CN201430617Y - Mobile terminal for transmitting/receiving frequency-modulated signals - Google Patents

Mobile terminal for transmitting/receiving frequency-modulated signals Download PDF

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Publication number
CN201430617Y
CN201430617Y CN2009201505559U CN200920150555U CN201430617Y CN 201430617 Y CN201430617 Y CN 201430617Y CN 2009201505559 U CN2009201505559 U CN 2009201505559U CN 200920150555 U CN200920150555 U CN 200920150555U CN 201430617 Y CN201430617 Y CN 201430617Y
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China
Prior art keywords
unit
signal
built
aerial
audio
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Expired - Fee Related
Application number
CN2009201505559U
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Chinese (zh)
Inventor
荆楠楠
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Hisense Mobile Communications Technology Co Ltd
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Hisense Mobile Communications Technology Co Ltd
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Priority to CN2009201505559U priority Critical patent/CN201430617Y/en
Application granted granted Critical
Publication of CN201430617Y publication Critical patent/CN201430617Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the mobile communication field, particularly to the mobile terminal technique with functions of receiving and transmitting frequency-modulated signals, and provides a mobile terminal for transmitting/receiving frequency-modulated signals. The mobile terminal comprises a built-in antenna, a micro-processor unit, an FM modulation transmitting unit and a media playing audio unit. The media playing audio unit is used for outputting audio signals played by a multi-media, the micro-processor is used for controlling connection of the output of the media playing audio unitand the input of the FM modulation transmitting unit, and the FM modulation transmitting unit is used for modulating the audio signals outputted by the media playing audio unit and then outputting the modulated audio signals to the built-in antenna to be transmitted. The mobile terminal utilizes the built-in antenna to receive and transmit the frequency-modulated signals, thereby avoiding using awire earphone as an antenna for receiving and transmitting the frequency-modulated signals, and then enabling the mobile terminal to be more convenient and more practical in use.

Description

The portable terminal of a kind of emission/reception FM signal
Technical field
The utility model relates to moving communicating field, relates in particular to a kind of portable terminal technology that possesses reception, emission FM signal function.
Background technology
Present portable terminal is except basic communication function, or multimedia terminal, such as playing the MP3 music, receiving fm broadcast signal etc., the portable terminal that has can also have the frequency modulation emission function, and the audio frequency that loud speaker built-in in the portable terminal will be play sends to the stereo set with FM reception function by FM signal and carries out high-quality broadcast.
But existing portable terminal all is to adopt the dual-mode antenna of wired earphone as the frequency modulation wireless signal.That is to say, when mobile phone users need use built-in radio function to listen to frequency modulation (FM) broadcasting, must plug wired earphone, otherwise can't receive FM signal; When mobile phone users need be sent to the stereo set of annex by wireless mode with audio signal, also need to plug wired earphone, play otherwise the audio signal of frequency modulation can't be sent to stereo set.
Yet external wired earphone has the 75-80 centimeter length usually, and tediously long connecting line uses to the user easily and brings inconvenience.External FM receives, transmitter module if adopt, and then make portable terminal realize that FM receives, the cost of emission function is higher, and the user uses still inconvenient.
The utility model content
The method of a kind of portable terminal that the utility model embodiment provides and reception thereof/emission FM signal makes mobile phone users can use the FM signal transmission-receiving function of terminal more easily.
A kind of portable terminal of launching FM signal comprises: built-in aerial, microprocessor unit, FM modulate emission unit, media play audio unit;
Described media play audio unit is used to export the audio signal of multimedia;
Described microprocessor unit links to each other with described media play audio unit, and whether output audio signal is to described FM modulate emission unit to be used to control described media play audio unit;
The input of described FM modulate emission unit links to each other with described media play audio unit, described FM modulate emission unit is used for after the audio signal that receives described media play audio unit output, carry out frequency modulation, and FM signal is outputed to described built-in aerial launch.
A kind of portable terminal that receives FM signal comprises:
Built-in aerial is used to receive FM signal;
The FM demodulating unit links to each other with described built-in aerial, is used to obtain the FM signal that described built-in aerial receives, and carries out obtaining baseband signal after the demodulation;
Microprocessor unit links to each other with described FM demodulating unit, is used to control described FM demodulating unit and exports described baseband signal and play to loud speaker.
The utility model embodiment is owing to adopt reception and the emission of built-in aerial realization to FM signal, thereby avoid using wired earphone to receive and the antenna of launching as FM signal, make the use of portable terminal convenient, practical, mobile phone users can use the FM signal transmission-receiving function of terminal more easily.
Description of drawings
Fig. 1 is the built-in aerial schematic diagram of the utility model embodiment;
Fig. 2 is the internal structure block diagram of portable terminal of the realization FM signal emission of the utility model embodiment;
The FM radio machine chip schematic diagram of the Si4721 model that Fig. 3 is adopted for the FM modulate emission unit of the utility model embodiment;
Fig. 4 is that the portable terminal of the utility model embodiment is realized FM signal method for transmitting flow chart;
Fig. 5 is provided with the method flow diagram of frequency modulation frequency for the user of the utility model embodiment;
Fig. 6 is the internal structure block diagram of the portable terminal that receives of the realization FM signal of the utility model embodiment.
Embodiment
The utility model embodiment in portable terminal built-in miniature antenna as reception, the transmitting antenna of FM signal, thereby needn't insert wired earphone again in emission or when receiving FM signal, make that the use of portable terminal is convenient, practical.
In order to guarantee the smaller size smaller of portable terminal, built-in aerial can not adopt common radio antenna.The utility model embodiment is by changing antenna body material structure and increasing the purpose that the Wound-rotor type structure reaches under the prerequisite that guarantees the antenna service behaviour, reduces antenna size.
Built-in aerial as shown in Figure 1, agent structure is cylindrical (also can be eight water chestnut posts or six water chestnut cylindricalitys), length is that 48mm, diameter are 4mm (occurrence those skilled in the art of length and diameter can adjust according to actual conditions), and the antenna body material that it adopts is a magnetic core; Antenna body structure separated into two parts, on each part, the enamel insulated wire by different size holds respectively.
Further,, the antenna body structure two parts be can be divided into, as shown in Figure 1 first (13mm) and second portion (32mm) for example are divided in order to make reception better.On each part, the enamel insulated wire by different size holds respectively; And two enamelled wires join in two-part junction, and the described line that joins extends the connecting line of a part as antenna and circuit part.
The utility model embodiment realizes the portable terminal of FM signal emission, comprise housing and circuit part, wherein circuit part comprises outside the original circuit of portable terminal such as memory cell, radio circuit unit, Keysheet module, liquid crystal display, power supply, loud speaker, Mike, also comprises shown in Fig. 2: be built in built-in aerial 201, FM modulate emission unit 202, microprocessor unit 203, media play audio unit 204, speech receiving element 205 in the portable terminal.
Wherein, media play audio unit 204 is used to export the audio signal of multimedia.The output of media play audio unit 204 links to each other with the input of FM modulate emission unit 202.
Microprocessor unit 203 links to each other with media play audio unit 204, and whether output audio signal is to FM modulate emission unit 202 to be used to control media play audio unit 204.
FM modulate emission unit 202 links to each other with built-in aerial 201, is used for carrying out frequency modulation after the audio signal that receives 204 outputs of media play audio unit, and FM signal is outputed to built-in aerial 201.
Speech receiving element 205 is used to receive the audio signal from Mike's input.The output of speech receiving element 205 links to each other with the input of FM modulate emission unit 202.
Microprocessor unit 203 also links to each other with speech receiving element 205, and whether output audio signal is to FM modulate emission unit 202 to be used to control speech receiving element 205.
FM modulate emission unit 202 is used for the audio signal of speech receiving element 205 outputs is carried out outputing to built-in aerial 201 behind the frequency modulation.
Further, microprocessor unit 203 also links to each other with FM modulate emission unit 202, is used to set the frequency modulation frequency.
The frequency modulation frequency that microprocessor unit 203 is set both can be the built-in default transmit frequency of terminal (such as the emission frequency that 5 acquiescences can be set), also can be the frequency that the user is provided with.
Microprocessor unit 203 can also receive the control command of user's On/Off frequency modulation emission function; Microprocessor unit 203 is according to the control command of user's unlatching frequency modulation emission function, the unlatching of control FM modulate emission unit 202, and control media play audio unit 204 or speech receiving element 205 are to FM modulate emission unit 202 output audio signals; Microprocessor unit 203 is according to user's the control command of closing the frequency modulation emission function, and control FM modulate emission unit 202 is closed, and control media play audio unit 204 or speech receiving element 205 stop to FM modulate emission unit 202 output audio signals.
FM modulate emission unit 202 specifically can adopt FM radio machine chip and peripheral circuit thereof to form, for example, the FM radio machine chip of Si4721 model as shown in Figure 3, this FM radio machine chip can be by the audio signal of data wire receiving media audio plays unit 204 or 205 outputs of speech receiving element.
Built-in aerial 201 is launched the modulation signal of FM modulate emission unit 202 outputs.The concrete structure of built-in aerial 201 can as above be given an account of the antenna structure that continues.
Microprocessor unit 203 specifically can be on QUALCOMM QSC6055 platform, by calling the frequency modulation frequency that relevant driver is provided with FM modulate emission unit 202 modulation signals.Brew (BinaryRuntime Environemnt for wireless) is the standard environment of a wireless device application exploitation, has been widely used in now on the various CDMA cell phone platforms.
The method of above-mentioned portable terminal emission FM signal, flow chart specifically comprises the steps: as shown in Figure 4
S401, microprocessor unit 203 control media play audio units 204 or speech receiving element 205 are to FM modulate emission unit output audio signal.
Audio signals such as audio frequency that portable terminal receives the audio frequency of MP3 player plays, communication speech, FM receiver or GPS navigation voice send to FM modulate emission unit.
Concrete, audio signals such as audio frequency that the microprocessor unit 203 of portable terminal receives audio frequency, communication speech, the FM receiver of MP3 player plays or GPS navigation voice send to FM modulate emission unit 202.Further, the microprocessor unit 203 of portable terminal can also receive the control command of user's On/Off frequency modulation emission function, after the control command of the unlatching frequency modulation emission function that receives the user, audio signals such as audio frequency that the audio frequency of MP3 player plays, communication speech, FM receiver are received or GPS navigation voice send to FM modulate emission unit 202.
S402, FM modulate emission unit carry out frequency modulation according to the frequency modulation frequency of setting to the audio signal that receives.
In FM modulate emission unit, FM modulate emission unit carries out frequency modulation according to the frequency modulation frequency of setting to the audio signal that receives to microprocessor unit 203 in the portable terminal with the frequency modulation frequency point setting set.
The frequency modulation frequency of setting both can be the built-in default transmit frequency of terminal, also can be the frequency that the user is provided with.
The idiographic flow of the frequency that microprocessor unit 203 reception users are provided with comprises as shown in Figure 5:
The value of frequency point of S501, reception user input;
In the reasonable scope whether the value of frequency point that S502, judgement receive (such as rational frequency point ranges can be set is 87.5-104MHz, and those skilled in the art also can be provided with rational frequency point ranges according to actual conditions); If, execution in step S503; Otherwise, the zone of reasonableness of execution in step S504 prompting user frequency, and execution in step S501 receives the value of frequency point of user's input again;
S503, the value of frequency point that the user is imported are set in the FM modulate emission unit.
The interface that the user is provided with the interface of application program of frequency and On/Off frequency modulation emission function can be arranged on MP3 and play and use or during GPS navigation uses, so that the user can use the frequency modulation emission function easily when using these functions.
S403, the FM signal behind the frequency modulation is launched by the built-in antenna of portable terminal.
The concrete structure of the antenna that described portable terminal is built-in can foregoing antenna, repeats no more herein.
Fig. 6 comprises: be built in built-in aerial 601, FM demodulating unit 602, microprocessor unit 603 in the portable terminal at least for the utility model embodiment realizes the portable terminal that FM signal receives.
Built-in aerial 601 is used to receive FM signal.The concrete structure of this built-in aerial 601 can as above be given an account of the antenna structure that continues, and repeats no more herein.
FM demodulating unit 602 links to each other with built-in aerial 601, obtains baseband signal after the FM signal demodulation that is used for described built-in aerial is received.The output of FM demodulating unit 602 links to each other with loud speaker.
Microprocessor unit 603 links to each other with FM demodulating unit 602, is used to control FM demodulating unit 602 and whether exports baseband signal and play to loud speaker.
Thereby portable terminal can receive FM signal by built-in aerial, and by the FM signal demodulation of FM demodulating unit to receiving, obtains playing after the baseband signal, realizes the function of FM receiver.
The utility model embodiment is owing to adopt reception and the emission of built-in aerial realization to FM signal, thereby avoid using wired earphone to receive and the antenna of launching as FM signal, make the use of portable terminal convenient, practical, mobile phone users can use the FM signal transmission-receiving function of terminal more easily.
Further, adopt the FM radio machine chip of Si4721 model to constitute FM modulate emission unit, can support the user that the function of frequency manually is set, and its cost of realizing the FM signal emission function is lower.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, this program can be stored in the computer read/write memory medium, as: ROM/RAM, magnetic disc, CD etc.
Will also be appreciated that the apparatus structure shown in accompanying drawing or the embodiment only is schematically, the presentation logic structure.Wherein the module that shows as separating component may or may not be physically to separate, and the parts that show as module may be or may not be physical modules, both can be positioned at a place, also can be distributed on several network element.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims (7)

1, a kind of portable terminal of launching FM signal is characterized in that, comprising: built-in aerial, microprocessor unit, FM modulate emission unit, media play audio unit;
Described media play audio unit is used to export the audio signal of multimedia;
Described microprocessor unit links to each other with described media play audio unit, and whether output audio signal is to described FM modulate emission unit to be used to control described media play audio unit;
The input of described FM modulate emission unit links to each other with described media play audio unit, described FM modulate emission unit is used for after the audio signal that receives described media play audio unit output, carry out frequency modulation, and FM signal is outputed to described built-in aerial launch.
2, terminal as claimed in claim 1 is characterized in that, also comprises:
The speech receiving element is used to receive the audio signal from Mike's input; And
Described microprocessor unit also links to each other with described speech receiving element, and whether output audio signal is to described FM modulate emission unit to be used to control described speech receiving element;
The output of described speech receiving element links to each other with the input of described FM modulate emission unit, described FM modulate emission unit is after the audio signal that receives described speech receiving element output, carry out frequency modulation, and FM signal is outputed to described built-in aerial launch.
3, terminal as claimed in claim 1 or 2 is characterized in that, the agent structure separated into two parts of described built-in aerial is surrounded with enamel insulated wire respectively on each part.
4, terminal as claimed in claim 3 is characterized in that, described FM modulate emission unit specifically comprises FM radio machine chip and peripheral circuit thereof.
5, terminal as claimed in claim 4 is characterized in that, the model of described FM radio machine chip is Si4721.
6, a kind of portable terminal that receives FM signal is characterized in that, comprising:
Built-in aerial is used to receive FM signal;
The FM demodulating unit links to each other with described built-in aerial, is used to obtain the FM signal that described built-in aerial receives, and carries out obtaining baseband signal after the demodulation;
Microprocessor unit links to each other with described FM demodulating unit, is used to control described FM demodulating unit and exports described baseband signal and play to loud speaker.
7, terminal as claimed in claim 6 is characterized in that, the agent structure separated into two parts of described built-in aerial is surrounded with enamel insulated wire respectively on each part.
CN2009201505559U 2009-05-04 2009-05-04 Mobile terminal for transmitting/receiving frequency-modulated signals Expired - Fee Related CN201430617Y (en)

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CN2009201505559U CN201430617Y (en) 2009-05-04 2009-05-04 Mobile terminal for transmitting/receiving frequency-modulated signals

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102143273A (en) * 2011-04-29 2011-08-03 惠州Tcl移动通信有限公司 Mobile phone and method for realizing frequency modulation (FM) broadcast communication of mobile phone
WO2013020434A1 (en) * 2011-08-09 2013-02-14 惠州Tcl移动通信有限公司 Mobile terminal, and monitoring system and monitoring method based on same
CN103312353A (en) * 2013-05-07 2013-09-18 上海广电电子科技有限公司 Remote controller and broadcast receiving method
CN112565980A (en) * 2021-02-24 2021-03-26 智道网联科技(北京)有限公司 Intelligent vehicle-mounted networking terminal, audio information sending method and noise reduction method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102143273A (en) * 2011-04-29 2011-08-03 惠州Tcl移动通信有限公司 Mobile phone and method for realizing frequency modulation (FM) broadcast communication of mobile phone
WO2013020434A1 (en) * 2011-08-09 2013-02-14 惠州Tcl移动通信有限公司 Mobile terminal, and monitoring system and monitoring method based on same
CN103312353A (en) * 2013-05-07 2013-09-18 上海广电电子科技有限公司 Remote controller and broadcast receiving method
CN112565980A (en) * 2021-02-24 2021-03-26 智道网联科技(北京)有限公司 Intelligent vehicle-mounted networking terminal, audio information sending method and noise reduction method
CN112565980B (en) * 2021-02-24 2021-05-14 智道网联科技(北京)有限公司 Intelligent vehicle-mounted networking terminal, audio information sending method and noise reduction method

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100324

Termination date: 20130504