CN102255623A - Mobile terminal and system for listening to radio by utilizing Bluetooth earphone - Google Patents
Mobile terminal and system for listening to radio by utilizing Bluetooth earphone Download PDFInfo
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- CN102255623A CN102255623A CN2011101009014A CN201110100901A CN102255623A CN 102255623 A CN102255623 A CN 102255623A CN 2011101009014 A CN2011101009014 A CN 2011101009014A CN 201110100901 A CN201110100901 A CN 201110100901A CN 102255623 A CN102255623 A CN 102255623A
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Abstract
The invention discloses a mobile terminal and a system for listening to radio by utilizing a Bluetooth earphone. The mobile terminal comprises a microprocessor, a frequency modulation (FM) module, a deserializing module, a Bluetooth module, a Bluetooth antenna and an FM antenna, wherein the FM antenna is used for receiving FM data and transmitting the FM data to the FM module; the FM antenna is connected with the microprocessor by the FM module; the Bluetooth antenna is connected with the microprocessor by the Bluetooth module; and the FM module is connected with the Bluetooth module by the deserializing module. In the mobile terminal and the system, the FM module demodulates and decodes the FM data and transmits acquired audio data to the Bluetooth module by an inter-integrated circuit sound (I2S) interface, the Bluetooth module encodes and modulates the audio data and externally transmits the encoded and modulated audio data by the Bluetooth antenna, and the Bluetooth earphone can receive the FM data from a mobile phone to listen to the ratio, so that a user is free from the constraints of earphone cable lengths when listening to radio programs by the mobile phone, and remote listening to the radio is realized.
Description
Technical field
The present invention relates to communication mobile terminal, particularly a kind of portable terminal and system that utilizes the bluetooth earphone broadcast listening.
Background technology
At present, FM(Frequency Modulation, frequency modulation(FM)) function (promptly using FM receiver to come the function of broadcast listening) and Bluetooth function have become the routine configuration of mobile phone.People can come the broadcast listening program as the antenna of mobile phone FM function by earphone, also can play mobile phone music and receive calls by bluetooth earphone, and these two kinds of functions are separate.
But the FM function of mobile phone must rely on earphone antenna, is subjected to the restriction of earphone cord length when making user's broadcast listening, can not finish at a distance and listen to, and has brought inconvenience for user's operation.
Thereby prior art is still waiting to improve and improve.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of portable terminal and system that utilizes the bluetooth earphone broadcast listening, can directly use bluetooth earphone broadcast listening program.
In order to achieve the above object, the present invention has taked following technical scheme:
A kind of portable terminal that utilizes the bluetooth earphone broadcast listening, wherein, comprise microprocessor, FM module, string and conversion module, bluetooth module, Bluetooth antenna and FM antenna, described FM antenna is connected with microprocessor by the FM module, Bluetooth antenna is connected with microprocessor by bluetooth module, and described FM module is connected with bluetooth module by string and conversion module; Described FM antenna is used to receive the FM data, and described FM data are sent to the FM module; Described FM module is used for the FM data are carried out the demodulation sign indicating number, and the voice data that obtains in the FM data is exported to string and conversion module with serial mode; Described string and conversion module be used for described voice data being gone here and there and transforming, and the voice data after will going here and there and transform are stored in the bluetooth module; Described bluetooth module, be used to obtain string and transform after voice data, and these data are encoded and modulate, and outwards send by Bluetooth antenna; Described microprocessor is used to control FM module and bluetooth module work.
The described portable terminal that utilizes the bluetooth earphone broadcast listening, wherein, described FM module comprises and is used for converting voice data to analog signal, sends the DAC unit of microprocessor, described DAC unit is connected with microprocessor.
The described portable terminal that utilizes the bluetooth earphone broadcast listening wherein, also comprises loudspeaker and earphone, and described microprocessor is connected with earphone with described loudspeaker respectively, is used for the analog signal of DAC unit output is amplified, and sends to loudspeaker or earphone.
The described portable terminal that utilizes the bluetooth earphone broadcast listening, wherein, the FM module comprises: be used for low noise amplifying unit that the FM data of FM antenna transmission are amplified; Be used for the FM data transaction after amplifying is become the ADC unit of digital signal; Be used for digital signal is carried out the demodulating unit of demodulation; Be used for decoding unit that the digital signal after the demodulation is decoded; Described FM antenna, low noise amplifying unit, ADC unit, demodulating unit, decoding unit and string and conversion module are connected successively.
The described portable terminal that utilizes the bluetooth earphone broadcast listening, wherein, described bluetooth module comprises: be used to store the also FIFO memory cell of the voice data of conversion module transmission of string; Be used for obtaining the voice data of FIFO memory cell, and this voice data is encoded and modulated M CU unit; Be used for the bluetooth RF unit that amplifies of voice data after coding, the modulation; Described string and conversion module, FIFO memory cell, MCU unit, bluetooth RF unit are connected successively with Bluetooth antenna.
The described portable terminal that utilizes the bluetooth earphone broadcast listening, wherein, described portable terminal is a mobile phone.
A kind of system that utilizes the bluetooth earphone broadcast listening wherein, comprises portable terminal and bluetooth earphone; Described bluetooth earphone is used for the FM data that mobile terminal receive sends, and broadcasts and listens to; Described portable terminal comprises microprocessor, FM module, string and conversion module, bluetooth module, Bluetooth antenna and FM antenna, described FM antenna is connected with microprocessor by the FM module, Bluetooth antenna is connected with microprocessor by bluetooth module, and described FM module is connected with bluetooth module by string and conversion module; Described FM antenna is used to receive the FM data, and described FM data are sent to the FM module; Described FM module is used for the FM data are carried out the demodulation sign indicating number, and the voice data that obtains in the FM data is exported to string and conversion module with serial mode; Described string and conversion module be used for described voice data being gone here and there and transforming, and the voice data after will going here and there and transform are stored in the bluetooth module; Described bluetooth module, be used to obtain string and transform after voice data, and these data are encoded and modulate, and outwards send by Bluetooth antenna; Described microprocessor is used to control FM module and bluetooth module work.
The described system that utilizes the bluetooth earphone broadcast listening, wherein, described FM module comprises the DAC unit that is used for voice data is converted to analog signal, described DAC unit is connected with microprocessor.
The described system that utilizes the bluetooth earphone broadcast listening, wherein, described portable terminal also comprises loudspeaker and earphone, and described microprocessor is connected with earphone with described loudspeaker respectively, be used for the analog signal of DAC unit output is amplified, and send to loudspeaker or earphone.
The described system that utilizes the bluetooth earphone broadcast listening, wherein, the FM module comprises: be used for low noise amplifying unit that the FM data of FM antenna transmission are amplified; Be used for the FM data transaction after amplifying is become the ADC unit of digital signal; Be used for digital signal is carried out the demodulating unit of demodulation;
Be used for decoding unit that the digital signal after the demodulation is decoded; Described FM antenna, low noise amplifying unit, ADC unit, demodulating unit, decoding unit and string and conversion module are connected successively.
A kind of portable terminal and system that utilizes the bluetooth earphone broadcast listening provided by the invention, by the FM module FM data are carried out the demodulation sign indicating number, the voice data that obtains is sent to bluetooth module by the I2S interface, bluetooth module is encoded to voice data and is modulated the back and outwards sends by Bluetooth antenna, bluetooth earphone just can receive listening to that the FM data sent from mobile phone broadcast, make when the user passes through mobile phone broadcast listening program, need not be subjected to the constraint of earphone cord length, realize listening at a distance.
Description of drawings
Fig. 1 utilizes the structured flowchart of the portable terminal preferred embodiment of bluetooth earphone broadcast listening for the present invention.
Fig. 2 utilizes the structure principle chart of the portable terminal preferred embodiment of bluetooth earphone broadcast listening for the present invention.
Fig. 3 utilizes the structured flowchart of system's preferred embodiment of bluetooth earphone broadcast listening for the present invention.
Embodiment
The invention provides a kind of portable terminal and system that utilizes the bluetooth earphone broadcast listening, its portable terminal is preferably mobile phone, under the situation that does not increase hardware, also can receive broadcast program by bluetooth earphone, has brought new experience to the user.
For making purpose of the present invention, technical scheme and effect clearer, clear and definite, below with reference to accompanying drawing and give an actual example that the present invention is described in more detail.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 1 and Fig. 2, the portable terminal that the embodiment of the invention provides comprises microprocessor, FM module, string and conversion module, bluetooth module, Bluetooth antenna 102 and FM antenna 101, described FM antenna 101 is connected with microprocessor by the FM module, Bluetooth antenna 102 is connected with microprocessor by bluetooth module, and described FM module is connected with bluetooth module by string and conversion module.
Described FM antenna 101 is installed in the inside of portable terminal, is used to receive the FM data, and described FM data are sent to the FM module.Described FM module is used for the FM data are carried out the demodulation sign indicating number, and the voice data that obtains in the FM data passes through I with serial mode
2S bus (a kind of audio data transmission bus standard) sends to string and conversion module.Wherein, voice data comprises L channel data and right data.
Described string and conversion module are to I
2The data of the left and right acoustic channels that the S bus sends are gone here and there and are transformed, and the voice data after will going here and there and transform is stored in the bluetooth module.Described bluetooth module be used to obtain string and transform after voice data, and these data are encoded and modulate, outwards send by Bluetooth antenna 102 then.Afterwards, by the FM data that the bluetooth earphone mobile terminal receive sends, finish FM and listen to.
Described microprocessor is the central processing unit of portable terminal, is used to control the groundwork of FM module, bluetooth module and portable terminal.Described FM module can be passed through I2C bus (Inter-Integrated Circuit, the twin wire universal serial bus) communicates with microprocessor, bluetooth module can pass through UART(Universal Asynchronous Receiver/Transmitter, universal asynchronous reception/dispensing device) bus or pcm bus and microprocessor communicate.
Described FM module comprises DAC(Digital to Analog Converter, digital to analog converter) unit, this DAC unit is connected with microprocessor and is used for converting voice data to analog signal, sends to microprocessor.Described portable terminal also comprises loudspeaker and earphone, and described microprocessor is connected with earphone with described loudspeaker respectively.
In the present embodiment, the DAC unit converts the voice data of left and right acoustic channels to analog signal, send to microprocessor, by microprocessor this analog signal is amplified, and send to loudspeaker or earphone, make the user or pass through earphone playing back music or broadcast listening program by the loudspeaker playing back music.
Please continue to consult Fig. 2, described FM module comprises low noise amplifying unit, ADC(Analog to Digital Converter, analog to digital converter) unit, demodulating unit and decoding unit.Described FM antenna 101, low noise amplifying unit, ADC unit, demodulating unit, decoding unit and string and conversion module are connected successively.
In the present embodiment, the FN(noise factor of described low noise amplifying unit) can reach below 3 decibels, the FM data that are used for FM antenna 101 is received are amplified, and convert amplified analog signal to digital signal by the ADC unit afterwards.
Described demodulating unit is used for the digital signal of FM data is carried out demodulation, decoding by the digital signal of decoding unit after to demodulation afterwards, (it comprises and extracts voice signal, go preemphasis etc.) back sends to string and conversion module by the I2S bus with the left and right acoustic channels data and goes here and there and transform or convert the voice data of left and right acoustic channels to analog signal by the DAC unit and send to microprocessor, process microprocessor respective handling sends to loudspeaker or earphone with the voice data of left and right acoustic channels, makes the user or pass through earphone playing back music or broadcast listening program by the loudspeaker playing back music.。
In the specific implementation, the clock frequency of I2S bus can be transferred, and its size depends on the quantified precision and the sampling rate of ADC unit.The sample frequency of supposing the FM module is f, and quantization bit is M, because the packet of each sampling contains two parts data of left and right acoustic channels, then only need make the speed of I2S bus should be not less than f * M * 2 and get final product.
In order to improve the quality of left and right acoustic channels data, between low noise amplifying unit and ADC unit, be provided with the intermediate frequency filtering module, the mixed frequency signal frequency conversion that will amplify through low noise is an intermediate-freuqncy signal, and by low-pass filtering treatment filtering high-frequency signal.
In the specific implementation, described bluetooth module comprises FIFO(First Input First Output, first-in first-out is lined up) memory cell, MCU(Micro Control Unit, micro-control unit) unit and bluetooth RF(radio frequency, radio frequency) unit, described string and conversion module, FIFO memory cell, MCU unit, bluetooth RF unit and Bluetooth antenna 102 are connected successively.
Wherein, the FIFO memory cell is used to store the voice data of string and conversion module transmission, the size of FIFO memory cell depends on the speed of I2S bus and the Bus Speed that bluetooth module reads the voice data among the FIFO, only otherwise can cause data in the FIFO memory cell to be overflowed gets final product.
MCU reads the unit voice data in the FIFO memory cell, and this voice data is encoded and modulated.Bluetooth RF unit is used for the data after coding and the modulation are amplified, and outwards sends by Bluetooth antenna 102 then to send.
The embodiment of the invention also provides a kind of system that utilizes the bluetooth earphone broadcast listening, it comprises portable terminal and bluetooth earphone, described bluetooth earphone is used for the FM data that mobile terminal receive sends, broadcast and listen to, because the circuit structure and the operation principle of described portable terminal are above being described in detail, are not giving unnecessary details herein.
In sum, a kind of portable terminal and system that utilizes the bluetooth earphone broadcast listening provided by the invention, by the FM module FM data are carried out the demodulation sign indicating number, the voice data that obtains is sent to bluetooth module by the I2S interface, bluetooth module is encoded to voice data and is modulated the back and outwards sends by Bluetooth antenna, bluetooth earphone just can receive listening to that the FM data sent from mobile phone broadcast, make when the user passes through mobile phone broadcast listening program, need not be subjected to the constraint of earphone cord length, realized listening at a distance, under the prerequisite that does not increase hardware cost, increased the function of portable terminal, improved the competitiveness of product on market.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. portable terminal that utilizes the bluetooth earphone broadcast listening, it is characterized in that, comprise microprocessor, FM module, string and conversion module, bluetooth module, Bluetooth antenna and FM antenna, described FM antenna is connected with microprocessor by the FM module, Bluetooth antenna is connected with microprocessor by bluetooth module, and described FM module is connected with bluetooth module by string and conversion module;
Described FM antenna is used to receive the FM data, and described FM data are sent to the FM module;
Described FM module is used for the FM data are carried out the demodulation sign indicating number, and the voice data that obtains in the FM data is exported to string and conversion module with serial mode;
Described string and conversion module be used for described voice data being gone here and there and transforming, and the voice data after will going here and there and transform are stored in the bluetooth module;
Described bluetooth module, be used to obtain string and transform after voice data, and these data are encoded and modulate, and outwards send by Bluetooth antenna;
Described microprocessor is used to control FM module and bluetooth module work.
2. the portable terminal that utilizes the bluetooth earphone broadcast listening according to claim 1 is characterized in that, described FM module comprises and is used for converting voice data to analog signal, sends the DAC unit of microprocessor, and described DAC unit is connected with microprocessor.
3. the portable terminal that utilizes the bluetooth earphone broadcast listening according to claim 2, it is characterized in that, also comprise loudspeaker and earphone, described microprocessor is connected with earphone with described loudspeaker respectively, be used for the analog signal of DAC unit output is amplified, and send to loudspeaker or earphone.
4. the portable terminal that utilizes the bluetooth earphone broadcast listening according to claim 1 is characterized in that, the FM module comprises:
Be used for low noise amplifying unit that the FM data of FM antenna transmission are amplified;
Be used for the FM data transaction after amplifying is become the ADC unit of digital signal;
Be used for digital signal is carried out the demodulating unit of demodulation;
Be used for decoding unit that the digital signal after the demodulation is decoded;
Described FM antenna, low noise amplifying unit, ADC unit, demodulating unit, decoding unit and string and conversion module are connected successively.
5. the portable terminal that utilizes the bluetooth earphone broadcast listening according to claim 1 is characterized in that, described bluetooth module comprises:
Be used to store the also FIFO memory cell of the voice data of conversion module transmission of string;
Be used for obtaining the voice data of FIFO memory cell, and this voice data is encoded and modulated M CU unit;
Be used for the bluetooth RF unit that amplifies of voice data after coding, the modulation;
Described string and conversion module, FIFO memory cell, MCU unit, bluetooth RF unit are connected successively with Bluetooth antenna.
6. according to any described portable terminal that utilizes the bluetooth earphone broadcast listening of claim 1 to 5, it is characterized in that described portable terminal is a mobile phone.
7. a system that utilizes the bluetooth earphone broadcast listening is characterized in that, comprises portable terminal and bluetooth earphone;
Described bluetooth earphone is used for the FM data that mobile terminal receive sends, and broadcasts and listens to;
Described portable terminal comprises microprocessor, FM module, string and conversion module, bluetooth module, Bluetooth antenna and FM antenna, described FM antenna is connected with microprocessor by the FM module, Bluetooth antenna is connected with microprocessor by bluetooth module, and described FM module is connected with bluetooth module by string and conversion module;
Described FM antenna is used to receive the FM data, and described FM data are sent to the FM module;
Described FM module is used for the FM data are carried out the demodulation sign indicating number, and the voice data that obtains in the FM data is exported to string and conversion module with serial mode;
Described string and conversion module be used for described voice data being gone here and there and transforming, and the voice data after will going here and there and transform are stored in the bluetooth module;
Described bluetooth module, be used to obtain string and transform after voice data, and these data are encoded and modulate, and outwards send by Bluetooth antenna;
Described microprocessor is used to control FM module and bluetooth module work.
8. the system that utilizes the bluetooth earphone broadcast listening according to claim 7 is characterized in that, described FM module comprises the DAC unit that is used for voice data is converted to analog signal, and described DAC unit is connected with microprocessor.
9. the system that utilizes the bluetooth earphone broadcast listening according to claim 8, it is characterized in that, described portable terminal also comprises loudspeaker and earphone, described microprocessor is connected with earphone with described loudspeaker respectively, be used for the analog signal of DAC unit output is amplified, and send to loudspeaker or earphone.
10. the system that utilizes the bluetooth earphone broadcast listening according to claim 8 is characterized in that, the FM module comprises:
Be used for low noise amplifying unit that the FM data of FM antenna transmission are amplified;
Be used for the FM data transaction after amplifying is become the ADC unit of digital signal;
Be used for digital signal is carried out the demodulating unit of demodulation;
Be used for decoding unit that the digital signal after the demodulation is decoded;
Described FM antenna, low noise amplifying unit, ADC unit, demodulating unit, decoding unit and string and conversion module are connected successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011101009014A CN102255623A (en) | 2011-04-21 | 2011-04-21 | Mobile terminal and system for listening to radio by utilizing Bluetooth earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101009014A CN102255623A (en) | 2011-04-21 | 2011-04-21 | Mobile terminal and system for listening to radio by utilizing Bluetooth earphone |
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| CN102255623A true CN102255623A (en) | 2011-11-23 |
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| CN2011101009014A Pending CN102255623A (en) | 2011-04-21 | 2011-04-21 | Mobile terminal and system for listening to radio by utilizing Bluetooth earphone |
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Cited By (1)
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Application publication date: 20111123 |