CN101465908A - Method for Bluetooth voice talking through mobile phone and mobile phone - Google Patents
Method for Bluetooth voice talking through mobile phone and mobile phone Download PDFInfo
- Publication number
- CN101465908A CN101465908A CNA2008102048620A CN200810204862A CN101465908A CN 101465908 A CN101465908 A CN 101465908A CN A2008102048620 A CNA2008102048620 A CN A2008102048620A CN 200810204862 A CN200810204862 A CN 200810204862A CN 101465908 A CN101465908 A CN 101465908A
- Authority
- CN
- China
- Prior art keywords
- bluetooth
- mobile phone
- uart
- bluetooth module
- baseband chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a mobile phone Bluetooth voice conversation method, including the following steps: step1, adding Bluetooth function item to a multimedia menu of the mobile phone; step 2, controlling a Bluetooth module and a Bluetooth earphone to match with each other by a baseband chip through a UART port, and activating the Bluetooth earphone function; step3, opening the UART port used for communication between the baseband chip and the Bluetooth module, setting the bit rate of the UART port communication to be the top working speed, and registering the operation function of the UART port in a system driver library; step4, during the conversation of the Bluetooth, transferring the PCM audio data from the Bluetooth module to the baseband chip through the UART port at different time. The mobile phone Bluetooth voice conversation method saves PCM hardware link and enables a mobile phone platform which is provided with no PCM port or is not provided with enough PCM ports to realize Bluetooth voice conversation function.
Description
Technical field
The present invention relates to the bluetooth communicating tech, particularly on various low-end mobile phone platforms, realize the method and the mobile phone of Bluetooth voice call.
Background technology
The continuous development of personal mobile communication technology, the effect of mobile phone now is increasing, and is same, mobile phone function under people's continuous demand, also continue to strengthen.Nowadays, all become reality by mobile phone surf the Net, take pictures photography etc., and, functions such as MP3, MP4 have been integrated on the mobile phone, also all finished along with the requirement of people's amusement increases.And wherein, use bluetooth earphone to realize that call function has been the standard configuration of middle and high end mobile phone.
The function of general use bluetooth earphone conversation is based on following condition realization: first, need be on the cell phone platform of middle and high end, second, need the baseband chip chip of this cell phone platform to have linear impulsive coded modulation (Linear Pulse Code Modlation, be called for short PCM) audio interface, the speech data that is used for up-downgoing transmits alternately.
As shown in Figure 1, be the hardware signal frame diagram of prior art bluetooth conversation.It is to have illustrated the transmission course of voice flow on hardware link in the conversation.At first, system program call the coupling and associated program by universal asynchronous reception and transmitter (Universal AsynchronousReceiver/Transmitter, be called for short UART) mouthful with the control bluetooth module with mate with bluetooth earphone, after having mated, same mode activates the bluetooth earphone function.When calling or connect phone, no matter be that control command also sends to the bluetooth module end by the UART mouth, audio data stream is then with transmission alternately on the form of the PCM data flow PCM link from the hardware.Thereby realized the bluetooth conversation.
As shown in Figure 3, the voice channel switching flow schematic diagram of prior art bluetooth conversation.Before carrying out the bluetooth conversation, at first pcm audio interface and the UART serial ports to the base band end carries out initialization, according to the matched data of current bluetooth equipment respectively to the clock (CLK) of pcm interface, use SLOT (being the inner PCM data bits of bluetooth module interface) and form parameters such as (FORMAT) to carry out the setting of matching row, simultaneously, the parameters such as bit rate to the UART mouth also are configured.And the control function of pcm interface and UART interface registered in the system drive storehouse.When call voice transmits beginning alternately, start the pcm interface of base band end, the PCM data flow of needs transmission is delivered on the hardware link transmitted, realize the bluetooth conversation.
Yet, for the low-end mobile phone platform, because the restriction of the software/hardware resource of platform own generally can not realize the Bluetooth voice call function.
Summary of the invention
For overcoming the deficiency of above-mentioned prior art, the technical problem to be solved in the present invention provides a kind of method that realizes high-end Bluetooth voice call on the cell phone platform of low side.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of phone Bluetooth voice conversation method may further comprise the steps:
Step 1, under the multimedia menu of mobile phone, add the Bluetooth function menu option, and create activation and this bluetooth module that corresponding interfaces windows is used for bluetooth module and be connected with the coupling of bluetooth earphone;
Step 2, baseband chip mate by UART mouth control bluetooth module and bluetooth earphone, and activate the bluetooth earphone function;
Step 3, the UART mouth that will be used for Bluetooth communication between baseband chip and bluetooth module are opened, and the bit rate that this UART port communications is set is its workable flank speed, and the handling function of this UART mouth is registered in the system drive storehouse;
In step 4, the bluetooth conversation, timesharing uses the UART mouth that the pcm audio data are transferred to the baseband chip from bluetooth module.
The mobile phone of the method for described Bluetooth voice call comprises baseband chip, also comprises bluetooth module and bluetooth earphone, links to each other by the UART mouth between described baseband chip and bluetooth module, transmits control command and audio data stream alternately.
Described baseband chip is the GSM baseband chip 6600D chip of Spreadtrum Communications Inc.'s mobile phone, and bluetooth module is the Audio Processing chip of the BC41B143A model of CSR company.
Compared with prior art, the invention has the beneficial effects as follows:
The inventive method is to use existing low-end mobile phone platform resource, utilizes the common UART communication interface that has on the cell phone platform, and it both had been used to control the control communication line of bluetooth module, also timesharing with its multiplexing voice-grade channel of making interactive voice.So just saved the hardware link of PCM, made the function that is achieved Bluetooth voice call on the cell phone platform that does not possess pcm interface or pcm interface deficiency.
Description of drawings
Fig. 1 is the hardware signal frame diagram of prior art bluetooth conversation;
Fig. 2 is a mobile phone hardware frame diagram of the present invention;
Fig. 3 is the voice channel switching flow schematic diagram of prior art bluetooth conversation;
Fig. 4 is the inventive method bluetooth call voice passage switching flow schematic diagram.
Embodiment
Specific embodiments of the present invention are further described in detail below in conjunction with drawings and Examples, but should not limit protection scope of the present invention with this.
See also Fig. 2.The present invention is used for the mobile phone of the method for Bluetooth voice call, comprises baseband chip, also comprises bluetooth module and bluetooth earphone, links to each other by the UART mouth between described baseband chip and bluetooth module, transmits control command and audio data stream alternately.
Embodiments of the invention are to carry out on the GSM of Spreadtrum Communications Inc.'s mobile phone baseband chip 6600D chip platform, and platform software is based on the subsidiary system platform software of this 6600D platform.The Bluetooth chip that uses is the Audio Processing chip of the BC41B143A model of CSR (Cambridge Silicon Radio Limited) company.Simultaneously, if need to switch bluetooth module, as long as this bluetooth module has the High Speed UART port communications and can realize.
As shown in Figure 2, hardware signal frame diagram of the present invention.The transmission course of voice flow on hardware link during it has also illustrated to converse.At first, baseband chip mates by UART mouth control bluetooth module and bluetooth earphone, and activates the bluetooth earphone function.When calling or connect phone, no matter be control command or audio data stream, all from the UART mouth, transmit alternately, thereby realized the bluetooth conversation.
See also Fig. 4.Phone Bluetooth voice conversation method of the present invention may further comprise the steps:
Step 1, under the multimedia menu of mobile phone, add the Bluetooth function menu option, and create activation and this bluetooth module that corresponding interfaces windows is used for bluetooth module and be connected with the coupling of bluetooth earphone;
Step 2, baseband chip mate by UART mouth control bluetooth module and bluetooth earphone, and activate the bluetooth earphone function.Concrete action is: the initialization bluetooth module, search near current bluetooth equipment or the earphone that exists, from the bluetooth equipment/earphone that searches, choose the earphone that needs coupling and import passwords, passwords is sent on the bluetooth earphone by bluetooth module, accept feedack, if success, then the match is successful with bluetooth earphone;
Step 3, the UART mouth that will be used for Bluetooth communication between baseband chip and bluetooth module are opened, and the bit rate that this UART port communications is set is its workable flank speed, and the handling function of this UART mouth is registered in the system drive storehouse;
In step 4, the bluetooth conversation, timesharing uses the UART mouth that the pcm audio data are transferred to the baseband chip from bluetooth module.The transmission of Bluetooth control instruction transmission and pcm audio speech data is carried out in so-called timesharing exactly respectively at different time points.In this process, must estimate (this estimation to the amount of voice data that will transmit, at first need from the continuous broadcast of speech data and intermittently for basic, calculate the speech buffer storage amount that needs, and current message transmission rate is to calculate the quantizating index of buffer memory, in the regular hour gap, buffer memory and the unit interval ratio between can data quantity transmitted, the transmitted data amount of can rough calculation doing the estimation in the unit interval sheet of transmission data), can not make voice call have the situation of hysteresis/delay to occur, and during the instruction with regular event also will be sent normally, so just require that control needs perfect flow process control to the flow process of whole UART mouth.Such flow process at first be in front estimated data amount the basis on finish, after having known certain hour required data quantity transmitted in a moment, we can be with certain flow process control device, such as, in this programme, the mode that starts timer has been used in the control of part flow process, hold every the regular hour, with regard to the triggering system program speech data of buffer memory is read or sends, and just can send action directive a moment other time.And need to send at once and current speech data when sending when control command, current buffer memory is judged, under the situation of enough buffer memories, send instruction with regard to the provisional voice data transmission of elder generation at once, otherwise, compression is when the transmission of time speech data, at first send instruction, recovering voice transfer.
Above-mentioned the amount of voice data that will transmit is estimated, at first need from the continuous broadcast of speech data and intermittently for basic, calculate the speech buffer storage amount that needs, and current message transmission rate is to calculate the quantizating index of buffer memory, in the regular hour gap, buffer memory and the unit interval ratio between can data quantity transmitted can rough calculation be done the transmitted data amount of the estimation in the unit interval sheet of transmission data.
As shown in Figure 4, before carrying out the bluetooth module initialization, at first the UART serial ports to the base band end carries out initialization, respectively the parameters such as bit rate of UART mouth also is configured according to the matched data of current bluetooth module.And the control function of UART interface registered in the system drive storehouse, start the UART interface simultaneously, the communication of beginning control signal.When call voice transmits when beginning alternately, will the needing of timesharing the PCM data flow transmitted deliver on the hardware link of UART and transmit, realize conversation.Below further describe.
(1) control interface of cell phone platform and interface are set up
At first, under the multimedia menu of mobile phone, add the Bluetooth function menu option, and create activation and the bluetooth module that corresponding interfaces windows is used for bluetooth module and be connected with the coupling of bluetooth earphone.
(2) bluetooth module hard/software integrates;
At first, on the hardware, need on mobile phone board, be integrated into bluetooth module, and the connection of relevant communication/voice-grade channel and auxiliary circuit configuration.Bluetooth module and baseband chip pass through the UART port communications.The audio frequency of general bluetooth module and source of sound end all is through the pure audio channel transfer such as PCM on the chip, but in the cell phone platform of low side, can not all have such condition, use as voice-grade channel so the UART mouth that the present invention has used baseband chip to communicate by letter with bluetooth module is multiplexing.In addition, on software, with the relevant chip RESET of bluetooth module, activation and protocol stack transmission or the like general purpose control program module is incorporated on our the existing platform software.The interface correlation of setting up with preceding step 1, integrate on the software of the present invention based on following condition: at first the relevant general module controls program of bluetooth module is very ripe, and have versatility, just can finish and only need make the modification of application corresponding interface at the characteristic of current usage platform to the transplanting of these general module control programs; The present invention is to revise change and the configuration of bluetooth module to a PCM data receipts/interface itself to the key technology of bluetooth module control, originally changed bluetooth module into transmit reception of UART mouth and transmission from the pattern of a module hardware PCM port receipts/data from instruction, delete the function that the data relevant with pcm interface are received/sent out, to send to the baseband chip end to the UART mouth from the PCM transfer of data that bluetooth earphone receives, send on the bluetooth earphone after will finishing from the voice PCM Data Receiving that the baseband chip end sends over again.
The processing of base band end voice and the hand-off process of speech data reception/sendaisle when (3) configuration of UART mouth is with the conversation of use bluetooth.
When bluetooth module is initially talked about, at first the UART mouth of communicating by letter with bluetooth module is configured.The UART mouth that is specifically designed to Bluetooth communication is opened, and the bit rate that communication is set is its workable flank speed (is 921600 such as general platform), and the handling function of this UART mouth is registered in the system drive storehouse.Having activated at bluetooth earphone has incoming call or calls under the state of bluetooth call function, cell phone system will trigger automatically and use bluetooth earphone channel transfer voice.The voice signal that come from partner this moment comes out through base band inside, dispatched by system program and from the UART mouth, send in the bluetooth module with the form of PCM data, rather than as blue tooth voice equally be transferred to the bluetooth module from the PCM link of hardware.
void?OSUartDrv_Rx(void)
{
uint8*buf_ptr＝NULL；
uint32?rx_cnt＝0；
uint32?rx_ret＝0；
uint32?cnt＝0；
SCI_ASSERT(g_rx_out_ptr<＝RX_BUF_MAX_SIZE)；
SCI_ASSERT(g_rx_numbers<＝RX_BUF_MAX_SIZE)；
//SCI_TRACE_LOW(″OSUartDrv_Rx，num?is?％d，ptr?is％d″，g_rx_numbers，g_rx_out_ptr)；
if(g_rx_numbers>0)
{
buf_ptr＝(uint8*)&s_rx_buf[g_rx_out_ptr]；
if(g_rx_numbers>MAX_BYTES_TO_ABCSP)
{
rx_cnt＝MAX_BYTES_TO_ABCSP；
}
else
{
rx_cnt＝g_rx_numbers；
}
if(rx_cnt>(RX_BUF_MAX_SIZE-g_rx_out_ptr))
{
rx_cnt＝RX_BUF_MAX_SIZE-g_rx_out_ptr；
}
/*
//Output?Receive?data
for(cnt＝0；cnt<rx_cnt；cnt++)
{
SCI_TRACE_LOW(″[BT]RX[％d]:0x％X\r\n″，cnt，buf_ptr[cnt])；
}
*/
/*
SCI_MEMCPY((uint8*)&s_rx_test_buffer[s_rx_test_cnt]，(uint8*)buf_ptr，cnt)；
s_rx_test_cnt+＝cnt；
*/
rx_ret＝abcsp_uart_deliverbytes(&AbcspInstanceData，(char*)buf_ptr，rx_cnt)；
g_rx_out_ptr＝(g_rx_out_ptr+rx_ret)％RX_BUF_MAX_SIZE；
SCI_DisableIRQ()；
g_rx_numbers-＝rx_ret；
SCI_RestoreIRQ()；
}
else
{
//When?call?the?rx?function，but?uart?does?not?receive?anydatas，then?should
//use?the?uart?interrupt?to?call?bg_int1?again.
OSUartDrv_NeedRxData(TRUE)；
}
if(OS_IsSchedRunning()&&
(g_rx_numbers>0))
{
bg_int1()；
}
}
(4) hand-off process of the speech data I/O channel of bluetooth module;
Equally, the voice signal of this machine that receives from bluetooth earphone Mike is after bluetooth earphone is sent to the bluetooth module protocol stack on the mobile phone, after the language data process that receives changed into the PCM voice signal, no longer connect the road and export, but packaged back is transferred to the baseband chip from the UART mouth from the PCM hardware of bluetooth module.After being sent in the baseband chip, data will be sent in the gsm protocol stack handling process, and the same with the voice signal that obtains on this machine, be sent on the other side's mobile phone, thus the conversation of realization both sides voice.
LOCAL?void?OSUartDrv_EventCallBack(uint32event)
{
uint32?i＝0；
//SCI_TRACE_LOW(″OSUartDrv_EventCallBack?enent?is?Ox％x，tx_num?is％d″，event，g_tx_numbers)；
switch(event)
{
case?EVENT_WRITE_COMPLETE:
{
uint32?send_cnt＝0；
SCI_ASSERT(g_tx_out_ptr<＝TX_BUF_MAX_SIZE)；
SCI_ASSERT(g_tx_numbers<＝TX_BUF_MAX_SIZE)；
if(0＝＝g_tx_numbers)
{
UART_Tx_Int_Enable(OSUartDrv_GetUartId()，FALSE)；
}
else
{
if((g_tx_out_ptr+g_tx_numbers)<＝TX_BUF_MAX_SIZE)
{
send_cnt＝UART_WriteData(OSUartDrv_GetUartId()，
(uint8*)&s_tx_buf[g_tx_out_ptr]，
g_tx_numbers)；
}
else
{
send_cnt＝UART_WriteData(OSUartDrv_GetUartId()，
(uint8*)&s_tx_buf[g_tx_out_ptr]，
TX_BUF_MAX_SIZE-g_tx_out_ptr)；
}
g_tx_out_ptr+＝send_cnt；
if(g_tx_out_ptr>＝TX_BUF_MAX_SIZE)
g_tx_out_ptr-＝TX_BUF_MAX_SIZE；
SCI_ASSERT(g_tx_numbers>＝send_cnt)；
g_tx_numbers-＝send_cnt；
if(g_uart_timer&&(!g_uart_timer_active))
{
SCI_ChangeTimer(g_uart_timer，
uart_timer_handler，UART_WAIT_PERIOD)；
SCI_ActiveTimer(g_uart_timer)；
g_uart_timer_active＝TRUE；
}
else
{
g_uart_last_access＝TRUE；
if(NULL＝＝g_uart_timer)
{
}
}
}
}
break；
case?EVENT_DATA_TO_READ:
{
uint32?read_len＝0；
SCI_ASSERT(g_rx_in_ptr<＝RX_BUF_MAX_SIZE)；
SCI_ASSERT(g_rx_numbers<＝RX_BUF_MAX_SIZE)；
read_len＝UART_ReadData(OSUartDrv_GetUartId()，
(uint8*)&s_rx_buf[g_rx_in_ptr]，RX_BUF_MAX_SIZE-g_rx_in_ptr)；
SCI_ASSERT(read_len<＝RX_BUF_MAX_SIZE-g_rx_in_ptr)；
g_rx_in_ptr＝(g_rx_in_ptr+read_len)％RX_BUF_MAX_SIZE；
g_rx_numbers+＝read_len；
if(OS_IsSchedRunning()&&
OSUartDrv_IsNeedRxData()&&
(g_rx_numbers>0))
{
//SCI_TRACE_LOW(″OSUartDrv_EventCallBack?NOTIVE
BG，curr?time?si?％d″，SCI_GetTickCount())；
bg_int1()；
}
if(g_uart_timer&&(!g_uart_timer_active))
{
SCI_ChangeTimer(g_uart_timer，uart_timer_handler，
UART_WAIT_PERIOD)；
SCI_ActiveTimer(g_uart_timer)；
g_uart_timer_active＝TRUE；
}
else
{
g_uart_last_access＝TRUE；
if(NULL＝＝g_uart_timer)
{
SCI_TRACE_LOW(″[BT]EVENT_DATA_TO-READ:timer?handle
is?empty\r\n″)；
}
}
}
break；
case?EVENT_INIT_COMPLETE:
{
break；
}
case?EVENT_SHUTDOWN_COMPLETE:
{
break；
}
default:
{
break；
}
}
}
The present invention has effectively controlled the transmission of data flow, makes audio data transmission unobstructed, keeps the coherent of voice call not stop.The present invention has carried out reasonable configuration to the task or the resource that use, has guaranteed that the flow process in using the defeated communication process of bluetooth UART oral instructions is normal; To in the bluetooth communication process, relevant resource is carried out synchronous tracking on using simultaneously, guarantees that used resource can not grabbed and take by other system task.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present invention.
Claims (3)
1, a kind of phone Bluetooth voice conversation method is characterized in that may further comprise the steps:
Step 1, under the multimedia menu of mobile phone, add the Bluetooth function menu option, and create activation and this bluetooth module that corresponding interfaces windows is used for bluetooth module and be connected with the coupling of bluetooth earphone;
Step 2, baseband chip mate by UART mouth control bluetooth module and bluetooth earphone, and activate the bluetooth earphone function;
Step 3, the UART mouth that will be used for Bluetooth communication between baseband chip and bluetooth module are opened, and the bit rate that this UART port communications is set is its workable flank speed, and the handling function of this UART mouth is registered in the system drive storehouse;
In step 4, the bluetooth conversation, timesharing uses the UART mouth that the pcm audio data are transferred to the baseband chip from bluetooth module.
2, a kind of mobile phone that is used for the method for aforesaid right requirement 1 described Bluetooth voice call, comprise baseband chip, it is characterized in that also comprising bluetooth module and bluetooth earphone, link to each other by the UART mouth between described baseband chip and bluetooth module, transmit control command and audio data stream alternately.
3, mobile phone according to claim 2 is characterized in that described baseband chip is the GSM baseband chip 6600D chip of Spreadtrum Communications Inc.'s mobile phone, and bluetooth module is the Audio Processing chip of the BC41B143A model of CSR company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102048620A CN101465908A (en) | 2008-12-30 | 2008-12-30 | Method for Bluetooth voice talking through mobile phone and mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102048620A CN101465908A (en) | 2008-12-30 | 2008-12-30 | Method for Bluetooth voice talking through mobile phone and mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101465908A true CN101465908A (en) | 2009-06-24 |
Family
ID=40806258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102048620A Pending CN101465908A (en) | 2008-12-30 | 2008-12-30 | Method for Bluetooth voice talking through mobile phone and mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101465908A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316422A (en) * | 2010-07-06 | 2012-01-11 | 上海闻泰电子科技有限公司 | Mobile communication terminal Bluetooth local chat method |
| CN102413216A (en) * | 2011-11-18 | 2012-04-11 | 深圳市中兴移动通信有限公司 | Method and system for realizing Android intelligent mobile terminal voice communication |
-
2008
- 2008-12-30 CN CNA2008102048620A patent/CN101465908A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316422A (en) * | 2010-07-06 | 2012-01-11 | 上海闻泰电子科技有限公司 | Mobile communication terminal Bluetooth local chat method |
| CN102413216A (en) * | 2011-11-18 | 2012-04-11 | 深圳市中兴移动通信有限公司 | Method and system for realizing Android intelligent mobile terminal voice communication |
| CN102413216B (en) * | 2011-11-18 | 2015-05-13 | 努比亚技术有限公司 | Method and system for realizing Android intelligent mobile terminal voice communication |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101453516B (en) | Bluetooth MP3 playing method on mobile phone and mobile phone thereof | |
| CN101334689B (en) | Bluetooth earphone of auto-switch terminal application program | |
| CN113382397A (en) | Bluetooth connection method, equipment and system | |
| CN111601199A (en) | Wireless earphone box and system | |
| EP0974245A2 (en) | Standard-compatible, power efficient digital audio interface | |
| CN101577986A (en) | Mobile communication terminal | |
| CN115190389A (en) | Audio data transmission method and equipment applied to TWS earphone single-ear and double-ear switching | |
| CN102457618A (en) | Novel mobile communication terminal | |
| CN107005800A (en) | Transmission, method of reseptance and the device of audio file, equipment and its system | |
| CN203872357U (en) | Bluetooth intercommunication apparatus with push-to-talk (PTT) button | |
| CN103945340A (en) | Bluetooth ptt talkback system | |
| TWI589176B (en) | An embedded operating system for achieving bluetooth slave device function and the method thereof | |
| WO2020118498A1 (en) | Service control method and electronic device | |
| CN105430606A (en) | Separate terminal and control method thereof | |
| CN112740728B (en) | Bluetooth communication method and electronic equipment | |
| CN101005654A (en) | Split radio telephone hand set | |
| CN201323575Y (en) | Bluetooth headset | |
| CN101465908A (en) | Method for Bluetooth voice talking through mobile phone and mobile phone | |
| CN102332949B (en) | Compass external talker, compass voice communication system and method | |
| AU629759B2 (en) | Multiplexed synchronous/asynchronous data bus | |
| JP2004511985A (en) | Voice communication between portable communication device and external terminal | |
| CN201838321U (en) | Multimedia playing device with function of wireless talkback | |
| CN101430640A (en) | Communication terminal with USB audio card, and method for implementing USB audio card in communication terminal | |
| CN202841294U (en) | Verbal device and system | |
| WO2012122766A1 (en) | Mobile terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090624 |