CN102006345B - Mobile phone device - Google Patents
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- CN102006345B CN102006345B CN2010105537503A CN201010553750A CN102006345B CN 102006345 B CN102006345 B CN 102006345B CN 2010105537503 A CN2010105537503 A CN 2010105537503A CN 201010553750 A CN201010553750 A CN 201010553750A CN 102006345 B CN102006345 B CN 102006345B
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- loudspeaker
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Abstract
The invention relates to the field of mobile communication and discloses a mobile phone device. According to the mobile phone device provided by the invention, a horn is connected with the video output end of a base band chip through a first impedance matching circuit and is also connected with the output end of a receiver of the base band chip through a second impedance matching circuit, so that the video output and the receiver output of the mobile phone share one horn and the production cost can be reduced.
Description
Technical field
The present invention relates to the mobile communication terminal field, in particular a kind of mobile device.
Background technology
Along with the development of mobile communication and improving constantly of people's living standard, the use of mobile phone is more and more universal, and mobile phone has become indispensable means of communication in people's life.
The mobile phone of prior art, its baseband circuit Zhong You tri-road audio frequency outputs, a road is to loudspeaker, and a road, to receiver, also has a road to earphone (some mobile phone does not configure earphone).And loudspeaker and receiver, need take two first devices, be unfavorable for saving cost.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, the above-mentioned defect for prior art, provide a kind of mobile device, and audio frequency output and the shared loudspeaker of receiver output that it makes mobile phone, reduced production cost.
The technical scheme that technical solution problem of the present invention adopts is as follows:
A kind of mobile device, comprise a mobile phone body, and be arranged on the circuit board in described mobile phone body, and be provided with baseband chip on described circuit board, it is characterized in that, it also comprises that one is arranged on the loudspeaker on described mobile phone body, and described loudspeaker are connected with the audio output of described baseband chip by the first impedance matching circuit, and described loudspeaker also are connected with the receiver output of described baseband chip by the second impedance matching circuit.
Described mobile device, wherein, the resistance of described loudspeaker and the first impedance matching circuit is 8 ohm.
Described mobile device, wherein, the resistance of described loudspeaker and the second impedance matching circuit is 32 ohm.
Described mobile device, wherein, described the first impedance matching circuit comprises the first electric capacity and the second electric capacity;
A wherein end of described the first electric capacity is connected with the SPK_N pin of described baseband chip audio frequency output, and its other end is connected with described loudspeaker by the first signal line;
A wherein end of described the second electric capacity is connected with the SPK_P pin of described baseband chip audio frequency output, and its other end is connected with described loudspeaker by the secondary signal line.
Described mobile device, wherein, described the first impedance matching circuit also comprises an audio frequency power amplifier chip, the input of described audio frequency power amplifier chip is connected to respectively the audio output of described baseband chip by described the first electric capacity, the second electric capacity;
The output of described audio frequency power amplifier chip is connected to described loudspeaker by described first signal line, secondary signal line respectively.
Described mobile device, wherein, the electric capacity that described the first electric capacity, the second electric capacity are 0.1uF.
Described mobile device, wherein, described the second impedance matching circuit comprises the 3rd electric capacity, the 4th electric capacity, the first resistance and the second resistance;
A wherein end of described the 3rd electric capacity is connected to the REC_P pin of described baseband chip receiver output; Its other end is connected to described loudspeaker by described the first resistance;
A wherein end of described the 4th electric capacity is connected to the REC_N pin of described baseband chip receiver output, and its other end is connected to described loudspeaker by described the second resistance.
Described mobile device, wherein, the electric capacity that described the 3rd electric capacity, the 4th electric capacity are 22 uF, the resistance of described the first resistance, the second resistance is all 12 ohm.
Described mobile device, wherein, between the first signal line that connects described loudspeaker and secondary signal line and be connected to the 6th electric capacity.
Described mobile device, wherein, described first signal line also connects with reference to ground by the 5th electric capacity, and described secondary signal line also connects with reference to ground by the 7th electric capacity.
Mobile device provided by the present invention, owing to having adopted, described loudspeaker are connected with the audio output of described baseband chip by the first impedance matching circuit, described loudspeaker also are connected with the receiver output of described baseband chip by the second impedance matching circuit, it makes the audio frequency output of mobile phone and receiver output share loudspeaker, has reduced production cost.
The accompanying drawing explanation
Fig. 1 is the mobile device perspective view of the embodiment of the present invention.
Fig. 2 is the mobile device circuit principle structure schematic diagram of the embodiment of the present invention.
Embodiment
A kind of mobile device provided by the present invention, clearer, clear and definite for making purpose of the present invention, technical scheme and advantage, referring to accompanying drawing, developing simultaneously, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
A kind of mobile device that the embodiment of the present invention provides, as shown in Figure 1, comprise a mobile phone body 100, and be arranged on the circuit board 110 in described mobile phone body 100.
As shown in Figure 2, be provided with baseband chip 101 on described circuit board 110, reach the radio circuit 102 be connected with described baseband chip 101.Wherein, as shown in Figure 1, it also comprises that one is arranged on the loudspeaker 120 on described mobile phone body 100 mobile device of the present embodiment, described loudspeaker 120 are connected with the audio output (SPK_N and SPK_P) of described baseband chip 101 by the first impedance matching circuit 104, and described loudspeaker 120 also are connected with the receiver output (REC_P and REC_N) of described baseband chip 101 by the second impedance matching circuit 103.
Wherein, the audio frequency output channel that described SPK_N/SPK_P is loudspeaker, it is 8 ohm that this passage requires the load of peripheral circuit.So the resistance coupling of described loudspeaker 120 and the first impedance matching circuit 104 is about 8 ohm.
And the impedance of receiver is about 32 ohm, as shown in Figure 2, the resistance of described loudspeaker 120 and the second impedance matching circuit 103 is about 32 ohm.
Further, as shown in Figure 2, described the first impedance matching circuit 104 comprises the first capacitor C 1, the second capacitor C 2 and an audio frequency power amplifier chip 105; A wherein end of described the first capacitor C 1 is connected with the SPK_N pin of described baseband chip 101 audio outputs, and its other end is connected with described loudspeaker 120 by described audio frequency power amplifier chip 105.
A wherein end of described the second capacitor C 2 is connected with the SPK_P pin of described baseband chip 101 audio outputs, and its other end is connected to described loudspeaker 120 by described audio frequency power amplifier chip 105.Wherein, the electric capacity that described the first electric capacity, the second electric capacity are 0.1uF.The output of described audio frequency power amplifier chip 105 is connected to described loudspeaker 120 by described first signal line 106, secondary signal line 107 respectively.
Certainly, also can adopt and cancel audio frequency power amplifier chip 105, the SPK_N pin of baseband chip 101 audio input ends, SPK_P pin are respectively gone here and there after a 0.1uf electric capacity and directly received on loudspeaker.That is,, by wherein one being connected with the SPK_N pin of described baseband chip 101 audio outputs of described the first capacitor C 1, its other end is connected with described loudspeaker 120 by first signal line 106.A wherein end of described the second capacitor C 2 is connected with the SPK_P pin of described baseband chip 101 audio outputs, and its other end is connected with described loudspeaker 120 by secondary signal line 107.
Described mobile device, as shown in Figure 2, the REC_N/REC_P of baseband chip is receiver output (passage) end, it is 32 ohm that this passage requires the peripheral circuit load.Second impedance matching circuit 103 its impedances that are comprised of the 3rd capacitor C 3, the 4th capacitor C 4, the first resistance R 1 and the second resistance R 2 are also 32 ohm.Wherein, the electric capacity that described the 3rd electric capacity, the 4th electric capacity are 22 uF, the resistance of described the first resistance, the second resistance is all 12 ohm.
Preferably, a wherein end of described the 3rd capacitor C 3 is connected to the REC_P pin of described baseband chip 101 receiver outputs; Its other end is connected to described loudspeaker 120 by described the first resistance R 1;
A wherein end of described the 4th capacitor C 4 is connected to the REC_N pin of described baseband chip 101 receiver outputs, and its other end is connected to described loudspeaker 120 by described the second resistance R 2.Why can directly the receiver of baseband chip output (passage) end REC_N/REC_P be received on loudspeaker? because the impedance of these loudspeaker is 8 ohm, the present invention adopts and gone here and there the resistance (the first resistance R 1 as shown in Figure 2 and the second resistance R 2) of 2 12 ohm on loop, so the impedance in whole loop is exactly ohm.(because these three impedances are series connection, 12+8+12=32), this has just solved resistance matching problem.
Further, as shown in Figure 2, between the first signal line 106 that connects described loudspeaker 120 and secondary signal line 107 and be connected to the 6th capacitor C 6.And described first signal line 106 also connects with reference to ground by the 5th capacitor C 5, described secondary signal line 107 also connects with reference to ground by the 7th capacitor C 7.
In circuit as shown in Figure 2, the first capacitor C 1 and the second capacitor C 2 act as coupling.Acting as every directly of the 3rd capacitor C 3 and the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6 and the 7th capacitor C 7 act as filtering, effectively the filtering noise, improve the loudspeaker audio quality.
Circuit of the present invention is more flexible in addition, if the volume while wish increasing receiver can suitably reduce the resistance of the first resistance R 1 and the second resistance R 2.This is very applicable in the design of the low costs such as old man's machine, the high loudness of receiver.
In sum, mobile device provided by the present invention, owing to having adopted, described loudspeaker are connected with the audio output of described baseband chip by the first impedance matching circuit, described loudspeaker also are connected with the receiver output of described baseband chip by the second impedance matching circuit, it makes the audio frequency output of mobile phone and receiver output share loudspeaker, has reduced production cost.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, and for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (5)
1. a mobile device, comprise a mobile phone body, and be arranged on the circuit board in described mobile phone body, and be provided with baseband chip on described circuit board, it is characterized in that, it also comprises that one is arranged on the loudspeaker on described mobile phone body, and described loudspeaker are connected with the audio output of described baseband chip by the first impedance matching circuit, and described loudspeaker also are connected with the receiver output of described baseband chip by the second impedance matching circuit;
The resistance of described loudspeaker and the first impedance matching circuit is 8 ohm; The resistance of described loudspeaker and the second impedance matching circuit is 32 ohm
Described the first impedance matching circuit comprises the first electric capacity and the second electric capacity;
A wherein end of described the first electric capacity is connected with the SPK_N pin of described baseband chip audio frequency output, and its other end is connected with described loudspeaker by the first signal line;
A wherein end of described the second electric capacity is connected with the SPK_P pin of described baseband chip audio frequency output, and its other end is connected with described loudspeaker by the secondary signal line;
The first electric capacity and the second electric capacity act as coupling;
Described the second impedance matching circuit comprises the 3rd electric capacity, the 4th electric capacity, the first resistance and the second resistance;
A wherein end of described the 3rd electric capacity is connected to the REC_P pin of described baseband chip receiver output; Its other end is connected to described loudspeaker by described the first resistance;
A wherein end of described the 4th electric capacity is connected to the REC_N pin of described baseband chip receiver output, and its other end is connected to described loudspeaker by described the second resistance;
The electric capacity that described the 3rd electric capacity, the 4th electric capacity are 22 uF, the resistance of described the first resistance, the second resistance is all 12 ohm; Acting as every directly of the 3rd capacitor C 3 and the 4th capacitor C 4.
2. mobile device according to claim 1, it is characterized in that, described the first impedance matching circuit also comprises an audio frequency power amplifier chip, and the input of described audio frequency power amplifier chip is connected to respectively the audio output of described baseband chip by described the first electric capacity, the second electric capacity;
The output of described audio frequency power amplifier chip is connected to described loudspeaker by described first signal line, secondary signal line respectively.
3. mobile device according to claim 1, is characterized in that, the electric capacity that described the first electric capacity, the second electric capacity are 0.1uF.
4. mobile device according to claim 1, is characterized in that, between the first signal line that connects described loudspeaker and secondary signal line and be connected to the 6th electric capacity.
5. mobile device according to claim 4, is characterized in that, described first signal line also connects with reference to ground by the 5th electric capacity, and described secondary signal line also connects with reference to ground by the 7th electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105537503A CN102006345B (en) | 2010-11-22 | 2010-11-22 | Mobile phone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105537503A CN102006345B (en) | 2010-11-22 | 2010-11-22 | Mobile phone device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102006345A CN102006345A (en) | 2011-04-06 |
| CN102006345B true CN102006345B (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105537503A Active CN102006345B (en) | 2010-11-22 | 2010-11-22 | Mobile phone device |
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| CN (1) | CN102006345B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106302875B (en) * | 2016-08-04 | 2019-03-15 | 青岛海信移动通信技术股份有限公司 | Mobile terminal |
| CN106954137A (en) * | 2017-01-04 | 2017-07-14 | 上海傅硅电子科技有限公司 | A kind of double mode drive device for loudspeaker |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003023328A (en) * | 2001-07-06 | 2003-01-24 | Niigata Seimitsu Kk | Audio amplifier |
| CN100391216C (en) * | 2004-01-05 | 2008-05-28 | 英华达（南京）科技有限公司 | Method for common sue of loudspeaker of personal hand-set bell and talk-listen |
| CN201869250U (en) * | 2010-11-22 | 2011-06-15 | 惠州Tcl移动通信有限公司 | Mobile phone device |
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Effective date of registration: 20201229 Address after: 225700 plant area (Economic Development Zone), 2nd floor, No.2 factory building, Xinghua science and technology entrepreneurship center, Taizhou City, Jiangsu Province Patentee after: Jiangsu JieChuang Enterprise Management Co.,Ltd. Address before: 511400 No.106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province (self compiled Building 1) x1301-a4845 (cluster registration) (JM) Patentee before: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Effective date of registration: 20201229 Address after: 511400 No.106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province (self compiled Building 1) x1301-a4845 (cluster registration) (JM) Patentee after: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Address before: 516006 Guangdong province Huizhou Zhongkai hi tech Development Zone No. 23 District Patentee before: HUIZHOU TCL MOBILE COMMUNICATION Co.,Ltd. |
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Effective date of registration: 20220105 Address after: 252000 315-316, North building, Kechuang building, No.16, Huanghe Road, Gaoxin District, Liaocheng City, Shandong Province Patentee after: LIAOCHENG YULIN INDUSTRIAL DESIGN Co.,Ltd. Address before: 225700 plant area (Economic Development Zone), 2nd floor, No.2 factory building, Xinghua science and technology entrepreneurship center, Taizhou City, Jiangsu Province Patentee before: Jiangsu JieChuang Enterprise Management Co.,Ltd. |