CN201426137Y - Mobile phone with wireless voice transmission and sharing functions - Google Patents
Mobile phone with wireless voice transmission and sharing functions Download PDFInfo
- Publication number
- CN201426137Y CN201426137Y CN2009201320162U CN200920132016U CN201426137Y CN 201426137 Y CN201426137 Y CN 201426137Y CN 2009201320162 U CN2009201320162 U CN 2009201320162U CN 200920132016 U CN200920132016 U CN 200920132016U CN 201426137 Y CN201426137 Y CN 201426137Y
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- wireless transmission
- main control
- control chip
- mobile phone
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Abstract
A mobile phone with wireless voice transmission and sharing functions comprises a main control chip (1), and the main control chip (1) is provided with left-channel and right-channel audio output pins(11 and 12). The mobile phone with the wireless voice transmission and sharing functions is characterized in that the mobile phone further comprises a wireless transmission integrated circuit (2), and the circuit is provided with left-channel and right-channel audio input pins (21 and 22); the left-channel and the right-channel audio output pins (11 and 12) of the main control chip (1) are electrically connected to the two audio input pins (21 and 22) of the wireless transmission integrated circuit (2) respectively; by means of the circuit, the main control chip (1) can transmit an analog voice signal obtained by converting a digital voice signal in a memory card to the wireless transmission integrated circuit (2), the circuit loads the analog voice signal on a broadcasting frequency bandwith the modulation frequency ranging from 88 MHz to 108MHz to transmit and share the analog voice signal by groups. Compared with the prior art, the mobile phone has the benefits of convenient operation, group sharing and longer transmission distance.
Description
Technical field
The utility model relates to the extension sets of branch office, particularly relates to the mobile phone with voice wireless transmission sharing functionality.
Background technology
At present, in the mobile phone Radio Transmission Technology, Bluetooth technology is the scheme of comparative maturity.Because the agreement of Bluetooth technology is complicated, threshold is higher, and transmission frequency higher be 2.4GHz, cause transmission range shorter, generally only can noiseless transmission under the perfect condition 20 meters.When providing the shared side of bluetooth service Fang Yaoxiang that service is provided, shared side must finish the process of " activation-pairing-online " with the bluetooth of service side, just can carry out point-to-point service after only finishing this process, and when sharing the side when being a big colony, it is very little that shared possibility just becomes.
The most of mobile phone of prior art has all used Bluetooth technology, its weak point is, always need many operations to determine shared object based on carrying out between the mobile phone of Bluetooth technology before the communication, and can only select single shared object, shared object can not be expanded to a colony.Simultaneously, because bluetooth frequencies is higher, transmission range can be too not far away yet.Generally speaking, in the time need sharing the mobile phone phonetic data with specific crowd as public arenas such as bus, meeting rooms, the operating process more complicated, shared scope is also less.
The utility model content
The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part, and prior art is done further improvement, proposes a kind of easy to operate, mobile phone with voice wireless transmission sharing functionality that transmission range is far away.
The utility model is to solve the technical problem the technical scheme that proposes to be, designs a kind of mobile phone with voice wireless transmission sharing functionality, comprises main control chip, and this main control chip has L channel and R channel two audio frequency output pins; It is characterized in that,
Also comprise the wireless transmission integrated circuit; This wireless transmission integrated circuit has L channel and R channel two audio frequency input pins; The L channel of described main control chip and R channel two audio frequency output pins are electrically connected to the L channel and the R channel two audio frequency input pins of wireless transmission integrated circuit respectively;
By above circuit, the analog voice signal that the audio digital signals of main control chip from the mobile phone storage card can be converted to is transferred to the wireless transmission integrated circuit, and the modulation frequency range that analog voice signal is carried in this circuit inside and provides by the wireless transmission integrated circuit is launched on the broadcast band of 88~108MHz for colony and shared.
The model of described main control chip is the MT6225 of Taiwan MediaTek Inc.
Described wireless transmission integrated circuit uses the chip of model as BH1415F.
Also comprise first, second two dividing potential drops and high-pass filtering circuit; The L channel audio frequency output pin of described first dividing potential drop and high-pass filtering circuit one end and main control chip is electrically connected, and the L channel audio frequency input pin of the other end and wireless transmission integrated circuit is electrically connected; The right audio channel output pin of described second dividing potential drop and high-pass filtering circuit one end and main control chip is electrically connected, and the right audio channel input pin of the other end and wireless transmission integrated circuit is electrically connected.
Also comprise first and second liang of analog switches; Described first and second liang of analog switches include two input pins and an output pin; Two input pins of described first analog switch are electrically connected with the L channel audio frequency output pin and the GPI038-FLASH2 pin of main control chip respectively, and output pin is electrically connected with the input of first dividing potential drop and high-pass filtering circuit; Two input pins of described second analog switch are electrically connected with the right audio channel output pin and the GPI038-FLASH2 pin of main control chip respectively, and output pin is electrically connected with the input of second dividing potential drop and high-pass filtering circuit.
The model of described first and second liang of analog switches is NC7SB3157.
Compared with prior art, the utlity model has following beneficial effect:
1, easy to operate; The utility model has adopted the integrated circuit with wireless transmission effect, can pass through modulate emission to the analog voice signal of two-way transmission, and can be loaded into the reception of broadcast receiver universal frequency, receiving terminal does not need " activation-pairing-online " especially process, only need to use broadcast receiver to get final product received speech signal, easy to operate;
2, transmission range is far away; Because the utility model has converted voice signal to analog signal and has used the emission of wireless transmission integrated circuit, the emission modulating frequency is the broadcast band of 88~108MHz, frequency is relatively low, can reach 100 meters in glitch-free ideally transmission range, compare Bluetooth technology and improved transmission range greatly.
Description of drawings
Fig. 1 is the described operation principle block diagram that the utlity model has voice wireless transmission sharing functionality mobile phone.
Fig. 2 is described utility model preferred embodiment circuit theory diagrams.
Embodiment
Be described in further detail below in conjunction with the preferred embodiment shown in the accompanying drawing.
Shown in Figure 1 is described operation principle block diagram with voice wireless transmission sharing functionality mobile phone of the present utility model, main control chip 1 reads the digital speech data in the mobile phone storage card, and this digital speech data is converted to analog voice signal, main control chip 1 is sent into wireless transmission integrated circuit 2 with analog voice signal through analog switch, dividing potential drop and high-pass filtering circuit and is loaded on the local oscillation signal that modulating frequency is 88~108MHz and launches by antenna, and the sharer can utilize common FM receiver received speech signal.And except the voice data of mobile phone storage itself, the external voice data equally also can be imported mobile phone and be transferred to wireless transmission integrated circuit 2 by dividing potential drop and high-pass filtering circuit and launch to share for other users by antenna and receive.
Fig. 2 is the preferred embodiment circuit theory diagrams, the model of main control chip 1 is the MT6225 of Taiwan MediaTek Inc, it has L channel and R channel two audio frequency output pins 11,12, main control chip 1 reads the digital speech data of storing in the mobile phone, digital speech data is converted to the two-way simulated audio signal, the two-way simulated audio signal outputs to the 4th pin of first and second liang of path analoging switch 41,42 respectively respectively through L channel and R channel two audio frequency output pins 11,12, analog switch 41,42 models are NC7SB3157; Through two path analoging switch 41; output to first after 42; second liang of dividing potential drop and high-pass filtering circuit 31; 32; through dividing potential drop and high-pass filtering circuit audio signal is carried out dividing potential drop and the low frequency signal below the filtering 50Hz again; can effectively protect chip to remove side by side like this disturbs; optimize audio signal; be input to the L channel and the R channel two audio frequency input pins 21 of wireless transmission integrated circuit 2 respectively through the two-way simulated audio signal of dividing potential drop and high-pass filtering; 22, wireless transmission integrated circuit 2 is loaded into the two-way simulated audio signal of importing on the local oscillation signal that modulating frequency is 88~108MHz and by antenna to be launched.
External audio signal is launched the expanded function that shared function is a present embodiment by the mobile phone that present embodiment has voice wireless transmission sharing functionality.Implementation procedure is as follows, external audio signal is sent into mobile phone by the audio interface of mobile phone, this need be by special cable input, this cable one end is the USB public plug, the other end is common dual-channel headphone public plug, the audio interface of external audio data by mobile phone can be imported in the mobile phone by this cable, by two path analoging switch 41,42 control out/left side of offset mobile phone audio interface, R channel is connected with main control chip 1MT6225's, be implemented in the normal use that does not influence mobile phone under the shared situation of external voice data, controlling this connection can be by GPI038-FLASH2 pin and two path analoging switch 41 of main control chip 1MT6225, the circuit that 42 the 6th pin connects is controlled, when GPI038-FLASH2 output high level, the left side of main control chip 1MT6225 and mobile phone audio interface, the L channel of R channel and wireless transmission integrated circuit 2 chip BH1415F and R channel two audio frequency input pins 21,22 can normal communication, and can launch shared by wireless transmission integrated circuit 2 the voice data of mobile phone inside this moment.When the GPI038-FLASH2 output low level, normal communication between the audio interface of mobile phone and the wireless transmission integrated circuit 2 chip BH1415F, be L channel and 21,22 conductings respectively of R channel two audio frequency input pins of mobile phone audio interface left and right sound channels and BH1415F, and with the communication disruption of main control chip 1MT6225, at this moment, external voice data (as voice data such as computer, TVs) can be launched shared by chip BH1415F, and mobile phone also can normal talking.
Claims (6)
1. the mobile phone with voice wireless transmission sharing functionality comprises main control chip (1), and this main control chip (1) has L channel and R channel two audio frequency output pins (11,12); It is characterized in that:
Also comprise wireless transmission integrated circuit (2); This wireless transmission integrated circuit (2) has L channel and R channel two audio frequency input pins (21,22); The L channel of described main control chip (1) and R channel two audio frequency output pins (11,12) are electrically connected to the L channel and the R channel two audio frequency input pins (21,22) of wireless transmission integrated circuit (2) respectively;
By above circuit, the analog voice signal that main control chip (1) can be converted to the audio digital signals from storage card is transferred to wireless transmission integrated circuit (2), and the modulation frequency range that analog voice signal is carried in this circuit inside and provides by wireless transmission integrated circuit (2) is launched on the broadcast band of 88~108MHz for colony and shared.
2. the mobile phone with voice wireless transmission sharing functionality according to claim 1 is characterized in that: the model of described main control chip (1) is the MT6225 of Taiwan MediaTek Inc.
3. the mobile phone with voice wireless transmission sharing functionality according to claim 1 is characterized in that: described wireless transmission integrated circuit (2) uses the chip of model as BH1415F.
4. according to claim 1,2 or 3 described mobile phones, it is characterized in that: also comprise first, second two dividing potential drop and high-pass filtering circuit (31,32) with voice wireless transmission sharing functionality; The L channel audio frequency output pin (11) of described first dividing potential drop and high-pass filtering circuit (31) one ends and main control chip (1) is electrically connected, and the L channel audio frequency input pin (21) of the other end and wireless transmission integrated circuit (2) is electrically connected; The right audio channel output pin (11) of described second dividing potential drop and high-pass filtering circuit (32) one ends and main control chip (1) is electrically connected, and the right audio channel input pin (22) of the other end and wireless transmission integrated circuit (2) is electrically connected.
5. according to claim 1,2 or 3 described mobile phones, it is characterized in that: also comprise first and second liang of analog switches (41,42) with voice wireless transmission sharing functionality; Described first and second liang of analog switches (41,42) include two input pins and an output pin; Two input pins of described first analog switch (41) are electrically connected with the L channel audio frequency output pin (11) and the GPI038-FLASH2 pin of main control chip (1) respectively, and output pin is electrically connected with the input of first dividing potential drop and high-pass filtering circuit (31); Two input pins of described second analog switch (42) are electrically connected with the right audio channel output pin (12) and the GPI038-FLASH2 pin of main control chip (1) respectively, and output pin is electrically connected with the input of second dividing potential drop and high-pass filtering circuit (32).
6. the mobile phone with voice wireless transmission sharing functionality according to claim 5 is characterized in that: the model of described first and second liang of analog switches (41,42) is NC7SB3157.
Priority Applications (1)
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CN2009201320162U CN201426137Y (en) | 2009-05-21 | 2009-05-21 | Mobile phone with wireless voice transmission and sharing functions |
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CN2009201320162U CN201426137Y (en) | 2009-05-21 | 2009-05-21 | Mobile phone with wireless voice transmission and sharing functions |
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CN201426137Y true CN201426137Y (en) | 2010-03-17 |
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CN2009201320162U Expired - Fee Related CN201426137Y (en) | 2009-05-21 | 2009-05-21 | Mobile phone with wireless voice transmission and sharing functions |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105375947A (en) * | 2015-11-30 | 2016-03-02 | 深圳市赛音微电子有限公司 | Wireless receiving and transmitting system of stereo audio signal and control method thereof |
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2009
- 2009-05-21 CN CN2009201320162U patent/CN201426137Y/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105375947A (en) * | 2015-11-30 | 2016-03-02 | 深圳市赛音微电子有限公司 | Wireless receiving and transmitting system of stereo audio signal and control method thereof |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100317 Termination date: 20100521 |