CN102821189B - Wireless listening method, mobile terminal and system - Google Patents
Wireless listening method, mobile terminal and system Download PDFInfo
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- CN102821189B CN102821189B CN201110154393.8A CN201110154393A CN102821189B CN 102821189 B CN102821189 B CN 102821189B CN 201110154393 A CN201110154393 A CN 201110154393A CN 102821189 B CN102821189 B CN 102821189B
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- mobile terminal
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- earphone
- power amplifier
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Abstract
The invention provides a wireless listening method, a mobile terminal and a system. The wireless listening method includes inputting an outside initial sound signal from an earphone interface of the mobile terminal; connecting an analog switch of the mobile terminal, and allowing the initial sound signal to reversely enter the mobile terminal from the earphone interface through the analog switch; performing analog-digital conversion and digital signal processing to the initial sound signal to generate a signal to be modulated; and modulating the signal to be modulated to generate a modulated signal, and outputting the modulated signal wirelessly. The analog switch allows the input initial sound signal to reversely enter the inside of the mobile terminal, and the current initial sound signal is not different from a sound signal received by the mobile terminal through a microphone, so that analog-digital conversion and digital signal processing are performed to the initial sound signal to generate the signal to be modulated, the signal to be modulated is wirelessly output after being modulated, a special wireless receiving-sending device need not be provided for a user, and sound can be received by a pair of wireless earphones.
Description
Technical field
The present invention relates to Radio Transmission Technology, refer to especially a kind of wireless method, mobile terminal and system listened to.
Background technology
Universal along with bluetooth (Bluetooth) technology, Bluetooth function has become the standard configuration of mobile terminal, and stereo set has been arranged in pairs or groups after blue-tooth stereo earphone can realize wireless transmission, has broken away from keeping in check of wired earphone.
For the mancarried electronic aid that there is no Bluetooth function, as the digital music of various standards (mp3/mp4) player, compact disc player (CD player), broadcast receiver, apple player (ipod), domestic acoustics and television set etc., if listened to and needed to configure separately a wireless transmitter by wireless headset.
Inventor finds prior art, and there are the following problems: for the mancarried electronic aid that there is no wireless transmission function, need a wireless transmitter of configuration separately, by wireless headset, by this wireless transmitter, realized and being listened to, increased cost.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of wireless method, mobile terminal and system listened to, by adopting a mobile terminal with radio transmission-receiving function just can help user's uppick from the sound of stereo set.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of wireless method of listening to, and are applied to mobile terminal, comprising: from the earphone interface of described mobile terminal, input from outside initial voice signal; The analog switch of mobile terminal described in conducting, allows described initial voice signal by described analog switch is reverse, to enter described mobile terminal from described earphone interface; Described initial voice signal is carried out to analog-to-digital conversion and Digital Signal Processing and to generate, treat modulation signal; To the described modulation signal that generates after modulation signal is modulated, adopt wireless mode to export described modulation signal.
In described method, when described mobile terminal is during in the first mode of operation, close described analog switch; When described mobile terminal is during in the second mode of operation, analog switch described in conducting.
In described method, when described mobile terminal is during in the first mode of operation, open earphone power amplifier function; When described mobile terminal is during in the second mode of operation, close described analog switch.
In described method, when described mobile terminal is in the first mode of operation, and described earphone power amplifier function is when close, and opens audio frequency power amplifier function; When described mobile terminal is during in the second mode of operation, close audio frequency power amplifier function.
In described method, described wireless mode specifically meets the transmission means of Bluetooth protocol.
In described method, when described mobile terminal detects the earphone inserting at described earphone interface place and has signal input, be switched to described the second mode of operation; Or, while having specific keys to be triggered, be switched to described the second mode of operation on the keyboard that described mobile terminal detected.
A mobile terminal, comprising: earphone interface, for inputting from outside initial voice signal; Analog switch, for when the conducting state, allows described initial voice signal to enter described mobile terminal from described earphone interface is reverse; Signal processing unit, generates and treats modulation signal for described initial voice signal being carried out to analog-to-digital conversion and Digital Signal Processing; Modulating unit, for to the described modulation signal that generates after modulation signal is modulated, radio-cell, for adopting wireless mode to export described modulation signal.
In described mobile terminal, also comprise: pattern performance element, for when described mobile terminal is during in the first mode of operation, close described analog switch; When described mobile terminal is during in the second mode of operation, analog switch described in conducting; When described mobile terminal is during in the first mode of operation, open earphone power amplifier function; When described mobile terminal is during in the second mode of operation, close described analog switch; When described mobile terminal is in the first mode of operation, and described earphone power amplifier function is when close, and opens audio frequency power amplifier function;
When described mobile terminal is during in the second mode of operation, close audio frequency power amplifier function.
A wireless listening system, comprises stereo set, mobile terminal and wireless headset: stereo set, for exporting initial voice signal; Described mobile terminal comprises: earphone interface, for inputting outside initial voice signal; Analog switch, for when the conducting state, allows described initial voice signal to enter described mobile terminal from earphone interface is reverse; Signal processing unit, generates and treats modulation signal for described initial voice signal being carried out to analog-to-digital conversion and Digital Signal Processing; Modulating unit, for to the described modulation signal that generates after modulation signal is modulated, radio-cell, for adopting wireless mode to export described modulation signal; Wireless headset, for receiving described modulation signal by wireless mode.
In described system, described mobile terminal also comprises: pattern performance element, for when described mobile terminal is during in the first mode of operation, close described analog switch; When described mobile terminal is during in the second mode of operation, analog switch described in conducting; When described mobile terminal is during in the first mode of operation, open earphone power amplifier function; When described mobile terminal is during in the second mode of operation, close described analog switch; When described mobile terminal is in the first mode of operation, and described earphone power amplifier function is when close, and opens audio frequency power amplifier function; When described mobile terminal is during in the second mode of operation, close audio frequency power amplifier function.
The beneficial effect of technique scheme of the present invention is as follows: because analog switch allows from the outside initial voice signal of earphone interface input reverse by entering the inside of mobile terminal, the voice signal that initial voice signal now and mobile terminal receive by Mike is the same, therefore can carry out analog-to-digital conversion and Digital Signal Processing to this initial voice signal generates and treats modulation signal, treat modulation signal and modulate rear employing wireless mode output, make user without the special wireless transmitter of configuration, just can receive sound by wireless headset.
Accompanying drawing explanation
Fig. 1 is the wireless method schematic flow sheet of listening to of the embodiment of the present invention;
Fig. 2 is embodiment of the present invention mobile terminal operation principle schematic diagram;
Fig. 3 is embodiment of the present invention mobile terminal structure schematic diagram.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
In the embodiment of the present invention, adopt the mobile terminal with wireless transmission function, receive the voice signal coming from the outside, after being changed by this mobile terminal, by wireless transmission function, export.
The embodiment of the present invention provides a kind of wireless method of listening to, and as shown in Figure 1, is applied to mobile terminal, comprising:
Step 101, inputs from outside initial voice signal from the earphone interface of described mobile terminal;
Step 102, the analog switch of mobile terminal described in conducting, allows described initial voice signal by described analog switch is reverse, to enter described mobile terminal from described earphone interface;
Step 103, carries out analog-to-digital conversion and Digital Signal Processing to described initial voice signal and treats modulation signal to generate;
Step 104, to the described modulation signal that generates after modulation signal is modulated, adopts wireless mode to export described modulation signal.
The technological means that application provides, because analog switch allows from the outside initial voice signal of earphone interface input reverse by entering the inside of mobile terminal, the voice signal that initial voice signal now and mobile terminal receive by Mike is the same, therefore can carry out analog-to-digital conversion and Digital Signal Processing to this initial voice signal generates and treats modulation signal, treat modulation signal and modulate rear employing wireless mode output, make user without the special wireless transmitter of configuration, just can receive sound by wireless headset.
In preferential embodiment, when described mobile terminal is during in the first mode of operation, close described analog switch; When described mobile terminal is during in the second mode of operation, analog switch described in conducting.Wherein, the first mode of operation is earphone listen mode specifically, and the second mode of operation is wireless communication mode specifically.
When described mobile terminal is during in the first mode of operation, open earphone power amplifier function; When described mobile terminal is during in the second mode of operation, close described analog switch.
When described mobile terminal is in the first mode of operation, and described earphone power amplifier function is when close, and opens audio frequency power amplifier function; When described mobile terminal is during in the second mode of operation, close audio frequency power amplifier function.
In preferential embodiment, wireless mode specifically meets the transmission means of Bluetooth protocol.
In an application scenarios, in mobile terminal as shown in Figure 2, unit module is carried out corresponding function under different mode of operations, and wherein, the first mode of operation is earphone listen mode specifically, and the second mode of operation is wireless communication mode specifically.
Mobile terminal is when earphone listen mode, and audio frequency power amplifier closes, and earphone power amplifier is opened, and analog switch closes, now can displaying audio file and video file etc.; Workflow under this mode of operation comprises:
Step 201, Bluetooth antenna (BLUETOOTH ANT) receives modulation signal, and modulation signal enters baseband chip (Base Band) by bluetooth (BLUETOOTH) unit.
Step 202, baseband chip carries out demodulation to modulation signal, and the voice signal after demodulation is sent to the L/R OUT output interface of baseband chip.
L/R OUT output interface is connected with audio frequency power amplifier, and is connected with earphone power amplifier.
Step 203, because audio frequency power amplifier is closed, so the voice signal after demodulation arrives earphone power amplifier through L/R OUT output interface.
Step 204, earphone power amplifier is strengthened voice signal.
Step 205, strengthened voice signal arrives earphone interface, and user is by now earphone (Headphone) can uppick voice signal.
Mobile terminal is when wireless communication mode, and audio frequency power amplifier closes, and earphone power amplifier closes, and analog switch leaves; Workflow under this mode of operation comprises:
Step 301, mobile terminal is inputted from outside initial voice signal from earphone interface;
Step 302, analog switch conducting, initial voice signal enters the circuit input interface (Line in) of audio codec by analog switch, circuit input interface and an analog to digital converter (ADC, Analog-to-Digital Converter) connect.
Step 303, analog to digital converter carries out generating audio digital signal after analog-to-digital conversion to initial voice signal.
Step 304, baseband chip is processed to generate to audio digital signal and is treated modulation signal;
Step 305, treats modulation signal and modulates rear generation modulation signal, and modulation signal sends (UART, Universal Asynchronous Receiver/Transmitter) mouthful input bluetooth unit by Universal Asynchronous Receiver &.
Step 306, bluetooth unit carries out adopting wireless mode output after encoding and decoding to modulation signal.
In preferential embodiment, when mobile terminal is used as Bluetooth transmission device, initial voice signal can be inputted by the earphone wire of the 3.5mm bore of standard, but earphone interface is not limited to 3.5mm earphone, can also select to comprise other multiple types of 2.5mm earphone, or other connectors of mobile terminal.
In preferential embodiment, when mobile terminal detects the earphone inserting at described earphone interface place and has signal input, be switched to the second mode of operation; Or, while having specific keys to be triggered, be switched to described the second mode of operation on the keyboard that described mobile terminal detected.
Can judge that earphone interface is be connected with earphone or for inputting outside initial voice signal, by the human-computer interaction interface of mobile terminal, select the switching between corresponding function items and implementation pattern by user.
In above-described embodiment, utilize the earphone interface of mobile terminal, by analog switch, the initial voice signal of outside input is sent into the circuit input interface of mobile terminal audio encoding-decoding device, through analog-to-digital conversion and Digital Signal Processing, through digital audio interface (I2S), pass baseband chip back again, through switching, imported into bluetooth unit, after encoding and decoding, sent.Only need to have the mobile terminal of a Bluetooth function, the initial voice signal of needs transmission is transferred to earphone interface, any bluetooth earphone of arranging in pairs or groups, can realize wireless music transmission after setting respective menu.
The embodiment of the present invention provides a kind of mobile terminal, as shown in Figure 3, comprising:
Earphone interface 401, for inputting from outside initial voice signal;
Analog switch 402, for when the conducting state, allows described initial voice signal to enter described mobile terminal from described earphone interface 401 is reverse;
Signal processing unit 403, generates and treats modulation signal for described initial voice signal being carried out to analog-to-digital conversion and Digital Signal Processing;
Modulating unit 404, for to the described modulation signal that generates after modulation signal is modulated,
Radio-cell 405, for adopting wireless mode to export described modulation signal.
In preferential embodiment, radio-cell 405 is a Bluetooth chip specifically, and wireless mode specifically meets the transmission means of Bluetooth protocol.Mobile terminal also comprises:
Pattern performance element, for when described mobile terminal is during in the first mode of operation, closes described analog switch;
When described mobile terminal is during in the second mode of operation, analog switch described in conducting;
When described mobile terminal is during in the first mode of operation, open earphone power amplifier function;
When described mobile terminal is during in the second mode of operation, close described analog switch;
When described mobile terminal is in the first mode of operation, and described earphone power amplifier function is when close, and opens audio frequency power amplifier function;
When described mobile terminal is during in the second mode of operation, close audio frequency power amplifier function.
The embodiment of the present invention provides a kind of wireless listening system, comprises stereo set, mobile terminal and wireless headset:
Stereo set, for exporting initial voice signal;
Described mobile terminal comprises:
Earphone interface 401, for inputting outside initial voice signal;
Analog switch 402, for when the conducting state, allows described initial voice signal to enter described mobile terminal from described earphone interface 401 is reverse;
Signal processing unit 403, generates and treats modulation signal for described initial voice signal being carried out to analog-to-digital conversion and Digital Signal Processing;
Modulating unit 404, for to the described modulation signal that generates after modulation signal is modulated,
Radio-cell 405, for adopting wireless mode to export described modulation signal;
Wireless headset, for receiving described modulation signal by wireless mode.
In preferential embodiment, radio-cell 405 is a Bluetooth chip specifically, and wireless mode specifically meets the transmission means of Bluetooth protocol.Mobile terminal also comprises:
Pattern performance element, for when described mobile terminal is during in the first mode of operation, closes described analog switch;
When described mobile terminal is during in the second mode of operation, analog switch described in conducting;
When described mobile terminal is during in the first mode of operation, open earphone power amplifier function;
When described mobile terminal is during in the second mode of operation, close described analog switch;
When described mobile terminal is in the first mode of operation, and described earphone power amplifier function is when close, and opens audio frequency power amplifier function;
When described mobile terminal is during in the second mode of operation, close audio frequency power amplifier function.
The beneficial effect of technique scheme of the present invention is as follows: initial voice signal inputs to analog switch by earphone interface, circuit input interface by analog switch conducting to baseband chip, the analog to digital converter being connected by circuit input interface again transfers audio digital signal to, audio digital signal is after baseband chip coding, after being modulated by baseband chip, by Universal Asynchronous Receiver &, send oral instructions and deliver to Bluetooth chip, Bluetooth chip after modulating is launched modulation signal, the blue-tooth stereo earphone that modulation signal is finally mated obtains, realized the wireless transmission of initial voice signal, and the cost of realizing is very little, do not increase user's burden, and simple to operate, applicable crowd is extensive.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. the wireless method of listening to, is characterized in that, is applied to mobile terminal, comprising:
From the earphone interface of described mobile terminal, input from outside initial voice signal;
The analog switch of mobile terminal described in conducting, allows described initial voice signal by described analog switch is reverse, to enter described mobile terminal from described earphone interface;
Described initial voice signal is carried out to analog-to-digital conversion and Digital Signal Processing and to generate, treat modulation signal;
To the described modulation signal that generates after modulation signal is modulated, modulation signal sends a mouthful input bluetooth unit by Universal Asynchronous Receiver &, bluetooth unit adopts wireless mode to export described modulation signal, and, Bluetooth antenna in bluetooth unit receives modulation signal, and modulation signal enters baseband chip by bluetooth unit;
Baseband chip carries out demodulation to modulation signal, and the voice signal after demodulation is sent to the L/ROUT output interface of baseband chip, and described L/R OUT output interface is connected with audio frequency power amplifier, and is connected with earphone power amplifier;
Audio frequency power amplifier is closed, and the voice signal after demodulation arrives earphone power amplifier through L/R OUT output interface;
Earphone power amplifier is strengthened voice signal;
Strengthened voice signal arrives earphone interface, can uppick voice signal by earphone.
2. method according to claim 1, is characterized in that,
Described wireless mode specifically meets the transmission means of Bluetooth protocol, and is the second mode of operation, when described mobile terminal is during in the second mode of operation, and analog switch described in conducting.
3. method according to claim 1, is characterized in that,
When described mobile terminal detects the earphone inserting at described earphone interface place and has signal input, be switched to the second mode of operation;
Or, while having specific keys to be triggered, be switched to the second mode of operation on the keyboard that described mobile terminal detected.
4. a mobile terminal, is characterized in that, comprising:
Earphone interface, for inputting from outside initial voice signal;
Analog switch, for when the conducting state, allows described initial voice signal to enter described mobile terminal from described earphone interface is reverse;
Signal processing unit, generates and treats modulation signal for described initial voice signal being carried out to analog-to-digital conversion and Digital Signal Processing;
Modulating unit, for to the described modulation signal that generates after modulation signal is modulated;
Radio-cell, specifically bluetooth unit, for send a mouthful input modulating signal by Universal Asynchronous Receiver &, adopts wireless mode to export described modulation signal; And the Bluetooth antenna in bluetooth unit receives modulation signal, modulation signal enters baseband chip by bluetooth unit;
Baseband chip carries out demodulation to modulation signal, and the voice signal after demodulation is sent to the L/ROUT output interface of baseband chip, and described L/R OUT output interface is connected with audio frequency power amplifier, and is connected with earphone power amplifier;
Audio frequency power amplifier is closed, and the voice signal after demodulation arrives earphone power amplifier through L/R OUT output interface;
Earphone power amplifier is strengthened voice signal;
Strengthened voice signal arrives earphone interface, can uppick voice signal by earphone.
5. mobile terminal according to claim 4, is characterized in that, also comprises:
Pattern performance element, for when described mobile terminal is during in the first mode of operation, closes described analog switch;
When described mobile terminal is during in the second mode of operation, analog switch described in conducting;
When described mobile terminal is during in the first mode of operation, open earphone power amplifier function;
When described mobile terminal is in the first mode of operation, and described earphone power amplifier function is when close, and opens audio frequency power amplifier function.
6. a wireless listening system, is characterized in that, comprises stereo set, mobile terminal and wireless headset:
Stereo set, for exporting initial voice signal;
Described mobile terminal comprises:
Earphone interface, for inputting outside initial voice signal;
Analog switch, for when the conducting state, allows described initial voice signal to enter described mobile terminal from earphone interface is reverse;
Signal processing unit, generates and treats modulation signal for described initial voice signal being carried out to analog-to-digital conversion and Digital Signal Processing;
Modulating unit, for to the described modulation signal that generates after modulation signal is modulated,
Radio-cell, bluetooth unit specifically, for sending a mouthful input modulating signal by Universal Asynchronous Receiver &, adopt wireless mode to export described modulation signal, and the Bluetooth antenna in bluetooth unit receives modulation signal, modulation signal enters baseband chip by bluetooth unit;
Baseband chip carries out demodulation to modulation signal, and the voice signal after demodulation is sent to the L/ROUT output interface of baseband chip, and described L/R OUT output interface is connected with audio frequency power amplifier, and is connected with earphone power amplifier;
Audio frequency power amplifier is closed, and the voice signal after demodulation arrives earphone power amplifier through L/R OUT output interface;
Earphone power amplifier is strengthened voice signal;
Strengthened voice signal arrives earphone interface, can uppick voice signal by earphone;
Wireless headset, for receiving described modulation signal by wireless mode.
7. system according to claim 6, is characterized in that, described mobile terminal also comprises:
Pattern performance element, for when described mobile terminal is during in the first mode of operation, closes described analog switch;
When described mobile terminal is during in the second mode of operation, analog switch described in conducting;
When described mobile terminal is during in the first mode of operation, open earphone power amplifier function;
When described mobile terminal is in the first mode of operation, and described earphone power amplifier function is when close, and opens audio frequency power amplifier function.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110154393.8A CN102821189B (en) | 2011-06-09 | 2011-06-09 | Wireless listening method, mobile terminal and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110154393.8A CN102821189B (en) | 2011-06-09 | 2011-06-09 | Wireless listening method, mobile terminal and system |
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| CN102821189B true CN102821189B (en) | 2014-11-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2894176Y (en) * | 2006-04-25 | 2007-04-25 | 张红彬 | Wireless earphon with universal interface based on Zigbee technique |
| CN101316422A (en) * | 2008-07-01 | 2008-12-03 | 中兴通讯股份有限公司 | Mobile terminal and method for working as audio apparatus speaker |
| CN101645300A (en) * | 2009-05-15 | 2010-02-10 | 上海闻泰电子科技有限公司 | Multimedia shared mobile terminal supporting double-interface |
| CN201813435U (en) * | 2010-07-23 | 2011-04-27 | 陈端洪 | Vehicle-mounted frequency modulation (FM) hands-free system |
-
2011
- 2011-06-09 CN CN201110154393.8A patent/CN102821189B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2894176Y (en) * | 2006-04-25 | 2007-04-25 | 张红彬 | Wireless earphon with universal interface based on Zigbee technique |
| CN101316422A (en) * | 2008-07-01 | 2008-12-03 | 中兴通讯股份有限公司 | Mobile terminal and method for working as audio apparatus speaker |
| CN101645300A (en) * | 2009-05-15 | 2010-02-10 | 上海闻泰电子科技有限公司 | Multimedia shared mobile terminal supporting double-interface |
| CN201813435U (en) * | 2010-07-23 | 2011-04-27 | 陈端洪 | Vehicle-mounted frequency modulation (FM) hands-free system |
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| CN102821189A (en) | 2012-12-12 |
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