CN101854423A - Shared interface deice of CMMB (China Mobile Multimedia Broadcasting) antenna and earphone and identifying method thereof - Google Patents
Shared interface deice of CMMB (China Mobile Multimedia Broadcasting) antenna and earphone and identifying method thereof Download PDFInfo
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- CN101854423A CN101854423A CN200910048792A CN200910048792A CN101854423A CN 101854423 A CN101854423 A CN 101854423A CN 200910048792 A CN200910048792 A CN 200910048792A CN 200910048792 A CN200910048792 A CN 200910048792A CN 101854423 A CN101854423 A CN 101854423A
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Abstract
The invention discloses a shared interface deice of a CMMB antenna and an earphone and an identifying method thereof. The shared interface device comprises an analog switch, a 3.5mm earphone socket and a 10pin earphone interface, wherein the 3.5mm earphone socket is used for inserting a 3.5mm earphone or the CMMB antenna and connected with the output end of the analog switch, and the 10pin earphone interface is used for inserting a 10pin earphone and connected with the input end of the analog switch. The invention can realize the functions of sharing the CMMB antenna and a 3.5mm earphone interface and automatically identifying the CMMB antenna and the 3.5mm earphone by a mobile phone system, thereby lowering the cost.
Description
Technical field
The present invention relates to a kind of handset port technology, particularly relate to the shared interface device and the recognition methods thereof of a kind of CMMB antenna and earphone.
Background technology
CMMB (China Mobile Multimedia Broadcasting, China Mobile's DMB) adopts digital technologies such as advanced coding, compression, modulation, aim at 7 cun portable receiving terminals of following size screen TV services is provided, have the not available technical characterstics of conventional digital TV such as the reception of moving, efficient power saving.A hand-held display terminal adds the CMMB receiving chip, adds a CMMB antenna, just can become a CMMB terminal, just can realize receiving the function of radio and television services whenever and wherever possible.
So-called 3.5mm interface: the i.e. standard earplug interface of walkman, MP3, CD player and computer earphone etc.3.5mm earphone will be got well more than 2.5mm interface earphone the playback effect of music, and also extensively is used on the multiple music walkman at present.Compatible 3.5mm earphone socket is a good attraction on the mobile phone, and existing mobile phone products is commonly and uses 10pin (pin) interface, compatible download line, USB line and earphone cord.But concerning the user, the effect that the earphone cord of 10pin is listened to the music does not have too many characteristics.If compatible 3.5mm earphone socket, the user can use the 3.5mm earphone of specialty to obtain good music effect.
But in the market, CMMB antennal interface and 3.5mm earphone interface do not integrate.Because the cell phone mainboard space is limited, mobile phone uses two interfaces to realize relatively difficulty of CMMB antennal interface and 3.5mm earphone interface respectively, so compatible if desired CMMB function and 3.5mm earphone interface must solve the problem of identification automatically.
Summary of the invention
The technical problem to be solved in the present invention is in order to overcome the defective that CMMB antennal interface and 3.5mm earphone interface can not integrate in the prior art, shared interface device and the recognition methods and the recognition methods thereof of a kind of CMMB antenna and earphone are provided, it can realize CMMB antennal interface and the shared function of 3.5mm earphone interface, and the realization cell phone system is discerned the function of CMMB antenna and 3.5mm earphone automatically.
The present invention solves above-mentioned technical problem by following technical proposals: the shared interface device of a kind of CMMB antenna and earphone, it is characterized in that, it comprises an analog switch, 3.5mm earphone socket and 10pin earphone interface, this 3.5mm earphone socket is used to insert 3.5mm earphone or CMMB antenna and is connected with the output of analog switch, and this 10pin earphone interface is used to insert the 10pin earphone and is connected with the input of analog switch.
Preferably, this 3.5mm earphone socket has six pins.
Preferably, after this CMMB antenna inserted the 3.5mm earphone socket, first three pin of 3.5mm earphone socket was unsettled, back three pin ground connection.
Preferably, this CMMB antenna is divided into three sections, and second section radius is 2.5mm.
Preferably, first section of this CMMB antenna be shaped as polygon, being shaped as of second section and the 3rd section is cylindric.
Preferably, after this 3.5mm earphone inserted the 3.5mm earphone socket, first pin of this 3.5mm earphone socket was a R channel, and the second and the 3rd pin is unsettled, and the 4th pin is a L channel, and the 5th and the 6th pin is a ground connection.
Another technical scheme of the present invention is: the recognition methods of the shared interface device of a kind of CMMB antenna and earphone, and it is discerned and may further comprise the steps by three interrupt signals:
S1: insert 10pin earphone or 3.5mm earphone or CMMB antenna and produce interrupt signal;
S2: detect interrupt signal by a baseband processing chip;
Whether S3: detecting first interrupt signal is low level, if be low level, then the 3.5mm earphone socket has 3.5mm earphone or CMMB antenna to insert, and execution in step S5, if first interrupt signal is a high level, and execution in step S4 then;
S4: continuing to detect whether the 3rd interrupt signal is low level, if low level judges that then the 10pin earphone inserts the 10pin earphone interface, is high level if detect the 3rd interrupt signal, then turns back to step S2, continues to detect interrupt signal;
S5: whether if first interrupt signal is a low level, then continuing second interrupt signal is high level, if second interrupt signal is a high level, and execution in step S6 then, if second interrupt signal is a low level, execution in step S7 then;
S6: continue to detect whether the 3rd interrupt signal is low level, if low level judges that then the CMMB antenna inserts the 3.5mm earphone socket; If the 3rd interrupt signal is a high level, judge that then the CMMB antenna inserts the 3.5mm earphone socket and the 10pin earphone inserts the 10pin earphone interface;
S7: continue to detect whether the 3rd interrupt signal is low level, if low level judges that then the 3.5mm earphone inserts the 3.5mm earphone socket and the 10pin earphone inserts the 10pin earphone interface; If the 3rd interrupt signal is a high level, judge that then the 3.5mm earphone inserts the 3.5mm earphone socket.
Preferably, the priority of this first interrupt signal is greater than the priority of second interrupt signal, and the priority of this second interrupt signal is greater than the priority of the 3rd interrupt signal.
Preferably, when this second interrupt signal was low level, analog switch was opened; When this second interrupt signal was high level, analog switch cut out.
Preferably, when this second interrupt signal was low level, this 3.5mm earphone inserted the 3.5mm earphone socket.
Positive progressive effect of the present invention is: the present invention not only has the function of regular handset, can also carry out the reception of CMMB program and use the 3.5mm ear-phone function, thereby reduce cost.
Description of drawings
Fig. 1 is a mobile phone concrete structure schematic diagram of the present invention.
Fig. 2 is the shared interface device overall structure schematic diagram of CMMB antenna of the present invention and earphone.
Fig. 3 is the schematic diagram of 3.5mm earphone socket of the present invention.
Fig. 4 is the structural representation of CMMB antenna of the present invention.
Fig. 5 is for adopting the flow chart as the recognition methods of Fig. 2 shared interface device.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
As shown in Figure 1, mobile phone of the present invention comprises mobile phone base band chip 11, CMMB DSP (DigitalSignal Processing, digital signal processor) chip 12, LCD MODULE 13 (LCM, LCDModule), T flash memory (Flash) card 14, CMMB chip 15, CMMB antenna 16,3.5mm earphone 17 and shared interface device 18, wherein this mobile phone base band chip 11 is connected with T flash card 14 with CMMB dsp chip 12, CMMB dsp chip 12 is connected with CMMB chip 15 with LCD MODULE 13, CMMB dsp chip 12 control CMMB chips 15 are realized the CMMB function, CMMB chip 15 receives the CMMB signal by CMMB antenna 16, through handling transfer of data to CMMB dsp chip 12, refresh on LCD MODULE 13, thereby watch the CMMB TV programme.Can realize Real files in stream media video and voice playing by CMMB dsp chip 12, by CMMB dsp chip 12 and CMMB chip 15, can realize that the CMMB program receives, this mobile phone base band chip 11 comprises graphics processing unit 111, Data Control interface 112 and audio treatment unit 113, Data Control interface 112 by baseband processing chip 11 carries out Play Control and the transfer of data to CMMB dsp chip 12, video interface by CMMB dsp chip 12 is connected on the graphics processing unit 111 of baseband processing chip 11, realize the video playback of RMVB file, realize voice playing by audio treatment unit 113.
CMMB antenna 16 can be connected with shared interface arrangement 18 with 3.5mm earphone 17, this shared interface device 18 also is connected with audio treatment unit 113 with CMMB chip 15, arrange in pairs or groups standardized 3.5mm earphone 17 of cell phone system has brought convenience to the consumer, the user can use the 3.5mm earphone of standard, obtaining good music enjoys, insertion 3.5mm earphone can carry out music, earphone is made a phone call or listen to FM, and it is divided into syllogic, is respectively L channel, R channel and ground.Wherein L channel, R channel connect 32 ohm respectively to ground at the earphone end; CMMB antenna 16 can receive the CMMB signal, and the CMMB antenna is an incorporate antenna, integral ground.As shown in Figure 2, shared interface device 18 comprises an analog switch 181,3.5mm earphone socket 182 and 10pin (pin) earphone interface 183,3.5mm the first, the 4th pin of earphone socket 182 is connected with output OUT1, the OUT2 of analog switch 181 respectively, 10pin (pin) earphone interface 183 is connected with input IN1, the IN2 of analog switch 181.
Wherein the pin of 3.5mm earphone socket as shown in Figure 3, before not inserting 3.5mm earphone or CMMB antenna, first pin 1 of 3.5mm earphone socket and the interconnection of second pin 2, the 3rd pin 3 and 4 interconnection of the 4th pin; After inserting 3.5mm earphone or CMMB antenna, first pin 1 and second pin 2 disconnect, and the 3rd pin 3 and the 4th pin 4 disconnect, and detect to insert and can select the 1st, 4,6 pins as interrupting detection signal.But from the definition of CMMB antenna and 3.5mm earphone, to tell relatively difficulty of 0 ohm and 32 ohm on the hardware, can only tell interface and insert, but can not discern CMMB antenna and 3.5mm earphone.In order to address this problem, as shown in Figure 4, first section 41, second sections 42 and the 3rd sections 43 respectively on CMMB antenna, from trying every possible means in shape of CMMB antenna, the shape of second section 42 on CMMB antenna is contracted toward in, change radius 2.5mm into from radius 3.5mm, thereby guarantee that second section can not touch first pin 1 when the CMMB antenna inserts, thereby first pin 1 is NC (unsettled or do not connect No Connection).Because the CMMB antenna after the improvement, second section 42 diameter has changed 2.5mm into from 3.5mm, the contact area of antenna and 3.5mm earphone socket reduces, it is relatively more loose after antenna inserts, can in socket, rotate, therefore decision is made polygon (such as pentagon etc.) with first section 41 shape, increases frictional force, make antenna be fixed well in earphone base, it is original cylindric that the shape of second section 42 and the 3rd section 43 still keeps.
Like this, it is as shown in table 1 below that CMMB antenna and 3.5mm earphone heads are inserted back pinout difference:
Table 1CMMB antenna and 3.5mm earphone insert the annexation of rear socket pin
Wherein, as described in Table 1, CMMB antenna and 3.5mm earphone all comprise three sections, and behind CMMB antenna insertion 3.5mm earphone socket, first to the 3rd pin of 3.5mm earphone socket is unsettled (NC), and the 4th to the 6th pin is ground connection (GND); And with behind the 3.5mm earphone insertion 3.5mm earphone socket, first pin of 3.5mm earphone socket is a R channel, and the second and the 3rd pin is unsettled (NC), and the 4th pin is a L channel, and the 5th and the 6th pin is ground connection (GND).
Insert in order to discern CMMB antenna, 10pin earphone and 3.5mm earphone, need to use three interrupt signals.As shown in Figure 3, the first interrupt signal EINT_3.5 connects the 6th pin 6 of 3.5mm earphone socket, as long as the 3.5mm earphone socket has plug to insert, the first interruption EINT_3.5 is a low level just, 3.5mm move VDD (operating voltage of device inside) on the 4th pin of earphone socket to, export the second interrupt signal EINT_HEADSET3.5 by a diode.The second interrupt signal EINT_HEADSET3.5 is simultaneously as the EN that enables of control analog switch 181, and the L channel MP3_IOL that whether switches two 3.5mm earphone sockets and 10pin earphone interface links to each other with R channel MP3_IOR.Before the 3.5mm earphone did not insert, the second interrupt signal EINT_HEADSET3.5 was a high level, thus analog switch 181 close, the left and right acoustic channels of 10pin earphone interface does not link to each other with the left and right acoustic channels of 3.5mm earphone.As long as the 3.5mm earphone inserts, the second interrupt signal EINT_HEADSET3.5 is output as low level, thus analog switch 181 open, guarantee that the left and right acoustic channels of 3.5mm earphone is normal.Whether the 3rd interrupt signal EINT_HEADSET10 is used for detection is that the 10pin earphone inserts.Enabling of analog switch is extremely important, and enabling EN is that low level is effective.Under idle condition, the second interrupt signal EINT_HEADSET3.5 is a high level, and analog switch cuts out.Have only when inserting the 3.5mm earphone, the second interrupt signal EINT_HEADSET3.5 is a low level, and this moment, analog switch was opened.The signal that has guaranteed left and right acoustic channels can normally output to the 3.5mm earphone.When the insertion of CMMB antenna, analog switch must cut out, thereby if guarantees that the 10pin earphone interface has the 10pin earphone to insert and also can normally use.
The priority of three interrupt signals must be established, and the first interrupt signal EINT_3.5 is a limit priority, and the priority of the second interrupt signal EINT_HEADSET3.5 is greater than the priority of the 3rd interrupt signal EINT_HEADSET10.When detecting interrupt signal, must detect the level of the first interrupt signal EINT_3.5 earlier, detect the state of the second interrupt signal EINT_HEADSET3.5 then, detect the state of the 3rd interrupt signal EINT_HEADSET10 at last.Whether after cell phone system detects interrupt signal, detecting the first interrupt signal EINT_3.5 earlier is low level, if be low level, illustrates that the 3.5mm earphone socket has joint to insert.If be low level, then continue to detect whether the second interrupt signal EINT_HEADSET3.5 is low level, if, then can judge and insert the 3.5mm earphone, continue to detect whether the 3rd interrupt signal EINT_HEADSET10 is low level, if then insert 3.5mm earphone and 10pin earphone simultaneously, otherwise only inserted the 3.5mm earphone; If the second interrupt signal EINT_HEADSET3.5 is a high level, then can be judged as the CMMB antenna and insert, continue to detect whether the 3rd interrupt signal EINT_HEADSET10 is low level, thereby determine whether to have simultaneously the 10pin earphone to insert.If EINT_3.5 is a high level, then continue to detect the 3rd interrupt signal EINT_HEADSET10, if the 3rd interrupt signal EINT_HEADSET10 is a low level, then can be judged as and has only the 10pin earphone to insert.For mobile phone, no matter be that the 10pin earphone inserts or the 3.5mm earphone inserts, mobile phone all is operated in headset mode.
As shown in Figure 5, the recognition methods of shared interface device of the present invention may further comprise the steps:
Step 101: produce interrupt signal after inserting 10pin earphone or 3.5mm earphone or CMMB antenna, after needing only 3.5mm earphone insertion 3.5mm earphone socket, because the first interrupt signal EINT_3.5 connects the 6th pin 6 of 3.5mm earphone socket, will produce low level first and interrupt EINT_3.5;
Step 102: detect interrupt signal by baseband processing chip;
Whether step 103: detecting the first interrupt signal EINT_3.5 is low level, if be low level (being EINT_3.5=0), then the 3.5mm earphone socket has 3.5mm earphone or CMMB antenna to insert, and execution in step 105, if the first interrupt signal EINT_3.5 is high level (being that EINT_3.5 is not equal to 0), then execution in step 104;
Step 104: continue to detect whether the 3rd interrupt signal EINT_HEADSET10 is low level, if low level (being EINT_HEADSET10=0), judge that then the 10pin earphone inserts the 10pin earphone interface, if detecting the 3rd interrupt signal EINT_HEADSET10 is high level, then turn back to step 102, continue to detect interrupt signal;
Step 105: if the first interrupt signal EINT_3.5 is a low level, whether then continue the second interrupt signal EINT_HEADSET3.5 is high level, if the second interrupt signal EINT_HEADSET3.5 is a high level, then execution in step 106, and this moment, analog switch cut out; If the second interrupt signal EINT_HEADSET3.5 is low level (EINT_HEADSET3.5=0), then execution in step 107, and this moment, analog switch was opened;
Step 106: continue to detect whether the 3rd interrupt signal EINT_HEADSET10 is low level, if low level (being EINT_HEADSET10=0) judges that then the CMMB antenna inserts the 3.5mm earphone socket and the 10pin earphone inserts the 10pin earphone interface; If the 3rd interrupt signal EINT_HEADSET10 is a high level, judge that then the CMMB antenna inserts the 3.5mm earphone socket;
Step 107: continue to detect whether the 3rd interrupt signal EINT_HEADSET10 is low level, if low level (being EINT_HEADSET10=0) judges that then the 3.5mm earphone inserts the 3.5mm earphone socket and the 10pin earphone inserts the 10pin earphone interface; If the 3rd interrupt signal EINT_HEADSET10 is a high level, judge that then the 3.5mm earphone inserts the 3.5mm earphone socket.
Therefore, can discern by above method is to insert 10pin earphone or 3.5mm earphone or CMMB antenna, specifically as described in Table 2:
Table 2: the state table of five kinds of following three interrupt signals of situation
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these execution modes.Therefore, protection scope of the present invention is limited by appended claims.
Claims (10)
1. the shared interface device of CMMB antenna and earphone, it is characterized in that, it comprises an analog switch, 3.5mm earphone socket and 10pin earphone interface, this 3.5mm earphone socket is used to insert 3.5mm earphone or CMMB antenna and is connected with the output of analog switch, and this 10pin earphone interface is used to insert the 10pin earphone and is connected with the input of analog switch.
2. the shared interface device of CMMB antenna as claimed in claim 1 and earphone is characterized in that, this 3.5mm earphone socket has six pins.
3. the shared interface device of CMMB antenna as claimed in claim 2 and earphone is characterized in that, after this CMMB antenna inserted the 3.5mm earphone socket, first three pin of 3.5mm earphone socket was unsettled, back three pin ground connection.
4. the shared interface device of CMMB antenna as claimed in claim 3 and earphone is characterized in that, this CMMB antenna is divided into three sections, and second section radius is 2.5mm.
5. the shared interface device of CMMB antenna as claimed in claim 4 and earphone is characterized in that, first section of this CMMB antenna be shaped as polygon, being shaped as of second section and the 3rd section is cylindric.
6. the shared interface device of CMMB antenna as claimed in claim 2 and earphone, it is characterized in that, after this 3.5mm earphone inserts the 3.5mm earphone socket, first pin of this 3.5mm earphone socket is a R channel, the second and the 3rd pin is unsettled, the 4th pin is a L channel, and the 5th and the 6th pin is a ground connection.
7. the recognition methods to the shared interface device of CMMB antenna as claimed in claim 1 and earphone is characterized in that, it is discerned and may further comprise the steps by three interrupt signals:
S1: insert 10pin earphone or 3.5mm earphone or CMMB antenna and produce interrupt signal;
S2: detect interrupt signal by a baseband processing chip;
Whether S3: detecting first interrupt signal is low level, if be low level, then the 3.5mm earphone socket has 3.5mm earphone or CMMB antenna to insert, and execution in step S5, if first interrupt signal is a high level, and execution in step S4 then;
S4: continuing to detect whether the 3rd interrupt signal is low level, if low level judges that then the 10pin earphone inserts the 10pin earphone interface, is high level if detect the 3rd interrupt signal, then turns back to step S2, continues to detect interrupt signal;
S5: whether if first interrupt signal is a low level, then continuing second interrupt signal is high level, if second interrupt signal is a high level, and execution in step S6 then, if second interrupt signal is a low level, execution in step S7 then;
S6: continue to detect whether the 3rd interrupt signal is low level, if low level judges that then the CMMB antenna inserts the 3.5mm earphone socket and the 10pin earphone inserts the 10pin earphone interface; If the 3rd interrupt signal is a high level, judge that then the CMMB antenna inserts the 3.5mm earphone socket;
S7: continue to detect whether the 3rd interrupt signal is low level, if low level judges that then the 3.5mm earphone inserts the 3.5mm earphone socket and the 10pin earphone inserts the 10pin earphone interface; If the 3rd interrupt signal is a high level, judge that then the 3.5mm earphone inserts the 3.5mm earphone socket.
8. recognition methods as claimed in claim 7 is characterized in that, the priority of this first interrupt signal is greater than the priority of second interrupt signal, and the priority of this second interrupt signal is greater than the priority of the 3rd interrupt signal.
9. recognition methods as claimed in claim 7 is characterized in that, when this second interrupt signal was low level, analog switch was opened; When this second interrupt signal was high level, analog switch cut out.
10. recognition methods as claimed in claim 7 is characterized in that, when this second interrupt signal was low level, this 3.5mm earphone inserted the 3.5mm earphone socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048792.9A CN101854423B (en) | 2009-04-03 | 2009-04-03 | Shared interface deice of CMMB (China Mobile Multimedia Broadcasting) antenna and earphone and identifying method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048792.9A CN101854423B (en) | 2009-04-03 | 2009-04-03 | Shared interface deice of CMMB (China Mobile Multimedia Broadcasting) antenna and earphone and identifying method thereof |
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| CN101854423A true CN101854423A (en) | 2010-10-06 |
| CN101854423B CN101854423B (en) | 2014-08-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095314A (en) * | 2011-10-27 | 2013-05-08 | 深圳光启高等理工研究院 | China mobile multimedia broadcasting (CMMB) receiving terminal |
| CN104461952A (en) * | 2014-11-28 | 2015-03-25 | 广东欧珀移动通信有限公司 | Interface sharing method and terminal |
-
2009
- 2009-04-03 CN CN200910048792.9A patent/CN101854423B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095314A (en) * | 2011-10-27 | 2013-05-08 | 深圳光启高等理工研究院 | China mobile multimedia broadcasting (CMMB) receiving terminal |
| CN103095314B (en) * | 2011-10-27 | 2016-06-29 | 深圳光启高等理工研究院 | CMMB receives terminal |
| CN104461952A (en) * | 2014-11-28 | 2015-03-25 | 广东欧珀移动通信有限公司 | Interface sharing method and terminal |
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| Publication number | Publication date |
|---|---|
| CN101854423B (en) | 2014-08-13 |
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