a second frequency according to the posture information. The electronic system of claim 6, wherein if the touch position signals do not comply with the random reporting point rule, the processor further determines, by the active carrier receiver, whether a frequency of the active carrier is from A first frequency is switched to a second frequency, and if the frequency of the active carrier is switched from the first frequency to the second frequency, the processor performs a predetermined operation. The electronic system of claim 9, wherein the processor is further configured to run an operating system and run an application through the operating system, wherein the processor executes a first preset of the application The function switches to execute a second preset function of the application.