WO2024061023A1 - 一种信号传输方法及相关设备 - Google Patents

一种信号传输方法及相关设备 Download PDF

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Publication number
WO2024061023A1
WO2024061023A1 PCT/CN2023/117670 CN2023117670W WO2024061023A1 WO 2024061023 A1 WO2024061023 A1 WO 2024061023A1 CN 2023117670 W CN2023117670 W CN 2023117670W WO 2024061023 A1 WO2024061023 A1 WO 2024061023A1
Authority
WO
WIPO (PCT)
Prior art keywords
pass filter
contact point
keyboard
electronic device
low
Prior art date
Application number
PCT/CN2023/117670
Other languages
English (en)
French (fr)
Inventor
马雷
马波
马骋宇
付颖科
王朝
Original Assignee
荣耀终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Priority to EP23855776.3A priority Critical patent/EP4379765A1/en
Publication of WO2024061023A1 publication Critical patent/WO2024061023A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/81—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by electrical connections to external devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes

Definitions

  • the present application relates to the field of signal transmission, and in particular, to a signal transmission method and related equipment.
  • terminal devices such as mobile phones and tablet computers are developing more and more rapidly.
  • user needs are also changing, gradually developing from the final basic communication needs to multi-dimensional communication and entertainment needs such as vision, hearing and touch.
  • an externally connected keyboard i.e., an external keyboard
  • signal transmission is required between the terminal device and the external keyboard.
  • Signal transmission can generally include two transmission methods: wireless transmission and wired transmission.
  • the implementation of wireless transmission generally requires the built-in wireless communication chip in the terminal device and the keyboard, which is costly and power-hungry, and may also cause unstable connection.
  • the implementation of wired transmission generally requires consideration of the contact point layout design of the terminal device and the keyboard.
  • This application provides a signal transmission method and related equipment.
  • this signal transmission method when two contact points on the electronic device are in contact with two contact points on the keyboard respectively, the electronic device can transmit the power signal and the GND signal to the keyboard through the contact points. This enables power supply to the keyboard.
  • the keyboard can transmit key position information to the electronic device through the contact points.
  • This signal transmission method does not require built-in Bluetooth chips in electronic devices and keyboards, reducing device costs.
  • this signal transmission method is wired transmission, which is more stable than wireless transmission methods such as Bluetooth transmission. It also uses fewer contact points, reduces the complexity of the layout design of contact points of electronic devices and keyboards, and eases Contamination issues due to exposed contact points.
  • this application provides a signal transmission method.
  • the method can be applied to an electronic device provided with a first low-pass filter, a second low-pass filter, a first high-pass filter, a second high-pass filter, a first contact point and a second contact point.
  • the first low-pass filter and the first high-pass filter are respectively connected to the first contact point
  • the second low-pass filter and the second high-pass filter are respectively connected to the second contact point.
  • the second contact point is used to make contact with the third contact point on the keyboard
  • the first contact point is used to make contact with the fourth contact point on the keyboard.
  • the method may include: the electronic device may transmit the power signal to the first contact point through the first low-pass filter, and may also transmit the GND signal to the second contact point through the second low-pass filter.
  • the method may further include: the electronic device may receive the key position information transmitted from the keyboard to the first contact point, and may also process the key position information transmitted to the first contact point through a first high-pass filter; or, the electronic device may Receive the key position information transmitted from the keyboard to the second contact point, and process the key position information transmitted to the second contact point through a second high-pass filter; alternatively, the electronic device can receive the key position information transmitted from the keyboard to the second contact point.
  • the key position information transmitted to the first contact point can be processed by a first high-pass filter, and the key position information transmitted from the keyboard to the second contact point can be received.
  • Two high-pass filters process the key position information transmitted to the second contact point.
  • the first contact point of the electronic device can be in contact with the fourth contact point of the keyboard, and the second contact point of the electronic device can be in contact with the third contact point of the keyboard.
  • the electronic device can transmit the power signal and the GND signal to the keyboard, thereby achieving Power supply to the keyboard.
  • the electronic device can transmit the power signal to the first contact point through the first low-pass filter, and then transmit it to the fourth contact point.
  • the electronic device can also transmit the GND signal to the second contact through the second low-pass filter. point, and then transmitted to the third contact point.
  • the keyboard can also transmit the key position information to the keyboard. Specifically, the keyboard can transmit the key position information to the fourth contact point through the fourth high-pass filter, and then transmit it to the first contact point. The keyboard can also transmit the key position information to the third contact point through the third high-pass filter. and then transmitted to the second contact point. It can be understood that the electronic device can transmit the power signal and key position information through the first contact point and the fourth contact point, and separate the power signal through the first low-pass filter and the fourth low-pass filter, and The key position information is separated through the first high-pass filter and the fourth high-pass filter.
  • the electronic device can transmit the GND signal and the key position information through the second contact point and the third contact point, and separate the GND signal through the second low-pass filter and the third low-pass filter, and The key position information is separated through the second high-pass filter and the third high-pass filter.
  • the above method does not require built-in Bluetooth chips in electronic devices and keyboards, reduces device costs, and is more stable than wireless transmission methods such as Bluetooth transmission.
  • the contact points are larger and occupy a larger space on the circuit board.
  • the contact points on the electronic device correspond to the contact points on the keyboard, that is to say , after the position of the contact point on the electronic device is determined, the position of the contact point on the keyboard will be correspondingly restricted, and the contact point cannot be deployed anywhere on the keyboard. This means that the greater the number of contact points on an electronic device and keyboard, the more complex the layout design will be.
  • the above method uses fewer contact points to realize communication between the electronic device and the keyboard, and reduces the complexity of the layout design of the contact points of the electronic device and the keyboard.
  • the above method uses fewer contact points to also alleviate the dirt problem and reduce the user's burden of cleaning the contact points.
  • the power signal is transmitted to the fourth contact point on the keyboard, it can continue to be transmitted to the processor of the keyboard through the fourth low-pass filter.
  • the GND signal is transmitted to the third contact point on the keyboard, it can continue to be transmitted to the processor of the keyboard through the third low-pass filter.
  • the processor in the electronic device will process the key position information to obtain the content represented by the key pressed by the user, that is, the user's input content, and transmit the input content to the display screen for display.
  • the electronic device may be the electronic device 100 mentioned later, and the keyboard may be the keyboard 200 mentioned later.
  • first contact point may be the contact point 1 mentioned later, and the second contact point may be the contact point 1 mentioned later.
  • Contact point 2 the third contact point may be contact point 3 mentioned later, and the fourth contact point may be contact point 4 mentioned later.
  • the first low-pass filter may be the low-pass filter 1 mentioned later, and the second low-pass filter may be the low-pass filter 2 mentioned later.
  • the first high-pass filter may be the high-pass filter 1 mentioned later, and the second high-pass filter may be the high-pass filter 2 mentioned later.
  • the first contact point may be the contact point 101 and the second contact point may be the contact point 102. In some embodiments of the present application, the first contact point may be the contact point 103 and the second contact point may be the contact point 104. In some embodiments of the present application, the first contact point may be the contact point 105 and the second contact point may be the contact point 106. In some embodiments of the present application, the first contact point may be contact point 107 and the second contact point may be contact point 108.
  • the third contact point may be the contact point 203 and the fourth contact point may be the contact point 204. In some embodiments of the present application, the third contact point may be the contact point 205 and the fourth contact point may be the contact point 206.
  • the key position information is used to represent the position of the pressed key on the keyboard. It can also be understood that the key position information includes the position code of the pressed key on the keyboard.
  • the key position information may include several position codes. That is, the keyboard does not need to transmit a position code to the electronic device after obtaining it, but instead obtains multiple position codes and then packages the position codes and sends them to the electronic device. This method can improve transmission efficiency.
  • the key position information may be signal 1 and/or signal 2 mentioned below. It can be understood that when the key position information is transmitted through the first contact point and the fourth contact point, the key position information may be the signal 1 mentioned later. In the case where the key position information is transmitted through the second contact point and the third contact point, the key position information may be signal 2 mentioned later. In the case where the key position information is transmitted through the first contact point, the second contact point, the third contact point and the fourth contact point, the key position information may include Signal 1 and Signal 2 mentioned later.
  • the first low-pass filter includes a magnetic bead of not less than 100 ohms
  • the second low-pass filter includes a magnetic bead of not less than 100 ohms.
  • the first high-pass filter includes at least one capacitor and at least one inductor
  • the second high-pass filter includes at least one capacitor and at least one inductor.
  • both the first low-pass filter and the second low-pass filter may include a magnetic bead of not less than 100 ohms, thereby distinguishing power signals, GND signals and other high-frequency signals.
  • the first high-pass filter may include at least one capacitor and at least one inductor
  • the second high-pass filter may also include at least one capacitor and at least one inductor.
  • the resistance values of the capacitor and inductor can be determined based on the frequency of the key position information. For details, refer to the examples given below.
  • a capacitor and an inductor are connected in series to form a first high-pass filter.
  • the first high-pass filter can be composed of a capacitor C2 and an inductor L3 connected in series. It is understandable that the parameters of the capacitor C2 and the inductor L3 can be referred to below, and can also be set separately according to actual conditions, and the present application does not limit this.
  • a capacitor and an inductor can also be connected in series to form a second high-pass filter.
  • the key position information may be a USB signal.
  • the key position information can be designed as a USB signal.
  • the key position information The transmission of the key position information can refer to the USB communication protocol. It can be understood that when the key position information is a USB signal, the keyboard can transmit the key position information through the third contact point and the fourth contact point. This transmission method is compatible with some processors and there is no need to design the processor in the electronic device.
  • the first low-pass filter when the key information is a USB signal, may include a magnetic bead of not less than 100 ohms, and the second low-pass filter may include a magnetic bead of not less than 100 ohms.
  • the first high-pass filter may include a capacitor and an inductor connected in series, and the first high-pass filter may also include a capacitor and an inductor connected in series.
  • the keyboard may also transmit key position information only through the third contact point or the fourth contact point.
  • the electronic device can receive key position information transmitted from the keyboard to the first contact point, and can also use a first high-pass filter to process the key position information transmitted to the first contact point.
  • the information is processed; or, the electronic device can receive the key position information transmitted from the keyboard to the second contact point, and can also process the key position information transmitted to the second contact point through a second high-pass filter; or, the electronic device can receiving key position information transmitted from the keyboard to the first contact point, processing the key position information transmitted to the first contact point through a first high-pass filter, and receiving key position information transmitted from the keyboard to the second contact point,
  • the method may further include: the electronic device may pass the first information processed by the first high-pass filter through the first contact point.
  • the contact point is sent to the keyboard; alternatively, the electronic device can send the first information processed by the second high-pass filter to the keyboard through the second contact point.
  • the first message is used to request the keyboard to establish a communication connection.
  • the method may further include: the electronic device may receive the second information sent by the keyboard through the first contact point, and may also process the second information through the first high-pass filter; or, the electronic device may receive the second information through the second contact point.
  • the second information may also be processed through a second high-pass filter.
  • the second information is used to indicate that the keyboard establishes a communication connection with the electronic device.
  • the second information is used to indicate that the keyboard agrees to establish a communication connection with the electronic device.
  • the first information may be signal 1 or signal 2 mentioned below.
  • the second signal may be signal 1 or signal 2 mentioned below.
  • the second signal may be an ACK signal.
  • the key position information may be an I2C signal.
  • the key position information can be designed as an I2C signal.
  • the transmission of key position information can refer to the I2C communication protocol. It can be understood that when the key position information is an I2C signal, the keyboard can transmit the key position information through the third contact point and the fourth contact point. This transmission method is adapted to some processors and does not require processing in the electronic device. device for design.
  • the first low-pass filter may include at least two inductors and at least one capacitor
  • the second low-pass filter may include at least two inductors and at least one capacitor
  • the first high-pass filter may include at least one capacitor and at least one inductor
  • the second high-pass filter may include at least one capacitor and at least one inductor.
  • the first low-pass filter when the key position information is an I2C signal, can It consists of two inductors and a capacitor, where one inductor is connected in series with the capacitor and the other inductor is connected in parallel with the capacitor.
  • the first low-pass filter may be composed of a capacitor C1 and an inductor L1 connected in parallel, and an inductor L2 connected in series with the capacitor C1 and the inductor L1.
  • the parameters of the capacitor C1, the inductor L1 and the inductor L2 can be referred to below, and can also be set separately according to the actual situation. This application does not limit this.
  • the second low-pass filter may include two inductors and a capacitor, where one inductor is connected in series with the capacitor and the other inductor is connected in parallel with the capacitor.
  • capacitors and inductors included in the first low-pass filter and the second low-pass filter are not limited to the above examples, and this application does not limit this.
  • this application provides a signal transmission method.
  • the method can be applied to a keyboard provided with a third low-pass filter, a fourth low-pass filter, a third high-pass filter, a fourth high-pass filter, a third contact point and a fourth contact point.
  • the third low-pass filter and the third high-pass filter are respectively connected to the third contact point, and the fourth low-pass filter and the fourth high-pass filter are respectively connected to the fourth contact point.
  • the fourth contact point is used to contact the first contact point on the electronic device, and the third contact point is used to contact the second contact point on the electronic device.
  • the method may include: the keyboard may receive a power signal transmitted from the electronic device to the fourth contact point, and may also process the power signal through a fourth low-pass filter; the keyboard may receive a GND signal transmitted from the electronic device to the third contact point, The GND signal can also be processed through a third low-pass filter.
  • the method may further include: the keyboard may transmit the key position information processed by the third high-pass filter to the electronic device through the third contact point; or the keyboard may transmit the key position information processed by the fourth high-pass filter through the third contact point.
  • the four contact points are transmitted to the electronic device; alternatively, the keyboard can transmit the key position information processed by the third high-pass filter to the electronic device through the third contact point, and can also transmit the key position information processed by the fourth high-pass filter. Information is transmitted to the electronic device through the fourth contact point.
  • the above method does not require built-in Bluetooth chips in electronic devices and keyboards, reduces device costs, is more stable than wireless transmission methods such as Bluetooth transmission, and uses fewer contact points to achieve communication between electronic devices and keyboards, reducing the cost of The complexity of the layout design of the contact points of electronic devices and keyboards.
  • the above method uses fewer contact points to also alleviate the dirt problem and reduce the user's burden of cleaning the contact points.
  • the third low-pass filter may be the low-pass filter 3 mentioned later, and the fourth low-pass filter may be the low-pass filter 4 mentioned later.
  • the third high-pass filter may be the high-pass filter 3 mentioned later, and the fourth high-pass filter may be the high-pass filter 4 mentioned later.
  • the third low-pass filter may include a magnetic bead of not less than 100 ohms
  • the fourth low-pass filter may include a magnetic bead of not less than 100 ohms.
  • the third high-pass filter may include at least one capacitor and at least one inductor
  • the fourth high-pass filter may include at least one capacitor and at least one inductor.
  • the key position information is a USB signal.
  • the keyboard can transmit the key position information processed by the third high-pass filter to the electronic device through the third contact point; alternatively, the keyboard can transmit the key position information processed by the fourth high-pass filter to the electronic device.
  • the key position information processed by the processor is transmitted to the electronic device through the fourth contact point; alternatively, the keyboard can pass through the third Qualcomm
  • the method may also include : The keyboard can receive the first information sent by the electronic device through the third contact point, and can also process the first information through the third high-pass filter; or, the keyboard can receive the first information through the fourth contact point, and can also process the first information through the third contact point.
  • the method may further include: the keyboard may send the second information processed by the third high-pass filter to the electronic device through the third contact point; or the keyboard may send the second information processed by the fourth high-pass filter through the third contact point. Three contact points are sent to the electronic device.
  • the second information is used to indicate that the keyboard establishes a communication connection with the electronic device.
  • the key position information may be an I2C signal.
  • the third low-pass filter may include at least two inductors and at least one capacitor
  • the fourth low-pass filter may include at least two inductors and at least one capacitor.
  • the first high-pass filter may include at least one capacitor and at least one inductor
  • the second high-pass filter may include at least one capacitor and at least one inductor.
  • the present application provides an electronic device.
  • the electronic device may include a first low pass filter, a second low pass filter, a first high pass filter, a second high pass filter, a first contact point and a second contact point.
  • the first low-pass filter and the first high-pass filter are respectively connected to the first contact point, and the second low-pass filter and the second high-pass filter are respectively connected to the second contact point.
  • the second contact point can be used to make contact with a third contact point on the keyboard.
  • the first contact point may be used to make contact with a fourth contact point on the keyboard.
  • a first low-pass filter may be used to transmit the power signal to the first contact point.
  • a second low-pass filter can be used to transmit the GND signal to the second contact point.
  • the first high-pass filter can be used to process the key position information transmitted from the keyboard to the first contact point; or, the second high-pass filter can be used to process the key position information transmitted from the keyboard to the second contact point; or, The first high-pass filter may be used to process key position information transmitted from the keyboard to the first contact point, and the second high-pass filter may be used to process key position information transmitted from the keyboard to the second contact point.
  • the first low-pass filter includes a magnetic bead of not less than 100 ohms
  • the second low-pass filter includes a magnetic bead of not less than 100 ohms.
  • the first high-pass filter includes at least one capacitor and at least one inductor
  • the second high-pass filter includes at least one capacitor and at least one inductor.
  • the first low-pass filter may include at least two inductors and at least one capacitor
  • the second low-pass filter may include at least two inductors and at least one capacitor
  • the first high-pass filter may include at least one capacitor and at least one inductor
  • the second high-pass filter may include at least one capacitor and at least one inductor.
  • the first high-pass filter can also be used to transmit the first information to the first contact point; or the second high-pass filter can also be used to transmit the first information to the second point of contact.
  • the first message is used to request the keyboard to establish a communication connection.
  • the first high-pass filter can also be used to process the second information transmitted from the keyboard to the first contact point; or the second high-pass filter can also be used to process the second information transmitted from the keyboard to the second contact point. deal with.
  • the second information is used to indicate that the keyboard establishes a communication connection with the electronic device.
  • this application provides a keyboard.
  • the keyboard may include a third low pass filter, a fourth low pass filter filter, a third high-pass filter, a fourth high-pass filter, a third contact point and a fourth contact point.
  • the third low-pass filter and the third high-pass filter are respectively connected to the third contact point, and the fourth low-pass filter and the fourth high-pass filter are respectively connected to the fourth contact point.
  • the fourth contact point may be used to make contact with the first contact point on the electronic device.
  • the third contact point may be used to make contact with the second contact point on the electronic device.
  • the third low-pass filter may be used to process the GND signal transmitted from the electronic device to the third contact point.
  • the fourth low-pass filter may be used to process the power signal transmitted from the electronic device to the fourth contact point.
  • the third high-pass filter may be used to transmit the key position information to the third contact point; or the fourth high-pass filter may be used to transmit the key position information to the fourth contact point; or the third high-pass filter may be used to The key position information is transmitted to the third contact point, and a fourth high-pass filter may be used to transmit the key position information to the fourth contact point.
  • the third low-pass filter may include a magnetic bead of not less than 100 ohms
  • the fourth low-pass filter may include a magnetic bead of not less than 100 ohms.
  • the third high-pass filter may include at least one capacitor and at least one inductor
  • the fourth high-pass filter may include at least one capacitor and at least one inductor.
  • the third low-pass filter may include at least two inductors and at least one capacitor
  • the fourth low-pass filter may include at least two inductors and at least one capacitor.
  • the first high-pass filter may include at least one capacitor and at least one inductor
  • the second high-pass filter may include at least one capacitor and at least one inductor.
  • the third high-pass filter can also be used to process the first information transmitted by the electronic device to the third contact point; or, the fourth high-pass filter can also be used to The first information transmitted by the electronic device to the fourth contact point is processed.
  • the first information may be used to request the keyboard to establish a communication connection.
  • the third high-pass filter can also be used to transmit the second information to the third contact point; or the fourth high-pass filter can also be used to transmit the second information to the fourth contact point.
  • the second information is used to indicate that the keyboard establishes a communication connection with the electronic device.
  • the present application provides a computer storage medium that includes computer instructions.
  • the computer instructions When the computer instructions are run on an electronic device, the electronic device causes the electronic device to execute any of the possible implementations of the first aspect.
  • the present application provides a computer storage medium that includes computer instructions.
  • the computer instructions When the computer instructions are run on a keyboard, the keyboard executes any of the possible implementations of the second aspect.
  • embodiments of the present application provide a chip that can be applied to electronic equipment.
  • the chip includes one or more processors, and the processor is used to call computer instructions to cause the electronic equipment to execute any of the above-mentioned first aspects.
  • embodiments of the present application provide a chip that can be applied to a keyboard.
  • the chip includes one or more processors, and the processor is used to call computer instructions to cause the keyboard to execute any one of the above second aspects. Possible implementations.
  • the electronic device provided in the third aspect, the computer storage medium provided in the fifth aspect, and the chip provided in the seventh aspect are all used to implement any possible implementation of the first aspect. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects of any possible implementation method in the first aspect, and will not be described again here.
  • the beneficial effects of any possible implementation in the above-mentioned second aspect may be referred to the beneficial effects of any possible implementation in the above-mentioned first aspect.
  • the keyboard provided by the fourth aspect and the computer memory provided by the sixth aspect are The storage medium and the chip provided in the eighth aspect are both used to execute any of the possible implementation methods of the second aspect. Therefore, the beneficial effects it can achieve can also refer to the beneficial effects of any possible implementation method in the first aspect, and will not be described again here.
  • Figure 1 is a schematic diagram of a signal transmission scenario provided by an embodiment of the present application.
  • Figure 2A is a front view of an electronic device 100 provided by an embodiment of the present application.
  • Figure 2B is a rear view of an electronic device 100 provided by an embodiment of the present application.
  • Figure 3A is a front view of another electronic device 100 provided by an embodiment of the present application.
  • Figure 3B is a rear view of yet another electronic device 100 provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a keyboard 200 provided by an embodiment of the present application.
  • Figure 5 is a schematic connection diagram of an electronic device 100 and a keyboard 200 provided by an embodiment of the present application;
  • Figure 6 is a schematic connection diagram of yet another electronic device 100 and keyboard 200 provided by an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of an electronic device 100 provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of another electronic device 100 provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of yet another keyboard 200 provided by an embodiment of the present application.
  • Figure 10 is a schematic connection diagram of yet another electronic device 100 and keyboard 200 provided by an embodiment of the present application.
  • Figure 11 is a schematic connection diagram of yet another electronic device 100 and keyboard 200 provided by an embodiment of the present application.
  • Figure 12 is a schematic diagram of the hardware structure of an electronic device 100 provided by an embodiment of the present application.
  • FIG13 is a schematic diagram of the structure of a low-pass filter 1 provided in an embodiment of the present application.
  • Figure 14 is a schematic structural diagram of a high-pass filter 1 provided by an embodiment of the present application.
  • Figure 15 is a schematic diagram of the hardware structure of a keyboard 200 provided by an embodiment of the present application.
  • Figure 16 is a schematic connection diagram of yet another electronic device 100 and keyboard 200 provided by an embodiment of the present application.
  • Figure 17 is a schematic diagram of a signal transmission process provided by an embodiment of the present application.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment may include Included in at least one embodiment of this application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
  • the tablet computer and the keyboard when the tablet computer and the keyboard have built-in wireless communication chips, the tablet computer and the keyboard can communicate through wireless connection, that is, signal transmission is performed through wireless transmission.
  • This signal transmission method is costly, consumes a lot of power, and may cause unstable signal transmission due to unstable connections.
  • the tablet computer and the keyboard can communicate through a wired connection, that is, through wired transmission. Signal transmission.
  • this wired connection method there are at least three contact points on the tablet computer, and these three contact points can be understood as the power supply end, the ground end and the communication end respectively.
  • the power supply terminal is used to transmit power signals
  • the ground terminal is used to transmit GND signals
  • the communication terminal is used to transmit communication data between the tablet computer and the keyboard. Understandably, accordingly, there are at least three contact points on the keyboard.
  • the contact points on the tablet computer are in contact with the contact points on the keyboard respectively to realize power supply and communication to the keyboard.
  • This method of signal transmission requires more contact points (a device requires at least 3 contact points), and the greater the number of contact points on tablets and keyboards, the more difficult the design becomes.
  • this signal transmission method relies on the contact points on the tablet computer and the keyboard, it is necessary to ensure that the contact points on the tablet computer and the keyboard are in good contact to ensure that the connection between the tablet computer and the keyboard is good.
  • the contact points on the tablet and the keyboard are exposed, the greater the number of contact points, the easier it is to have problems such as dirt and wear, which is less conducive to the connection between the tablet and the keyboard.
  • This application provides a signal transmission method and related equipment.
  • this signal transmission method when two contact points on the electronic device 100 are in contact with two contact points on the keyboard 200 respectively, the electronic device 100 can transmit the power signal and the GND signal through the contact points. Give the keyboard 200. That is, the electronic device 100 can provide power to the keyboard 200 . Furthermore, when the user presses a key on the keyboard 200 to perform input, the keyboard 200 may transmit the key position information to the electronic device 100 through the contact point.
  • This signal transmission method does not require a built-in Bluetooth chip in the electronic device 100 and the keyboard 200, thereby reducing device costs.
  • this signal transmission method is wired transmission, which is more stable than Bluetooth transmission, and also uses fewer contact points, reducing the complexity of the layout design of the contact points of electronic devices and keyboards.
  • Figure 1 is a schematic diagram of a signal transmission scenario provided by an embodiment of the present application.
  • a communication connection is established between the electronic device 100 and the keyboard 200 .
  • Signal transmission can occur between the electronic device 100 and the keyboard 200 .
  • the electronic device 100 may include two contact points, and correspondingly, the keyboard 200 may also include two contact points. Two contact points on the electronic device 100 are in contact with two contact points on the keyboard 200 respectively. The electronic device 100 and the keyboard 200 can transmit signals through these contact points.
  • the electronic device 100 may include electronic devices such as mobile phones and tablet computers. This application does not limit the specific type of the electronic device 100 .
  • the electronic device 100 includes two contact points on the back of the electronic device 100 .
  • the side of the electronic device 100 facing the user is called the front
  • the side of the electronic device 100 facing away from the user is called the back.
  • the surface of the electronic device 100 where the display screen is located is the front of the electronic device 100
  • the surface of the electronic device 100 facing away from the display screen is the back of the electronic device 100 .
  • the electronic device 100 includes a front camera and a rear camera
  • the surface of the electronic device 100 where the front camera is located is the front of the electronic device 100
  • the surface of the electronic device 100 where the rear camera is located is the front of the electronic device 100. 100 on the back.
  • the electronic device 100 may be a mobile phone.
  • Figure 2A is a front view of an electronic device 100 provided by an embodiment of the present application.
  • Figure 2B is a rear view of an electronic device 100 provided by an embodiment of the present application.
  • the back of the mobile phone is provided with There are 2 contact points, contact point 101 and contact point 102. That is, the contact point 101 and the contact point 102 are provided on the back of the electronic device 100 .
  • the electronic device 100 may be a tablet computer.
  • Figure 3A is a front view of another electronic device 100 provided by an embodiment of the present application.
  • Figure 3B is a rear view of another electronic device 100 provided by an embodiment of the present application.
  • the tablet computer There are two contact points on the back, namely contact point 103 and contact point 104. That is, the contact point 103 and the contact point 104 are provided on the back of the electronic device 100 .
  • the keyboard 200 may include a key portion 201 and a fixing portion 202 .
  • the fixing part 202 can be buckled on the button part 201.
  • the key part 201 may include several keys and may also include a touch panel.
  • the fixing part 202 is used to support and fix the electronic device 100.
  • the key part 201 has a first surface 2011, and the fixing part 202 has a second surface 2021. When the fixing part 202 is engaged with the key part 201, the first surface 2011 and the second surface 2021 are arranged oppositely. Contact points 203 and 204 are provided on the second surface 2021 of the fixing part 202 .
  • the x-axis direction in this coordinate system is the width direction of the key portion 201
  • the y-axis direction is the length direction of the key portion 201
  • the z-axis direction is the thickness of the key portion 201. direction. It can be understood that the first surface 2011 is parallel to the xOy plane.
  • the keyboard 200 may further include a connection portion.
  • the fixing part 202 can be connected to the key part 201 through the connecting part.
  • the connecting part may be a rotating component.
  • the connection part may be a damping rotating shaft.
  • the fixing part 202 can be rotatably connected to the key part 201 through the connecting part.
  • the electronic device 100 can be installed on the keyboard 200 .
  • the electronic device 100 may be installed on the second surface 2021 of the fixing part 202 .
  • the contact point 101 on the back of the electronic device 100 can be in contact with the contact point 204 on the second surface 2021
  • the contact point 102 on the back of the electronic device 100 can be in contact with the second surface.
  • the contact points 203 on 2021 are in contact.
  • FIG. 5 shows that in FIG.
  • the contact point 104 on the back of the electronic device 100 may be in contact with the contact point 203 on the second surface 2021
  • the contact point 103 on the back of the electronic device 100 may be in contact with the second surface 2021
  • Contact points 204 on surface 2021 are in contact.
  • the electronic device 100 includes two contact points on the side of the electronic device 100 . It can also be understood that the two contact points included in the electronic device 100 are on the sides of the electronic device 100 . In this application, when the user uses the electronic device 100, the side of the electronic device 100 that is not facing the user and not facing away from the user is the side.
  • the electronic device 100 may be a mobile phone. As shown in Figure 7, there are two contact points on the side of the mobile phone where the charging port is located, namely contact point 105 and contact point 106. That is to say, the contact points 105 and 106 are provided on the side of the electronic device 100 .
  • the electronic device 100 may be a tablet computer. As shown in Figure 8, there are two contact points on the side of the mobile phone where the charging port is located, namely contact point 107 and contact point 108. That is to say, the contact points 107 and 108 are provided on the side of the electronic device 100 .
  • the keyboard 200 may include a key portion 201 and a fixing portion 202 .
  • the key part 201 has a first surface 2011, and the fixing part 202 has a second surface 2021.
  • a contact point 205 and a contact point 206 are provided on the first surface 2011 of the key portion 201 .
  • the keyboard 200 may also include a connecting portion.
  • the key part 201, the fixing part 202 and the connecting part reference may be made to the above, and details will not be repeated here.
  • the electronic device 100 can be installed on the keyboard 200 .
  • the electronic device 100 may be installed on the second surface 2021 of the fixing part 202 .
  • the contact point 105 on the side of the electronic device may be in contact with the contact point 206 on the first surface 2011
  • the contact point 106 on the side of the electronic device may be in contact with the first surface 2011 .
  • the contact points 205 on 2011 are in contact.
  • the contact point 107 on the side of the electronic device can be in contact with the contact point 206 on the first surface 2011, and the contact point 108 on the side of the electronic device can be in contact with the first surface 2011.
  • Contact points 205 on surface 2011 are in contact.
  • the two contact points on the electronic device 100 and the two contact points on the keyboard 200 are Pogo pins. It is understandable that Pogo pin is a precision connector used in electronic products such as mobile phones. It is widely used in semiconductor equipment for connection. For the relevant description of Pogo pin, please refer to the relevant technical documents, and will not be explained here.
  • the two contact points on the electronic device 100 are both pin headers, and the two contact points on the keyboard 200 are both pin pins.
  • the pin head can be understood as a metal patch. Pins can be understood as metal spring pins. After the pin head comes into contact with the pin, the pin can shrink for better fitting and connection.
  • the contact points 101 and 102 on the back of the electronic device 100 may be pin headers, and the contact points 203 and 204 on the second surface 2021 of the fixing part 202 of the keyboard 200 may be pin headers.
  • the contact points 103 and 104 on the back of the electronic device 100 may be pin headers, and the contact points 203 and 204 on the second surface 2021 of the fixing part 202 of the keyboard 200 may be pin headers.
  • the contact points 105 and 106 on the side of the electronic device 100 may be pin headers, and the contact points 205 and 206 on the first surface 2011 of the key part 201 of the keyboard 200 may be pin pins.
  • the contact points 107 and 108 on the side of the electronic device 100 may be pin headers, and the contact points 205 and 206 on the first surface 2011 of the key portion 201 of the keyboard 200 may be pin pins.
  • the two contact points on the electronic device 100 are both pins, and the two contact points on the keyboard 200 are both pin headers.
  • the two contact points on the electronic device 100 are pin needles and pin headers respectively, and the two contact points on the keyboard 200 are pin pins and pin headers respectively.
  • the pins on the electronic device 100 are in contact with the pin headers on the keyboard 200
  • the pin headers on the electronic device 100 are in contact with the pins on the keyboard 200 .
  • positions of the two contact points on the electronic device 100 are not limited to the above examples, and the positions of the two contact points on the keyboard 200 are not limited to the above examples.
  • FIG. 12 is a schematic diagram of the hardware structure of an electronic device 100 provided in an embodiment of the present application.
  • the electronic device 100 may include a processor, a memory, a display screen, a battery, low pass filter 1, low pass filter 2, high pass filter 1, high pass filter 2, and a housing. Among them, contact point 1 and contact point 2 are provided on the housing.
  • the processor may include one or more processing units.
  • the processor can include an application processor (Application Processor, AP), modem processor, graphics processor (Graphics Processing unit, GPU), image signal processor (i.e. ISP), controller, memory, video codec processor, digital signal processor (Digital Signal Processor, DSP), baseband processor, and/or neural network processor (Neural-network Processing Unit, NPU), etc.
  • application processor Application Processor, AP
  • modem processor graphics processor
  • GPU Graphics Processing unit
  • image signal processor i.e. ISP
  • controller memory
  • video codec processor digital signal processor
  • DSP Digital Signal Processor
  • baseband processor baseband processor
  • neural network processor Neural-network Processing Unit
  • a processor may include one or more interfaces.
  • USB interface is an interface that complies with the USB standard specification. It can be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. It is understandable that the full English name of USB is Universal Serial Bus, which means Universal Serial Bus in Chinese. It is an external bus standard used to standardize the connection and communication between computers and external devices.
  • the interface included in the processor can also be used to connect other electronic devices, such as AR devices.
  • the processor in the electronic device 100 can process the received key position information to obtain corresponding coded information. For example, ASCII code.
  • ASCII American Standard Code for Information Interchange
  • its Chinese meaning is American Standard Code for Information Interchange.
  • ASCII is a computer coding system based on the Latin alphabet.
  • ASCII code uses a specified combination of 7- or 8-bit binary numbers to represent 128 or 256 possible characters.
  • Standard ASCII code also called basic ASCII code, uses 7 binary digits (the remaining 1 binary digit is 0) to represent all uppercase and lowercase letters, numbers 0 to 9, punctuation marks, and special controls used in American English. character.
  • the display screen is used to display images, videos, etc.
  • the display screen includes a display panel.
  • the display panel can use a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (Active-Matrix Organic Light).
  • the electronic device 100 may include 1 or N display screens, where N is a positive integer greater than 1.
  • the electronic device 100 can display content input by the user through the keyboard 200 on the display screen.
  • Batteries are used to power electronic device 100 .
  • the battery in the electronic device 100 may be a lithium battery.
  • the electronic device 100 may further include a charging management module and a power management model.
  • the charging management module is used to receive charging input from the charger. While the charging management module charges the battery, it can also provide power to the electronic device 100 through the power management module.
  • the battery in the electronic device 100 can also power the keyboard 200 .
  • the battery in the electronic device 100 transmits the power signal and the GND signal to the keyboard 200, thereby powering the keyboard 200.
  • a low-pass filter is an electronic filtering device that allows signals below the cut-off frequency to pass, but cannot pass signals above the cut-off frequency. That is to say, low-pass filter 1 and low-pass filter 2 are used to filter out high-frequency signals.
  • the low-pass filter 1 can allow the power signal to pass
  • the low-pass filter 2 can allow the GND signal to pass.
  • low-pass filter 1 and low-pass filter 2 may be magnetic beads.
  • Magnetic beads have high resistivity and magnetic permeability, which can be equivalent to resistors and inductors connected in series. However, the resistance and inductance values change with frequency. Magnetic beads are resistive at high frequencies and can operate over a wide frequency range. The impedance is maintained high within the range, so by selecting magnetic beads with appropriate parameters, higher frequency signals can be effectively filtered and lower frequency power signals/GND signals can pass. It can be understood that the parameters of the magnetic beads corresponding to the low-pass filter 1 and the low-pass filter 2 can be set according to actual needs, and this application does not limit this.
  • the resistance of the magnetic beads corresponding to low-pass filter 1 and low-pass filter 2 may not be less than 100 ohms.
  • the low-pass filter 1 may be a 100-ohm magnetic bead.
  • the low-pass filter 2 may be a 150-ohm magnetic bead.
  • the resistance of the magnetic beads corresponding to low-pass filter 1 and low-pass filter 2 may be no less than 100 ohms and no more than 500 ohms.
  • the low-pass filter 1 may be composed of a capacitor and an inductor.
  • the low-pass filter 1 can be composed of a capacitor C1 and an inductor L1 connected in parallel, and an inductor L2 connected in series with the capacitor C1 and the inductor L1.
  • the capacitor C1 is 10 nanofarads
  • the inductor L1 is 150 microhenries
  • the inductor L2 is 100 microhenries.
  • low-pass filter 2 can also be composed of capacitors and inductors.
  • the structure of low-pass filter 2 can refer to the structure of low-pass filter 1 (as shown in Figure 13).
  • the high-pass filter 1 may be composed of a capacitor and an inductor. As shown in Figure 14, the high-pass filter 1 can be composed of a capacitor C2 and an inductor L3 connected in series. Among them, the capacitor C2 is 1 nanofarad and the inductor L3 is 100 nanohenries. In this case, signals in the 3MHz-70MHz range pass through high-pass filter 1 with little attenuation. Signals in other frequency bands will be blocked by high-pass filter 1. It should be noted that the high-pass filter 1 can also have other structures, which is not limited in this application. For example, the high-pass filter 1 may also include more capacitors and/or inductors.
  • the parameters of the capacitor and/or the inductor included in the high-pass filter 1 may change.
  • the high-pass filter 2 can also be composed of a capacitor and an inductor.
  • the structure of high-pass filter 2 can refer to the structure of high-pass filter 1 (as shown in Figure 14).
  • a contact point 1 and a contact point 2 are provided on the housing of the electronic device 100 .
  • Contact point 1 is connected to low-pass filter 1 and high-pass filter 1 respectively.
  • Contact point 2 is connected to low-pass filter 2 and high-pass filter 2 respectively.
  • contact point 1 and contact point 2 are contact points visible to the user. In fact, contact point 1 and contact point 2 are only part of the connector. Most of the connector is inside the electronic device 100 and is invisible to the user. of. It is understandable that the connector plays a connecting role, and the connector can be the Pogo pin mentioned above.
  • contact point 1 may be contact point 101 and contact point 2 may be contact point 102. In some embodiments of the present application, contact point 1 may be contact point 103 and contact point 2 may be contact point 104. In some embodiments of the present application, contact point 1 may be contact point 105 and contact point 2 may be contact point 106. In some embodiments of the present application, contact point 1 may be contact point 107 and contact point 2 may be contact point 108.
  • the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the electronic device 100 .
  • the electronic device 100 may include more or fewer components than shown in the figures, or some components may be combined, some components may be separated, or some components may be arranged differently.
  • the components shown may be represented by hardware, software, or both software and hardware. The combination of components is realized.
  • FIG. 15 is a schematic diagram of the hardware structure of a keyboard 200 provided by an embodiment of the present application.
  • the keyboard 200 may include a processor, keys, low pass filter 3, low pass filter 4, high pass filter 3, high pass filter 4 and a housing. Among them, contact points 3 and 4 are provided on the housing.
  • the processor in the keyboard 200 can receive the power signal and the GND signal transmitted by the electronic device 100 .
  • the processor in the keyboard 200 can also transmit key position information to the electronic device 100 .
  • the processor in the keyboard 200 may be disposed on a circuit board in the keyboard 200 .
  • the circuit board of the keyboard 200 may also be provided with logic circuits and control circuits.
  • the logic circuit may include several key switches. Each button can be connected to a button switch. Key switches are used to determine whether the corresponding key is pressed.
  • the control circuit is used to identify the pressed button and obtain the position code corresponding to the button.
  • the control circuit may include a key recognition scanning circuit, an encoding circuit, an interface circuit, etc. For descriptions of the key recognition scanning circuit, encoding circuit and interface circuit, please refer to relevant technical documents and will not be explained here.
  • the shell of the keyboard 200 is provided with contact points 3 and 4 .
  • Contact point 3 is connected to low-pass filter 3 and high-pass filter 3 .
  • the contact point 4 is connected to the low-pass filter 4 and the high-pass filter 4 .
  • the structure of low-pass filter 3 can refer to the structure of low-pass filter 2 .
  • the structure of low-pass filter 4 can refer to the structure of low-pass filter 1.
  • the structure of high-pass filter 3 can refer to the structure of high-pass filter 2.
  • the structure of high-pass filter 4 can refer to the structure of high-pass filter 1 .
  • contact point 3 and contact point 4 are contact points visible to the user. In fact, contact point 3 and contact point 4 are only part of the connector. Most of the connector is inside the keyboard 200 and is invisible to the user. . It is understandable that the connector plays a connecting role, and the connector can be the Pogo pin mentioned above.
  • contact point 3 may be contact point 203 and contact point 4 may be contact point 204. In some embodiments of the present application, contact point 3 may be contact point 205 and contact point 4 may be contact point 206.
  • the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the keyboard 200 .
  • the keyboard 200 may include more or fewer components than shown in the figures, or some components may be combined, some components may be separated, or some components may be arranged differently.
  • the components illustrated may be implemented in hardware, software, or a combination of software and hardware.
  • the electronic device 100 transmits the power signal and the GND signal to the keyboard 200 through the contact points.
  • the keyboard 200 transmits the key position information to the electronic device 100 through the contacted contact points.
  • the electronic device 100 includes a contact point 1 and a contact point 2
  • the keyboard 200 includes a contact point 3 and a contact point 4 .
  • the contact point 1 on the electronic device 100 may be in contact with the contact point 4 on the keyboard 200
  • the contact point 2 on the electronic device 100 may be in contact with the contact point 3 on the keyboard 200 .
  • the electronic device 100 can pass the contact point 1 and the contact point 4
  • the power signal is transmitted to the keyboard 200, and the GND signal can also be transmitted to the keyboard 200 through contact point 2 and contact point 3.
  • the keyboard 200 can transmit the key position information to the electronic device 100 through the contact point 4 and the contact point 1, and can also transmit the key position information to the electronic device 100 through the contact point 3 and the contact point 2.
  • the electronic device 100 may send information to the keyboard 200 to request communication with the keyboard 200. After receiving the information, the keyboard 200 may send an ACK signal to the electronic device 100 . After the keyboard 200 sends the ACK signal, the key position information can be sent to the electronic device 100 .
  • the key position information may include a position code.
  • Position codes can be used to indicate the location of keys.
  • the keyboard 200 determines the position of the key pressed by the user through the key recognition scanning circuit and the encoding circuit, and obtains the position code of the pressed key.
  • ACK Acknowledge character
  • ACK is a confirmation character.
  • data communication a transmission control character sent by the receiving station to the sending station. ACK indicates that the data sent has been confirmed and received correctly.
  • the receiver successfully receives the data it will reply with an ACK data.
  • the ACK signal is used to indicate that the keyboard 200 establishes a communication connection with the electronic device 100 .
  • the electronic device 100 may be provided with two low-pass filters and two high-pass filters, namely low-pass filter 1, low-pass filter 2, high-pass filter 1 and high-pass filter 2.
  • the low-pass filter 1 and the high-pass filter 1 can be connected to the contact point 1 respectively
  • the high-pass filter 2 and the low-pass filter 2 can be connected to the contact point 2 respectively.
  • the keyboard 200 can be provided with two low-pass filters and two high-pass filters, namely low-pass filter 3, low-pass filter 4, high-pass filter 3 and high-pass filter 4.
  • the low-pass filter 3 and the high-pass filter 3 can be connected to the contact point 3 respectively
  • the low-pass filter 4 and the high-pass filter 4 can be connected to the contact point 4 respectively.
  • the power signal in the electronic device 100 passes through the low-pass filter 1, it can be transmitted to the keyboard 200 through the contact point 1 and the contact point 4.
  • the GND signal in the electronic device 100 passes through the low-pass filter 2
  • the signal can be passed through the low-pass filter 4 to obtain a power signal.
  • the signal can be passed through the low-pass filter 3 to obtain the GND signal.
  • the key position information in the keyboard 200 After the key position information in the keyboard 200 passes through the high-pass filter 4, it can be transmitted to the electronic device 100 through the contact point 4 and the contact point 1.
  • the key position information in the keyboard 200 can also be transmitted to the electronic device 100 through the contact point 3 and the contact point 2 after passing through the high-pass filter 3 .
  • the signal After the electronic device 100 receives the signal transmitted through the contact point 1, the signal can be passed through the high-pass filter 1 to obtain key position information.
  • the signal After the electronic device 100 receives the signal transmitted through the contact point 2, the signal can be passed through the high-pass filter 2 to obtain the key position information.
  • the electronic device 100 can power the keyboard 200 .
  • the power signal in the electronic device 100 is transmitted from the battery to the low-pass filter 1, then transmitted to the contact point 4 on the keyboard 200 via the contact point 1, and finally transmitted to the contact point 4 of the keyboard 200 via the low-pass filter 4.
  • the GND signal in the electronic device 100 is transmitted from the battery to the low-pass filter 2 , then transmitted to the contact point 3 on the keyboard 200 via the contact point 2 , and finally transmitted to the processor of the keyboard 200 via the low-pass filter 3 .
  • both the power signal and the GND signal are low-frequency signals.
  • the frequency of the power signal and the GND signal may be in the range of 1Hz-100Hz.
  • the electronic device 100 and the keyboard 200 can also transmit high-frequency signals.
  • Signal 1 and Signal 2 shown in Figure 17 are high-frequency signals.
  • the keyboard 200 can perform input through the key recognition scanning circuit. Determine the position of the key pressed by the user, thereby obtaining the position information of the key pressed by the user.
  • the keyboard 200 can transmit the key position information to the electronic device 100 .
  • signal 1 may include key position information
  • signal 2 may also include key position information.
  • the keyboard 200 can transmit the signal 1 to the high-pass filter 4 , then to the contact point 1 on the electronic device 100 via the contact point 4 , and finally to the processor of the electronic device 100 via the high-pass filter 1 .
  • the keyboard 200 can transmit the signal 2 to the high-pass filter 3 , then to the contact point 2 on the electronic device 100 via the contact point 3 , and finally to the processor of the electronic device 100 via the high-pass filter 2 .
  • signal 1 and signal 2 are position code packed signals. In other words, signal 1 and signal 2 contain multiple position codes.
  • signal 1 and signal 2 are USB signals.
  • signal 1 and signal 2 are I2C signals. It is understandable that the relevant description of the USB signal can refer to the USB communication protocol and related standards. The full English name of I2C is Inter-Integrated Circuit, which literally means between integrated circuits. For relevant descriptions of I2C signals, please refer to the I2C communication protocol and related standards. For example, when signal 1 and signal 2 are USB signals, the frequencies of signal 1 and signal 2 are 12 MHz.
  • the frequencies of signal 1 and signal 2 may be 100KHz.
  • the frequencies of signal 1 and signal 2 can also be 400KHz.
  • the frequencies of signal 1 and signal 2 can also be 1MHz.
  • low-pass filter 1, low-pass filter 2, low-pass filter 3 and low-pass filter 4 can each be made of not less than 100 ohms.
  • the composition of the magnetic beads please refer to the above description of the low-pass filter 1, and will not be repeated here.
  • low-pass filter 1, low-pass filter 2, low-pass filter 3 and low-pass filter 4 can all be composed of magnetic beads of no less than 100 ohms. Specifically, Refer to the above description of low-pass filter 1, which will not be described again here.
  • low-pass filter 1, low-pass filter 2, low-pass filter 3 and low-pass filter 4 can all be composed of capacitors and inductors, For details, reference may be made to the description of low-pass filter 1 and Figure 13 above, which will not be described again here.
  • low-pass filter 1, low-pass filter 2, low-pass filter 3 and low-pass filter 4 can all be composed of capacitors and inductors. For details, please refer to the above description of low-pass filter. The description of pass filter 1 and Figure 13 will not be repeated here.
  • the keyboard 200 may transmit the key position information to the electronic device 100 by sending signal 1 or signal 2 to the electronic device 100 . In some embodiments of the present application, the keyboard 200 may send signal 1 and signal 2 to the electronic device 100 to transmit key position information to the electronic device 100 .
  • the processor can process the key position information to determine the input content.
  • the input content can be understood as the character represented by the key pressed by the user.
  • the electronic device 100 may send a communication request to the keyboard 200.
  • Signal 1 and Signal 2 may be communication requests sent by the electronic device 100 to the keyboard 200 .
  • the electronic equipment 100 can transmit signal 1 to high-pass filter 1, then to contact point 4 on keyboard 200 via contact point 1, and finally to the processor of keyboard 200 via high-pass filter 4.
  • the electronic device 100 may transmit the signal 2 to the high-pass filter 2 , then to the contact point 3 on the keyboard 200 via the contact point 2 , and finally to the processor of the keyboard 200 via the high-pass filter 3 .
  • electronic device 100 may send signal 1 to keyboard 200 to request communication. In yet other embodiments of the present application, the electronic device 100 may send signal 2 to the keyboard 200 to request communication.
  • the keyboard 200 may send an ACK signal to the electronic device 100.
  • signal 1 and signal 2 may be ACK signals. It can be understood that the keyboard 200 can send the signal 1 to the electronic device 100 to agree to the communication and establish the communication connection. Keyboard 200 may also send signal 2 to electronic device 100 to agree to the communication and establish a communication connection.
  • the keyboard 200 can also send other types of signals to the electronic device 100 to agree to establish a communication connection with the electronic device 100, which is not limited in this application.

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Abstract

本申请提供了一种信号传输方法及相关设备。根据该信号传输方法，在电子设备上的2个接触点分别与键盘上的2个接触点相接触的情况下，电子设备可以将电源信号和GND信号通过该相接触的接触点传输给键盘。即电子设备可以向键盘供电。并且，在用户按下键盘上的按键来进行输入的情况下，键盘可以通过与电子设备相接触的接触点将按键位置信息传输给电子设备。这种信号传输方法无需在电子设备和键盘中内置蓝牙芯片，降低了器件成本。另外，这种信号传输方法为有线传输，比蓝牙传输等无线传输方式更稳定，而且还使用了更少的接触点，降低了电子设备和键盘的接触点的布局设计的复杂度，还缓解了由于接触点外露造成的脏污问题。

Description

一种信号传输方法及相关设备
本申请要求于2022年09月23日提交中国专利局、申请号为202211161307.0、申请名称为“一种信号传输方法及相关设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及信号传输领域，尤其涉及一种信号传输方法及相关设备。
背景技术
目前，手机、平板电脑等终端设备的发展越来越迅速。随着终端设备的不断发展，用户需求也在不断变化，从最终的基本通信需求逐渐发展为视觉、听觉和触觉等多维度的通信与娱乐需求。例如，用户需要在这些终端设备的基础上通过外部连接的键盘(即外接键盘)来更好的实现自身的输入需求。若需实现通过外接键盘在终端设备中进行输入，则终端设备和外接键盘之间需要进行信号传输。信号传输一般可以包括两种传输方式：无线传输和有线传输。无线传输的实现一般需要在终端设备和键盘中内置无线通讯芯片，成本高且功耗大，还可能出现连接不稳定的情况。而有线传输的实现一般需要考虑终端设备和键盘的接触点布局设计问题。
因此，如何在既降低成本功耗且保证稳定性，又降低终端设备和键盘的接触点的布局设计复杂度的情况下，实现终端设备和键盘之间的信号传输是目前亟待解决的问题。
发明内容
本申请提供了一种信号传输方法及相关设备。根据该信号传输方法，在电子设备上的2个接触点分别与键盘上的2个接触点相接触的情况下，电子设备可以将电源信号和GND信号通过该相接触的接触点传输给键盘，从而实现对键盘的供电。另外，键盘可以通过该相接触的接触点将按键位置信息传输给电子设备。这种信号传输方法无需在电子设备和键盘中内置蓝牙芯片，降低了器件成本。另外，这种信号传输方法属于有线传输，比蓝牙传输等无线传输方式更稳定，而且还使用了更少的接触点，降低了电子设备和键盘的接触点的布局设计的复杂度，还缓解了由于接触点外露造成的脏污问题。
第一方面，本申请提供了一种信号传输方法。该方法可以应用于设置有第一低通滤波器、第二低通滤波器、第一高通滤波器、第二高通滤波器、第一接触点和第二接触点的电子设备。其中，第一低通滤波器和第一高通滤波器分别与第一接触点相连，第二低通滤波器和第二高通滤波器分别与第二接触点相连。第二接触点用于与键盘上的第三接触点相接触，第一接触点用于与键盘上的第四接触点相接触。该方法可以包括：电子设备可以将电源信号通过第一低通滤波器传输至第一接触点，还可以将GND信号通过第二低通滤波器传输至第二接触点。该方法还可以包括：电子设备可以接收键盘传输至第一接触点的按键位置信息，还可以通过第一高通滤波器对该传输至第一接触点的按键位置信息进行处理；或者，电子设备可以接收键盘传输至第二接触点的按键位置信息，还可以通过第二高通滤波器对该传输至第二接触点的按键位置信息进行处理；或者，电子设备可以接收键盘传输至 第一接触点的按键位置信息，可以通过第一高通滤波器对该传输至第一接触点的按键位置信息进行处理，以及可以接收键盘传输至第二接触点的按键位置信息，还可以通过第二高通滤波器对该传输至第二接触点的按键位置信息进行处理。
在本申请提供的方案中，电子设备的第一接触点可以与键盘的第四接触点相接触，电子设备的第二接触点可以与键盘的第三接触点相接触。在上述两对接触点(即第一接触点与第四接触点，以及第二接触点与第三接触点)相接触的情况下，电子设备可以将电源信号和GND信号传输至键盘，从而实现对键盘的供电。具体的，电子设备可以将电源信号经过第一低通滤波器传输至第一接触点，再传输至第四接触点，电子设备还可以将GND信号经过第二低通滤波器传输至第二接触点，再传输至第三接触点。并且，在上述两对接触点(即第一接触点与第四接触点，以及第二接触点与第三接触点)相接触的情况下，键盘还可以将按键位置信息传输至键盘。具体的，键盘可以将按键位置信息经过第四高通滤波器传输至第四接触点，再传输至第一接触点，键盘还可以将按键位置信息经过第三高通滤波器传输至第三接触点，再传输至第二接触点。可理解，电子设备可以通过相接触的第一接触点和第四接触点传输电源信号和按键位置信息，并通过第一低通滤波器和第四低通滤波器来将电源信号分离出来，以及通过第一高通滤波器和第四高通滤波器来将按键位置信息分离出来。类似的，电子设备可以通过相接触的第二接触点和第三接触点传输GND信号和按键位置信息，并通过第二低通滤波器和第三低通滤波器来将GND信号分离出来，以及通过第二高通滤波器和第三高通滤波器来将按键位置信息分离出来。
上述方法无需在电子设备和键盘中内置蓝牙芯片，降低了器件成本，比蓝牙传输等无线传输方式更稳定。与低通滤波器和高通滤波器相比，接触点的体积较大，会占据电路板上较大空间，并且，电子设备上的接触点与键盘上的接触点是相对应的，也就是说，电子设备上的接触点的位置确定之后，键盘上的接触点的位置会受到相应限制，无法将接触点部署在键盘上的任意位置。这也就意味着，电子设备和键盘上的接触点数量越多，布局设计越复杂度。而上述方法使用了更少的接触点来实现电子设备和键盘之间的通信，降低了电子设备和键盘的接触点的布局设计的复杂度。另外，由于接触点裸露在电子设备和键盘外，存在一些脏污问题，而上述方法使用更少的接触点也缓解了脏污问题，减少了用户清理接触点的负担。
可理解，电源信号传输至键盘上的第四接触点之后，可以继续通过第四低通滤波器传输至键盘的处理器。GND信号传输至键盘上的第三接触点之后，可以继续通过第三低通滤波器传输至键盘的处理器。
可理解，按键位置信息传输至电子设备上的第一接触点之后，可以继续通过第一低通滤波器传输至电子设备的处理器中。类似的，按键位置信息传输至电子设备上的第二接触点之后，可以继续通过第二低通滤波器传输至电子设备的处理器中。可理解，电子设备中的处理器会对按键位置信息进行处理，从而得到用户按下的按键所表示的内容，即用户的输入内容，并将该输入内容传输至显示屏进行显示。
可理解，电子设备可以为后文所提及的电子设备100，键盘可以为后文所提及的键盘200。
可理解，第一接触点可以为后文所提及的接触点1，第二接触点可以为后文所提及的 接触点2，第三接触点可以为后文所提及的接触点3，第四接触点可以为后文所提及的接触点4。第一低通滤波器可以为后文所提及的低通滤波器1，第二低通滤波器可以为后文所提及的低通滤波器2。第一高通滤波器可以为后文所提及的高通滤波器1，第二高通滤波器可以为后文所提及的高通滤波器2。
在本申请的一些实施例中，第一接触点可以为接触点101，第二接触点可以为接触点102。在本申请的一些实施例中，第一接触点可以为接触点103，第二接触点可以为接触点104。在本申请的一些实施例中，第一接触点可以为接触点105，第二接触点可以为接触点106。在本申请的一些实施例中，第一接触点可以为接触点107，第二接触点可以为接触点108。
在本申请的一些实施例中，第三接触点可以为接触点203，第四接触点可以为接触点204。在本申请的一些实施例中，第三接触点可以为接触点205，第四接触点可以为接触点206。
可理解，按键位置信息用于表示键盘中被按下的按键的位置。也可以理解为，按键位置信息包括键盘中被按下的按键的位置码。
在本申请的一些实施例中，按键位置信息可以包括若干位置码。也就是说，键盘无需在获取一个位置码之后就将其传输给电子设备，而是获取多个位置码之后再将位置码打包发送给电子设备。这种方式可以提高传输效率。
在本申请的一些实施例中，按键位置信息可以为后文所提及的信号1和/或信号2。可理解，在按键位置信息通过第一接触点和第四接触点传输的情况下，按键位置信息可以为后文所提及的信号1。在按键位置信息通过第二接触点和第三接触点传输的情况下，按键位置信息可以为后文所提及的信号2。在按键位置信息通过第一接触点、第二接触点、第三接触点和第四接触点传输的情况下，按键位置信息可以包括后文所提及的信号1和信号2。
结合第一方面，在一种可能的实现方式中，第一低通滤波器包括一个不小于100欧姆的磁珠，第二低通滤波器包括一个不小于100欧姆的磁珠。第一高通滤波器包括至少一个电容和至少一个电感，第二高通滤波器包括至少一个电容和至少一个电感。
在本申请提供的方案中，第一低通滤波器和第二低通滤波器都可以包括一个不小于100欧姆的磁珠，从而区分电源信号、GND信号和其他高频信号。第一高通滤波器可以包括至少一个电容和至少一个电感，第二高通滤波器也可以包括至少一个电容和至少一个电感。该电容和电感的阻值可以基于按键位置信息的频率来确定，可具体参考后文给出的示例。
在本申请的一些实施例中，一个电容和一个电感串联组成第一高通滤波器。示例性的，如图14所示，第一高通滤波器可以由串联的电容C2和电感L3组成。可理解，电容C2和电感L3的参数可以参考后文，还可以根据实际情况另行设置，本申请对此不作限制。类似的，一个电容和一个电感也可以串联组成第二高通滤波器。
结合第一方面，在一种可能的实现方式中，按键位置信息可以为USB信号。
在本申请提供的方案中，按键位置信息可以设计为USB信号。在这种情况下，按键位 置信息的传输可以参考USB通信协议。可理解，在按键位置信息为USB信号的情况下，键盘可以通过第三接触点和第四接触点传输按键位置信息，这种传输方式与部分处理器适配，无需再对电子设备中的处理器进行设计。
在本申请的一些实施例中，在按键信息为USB信号的情况下，第一低通滤波器可以包括一个不小于100欧姆的磁珠，第二低通滤波器可以包括一个不小于100欧姆的磁珠，第一高通滤波器可以包括串联的一个电容和一个电感，第一高通滤波器也可以包括串联的一个电容和一个电感。
在本申请的一些实施例中，键盘也可以仅通过第三接触点或第四接触点传输按键位置信息。
结合第一方面，在一种可能的实现方式中，在电子设备可以接收键盘传输至第一接触点的按键位置信息，还可以通过第一高通滤波器对该传输至第一接触点的按键位置信息进行处理；或者，电子设备可以接收键盘传输至第二接触点的按键位置信息，还可以通过第二高通滤波器对该传输至第二接触点的按键位置信息进行处理；或者，电子设备可以接收键盘传输至第一接触点的按键位置信息，可以通过第一高通滤波器对该传输至第一接触点的按键位置信息进行处理，以及可以接收键盘传输至第二接触点的按键位置信息，还可以通过第二高通滤波器对该传输至第二接触点的按键位置信息进行处理之前，该方法还可以包括：电子设备可以将经过第一高通滤波器处理后的第一信息通过第一接触点发送给键盘；或者，电子设备可以将经过第二高通滤波器处理后的第一信息通过第二接触点发送给键盘。第一信息用于向键盘请求建立通信连接。该方法还可以包括：电子设备可以通过第一接触点接收键盘发送的第二信息，还可以通过第一高通滤波器对第二信息进行处理；或者，电子设备可以通过第二接触点接收第二信息，还可以通过第二高通滤波器对第二信息进行处理。第二信息用于表示键盘与电子设备建立通信连接。
可理解，第二信息用于表示键盘同意与电子设备建立通信连接。
在本申请的一些实施例中，第一信息可以为后文所提及的信号1或信号2。
在本申请的一些实施例中，第二信号可以为后文所提及的信号1或信号2。
在本申请的一些实施例中，第二信号可以为ACK信号。
结合第一方面，在一种可能的实现方式中，按键位置信息可以为I2C信号。
在本申请提供的方案中，在本申请提供的方案中，按键位置信息可以设计为I2C信号。在这种情况下，按键位置信息的传输可以参考I2C通信协议。可理解，在按键位置信息为I2C信号的情况下，键盘可以通过第三接触点和第四接触点传输按键位置信息，这种传输方式与部分处理器适配，无需再对电子设备中的处理器进行设计。
结合第一方面，在一种可能的实现方式中，第一低通滤波器可以包括至少两个电感和至少一个电容，第二低通滤波器可以包括至少两个电感和至少一个电容。第一高通滤波器可以包括至少一个电容和至少一个电感，第二高通滤波器可以包括至少一个电容和至少一个电感。
在本申请的一些实施例中，在按键位置信息为I2C信号的情况下，第一低通滤波器可 以包括两个电感和一个电容，其中，一个电感与一个电容串联，而另一个电感与该电容并联。示例性的，如图13所示，第一低通滤波器可以由并联的电容C1和电感L1，以及与电容C1和电感L1串联的电感L2组成。可理解，电容C1、电感L1和电感L2的参数可以参考后文，还可以根据实际情况另行设置，本申请对此不作限制。类似的，第二低通滤波器可以包括两个电感和一个电容，其中，一个电感与一个电容串联，而另一个电感与该电容并联。
当然，第一低通滤波器和第二低通滤波器包括的电容和电感的数量，以及电容和电感的连接关系不限于上述示例，本申请对此不作限制。
第二方面，本申请提供了一种信号传输方法。该方法可以应用于设置有第三低通滤波器、第四低通滤波器、第三高通滤波器、第四高通滤波器、第三接触点和第四接触点的键盘。第三低通滤波器和第三高通滤波器分别与所述第三接触点相连，第四低通滤波器和第四高通滤波器分别与第四接触点相连。第四接触点用于与电子设备上的第一接触点相接触，第三接触点用于与所述电子设备上的第二接触点相接触。该方法可以包括：键盘可以接收电子设备传输至第四接触点的电源信号，还可以通过第四低通滤波器对电源信号进行处理；键盘可以接收电子设备传输至第三接触点的GND信号，还可以通过第三低通滤波器对GND信号进行处理。该方法还可以包括：键盘可以将经过第三高通滤波器处理后的按键位置信息通过第三接触点传输至电子设备；或者，键盘可以将经过第四高通滤波器处理后的按键位置信息通过第四接触点传输至电子设备；或者，键盘可以将经过第三高通滤波器处理后的按键位置信息通过第三接触点传输至电子设备，以及还可以将经过第四高通滤波器处理后的按键位置信息通过第四接触点传输至电子设备。
上述方法无需在电子设备和键盘中内置蓝牙芯片，降低了器件成本，比蓝牙传输等无线传输方式更稳定，并且，使用了更少的接触点来实现电子设备和键盘之间的通信，降低了电子设备和键盘的接触点的布局设计的复杂度。另外，由于接触点裸露在电子设备和键盘外，存在一些脏污问题，而上述方法使用更少的接触点也缓解了脏污问题，减少了用户清理接触点的负担。
可理解，第三低通滤波器可以为后文所提及的低通滤波器3，第四低通滤波器可以为后文所提及的低通滤波器4。第三高通滤波器可以为后文所提及的高通滤波器3，第四高通滤波器可以为后文所提及的高通滤波器4。
结合第二方面，在一种可能的实现方式中，第三低通滤波器可以包括一个不小于100欧姆的磁珠，第四低通滤波器可以包括一个不小于100欧姆的磁珠。第三高通滤波器可以包括至少一个电容和至少一个电感，第四高通滤波器可以包括至少一个电容和至少一个电感。
结合第二方面，在一种可能的实现方式中，按键位置信息为USB信号。
结合第二方面，在一种可能的实现方式中，在键盘可以将经过第三高通滤波器处理后的按键位置信息通过第三接触点传输至电子设备；或者，键盘可以将经过第四高通滤波器处理后的按键位置信息通过第四接触点传输至电子设备；或者，键盘可以将经过第三高通 滤波器处理后的按键位置信息通过第三接触点传输至电子设备，以及还可以将经过第四高通滤波器处理后的按键位置信息通过第四接触点传输至电子设备之前，该方法还可以包括：键盘可以通过第三接触点接收电子设备发送的第一信息，还可以通过第三高通滤波器对第一信息进行处理；或者，键盘可以通过第四接触点接收第一信息，还可以通过第四高通滤波器对第一信息进行处理。第一信息用于向键盘请求建立通信连接。该方法还可以包括：键盘可以将经过第三高通滤波器处理后的第二信息通过第三接触点发送给电子设备；或者，键盘可以将经过第四高通滤波器处理后的第二信息通过第三接触点发送给电子设备。第二信息用于表示键盘与电子设备建立通信连接。
结合第二方面，在一种可能的实现方式中，按键位置信息可以为I2C信号。
结合第二方面，在一种可能的实现方式中，第三低通滤波器可以包括至少两个电感和至少一个电容，第四低通滤波器可以包括至少两个电感和至少一个电容。第一高通滤波器可以包括至少一个电容和至少一个电感，第二高通滤波器可以包括至少一个电容和至少一个电感。
第三方面，本申请提供了一种电子设备。该电子设备可以包括第一低通滤波器、第二低通滤波器、第一高通滤波器、第二高通滤波器、第一接触点和第二接触点。第一低通滤波器和第一高通滤波器分别与第一接触点相连，第二低通滤波器和第二高通滤波器分别与第二接触点相连。第二接触点可以用于与键盘上的第三接触点相接触。第一接触点可以用于与所述键盘上的第四接触点相接触。第一低通滤波器可以用于将电源信号传输至所述第一接触点。第二低通滤波器可以用于将GND信号传输至第二接触点。第一高通滤波器可以用于对键盘传输至第一接触点的按键位置信息进行处理；或者，第二高通滤波器可以用于对键盘传输至第二接触点的按键位置信息进行处理；或者，第一高通滤波器可以用于对键盘传输至第一接触点的按键位置信息进行处理，并且第二高通滤波器可以用于对键盘传输至第二接触点的按键位置信息进行处理。
结合第三方面，在一种可能的实现方式中，第一低通滤波器包括一个不小于100欧姆的磁珠，第二低通滤波器包括一个不小于100欧姆的磁珠。第一高通滤波器包括至少一个电容和至少一个电感，第二高通滤波器包括至少一个电容和至少一个电感。
结合第三方面，在一种可能的实现方式中，第一低通滤波器可以包括至少两个电感和至少一个电容，第二低通滤波器可以包括至少两个电感和至少一个电容。第一高通滤波器可以包括至少一个电容和至少一个电感，第二高通滤波器可以包括至少一个电容和至少一个电感。
结合第三方面，在一种可能的实现方式中，第一高通滤波器还可以用于将第一信息传输至第一接触点；或者，第二高通滤波器还可以用于将第一信息传输至第二接触点。第一信息用于向键盘请求建立通信连接。第一高通滤波器还可以用于对键盘传输至所述第一接触点的第二信息进行处理；或者，第二高通滤波器还可以用于对键盘传输至第二接触点的第二信息进行处理。第二信息用于表示键盘与电子设备建立通信连接。
第四方面，本申请提供了一种键盘。该键盘可以包括第三低通滤波器、第四低通滤波 器、第三高通滤波器、第四高通滤波器、第三接触点和第四接触点。第三低通滤波器和第三高通滤波器分别与第三接触点相连，第四低通滤波器和第四高通滤波器分别与第四接触点相连。第四接触点可以用于与电子设备上的第一接触点相接触。第三接触点可以用于与电子设备上的第二接触点相接触。第三低通滤波器可以用于对电子设备传输至第三接触点的GND信号进行处理。第四低通滤波器可以用于对电子设备传输至第四接触点的电源信号进行处理。第三高通滤波器可以用于将按键位置信息传输至第三接触点；或者，第四高通滤波器可以用于将按键位置信息传输至第四接触点；或者，第三高通滤波器可以用于将按键位置信息传输至第三接触点，并且第四高通滤波器可以用于将按键位置信息传输至第四接触点。
结合第四方面，在一种可能的实现方式中，第三低通滤波器可以包括一个不小于100欧姆的磁珠，第四低通滤波器可以包括一个不小于100欧姆的磁珠。第三高通滤波器可以包括至少一个电容和至少一个电感，第四高通滤波器可以包括至少一个电容和至少一个电感。
结合第四方面，在一种可能的实现方式中，第三低通滤波器可以包括至少两个电感和至少一个电容，第四低通滤波器可以包括至少两个电感和至少一个电容。第一高通滤波器可以包括至少一个电容和至少一个电感，第二高通滤波器可以包括至少一个电容和至少一个电感。
结合第四方面，在一种可能的实现方式中，第三高通滤波器还可以用于对电子设备传输至第三接触点的第一信息进行处理；或者，第四高通滤波器还可以用于对电子设备传输至第四接触点的第一信息进行处理。第一信息可以用于向键盘请求建立通信连接。第三高通滤波器还可以用于将第二信息传输至第三接触点；或者，第四高通滤波器还可以用于将第二信息传输至第四接触点。第二信息用于表示键盘与电子设备建立通信连接。
第五方面，本申请提供一种计算机存储介质，包括计算机指令，当该计算机指令在电子设备上运行时，使得该电子设备执行上述第一方面中任一种可能的实现方式。
第六方面，本申请提供一种计算机存储介质，包括计算机指令，当该计算机指令在键盘上运行时，使得该键盘执行上述第二方面中任一种可能的实现方式。
第七方面，本申请实施例提供一种芯片，该芯片可以应用于电子设备，该芯片包括一个或多个处理器，该处理器用于调用计算机指令以使得该电子设备执行上述第一方面中任一种可能的实现方式。
第八方面，本申请实施例提供一种芯片，该芯片可以应用于键盘，该芯片包括一个或多个处理器，该处理器用于调用计算机指令以使得该键盘执行上述第二方面中任一种可能的实现方式。
可理解，上述第三方面提供的电子设备、第五方面提供的计算机存储介质和第七方面提供的芯片均用于执行上述第一方面中任一种可能的实现方式。因此，其所能达到的有益效果可参考上述第一方面中任一种可能的实现方式的有益效果，此处不再赘述。需要说明的是，上述第二方面中任一种可能的实现方式的有益效果可参考上述第一方面中任一种可能的实现方式的有益效果。相应的，上述第四方面提供的键盘、第六方面提供的计算机存 储介质和第八方面提供的芯片均用于执行上述第二方面中任一种可能的实现方式。因此，其所能达到的有益效果也可以参考上述第一方面中任一种可能的实现方式的有益效果，此处不再赘述。
附图说明
图1为本申请实施例提供的一种信号传输场景的示意图；
图2A为本申请实施例提供的一种电子设备100的正视图；
图2B为本申请实施例提供的一种电子设备100的后视图；
图3A为本申请实施例提供的又一种电子设备100的正视图；
图3B为本申请实施例提供的又一种电子设备100的后视图；
图4为本申请实施例提供的一种键盘200的结构示意图；
图5为本申请实施例提供的一种电子设备100和键盘200的连接示意图；
图6为本申请实施例提供的又一种电子设备100和键盘200的连接示意图；
图7为本申请实施例提供的一种电子设备100的结构示意图；
图8为本申请实施例提供的又一种电子设备100的结构示意图；
图9为本申请实施例提供的又一种键盘200的结构示意图；
图10为本申请实施例提供的又一种电子设备100和键盘200的连接示意图；
图11为本申请实施例提供的又一种电子设备100和键盘200的连接示意图；
图12为本申请实施例提供的一种电子设备100的硬件结构示意图；
图13为本申请实施例提供的一种低通滤波器1的结构示意图；
图14为本申请实施例提供的一种高通滤波器1的结构示意图；
图15为本申请实施例提供的一种键盘200的硬件结构示意图；
图16为本申请实施例提供的又一种电子设备100和键盘200的连接示意图；
图17为本申请实施例提供的一种信号传输过程的示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。其中，在本申请实施例的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；文本中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，另外，在本申请实施例的描述中，“多个”是指两个或多于两个。
应当理解，本申请的说明书和权利要求书及附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、***、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包 含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本申请所描述的实施例可以与其它实施例相结合。
目前，用户在使用一些终端设备(例如，平板电脑等)时有使用外接键盘进行输入的需求。
在一种可能的实现方式中，在平板电脑和键盘内置无线通讯芯片的情况下，平板电脑与键盘之间可以通过无线连接方式进行通信，即通过无线传输方式来进行信号传输。这种信号传输方式成本高、功耗大，并且可能出现连接不稳定导致信号传输不稳定的情况。
在一种可能的实现方式中，在平板电脑上的接触点与键盘上的接触点处于接触状态的情况下，平板电脑与键盘之间可以通过有线连接方式进行通信，即通过有线传输方式来进行信号传输。具体地，在该有线连接方式中，平板电脑上的接触点至少有3个，这3个接触点可以分别理解为供电端、接地端和通信端。其中，供电端用于传输电源信号，接地端用于传输GND信号，通信端用于传输平板电脑和键盘之间的通信数据。可理解，相应的，键盘上的接触点也至少有3个。平板电脑上的接触点分别与键盘上的接触点相接触来实现对键盘的供电及通信。这种信号传输方式所需的接触点较多(一个设备至少需要3个接触点)，并且，平板电脑和键盘上的接触点的数量越多，设计越困难。另外，由于这种信号传输方式依赖平板电脑和键盘上的接触点，所以需要保证平板电脑和键盘上的接触点接触良好，从而保证平板电脑和键盘的连接是良好的。但是，由于平板电脑和键盘上的接触点是外露的，接触点数量越多，越容易出现脏污、磨损等问题，越不利于平板电脑和键盘的连接。
本申请提供了一种信号传输方法及相关设备。根据该信号传输方法，在电子设备100上的2个接触点分别与键盘200上的2个接触点相接触的情况下，电子设备100可以将电源信号和GND信号通过该相接触的接触点传输给键盘200。即电子设备100可以向键盘200供电。并且，在用户按下键盘200上的按键来进行输入的情况下，键盘200可以将按键位置信息通过该相接触的接触点传输给电子设备100。这种信号传输方式无需在电子设备100和键盘200中内置蓝牙芯片，降低了器件成本。另外，这种信号传输方式为有线传输方式，比蓝牙传输更稳定，而且还使用了更少的接触点，降低了电子设备和键盘的接触点的布局设计的复杂度。
请参阅图1，图1为本申请实施例提供的一种信号传输场景的示意图。
如图1所示，电子设备100与键盘200之间建立有通信连接。电子设备100和键盘200之间可以进行信号传输。具体地，电子设备100可以包括2个接触点，相应的，键盘200也可以包括2个接触点。电子设备100上的2个接触点分别与键盘200上的2个接触点相接触，电子设备100和键盘200可以通过这些相接触的接触点传输信号。其中，电子设备100可以包括手机、平板电脑等电子设备，本申请对电子设备100的具体类型不作限制。
在本申请的一些实施例中，电子设备100包括的2个接触点在电子设备100的背面。 在本申请中，用户使用电子设备100时，电子设备100朝向用户的面为正面，电子设备100背向用户的面为背面。可理解，电子设备100中显示屏所在的面为电子设备100的正面，电子设备100中背向显示屏的面为电子设备100的背面。还可以理解，在电子设备100包括前置摄像头和后置摄像头的情况下，电子设备100中前置摄像头所在的面为电子设备100的正面，电子设备100中后置摄像头所在的面为电子设备100的背面。
示例性的，电子设备100可以为手机。图2A为本申请实施例提供的一种电子设备100的正视图，图2B为本申请实施例提供的一种电子设备100的后视图，如图2A和图2B所示，该手机的背面设置有2个接触点，即接触点101和接触点102。也就是说，电子设备100的背面设置有接触点101和接触点102。
示例性的，电子设备100可以为平板电脑。图3A为本申请实施例提供的又一种电子设备100的正视图，图3B为本申请实施例提供的又一种电子设备100的后视图，如图3A和图3B所示，该平板电脑的背面设置有2个接触点，即接触点103和接触点104。也就是说，电子设备100的背面设置有接触点103和接触点104。
在本申请的一些实施例中，如图4所示，键盘200可以包括按键部201和固定部202。固定部202可以扣合于按键部201上。其中，按键部201可以包括若干按键，还可以包括触控板。固定部202用于支撑和固定电子设备100。按键部201具有第一表面2011，固定部202具有第二表面2021。在固定部202扣合于按键部201上的情况下，第一表面2011和第二表面2021相对设置。固定部202的第二表面2021上设置有接触点203和接触点204。如图4所示的空间直角坐标系O-xyz，该坐标系中的x轴方向为按键部201的宽度方向，y轴方向为按键部201的长度方向，z轴方向为按键部201的厚度方向。可理解，第一表面2011与xOy面平行。
在本申请的一些实施例中，键盘200还可以包括连接部。固定部202可以通过连接部连接于按键部201上。在一种可能的实现方式中，连接部可以为转动部件。例如，连接部可以为阻尼转轴。在这种情况下，固定部202可以通过连接部转动连接于按键部201上。在固定部202基于连接部转动时，第二表面2021与第一表面2011的夹角相应变化。根据如图4所示的空间直角坐标系O-xyz，该坐标系的y轴方向平行于连接部的转动轴线。
基于上述内容，在用户同时使用电子设备100和键盘200的情况下，电子设备100可以安装于键盘200上。具体地，电子设备100可以安装于固定部202的第二表面2021上。在本申请的一些实施例中，如图5所示，电子设备100背面的接触点101可以与第二表面2021上的接触点204相接触，电子设备100背面的接触点102可以与第二表面2021上的接触点203相接触。在本申请的又一些实施例中，如图6所示，电子设备100背面的接触点104可以与第二表面2021上的接触点203相接触，电子设备100背面的接触点103可以与第二表面2021上的接触点204相接触。
在本申请的一些实施例中，电子设备100包括的2个接触点在电子设备100的侧面。也可以理解为，电子设备100包括的2个接触点在电子设备100的侧边上。在本申请中，用户使用电子设备100时，电子设备100未朝向用户且未背向用户的面为侧面。
示例性的，电子设备100可以为手机。如图7所示，该手机中充电口所在的侧边上设置有2个接触点，即接触点105和接触点106。也就是说，电子设备100的侧边上设置有接触点105和接触点106。
示例性的，电子设备100可以为平板电脑。如图8所示，该手机中充电口所在的侧边上设置有2个接触点，即接触点107和接触点108。也就是说，电子设备100的侧边上设置有接触点107和接触点108。
在本申请的一些实施例中，如图9所示，键盘200可以包括按键部201和固定部202。按键部201具有第一表面2011，固定部202具有第二表面2021。按键部201的第一表面2011上设置有接触点205和接触点206。可理解，键盘200还可以包括连接部。按键部201、固定部202和连接部的相关描述可以参考上文，在此不再赘述。
基于上述内容，在用户同时使用电子设备100和键盘200的情况下，电子设备100可以安装于键盘200上。具体地，电子设备100可以安装于固定部202的第二表面2021上。在本申请的一些实施例中，如图10所示，电子设备侧边的接触点105可以与第一表面2011上的接触点206相接触，电子设备侧边的接触点106可以与第一表面2011上的接触点205相接触。在本申请的又一些实施例中，如图11所示，电子设备侧边的接触点107可以与第一表面2011上的接触点206相接触，电子设备侧边的接触点108可以与第一表面2011上的接触点205相接触。
在本申请的一些实施例中，电子设备100上的2个接触点和键盘200上的2个接触点为Pogo pin。可理解，Pogo pin是一种应用于手机等电子产品中的精密连接器，广泛应用于半导体设备中，起连接作用。Pogo pin的相关描述可以参考相关技术文档，在此不展开说明。
在一种可能的实现方式中，电子设备100上的2个接触点均为pin头，键盘200上的2个接触点均为pin针。pin头可以理解为金属贴片。pin针可以理解为金属弹簧针。pin头与pin针相接触之后，pin针可以收缩以便于更好的嵌合和连接。
例如，电子设备100背面的接触点101和接触点102可以为pin头，键盘200的固定部202的第二表面2021上的接触点203和接触点204可以为pin针。例如，电子设备100的背面的接触点103和接触点104可以为pin头，键盘200的固定部202的第二表面2021上的接触点203和接触点204可以为pin针。例如，电子设备100侧边的接触点105和接触点106可以为pin头，键盘200的按键部201的第一表面2011上的接触点205和接触点206可以为pin针。例如，电子设备100侧边的接触点107和接触点108可以为pin头，键盘200的按键部201的第一表面2011上的接触点205和接触点206可以为pin针。
在一种可能的实现方式中，电子设备100上的2个接触点均为pin针，键盘200上的2个接触点均为pin头。
在一种可能的实现方式中，电子设备100上的2个接触点分别为pin针和pin头，键盘200上的2个接触点分别为pin针和pin头。电子设备100上的pin针与键盘200上的pin头相接触，电子设备100上的pin头与键盘200上的pin针相接触。
需要说明的是，电子设备100上的2个接触点的位置不限于上述示例，键盘200上的2个接触点的位置不限于上述示例。
下面介绍本申请实施例提供的装置。
请参阅图12，图12为本申请实施例提供的一种电子设备100的硬件结构示意图。
电子设备100可以包括处理器、存储器、显示屏、电池、低通滤波器1、低通滤波器2、高通滤波器1、高通滤波器2和外壳。其中，外壳上设置有接触点1和接触点2。
其中，处理器可以包括一个或多个处理单元。例如：处理器可以包括应用处理器(Application Processor，AP)，调制解调处理器，图形处理器(Graphics Processing unit，GPU)，图像信号处理器(即ISP)，控制器，存储器，视频编解码器，数字信号处理器(Digital Signal Processor，DSP)，基带处理器，和/或神经网络处理器(Neural-network Processing Unit，NPU)等。其中，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器中。
在本申请的一些实施例中，处理器可以包括一个或多个接口。例如，USB接口。USB接口是符合USB标准规范的接口，具体可以是Mini USB接口，Micro USB接口，USB Type C接口等。可理解，USB的英文全称为Universal Serial Bus，中文意思为通用串行总线，是一个外部总线标准，用于规范电脑与外部设备的连接和通讯。处理器所包括的接口还可以用于连接其他电子设备，例如AR设备等。
在本申请提供的实施例中，电子设备100中的处理器可以对接收的按键位置信息进行处理，得到相应的编码信息。例如，ASCII码。
可理解，ASCII的英文全称为American Standard Code for Information Interchange，中文意思为美国信息交换标准代码。ASCII是基于拉丁字母的一套电脑编码***。ASCII码使用指定的7位或8位二进制数组合来表示128或256种可能的字符。标准ASCII码也叫基础ASCII码，使用7位二进制数(剩下的1位二进制为0)来表示所有的大写和小写字母、数字0到9、标点符号，以及在美式英语中使用的特殊控制字符。
显示屏用于显示图像，视频等。显示屏包括显示面板。显示面板可以采用液晶显示屏(Liquid Crystal Display，LCD)，有机发光二极管(Organic Light-Emitting Diode，OLED)，有源矩阵有机发光二极体或主动矩阵有机发光二极体(Active-Matrix Organic Light Emitting Diode的，AMOLED)，柔性发光二极管(Flex Light-Emitting Diode，FLED)，Mini LED，Micro LED，Micro-OLED，量子点发光二极管(Quantum Dot Light Emitting Diodes，QLED)等。在一些实施例中，电子设备100可以包括1个或N个显示屏，N为大于1的正整数。
在本申请提供的实施例中，电子设备100可以在显示屏上显示用户通过键盘200输入的内容。
电池用于给电子设备100供电。可理解，电子设备100中的电池可以为锂电池。在本申请的一些实施例中，电子设备100还可以包括充电管理模块和电源管理模型。充电管理模块用于从充电器接收充电输入。充电管理模块为电池充电的同时，还可以通过电源管理模块为电子设备100供电。
在本申请提供的实施例中，电子设备100中的电池还可以给键盘200供电。具体的， 电子设备100中的电池传输电源信号和GND信号至键盘200，从而实现对键盘200的供电。
可理解，低通滤波器是容许低于截止频率的信号通过，但高于截止频率的信号不能通过的电子滤波装置。也就是说，低通滤波器1和低通滤波器2用于滤除高频信号。在本申请提供的实施例中，低通滤波器1可以允许电源信号通过，低通滤波器2可以允许GND信号通过。
在本申请的一些实施例中，低通滤波器1和低通滤波器2可以为磁珠。磁珠具有较高的电阻率和磁导率，可以等效于电阻和电感串联，但电阻值和电感值都随频率变化，磁珠在高频时呈现阻性，并且能够在较宽的频率范围内保持较高的阻抗，因此通过选用合适参数的磁珠可以有效地滤除频率较高的信号而使得频率较低的电源信号/GND信号通过。可理解，低通滤波器1和低通滤波器2对应的磁珠的参数可以根据实际需求进行设置，本申请对此不作限制。例如，低通滤波器1和低通滤波器2对应的磁珠的阻值可以不小于100欧姆。示例性的，低通滤波器1可以为100欧姆的磁珠。示例性的，低通滤波器2可以为150欧姆的磁珠。再例如，低通滤波器1和低通滤波器2对应的磁珠的阻值可以不小于100欧姆，且不大于500欧姆。
在本申请的一些实施例中，低通滤波器1可以由电容和电感组成。如图13所示，低通滤波器1可以由并联的电容C1和电感L1，以及与电容C1和电感L1串联的电感L2组成。其中，电容C1为10纳法，电感L1为150微亨，电感L2为100微亨。类似的，低通滤波器2也可以由电容和电感组成。低通滤波器2的结构可以参考低通滤波器1的结构(如图13所示)。
在本申请的一些实施例中，高通滤波器1可以由电容和电感组成。如图14所示，高通滤波器1可以由串联的电容C2和电感L3组成。其中，电容C2为1纳法，电感L3为100纳亨。在这种情况下，3MHz-70MHz范围内的信号通过高通滤波器1几乎不衰减。而其他频段的信号则会被高通滤波器1阻断。需要说明的是，高通滤波器1还可以为其他结构，本申请对此不作限制。例如，高通滤波器1还可以包括更多的电容和/或电感。再例如，高通滤波器1包括的电容和/或电感的参数可以发生变化。类似的，高通滤波器2也可以由电容和电感组成。高通滤波器2的结构可以参考高通滤波器1的结构(如图14所示)。
电子设备100的外壳上设置有接触点1和接触点2。接触点1分别与低通滤波器1和高通滤波器1相连接。接触点2分别与低通滤波器2和高通滤波器2相连接。
可理解，接触点1和接触点2为用户可见的接触点，实际上，接触点1和接触点2仅为连接器的一部分，连接器的大部分都在电子设备100内部，是用户不可见的。可理解，连接器起连接作用，连接器可以为上文所提及的Pogo pin。
结合上文，在本申请的一些实施例中，接触点1可以为接触点101，接触点2可以为接触点102。在本申请的一些实施例中，接触点1可以为接触点103，接触点2可以为接触点104。在本申请的一些实施例中，接触点1可以为接触点105，接触点2可以为接触点106。在本申请的一些实施例中，接触点1可以为接触点107，接触点2可以为接触点108。
可以理解的是，本发明实施例示意的结构并不构成对电子设备100的具体限定。在本申请另一些实施例中，电子设备100可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬 件的组合实现。
请参阅图15，图15为本申请实施例提供的一种键盘200的硬件结构示意图。
键盘200可以包括处理器、按键、低通滤波器3、低通滤波器4、高通滤波器3、高通滤波器4和外壳。其中，外壳上设置有接触点3和接触点4。
键盘200中的处理器可以参考上文电子设备100中的处理器的相关描述，本申请在此不再赘述。
在本申请提供的实施例中，键盘200中的处理器可以接收电子设备100传输的电源信号和GND信号。键盘200中的处理器还可以传输按键位置信息至电子设备100。
在本申请的一些实施例中，键盘200中的处理器可以设置于键盘200中的电路板上。键盘200的电路板上还可以设置有逻辑电路和控制电路。逻辑电路可以包括若干按键开关。每一个按键都可以连接有一个按键开关。按键开关用于确定相应按键是否按下。控制电路用于识别按下的按键并获取该按键对应的位置码。控制电路可以包括按键识别扫描电路、编码电路和接口电路等。按键识别扫描电路、编码电路和接口电路的描述可以参考相关技术文档，在此不展开说明。
键盘200的外壳上设置有接触点3和接触点4。接触点3与低通滤波器3和高通滤波器3相连接。接触点4与低通滤波器4和高通滤波器4相连接。
可理解，低通滤波器3的结构可以参考低通滤波器2的结构。低通滤波器4的结构可以参考低通滤波器1的结构。高通滤波器3的结构可以参考高通滤波器2的结构。高通滤波器4的结构可以参考高通滤波器1的结构。
可理解，接触点3和接触点4为用户可见的接触点，实际上，接触点3和接触点4仅为连接器的一部分，连接器的大部分都在键盘200内部，是用户不可见的。可理解，连接器起连接作用，连接器可以为上文所提及的Pogo pin。
结合上文，在本申请的一些实施例中，接触点3可以为接触点203，接触点4可以为接触点204。在本申请的一些实施例中，接触点3可以为接触点205，接触点4可以为接触点206。
可以理解的是，本发明实施例示意的结构并不构成对键盘200的具体限定。在本申请另一些实施例中，键盘200可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
下面介绍本申请实施例提供的一种信号传输方法。
基于上述内容，在电子设备100上的2个接触点分别与键盘200上的2个接触点相接触的情况下，电子设备100将电源信号和GND信号通过该相接触的接触点传输给键盘200，并且，键盘200将按键位置信息通过该相接触的接触点传输给电子设备100。如图16所示，电子设备100包括接触点1和接触点2，键盘200包括接触点3和接触点4。电子设备100上的接触点1可以与键盘200上的接触点4相接触，电子设备100上的接触点2可以与键盘200上的接触点3相接触。在这种情况下，电子设备100可以通过接触点1和接触点4 将电源信号传输给键盘200，还可以通过接触点2和接触点3将GND信号传输给键盘200。键盘200可以通过接触点4和接触点1将按键位置信息传输给电子设备100，还可以通过接触点3和接触点2将按键位置信息传输给电子设备100。
在本申请的一些实施例中，在键盘200将按键位置信息传输给电子设备100之前，电子设备100可以向键盘200发送信息以请求与键盘200进行通信。键盘200接收该信息之后，可以向电子设备100发送ACK信号。键盘200发送该ACK信号之后，可以将按键位置信息发送给电子设备100。
可理解，按键位置信息可以包括位置码。位置码可以用于表示按键的位置。在本申请的一些实施例中，键盘200通过按键识别扫描电路和编码电路来确定用户按下的按键的位置，并获取该按下的按键的位置码。ACK(Acknowledge character)即是确认字符，在数据通信中，接收站发给发送站的一种传输类控制字符。ACK表示发来的数据已确认接收无误。在TCP/IP协议中，如果接收方成功的接收到数据，那么会回复一个ACK数据。在本申请中，ACK信号用于表示键盘200与电子设备100建立通信连接。
具体地，电子设备100中可以设置有2个低通滤波器和2个高通滤波器，即低通滤波器1、低通滤波器2、高通滤波器1和高通滤波器2。其中，低通滤波器1和高通滤波器1可以分别与接触点1相连，高通滤波器2和低通滤波器2可以分别与接触点2相连。键盘200中可以设置有2个低通滤波器和2个高通滤波器，即低通滤波器3、低通滤波器4、高通滤波器3和高通滤波器4。其中，低通滤波器3和高通滤波器3可以分别与接触点3相连，低通滤波器4和高通滤波器4可以分别与接触点4相连。
可理解，电子设备100中的电源信号经过低通滤波器1之后，可以通过接触点1和接触点4传输至键盘200。电子设备100中的GND信号经过低通滤波器2之后，可以通过接触点2和接触点3传输至键盘200。键盘200接收通过接触点4传输的信号之后，可以将该信号经过低通滤波器4，从而得到电源信号。类似的，键盘200接收通过接触点3传输的信号之后，可以将该信号经过低通滤波器3，从而得到GND信号。
键盘200中的按键位置信息经过高通滤波器4之后，可以通过接触点4和接触点1传输至电子设备100。键盘200中的按键位置信息还可以经过高通滤波器3之后，再通过接触点3和接触点2传输至电子设备100。电子设备100接收通过接触点1传输的信号之后，可以将该信号经过高通滤波器1，从而得到按键位置信息。类似的，电子设备100接收通过接触点2传输的信号之后，可以将该信号经过高通滤波器2，从而得到按键位置信息。
下面结合图17对上述信号传输过程进一步介绍。
在电子设备100上的2个接触点分别与键盘200上的2个接触点相接触的情况下，电子设备100可以给键盘200供电。如图17所示，电子设备100中的电源信号从电池传输至低通滤波器1，再经由接触点1传输至键盘200上的接触点4，最后经由低通滤波器4传输至键盘200的处理器。类似的，电子设备100中的GND信号从电池传输至低通滤波器2，再经由接触点2传输至键盘200上的接触点3，最后经由低通滤波器3传输至键盘200的处理器。可理解，电源信号和GND信号均为低频信号。示例性的，电源信号和GND信号的频率可以在1Hz-100Hz范围内。
需要说明的是，电子设备100和键盘200还可以传输高频信号。图17所示的信号1和信号2即为高频信号。
在电子设备100给键盘200供电的情况下，用户可以通过敲击键盘200上的按键进行输入，由于键盘200的按键和其对应的逻辑电路排列成矩阵形状，键盘200可以通过按键识别扫描电路来确定用户按下的按键的位置，从而得到用户按下的按键的位置信息。键盘200可以将该按键位置信息传输给电子设备100。如图17所示，信号1可以包括按键位置信息，信号2也可以包括按键位置信息。键盘200可以将信号1传输至高通滤波器4，再经由接触点4传输至电子设备100上的接触点1，最后经由高通滤波器1传输至电子设备100的处理器。类似的，键盘200可以将信号2传输至高通滤波器3，再经由接触点3传输至电子设备100上的接触点2，最后经由高通滤波器2传输至电子设备100的处理器。
在本申请的一些实施例中，信号1和信号2为位置码打包后的信号。也就是说，信号1和信号2中包含多个位置码。在本申请的一些实施例中，信号1和信号2为USB信号。在本申请的一些实施例中，信号1和信号2为I2C信号。可理解，USB信号的相关描述可以参考USB通信协议和相关标准。I2C的英文全称为Inter-Integrated Circuit，字面意思是集成电路之间。I2C信号的相关描述可以参考I2C通信协议和相关标准。示例性的，信号1和信号2为USB信号时，信号1和信号2的频率为12MHz。示例性的，信号1和信号2为I2C信号时，信号1和信号2的频率可以为100KHz。示例性的，信号1和信号2为I2C信号时，信号1和信号2的频率还可以为400KHz。示例性的，信号1和信号2为I2C信号时，信号1和信号2的频率还可以为1M Hz。
在本申请的一些实施例中，在信号1为USB信号的情况下，低通滤波器1、低通滤波器2、低通滤波器3和低通滤波器4均可以由不小于100欧姆的磁珠组成，具体可以参考上文对低通滤波器1的描述，在此不再赘述。类似的，在信号2为USB信号的情况下，低通滤波器1、低通滤波器2、低通滤波器3和低通滤波器4均可以由不小于100欧姆的磁珠组成，具体可以参考上文对低通滤波器1的描述，在此不再赘述。
在本申请的一些实施例中，在信号1为I2C信号的情况下，低通滤波器1、低通滤波器2、低通滤波器3和低通滤波器4均可以由电容和电感组成，具体可以参考上文对低通滤波器1和图13的描述，在此不再赘述。类似的，在信号2为I2C的情况下，低通滤波器1、低通滤波器2、低通滤波器3和低通滤波器4均可以由电容和电感组成，具体可以参考上文对低通滤波器1和图13的描述，在此不再赘述。
在本申请的一些实施例中，键盘200可以通过向电子设备100发送信号1或信号2，来将按键位置信息传输给电子设备100。在本申请的一些实施例中，键盘200可以向电子设备100发送信号1和信号2，来将按键位置信息传输给电子设备100。
可理解，电子设备100接收键盘200发送的按键位置信息后，可以通过处理器对该按键位置信息进行处理，从而确定输入内容。输入内容可以理解为用户按下的按键所表示的字符。
在本申请的一些实施例中，在电子设备100上的2个接触点分别与键盘200上的2个接触点相接触的情况下，电子设备100可以向键盘200发送通信请求。在这种情况下，信号1和信号2可以为电子设备100向键盘200发送的通信请求。如图17所示，电子设备 100可以将信号1传输至高通滤波器1，再经由接触点1传输至键盘200上的接触点4，最后经由高通滤波器4传输至键盘200的处理器。类似的，电子设备100可以将信号2传输至高通滤波器2，再经由接触点2传输至键盘200上的接触点3，最后经由高通滤波器3传输至键盘200的处理器。
在本申请的一些实施例中，电子设备100可以向键盘200发送信号1以请求通信。在本申请的又一些实施例中，电子设备100可以向键盘200发送信号2以请求通信。
在本申请的一些实施例中，键盘200接收电子设备100发送的通信请求之后，可以向电子设备100发送ACK信号。如图17所示，信号1和信号2可以为ACK信号。可理解，键盘200可以向电子设备100发送信号1以同意通信，并建立通信连接。键盘200还可以向电子设备100发送信号2以同意通信，并建立通信连接。
可理解，键盘200还可以向电子设备100发送其他类型的信号以同意建立与电子设备100之间的通信连接，本申请对此不作限制。
以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (27)

  1. 一种信号传输方法，其特征在于，应用于设置有第一低通滤波器、第二低通滤波器、第一高通滤波器、第二高通滤波器、第一接触点和第二接触点的电子设备；所述第一低通滤波器和所述第一高通滤波器分别与所述第一接触点相连；所述第二低通滤波器和所述第二高通滤波器分别与所述第二接触点相连；所述第二接触点用于与键盘上的第三接触点相接触，所述第一接触点用于与所述键盘上的第四接触点相接触；所述方法包括：
    所述电子设备将电源信号通过所述第一低通滤波器传输至所述第一接触点，将GND信号通过所述第二低通滤波器传输至所述第二接触点；
    所述电子设备接收所述键盘传输至所述第一接触点的按键位置信息，通过所述第一高通滤波器对所述传输至所述第一接触点的按键位置信息进行处理；或者，所述电子设备接收所述键盘传输至所述第二接触点的按键位置信息，通过所述第二高通滤波器对所述传输至所述第二接触点的按键位置信息进行处理；或者，所述电子设备接收所述键盘传输至所述第一接触点的按键位置信息，通过所述第一高通滤波器对所述传输至所述第一接触点的按键位置信息进行处理，以及接收所述键盘传输至所述第二接触点的按键位置信息，通过所述第二高通滤波器对所述传输至所述第二接触点的按键位置信息进行处理。
  2. 如权利要求1所述的方法，其特征在于，所述第一低通滤波器包括一个不小于100欧姆的磁珠；所述第二低通滤波器包括一个不小于100欧姆的磁珠；所述第一高通滤波器包括至少一个电容和至少一个电感；所述第二高通滤波器包括至少一个电容和至少一个电感。
  3. 如权利要求1或2所述的方法，其特征在于，所述按键位置信息为USB信号。
  4. 如权利要求1所述的方法，其特征在于，在所述电子设备接收所述键盘传输至所述第一接触点的按键位置信息，通过所述第一高通滤波器对所述传输至所述第一接触点的按键位置信息进行处理；或者，所述电子设备接收所述键盘传输至所述第二接触点的按键位置信息，通过所述第二高通滤波器对所述传输至所述第二接触点的按键位置信息进行处理；或者，所述电子设备接收所述键盘传输至所述第一接触点的按键位置信息，通过所述第一高通滤波器对所述传输至所述第一接触点的按键位置信息进行处理，以及接收所述键盘传输至所述第二接触点的按键位置信息，通过所述第二高通滤波器对所述传输至所述第二接触点的按键位置信息进行处理之前，所述方法包括：
    所述电子设备将经过所述第一高通滤波器处理后的第一信息通过所述第一接触点发送给所述键盘；或者，所述电子设备将经过所述第二高通滤波器处理后的第一信息通过所述第二接触点发送给所述键盘；所述第一信息用于向所述键盘请求建立通信连接；
    所述电子设备通过所述第一接触点接收所述键盘发送的第二信息，通过所述第一高通滤波器对所述第二信息进行处理；或者，所述电子设备通过所述第二接触点接收所述第二信息，通过所述第二高通滤波器对所述第二信息进行处理；所述第二信息用于表示所述键盘与所述电子设备建立通信连接。
  5. 如权利要求4所述的方法，其特征在于，所述按键位置信息为I2C信号。
  6. 如权利要求5所述的方法，其特征在于，所述第一低通滤波器包括至少两个电感和 至少一个电容；所述第二低通滤波器包括至少两个电感和至少一个电容；所述第一高通滤波器包括至少一个电容和至少一个电感；所述第二高通滤波器包括至少一个电容和至少一个电感。
  7. 一种信号传输方法，其特征在于，应用于设置有第三低通滤波器、第四低通滤波器、第三高通滤波器、第四高通滤波器、第三接触点和第四接触点的键盘；所述第三低通滤波器和所述第三高通滤波器分别与所述第三接触点相连；所述第四低通滤波器和所述第四高通滤波器分别与所述第四接触点相连；所述第四接触点用于与电子设备上的第一接触点相接触；所述第三接触点用于与所述电子设备上的第二接触点相接触；所述方法包括：
    所述键盘接收所述电子设备传输至所述第四接触点的电源信号，通过所述第四低通滤波器对所述电源信号进行处理；
    所述键盘接收所述电子设备传输至所述第三接触点的GND信号，通过所述第三低通滤波器对所述GND信号进行处理；
    所述键盘将经过所述第三高通滤波器处理后的按键位置信息通过所述第三接触点传输至所述电子设备；或者，所述键盘将经过所述第四高通滤波器处理后的按键位置信息通过所述第四接触点传输至所述电子设备；或者，所述键盘将经过所述第三高通滤波器处理后的按键位置信息通过所述第三接触点传输至所述电子设备，以及将经过所述第四高通滤波器处理后的按键位置信息通过所述第四接触点传输至所述电子设备。
  8. 如权利要求7所述的方法，其特征在于，所述第三低通滤波器包括一个不小于100欧姆的磁珠；所述第四低通滤波器包括一个不小于100欧姆的磁珠；所述第三高通滤波器包括至少一个电容和至少一个电感；所述第四高通滤波器包括至少一个电容和至少一个电感。
  9. 如权利要求7或8所述的方法，其特征在于，所述按键位置信息为USB信号。
  10. 如权利要求7或8所述的方法，其特征在于，在所述键盘将经过所述第三高通滤波器处理后的按键位置信息通过所述第三接触点传输至所述电子设备；或者，所述键盘将经过所述第四高通滤波器处理后的按键位置信息通过所述第四接触点传输至所述电子设备；或者，所述键盘将经过所述第三高通滤波器处理后的按键位置信息通过所述第三接触点传输至所述电子设备，以及将经过所述第四高通滤波器处理后的按键位置信息通过所述第四接触点传输至所述电子设备之前，所述方法包括：
    所述键盘通过所述第三接触点接收所述电子设备发送的第一信息，通过所述第三高通滤波器对所述第一信息进行处理；或者，所述键盘通过所述第四接触点接收所述第一信息，通过所述第四高通滤波器对所述第一信息进行处理；所述第一信息用于向所述键盘请求建立通信连接；
    所述键盘将经过所述第三高通滤波器处理后的第二信息通过所述第三接触点发送给所述电子设备；或者，所述键盘将经过所述第四高通滤波器处理后的第二信息通过所述第三接触点发送给所述电子设备；所述第二信息用于表示所述键盘与所述电子设备建立通信连接。
  11. 如权利要求10所述的方法，其特征在于，所述按键位置信息为I2C信号。
  12. 如权利要求11所述的方法，其特征在于，所述第三低通滤波器包括至少两个电感 和至少一个电容；所述第四低通滤波器包括至少两个电感和至少一个电容；所述第三高通滤波器包括至少一个电容和至少一个电感；所述第四高通滤波器包括至少一个电容和至少一个电感。
  13. 一种电子设备，其特征在于，所述电子设备包括第一低通滤波器、第二低通滤波器、第一高通滤波器、第二高通滤波器、第一接触点和第二接触点；所述第一低通滤波器和所述第一高通滤波器分别与所述第一接触点相连；所述第二低通滤波器和所述第二高通滤波器分别与所述第二接触点相连；
    所述第二接触点用于与键盘上的第三接触点相接触；
    所述第一接触点用于与所述键盘上的第四接触点相接触；
    所述第一低通滤波器用于将电源信号传输至所述第一接触点；
    所述第二低通滤波器用于将GND信号传输至所述第二接触点；
    所述第一高通滤波器用于对所述键盘传输至所述第一接触点的按键位置信息进行处理；或者，所述第二高通滤波器用于对所述键盘传输至所述第二接触点的按键位置信息进行处理；或者，所述第一高通滤波器用于对所述键盘传输至所述第一接触点的按键位置信息进行处理，并且所述第二高通滤波器用于对所述键盘传输至所述第二接触点的按键位置信息进行处理。
  14. 如权利要求13所述的电子设备，其特征在于，所述第一低通滤波器包括一个不小于100欧姆的磁珠；所述第二低通滤波器包括一个不小于100欧姆的磁珠；所述第一高通滤波器包括至少一个电容和至少一个电感；所述第二高通滤波器包括至少一个电容和至少一个电感。
  15. 如权利要求13所述的电子设备，其特征在于，所述第一低通滤波器包括至少两个电感和至少一个电容；所述第二低通滤波器包括至少两个电感和至少一个电容；所述第一高通滤波器包括至少一个电容和至少一个电感；所述第二高通滤波器包括至少一个电容和至少一个电感。
  16. 如权利要求13-15任一项所述的电子设备，其特征在于，所述第一高通滤波器还用于将第一信息传输至所述第一接触点；或者，所述第二高通滤波器还用于将所述第一信息传输至所述第二接触点；所述第一信息用于向所述键盘请求建立通信连接；
    所述第一高通滤波器还用于对所述键盘传输至所述第一接触点的第二信息进行处理；或者，所述第二高通滤波器还用于对所述键盘传输至所述第二接触点的第二信息进行处理；所述第二信息用于表示所述键盘与所述电子设备建立通信连接。
  17. 一种键盘，其特征在于，所述键盘包括第三低通滤波器、第四低通滤波器、第三高通滤波器、第四高通滤波器、第三接触点和第四接触点；所述第三低通滤波器和所述第三高通滤波器分别与所述第三接触点相连；所述第四低通滤波器和所述第四高通滤波器分别与所述第四接触点相连；
    所述第四接触点用于与电子设备上的第一接触点相接触；
    所述第三接触点用于与所述电子设备上的第二接触点相接触；
    所述第三低通滤波器用于对所述电子设备传输至所述第三接触点的GND信号进行处理；
    所述第四低通滤波器用于对所述电子设备传输至所述第四接触点的电源信号进行处理；
    所述第三高通滤波器用于将按键位置信息传输至所述第三接触点；或者，所述第四高通滤波器用于将所述按键位置信息传输至所述第四接触点；或者，所述第三高通滤波器用于将所述按键位置信息传输至所述第三接触点，并且所述第四高通滤波器用于将所述按键位置信息传输至所述第四接触点。
  18. 如权利要求17所述的键盘，其特征在于，所述第三低通滤波器包括一个不小于100欧姆的磁珠；所述第四低通滤波器包括一个不小于100欧姆的磁珠；所述第三高通滤波器包括至少一个电容和至少一个电感；所述第四高通滤波器包括至少一个电容和至少一个电感。
  19. 如权利要求17所述的键盘，其特征在于，所述第三低通滤波器包括至少两个电感和至少一个电容；所述第四低通滤波器包括至少两个电感和至少一个电容；所述第三高通滤波器包括至少一个电容和至少一个电感；所述第四高通滤波器包括至少一个电容和至少一个电感。
  20. 如权利要求17-19任一项所述的键盘，其特征在于，所述第三高通滤波器还用于对所述电子设备传输至所述第三接触点的第一信息进行处理；或者，所述第四高通滤波器还用于对所述电子设备传输至所述第四接触点的第一信息进行处理；所述第一信息用于向所述键盘请求建立通信连接；
    所述第三高通滤波器还用于将第二信息传输至所述第三接触点；或者，所述第四高通滤波器还用于将所述第二信息传输至所述第四接触点；所述第二信息用于表示所述键盘与所述电子设备建立通信连接。
  21. 一种计算机存储介质，其特征在于，包括：计算机指令；当所述计算机指令在电子设备上运行时，使得所述电子设备执行权利要求1-6中任一项所述的方法。
  22. 一种计算机存储介质，其特征在于，包括：计算机指令；当所述计算机指令在键盘上运行时，使得所述键盘执行权利要求7-12中任一项所述的方法。
  23. 一种信号传输方法，其特征在于，应用于设置有第一低通滤波器、第二低通滤波器、第一高通滤波器、第二高通滤波器、第一接触点和第二接触点的电子设备；所述第一低通滤波器和所述第一高通滤波器分别与所述第一接触点相连；所述第二低通滤波器和所述第二高通滤波器分别与所述第二接触点相连；所述第二接触点用于与键盘上的第三接触点相接触，所述第一接触点用于与所述键盘上的第四接触点相接触；所述方法包括：
    所述电子设备将电源信号通过所述第一低通滤波器传输至所述第一接触点，将GND信号通过所述第二低通滤波器传输至所述第二接触点；
    所述电子设备接收所述键盘的所述第四接触点传输至所述第一接触点的按键位置信息，通过所述第一高通滤波器对所述传输至所述第一接触点的按键位置信息进行处理；或者，所述电子设备接收所述键盘的所述第三接触点传输至所述第二接触点的按键位置信息，通过所述第二高通滤波器对所述传输至所述第二接触点的按键位置信息进行处理；或者，所述电子设备接收所述键盘的所述第四接触点传输至所述第一接触点的按键位置信息，通过所述第一高通滤波器对所述传输至所述第一接触点的按键位置信息进行处理，以及接收 所述键盘的所述第三接触点传输至所述第二接触点的按键位置信息，通过所述第二高通滤波器对所述传输至所述第二接触点的按键位置信息进行处理；
    所述方法还包括：
    若所述电子设备向所述键盘请求建立通信连接，所述电子设备将经过所述第一高通滤波器处理后的第一信息通过所述第一接触点发送给所述键盘的所述第四接触点，并经由第四高通滤波器传输至所述键盘的处理器；或者，所述电子设备将经过所述第二高通滤波器处理后的第一信息通过所述第二接触点发送给所述键盘的所述第三接触点，并经由第三高通滤波器传输至所述键盘的处理器；所述第一信息用于向所述键盘请求建立通信连接；所述电子设备通过所述第一接触点接收所述键盘发送的第二信息，通过所述第一高通滤波器对所述第二信息进行处理；或者，所述电子设备通过所述第二接触点接收所述第二信息，通过所述第二高通滤波器对所述第二信息进行处理；所述第二信息用于表示所述键盘与所述电子设备建立通信连接。
  24. 如权利要求23所述的方法，其特征在于，所述第一低通滤波器包括一个不小于100欧姆的磁珠；所述第二低通滤波器包括一个不小于100欧姆的磁珠；所述第一高通滤波器包括至少一个电容和至少一个电感；所述第二高通滤波器包括至少一个电容和至少一个电感。
  25. 如权利要求23或24所述的方法，其特征在于，所述按键位置信息包括USB信号。
  26. 如权利要求23所述的方法，其特征在于，所述按键位置信息包括I2C信号。
  27. 如权利要求26所述的方法，其特征在于，所述第一低通滤波器包括至少两个电感和至少一个电容；所述第二低通滤波器包括至少两个电感和至少一个电容；所述第一高通滤波器包括至少一个电容和至少一个电感；所述第二高通滤波器包括至少一个电容和至少一个电感。
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