CN111431632B - Signal transmission method and electronic equipment - Google Patents

Signal transmission method and electronic equipment Download PDF

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CN111431632B
CN111431632B CN202010221833.6A CN202010221833A CN111431632B CN 111431632 B CN111431632 B CN 111431632B CN 202010221833 A CN202010221833 A CN 202010221833A CN 111431632 B CN111431632 B CN 111431632B
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mipi
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electronic equipment
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CN111431632A (en
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刘林
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G06F15/163—Interprocessor communication
    • G06F15/173—Interprocessor communication using an interconnection network, e.g. matrix, shuffle, pyramid, star, snowflake
    • G06F15/1735—Network adapters, e.g. SCI, Myrinet

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Abstract

The embodiment of the invention provides a signal transmission method and electronic equipment. The method comprises the following steps: reducing the amplitude of a first signal transmitted through an MIPI D-PHY interface and/or increasing the rise time and fall time of the first signal under the condition that a preset condition is met; transmitting a second signal through an MIPI D-PHY interface, wherein the second signal is the first signal after parameter adjustment, and the preset condition comprises at least one of the following conditions: the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold; the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value. According to the embodiment of the invention, the electromagnetic interference caused by data transmission of the liquid crystal screen and the camera module in the electronic equipment by using the MIPI DPHY protocol can be improved, so that the antenna performance and the user experience are improved.

Description

Signal transmission method and electronic equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a signal transmission method and an electronic device.
Background
With the continuous development of intelligent electronic device technology, Liquid Crystal display (LCM) and Camera Module (CMOS Camera Module, CCM) both use the Mobile Industry Processor Interface Physical Layer MIPI D-PHY (Mobile Industry Processor Interface D-Physical Layer) protocol for data transmission. However, in practical use, there is an Electromagnetic Interference (EMI) problem, which may cause Interference to the antenna, so that the performance of the antenna may be degraded, and the user experience may be affected.
With the development of CCM with high pixel and high frame rate, a higher transmission rate is required, and the EMI problem caused by data transmission using the above method is particularly prominent; the structural application of the pole screen and the water drop screen leads the front camera to directly push against the antenna area, so that the EMI problem caused by data transmission in the above mode is more obvious.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a signal transmission method and an electronic device, so as to solve the problems of reduced antenna performance and poor user experience caused by electromagnetic interference due to data transmission using an MIPI DPHY protocol in a liquid crystal display and a camera module in the existing electronic device.
In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a signal transmission method applied to an electronic device, including:
reducing the amplitude of a first signal transmitted through an MIPI D-PHY interface and/or increasing the rise time and fall time of the first signal under the condition that a preset condition is met;
transmitting a second signal through the MIPI D-PHY interface, wherein the second signal is the signal of the first signal after parameter adjustment;
the preset condition comprises at least one of the following conditions:
the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold;
the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value.
In a second aspect, an embodiment of the present invention further provides an electronic device, including:
the parameter adjusting module is used for reducing the amplitude of a first signal transmitted through the MIPI D-PHY interface and/or increasing the rising time and the falling time of the first signal under the condition that a preset condition is met;
the signal transmission module is used for transmitting a second signal through the MIPI D-PHY interface, wherein the second signal is the signal of the first signal after parameter adjustment;
the preset condition comprises at least one of the following conditions:
the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold;
the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value.
In a third aspect, an embodiment of the present invention further provides an electronic device, which includes a processor, a memory, and a computer program stored on the memory and executable on the processor, and when the computer program is executed by the processor, the steps of the signal transmission method described above are implemented.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the signal transmission method as described above.
In the above scheme of the present invention, under the condition that a preset condition is met, reducing the amplitude of a first signal transmitted through an MIPI D-PHY interface, and/or increasing the rise time and the fall time of the first signal; transmitting a second signal through an MIPI D-PHY interface, wherein the second signal is the first signal after parameter adjustment, and the preset condition comprises at least one of the following conditions: the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold; the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value, so that the electromagnetic interference caused by data transmission of a liquid crystal screen and a camera module in the electronic equipment by using an MIPI DPHY protocol can be improved, and the antenna performance and the user experience are improved.
Drawings
Fig. 1 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a parameter adjustment circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention. The method is applied to the electronic equipment. The process of carrying out the process of the invention is described in more detail below with reference to this figure.
Step 101, in the case that a preset condition is met, reducing the amplitude of a first signal transmitted through an MIPI D-PHY interface, and/or increasing the rise time and the fall time of the first signal.
In this step, the preset condition includes at least one of the following conditions:
the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold;
the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value.
Here, the current operating frequency band is a frequency band being used in a currently operating network system.
Optionally, the MIPI D-PHY interface is an MIPI D-PHY interface of a display module and/or a camera module.
It should be noted that the MIPI D-PHY Interface refers to an Interface supporting the MIPI D-PHY (Mobile Industry Processor Interface D-Physical Layer) protocol. The D-PHY is a high-speed, low-power consumption source synchronous physical layer.
Here, the signal quality may be a signal power.
Optionally, the fact that the signal quality of the electronic device in the current operating frequency band is inferior to the preset quality threshold may be that the signal power of the electronic device in the current operating frequency band is smaller than a preset power value.
It should be explained that the electromagnetic interference caused by the signal transmission based on the MIPI D-PHY interface can be improved whether the amplitude of the first signal is reduced or the rise time and the fall time of the first signal are increased, because:
signals transmitted based on the MIPI D-PHY interface are periodic signals, and any periodic signal f (t) can be decomposed into:
Figure BDA0002426364580000031
wherein the Fourier coefficients are:
Figure BDA0002426364580000041
wherein, ω is1＝2π/T1
The fourier transform result of a square wave is easily obtained from the fourier transform:
f(t)＝4/π[sin2πft+1/3 sin6πft+1/5 sin10πft+…+1/n sin2nπft+…]
n＝1,3,5,…
it can be seen that the square wave is composed of fundamental sin harmonics, the amplitude is inversely proportional to the harmonic multiple, such as 3 rd harmonic 3f0, the amplitude is a0/3(f0 is the fundamental frequency, a0 is the amplitude), and since the clock CLK exists in the signal transmitted based on the MIPI D-PHY interface (theoretically a square wave, actually a rise time T is provided)rAnd a fall time TfMarginal), electromagnetic interference is introduced, and the interference amplitude is in direct proportion to A0; the steeper the edge, the more higher harmonics, and the shallower the edge, the fewer harmonics.
Accordingly, the amplitude of the signal transmitted based on the MIPI D-PHY interface is reduced, and/or the rise time and fall time of the signal transmitted based on the MIPI D-PHY interface are increased, that is, the rise time T is made to be largerrAnd a fall time TfThe edges are gentle, and the Fourier transform analysis shows that the amplitude of A0 is small, the higher harmonic component is less, and the electromagnetic interference caused by signal transmission based on the MIPI D-PHY interface can be improved.
And step 102, transmitting a second signal through the MIPI D-PHY interface, wherein the second signal is the signal of the first signal after parameter adjustment.
According to the signal transmission method, under the condition that a preset condition is met, the amplitude of a first signal transmitted through an MIPI D-PHY interface is reduced, and/or the rising time and the falling time of the first signal are increased; transmitting a second signal through an MIPI D-PHY interface, wherein the second signal is the first signal after parameter adjustment, and the preset condition comprises at least one of the following conditions: the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold; the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value, so that the electromagnetic interference caused by data transmission of a liquid crystal screen and a camera module in the electronic equipment by using an MIPI DPHY protocol can be improved, and the antenna performance and the user experience are improved.
Optionally, the first signal comprises: a clock signal and a data signal.
The amplitude of the first signal may be the amplitude of the clock signal, the amplitude of the data signal, or both the amplitudes of the clock signal and the data signal, which may be set according to the actual situation, and is not specifically limited herein.
The increasing of the rising time and the falling time of the first signal may be increasing of the rising time and the falling time of the clock signal, or increasing of the rising time and the falling time of the data signal, or increasing of both the rising time and the falling time of the data signal and the rising time and the falling time of the clock signal, which may be set according to actual situations, and is not specifically limited herein.
It should be noted that the amplitude of the clock signal after amplitude reduction may be the same as or different from the amplitude of the data signal after amplitude reduction, and is not limited herein.
Similarly, the rising time and the falling time of the clock signal after increasing the rising time and the falling time of the clock signal may be the same as or different from the rising time and the falling time of the data signal after increasing the rising time and the falling time of the data signal, and are not limited specifically herein.
As an optional implementation manner, before reducing the amplitude of the first signal transmitted through the MIPI D-PHY interface in step 101, and/or increasing the rise time and the fall time of the first signal, the method of the embodiment of the present invention may further include:
acquiring a first network parameter of the current work of the electronic equipment under the condition of adopting a first signal parameter to transmit the first signal, wherein the first network parameter comprises a network type and a frequency band;
here, the step may specifically include:
under the condition that the signal transmission of the MIPI D-PHY interface is carried out based on the first signal parameter before adjustment, whether a target event needing to use a network exists is judged;
if the current network environment exists, determining a first network parameter of the current work of the electronic equipment according to the current network environment; otherwise, continuing to transmit the signals of the MIPI D-PHY interface based on the first signal parameters before adjustment.
It should be noted that the target event may be an internet event, a voice call event, or the like.
Determining a second signal parameter corresponding to the first network parameter according to a preset corresponding relation between the signal parameter of the MIPI D-PHY interface and the network parameter;
in this step, a plurality of sets of signal parameters of the MIPI D-PHY interface are preset, wherein each set of signal parameters meets requirements of an MIPI D-PHY protocol and signal quality.
Accordingly, the reducing the amplitude of the first signal transmitted through the MIPI D-PHY interface and/or increasing the rise time and the fall time of the first signal in step 101 according to the embodiment of the present invention may specifically include:
reducing an amplitude of a first signal transmitted over the MIPI D-PHY interface and/or increasing a rise time and a fall time of the first signal, in accordance with the second signal parameter.
In one example, such as: presetting signal parameters of three groups of MIPI D-PHY interfaces, which comprises the following steps:
p1 set of parameters: the frequency is 1.2GHz, the amplitude VOD of the signal (comprising clk and data) is 200mV, and the rising time and the falling time Tr/Tf of the signal are 100 ps; the set of parameters is more conventional and can be used as signal parameters before adjustment.
P2 set of parameters: the frequency is 1.2GHz, the amplitude VOD of the signal (comprising clk and data) is 150mV, and the rising time and the falling time Tr/Tf of the signal are 150 ps;
p3 set of parameters: the frequency is 1.2GHz, the amplitude VOD of the clock signal clk is 200mV, the rising time and the falling time Tr/Tf of the clock signal are 150ps, the amplitude VOD of the data signal data is 150mV, and the rising time and the falling time Tr/Tf of the data signal are 150 ps.
In practical application, under the condition that the electromagnetic interference problem caused by the MIPI occurs in the B3 channel, the P2 parameter is used in the B3 channel, so that the interference of the MIPI on the B3 channel can be reduced as much as possible, and the antenna performance is improved.
As another optional implementation manner, as shown in fig. 2, a parameter adjusting circuit is disposed on the MIPI path of the electronic device, and the parameter adjusting circuit is configured to adjust a signal parameter of the first signal transmitted through the MIPI D-PHY interface; wherein the parameter adjustment circuit comprises: the circuit comprises a preset resistor, a preset capacitor and a first controllable switch; the first controllable switch is respectively connected with the MIPI access and the preset capacitor.
It should be noted that, as shown in fig. 2, optionally, the MIPI path is a MIPI differential path. The MIPI path comprises a P path 1 and an N path 2, wherein the preset resistor comprises: a first resistor R1 and a second resistor R2; the preset capacitor includes: a first capacitor C1 and a second capacitor C2; the controllable switch comprises: a first controllable switch 3 and a second controllable switch 4.
Specifically, the first controllable switch 3 is respectively connected with the P path 1 and the first capacitor C1, and the second controllable switch 4 is respectively connected with the N path 2 and the second capacitor C2; and an enabling end EMI _ EN of the MIPI path is respectively connected with the first controllable switch 3 and the second controllable switch 4.
Based on this, the reducing the amplitude of the first signal transmitted through the MIPI D-PHY interface and/or increasing the rise time and the fall time of the first signal in step 101 corresponding to the embodiment of the present invention may specifically include:
when a first enabling end of the MIPI path receives a first conducting signal, the preset resistor is connected in series with the MIPI path; and/or the presence of a gas in the gas,
when a second enabling end of the MIPI path receives a second conducting signal, the preset capacitor is connected in parallel to the MIPI path through the controllable switch.
It should be noted that, when it is detected that the signal quality of the electronic device in the current operating frequency band is inferior to the preset quality threshold; and/or when the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value, a controller of the electronic equipment outputs a first conducting signal and/or a second conducting signal.
Here, the predetermined resistor is connected in series to the MIPI path at a first enable terminal (not shown in fig. 2) that outputs a first turn-on signal to the MIPI path, as shown in fig. 2.
Optionally, a switch may be connected in parallel to two ends of the preset resistor, the switch is controlled to be closed when the first conduction signal is not received, and the switch is controlled to be opened when the first conduction signal is received, so that the preset resistor is connected in series to the MIPI path.
Outputting a second conducting signal to a second enable terminal of the MIPI path, i.e. an enable terminal EMI _ EN in fig. 2, so that the first capacitor C1 is connected in parallel to the P path 1 through the first controllable switch 3; a second capacitor C2 is connected in parallel to N path 2 via a second controllable switch 4.
It should be noted that, through the parameter adjusting circuit, signal parameters of the MIPI D-PHY interface can be adjusted.
Optionally, the controllable switch is a CMOS switch.
According to practical application, adjustment is carried out, for example, 33 omega is selected by the preset resistor, and 0.5pF is selected by the preset capacitor, so that the series resistor changes the path impedance, the signal amplitude can be reduced, and the parallel capacitor can slow down the signal edge.
According to the signal transmission method, under the condition that a preset condition is met, the amplitude of a first signal transmitted through an MIPI D-PHY interface is reduced, and/or the rising time and the falling time of the first signal are increased; transmitting a second signal through an MIPI D-PHY interface, wherein the second signal is the first signal after parameter adjustment, and the preset condition comprises at least one of the following conditions: the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold; the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value, so that the electromagnetic interference caused by data transmission of a liquid crystal screen and a camera module in the electronic equipment by using an MIPI DPHY protocol can be improved, and the antenna performance and the user experience are improved.
Based on the method, the embodiment of the invention provides electronic equipment for realizing the method.
Fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. An embodiment of the present invention provides an electronic device 300, where the electronic device 300 may include:
a parameter adjusting module 301, configured to, if a preset condition is met, reduce an amplitude of a first signal transmitted through the MIPI D-PHY interface, and/or increase a rise time and a fall time of the first signal:
a signal transmission module 302, configured to transmit a second signal through the MIPI D-PHY interface, where the second signal is a signal obtained by parameter adjustment of the first signal;
the preset condition comprises at least one of the following conditions:
the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold;
the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value.
Optionally, the first signal comprises a clock signal and a data signal.
Optionally, the electronic device 300 further includes:
the acquisition module is used for acquiring a first network parameter of the current work of the electronic equipment under the condition of adopting a first signal parameter to transmit the first signal, wherein the first network parameter comprises a network type and a frequency band;
the processing module is used for determining a second signal parameter corresponding to the first network parameter according to a preset corresponding relation between the signal parameter of the MIPI D-PHY interface and the network parameter;
accordingly, the parameter adjustment module comprises:
a first adjusting unit, configured to decrease an amplitude of a first signal transmitted through the MIPI D-PHY interface and/or increase a rise time and a fall time of the first signal according to the second signal parameter.
Optionally, a parameter adjusting circuit is disposed on the MIPI path of the electronic device, and the parameter adjusting circuit is configured to adjust a signal parameter of the first signal transmitted through the MIPI D-PHY interface;
wherein the parameter adjustment circuit comprises: the circuit comprises a preset resistor, a preset capacitor and a first controllable switch;
the first controllable switch is respectively connected with the MIPI access and the preset capacitor.
Optionally, the parameter adjusting module 301 includes:
the second adjusting unit is used for connecting the preset resistor in series with the MIPI path when a first enabling end of the MIPI path receives a first conduction signal; and/or the presence of a gas in the gas,
and the third adjusting unit is used for connecting the preset capacitor in parallel with the MIPI through the controllable switch when a second enabling end of the MIPI receives a second conducting signal.
The electronic device provided in the embodiment of the present invention can implement each process implemented by the electronic device in the method embodiments of fig. 1 to fig. 2, and is not described herein again to avoid repetition.
In the electronic device provided by the embodiment of the present invention, the parameter adjusting module reduces the amplitude of the first signal transmitted through the MIPI D-PHY interface and/or increases the rise time and the fall time of the first signal when the parameter adjusting module meets the preset condition; the signal transmission module transmits a second signal through an MIPI D-PHY interface, wherein the second signal is the first signal after parameter adjustment, and the preset condition comprises at least one of the following conditions: the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold; the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value, so that the electromagnetic interference caused by data transmission of a liquid crystal screen and a camera module in the electronic equipment by using an MIPI DPHY protocol can be improved, and the antenna performance and the user experience are improved.
Fig. 4 is a schematic diagram of a hardware structure of an electronic device implementing various embodiments of the present invention.
The electronic device 400 includes, but is not limited to: radio frequency unit 401, network module 402, audio output unit 403, input unit 404, sensor 405, display unit 406, user input unit 407, interface unit 408, memory 409, processor 410, and power supply 411. Those skilled in the art will appreciate that the electronic device configuration shown in fig. 4 does not constitute a limitation of the electronic device, and that the electronic device may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, a pedometer, and the like.
The method comprises the steps that under the condition that a preset condition is met, the amplitude of a first signal transmitted through an MIPI D-PHY interface is reduced, and/or the rising time and the falling time of the first signal are increased; transmitting a second signal through an MIPI D-PHY interface, wherein the second signal is the first signal after parameter adjustment, and the preset condition comprises at least one of the following conditions: the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold; the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value.
In the embodiment of the invention, the electromagnetic interference caused by the fact that the liquid crystal screen and the camera module in the electronic equipment use the MIPI DPHY protocol for data transmission can be improved, and therefore the antenna performance and the user experience are improved.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 401 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 410; in addition, the uplink data is transmitted to the base station. Typically, radio unit 401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio unit 401 can also communicate with a network and other devices through a wireless communication system.
The electronic device provides wireless broadband internet access to the user via the network module 402, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.
The audio output unit 403 may convert audio data received by the radio frequency unit 401 or the network module 402 or stored in the memory 409 into an audio signal and output as sound. Also, the audio output unit 403 may also provide audio output related to a specific function performed by the electronic apparatus 400 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 403 includes a speaker, a buzzer, a receiver, and the like.
The input unit 404 is used to receive audio or video signals. The input Unit 404 may include a Graphics Processing Unit (GPU) 4041 and a microphone 4042, and the Graphics processor 4041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 406. The image frames processed by the graphic processor 4041 may be stored in the memory 409 (or other storage medium) or transmitted via the radio frequency unit 401 or the network module 402. The microphone 4042 may receive sound, and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 401 in case of the phone call mode.
The electronic device 400 also includes at least one sensor 405, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 4061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 4061 and/or the backlight when the electronic apparatus 400 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the mobile electronic device (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 405 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described in detail herein.
The display unit 406 is used to display information input by the user or information provided to the user. The Display unit 406 may include a Display panel 4061, and the Display panel 4061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 407 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile electronic device. Specifically, the user input unit 407 includes a touch panel 4071 and other input devices 4072. Touch panel 4071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 4071 using a finger, a stylus, or any suitable object or attachment). The touch panel 4071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 410, receives a command from the processor 410, and executes the command. In addition, the touch panel 4071 can be implemented by using various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 4071, the user input unit 407 may include other input devices 4072. Specifically, the other input devices 4072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 4071 can be overlaid on the display panel 4061, and when the touch panel 4071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 410 to determine the type of the touch event, and then the processor 410 provides a corresponding visual output on the display panel 4061 according to the type of the touch event. Although in fig. 4, the touch panel 4071 and the display panel 4061 are two separate components to implement the input and output functions of the mobile electronic device, in some embodiments, the touch panel 4071 and the display panel 4061 may be integrated to implement the input and output functions of the mobile electronic device, which is not limited herein.
The interface unit 408 is an interface for connecting an external device to the electronic apparatus 400. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 408 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the electronic apparatus 400 or may be used to transmit data between the electronic apparatus 400 and an external device.
The memory 409 may be used to store software programs as well as various data. The memory 409 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 409 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 410 is a control center of the mobile electronic device, connects various parts of the entire mobile electronic device using various interfaces and lines, and performs various functions of the mobile electronic device and processes data by operating or executing software programs and/or modules stored in the memory 409 and calling data stored in the memory 409, thereby monitoring the mobile electronic device as a whole. Processor 410 may include one or more processing units; preferably, the processor 410 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 410.
The electronic device 400 may further include a power supply 411 (e.g., a battery) for supplying power to various components, and preferably, the power supply 411 may be logically connected to the processor 410 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.
In addition, the electronic device 400 includes some functional modules that are not shown, and are not described in detail herein.
Preferably, an embodiment of the present invention further provides an electronic device, which includes a processor 410, a memory 409, and a computer program stored in the memory 409 and capable of being executed on the processor 410, where the computer program, when executed by the processor 410, implements each process of the foregoing signal transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the signal transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling an electronic device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (7)

1. A signal transmission method is applied to electronic equipment and is characterized by comprising the following steps:
reducing the amplitude of a first signal transmitted through an MIPID-PHY interface and/or increasing the rise time and fall time of the first signal under the condition that a preset condition is met;
transmitting a second signal through the MIPID-PHY interface, wherein the second signal is the signal of the first signal after parameter adjustment;
the preset condition comprises at least one of the following conditions:
the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold;
the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value;
a parameter adjusting circuit is arranged on an MIPI (Mobile industry processor interface) of the electronic equipment and used for adjusting signal parameters of the first signal transmitted through the MIPID-PHY interface;
wherein the parameter adjustment circuit comprises: the device comprises a preset resistor, a preset capacitor and a controllable switch;
the controllable switch is respectively connected with the MIPI path and the preset capacitor;
the reducing the amplitude of the first signal transmitted through the MIPID-PHY interface and/or increasing the rise time and fall time of the first signal includes:
when a first enabling end of the MIPI path receives a first conducting signal, the preset resistor is connected in series with the MIPI path; and/or the presence of a gas in the gas,
when a second enabling end of the MIPI path receives a second conducting signal, the preset capacitor is connected in parallel to the MIPI path through the controllable switch;
and the two ends of the preset resistor are connected with a switch in parallel, the switch is controlled to be closed under the condition that the first conduction signal is not received, and the switch is controlled to be opened under the condition that the first conduction signal is received, so that the preset resistor is connected in series with the MIPI path.
2. The method of claim 1, wherein the first signal comprises a clock signal and a data signal.
3. The method of claim 1, wherein before reducing the amplitude of the first signal transmitted over the MIPID-PHY interface and/or increasing the rise time and fall time of the first signal, the method further comprises:
acquiring a first network parameter of the current work of the electronic equipment under the condition of adopting a first signal parameter to transmit the first signal, wherein the first network parameter comprises a network type and a frequency band;
determining a second signal parameter corresponding to the first network parameter according to a preset corresponding relation between the signal parameter of the MIPID-PHY interface and the network parameter;
the reducing the amplitude of the first signal transmitted through the MIPID-PHY interface and/or increasing the rise time and fall time of the first signal includes:
reducing an amplitude of a first signal transmitted over the MIPID-PHY interface and/or increasing a rise time and a fall time of the first signal, in accordance with the second signal parameter.
4. An electronic device, comprising:
the parameter adjusting module is used for reducing the amplitude of a first signal transmitted through the MIPID-PHY interface and/or increasing the rising time and the falling time of the first signal under the condition that a preset condition is met;
the signal transmission module is used for transmitting a second signal through the MIPID-PHY interface, wherein the second signal is the signal of the first signal after parameter adjustment;
the preset condition comprises at least one of the following conditions:
the signal quality of the electronic equipment on the current working frequency band is inferior to a preset quality threshold;
the electromagnetic sensitivity of the electronic equipment is smaller than a preset threshold value;
a parameter adjusting circuit is arranged on an MIPI (Mobile industry processor interface) of the electronic equipment and used for adjusting signal parameters of the first signal transmitted through the MIPID-PHY interface;
wherein the parameter adjustment circuit comprises: the device comprises a preset resistor, a preset capacitor and a controllable switch;
the controllable switch is respectively connected with the MIPI path and the preset capacitor;
the parameter adjustment module comprises:
the second adjusting unit is used for connecting the preset resistor in series with the MIPI path when a first enabling end of the MIPI path receives a first conduction signal; and/or the presence of a gas in the gas,
a third adjusting unit, wherein when a second enable terminal of the MIPI path receives a second conduction signal, the preset capacitor is connected in parallel to the MIPI path through the controllable switch;
and the two ends of the preset resistor are connected with a switch in parallel, the switch is controlled to be closed under the condition that the first conduction signal is not received, and the switch is controlled to be opened under the condition that the first conduction signal is received, so that the preset resistor is connected in series with the MIPI path.
5. The electronic device of claim 4, wherein the first signal comprises a clock signal and a data signal.
6. The electronic device of claim 4, further comprising:
the acquisition module is used for acquiring a first network parameter of the current work of the electronic equipment under the condition of adopting a first signal parameter to transmit the first signal, wherein the first network parameter comprises a network type and a frequency band;
the processing module is used for determining a second signal parameter corresponding to the first network parameter according to a preset corresponding relation between the signal parameter of the MIPID-PHY interface and the network parameter;
the parameter adjustment module comprises:
a first adjusting unit, configured to reduce an amplitude of a first signal transmitted through the MIPID-PHY interface and/or increase a rise time and a fall time of the first signal according to the second signal parameter.
7. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the signal transmission method according to one of claims 1 to 3.
CN202010221833.6A 2020-03-26 2020-03-26 Signal transmission method and electronic equipment Active CN111431632B (en)

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CN106921761A (en) * 2015-12-25 2017-07-04 小米科技有限责任公司 Display module and electronic equipment
CN107147419A (en) * 2017-05-09 2017-09-08 广东欧珀移动通信有限公司 Reduce method, storage medium and the terminal of signal interference

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CN103974267A (en) * 2013-02-06 2014-08-06 索尼移动通讯有限公司 Interference reduction method and device and mobile terminal
CN104702103A (en) * 2013-12-10 2015-06-10 展讯通信（上海）有限公司 DC-DC (direct current-direct current) conversion device
CN104994204A (en) * 2015-07-22 2015-10-21 广东欧珀移动通信有限公司 Method and system for lowering interference of terminal display screen
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