CN109508311A - Signal processing circuit, terminal and signal processing method - Google Patents
Signal processing circuit, terminal and signal processing method Download PDFInfo
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- CN109508311A CN109508311A CN201811346403.6A CN201811346403A CN109508311A CN 109508311 A CN109508311 A CN 109508311A CN 201811346403 A CN201811346403 A CN 201811346403A CN 109508311 A CN109508311 A CN 109508311A
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- 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
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4086—Bus impedance matching, e.g. termination
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- 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
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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- General Engineering & Computer Science (AREA)
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Abstract
The present invention provides a kind of signal processing circuit, terminal and signal processing method, the signal processing circuit includes phase shifter and impedance matching circuit, wherein: the phase shifter is connect with the differential signal outputs of the processor in the terminal, phase shifting control end and impedance matching circuit respectively, for under the control for the control signal that the phase shifting control end is sent, phase shift is carried out to the differential signal, and the differential signal after phase shift is output to the impedance matching circuit；The impedance matching circuit is connect with the ground of the display screen of the terminal, for carrying out impedance matching to the differential signal after phase shift, and the differential signal after impedance matching is output to the ground of display screen.In this way, the differential signal after phase shift can have the part offset with the differential signal of non-phase shift, to reduce the influence of some other component in the Difference signal pair terminal of non-phase shift.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of signal processing circuits, terminal and signal processing method.
Background technique
With the rapid development of terminal technology, terminal has become essential a kind of tool in people's life, and
Various aspects for user's life are brought great convenience.Also, as the frequency of people's using terminal is more and more, terminal
The update cycle of technology is getting faster, and requirement of the user to terminal capabilities is also higher and higher.
But since the processor of terminal to display screen drive module sends differential signal, in the Difference signal pair terminal
The influence of some other component is bigger.
Summary of the invention
The embodiment of the present invention provides a kind of signal processing circuit, terminal and signal processing method, to solve the processing of terminal
Device sends differential signal to display screen drive module, and the influence of some other component is bigger in the Difference signal pair terminal
Problem.
In order to solve the above-mentioned technical problem, the present invention is implemented as follows:
In a first aspect, being applied to terminal, the signal processing electricity the embodiment of the invention provides a kind of signal processing circuit
Road includes phase shifter and impedance matching circuit, in which:
The phase shifter respectively with the differential signal outputs of the processor in the terminal, phase shifting control end and impedance
With circuit connection, for carrying out phase shift to the differential signal under the control for the control signal that the phase shifting control end is sent,
And the differential signal after phase shift is output to the impedance matching circuit；
The impedance matching circuit is connect with the ground of the display screen of the terminal, for the differential signal after phase shift into
Row impedance matching, and the differential signal after impedance matching is output to the ground of display screen.
Second aspect, the embodiment of the present invention also provide a kind of terminal, including above-mentioned signal processing circuit.
The third aspect, the embodiment of the present invention also provide a kind of signal processing method, are applied to terminal, the signal processing side
Method includes:
Phase shift is carried out to an at least differential signal for the processor output of the terminal, so that the differential signal after phase shift
There is the part offset with the differential signal of non-phase shift, the differential signal of the non-phase shift is that the processor is output to the end
The differential signal of the display screen drive module at end；
Differential signal after phase shift is output to the impedance matching circuit of the terminal；
Impedance matching is carried out to the differential signal for the impedance matching circuit for being output to the terminal, and will be after impedance matching
Differential signal be output to the terminal display screen ground.
Fourth aspect, the embodiment of the present invention also provide a kind of terminal, and the terminal includes:
Phase shift block, at least differential signal for the processor output to the terminal carries out phase shift, so that phase shift
There is the part offset in the differential signal of differential signal and non-phase shift later, the differential signal of the non-phase shift is the processing
Device is output to the differential signal of the display screen drive module of the terminal；
Output module, for the differential signal after phase shift to be output to the impedance matching circuit of the terminal；
Processing module carries out impedance matching for the differential signal to the impedance matching circuit for being output to the terminal, and
Differential signal after impedance matching is output to the ground of the display screen of the terminal.
5th aspect, the embodiment of the present invention also provide a kind of terminal, including processor, memory and are stored in the storage
On device and the computer program that can run on the processor, realized when the computer program is executed by the processor
The step of stating signal processing method.
6th aspect, the embodiment of the present invention also provide a kind of computer readable storage medium, the computer-readable storage
Computer program is stored on medium, the step of computer program realizes above-mentioned signal processing method when being executed by processor.
A kind of signal processing circuit of the embodiment of the present invention is applied to terminal, and the signal processing circuit includes phase shifter
And impedance matching circuit, in which: the phase shifter respectively with the differential signal outputs of the processor in the terminal, phase shift control
End processed is connected with impedance matching circuit, for the phase shifting control end send control signal control under, to the difference
Signal carries out phase shift, and the differential signal after phase shift is output to the impedance matching circuit；The impedance matching circuit with
The ground of the display screen of the terminal connects, for carrying out impedance matching to the differential signal after phase shift, and by impedance matching it
Differential signal afterwards is output to the ground of display screen.In this way, the differential signal after phase shift can exist with the differential signal of non-phase shift
The part of counteracting, to reduce the influence of some other component in the Difference signal pair terminal of non-phase shift.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is one of the structural schematic diagram of signal processing circuit provided in an embodiment of the present invention；
Fig. 2 is the flow chart of signal processing method provided in an embodiment of the present invention；
Fig. 3 is one of emulation schematic diagram provided in an embodiment of the present invention；
Fig. 4 is the two of emulation schematic diagram provided in an embodiment of the present invention；
Fig. 5 is the three of emulation schematic diagram provided in an embodiment of the present invention；
Fig. 6 is that the interference signal of differential lines port provided in an embodiment of the present invention is coupled to the energy size of antenna port
One of schematic diagram；
Fig. 7 is that the interference signal of differential lines port provided in an embodiment of the present invention is coupled to the energy size of antenna port
The two of schematic diagram；
Fig. 8 is that the interference signal of differential lines port provided in an embodiment of the present invention is coupled to the energy size of antenna port
The three of schematic diagram；
Fig. 9 is that the interference signal of differential lines port provided in an embodiment of the present invention is coupled to the energy size of antenna port
The four of schematic diagram；
Figure 10 is the second structural representation of signal processing circuit provided in an embodiment of the present invention；
Figure 11 is one of the structural schematic diagram of terminal provided in an embodiment of the present invention；
Figure 12 is the structural schematic diagram of the phase shift block of terminal provided in an embodiment of the present invention；
Figure 13 is terminal provided in an embodiment of the present invention stator modules structural schematic diagram really；
Figure 14 is the second structural representation of terminal provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
It is the structural schematic diagram of signal processing circuit provided in an embodiment of the present invention referring to Fig. 1, Fig. 1, is applied to terminal, such as
Shown in Fig. 1, including phase shifter 1 and impedance matching circuit 2, in which:
The phase shifter 1 respectively with the differential signal outputs of the processor 3 in the terminal, phase shifting control end and impedance
Match circuit 2 connects, for being moved under the control for the control signal that the phase shifting control end is sent to the differential signal
Phase, and the differential signal after phase shift is output to the impedance matching circuit 2；
The impedance matching circuit 2 is connect with the ground of the display screen of the terminal, for the differential signal after phase shift
Impedance matching is carried out, and the differential signal after impedance matching is output to the ground of display screen.
In the present embodiment, 3 script of processor there is the route that differential signal is output to display screen drive module 4.Place
Managing device 3 can be by controlling CTRL network, and the working frequency range, channel (frequency of Antenna Operation) when according to Antenna Operation are come really
Fixed and control 1 phase shift of phase shifter degree, such as: 0 °, 30 °, 60 °, 90 °, 120 °, 150 ° or 180 ° etc..Phase shifter 1
How much specific phase shift spends, and after can emulating according to electromagnetic field simulation software, it is corresponding in different operating frequency phase shifters 1 to list antenna
Phase shift degree.
In the present embodiment, above-mentioned impedance matching circuit 2 can carry out impedance matching to the signal network of 1 phase shift of phase shifter,
To reach optimal phase shift accuracy.Differential signal after impedance matching is output to the ground of display screen, so as to reach
Optimal phase shift accuracy.While the differential signal of differential signal and non-phase shift after phase shift can also be made to reach best letter
Number integrality.
In the present embodiment, phase shift is carried out to differential signal by phase shifter, the differential signal after phase shift can be with processing
There is the part offset in the differential signal without phase shift that device 3 is output to display screen drive module 4, to reduce non-phase shift
The influence of some other component in Difference signal pair terminal.Certainly, the influence to antenna can also be reduced in this way,
Improve antenna sensitivity.
In the present embodiment, above-mentioned terminal can be mobile phone, tablet computer (Tablet Personal Computer), above-knee
Type computer (Laptop Computer), personal digital assistant (personal digital assistant, abbreviation PDA), movement
Internet device (Mobile Internet Device, MID) or wearable device (Wearable Device) etc..
Optionally, the terminal has circuit board, and the processor is connect by the circuit board with the display screen, institute
Impedance matching circuit 2 is stated to be set on the circuit board.
In present embodiment, by the way that impedance matching circuit 2 to be set on the circuit board, so as to be convenient for impedance
Setting with circuit 2.
Optionally, the differential signal is mobile industry processor interface (Mobile Industry Processor
Interface, MIPI) differential signal.
In present embodiment, above-mentioned differential signal is MIPI differential signal, so as to reduce MIPI Difference signal pair day
The influence of line improves antenna sensitivity.
A kind of signal processing circuit of the embodiment of the present invention, including phase shifter 1 and impedance matching circuit 2, in which: the shifting
Phase device 1 is connect with the differential signal outputs of the processor 3 in the terminal, phase shifting control end and impedance matching circuit 2 respectively,
For the phase shifting control end send control signal control under, to the differential signal carry out phase shift, and by phase shift it
Differential signal afterwards is output to the impedance matching circuit 2；The ground of the impedance matching circuit 2 and the display screen of the terminal connects
It connects, for carrying out impedance matching to the differential signal after phase shift, and the differential signal after impedance matching is output to display
The ground of screen.In this way, the differential signal after phase shift can have the part offset with the differential signal of non-phase shift, do not moved to reduce
The influence of some other component in the Difference signal pair terminal of phase.
The embodiment of the present invention also provides a kind of terminal, including above-mentioned signal processing circuit.
Referring to fig. 2, Fig. 2 is the flow chart of signal processing method provided in an embodiment of the present invention, is applied to terminal, such as Fig. 2
It is shown, comprising the following steps:
Step 201 carries out phase shift to an at least differential signal for the processor output of the terminal, so that after phase shift
There is the part offset in differential signal and the differential signal of non-phase shift, the differential signal of the non-phase shift is processor output
To the differential signal of the display screen drive module of the terminal.
In the present embodiment, phase shift is carried out to an at least differential signal for the processor of terminal output so that phase shift it
There is the part offset in the differential signal of differential signal and non-phase shift afterwards, so as to reduce the Difference signal pair end of non-phase shift
The influence of some other component on end.Certainly, the influence to antenna can also be reduced in this way, to improve antenna
Sensitivity.
Step 202, the impedance matching circuit that the differential signal after phase shift is output to the terminal.
In the present embodiment, the differential signal after phase shift is output to the impedance matching circuit of the terminal, consequently facilitating
Impedance matching circuit handles the differential signal after phase shift.
Step 203 carries out impedance matching to the differential signal of the impedance matching circuit for being output to the terminal, and by impedance
Differential signal after matching is output to the ground of the display screen of the terminal.
In the present embodiment, above-mentioned impedance matching circuit can carry out impedance matching to the signal network of phase shifter phase shift, with
Reach optimal phase shift accuracy.Differential signal after impedance matching is output to the ground of display screen, so as to reach most
Good phase shift accuracy.While the differential signal of differential signal and non-phase shift after phase shift can also be made to reach best signal
Integrality.
Optionally, an at least differential signal for the processor output to the terminal carries out phase shift, comprising:
Determine that an at least differential signal needs the target phase of phase shift from the emulation data tested in advance；
An at least differential signal is subjected to phase shift to the target phase.
In present embodiment, determine that an at least differential signal needs the mesh of phase shift from the emulation data tested in advance
Phase is marked, under the target phase, the differential signal of differential signal and non-phase shift after phase shift can be made to support there are maximum
The amount of disappearing, alternatively, can also make that differential signal after phase shift and the differential signal of non-phase shift offset to be partially larger than some default
Threshold value etc..It can specifically make adjustment according to the actual situation, this present embodiment is not construed as limiting.Above-mentioned emulation data can be with
It is that obtained data are emulated by electromagnetic field simulation software (such as 3 D electromagnetic field simulation software).
In present embodiment, determine that an at least differential signal needs the mesh of phase shift from the emulation data tested in advance
Mark phase；An at least differential signal is subjected to phase shift to the target phase, so as to quickly determine an at least difference
Signal needs the phase of phase shift, saves the time of adjustment.
It can be that the embodiment of the present invention is provided refering to Fig. 3 to Fig. 5, Fig. 3 to Fig. 5 to better understand the above process
Emulation schematic diagram.As shown in figure 3, being at this time normal cabling, the signal on cabling 1 is differential signal group A (MIPI_DSI0_
LANE3_M and MIPI_DSI0_LANE3_P), the signal on cabling 2 be differential signal group B (MIPI_DSI0_LANE3_M with
MIPI_DSI0_LANE3_P), differential signal group A and the B not phase shift of differential signal group.Again as shown in figure 4, differential signal group A passes through
Phase shifter all phase shifts, so as to offset differential signal group B to the signal interference of antenna.
Referring again to Fig. 5, differential signal group B not phase shift, and 0 ° of differential signal group A phase shift, 30 °, 60 °, 90 °, 120 °,
150 ° and 180 °, for antenna in 900MHZ frequency, the differential signal electric interfering field sensed is different.More black portion in Fig. 5
Position is the stronger position of electric interfering field.
Also, by Fig. 5 it is known that differential signal group A is by 0 ° of phase shift of phase shifter, i.e., not phase shift when, in the middle part of antenna
Black region is bigger, and antenna may result in more serious radio-frequency sensitivity problem by differential signal serious interference.Difference
For signal group A by all 180 ° of phase shift of phase shifter, antenna middle part black region is minimum, i.e., the differential signal that antenna induction arrives interferes electricity
Field is minimum.
Optionally, described to determine that an at least differential signal needs the target of phase shift from the emulation data tested in advance
Phase, comprising:
Obtain the working frequency of antenna；
From the emulation data tested in advance, determine that an at least differential signal needs phase shift at the operating frequencies
Target phase.
In present embodiment, the working frequency range and channel when the working frequency of above-mentioned antenna can be according to Antenna Operation are come really
It is fixed.After the working frequency for obtaining antenna, an at least differential signal can be determined from the emulation data tested in advance
The target phase of phase shift is needed at the operating frequencies.Thus when determining target phase, it can more targetedly, in day
Utmostly reduce the influence of Difference signal pair antenna under the working frequency of line as far as possible.
It can be that the embodiment of the present invention is provided refering to Fig. 6 to Fig. 9, Fig. 6 to Fig. 9 to better understand the above process
Differential lines port interference signal be coupled to antenna port energy size schematic diagram.And S21 of the Fig. 6 into Fig. 9 is positive
To transmission coefficient, i.e. gain, unit dB.
As shown in fig. 6, state of the program after 180 ° of phase shift relative to not phase shift, at 0 ° of phase shift, S21 is-
50.333029dB, when 180 ° of phase shift, S21 is -72.990707dB, and difference is -50.333029dB- (- 72.990707dB)
=22.657678dB, the energy that the interference signal of corresponding 900MHz frequency is coupled to antenna have the interference of 20dB or more, improve effect
Fruit is clearly.
As shown in fig. 7, the state after 90 ° of phase shift relative to not phase shift, at 0 ° of phase shift, S21 is -43.351822dB, when
At 90 ° of phase shift, S21 is -65.563339dB, difference 22.211517dB.The interference signal of corresponding 1800MHz frequency is coupled to
The energy of antenna has the interference of 20dB or more, and improvement is clearly.
As shown in figure 8, the state after 180 ° of phase shift relative to not phase shift, at 0 ° of phase shift, S21 is -38.071513dB,
When 180 ° of phase shift, S21 is -59.409576dB, difference 21.338063dB.The interference signal coupling of corresponding 2700MHz frequency
The energy for closing antenna has the interference of 20dB or more, and improvement is clearly.
As shown in figure 9, the state after 120 ° of phase shift relative to not phase shift, at 0 ° of phase shift, S21 is -34.011193dB,
When 120 ° of phase shift, S21 is -41.692496dB, difference 7.681303dB.The interference signal coupling of corresponding 3700MHz frequency
There is the interference of 7dB or more to the energy of antenna, improvement is obvious.
Certainly, 900MHz, 1800MHZ, 2700MHZ and 3700MHZ of Fig. 6 to Fig. 9 only wherein four frequency points, using setting
In meter, working frequency range, channel when can be according to Antenna Operation determine come specific.Working frequency range, channel when Antenna Operation are not
Together, it needs the degree of phase shift different, is handled differently according to specific circumstances, to maximize the reception for reducing Difference signal pair antenna
The influence of sensitivity.
It determines the phase shift degree under particular job frequency range, opens up timing in product, it is soft by carrying out electromagnetic-field simulation in advance
0 °~180 ° of analogue simulation of part (such as 3 D electromagnetic field simulation software), then confirm that phase shifter phase shift is best to which degree.
Optionally, an at least differential signal for the processor output to the terminal carries out phase shift, comprising:
Phase shift is carried out to each differential signal of processor output.
In present embodiment, phase shift is carried out to each differential signal of processor output, thus to each difference
Signal can be offset, and so as to further decrease the influence of Difference signal pair antenna, further increase antenna sensitivity.
It, can be with 0, Figure 10 refering to fig. 1 for signal processing provided in an embodiment of the present invention in order to better understand the above process
The structural schematic diagram of circuit.As shown in Figure 10, there are five phase shifters between processor and display screen drive module, and each
Phase shifter can carry out phase shift to respective differential signal, and the differential signal after phase shift is output to corresponding impedance
Match circuit carries out subsequent processing.In this way, can substantially reduce the influence of Difference signal pair antenna.
Optionally, the differential signal is MIPI differential signal.
In present embodiment, above-mentioned differential signal is MIPI differential signal, so as to reduce MIPI Difference signal pair day
The influence of line improves antenna sensitivity.
A kind of signal processing method of the embodiment of the present invention, to an at least differential signal for the processor output of the terminal
Phase shift is carried out, so that there is the part offset in the differential signal of differential signal and non-phase shift after phase shift, the non-phase shift
Differential signal is the differential signal for the display screen drive module that the processor is output to the terminal；By the difference after phase shift
Signal is output to the impedance matching circuit of the terminal；The differential signal for the impedance matching circuit for being output to the terminal is carried out
Impedance matching, and the differential signal after impedance matching is output to the ground of the display screen of the terminal.In this way, after phase shift
Differential signal can have the part offset with the differential signal of non-phase shift, to reduce in the Difference signal pair terminal of non-phase shift it
The influence of his some components.
It is the structure chart of terminal provided in an embodiment of the present invention referring to Figure 11, Figure 11, is able to achieve signal in above-described embodiment
The details of processing method, and reach identical effect.As shown in figure 11, terminal 1100 includes phase shift block 1101, output module
1102 and processing module 1103, phase shift block 1101 and output module 1102 connect, output module 1102 and processing module 1103
Connection, in which:
Phase shift block 1101, at least differential signal for the processor output to the terminal carry out phase shift, so that
There is the part offset in the differential signal of differential signal and non-phase shift after phase shift, the differential signal of the non-phase shift is described
Processor is output to the differential signal of the display screen drive module of the terminal；
Output module 1102, for the differential signal after phase shift to be output to the impedance matching circuit of the terminal；
Processing module 1103 carries out impedance for the differential signal to the impedance matching circuit for being output to the terminal
Match, and the differential signal after impedance matching is output to the ground of the display screen of the terminal.
Optionally, as shown in figure 12, the phase shift block 1101, comprising:
Submodule 11011 is determined, for determining an at least differential signal needs from the emulation data tested in advance
The target phase of phase shift；
Phase shift submodule 11012, for an at least differential signal to be carried out phase shift to the target phase.
Optionally, as shown in figure 13, the determining submodule 11011, comprising:
Acquiring unit 110111, for obtaining the working frequency of antenna；
Determination unit 110112, for from the emulation data tested in advance, determining an at least differential signal in institute
State the target phase that phase shift is needed under working frequency.
Optionally, the phase shift block 1101, is used for: moving to each differential signal of processor output
Phase.
Optionally, the differential signal is MIPI differential signal.
Terminal 1100 is able to achieve each process that terminal is realized in above method embodiment, to avoid repeating, here no longer
It repeats.
The terminal 1100 of the embodiment of the present invention moves an at least differential signal for the processor output of the terminal
Phase, so that the differential signal of differential signal and non-phase shift after phase shift has the part offset, the difference letter of the non-phase shift
Number for the processor be output to the terminal display screen drive module differential signal；Differential signal after phase shift is defeated
The impedance matching circuit of the terminal is arrived out；Impedance is carried out to the differential signal for the impedance matching circuit for being output to the terminal
Match, and the differential signal after impedance matching is output to the ground of the display screen of the terminal.In this way, the difference after phase shift is believed
Number there can be the part offset with the differential signal of non-phase shift, to reduce some other in the Difference signal pair terminal of non-phase shift
The influence of component.
Referring to Figure 14, a kind of hardware structural diagram of Figure 14 terminal of each embodiment to realize the present invention, the terminal
1400 include but is not limited to: radio frequency unit 1401, network module 1402, audio output unit 1403, input unit 1404, sensing
Device 1405, display unit 1406, user input unit 1407, interface unit 1408, memory 1409, processor 1410 and
The components such as power supply 1411.It will be understood by those skilled in the art that the limit of the not structure paired terminal of terminal structure shown in Figure 14
Fixed, terminal may include perhaps combining certain components or different component layouts than illustrating more or fewer components.?
In the embodiment of the present invention, terminal include but is not limited to mobile phone, tablet computer, laptop, palm PC, car-mounted terminal, can
Wearable device and pedometer etc..
Wherein, processor 1410, at least differential signal for controlling the processor output to the terminal move
Phase, so that the differential signal of differential signal and non-phase shift after phase shift has the part offset, the difference letter of the non-phase shift
Number for the processor be output to the terminal display screen drive module differential signal；Differential signal after phase shift is defeated
The impedance matching circuit of the terminal is arrived out；Impedance is carried out to the differential signal for the impedance matching circuit for being output to the terminal
Match, and the differential signal after impedance matching is output to the ground of the display screen of the terminal.In this way, the difference after phase shift is believed
Number there can be the part offset with the differential signal of non-phase shift, to reduce some other in the Difference signal pair terminal of non-phase shift
The influence of component.
Optionally, processor 1410 are also used to determine an at least differential signal from the emulation data tested in advance
Need the target phase of phase shift；An at least differential signal is carried out phase shift to the target phase by control.
Optionally, processor 1410 are also used to obtain the working frequency of antenna；From the emulation data tested in advance, really
A fixed at least differential signal needs the target phase of phase shift at the operating frequencies.
Optionally, processor 1410 are also used to control each differential signal exported to the processor and carry out phase shift.
Optionally, the differential signal is MIPI differential signal.
It should be understood that the embodiment of the present invention in, radio frequency unit 1401 can be used for receiving and sending messages or communication process in, signal
Send and receive, specifically, by from base station downlink data receive after, to processor 1410 handle；In addition, by uplink
Data are sent to base station.In general, radio frequency unit 1401 includes but is not limited to antenna, at least one amplifier, transceiver, coupling
Device, low-noise amplifier, duplexer etc..In addition, radio frequency unit 1401 can also by wireless communication system and network and other
Equipment communication.
Terminal provides wireless broadband internet by network module 1402 for user and accesses, and such as user is helped to receive and dispatch electricity
Sub- mail, browsing webpage and access streaming video etc..
Audio output unit 1403 can be received by radio frequency unit 1401 or network module 1402 or in memory
The audio data stored in 1409 is converted into audio signal and exports to be sound.Moreover, audio output unit 1403 can be with
Audio output relevant to the specific function that terminal 1400 executes is provided (for example, call signal receives sound, message sink sound
Etc.).Audio output unit 1403 includes loudspeaker, buzzer and receiver etc..
Input unit 1404 is for receiving audio or video signal.Input unit 1404 may include graphics processor
(Graphics Processing Unit, GPU) 14041 and microphone 14042, graphics processor 14041 are captured in video
In mode or image capture mode by image capture apparatus (such as camera) obtain static images or video image data into
Row processing.Treated, and picture frame may be displayed on display unit 1406.Through treated the picture frame of graphics processor 14041
It can store in memory 1409 (or other storage mediums) or carried out via radio frequency unit 1401 or network module 1402
It sends.Microphone 14042 can receive sound, and can be audio data by such acoustic processing.Audio that treated
Data can be converted to the lattice that mobile communication base station can be sent to via radio frequency unit 1401 in the case where telephone calling model
Formula output.
Terminal 1400 further includes at least one sensor 1405, such as optical sensor, motion sensor and other sensings
Device.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment light
The light and shade of line adjusts the brightness of display panel 14061, and proximity sensor can close display when terminal 1400 is moved in one's ear
Panel 14061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect (generally three in all directions
Axis) acceleration size, can detect that size and the direction of gravity when static, can be used to identify terminal posture (such as horizontal/vertical screen
Switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.；Sensor 1405
It can also include fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, hygrometer, temperature
Meter, infrared sensor etc. are spent, details are not described herein.
Display unit 1406 is for showing information input by user or being supplied to the information of user.Display unit 1406 can
Including display panel 14061, liquid crystal display (Liquid Crystal Display, LCD), organic light-emitting diodes can be used
Forms such as (Organic Light-Emitting Diode, OLED) are managed to configure display panel 14061.
User input unit 1407 can be used for receiving the number or character information of input, and generates and set with the user of terminal
It sets and the related key signals of function control inputs.Specifically, user input unit 1407 include touch panel 14071 and its
His input equipment 14072.Touch panel 14071, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 14071 or in touch panel
Operation near 14071).Touch panel 14071 may include both touch detecting apparatus and touch controller.Wherein, it touches
The touch orientation of detection device detection user is touched, and detects touch operation bring signal, transmits a signal to touch controller；
Touch controller receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives processor 1410,
It receives the order that processor 1410 is sent and is executed.Furthermore, it is possible to using resistance-type, condenser type, infrared ray and surface
The multiple types such as sound wave realize touch panel 14071.In addition to touch panel 14071, user input unit 1407 can also include
Other input equipments 14072.Specifically, other input equipments 14072 can include but is not limited to physical keyboard, function key (ratio
Such as volume control button, switch key), trace ball, mouse, operating stick, details are not described herein.
Further, touch panel 14071 can be covered on display panel 14061, when touch panel 14071 detects
After touch operation on or near it, processor 1410 is sent to determine the type of touch event, is followed by subsequent processing device 1410
Corresponding visual output is provided on display panel 14061 according to the type of touch event.Although in Figure 14, touch panel
14071 and display panel 14061 are the functions that outputs and inputs of realizing terminal as two independent components, but certain
In embodiment, touch panel 14071 and display panel 14061 can be integrated and be realized the function that outputs and inputs of terminal, tool
Body is herein without limitation.
Interface unit 1408 is the interface that external device (ED) is connect with terminal 1400.For example, external device (ED) may include wired
Or wireless head-band earphone port, external power supply (or battery charger) port, wired or wireless data port, storage card end
Mouth, port, the port audio input/output (I/O), video i/o port, earphone end for connecting the device with identification module
Mouthful etc..Interface unit 1408 can be used for receiving the input (for example, data information, electric power etc.) from external device (ED) and
By one or more elements that the input received is transferred in terminal 1400 or can be used in terminal 1400 and external dress
Data are transmitted between setting.
Memory 1409 can be used for storing software program and various data.Memory 1409 can mainly include storage program
Area and storage data area, wherein storing program area can application program needed for storage program area, at least one function (such as
Sound-playing function, image player function etc.) etc.；Storage data area, which can be stored, uses created data (ratio according to mobile phone
Such as audio data, phone directory) etc..In addition, memory 1409 may include high-speed random access memory, it can also include non-
Volatile memory, for example, at least a disk memory, flush memory device or other volatile solid-state parts.
Processor 1410 is the control centre of terminal, using the various pieces of various interfaces and the entire terminal of connection,
By running or execute the software program and/or module that are stored in memory 1409, and calls and be stored in memory 1409
Interior data execute the various functions and processing data of terminal, to carry out integral monitoring to terminal.Processor 1410 may include
One or more processing units；Preferably, processor 1410 can integrate application processor and modem processor, wherein answer
With the main processing operation system of processor, user interface and application program etc., modem processor mainly handles wireless communication.
It is understood that above-mentioned modem processor can not also be integrated into processor 1410.
Terminal 1400 can also include the power supply 1411 (such as battery) powered to all parts, it is preferred that power supply 1411
Can be logically contiguous by power-supply management system and processor 1410, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
In addition, terminal 1400 includes some unshowned functional modules, details are not described herein.
Preferably, the embodiment of the present invention also provides a kind of terminal, including processor 1410, and memory 1409 is stored in
On reservoir 1409 and the computer program that can run on the processor 1410, the computer program are executed by processor 1410
Each process of the above-mentioned signal processing method embodiment of Shi Shixian, and identical technical effect can be reached, to avoid repeating, here
It repeats no more.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, the computer program realize each process of above-mentioned signal processing method embodiment, and energy when being executed by processor
Reach identical technical effect, to avoid repeating, which is not described herein again.Wherein, the computer readable storage medium, such as only
Read memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation
RAM), magnetic or disk etc..
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (14)
1. a kind of signal processing circuit is applied to terminal, which is characterized in that the signal processing circuit includes phase shifter and impedance
Match circuit, in which:
The phase shifter is electric with the differential signal outputs of the processor in the terminal, phase shifting control end and impedance matching respectively
Road connection, for carrying out phase shift to the differential signal, and will under the control for the control signal that the phase shifting control end is sent
Differential signal after phase shift is output to the impedance matching circuit；
The impedance matching circuit is connect with the ground of the display screen of the terminal, for hindering the differential signal after phase shift
Anti- matching, and the differential signal after impedance matching is output to the ground of display screen.
2. signal processing circuit according to claim 1, which is characterized in that the terminal has circuit board, the processing
Device is connect by the circuit board with the display screen, and the impedance matching circuit is set on the circuit board.
3. signal processing circuit according to claim 1 or 2, which is characterized in that the differential signal is mobile Enterprise Administration Office
Manage device interface MIPI differential signal.
4. a kind of terminal, which is characterized in that including signal processing circuit described in any one of claims 1 to 3.
5. a kind of signal processing method, it is applied to terminal, which is characterized in that the signal processing method includes:
Phase shift is carried out to an at least differential signal for the processor of terminal output so that the differential signal after phase shift with not
There is the part offset in the differential signal of phase shift, the differential signal of the non-phase shift is that the processor is output to the terminal
The differential signal of display screen drive module；
Differential signal after phase shift is output to the impedance matching circuit of the terminal；
Impedance matching carried out to the differential signal of the impedance matching circuit for being output to the terminal, and by the difference after impedance matching
Sub-signal is output to the ground of the display screen of the terminal.
6. signal processing method according to claim 5, which is characterized in that the processor output to the terminal
An at least differential signal carries out phase shift, comprising:
Determine that an at least differential signal needs the target phase of phase shift from the emulation data tested in advance；
An at least differential signal is subjected to phase shift to the target phase.
7. signal processing method according to claim 6, which is characterized in that described true from the emulation data tested in advance
A fixed at least differential signal needs the target phase of phase shift, comprising:
Obtain the working frequency of antenna；
From the emulation data tested in advance, determine that an at least differential signal needs the mesh of phase shift at the operating frequencies
Mark phase.
8. signal processing method according to claim 5, which is characterized in that the processor output to the terminal
An at least differential signal carries out phase shift, comprising:
Phase shift is carried out to each differential signal of processor output.
9. the signal processing method according to any one of claim 5 to 8, which is characterized in that the differential signal is
MIPI differential signal.
10. a kind of terminal, which is characterized in that the terminal includes:
Phase shift block, at least differential signal for the processor output to the terminal carries out phase shift, so that after phase shift
Differential signal and the differential signal of non-phase shift there is the part offset, the differential signal of the non-phase shift is that the processor is defeated
The differential signal of the display screen drive module of the terminal is arrived out；
Output module, for the differential signal after phase shift to be output to the impedance matching circuit of the terminal；
Processing module carries out impedance matching for the differential signal to the impedance matching circuit for being output to the terminal, and will resistance
Differential signal after anti-matching is output to the ground of the display screen of the terminal.
11. terminal according to claim 10, which is characterized in that the phase shift block, comprising:
Submodule is determined, for determining that an at least differential signal needs the target of phase shift from the emulation data tested in advance
Phase；
Phase shift submodule, for an at least differential signal to be carried out phase shift to the target phase.
12. terminal according to claim 11, which is characterized in that the determining submodule, comprising:
Acquiring unit, for obtaining the working frequency of antenna；
Determination unit, for from the emulation data tested in advance, determining an at least differential signal in the working frequency
The lower target phase for needing phase shift.
13. terminal according to claim 10, which is characterized in that the phase shift block is used for: being exported to the processor
Each differential signal carry out phase shift.
14. terminal described in any one of 0 to 13 according to claim 1, which is characterized in that the differential signal is MIPI difference
Signal.
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| CN201811346403.6A CN109508311B (en) | 2018-11-13 | 2018-11-13 | Signal processing circuit, terminal and signal processing method |
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