CN201781609U - Mobile phone loudspeaker circuit and mobile phone terminal - Google Patents
Mobile phone loudspeaker circuit and mobile phone terminal Download PDFInfo
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- CN201781609U CN201781609U CN2010201859541U CN201020185954U CN201781609U CN 201781609 U CN201781609 U CN 201781609U CN 2010201859541 U CN2010201859541 U CN 2010201859541U CN 201020185954 U CN201020185954 U CN 201020185954U CN 201781609 U CN201781609 U CN 201781609U
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Abstract
The utility model discloses a mobile phone loudspeaker circuit and a mobile phone terminal. The mobile phone loudspeaker circuit comprises a three-in-one loudspeaker, a baseband signal output module for outputting square wave signals, sound signals and voice signals, a signal processing circuit for transforming the square wave signals or the sound signals into vibration signals or music signals, wherein the signal processing circuit is serially connected between the three-in-one loudspeaker and the baseband signal output module. In the mobile phone loudspeaker circuit and the mobile phone terminal of the utility model, the three-in-one loudspeaker and the signal processing circuit are used, the loudspeaker is provided with the functions of a motor, an earphone and a loudspeaker, the signal processing circuit has a function of power amplifier and is capable of driving the three-in-one loudspeaker to work, and one power amplifier, one motor and one earphone are saved for the mobile phone, so that the valuable space of a circuit board is saved, the mobile phone is minimized and the cost of the product is lowered.
Description
Technical field
The utility model relates to the mobile phone technique field, is specifically related to a kind of mobile phone speaker circuit and mobile phone terminal.
Background technology
Mobile phone generally can be in multiple mode of operation, and for example, vibration mode, bell mode, call mode or vibration add bell mode.When mobile phone is in vibration mode, need make the mobile phone vibration by the power amplifier CD-ROM drive motor; When mobile phone is in bell mode, need drive loudspeaker plays sound by power amplifier; When mobile phone is in vibration when adding bell mode, need work simultaneously by motor and loud speaker that power amplifier drives mobile phone; When mobile phone is in call mode, need to drive receiver work by power amplifier, realize the call function of mobile phone, and need this moment the power amplifier of CD-ROM drive motor and speaker operation is closed.
In order to save the space of saving pcb board, at present, mobile phone generally adopts two power amplifiers, power amplifier CD-ROM drive motor and speaker operation, and another drives receiver work.Yet, if make mobile device possess four kinds of above-mentioned basic working modes, two power amplifiers, a motor, a loud speaker and a receiver need be set at least on the mainboard of mobile phone, these five electronic components need to occupy certain space on circuit board.Along with the miniaturization of handset size, reduce electronic component, save the space of circuit board, become a kind of development trend of electron trade.
Thereby prior art is still waiting to improve and improve.
The utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of mobile phone speaker circuit, can reduce the electronic component on the cell phone mainboard, saves the space of circuit board.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of mobile phone speaker circuit, it comprises:
Three-in-one loud speaker; Be used to export the baseband signal output module of square-wave signal, audio signal and voice signal; Be used for described square-wave signal or audio signal are converted to the signal processing circuit of vibration signal or music signal; Described signal processing circuit is connected between baseband signal output module and the described three-in-one loud speaker.
Described mobile phone speaker circuit, wherein, described signal processing circuit comprises: the square wave commentaries on classics sine wave module that is used for described square-wave signal is converted to sine wave signal; Be used for converting described sine wave signal or audio signal to vibration signal or music signal, perhaps simultaneously sine wave signal and audio signal converted to the signal processing module of vibration signal and music signal; Described square wave changes between first signal input part of first signal output part that sine wave module is connected on described baseband signal output module and described signal processing module; First signal input part of described signal processing module is connected with the secondary signal output of described baseband signal output module, and the secondary signal input of described signal processing module is connected with the 3rd signal output part of described baseband signal output module; The signal output part of described signal processing module is attempted by the two ends of described three-in-one loud speaker.
Described mobile phone speaker circuit, wherein, described signal processing circuit also comprises the filter circuit between first signal input part of the secondary signal output that is connected on described baseband signal output module and described signal processing module, is used for the audio signal of described baseband signal output module output is carried out Filtering Processing.
Described mobile phone speaker circuit, wherein, described square wave changes sine wave module and comprises first resistance, first electric capacity and second electric capacity; Described first resistance and described first capacitances in series, an end of described second electric capacity is connected with the input of described first electric capacity, the other end ground connection of described second electric capacity.
Described mobile phone speaker circuit, wherein, described filter circuit comprises second resistance and the 3rd electric capacity, described second resistance and the 3rd electric capacity parallel connection.
Described mobile phone speaker circuit, wherein, it is the integrated chip of SN4900 that described signal processing module adopts model.
Described mobile phone speaker circuit, wherein, described baseband signal output module adopts the baseband chip of MTK series.
Described mobile phone speaker circuit, wherein, the model of baseband chip is MTK6223.
Another purpose of the present utility model also is to provide a kind of mobile phone terminal, and it comprises the mobile phone speaker circuit, and described mobile phone speaker circuit comprises: three-in-one loud speaker; Be used to export the baseband signal output module of square-wave signal, audio signal and voice signal; Be used for described square-wave signal or audio signal are converted to the signal processing circuit of vibration signal or music signal; Described signal processing circuit is connected between baseband signal output module and the described three-in-one loud speaker.
Described mobile phone terminal, wherein, described signal processing circuit comprises: the square wave commentaries on classics sine wave module that is used for described square-wave signal is converted to sine wave signal; Be used for converting described sine wave signal or audio signal to vibration signal or music signal, perhaps simultaneously sine wave signal and audio signal converted to the signal processing module of vibration signal and music signal; Described square wave changes between first signal input part of first signal output part that sine wave module is connected on described baseband signal output module and described signal processing module; First signal input part of described signal processing module is connected with the secondary signal output of described baseband signal output module, and the secondary signal input of described signal processing module is connected with the 3rd signal output part of described baseband signal output module; The signal output part of described signal processing module is attempted by the two ends of described three-in-one loud speaker.
The mobile phone speaker circuit that the utility model provides, owing to adopted three-in-one loud speaker and signal processing circuit, described loud speaker possesses the function of motor, receiver and loud speaker, signal processing circuit possesses the power amplifier function, can drive three-in-one speaker operation, for mobile phone has reduced a power amplifier, a motor and a receiver, thus the expensive real estate of having saved circuit board, realize the mobile phone miniaturization, also reduced the cost of product simultaneously.
Description of drawings
Fig. 1 is the schematic diagram of the utility model mobile phone speaker circuit;
Fig. 2 is the circuit diagram of the utility model signal processing circuit.
Embodiment
The signal processing circuit that the utility model provides is applied to the mobile phone technique field, possess the three-in-one loud speaker of motor, receiver and loudspeaker function and can drive the signal processing circuit of three-in-one speaker operation by employing, for mobile phone terminal has reduced a power amplifier, a motor and a receiver, thereby saved the expensive real estate of circuit board, realize the mobile phone miniaturization, also saved the material cost of mobile phone simultaneously.
For making the purpose of this utility model, technical scheme and effect clearer, clear and definite, below with reference to accompanying drawing and give an actual example the utility model is further described.
See also Fig. 1 and Fig. 2, mobile phone speaker of the present utility model is three-in-one loud speaker 100, and it possesses the function of existing motor, loud speaker and receiver.Mobile phone speaker circuit of the present utility model comprises three-in-one loud speaker 100, signal processing circuit 200 and baseband signal output module 300.Described signal processing circuit 200 is connected between three-in-one loud speaker 100 and the baseband signal output module 300, and the square-wave signal or the audio signal that are used for respectively baseband signal output module 300 being exported convert vibration signal or the music signal that the described three-in-one loud speaker 100 of driving carries out relevant work to.
Described signal processing circuit 200 comprises that square wave changes sine wave module 210 and signal processing module 220.Described square wave changes between the first signal input part VIN-of first signal output part that sine wave module 210 is connected on described baseband signal output module 300 and described signal processing module 220, be used for converting the square-wave signal of described baseband signal output module 300 outputs to sine wave signal, and send to described signal processing module 200, convert the vibration signal that drives described three-in-one loudspeaker vibration to through signal processing module 200.
The signal output part VOUT1 of described signal processing module 220 and VOUT2 are attempted by the two ends of described three-in-one loud speaker 100, the first signal input part VIN-of described signal processing module 220 is connected with the secondary signal output of described baseband signal output module 300, is used for the music signal with the described three-in-one loudspeaker plays sound of audio signal conversion driving of described baseband signal output module 300 outputs.
Described signal processing module 220 also changes described square wave the sine wave signal of sine wave module 210 outputs simultaneously and the audio signal of baseband signal output module 300 outputs converts vibration signal that drives described three-in-one loudspeaker vibration and the music signal that plays sound to.
The secondary signal input STBY# of described signal processing module 220 is connected with the 3rd signal output part of described baseband signal output module 300, the voice signal that is used for described baseband signal output module 300 outputs of directly output sends to described three-in-one loud speaker, thereby realizes the call function of mobile phone.
When mobile phone is in vibration mode, the GPIO port of described baseband signal output module 300 (Gereral Programable Input Output, the general programmable input/output port) square wave of output 2.8V, change sine wave module 210 through square wave and convert sine wave to, converting this sine wave to three-in-one loud speaker 100 work required frequency by described signal processing module 220 again is 157HZ ± 5HZ, amplitude is the sine wave signal of 0.35V, thereby drive three-in-one loud speaker 100 vibrations, realize the motor function of three-in-one loud speaker 100.
When mobile phone was in bell mode, described baseband signal output module 300 sent to signal processing module 220 with output audio signal, and after handling through signal processing module 220, output drives the music signal that described three-in-one loud speaker 100 plays sound again.
When mobile phone is in vibration when adding bell mode, baseband signal output module 300 is exported GPIO square-wave signal and audio signal simultaneously, convert square-wave signal and audio signal to the vibration signal that drives described three-in-one loud speaker 100 vibrations and the music signal that plays sound respectively by described signal processing circuit 200, realize the motor and the loudspeaker function of described three-in-one loud speaker 100 simultaneously.
When mobile phone is in call mode, the motor of three-in-one loud speaker 100 and loudspeaker function can not be worked simultaneously with handset function, therefore, this moment, signal processing module 220 was in closed condition, directly the voice signal with described baseband signal output module 300 outputs sends to three-in-one loud speaker 100, realizes the call function of mobile phone.
In the present embodiment, described signal processing module 220 serves as single-ended input power amplifier of the prior art, and its model that adopts the SI-EN manufacturer production is the integrated chip of SN4900.When mobile phone was in call mode, chip SN4900 closed, and this moment, chip SN4900 was equivalent to a lead, and the voice output port that promptly is equivalent to described baseband signal output module 300 directly is connected with three-in-one loud speaker 100, as shown in Figure 2.
Described baseband signal output module 300 adopts the baseband chip of MTK series, the model of the baseband chip that the utility model adopts is MTK6223, because the circuit connecting mode of baseband chip is a prior art, so do not illustrate other pin and the peripheral circuit of baseband chip in the accompanying drawing of the present utility model fully.
Please continue to consult Fig. 1 and Fig. 2, described square wave changes sine wave module 210 and comprises first resistance R 211, first capacitor C 225 and second capacitor C 224, described first resistance R 211 is connected with first capacitor C 225, one end of second capacitor C 224 connects with the input of first capacitor C 225, the other end ground connection of second capacitor C 224.Certain square wave of the present utility model changes sine wave module 210 can also comprise other resistance or other electron component, as long as this circuit can be realized converting square wave to sinusoidal wave function, all belongs to protection range of the present utility model.
Further, signal processing circuit 200 of the present utility model also comprises the secondary signal output that is connected on described baseband signal output module 300 and the filter circuit 221 between the described signal processing module 220 first input end VIN-.This filter circuit 221 is a low-pass filter circuit, is used for the audio signal of baseband signal output module 300 outputs is carried out Filtering Processing.
When mobile phone is in bell mode, baseband signal output module 300 is by MP3 output port output audio signal, by the signal below this filter circuit 221 filtering 500HZ, have low-frequency signals to drive three-in-one loud speaker 100 vibrations when avoiding jingle bell, and the above signal of 500HZ after handling amplification, signal processing module 220 flow to three-in-one loud speaker 100.In the present embodiment, described filter circuit 221 comprises second resistance R 223 and the 3rd capacitor C 221, described second resistance R 223 and 221 parallel connections of the 3rd capacitor C.
The utility model embodiment also provides a kind of mobile phone terminal, and described mobile phone terminal comprises the mobile phone speaker circuit that the utility model embodiment provides, in view of this mobile phone speaker circuit in above existing detailed description, repeat no more herein.
This practicality is owing to adopted three-in-one loud speaker, and be connected on signal processing circuit between baseband signal output module and the described three-in-one loud speaker, described loud speaker possesses the function of motor, receiver and loud speaker, signal processing circuit possesses the power amplifier function, for mobile phone has reduced a power amplifier, a motor and a receiver, thereby saved the expensive real estate of circuit board, realized the mobile phone miniaturization, also reduced the cost of product simultaneously.
More than the utility model is described in detail, for those of ordinary skills, can be improved according to the above description or conversion, and all these improve and conversion all should belong to the protection range of the utility model claims.
Claims (10)
1. a mobile phone speaker circuit is characterized in that, comprising:
Three-in-one loud speaker;
Be used to export the baseband signal output module of square-wave signal, audio signal and voice signal;
Be used for described square-wave signal or audio signal are converted to the signal processing circuit of vibration signal or music signal;
Described signal processing circuit is connected between baseband signal output module and the described three-in-one loud speaker.
2. mobile phone speaker circuit according to claim 1 is characterized in that, described signal processing circuit comprises:
Be used for described square-wave signal is converted to the square wave commentaries on classics sine wave module of sine wave signal;
Be used for converting described sine wave signal or audio signal to vibration signal or music signal, perhaps simultaneously sine wave signal and audio signal converted to the signal processing module of vibration signal and music signal;
Described square wave changes between first signal input part of first signal output part that sine wave module is connected on described baseband signal output module and described signal processing module;
First signal input part of described signal processing module is connected with the secondary signal output of described baseband signal output module, and the secondary signal input of described signal processing module is connected with the 3rd signal output part of described baseband signal output module; The signal output part of described signal processing module is attempted by the two ends of described three-in-one loud speaker.
3. mobile phone speaker circuit according to claim 2, it is characterized in that, described signal processing circuit also comprises the filter circuit between first signal input part of the secondary signal output that is connected on described baseband signal output module and described signal processing module, is used for the audio signal of described baseband signal output module output is carried out Filtering Processing.
4. mobile phone speaker circuit according to claim 2 is characterized in that, described square wave changes sine wave module and comprises first resistance, first electric capacity and second electric capacity; Described first resistance and described first capacitances in series, an end of described second electric capacity is connected with the input of described first electric capacity, the other end ground connection of described second electric capacity.
5. mobile phone speaker circuit according to claim 3 is characterized in that, described filter circuit comprises second resistance and the 3rd electric capacity, described second resistance and the 3rd electric capacity parallel connection.
6. mobile phone speaker circuit according to claim 2 is characterized in that, it is the integrated chip of SN4900 that described signal processing module adopts model.
7. mobile phone speaker circuit according to claim 1 is characterized in that, described baseband signal output module adopts the baseband chip of MTK series.
8. mobile phone speaker circuit according to claim 7 is characterized in that, the model of baseband chip is MTK6223.
9. a mobile phone terminal is characterized in that, comprises the mobile phone speaker circuit, and described mobile phone speaker circuit comprises:
Three-in-one loud speaker;
Be used to export the baseband signal output module of square-wave signal, audio signal and voice signal;
Be used for described square-wave signal or audio signal are converted to the signal processing circuit of vibration signal or music signal;
Described signal processing circuit is connected between baseband signal output module and the described three-in-one loud speaker.
10. mobile phone terminal according to claim 9 is characterized in that, described signal processing circuit comprises:
Be used for described square-wave signal is converted to the square wave commentaries on classics sine wave module of sine wave signal;
Be used for converting described sine wave signal or audio signal to vibration signal or music signal, perhaps simultaneously sine wave signal and audio signal converted to the signal processing module of vibration signal and music signal;
Described square wave changes between first signal input part of first signal output part that sine wave module is connected on described baseband signal output module and described signal processing module;
First signal input part of described signal processing module is connected with the secondary signal output of described baseband signal output module, and the secondary signal input of described signal processing module is connected with the 3rd signal output part of described baseband signal output module; The signal output part of described signal processing module is attempted by the two ends of described three-in-one loud speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201859541U CN201781609U (en) | 2010-04-21 | 2010-04-21 | Mobile phone loudspeaker circuit and mobile phone terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201859541U CN201781609U (en) | 2010-04-21 | 2010-04-21 | Mobile phone loudspeaker circuit and mobile phone terminal |
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| Publication Number | Publication Date |
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| CN201781609U true CN201781609U (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201859541U Expired - Fee Related CN201781609U (en) | 2010-04-21 | 2010-04-21 | Mobile phone loudspeaker circuit and mobile phone terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694890A (en) * | 2012-05-24 | 2012-09-26 | 四川华立德科技有限公司 | Component with loudspeaker and receiver sound source and mobile phone applying component |
| CN105357612A (en) * | 2015-11-30 | 2016-02-24 | 青岛海信移动通信技术股份有限公司 | Pickup device, method and terminal device |
| CN105704340A (en) * | 2016-01-19 | 2016-06-22 | 瑞声光电科技(常州)有限公司 | Multifunctional vibration system, vibration method, and communication terminal using the multifunctional vibration system |
| CN107105364A (en) * | 2016-02-23 | 2017-08-29 | 朱隆娅 | mobile phone speaker circuit |
-
2010
- 2010-04-21 CN CN2010201859541U patent/CN201781609U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694890A (en) * | 2012-05-24 | 2012-09-26 | 四川华立德科技有限公司 | Component with loudspeaker and receiver sound source and mobile phone applying component |
| CN102694890B (en) * | 2012-05-24 | 2015-06-10 | 四川华立德科技有限公司 | Component with loudspeaker and receiver sound source and mobile phone applying component |
| CN105357612A (en) * | 2015-11-30 | 2016-02-24 | 青岛海信移动通信技术股份有限公司 | Pickup device, method and terminal device |
| CN105357612B (en) * | 2015-11-30 | 2019-09-06 | 青岛海信移动通信技术股份有限公司 | A sound pickup device, method and terminal equipment |
| CN105704340A (en) * | 2016-01-19 | 2016-06-22 | 瑞声光电科技(常州)有限公司 | Multifunctional vibration system, vibration method, and communication terminal using the multifunctional vibration system |
| CN107105364A (en) * | 2016-02-23 | 2017-08-29 | 朱隆娅 | mobile phone speaker circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20130421 |