CN101098201A - Audio output device of mobile device for broadcasting reception and control method thereof - Google Patents
Audio output device of mobile device for broadcasting reception and control method thereof Download PDFInfo
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- CN101098201A CN101098201A CNA2006100283538A CN200610028353A CN101098201A CN 101098201 A CN101098201 A CN 101098201A CN A2006100283538 A CNA2006100283538 A CN A2006100283538A CN 200610028353 A CN200610028353 A CN 200610028353A CN 101098201 A CN101098201 A CN 101098201A
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Abstract
The invention relates to a voice output device of mobile device for receiving broadcast, and a relative control method, wherein the voice output device comprises a voice data wave selector from DAM and DMB voice sources, a digit-analogue converter for converting the voice output from the data wave selector into analogue voice signal, a voice coder/decoder for decoding the voice signal received from the converter, and a controller for controlling the output of the coder/decoder and the data wave selector. The invention can effectively control various voice sources, to make circuit simple and control easy.
Description
Technical field
The present invention relates to a kind of broadcast reception audio output device and control method thereof, relate in particular to and a kind ofly have that to select ripple device (audio data selector) with the voice data of selecting multiple audio-source output be the audio output device and the control method thereof of the broadcast reception usefulness mobile device of feature with mobile device.
Background technology
Recently, CD, DVD etc. have the digital audio instrument of remarkable tonequality etc. and popularize fast, and audience's the requirement that requires to have the digital broadcasting of high quality audio also increases day by day.For this reason, the tonequality that provides for the FM broadcasting that overcomes standard limits, and Europe, Canada, the U.S. etc. have carried out digital audio broadcasting (digital audiobroadcasting is hereinafter to be referred as DAB).
DAB (digital audio broadcasting) is a kind of broadcast program digitlization, and can realize that multi-medium datas such as wireless calling, rest image transmit the technology of service.Up to the present, receive in the broadcast receiver, developed the broadcast receiver that to provide high quality audio, shows functions such as several data service and intercommunication in purpose.
The title of DAB is varied according to the difference of service area.Be called DAB (digital audiobroadcasting) as Europe, the U.S. is called DAR (digital audio radio), and Canada is called DRB (digitalradio broadcasting) etc.The title of DSB (digital soundbroadcasting) is then used in international electrical equipment associating (ITU).
Compare with audio broadcasting recently, emphasize that more the multimedia service that comprises image then is called DMB (DMB), DMB (digital multimedia broadcasting: hereinafter to be referred as DMB) can the user who is in the mobile status in vehicle or walking provide multimedia services such as audio frequency, video, data.
DMB service organically blends the mobility of communication and the multimedia feature of broadcasting as entering the broadcast communication leading role of convergence era, realization intercommunication when guaranteeing network interlock technological development from now on.That is,, utilize the mobile radio communication of two-way channel if DMB broadcast receiving apparatus machine is combined with mobile phone, in the environment that broadcasting, communication are merged to guarantee its leading position.At present, can listen to the support DAB/DMB Products Development of watching digital audio broadcasting DAB or DMB DMB and enter substantial period, be DAB/DMB personal terminals, vehicle mounted terminal machine, mobile phone, compatible receiver etc. as the DAB/DMB receiver.
According to the digital complex phenomenon of digital technology development recently, at mobile phone or PDA (personal dataassistance: personal digital assistant) wait the technology of loading DMB receiving function on the mobile phone to be developed.In fact, compare with the DMB personal terminals, the terminating machine of various ways such as mobile phone/PDA mating type, mobile phone card, CD/MP3 player also occurs.
Fig. 1 is and the Audio Processing function associated chart with personal mobile terminal device of DMB receiving function of the prior art.
With reference to Fig. 1, the individual portable terminal with broadcast receiving function is by the tuner 101 that can choose broadcast singal; The broadcast singal that is transmitted by tuner 101 is transformed into the base band part 102 of digital signal; To the audio/video decoder 103 of decoding by the multi-medium data of above-mentioned base band part transmission; Control part 106 formations such as grade of the relevant function of broadcast reception of control individual portable terminal.
On the individual portable terminal of the received broadcast program of this prior art, system audio (system audio) can independently be provided respectively, from the DAB audio frequency of the DAB broadcasting of base band part output, listen to DMB and broadcast audio-source such as necessary DMB audio frequency.
Therefore, on base band part 102, be connected with the 1st digital-analog convertor (DAC:digital analog converter) (DACl) 104 that the DAB audio frequency by the DAB broadcasting of base band part output is transformed into simulated audio signal, on audio/video decoder 103, be connected with the 2nd digital-analog convertor (DAC2) 105 that the DMB audio frequency by the DMB broadcasting of audio/video decoder 103 outputs is transformed into simulated audio signal.
Audio signal in 105 inner conversions of the 1st digital-analog convertor (digital analog converter) the 104 and the 2nd digital-analog convertor is outwards exported by audio output part such as loud speakers.On the other hand, in the audio codec 107 that connects control part 106, system audio is handled, and outwards exported by audio output part such as loud speakers.
Generally speaking, the DMB broadcast reception with individual portable terminal (" PDA ") as audio frequency that can provide to miniature PC and the instrument that has added the DMB function are provided, can add two kinds of audio-source, DMB service department also can provide Video service (to comprise the BSAC audio frequency simultaneously, BSAC audio frequency: Bit-slice Arithmetic Code, be bit timeslice arithmetic coding) and audio service (MUSCAM Audio only, MUSCAM are a kind of compress modes in the digital compression TV).
Therefore, the user optionally watches or listens to program.At this moment, the output of the audio frequency of audio server transmits with MUSCAM form (DAB form), and exports from the base band end with IIS (IIS:Inter-IC Sound bus claims I2S again, is the serial digital audio-frequency bus agreement that PHILIPS Co. proposes).Audio frequency to the BSAC form that comprises video server in audio/video decoder is decoded, and exports with the IIS form.
Broadcast reception in the prior art is with in the individual portable terminal, export at these three kinds of audio frequency of system audio and DAB/DMB audio frequency mutually with different assembly circuits, and under the situation that loud speaker is separately exported, the complexity of system will occur increasing, the software program that control is simultaneously exported separately is the problem of more complicated also.
Summary of the invention
The present invention proposes for addressing the above problem just, the object of the present invention is to provide a kind of can be broadcast reception one with the audio frequency of mobile device output integration, and can effectively control audio output device and the control method thereof of the broadcast reception of multiple audio-source with mobile device.
Another object of the present invention is to provide a kind of circuit to constitute audio output device and the control method thereof of simple, as can to reduce manufacturing cost broadcast reception with mobile device.
To achieve these goals, the broadcast reception of the present invention audio output device of mobile device is characterized in that:
One, described broadcast reception comprises with the audio output device of mobile device:
In digital audio broadcasting (DAB) and DMB (DMB) audio-source, select the voice data of one of them to select the ripple device;
Select the audio frequency of exporting in the ripple device to be transformed into the digital-analog convertor (digital analog converter:DAC) of simulated audio signal by data;
The audio codec that control is decoded with the audio signal that receives from above-mentioned digital-analog convertor; Control above-mentioned audio codec and data and select the control part of ripple device output.
Broadcast reception of the present invention is in Line In (the Line In: straight recording function of the DAC that can support to shunt output with the audio codec of the audio output device of mobile device, i.e. Line-in interface by the MP3 player, by straight record line can be directly from the file of other cassette recorders, CD player direct recording MP3 format) state.
Audio codec of the present invention is an audio signal of handling compression according to MP audio layer 3 (IIS:MPEG AUDIO LAYER-3, the 3rd layer of audio frequency dynamic compression, i.e. MP3).
In addition, in order to reach above-mentioned purpose,, be characterised in that it comprises following step for the output intent of broadcast reception of the present invention with the control audio on the audio output device that moves dress:
The step of default audio codec is set;
Select the step of user's DAB/DMB broadcast capability;
In DAB broadcasting and DMB broadcasting, select under the situation of one of them, select the ripple device to provide this broadcast data to select the step of signal to data;
Select in the ripple device in data, select the broadcast singal of user's selection and the step of exporting to digital-analog convertor.
Said method among the present invention also is included in according to the user and selects under the situation of DAB audio frequency, data is selected the output signal of ripple device audio codec is shunted the step of output to the step of DAB conversion with in the mode of straight recording function (Line In).
In addition, the said method among the present invention also is included in according to the user and selects under the situation of DMB audio frequency, data is selected the output signal of ripple device audio codec is shunted the step of output to the step of DMB conversion with in the mode of straight recording function (Line In).
Effect of the present invention:
Broadcasting of the present invention can be controlled system audio, DAB broadcast program, DMB audio frequency at an easy rate with the audio output device and the method thereof of personal portable terminal, thereby the circuit of individual portable terminal is constituted simply, and control is convenient.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the schematic diagram with mobile device of digital broadcasting receiving function of the prior art;
Fig. 2 is the schematic diagram of the broadcast reception of the embodiment of the invention with the audio output device of mobile device;
Fig. 3 is that the broadcast reception of the embodiment of the invention is exported control flow chart with the audio frequency in the audio output device of mobile device;
Fig. 4 is the flow chart of the broadcast reception of the embodiment of the invention with the output of the audio frequency in mobile device control embodiment.
The symbol description of major part in the accompanying drawing:
201: tuner
210: base band part
220: audio/video decoder
230: data are selected the ripple device
240: control part
250: digital-analog convertor
260: audio codec
270: audio output part
280: customer interface portion
290: display part
300: main storage
Embodiment
Below in conjunction with accompanying drawing broadcast reception of the present invention is elaborated with the audio output device of mobile device and the execution mode of control method thereof.
Following elder generation describes several terms that use among the present invention.
Broadcast reception among the present invention is exactly broadcast reception a tuner and an audio/video decoder that the analog signal that receives is changed to digital signal of receiving broadcast signal with mobile device, and can watch the mobile phone of DMB simultaneously.This broadcast reception of the present invention comprises personal portable turminating machine PDA with mobile device, but be not limited only to PDA, it is a kind ofly can watch the mobile phone of program function by mobile communication terminal, wireless terminal, navigation terminal machine, portable media player Wireless Telecom Equipments such as (portable multimedia player:PMP).
Referring to Fig. 2, Fig. 2 is the schematic diagram of the broadcast reception of the embodiment of the invention with the audio output device of mobile device.
The broadcasting of the embodiment of the invention watches that the audio output device with mobile device becomes analog signal to the voice data of encoding in the mobile devices such as individual portable terminal, and synthetic and amplification, simultaneously to loud speaker or earphone output.
The audio output device that broadcasting of the present invention is listened to mobile device comprises: the voice data of one of them in selection DAB and the DMB audio-source selects ripple device 230; Select the voice data of exporting the ripple device to be transformed into the digital-analog convertor (DAC) 250 of simulated audio signal from data; To the audio codec 260 of decoding from the audio signal of above-mentioned digital-analog convertor 250 receptions; Control above-mentioned audio codec 260 and data and select the control part 240 etc. of the output of ripple device 230.
The mobile device that has only the common broadcast receiving function is by the tuner 201 of supporting broadcast receiving function; Base band part 210 and audio/video decoder 220 constitute.The effect of tuner 201 is the broadcast singals that are controlled at the channel that the selection user wants in the electric wave that receives by antenna according to control part 240.
The broadcast singal that the above-mentioned tuners 201 of 210 pairs of base band part transmit gains, and is transformed into baseband signal, and its conversion be demodulated to digital signal.Base band part 210 transmits the broadcast singal of demodulation to audio/video decoder 220.
220 pairs of Voice ﹠ Video data that transmitted by above-mentioned base band part 210 of audio/video decoder are decoded.Among the present invention, video/audio decoder 220 is carried out the DAB audio frequency output command or the DMB audio frequency output command of control part 240.
According to user's selection, the voice data among the present invention selects ripple device 230 in the make decision output of voice data of the control of control part 240.Be that voice data selects ripple device 230 to carry out the DAB data select signal or the DMB data select signal of control part 240, and in the DMB of the DAB of base band part 210 voice data and audio/video decoder voice data, determine one of them to export in view of the above.
Above-mentioned control part 240 as with the identical inscape of control part of the similar mobile device of individual portable terminal of common use, except that mobile device, comprise in addition receiving and the function of output DAB broadcasting or DMB broadcast singal with control criterion.
Selection according to the user, DAB audio frequency (IIS audio frequency), the audio/video decoder 220 of above-mentioned control part 240 control base band part 210 and can import the DMB audio frequency (IIS audio frequency: IIS (Inter-IC Sound bus) claim I2S again, be the serial digital audio-frequency bus agreement that PHILIPS Co. proposes) voice data select ripple device 220, decide voice data to select the output of ripple device 230.
The output that voice data selects ripple device 230 is once more to outside digital-analog convertor (DAC) 250 inputs, and is transformed into simulated audio signal, and to straight recording function (Line In) input of the audio codec 260 of system.Control part 240 makes the audio frequency output of audio codec 260 shunt to straight recording function (Line In) simultaneously.
Digital-analog convertor (digital analog converter) is transformed into the digital multimedia broadcasting signal that the channel of listening to by the user or watching receives digital signal and carries out the error correction function.In above-mentioned digital-analog convertor (digital analog converter) 250, the sound broadcasting signal that is transformed into digital signal is exported to audio codec 260.
Mobile device with audio output device of the present invention comprises customer interface portion 280, display part 290, main storage 300 and radio receiving and transmitting part formations such as (not having diagram).
Below broadcast reception with the above-mentioned formation control flow with the audio output device of mobile device is described.
Referring to Fig. 3, Fig. 3 is that the broadcast reception of the embodiment of the invention is exported control flow chart with the audio frequency in the audio output device of mobile device.
Do not using on the mobile device under the situation that DAB uses and DMB uses, just do not exporting DAB/DMB, after the system audio of control part control is decoded according to audio codec, exporting by audio output part.
Step 301, the user operates the correlation function that user interface is selected broadcast reception, and under the situation of selecting DAB broadcasting, audio output device of the present invention carries out following operation.
Step 303, step 305, as shown in Figure 3, control part transmits the DAB output command by SPI (serial peripheralinterface) to audio/video decoder, and the audio/video decoder that receives control part DAB output command is selected the DAB audio frequency of ripple device output base band part to data with the I2S form.
Step 307, step 309, in addition, control part selects the control signal of ripple device to select the ripple device that control signal is provided to voice data with the voice data of High, and comes the converting audio frequency data to select the output of ripple device with DAB I2S.
Step 311, step 313, step 315, because shunting of audio decoder with straight recording function (Line In), therefore, control part selects data the DAB voice data of ripple device output to be transformed into analogue audio frequency by DAC (digital to analog corverter), then, after decoding by audio codec again, export to audio output part such as loud speakers.
Select to use under the situation of DMB broadcasting the user, the operation of audio output device of the present invention is as follows:
Step 317, step 319, control part transmits the DMB output command by SPI to audio/video decoder, audio/video decoder is after base band part application DMB data flow, just from the base band part receiving data stream, and these data are decoded, with the 12S form data audio frequency is selected the output of ripple device to data.
The control signal that control part selects the ripple device to provide the voice data of minimum (LOW) to select the ripple device to data, and control data selects the ripple device to export to DMB I2S.Shunt the output of audio codec simultaneously to straight recording function (Line In).
Voice data selects the output of ripple device once more to outside DAC input, and is transformed into simulated audio signal, is input to the straight recording function (Line In) of the audio codec of system, and the audio signal of handling in audio codec is exported by efferent.
Use in the audio output device of mobile device in the broadcast reception of foundation the inventive method, under the situation of control audio output, at first the default audio codec to be installed, in the state that audio codec is installed, can select DAB or DMB broadcasting to listen to function according to the user.In this kind holding state, the user can select DAB/DMB broadcasting to listen to function, under a kind of situation in selecting DAB broadcasting and DMB broadcasting, just selects the ripple device to provide this broadcast data to select signal to data.Then, select the broadcast singal of selecting in the ripple device according to user's selection, and export to digital-analog convertor DAC in data.
If the user selects to select the ripple device with regard to control data under the situation of DAB audio frequency, with DAB output, and the output of shunting audio codec to straight recording function (Line In).In addition, select the user under the situation of DMB audio frequency, control data selects the ripple device to export with DMB, and shunts the output of audio codec to straight recording function (Line In).
Referring to Fig. 4, Fig. 4 is the flow chart of the broadcast reception of the embodiment of the invention with the output of the audio frequency in mobile device control embodiment.
Step 401 in the method for the present invention, at first will be installed basic default audio codec.
Step 403 judges whether DMB opens.
If step 405 is selected to use DMB by user interface, the DMB audio codec just is set.
Step 407, after carrying out the DMB function, the user just can select listening to or watching of DAB/DMB.That is, set constantly, just continue to watch DMB broadcasting or listen to DAB broadcasting.
Step 409, step 411 are selected the foundation user under the situation of DAB function, and control part generates the DAB data select signal that selects the ripple device with respect to voice data, thus just the DAB data from voice data select the ripple device outwards export,
Step 413, step 414, in addition, the user selects under the situation of DMB function in above-mentioned steps 407, just selects the ripple device that DMB is provided data select signal to voice data, and output DAB data.
More than be to illustrating that specific embodiments of the invention are carried out.Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (6)
1, a kind of broadcast reception audio output device of mobile device is characterized in that comprising:
In digital audio broadcasting and DMB audio-source, select the voice data of one of them to select the ripple device;
Selecting the audio frequency of exporting in the ripple device to be transformed into the digital-analog convertor of simulated audio signal by described data;
The audio codec that control is decoded with the audio signal that receives from above-mentioned digital-analog convertor;
Control above-mentioned audio codec and data and select the control part of the output of ripple device.
2, the broadcast reception as claimed in claim 1 audio output device of mobile device is characterized in that:
Output to above-mentioned digital-analog convertor in the above-mentioned audio codec is shunted, and supports straight recording function.
3, the broadcast reception as claimed in claim 1 audio output device of mobile device is characterized in that:
Above-mentioned audio codec is to the 3rd layer of foundation audio frequency dynamic compression, i.e. the audio signal of MP3 compression is decoded.
4, a kind of broadcast reception as claimed in claim 1 control method of the audio output device of mobile device is characterized in that comprising following step:
The step of default audio codec is set;
Select the step of digital audio broadcasting/DMB function of user;
In digital audio broadcasting and DMB DMB, select under the situation of one of them, select the ripple device to provide this broadcast data to select the step of signal to data;
Select in the ripple device in data, select the broadcast singal of user's selection and the step of exporting to digital-analog convertor.
5, the broadcast reception as claimed in claim 4 control method of the audio output device of mobile device is characterized in that:
Under the situation of foundation user-selected number word audio broadcasting audio frequency, the output signal of data being selected the ripple device is to the step of digital audio broadcasting conversion and audio codec is shunted the step of output in the mode of straight recording function.
6, the broadcast reception as claimed in claim 4 control method of the audio output device of mobile device is characterized in that:
Under the situation of foundation user-selected number word multimedia broadcasting audio frequency, the output signal of data being selected the ripple device is to the step of DMB conversion and audio codec is shunted the step of output in the mode of straight recording function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100283538A CN101098201A (en) | 2006-06-29 | 2006-06-29 | Audio output device of mobile device for broadcasting reception and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100283538A CN101098201A (en) | 2006-06-29 | 2006-06-29 | Audio output device of mobile device for broadcasting reception and control method thereof |
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| CN101098201A true CN101098201A (en) | 2008-01-02 |
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| CNA2006100283538A Pending CN101098201A (en) | 2006-06-29 | 2006-06-29 | Audio output device of mobile device for broadcasting reception and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888583A (en) * | 2012-12-06 | 2014-06-25 | 联美新视信息科技（上海）有限公司 | Mobile terminal and television accompanying sound input method |
| CN111580772A (en) * | 2013-10-22 | 2020-08-25 | 弗劳恩霍夫应用研究促进协会 | Concept of Combined Dynamic Range Compression and Lead Truncation Prevention for Audio Devices |
-
2006
- 2006-06-29 CN CNA2006100283538A patent/CN101098201A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888583A (en) * | 2012-12-06 | 2014-06-25 | 联美新视信息科技（上海）有限公司 | Mobile terminal and television accompanying sound input method |
| CN111580772A (en) * | 2013-10-22 | 2020-08-25 | 弗劳恩霍夫应用研究促进协会 | Concept of Combined Dynamic Range Compression and Lead Truncation Prevention for Audio Devices |
| CN111580772B (en) * | 2013-10-22 | 2023-09-26 | 弗劳恩霍夫应用研究促进协会 | Concept for combined dynamic range compression and guided truncation prevention for audio devices |
| US12051432B2 (en) | 2013-10-22 | 2024-07-30 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Concept for combined dynamic range compression and guided clipping prevention for audio devices |
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Open date: 20080102 |