CN101287237A - Double-mode double-standby mobile phone and voice signal transmitting method for the same - Google Patents
Double-mode double-standby mobile phone and voice signal transmitting method for the same Download PDFInfo
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- CN101287237A CN101287237A CNA2008101131599A CN200810113159A CN101287237A CN 101287237 A CN101287237 A CN 101287237A CN A2008101131599 A CNA2008101131599 A CN A2008101131599A CN 200810113159 A CN200810113159 A CN 200810113159A CN 101287237 A CN101287237 A CN 101287237A
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Abstract
The invention discloses a dual-mode and dual-standby mobile phone which comprises a master system and a slave system which are respectively corresponding to two systems as well as a Bluetooth module; the master system and the slave system are connected through a PCM interface and the Bluetooth module is connected with the master system also through a PCM interface; when the slave system is online for communication and the Bluetooth function is selected, the slave system transmits voice signals through the PCM interface between the master system and the slave system to the master system and receives voice signals from the master system; the master system is used for transmitting the voice signals from the slave system to the Bluetooth module through the PCM interface between the master system and the Bluetooth module and transmitting the voice signals from the Bluetooth module and received by the PCM interface between the master system and the Bluetooth module to the slave system through the PCM interface between the master system and the slave system. The invention also discloses a method for transmitting voice signals in the dual-mode and dual-standby mobile phone. According to the dual-mode and dual-standby mobile phone and the voice signal transmitting method disclosed by the invention, the design of the circuit of the dual-mode and dual-standby mobile phone is simple.
Description
Technical field
The present invention relates to the double model double standby phone technology, be meant a kind of double model double standby phone especially and the method for transmission of speech signals in double model double standby phone.
Background technology
In electronic products such as mobile phone, Bluetooth technology has obtained general application at present.When using the mobile phone of supporting Bluetooth function, can finish call function by Bluetooth function.For example, in the double model double standby phone of supporting Bluetooth function, can finish call function by Bluetooth function.
At present, support the double model double standby phone of Bluetooth function, mainly adopt following two kinds of schemes.
A kind of is respectively to add the double model double standby phone that a bluetooth module realizes supporting Bluetooth function in master and slave two systems, as shown in Figure 1.In double model double standby phone shown in Figure 1,, converse by the bluetooth module in the main system when conversing by main system and user when selecting Bluetooth function; When by conversing from system and user when selecting Bluetooth function, converse by the bluetooth module from system.
Another kind is, uses a bluetooth module, switches being connected between connection between the master and slave system and master and slave system and the bluetooth module with electronic switch, as shown in Figure 2.In double model double standby phone shown in Figure 2, when conversing by main system and user when selecting Bluetooth function, at first connect after the switch between main system and the bluetooth module, converse by bluetooth module; When by conversing from system and user when selecting Bluetooth function, at first connect after the switch between system and bluetooth module, converse by bluetooth module; And, utilize the Mike and the receiver that are connected with main system to converse when by conversing from system and during the non-selected Bluetooth function of user, at first connecting main system and, will pass to main system from the voice signal of system then from the switch between the system.
But all there are some problems in present double model double standby phone.In first kind of double model double standby phone, owing to use two cover bluetooth modules, so the mobile phone volume of design is big, the product material is many, and in production test procedure, needs test two cover bluetooth modules, causes the production cycle long, and production cost improves.And in second kind of double model double standby phone, owing to use electronic switch to connect master and slave system and bluetooth module, and therefore, complex circuit designs, the components and parts of use are many, cause the mobile phone volume big, and cost improves.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of double model double standby phone, make that the circuit design of double model double standby phone is simple.
Another object of the present invention is to provide a kind of in double model double standby phone the method for transmission of speech signals, can the simplest enough control finish the transmission of voice signal.
In order to achieve the above object, the invention provides a kind of double model double standby phone, this double model double standby phone comprises respectively with two kinds of corresponding main systems of standard with from system; This double model double standby phone also comprises bluetooth module;
Described main system is connected by pcm interface from system with described, and described bluetooth module is connected by pcm interface with described main system;
Described from system, be used for when conversing from system and selecting Bluetooth function, voice signal is transferred to main system by main system with from the pcm interface between the system, receives the voice signal that comes from main system by main system with from the pcm interface between the system;
Described main system, be used for when conversing from system and selecting Bluetooth function, to be transferred to bluetooth module by the pcm interface between main system and the bluetooth module by main system with from the pcm interface between the system coming from of receiving, will be transferred to from system by main system with from the pcm interface between the system by the voice signal that comes from bluetooth module that the pcm interface between main system and the bluetooth module receives from the voice signal of system.
Described main system comprises the Codec module; Described main system is used for when conversing from system and selecting Bluetooth function, and control Codec module connects pcm interface between main system and the bluetooth module and main system and from the pcm interface between the system.
Described main system, be used for when conversing from system and selecting Bluetooth function, control Codec module will be transmitted to from system by main system with from the pcm interface between the system by the voice signal that comes from bluetooth module that the pcm interface between main system and the bluetooth module receives; Be used to control the Codec module and will be transmitted to bluetooth module by the pcm interface between main system and the bluetooth module by main system with from the pcm interface between the system coming from of receiving from the voice signal of system.
This double model double standby phone also comprises Mike and receiver; Described Mike is connected with described main system with receiver; Described from system, be used for conversing from system and during non-selected Bluetooth function, voice signal is transferred to main system by main system with from the pcm interface between the system, receives the voice signal that comes from main system by main system with from the pcm interface between the system; Described main system, be used for conversing from system and during non-selected Bluetooth function, to be transferred to receiver by main system with from the pcm interface between the system coming from from the voice signal of system of receiving, the voice signal that will come from Mike is transferred to from system by main system with from the pcm interface between the system.
Described main system comprises the Codec module; Described main system is used for conversing from system and during non-selected Bluetooth function, the voice signal that control Codec module will come from Mike is transmitted to from system by main system with from the pcm interface between the system; Be used to control the Codec module and will be transferred to receiver by main system with from the pcm interface between the system coming from of receiving from the voice signal of system.
This double model double standby phone also comprises Mike and receiver; Described main system comprises the Codec module, describedly comprises the Codec module from system; Described Mike and receiver by electronic switch respectively with main system in the Codec module be connected with Codec module from system;
Described main system is used for conversing and during non-selected Bluetooth function in main system, controls described electronic switch and connects being connected between the Codec module in Mike and receiver and the main system; Be used for conversing from system and during non-selected Bluetooth function, control described electronic switch and connect being connected between Mike and receiver and the Codec module from system.
Described main system is used for conversing and during non-selected Bluetooth function, the Codec module in the control main system is transferred to receiver with voice signal in main system, and the Codec module that is used for controlling main system receives the voice signal from Mike;
Described from system, be used for conversing from system and during non-selected Bluetooth function, the Codec module of control from system is transferred to receiver with voice signal, be used for controlling from the Codec module of system and receive voice signal from Mike.
In order to reach above-mentioned another purpose, the invention provides a kind of in double model double standby phone the method for transmission of speech signals, this double model double standby phone comprises respectively with two kinds of corresponding main systems of standard with from system; This double model double standby phone also comprises bluetooth module; Described main system is connected by pcm interface from system with described, and described bluetooth module is connected by pcm interface with described main system; This method comprises the steps:
Described main system is judged by conversing from system;
If main system receives the request that starts bluetooth module, then open after the bluetooth module, described main system receives the voice signal that comes from from system by main system with from the pcm interface between the system, and this voice signal is transferred to bluetooth module by the pcm interface between main system and the bluetooth module; Described main system receives the voice signal that comes from bluetooth module by the pcm interface between main system and the bluetooth module, and this voice signal is transferred to from system by main system with from the pcm interface between the system.
Described main system is transferred to bluetooth module with this voice signal by the pcm interface between main system and the bluetooth module: the Codec module in the described main system control main system is transferred to bluetooth module with voice signal by the pcm interface between main system and the bluetooth module;
Described main system is transferred to voice signal from system by main system and the pcm interface between system: the Codec module the described main system control main system is transferred to voice signal from system by main system with from the pcm interface between the system.
Described double model double standby phone comprises Mike and receiver, and described Mike is connected with described main system with receiver; Described main system is judged by conversing from system; If main system does not receive the request that starts bluetooth module, then described main system receives the voice signal that comes from from system by main system with from the pcm interface between the system, and this voice signal is passed to receiver; Described main system receives the voice signal that comes from Mike, and this voice signal is transferred to from system by main system with from the pcm interface between the system.
Described double model double standby phone comprises Mike and receiver, described Mike and receiver by electronic switch respectively with main system be connected from system;
Described main system is judged by conversing from system, if main system does not receive the request that starts bluetooth module, then describedly by Mike and receiver and from the electronic switch between the system voice signal is passed to receiver from system; Describedly receive the voice signal that comes from Mike by Mike and receiver and from the electronic switch between the system from system;
Described main system is judged by main system and is conversed, if main system does not receive the request that starts bluetooth module, then described main system is passed to receiver by the electronic switch between Mike and receiver and the main system with voice signal; Described main system receives the voice signal that comes from Mike by the electronic switch between Mike and receiver and the main system.
According to double model double standby phone provided by the invention, connect by pcm interface between the master and slave system, also connect between bluetooth module and the main system, but on the PCM path between the pcm interface, do not use control device such as electronic switch by pcm interface.Therefore, the circuit design of double model double standby phone provided by the invention is simple, reduces the mobile phone size, reduce cost, and owing on the PCM path, do not have too much electronic switch, so can guarantee that the audio frequency effect of mobile phone is better.In addition, according to double model double standby phone provided by the invention, Mike and receiver by electronic switch respectively with main system be connected from system, when the user by conversing from system and during non-selected Bluetooth function, main system control electronic switch connect Mike and receiver with from being connected between the system, at this moment, direct and Mike and receiver interactive voice signal from system, and do not need by main system and Mike and receiver interactive voice signal, therefore in this case, main system can be in sleep state, can save the power consumption of mobile phone, thereby can prolong the stand-by time of mobile phone.
Description of drawings
Figure 1 shows that the structure chart of a kind of double model double standby phone of the prior art;
Figure 2 shows that the structure chart of another kind of double model double standby phone of the prior art;
Figure 3 shows that the structure chart of double model double standby phone in an embodiment of the present invention;
Figure 4 shows that the structure chart of double model double standby phone in another execution mode of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, lift specific embodiment below, the present invention is further detailed explanation.
Figure 3 shows that the structure chart of the double model double standby phone in an embodiment of the present invention.As shown in Figure 3, double model double standby phone comprises main system and from system, master and slave system is corresponding with two kinds of standards respectively, and for example, main system is corresponding with the GSM standard, and is corresponding with the CDMA standard from system.Wherein, main system is responsible for all man-machine interface processing, just realizes the call function of a standard as a module from system.In the master and slave system, include radio-frequency module, the baseband processor that is used to carry out base band signal process, the Codec module that is used for the encoding and decoding voice signal that are used to receive and send voice signal, be used to provide the power module of power supply supply etc.
Main system and mutual by the realization of control/communication channel from system for example, realizes from the demand of system to man-machine interface.The implementation method of control/communication channel can have multiple mode, for example can realize by modes such as serial ports, USB, dual port RAMs.Main system be connected by pcm interface from system, be used for transmission of speech signals between master and slave system.
Comprise bluetooth module in the double model double standby phone shown in Figure 3, bluetooth module is connected with main system by pcm interface, can realize that by this pcm interface the voice signal between bluetooth module and the main system transmits.Also have the control access between bluetooth module and the main system, be used for the opening and closing of main system control bluetooth module.
In the double model double standby phone shown in Figure 3, Mike is connected with main system with receiver, and Mike is in the state that is connected with main system with receiver always.
When illustrating that below in conjunction with Fig. 3 the user converses under different situations, the transmission course of voice signal.
Converse and user when selecting Bluetooth function when the user selects main system, main system is opened bluetooth module, and at this moment, the user can use bluetooth earphone to converse.In this case, the transmission course of voice signal is: main system receives the voice signal that comes from network side, Codec module in the control main system is transferred to bluetooth module with this voice signal by the pcm interface between main system and the bluetooth module, by bluetooth module this voice signal is carried out being transferred to bluetooth earphone after encoding and decoding handle.Bluetooth module receives the voice signal that comes from bluetooth earphone, and bluetooth module carries out this voice signal after the encoding and decoding processing this voice signal being transferred to main system by the pcm interface between main system and the bluetooth module, is sent to network by main system.
When selecting main system, the user converses and during the non-selected Bluetooth function of user, the user uses Mike and receiver to converse, concrete processing procedure is: main system receives the voice signal that comes from network side, by the Codec module in the main system voice signal is carried out after encoding and decoding handle, the Codec module in the main system control main system is transferred to receiver with this voice signal.Mike receives the user's voice signal, and Mike is transferred to main system with this voice signal, by the Codec module voice signal is carried out being sent to network by main system after encoding and decoding handle.
More than two kinds of described users when selecting main system to converse, its processing procedure can be identical with the single mode mobile phone.
When the user selects to converse and user when selecting Bluetooth function from system, main system is opened bluetooth module, and at this moment, the user can use bluetooth earphone to converse.In this case, from system voice signal is transferred to main system by main system with from the pcm interface between the system; Main system will be transferred to bluetooth module by the pcm interface between main system and the bluetooth module by main system with from the pcm interface between the system coming from from the voice signal of system of receiving, will be transferred to from system by main system with from the pcm interface between the system by the voice signal that comes from bluetooth module that the pcm interface between main system and the bluetooth module receives; Receive the voice signal that comes from main system by main system with from the pcm interface between the system from system.The transmission course of voice signal is specially: receive the voice signal that comes from network side from system, this voice signal is transferred to main system by main system with from the pcm interface between the system, Codec module in the main system control main system connects pcm interface between main system and the bluetooth module and main system and from the pcm interface between the system, and the Codec module in the control main system will be transmitted to bluetooth module by the pcm interface between main system and the bluetooth module by main system with from the pcm interface between the system coming from from the voice signal of system of receiving, by bluetooth module this voice signal is carried out being transferred to bluetooth earphone after encoding and decoding handle.Bluetooth module receives the voice signal that comes from bluetooth earphone, bluetooth module carries out after the encoding and decoding processing to this voice signal, this voice signal is transferred to main system by the pcm interface between main system and the bluetooth module, Codec module in the main system control main system is transferred to this voice signal from system by main system with from the pcm interface between the system, by sending to network from system.
When the user selects to converse and during the non-selected Bluetooth function of user, the user can use Mike and receiver to converse from system.In this case, from system voice signal is transferred to main system by main system with from the pcm interface between the system; Main system will be transferred to receiver by main system with from the pcm interface between the system coming from from the voice signal of system of receiving, and the voice signal that will come from Mike is transferred to from system by main system with from the pcm interface between the system; Receive the voice signal that comes from main system by main system with from the pcm interface between the system from system.Concrete processing procedure in this case is: receive the voice signal that comes from network side from system, and this voice signal is transferred to main system by main system with from the pcm interface between the system, by the Codec module in the main system this voice signal is carried out after encoding and decoding handle, the Codec module in the main system control main system is transferred to receiver with this voice signal.Mike receives the user's voice signal, Mike is transferred to main system with this voice signal, by the Codec module in the main system this voice signal is carried out being transferred to from system by main system with from the pcm interface between the system, by sending to network from system after encoding and decoding handle.
In the double model double standby phone shown in Figure 3, connect by pcm interface between the master and slave system, also connect between bluetooth module and the main system, but on the PCM path between the pcm interface, do not use control device such as electronic switch by pcm interface.Therefore, the circuit design of such double model double standby phone is simple, reduces the mobile phone size, reduce cost, and owing on the PCM path, do not have too much electronic switch, so can guarantee that the audio frequency effect of mobile phone is better.
In addition, need to prove, in double model double standby phone shown in Figure 3, if remove from system and main system with from being connected between the system, remaining part then constitutes the single mode mobile phone.It can be said that brightly, the double model double standby phone that embodiment of the present invention provides is on the basis of single mode mobile phone, adopts the simplest circuit design to increase wireless communication module based on another standard, has realized double model double standby phone thus.
Figure 4 shows that the structure chart of the double model double standby phone in another execution mode of the present invention.Compare with double model double standby phone shown in Figure 3, on the annexation of Mike and receiver, change.Be specially, described Mike and receiver by electronic switch respectively with main system in the Codec module be connected with Codec module from system.
In double model double standby phone shown in Figure 4, when selecting main system, the user converses and during non-selected Bluetooth function, main system is controlled described electronic switch and is connected being connected between the Codec module in Mike and receiver and the main system, at this moment, the voice signal that Codec module in the main system control main system will come from network side is transferred to receiver, and the Codec module in the control main system receives the voice signal from Mike.
When the user selects to converse and during non-selected Bluetooth function from system, main system is controlled described electronic switch and is connected being connected between Mike and receiver and the Codec module from system, at this moment, the voice signal that will come from network side from the system's Codec module of control from system is transferred to receiver, and the Codec module of control from system receives the voice signal that comes from Mike.
In double model double standby phone shown in Figure 4, when the user by conversing from system and during non-selected Bluetooth function, main system control electronic switch connect Mike and receiver with from being connected between the system, at this moment, direct and Mike and receiver interactive voice signal from system, and do not need by main system and Mike and receiver interactive voice signal, therefore in this case, main system can be in sleep state, can save the power consumption of mobile phone, thereby can prolong the stand-by time of mobile phone.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1, a kind of double model double standby phone is characterized in that, this double model double standby phone comprises respectively with two kinds of corresponding main systems of standard with from system; This double model double standby phone also comprises bluetooth module;
Described main system is connected by pcm interface from system with described, and described bluetooth module is connected by pcm interface with described main system;
Described from system, be used for when conversing from system and selecting Bluetooth function, voice signal is transferred to main system by main system with from the pcm interface between the system, receives the voice signal that comes from main system by main system with from the pcm interface between the system;
Described main system, be used for when conversing from system and selecting Bluetooth function, to be transferred to bluetooth module by the pcm interface between main system and the bluetooth module by main system with from the pcm interface between the system coming from of receiving, will be transferred to from system by main system with from the pcm interface between the system by the voice signal that comes from bluetooth module that the pcm interface between main system and the bluetooth module receives from the voice signal of system.
2, double model double standby phone according to claim 1 is characterized in that, described main system comprises the Codec module;
Described main system is used for when conversing from system and selecting Bluetooth function, and control Codec module connects pcm interface between main system and the bluetooth module and main system and from the pcm interface between the system.
3, double model double standby phone according to claim 2 is characterized in that,
Described main system, be used for when conversing from system and selecting Bluetooth function, control Codec module will be transmitted to from system by main system with from the pcm interface between the system by the voice signal that comes from bluetooth module that the pcm interface between main system and the bluetooth module receives; Be used to control the Codec module and will be transmitted to bluetooth module by the pcm interface between main system and the bluetooth module by main system with from the pcm interface between the system coming from of receiving from the voice signal of system.
4, double model double standby phone according to claim 1 is characterized in that, this double model double standby phone also comprises Mike and receiver; Described Mike is connected with described main system with receiver;
Described from system, be used for conversing from system and during non-selected Bluetooth function, voice signal is transferred to main system by main system with from the pcm interface between the system, receives the voice signal that comes from main system by main system with from the pcm interface between the system;
Described main system, be used for conversing from system and during non-selected Bluetooth function, to be transferred to receiver by main system with from the pcm interface between the system coming from from the voice signal of system of receiving, the voice signal that will come from Mike is transferred to from system by main system with from the pcm interface between the system.
5, double model double standby phone according to claim 4 is characterized in that, described main system comprises the Codec module;
Described main system is used for conversing from system and during non-selected Bluetooth function, the voice signal that control Codec module will come from Mike is transmitted to from system by main system with from the pcm interface between the system; Be used to control the Codec module and will be transferred to receiver by main system with from the pcm interface between the system coming from of receiving from the voice signal of system.
6, double model double standby phone according to claim 1 is characterized in that, this double model double standby phone also comprises Mike and receiver; Described main system comprises the Codec module, describedly comprises the Codec module from system;
Described Mike and receiver by electronic switch respectively with main system in the Codec module be connected with Codec module from system;
Described main system is used for conversing and during non-selected Bluetooth function in main system, controls described electronic switch and connects being connected between the Codec module in Mike and receiver and the main system; Be used for conversing from system and during non-selected Bluetooth function, control described electronic switch and connect being connected between Mike and receiver and the Codec module from system.
7, double model double standby phone according to claim 6 is characterized in that,
Described main system is used for conversing and during non-selected Bluetooth function, the Codec module in the control main system is transferred to receiver with voice signal in main system, and the Codec module that is used for controlling main system receives the voice signal from Mike;
Described from system, be used for conversing from system and during non-selected Bluetooth function, the Codec module of control from system is transferred to receiver with voice signal, be used for controlling from the Codec module of system and receive voice signal from Mike.
8, a kind of in double model double standby phone the method for transmission of speech signals, it is characterized in that this double model double standby phone comprises respectively with two kinds of corresponding main systems of standard with from system; This double model double standby phone also comprises bluetooth module; Described main system is connected by pcm interface from system with described, and described bluetooth module is connected by pcm interface with described main system; This method comprises the steps:
Described main system is judged by conversing from system;
If main system receives the request that starts bluetooth module, then open after the bluetooth module, described main system receives the voice signal that comes from from system by main system with from the pcm interface between the system, and this voice signal is transferred to bluetooth module by the pcm interface between main system and the bluetooth module; Described main system receives the voice signal that comes from bluetooth module by the pcm interface between main system and the bluetooth module, and this voice signal is transferred to from system by main system with from the pcm interface between the system.
9, method according to claim 8, it is characterized in that described main system is transferred to bluetooth module with this voice signal by the pcm interface between main system and the bluetooth module and is: the Codec module in the described main system control main system is transferred to bluetooth module with voice signal by the pcm interface between main system and the bluetooth module;
Described main system is transferred to voice signal from system by main system and the pcm interface between system: the Codec module the described main system control main system is transferred to voice signal from system by main system with from the pcm interface between the system.
10, method according to claim 8 is characterized in that, described double model double standby phone comprises Mike and receiver, and described Mike is connected with described main system with receiver;
Described main system is judged by conversing from system;
If main system does not receive the request that starts bluetooth module, then described main system receives the voice signal that comes from from system by main system with from the pcm interface between the system, and this voice signal is passed to receiver; Described main system receives the voice signal that comes from Mike, and this voice signal is transferred to from system by main system with from the pcm interface between the system.
11, method according to claim 8 is characterized in that, described double model double standby phone comprises Mike and receiver, described Mike and receiver by electronic switch respectively with main system be connected from system;
Described main system is judged by conversing from system, if main system does not receive the request that starts bluetooth module, then describedly by Mike and receiver and from the electronic switch between the system voice signal is passed to receiver from system; Describedly receive the voice signal that comes from Mike by Mike and receiver and from the electronic switch between the system from system;
Described main system is judged by main system and is conversed, if main system does not receive the request that starts bluetooth module, then described main system is passed to receiver by the electronic switch between Mike and receiver and the main system with voice signal; Described main system receives the voice signal that comes from Mike by the electronic switch between Mike and receiver and the main system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006681A (en) * | 2010-11-25 | 2011-04-06 | 中兴通讯股份有限公司 | Audio frequency processing method and dual-mode digital mobile communication terminal |
| WO2011038584A1 (en) * | 2009-09-29 | 2011-04-07 | 青岛海信移动通信技术股份有限公司 | Signal processing method and related devices in multi-mode multi-standby mobile terminal |
| US9699293B2 (en) | 2014-01-09 | 2017-07-04 | Huawei Technologies Co., Ltd. | Base of cordless digital telephone set, cordless digital telephone set, and voice data transmitting method |
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2008
- 2008-05-28 CN CNA2008101131599A patent/CN101287237A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011038584A1 (en) * | 2009-09-29 | 2011-04-07 | 青岛海信移动通信技术股份有限公司 | Signal processing method and related devices in multi-mode multi-standby mobile terminal |
| CN102006681A (en) * | 2010-11-25 | 2011-04-06 | 中兴通讯股份有限公司 | Audio frequency processing method and dual-mode digital mobile communication terminal |
| WO2012068814A1 (en) * | 2010-11-25 | 2012-05-31 | 中兴通讯股份有限公司 | Audio processing method and dual-mode digital mobile communication terminal |
| US9699293B2 (en) | 2014-01-09 | 2017-07-04 | Huawei Technologies Co., Ltd. | Base of cordless digital telephone set, cordless digital telephone set, and voice data transmitting method |
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