CN100372021C - Audio signal forwarding device and method - Google Patents
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- CN100372021C CN100372021C CNB2005100057354A CN200510005735A CN100372021C CN 100372021 C CN100372021 C CN 100372021C CN B2005100057354 A CNB2005100057354 A CN B2005100057354A CN 200510005735 A CN200510005735 A CN 200510005735A CN 100372021 C CN100372021 C CN 100372021C
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Abstract
音讯转发装置，用以将一音讯播放装置输出的音讯转发至一调频收音装置而由该调频收音装置播放，该音讯转发装置包括：一音讯接收模块，自音讯播放装置接收音讯；一无线发射模块，将该音讯调变为调频收音装置可接收频段的调频音讯后发射供调频收音装置接收；一收录模块，收录调频收音装置接收调频音讯所对应播放的声音；一侦测模块，侦测收录模块所收录的声音及无线发射模块发射的调频音讯其波形是否相吻合，而依据侦测结果切换音讯转发装置的操作模式。
An audio forwarding device is used to forward the audio output by an audio playing device to a FM radio device for playing by the FM radio device. The audio forwarding device includes: an audio receiving module for receiving audio from the audio playing device; a wireless transmitting module for modulating the audio into FM audio in a frequency band that the FM radio device can receive and then transmitting it for reception by the FM radio device; a recording module for recording the sound played corresponding to the FM audio received by the FM radio device; and a detection module for detecting whether the waveforms of the sound recorded by the recording module and the FM audio transmitted by the wireless transmitting module are consistent, and switching the operation mode of the audio forwarding device according to the detection result.
Description
Technical field
The invention relates to a kind of audio signal transferring apparatus and method, but refer in particular to audio signal transferring apparatus and the method for a kind of play content of Auto-Sensing FM radio device end with corresponding switching operation modes.
Background technology
In vogue with Portable individual digital music equipment in recent years, user Chang Yu go out by bus or the way of driving in, carry as CD, MP3 player, play the music that stores in advance and listen to.Only on reality is used, when the number people went on a tour with driving, this kind pocket music playback equipment only can be listened to for a people and can't be shared usually by earphone, moreover, driver itself also can influence driving safety if listen to the music that the pocket music playback equipment is play by earphone.
So, as No. 92221029 patent in Taiwan, the frequency modulation emitter that a kind of portable music player is used is promptly disclosed, it sees through the source of sound output terminal that sound source wire connects music player by a sound source input end, with the sound import signal, then become FM receiver can receive the frequency modulated sound signal of frequency range this sound signal modulation by a frequency modulator, again with a transmission antenna with this frequency modulated sound signal with low power transmissions, receive for in-plant radio, and final these wireless loudspeaker are certainly play this sound signal.Thus, the music signal of the former broadcast of pocket music playback equipment can be play by radio loudspeaker existing on the car by the modulation and the emission of this frequency modulation emitter, go up the shared also unlikely traffic safety that influences of all passengers and can buy car in installments, and this vehicle-mounted radio also need not through any repacking.
The use of above-mentioned frequency modulation emitter is also derived relevant inconvenient, for example work as the user radio channels on the car is switched to other channel or shutdown, that is no longer listen to by the pocket music playback equipment and produced and when being emitted on the car wireless music content by the frequency modulation emitter, often carelessness and do not close the power supply of this frequency modulation emitter relatively, and cause insignificant lasting power consumption, otherwise, if the man-hour of driving is only arranged on the car, its action of closing this frequency modulation emitter power supply also may influence being absorbed in of its driving and cause driving dangerous.
Summary of the invention
The object of the present invention is to provide audio signal transferring apparatus and the method for a kind of play content of Auto-Sensing FM radio device end with corresponding switching operation modes.
An of the present invention purpose is to provide a kind of and can enters an audio signal transferring apparatus and a method than electricity-saving operation mode automatically when the FM radio device end shuts down or plays other content.
Another object of the present invention is to provide a kind of can and need not the people be the audio signal transferring apparatus and the method for switching on and shutting down from FM radio device end play content switching movingly.
For achieving the above object, audio signal transferring apparatus provided by the invention is forwarded to a FM radio device and is play by this FM radio device in order to the message with message playing device output, and this audio signal transferring apparatus comprises:
One message receiver module, this message playing device receives this message certainly;
One wireless transmitter module is tuned as the frequency modulation message that this FM radio device can receive frequency range with this message, and this frequency modulation message emission is received for this FM radio device;
One includes module, include this FM radio device receive this frequency modulation message the corresponding sound of playing;
One detecting module is detected this and is included this sound that module includes and whether this its waveform of frequency modulation message of this wireless transmitter module emission matches, and switches the operator scheme of this audio signal transferring apparatus according to the detecting result.
Described audio signal transferring apparatus, wherein this detecting module is to detect under one first pattern, and switches this audio signal transferring apparatus to one second pattern according to the detecting result.
Described audio signal transferring apparatus, wherein this message receiver module, wireless transmitter module under this first pattern, include module and detecting module is located at mode of operation, when the detecting result of this detecting module when misfitting, promptly control this audio signal transferring apparatus and switch to this second pattern, under this second pattern this message receiver module, wireless transmitter module, include module and all shut-down operations of detecting module, and activated in a predetermined interval and operate a Preset Time.
Described audio signal transferring apparatus, wherein when this detecting module in this predetermined interval activated and its detecting result when coincideing, promptly switch this audio signal transferring apparatus to this first pattern.
Described audio signal transferring apparatus, wherein this message receiver module, wireless transmitter module under this first pattern, include module and detecting module is located at mode of operation, when the detecting result of this detecting module when misfitting, promptly control this audio signal transferring apparatus and switch to this second pattern, under this second pattern this message receiver module, wireless transmitter module, include module and all shut-down operations of detecting module.
Message playback equipment with message forwarding capability provided by the invention is transmitted and is received and play by a FM radio device in order to the message that will itself produce, and this message playback equipment comprises:
One wireless transmitter module is tuned as the frequency modulation message that this FM radio device can receive frequency range with this message, and this frequency modulation message emission is received for this FM radio device;
One includes module, include this FM radio device receive this frequency modulation message the corresponding sound of playing;
One detecting module is detected this and is included this sound that module includes and whether this its waveform of frequency modulation message of this wireless transmitter module emission matches, and switches the operator scheme of this message playback equipment according to the detecting result.
Described message playback equipment, wherein this detecting module is to detect under one first pattern, and switches this audio signal transferring apparatus to one second pattern according to the detecting result.
Described message playback equipment, wherein this message receiver module, wireless transmitter module under this first pattern, include module and detecting module is located at mode of operation, when the detecting result of this detecting module when misfitting, promptly control this message playback equipment and switch to this second pattern, under this second pattern this message receiver module, wireless transmitter module, include module and all shut-down operations of detecting module, and activated in a predetermined interval and operate a Preset Time.
Described message playback equipment, wherein when this detecting module in this predetermined interval activated and its detecting result when coincideing, promptly switch this message playback equipment to this first pattern.
Described message playback equipment, wherein this message receiver module, wireless transmitter module under this first pattern, include module and detecting module is located at mode of operation, when the detecting result of this detecting module when misfitting, promptly control this message playback equipment and switch to this second pattern, under this second pattern this message receiver module, wireless transmitter module, include module and all shut-down operations of detecting module.
Provided by the invention kind of message retransmission method is forwarded to a FM radio device and play by this FM radio device in order to the message with message playing device output, and this method comprises the steps:
A. receive this message from this message playing device;
B. this message is tuned as the frequency modulation message that this FM radio device can receive frequency range;
C. this frequency modulation message emission is received for this FM radio device;
D. include this FM radio device receive this frequency modulation message the corresponding sound of playing;
Whether e. detect its waveform of frequency modulation message that sound that steps d includes and step c launched matches;
F. detect switching operation modes as a result according to this.
Described message retransmission method, wherein step e comprises step following time:
E1. the waveform of the recording step c frequency modulation message of being launched;
E2. analyze the waveform that this FM radio device plays sound;
Whether e3. compare the waveform that step e1 and e2 obtain respectively matches.
Described message retransmission method, wherein this detecting result criterion that whether coincide is adjustable among the step e.
Described message retransmission method, wherein this detecting module is to detect under one first pattern among the step e, then switches to one second pattern according to the detecting result among the step f.
Described message retransmission method, wherein step a to e continues to carry out under this first pattern, when this detecting result when misfitting, promptly enter step f and switch to this second pattern, this step a to e stops to carry out under this second pattern, and carries out step a to e one Preset Time again in a predetermined interval.
Described message retransmission method wherein when its detecting result is identical under this predetermined interval, promptly switches to this first pattern.
Described message retransmission method, wherein step a to e continues to carry out under this first pattern, when this detecting result when misfitting, promptly enter step f and switch to this second pattern, this step a to e stops to carry out under this second pattern.
Description of drawings
The system architecture synoptic diagram that Fig. 1 is made of jointly audio signal transferring apparatus preferred embodiment of the present invention and a message playing device and a FM radio device;
Fig. 2 is the main modular square configuration figure of this audio signal transferring apparatus preferred embodiment;
Fig. 3 is the main implementation step process flow diagram of message retransmission method of the present invention preferred embodiment.
Embodiment
Technology contents of the present invention and effect will elaborate in following conjunction with figs. and preferred embodiment.
As shown in Figure 1, 2, the preferred embodiment of audio signal transferring apparatus 1 of the present invention, comprise that mainly a message receiver module 11, a wireless transmitter module 12, include module 13, a detecting module 14 and a power module 15, and be forwarded to a FM radio device 3 by wireless carrier in order to message (audio signal) with a message playing device 2 outputs, listen to play for the user by FM radio device 3.
3 in FM radio device is an example with a known automobile-used radio that is fixedly installed in vehicle, and comprise that mainly one receives the fremodyne 31 of plural channel frequency modulation signal, and one receives fremodyne 31 and the loudspeaker 32 of the frequency modulation signal broadcast after suitable processing.In other changed example, FM radio device 3 can also be installed on other place, place or for Portable designs, and itself also can be further combined with as CD, sound recorded book strip sowing or other playing function.Because FM radio device 3 belongs to the also non-emphasis of the present invention of known design, its ins and outs are in this not elsewhere specified (NES).
The source of sound receiver module 11 of audio signal transferring apparatus 1, the message output interface 21 that cooperates above-mentioned message playing device 2 stereo sounds output telephone socket form, and mainly have one in order to message output interface 21 machinery and the stereo sound message input interface 111 that electrically connects, reach a control circuit 112 according to stereo sound input standard control message input interface 111 data transmission, that is transmit message from message playing device 2 through the transmission interface of stereo sound form.In other changes example, other form and the output, the incoming interface 21,111 that match comprise that aforementioned S/PDIF, blue bud (blue-tooth) transmission interface or other suitable wired or wireless transmission mode are all applicable.
Include module 13 and mainly have a microphone 131 and a message treatment circuit 132, microphone 131 is the sound of being play for the loudspeaker 32 of including FM radio device 3, and be arranged near loudspeaker 32 outputs place preferablely in using, influence the correctness of follow-up detecting module 14 runnings to avoid including external noise.132 simulating music signal that microphone 131 is included of message treatment circuit suitably are treated to the digital signal that utilizes for detecting module 14.
Detecting module 14 mainly has a lasting record is emitted to the frequency modulation message waveform of FM radio device 3 from wireless transmitter module 12 kymograph 141 in the present embodiment, the waveform that one wave analyzer 142, one lasting comparison wave analyzer 142 analyses that continue analysis FM radio device 3 output sound waveforms obtain and the waveform comparative device 143 of 141 wave recordings of kymograph reach a mode switch 144 that makes audio signal transferring apparatus 1 switch between one first pattern and one second pattern.The frequency modulation message waveform and the wave analyzer 142 of 12 emissions of kymograph 141 record wireless transmitter modules are analyzed the mode of FM radio device 3 output sound waveforms because of belonging to known technology, in this not elsewhere specified (NES).
Since from wireless transmitter module 12 emission frequency modulation message to FM radio device 3 so that the corresponding sound of FM radio device 3 outputs, one small delay will be arranged on the time, when so waveform comparative device 143 is analyzed the waveform of the waveform that obtains and kymograph 141 records in comparison wave analyzer 142, to allow that a Preset Time is poor, two waveforms that obtained respectively by waveform comparative device 143 and wave analyzer 142 in this mistiming will be compared automatically.Whether comparison result is judged to be to coincide then determines according to the criterion of user's adjustable settings, when microphone 131 sound of including module 13 are included the position when being arranged at loudspeaker 32 sound playing positions near FM radio device 3, because the noise of including is less, so the user can be made as the criterion that aforementioned comparison result coincide tighter, otherwise, when microphone 131 is arranged at from loudspeaker 32 microphone 131 may be included as driving engine sound, passenger's dialogue sound, during outside noises such as sound of the wind, the user then can be made as the criterion that comparison result coincide looser, in order to avoid all can't obtain to be judged to be identical comparison result under the most of the time.
First mode-definition is message receiver module 11, wireless transmitter module 12, includes the state that module 13 and detecting module 14 are located at operation in the present embodiment, once the waveform result that waveform comparative device 143 comparison wave analyzers 142 are analyzed the waveform that obtains and kymograph 141 records is when coincideing, then waveform comparative device 143 will continue to compare, that is maintain first pattern; And its result of waveform who analyzes the waveform that obtains and kymograph 141 records when waveform comparative device 143 comparison wave analyzers 142 is when misfitting, that is the user may switch to FM radio device 3 receiving channelss different with the message channel of audio signal transferring apparatus 1 emission, or changed to listen as other source of sound such as CD or shut down and stop to listen to, waveform comparative device 143 will send signal to mode switch 144, by mode switch 144 audio signal transferring apparatus 1 is switched second pattern that enters, under second pattern, message receiver module 11, wireless transmitter module 12, include module 13 and all shut-down operations of detecting module 14, and activated again in a predetermined interval (for example 1 minute) and operate one section Preset Time (for example 5 seconds).In this section Preset Time when detecting module 14 activated and the detecting result of waveform comparative device 143 when coincideing, waveform comparative device 143 will send signal to mode switch 144, by mode switch 144 audio signal transferring apparatus 1 be switched aforementioned first pattern that enters; If the detecting result of waveform comparative device 143 is when misfitting, then audio signal transferring apparatus 1 still is maintained at second pattern, and detecting module 14 is detected comparison once more when next predetermined interval arrival.
In other words, each module 11 to 14 all keeps operation under above-mentioned first pattern, when the corresponding sound waveform comparison result that is emitted to the frequency modulation message of FM radio device 3 and 3 outputs of FM radio device until wireless transmitter module 12 is misfitted, then enter second pattern, in each module 11 to 14 shut-down operation of the second following most of the time of pattern to save electric power, only activated and operate one section Preset Time in predetermined interval beginning, if the user has switched to FM radio device 3 receiving channelss identically with the message channel of audio signal transferring apparatus 1 emission again under this Preset Time, promptly reenter aforementioned first pattern and continue operation.
In the variation example of other simplification, second pattern also can be set at each module 11 to 14 and keep shut-down operation, and is non-through the then no longer automatic start-up operation of user's startup.
Cooperate simultaneously shown in the process flow diagram of Fig. 3, corresponding above-mentioned audio signal transferring apparatus 1, the present invention also describes a kind of message retransmission method, be forwarded to FM radio device 3 in order to message with 2 outputs of message playing device, and play by FM radio device 3, the main implementation step division of its preferred embodiment is as follows;
At first shown in step 901, beginning to be set in first pattern in running, and receive this message from message playing device 2, is to transmit this message in wired mode in the present embodiment; Shown in the step 902,903, this message is tuned as the frequency modulation message that FM radio device 3 can receive frequency range for another example, then this frequency modulation message emission is received for FM radio device 3; Shown in step 904, include the sound that FM radio device 3 receives the corresponding broadcast of institute after these frequency modulation message; Step 905 is to shown in 907 for another example, the waveform of the frequency modulation message that recording step 903 is launched, and analyze the waveform that FM radio device 3 plays sound, whether then compare the waveform that step 905 and 906 obtains respectively matches, and the criterion that whether step 907 detecting result coincide in present embodiment can be included the distance between the sound playing position of position and this FM radio device and adjusted by the user according to the sound in the step 904; Shown in step 908,909, when the detecting result coincide, then continue to carry out aforementioned each step, and when the detecting result misfits, promptly enter second pattern, make message receiver module 11, wireless transmitter module 12, include module 13 and all shut-down operations of detecting module 14, and activated again in a predetermined interval and operate one section Preset Time; At last shown in step 910, in this section Preset Time when the detecting result of waveform comparative device 143 when coincideing, by mode switch 144 audio signal transferring apparatus 1 is switched aforementioned first pattern that enters; If the detecting result of waveform comparative device 143 is when misfitting, then audio signal transferring apparatus 1 still is maintained at second pattern, and detecting module 14 is detected comparison once more when next predetermined interval arrival.
In sum, audio signal transferring apparatus 1 provided by the invention and corresponding method thereof, except that the message that has 2 outputs of message playing device is forwarded to FM radio device 3 for the basic function of its broadcast by wireless carrier, whether and it is identical to compare audio signal transferring apparatus 1 output message and FM radio device 3 waveform that plays sound, both misfit the interval scale user and FM radio device 3 receiving channelss have been switched to different with the message channel of audio signal transferring apparatus 1 emission, or changed to listen other source of sound or shut down and stop to listen to, and can make audio signal transferring apparatus 1 enter another pattern automatically, not only can save the manually inconvenience of shutdown of user, also can effectively save the electric power that expends under its no effect; And under this operator scheme than power saving, also can compare according to a predetermined interval Auto-Sensing, and when the user switches to audio signal transferring apparatus 1 same channel with FM radio device 3 receiving channelss once more, return back to previous each module from command of execution audio signal transferring apparatus 1 and continue operating mode, to provide FM radio device 3 message source as quickly as possible for its broadcast.
More broadly, change in the aspect in other, also the function that audio signal transferring apparatus 1 can be possessed is combined in message playing device 2 with circuit or alternate manner, common formation one has the message playback equipment of message forwarding capability, 11 of the message receiver modules of audio signal transferring apparatus 1 change directly to interrogate in the radio reception of message playback equipment internal interface, and its aspect is not taken off essence technology category of the present invention.
The foregoing description is only given an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claim is described certainly, but not only limits to the foregoing description.
Claims (17)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100057354A CN100372021C (en) | 2005-01-24 | 2005-01-24 | Audio signal forwarding device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100057354A CN100372021C (en) | 2005-01-24 | 2005-01-24 | Audio signal forwarding device and method |
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| CN1655275A CN1655275A (en) | 2005-08-17 |
| CN100372021C true CN100372021C (en) | 2008-02-27 |
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| CNB2005100057354A Expired - Fee Related CN100372021C (en) | 2005-01-24 | 2005-01-24 | Audio signal forwarding device and method |
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| US8655351B2 (en) * | 2006-11-23 | 2014-02-18 | Nokia Corporation | Method and device for maintaining continuity of radio transmissions |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1221260A (en) * | 1997-10-09 | 1999-06-30 | 索尼公司 | Transmitter and automobile audio apparatus using the same |
| CN1258874A (en) * | 1998-12-31 | 2000-07-05 | 神基科技股份有限公司 | Power saving device and control method for audio signal processing circuit |
| US6564071B1 (en) * | 1992-01-13 | 2003-05-13 | Microcom Systems, Inc. | Transmission of data over a radio frequency channel |
| CN2613855Y (en) * | 2002-12-26 | 2004-04-28 | 怡利电子工业股份有限公司 | Digital music player |
| CN1501211A (en) * | 2002-11-12 | 2004-06-02 | 达方电子股份有限公司 | Power saving device for wireless input equipment |
-
2005
- 2005-01-24 CN CNB2005100057354A patent/CN100372021C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6564071B1 (en) * | 1992-01-13 | 2003-05-13 | Microcom Systems, Inc. | Transmission of data over a radio frequency channel |
| CN1221260A (en) * | 1997-10-09 | 1999-06-30 | 索尼公司 | Transmitter and automobile audio apparatus using the same |
| CN1258874A (en) * | 1998-12-31 | 2000-07-05 | 神基科技股份有限公司 | Power saving device and control method for audio signal processing circuit |
| CN1501211A (en) * | 2002-11-12 | 2004-06-02 | 达方电子股份有限公司 | Power saving device for wireless input equipment |
| CN2613855Y (en) * | 2002-12-26 | 2004-04-28 | 怡利电子工业股份有限公司 | Digital music player |
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