CN102983868A - Signal processing method and signal processing device and signal processing system - Google Patents
Signal processing method and signal processing device and signal processing system Download PDFInfo
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- CN102983868A CN102983868A CN2012104349173A CN201210434917A CN102983868A CN 102983868 A CN102983868 A CN 102983868A CN 2012104349173 A CN2012104349173 A CN 2012104349173A CN 201210434917 A CN201210434917 A CN 201210434917A CN 102983868 A CN102983868 A CN 102983868A
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Abstract
The invention provides a signal processing method, a signal processing device and a signal processing system. The signal processing method, the signal processing device and the signal processing system include that a headphone can send digital audio signals to a mobile terminal, and the mobile terminal can also send the digital audio signals to the headphone. Since the signals transmitted between the headphone and the mobile terminal are digital signals, the opportunities that noise enters signals of global system for mobile communications (GSM) are greatly reduced, and the probability of occurrence of the noise on a telecommunications device for the deaf (TDD) is reduced. Meanwhile, without the need of arranging an electromagnetic interference device (EMI) on a main board of the mobile terminal, the area occupied by the layout of a printed circuit board (PCB) can be reduced, and the arrangement complexity of the PCB is lowered; and the PCB does not need to be protected strictly in the arrangement process so that the arrangement difficulty of the PCB can be lowered.
Description
Technical field
The present invention relates to the communications field, relate in particular to signal processing method, Apparatus and system.
Background technology
Time-division distortion (TDD, Time Division Distortion) noise (noise) is a kind of common portable terminal noise.The reason of its generation is, power amplifier (PowerAmplify) at the mobile terminal radio frequency transmitter module is held with per 1/216.8 second, the frequency that is 216.8Hz is launched global system for mobile communications (GSM) signal when (service band of GSM signal can comprise 900MHz, 1800MHz or 1900MHz), can produce envelope (envelope) noise.Because the auditory frequency range of people's ear is 20Hz ~ 20KHz, and PA when emission produce envelope (envelope) noise be 216.8Hz, the frequency of this noise has dropped on the scope that people's ear can be heard, therefore the words that the middle circuit of earphone that connects when portable terminal allows noise have an opportunity to scurry into because design is bad, just can hear drone noise at the earphone end, this noise is TDDnoise.
Audio signal transmission between portable terminal and the earphone that portable terminal is connected is divided into the uplink transmission and downlink transmits two kinds from signal path.The uplink transmission refers to that voice are converted into the signal of telecommunication at earphone Mike end, and this signal of telecommunication arrives the decoder (codec) of system end (portable terminal) through path; The downlink transmission is just in time opposite, refers to audio analog signals from the decoder of system end, arrives the left and right acoustic channels of earphone through path.
The audio signal of traditional up-downgoing path transmission all is analog signal; the method that analog signal is eliminated TDDnoise generally is as shown in Figure 1; add on the line proprietary electromagnetic interference (EMI) protection component; and add on the line low-capacitance electric capacity; its principle is the on the line interference of filtering GSM signal; make its interference signal can not arrive earphone, people's ear just can not heard TDD noise yet.
When adopting said method to eliminate TDD noise; need to when printed circuit board (PCB) (PCB) layout (layout), carry out strict protection; general using ground DNA mitochondrial DNA isolation audio signal; namely all to there be up and down ground wire to surround in audio signal; concrete layout schematic diagram can be as shown in Figure 2; wherein ground wire represents with blank box; L channel uses the frame table with the left-hand oblique line to show; R channel uses the frame table with the dextrad oblique line to show; Mike is just using the frame table with vertical oblique line to show, Mike is negative to use the frame table with horizontal oblique line to show.
There is following problem at least in said method when eliminating TDD noise:
The EMI device (comprise the EMI protection component (as; EMI filter) and low-capacitance electric capacity) radiofrequency signal on can't the whole circuit of filtering disturbs (envelope noise); for example the EMI device is to this section of system end circuit in the uplink transmission, and the EMI device all can't filtering to the radiofrequency signal interference of this section circuit between the earphone in the downlink transmission.
And owing to need to increase on the line EMI protection component and low-capacitance electric capacity, so that components and parts are more on the circuit, the area that the PCB layout takies is larger, and layout is complicated.Simultaneously, because strict protection need to be carried out, also can increase PCB layout difficulty when the PCB layout.
Summary of the invention
The embodiment of the invention provides signal processing method, Apparatus and system, is used for improving the reliability of TDD noise filtering, and reduces PCB layout difficulty and complexity.
A kind of earphone, described earphone comprises microphone module, signal conversion module and earphone interface, wherein:
Described microphone module is used for collected sound signal, and the voice signal that collects is converted to simulated audio signal;
Described signal conversion module, the simulated audio signal that is used for described microphone module is converted to is converted to digital audio and video signals, and will be converted to simulated audio signal from the digital audio and video signals that portable terminal receives;
Described earphone interface comprises electric source line interface, interface of the ground wire, and interface clock signal and data line interface, wherein:
Described electric source line interface is used for receiving the power supply signal that described portable terminal provides;
Described interface of the ground wire is used for being connected with the ground wire that described portable terminal provides;
Described interface clock signal is used for receiving the clock signal that described portable terminal provides;
Described data line interface is used for receiving the digital audio and video signals that described portable terminal provides, and sends digital audio and video signals to described portable terminal.
A kind of portable terminal, described portable terminal comprise processor and earpiece holes interface, wherein;
Described processor comprises the clock signal determination module, is used for determining clock signal;
Holding wire by being used for the transmission power supply signal between described processor and the described earpiece holes interface, the holding wire connection that is used for holding wire, the holding wire that is used for the transmission of digital audio signal that is connected with ground wire and is used for transmitting the clock signal that described clock signal determination module determines;
Described earpiece holes interface comprises electric source line interface, interface of the ground wire, and data line interface and interface clock signal, wherein:
Described electric source line interface is used for providing power supply signal to earphone;
Described interface of the ground wire is used for being connected with the ground wire that described portable terminal provides;
Described data line interface is used for receiving the digital audio and video signals that described earphone provides, and sends digital audio and video signals to described earphone;
Described interface clock signal is used for providing clock signal to described earphone.
A kind of signal processing method, described method comprises:
Simulated audio signal is converted to digital audio and video signals, and described simulated audio signal is that the voice signal that this locality collects is changed acquisition;
According to predetermined synchronizing frequency described digital audio and video signals is sent to portable terminal.
A kind of signal processing method, described method comprises:
Receive the digital audio and video signals that earphone sends according to predetermined synchronizing frequency;
Described digital audio and video signals is processed.
A kind of signal processing apparatus, described device comprises:
Modular converter is used for simulated audio signal is converted to digital audio and video signals, and described simulated audio signal is that the voice signal that this locality collects is changed acquisition;
Sending module is used for according to predetermined synchronizing frequency described digital audio and video signals being sent to portable terminal.
A kind of signal processing apparatus, described device comprises:
Receiver module is used for receiving the digital audio and video signals that earphone sends according to predetermined synchronizing frequency;
Processing module is used for the digital audio and video signals that receiver module receives is processed.
A kind of signal processing system, described system comprises portable terminal and earphone, wherein:
Described earphone is used for simulated audio signal is converted to digital audio and video signals, and described simulated audio signal is that the voice signal that described earphone collects is changed acquisition; And according to predetermined synchronizing frequency described digital audio and video signals is sent to described portable terminal;
Described portable terminal is used for receiving the digital audio and video signals that described earphone sends according to predetermined synchronizing frequency, and described digital audio and video signals is processed.
A kind of signal processing method, described method comprises:
Digital audio and video signals according to predetermined receive frequency mobile terminal receive transmission;
The digital audio and video signals that the described portable terminal that receives is sent is converted to simulated audio signal;
The simulated audio signal that obtains after the output conversion is to the user.
A kind of signal processing method, described method comprises:
Determine transmission frequency according to descending clock signal;
Send digital audio and video signals according to described transmission frequency to earphone.
A kind of signal processing apparatus, described device comprises:
Receiver module is used for the digital audio and video signals that sends according to predetermined receive frequency mobile terminal receive;
Modular converter, the digital audio and video signals that the described portable terminal that is used for receiving sends is converted to simulated audio signal;
Output module is used for exporting the simulated audio signal that obtains after the described modular converter conversion to the user.
A kind of signal processing apparatus, described device comprises:
Determination module is used for determining transmission frequency according to descending clock signal;
Sending module is used for sending digital audio and video signals according to described transmission frequency to earphone.
A kind of signal processing system, described system comprises portable terminal and earphone, wherein:
Described earphone is used for receiving the digital audio and video signals that described portable terminal sends according to predetermined receive frequency; The digital audio and video signals that the described portable terminal that receives is sent is converted to simulated audio signal; The simulated audio signal that obtains after the output conversion is to the user;
Described portable terminal is used for determining transmission frequency according to descending clock signal; Send digital audio and video signals according to described transmission frequency to described earphone.
According to the scheme that the embodiment of the invention provides, earphone can send digital audio and video signals to portable terminal, and portable terminal also can send digital audio and video signals to described earphone.Because the signal that transmits between earphone and the portable terminal is digital signal, therefore, can greatly reduce the chance that noise is scurried into the GSM signal, reduce the probability that TDD noise occurs.Simultaneously, owing to need not layout EMI device on Mobile terminal main board, can reduce the area that the PCB layout takies, reduce PCB layout complexity, and, also need not when the PCB layout, to carry out strict protection, therefore can also reduce PCB layout difficulty.
Description of drawings
The design schematic diagram that Fig. 1 provides for prior art;
The PCB schematic layout pattern that Fig. 2 provides for prior art;
The structural representation of the earphone that Fig. 3 provides for the embodiment of the invention one;
The structural representation of the portable terminal that Fig. 4 provides for the embodiment of the invention two;
The processor that Fig. 5 provides for the embodiment of the invention two and the connection diagram of earpiece holes interface;
The flow chart of steps of the signal processing method that Fig. 6 provides for the embodiment of the invention three;
The flow chart of steps of the signal processing method that Fig. 7 provides for the embodiment of the invention four;
The flow chart of steps of the signal processing method that Fig. 8 provides for the embodiment of the invention five;
The flow chart of steps of the signal processing method that Fig. 9 provides for the embodiment of the invention six;
The communication scheme that Figure 10 provides for the embodiment of the invention seven;
The signal transmission schematic diagram that Figure 11 provides for the embodiment of the invention seven;
The signal transmission schematic diagram that Figure 12 provides for the embodiment of the invention seven;
The structural representation of the signal processing apparatus that Figure 13 provides for the embodiment of the invention eight;
The structural representation of the signal processing apparatus that Figure 14 provides for the embodiment of the invention nine;
The structural representation of the signal processing system that Figure 15 provides for the embodiment of the invention ten;
The structural representation of the signal processing apparatus that Figure 16 provides for the embodiment of the invention 11;
The structural representation of the signal processing apparatus that Figure 17 provides for the embodiment of the invention 12;
The structural representation of the signal processing system that Figure 18 provides for the embodiment of the invention 13.
Embodiment
In order to eliminate the TDD noise in the earphone signal, because the digital signal antijamming capability is stronger, therefore, in various embodiments of the present invention, propose, can be in transmission of digital audio signal between portable terminal and the earphone that this portable terminal is connected, thereby so that utilize earphone when conversation, with respect to prior art, can reduce the probability that TDDnoise occurs, improve the reliability that TDD noise eliminates, simultaneously, can also reduce the design difficulty of Mobile terminal main board.
Below by Figure of description and each embodiment the present invention program is described.
Embodiment one,
The embodiment of the invention one provides a kind of earphone, and the structure of this earphone can comprise microphone module 11, signal conversion module 12 and earphone interface 13 as shown in Figure 3, wherein:
Described microphone module 11 is used for collected sound signal, and the voice signal that collects is converted to simulated audio signal;
The simulated audio signal that described signal conversion module 12 is used for described microphone module is converted to is converted to digital audio and video signals, and will be converted to simulated audio signal from the digital audio and video signals that portable terminal receives;
Described earphone interface 13 comprises electric source line interface, interface of the ground wire, and interface clock signal and data line interface, wherein:
Described electric source line interface is used for receiving the power supply signal that described portable terminal provides;
Described interface of the ground wire is used for being connected with the ground wire that described portable terminal provides;
Described interface clock signal is used for receiving the clock signal that described portable terminal provides;
Described data line interface is used for receiving the digital audio and video signals that described portable terminal provides, and sends digital audio and video signals to described portable terminal.
Preferably, described data line interface can comprise upstream data line interface and downlink data line interface, wherein:
Described upstream data line interface is used for sending digital audio and video signals to described portable terminal; Described downlink data line interface is used for receiving the digital audio and video signals that described portable terminal provides.
Described interface clock signal can comprise up interface clock signal and descending interface clock signal, wherein:
Described up interface clock signal is used for receiving the up clock signal that described portable terminal sends; Described descending interface clock signal is used for receiving the descending clock signal that described portable terminal sends.
Embodiment two,
The embodiment of the invention two provides a kind of portable terminal, and the structure of this portable terminal can as shown in Figure 4, comprise processor 21 and earpiece holes interface 22, wherein;
Described processor 21 comprises the clock signal determination module, is used for determining clock signal; Herein, processor 21 can be understood as and comprises in the present portable terminal set of each functional module except the earpiece holes interface.
Holding wire by being used for the transmission power supply signal between described processor 21 and the described earpiece holes interface 22, the holding wire connection that is used for holding wire, the holding wire that is used for the transmission of digital audio signal that is connected with ground wire and is used for transmitting the clock signal that described clock signal determination module determines;
Described earpiece holes interface 22 comprises electric source line interface, interface of the ground wire, and data line interface and interface clock signal, wherein:
Described electric source line interface is used for providing power supply signal to earphone;
Described interface of the ground wire is used for being connected with the ground wire that described portable terminal provides;
Described data line interface is used for receiving the digital audio and video signals that described earphone provides, and sends digital audio and video signals to described earphone;
Described interface clock signal is used for providing clock signal to described earphone.
Concrete, as shown in Figure 5, can pass through for the holding wire that transmits power supply signal, for the holding wire that is connected with ground wire between described processor 21 and the described earpiece holes interface 22, be used for to the holding wire (transmission of downlink signal) of earphone transmission digital audio and video signals, the holding wire (transmission upward signal) that is used for the digital audio and video signals of reception earphone transmission, be used for transmitting the holding wire of the up clock signal that described clock signal determination module determines, and the holding wire that is used for transmitting the descending clock signal that described clock signal determination module determines connects.
Then, preferably, described data line interface can comprise upstream data line interface and downlink data line interface, wherein:
Described upstream data line interface is used for receiving the digital audio and video signals that described earphone provides; Described downlink data line interface is used for sending digital audio and video signals to described earphone.
Described interface clock signal can comprise up interface clock signal and descending interface clock signal, wherein:
Described up interface clock signal is used for sending up clock signal to described earphone; Described descending interface clock signal is used for sending descending clock signal to described earphone.
With the embodiment of the invention one and embodiment two based on same inventive concept, following signal processing method is provided.
Embodiment three,
The embodiment of the invention three provides a kind of signal processing method, and the method can be applied to the data feedback channel transmission course between portable terminal and the earphone that portable terminal is connected, and the steps flow chart of the method can as shown in Figure 6, comprise:
In this step, earphone can collected sound signal, the voice signal that collects is converted to simulated audio signal, and the simulated audio signal that obtains is converted to digital audio and video signals, to realize follow-up digital data transmission to portable terminal.
Concrete, in this step the simulated audio signal that obtains is converted to digital audio and video signals, can be that earphone namely triggers execution after powering on, also can be when receiving the clock signal of portable terminal transmission, to trigger to carry out.
In this step, earphone can send to portable terminal with described digital audio and video signals according to predetermined synchronizing frequency.
Described synchronizing frequency can be determined in the following manner: receive the up clock signal that described portable terminal sends; According to described up clock signal, determine described synchronizing frequency.
Then more excellent, in step 101, simulated audio signal is converted to digital audio and video signals, can comprise: determine the first inversion frequency according to described up clock signal, and according to described the first inversion frequency simulated audio signal is converted to digital audio and video signals.
Concrete, the frequency of up clock signal (being synchronizing frequency) can be understood as the product that is not higher than the first inversion frequency (such as 8k) and analog-to-digital conversion (A/D converter) precision (such as 16), thereby guarantee that earphone is converted to the speed of digital audio and video signals with simulated audio signal, is higher than earphone to the speed of portable terminal transmission of digital audio signal.
Describe below by the scheme of a specific embodiment to embodiment three.
Embodiment four,
The embodiment of the invention one provides a kind of signal processing method, and the method can be applied to the data feedback channel transmission course between portable terminal and the earphone that portable terminal is connected, and the steps flow chart of the method can as shown in Figure 7, comprise:
The up clock signal that step 201, earphone mobile terminal receive send.
Before carrying out uplink, namely earphone with audio signal transmission to before the portable terminal, the up clock signal that earphone can mobile terminal receive sends.
Step 202, earphone carry out the audio signal conversion.
Because in the present embodiment, earphone is digital signal to the portable terminal transmission, and therefore, in this step, earphone need to be converted to digital audio and video signals with the simulated audio signal that collects.Concrete, earphone can be determined the first inversion frequency according to up clock signal, and according to the first inversion frequency, utilizes analog/digital converter (A/D converter) that the simulated audio signal that collects is converted to digital audio and video signals.
In addition, earphone collection simulated audio signal can be understood as earphone voice signal is converted to simulated audio signal.
In this step, to gather simulated audio signal and the simulated audio signal that collects is converted to digital audio and video signals can be to realize by digital microphone integrated in earphone to earphone.
Step 203, earphone send digital audio and video signals.
In this step, earphone can be according to the described up clock signal that receives, determine synchronizing frequency, and the digital audio and video signals that will obtain after will changing according to this synchronizing frequency sends to portable terminal, realize uplink signal transmissions, so that portable terminal can directly be processed the digital audio and video signals that receives.This processing can but be not limited to comprise, the digital audio and video signals that receives is carried out recording operation, and/or, the digital audio and video signals that receives is operated accordingly, and sends to Correspondent Node.
The scheme that provides according to embodiment three, four, because in the uplink signal transmissions process, what earphone transmitted in the whole path of portable terminal is digital audio and video signals, therefore, can greatly reduce the probability that TDD noise occurs, improve the quality of utilizing the earphone conversation.And mobile terminal side can directly obtain digital audio and video signals, so that portable terminal can also omit simulated audio signal to the conversion of digital audio and video signals.
Embodiment five,
The embodiment of the invention five provides a kind of signal processing method, and the method can be applied to the down going channel transmission course between portable terminal and the earphone that portable terminal is connected, and the steps flow chart of the method can as shown in Figure 8, comprise:
In this step, the descending clock signal that can determine according to self of portable terminal determines to send to earphone the transmission frequency of digital audio and video signals.
In this step, portable terminal can send digital audio and video signals to earphone according to the transmission frequency of determining.
Preferably, before step 302 (before the step 301 or after the step 301), described method can also comprise:
Step 301 ', send described descending clock signal to earphone.
In this step, portable terminal can send described descending clock signal to described earphone, so that described earphone is determined receive frequency according to described descending clock signal, transfer of data is synchronous between assurance earphone and the portable terminal.
Describe below by the scheme of a specific embodiment to the embodiment of the invention five.
Embodiment six,
The embodiment of the invention six provides a kind of signal processing method, and the method can be applied to the down going channel transmission course between portable terminal and the earphone that portable terminal is connected, and the steps flow chart of the method can as shown in Figure 9, comprise:
Step 401, portable terminal send descending clock signal to earphone.
When carrying out downlink transfer, namely during to earphone, portable terminal can send descending clock signal to earphone to portable terminal with audio signal transmission, thereby can utilize descending clock signal to realize down-going synchronous between earphone and the portable terminal.
Step 402, portable terminal send digital audio and video signals.
In this step, portable terminal can send digital audio and video signals to earphone, realizes the downstream signal transmission.Concrete, can determine transmission frequency according to described descending clock signal, send digital audio and video signals according to the transmission frequency of determining to described earphone, thereby guarantee can realize down-going synchronous between earphone and the portable terminal.
Preferably, present embodiment can also may further comprise the steps:
Step 403, earphone carry out the audio signal conversion.
Earphone is according to descending clock signal, determine receive frequency, and receive after the digital audio and video signals according to the receive frequency of determining, because the audio signal of earphone output is simulated audio signal, therefore, in this step, earphone need to be converted to simulated audio signal with the digital audio and video signals that receives.Concrete, earphone can be determined the second conversion speed according to descending clock signal, utilize digital/analog converter (D/A converter) that the digital audio and video signals that receives is converted to simulated audio signal, thereby further guarantee to realize down-going synchronous between earphone and the portable terminal.
Step 404, earphone output audio signal.
In this step, earphone can be exported to the user with the simulated audio signal that conversion obtains.
The scheme that provides according to embodiment five, six, because in the downstream signal transmission course, what portable terminal transmitted in the whole path of earphone is digital audio and video signals, therefore, can greatly reduce the probability that TDD noise occurs, improve the quality of utilizing the earphone conversation.
Below by a concrete example scheme that the embodiment of the invention one ~ embodiment six provides is described.
Embodiment seven,
In the present embodiment, communication scheme between earphone and the portable terminal can be as shown in figure 10, earphone can be connected with portable terminal by the earpiece holes on the portable terminal, and the holding wire that enters earphone from portable terminal can be 6, wherein two is bus, one is power line, one is ground wire, one of all the other four holding wire are used for transmitting up clock signal, one is used for earphone to the uplink signal transmissions of portable terminal, one is used for transmitting descending clock signal, and one is used for portable terminal to the downstream signal transmission of earphone.
When carrying out uplink signal transmissions, signal transmission schematic diagram can be as shown in figure 11, and earphone needs to be connected with VDD-to-VSS respectively, and the up clock signal of mobile terminal receive transmission, sends upward signal according to up clock signal to portable terminal.And in earpiece side, can utilize digital microphone to obtain digital audio and video signals.
When carrying out the downstream signal transmission, signal transmission schematic diagram can be as shown in figure 12, and earphone needs to be connected with VDD-to-VSS respectively, the descending clock signal that mobile terminal receive sends, and the digital audio and video signals of portable terminal transmission.And earpiece side can be determined conversion speed according to descending clock signal, and the digital audio and video signals that receives is converted to simulated audio signal, and output.
With the embodiment of the invention one ~ embodiment seven based on same inventive concept, following device and system is provided.
Embodiment eight,
The embodiment of the invention eight provides a kind of signal processing apparatus, and this device can be integrated in the earphone, and the structure of this device can as shown in figure 13, comprise:
Described device also comprises receiver module 33:
Described receiver module 33 is used for receiving the up clock signal that described portable terminal sends; Described sending module 32 is determined described synchronizing frequency, and according to this synchronizing frequency described digital audio and video signals is sent to portable terminal for the described up clock signal that receives according to described receiver module.
Described modular converter 31 is used for determining the first inversion frequency according to described up clock signal, and according to described the first inversion frequency simulated audio signal is converted to digital audio and video signals.
Described receiver module 33 also is used for receiving the digital audio and video signals that described portable terminal sends according to predetermined receive frequency;
The digital audio and video signals that the described portable terminal that described modular converter 31 also is used for receiving sends is converted to simulated audio signal;
Described device also comprises output module 34:
Described output module is used for exporting the simulated audio signal that obtains after the described modular converter conversion to the user.
Described receiver module 33 also is used for receiving the descending clock signal that described portable terminal sends, and according to described descending clock signal, determines described receive frequency.
Described modular converter 31 is used for determining the second inversion frequency according to described descending clock signal, and the digital audio and video signals that sends according to the described portable terminal that described the second inversion frequency will receive is converted to simulated audio signal.
Embodiment nine,
The embodiment of the invention nine provides a kind of signal processing apparatus, and this device can be integrated in the portable terminal, and the structure of this device can as shown in figure 14, comprise:
Described device also comprises sending module 43:
Sending module 43 is used for sending up clock signal to described earphone, so that described earphone is determined described synchronizing frequency according to described up clock signal.
Described sending module 43 also is used for determining transmission frequency according to descending clock signal, sends digital audio and video signals according to described transmission frequency to described earphone.
Described sending module 43 also is used for sending descending clock signal to described earphone, so that described earphone is determined receive frequency according to described descending clock signal.
Embodiment ten,
The embodiment of the invention ten provides a kind of signal processing system, and the structure of this system can comprise portable terminal 51 and earphone 52 as shown in figure 15, wherein:
Described earphone 52 is used for simulated audio signal is converted to digital audio and video signals, and described simulated audio signal is that the voice signal that described earphone collects is changed acquisition; And according to predetermined synchronizing frequency described digital audio and video signals is sent to described portable terminal;
Described portable terminal 51 is used for receiving the digital audio and video signals that described earphone sends according to predetermined synchronizing frequency, and described digital audio and video signals is processed.
Wherein, portable terminal in the present embodiment can comprise the device that embodiment nine provides, and has corresponding function, and earphone can comprise the device that embodiment eight provides, and has corresponding function, does not repeat them here.
Preferably, the present invention can also provide following device and system.
The embodiment of the invention 11 provides a kind of signal processing apparatus, and the structure of this device can as shown in figure 16, comprise:
The embodiment of the invention 12 provides a kind of signal processing apparatus, and the structure of this device can as shown in figure 17, comprise:
The embodiment of the invention 13 provides a kind of signal processing system, and the structure of this system can comprise portable terminal 81 and earphone 82 as shown in figure 18, wherein:
Described earphone 82 is used for receiving the digital audio and video signals that described portable terminal sends according to predetermined receive frequency; The digital audio and video signals that the described portable terminal that receives is sent is converted to simulated audio signal; The simulated audio signal that obtains after the output conversion is to the user;
Described portable terminal 81 is used for determining transmission frequency according to descending clock signal; Send digital audio and video signals according to described transmission frequency to described earphone.
Those skilled in the art should understand that the application's embodiment can be provided as method, system or computer program.Therefore, the application can adopt complete hardware implementation example, complete implement software example or in conjunction with the form of the embodiment of software and hardware aspect.And the application can adopt the form of the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The application is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the present application.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device producing a machine, so that the instruction of carrying out by the processor of computer or other programmable data processing device produces the device of the function that is used for being implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, so that the instruction that is stored in this computer-readable memory produces the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, so that carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction that computer or other programmable devices are carried out.
Although described the application's preferred embodiment, in a single day those skilled in the art get the basic creative concept of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the application's scope.
Obviously, those skilled in the art can carry out various changes and modification and the spirit and scope that do not break away from the application to the application.Like this, if these of the application are revised and modification belongs within the scope of the application's claim and equivalent technologies thereof, then the application also is intended to comprise these changes and modification interior.
Claims (32)
1. an earphone is characterized in that, described earphone comprises microphone module, signal conversion module and earphone interface, wherein:
Described microphone module is used for collected sound signal, and the voice signal that collects is converted to simulated audio signal;
Described signal conversion module, the simulated audio signal that is used for described microphone module is converted to is converted to digital audio and video signals, and will be converted to simulated audio signal from the digital audio and video signals that portable terminal receives;
Described earphone interface comprises electric source line interface, interface of the ground wire, and interface clock signal and data line interface, wherein:
Described electric source line interface is used for receiving the power supply signal that described portable terminal provides;
Described interface of the ground wire is used for being connected with the ground wire that described portable terminal provides;
Described interface clock signal is used for receiving the clock signal that described portable terminal provides;
Described data line interface is used for receiving the digital audio and video signals that described portable terminal provides, and sends digital audio and video signals to described portable terminal.
2. earphone as claimed in claim 1 is characterized in that, described data line interface comprises upstream data line interface and downlink data line interface, wherein:
Described upstream data line interface is used for sending digital audio and video signals to described portable terminal;
Described downlink data line interface is used for receiving the digital audio and video signals that described portable terminal provides.
3. earphone as claimed in claim 1 or 2 is characterized in that, described interface clock signal comprises up interface clock signal and descending interface clock signal, wherein:
Described up interface clock signal is used for receiving the up clock signal that described portable terminal sends;
Described descending interface clock signal is used for receiving the descending clock signal that described portable terminal sends.
4. a portable terminal is characterized in that, described portable terminal comprises processor and earpiece holes interface, wherein;
Described processor comprises the clock signal determination module, is used for determining clock signal;
Holding wire by being used for the transmission power supply signal between described processor and the described earpiece holes interface, the holding wire connection that is used for holding wire, the holding wire that is used for the transmission of digital audio signal that is connected with ground wire and is used for transmitting the clock signal that described clock signal determination module determines;
Described earpiece holes interface comprises electric source line interface, interface of the ground wire, and data line interface and interface clock signal, wherein:
Described electric source line interface is used for providing power supply signal to earphone;
Described interface of the ground wire is used for being connected with the ground wire that described portable terminal provides;
Described data line interface is used for receiving the digital audio and video signals that described earphone provides, and sends digital audio and video signals to described earphone;
Described interface clock signal is used for providing clock signal to described earphone.
5. portable terminal as claimed in claim 4 is characterized in that, described data line interface comprises upstream data line interface and downlink data line interface, wherein:
Described upstream data line interface is used for receiving the digital audio and video signals that described earphone provides;
Described downlink data line interface is used for sending digital audio and video signals to described earphone.
6. such as claim 4 or 5 described portable terminals, it is characterized in that described interface clock signal comprises up interface clock signal and descending interface clock signal, wherein:
Described up interface clock signal is used for sending up clock signal to described earphone;
Described descending interface clock signal is used for sending descending clock signal to described earphone.
7. a signal processing method is characterized in that, described method comprises:
Simulated audio signal is converted to digital audio and video signals, and described simulated audio signal is that the voice signal that this locality collects is changed acquisition;
According to predetermined synchronizing frequency described digital audio and video signals is sent to portable terminal.
8. method as claimed in claim 7 is characterized in that, described synchronizing frequency is determined in the following manner:
Receive the up clock signal that described portable terminal sends;
According to described up clock signal, determine described synchronizing frequency.
9. method as claimed in claim 8 is characterized in that, simulated audio signal is converted to digital audio and video signals, specifically comprises:
Determine the first inversion frequency according to described up clock signal, and according to described the first inversion frequency simulated audio signal is converted to digital audio and video signals.
10. such as the arbitrary described method of claim 7 ~ 9, it is characterized in that described method also comprises:
Receive the digital audio and video signals that described portable terminal sends according to predetermined receive frequency;
The digital audio and video signals that the described portable terminal that receives is sent is converted to simulated audio signal;
The simulated audio signal that obtains after the output conversion is to the user.
11. method as claimed in claim 10 is characterized in that, described receive frequency is determined in the following manner:
Receive the descending clock signal that described portable terminal sends;
According to described descending clock signal, determine described receive frequency.
12. method as claimed in claim 11 is characterized in that, the digital audio and video signals that the described portable terminal that receives is sent is converted to simulated audio signal, specifically comprises:
Determine the second inversion frequency according to described descending clock signal, and the digital audio and video signals that sends according to the described portable terminal that described the second inversion frequency will receive is converted to simulated audio signal.
13. a signal processing method is characterized in that, described method comprises:
Receive the digital audio and video signals that earphone sends according to predetermined synchronizing frequency;
Described digital audio and video signals is processed.
14. method as claimed in claim 13 is characterized in that, described method also comprises:
Send up clock signal to described earphone, so that described earphone is determined described synchronizing frequency according to described up clock signal.
15. such as claim 13 or 14 described methods, it is characterized in that described method also comprises:
Determine transmission frequency according to descending clock signal, send digital audio and video signals according to described transmission frequency to described earphone.
16. method as claimed in claim 15 is characterized in that, described method also comprises:
Send described descending clock signal to described earphone, so that described earphone is determined receive frequency according to described descending clock signal.
17. a signal processing apparatus is characterized in that, described device comprises:
Modular converter is used for simulated audio signal is converted to digital audio and video signals, and described simulated audio signal is that the voice signal that this locality collects is changed acquisition;
Sending module is used for according to predetermined synchronizing frequency described digital audio and video signals being sent to portable terminal.
18. device as claimed in claim 17 is characterized in that, described device also comprises receiver module:
Described receiver module is used for receiving the up clock signal that described portable terminal sends;
Described sending module for the described up clock signal that receives according to described receiver module, is determined described synchronizing frequency, and according to this synchronizing frequency described digital audio and video signals is sent to portable terminal.
19. device as claimed in claim 18 is characterized in that, described modular converter is used for determining the first inversion frequency according to described up clock signal, and according to described the first inversion frequency simulated audio signal is converted to digital audio and video signals.
20. such as claim 18 or 19 described devices, it is characterized in that,
Described receiver module also is used for receiving the digital audio and video signals that described portable terminal sends according to predetermined receive frequency;
Described modular converter, the digital audio and video signals that the described portable terminal that also is used for receiving sends is converted to simulated audio signal;
Described device also comprises output module:
Described output module is used for exporting the simulated audio signal that obtains after the described modular converter conversion to the user.
21. device as claimed in claim 20 is characterized in that,
Described receiver module also is used for receiving the descending clock signal that described portable terminal sends, and according to described descending clock signal, determines described receive frequency.
22. device as claimed in claim 21 is characterized in that,
Described modular converter is used for determining the second inversion frequency according to described descending clock signal, and the digital audio and video signals that sends according to the described portable terminal that described the second inversion frequency will receive is converted to simulated audio signal.
23. a signal processing apparatus is characterized in that, described device comprises:
Receiver module is used for receiving the digital audio and video signals that earphone sends according to predetermined synchronizing frequency;
Processing module is used for the digital audio and video signals that receiver module receives is processed.
24. device as claimed in claim 23 is characterized in that, described device also comprises sending module:
Sending module is used for sending up clock signal to described earphone, so that described earphone is determined described synchronizing frequency according to described up clock signal.
25. device as claimed in claim 24 is characterized in that,
Described sending module also is used for determining transmission frequency according to descending clock signal, sends digital audio and video signals according to described transmission frequency to described earphone.
26. device as claimed in claim 25 is characterized in that,
Described sending module also is used for sending descending clock signal to described earphone, so that described earphone is determined receive frequency according to described descending clock signal.
27. a signal processing system is characterized in that described system comprises portable terminal and earphone, wherein:
Described earphone is used for simulated audio signal is converted to digital audio and video signals, and described simulated audio signal is that the voice signal that described earphone collects is changed acquisition; And according to predetermined synchronizing frequency described digital audio and video signals is sent to described portable terminal;
Described portable terminal is used for receiving the digital audio and video signals that described earphone sends according to predetermined synchronizing frequency, and described digital audio and video signals is processed.
28. a signal processing method is characterized in that, described method comprises:
Digital audio and video signals according to predetermined receive frequency mobile terminal receive transmission;
The digital audio and video signals that the described portable terminal that receives is sent is converted to simulated audio signal;
The simulated audio signal that obtains after the output conversion is to the user.
29. a signal processing method is characterized in that, described method comprises:
Determine transmission frequency according to descending clock signal;
Send digital audio and video signals according to described transmission frequency to earphone.
30. a signal processing apparatus is characterized in that, described device comprises:
Receiver module is used for the digital audio and video signals that sends according to predetermined receive frequency mobile terminal receive;
Modular converter, the digital audio and video signals that the described portable terminal that is used for receiving sends is converted to simulated audio signal;
Output module is used for exporting the simulated audio signal that obtains after the described modular converter conversion to the user.
31. a signal processing apparatus is characterized in that, described device comprises:
Determination module is used for determining transmission frequency according to descending clock signal;
Sending module is used for sending digital audio and video signals according to described transmission frequency to earphone.
32. a signal processing system is characterized in that described system comprises portable terminal and earphone, wherein:
Described earphone is used for receiving the digital audio and video signals that described portable terminal sends according to predetermined receive frequency; The digital audio and video signals that the described portable terminal that receives is sent is converted to simulated audio signal; The simulated audio signal that obtains after the output conversion is to the user;
Described portable terminal is used for determining transmission frequency according to descending clock signal; Send digital audio and video signals according to described transmission frequency to described earphone.
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