CN101980513A - Mobile phone with anti-wiretapping function and anti-wiretapping implementation method for same - Google Patents
Mobile phone with anti-wiretapping function and anti-wiretapping implementation method for same Download PDFInfo
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- CN101980513A CN101980513A CN2010102463847A CN201010246384A CN101980513A CN 101980513 A CN101980513 A CN 101980513A CN 2010102463847 A CN2010102463847 A CN 2010102463847A CN 201010246384 A CN201010246384 A CN 201010246384A CN 101980513 A CN101980513 A CN 101980513A
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Abstract
The invention discloses a mobile phone with an anti-wiretapping function and an anti-wiretapping implementation method for the same. The mobile phone comprises elements such as an audio input device, a first multi-path selector switch, a first ADC (analog-to-digital converter) module, a first DSP (digital signal processor) module, a first DAC (digital-to-analog converter) module, a second multi-path selector switch, a baseband chip, a third multi-path selector switch, a second ADC module and the like, wherein the audio input device is connected with the audio input end of the first DSP module through the first multi-path selector switch and the first ADC module; the audio output end of the first DSP module is connected with the audio input end of the baseband chip through the first DAC module and the second multi-path selector switch; the audio output end of the baseband chip is connected with the audio input end of a second DSP module through the third multi-path selector switch and the second ADC module; and the audio output end of the second DSP module is connected with an audio output device through a second DAC module and a fourth multi-path selector switch. The mobile phone provides security guarantee for voice communication of a user.
Description
Technical field
The invention belongs to wireless communication technology field, particularly relate to a kind of implementation method with mobile phone and mobile phone anti-eavesdrop of anti-eavesdrop function.
Background technology
21st century is the epoch of communication, and mobile phone has become most important talk instrument in this century, and whether mobile phone is maintained secrecy and also become the popular focus of discussing.Because existing GSM (Global System for Mobile Communications, global system for mobile communications) mobile telephone network does not all have encipherment protection, so the gsm mobile telephone system is easy to be monitored by linked network or tackle signal in the air and eavesdrop.
Summary of the invention
Technical problem to be solved by this invention provides a kind of implementation method with mobile phone and mobile phone anti-eavesdrop of anti-eavesdrop function, and it provides safety guarantee for the user's voice communication.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of mobile phone with anti-eavesdrop function, it is characterized in that, it comprises audio input device, first multidiameter option switch, the one ADC module, the one DSP module, the one DAC module, second multidiameter option switch, baseband chip, the 3rd multidiameter option switch, the 2nd ADC module, the 2nd DSP module, the 2nd DAC module, the 4th multidiameter option switch and audio output apparatus, audio input device links to each other with the audio input end of a DSP module through first multidiameter option switch and an ADC module, the audio output of the one DSP module links to each other with the audio input end of baseband chip through a DAC module and second multidiameter option switch, the audio output of baseband chip links to each other with the audio input end of the 2nd DSP module through the 3rd multidiameter option switch and the 2nd ADC module, and the audio output of the 2nd DSP module links to each other with audio output apparatus through the 2nd DAC module and the 4th multidiameter option switch.
Preferably, described first to fourth multidiameter option switch is used to select the audio frequency I/O channel; The one ADC module and the 2nd ADC module are responsible for analog-to-digital conversion, and a DAC module and the 2nd DAC module are responsible for digital-to-analogue conversion; The one DSP module and the 2nd DSP module are responsible for encrypting and decrypting and are handled.
Another technical scheme of the present invention provides a kind of implementation method of mobile phone anti-eavesdrop, and it uses mobile phone as claimed in claim 1 to realize, it is characterized in that, when setting up conversation, is in the normal talking pattern; Afterwards, if the user selects to enable the anti-eavesdrop function, then open a up DSP module up normal voice data are carried out giving baseband chip again after the encryption, radio frequency sends and is the encrypted speech data; The up encryption and the descending encryption synchronisation frame of having received the other side if this time converse, the 2nd then descending DSP module receives that to the baseband chip end speech data after the encryption is decrypted processing.
Positive progressive effect of the present invention is: the present invention provides safe communication for the user, effectively prevents eavesdropping, allows both call sides carry out safe conversation voice on mobile phone.Just send the method for GSM network after the present invention has adopted encrypt voice data to handle, can prevent effectively that speech data from being eavesdropped, for user's communication provides safety guarantee.Simultaneously, because the anti-eavesdrop function is optional, when normal talking, do not influence the communication of not having this functional mobile phone with other.
Description of drawings
Fig. 1 is the connection diagram of mobile phone base band chip of the present invention and DSP and audio frequency input-output equipment;
Fig. 2 is the upstream voice data handling process schematic diagram of normal talking pattern of the present invention;
Fig. 3 is the downlink voice flow chart of data processing schematic diagram of normal talking pattern of the present invention;
Fig. 4 is the upstream voice data handling process schematic diagram of anti-eavesdrop call mode of the present invention;
Fig. 5 is the downlink voice flow chart of data processing schematic diagram of anti-eavesdrop call mode of the present invention;
Fig. 6 is the flow chart that the up conversation of anti-eavesdrop of the present invention realizes.
Fig. 7 is the flow chart that the descending conversation of anti-eavesdrop of the present invention realizes.
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, the mobile phone that the present invention has the anti-eavesdrop function comprises audio input device, first multidiameter option switch, the one ADC (Analog-to-Digital Converter, analog/digital converter) module, the one DSP (Digital Signal Processor, digital signal processor) module, the one DAC (Digital-to-Analog Converter, digital/analog converter) module, second multidiameter option switch, baseband chip (BaseBand), the 3rd multidiameter option switch, the 2nd ADC module, the 2nd DSP module, the 2nd DAC module, the 4th multidiameter option switch and audio output apparatus, audio input device links to each other with the audio input end of a DSP module through first multidiameter option switch and an ADC module, and the audio output of a DSP module links to each other with the audio input end of baseband chip through a DAC module and second multidiameter option switch.The audio output of baseband chip links to each other with the audio input end of the 2nd DSP module through the 3rd multidiameter option switch and the 2nd ADC module, the audio output of the 2nd DSP module links to each other with audio output apparatus through the 2nd DAC module and the 4th multidiameter option switch, and audio output apparatus comprises receiver and receiver.During practical application,, open corresponding passage according to the audio input device and the audio output apparatus of current use.Whether select the anti-eavesdrop function according to the user, open or close a DSP module or the 2nd DSP module.First to fourth multidiameter option switch is used to select the audio frequency I/O channel; The one ADC module and the 2nd ADC module are responsible for analog-to-digital conversion, and a DAC module and the 2nd DAC module are responsible for digital-to-analogue conversion; The one DSP module and the 2nd DSP module are responsible for encrypting and decrypting and are handled.
When realizing according to the exemplary construction block diagram of Fig. 1, can adopt the product MA181X chip of Modiotek company, this product is integrated multidiameter option switch, ADC module, DAC module and DSP module be in one, convenient control.No matter adopt which kind of product, the principle of realization all is identical.
As shown in Figures 2 and 3, during normal talking, only need close the first and second DSP modules, what mobile phone radio frequency sent reception all is the normal voice data.
As shown in Figure 4 and Figure 5, up normal voice data are sent a DSP resume module after an ADC module, form the speech data after encrypting, and the encrypted speech data are sent by radio frequency through baseband chip.When descending, baseband chip is received the encrypted speech data, send the 2nd ADC module after, be decrypted processing by the 2nd DSP module, form the speech data (with the normal voice data) after the deciphering, after the 2nd DAC module, deliver to audio output apparatus.
As shown in Figure 6, after conversation was set up, mobile phone was in the normal talking pattern, judged whether to encrypt.Afterwards, if the user selects the anti-eavesdrop conversation, promptly select to encrypt, a then up DSP module is opened, and speech data is carried out encryption, sends the encryption synchronisation frame simultaneously, set encryption indicator position.As shown in Figure 7, concerning the 2nd descending DSP module, as long as up the encryption and the descending encryption synchronisation frame of having received, the 2nd then descending DSP just begins decryption processing.
Just send the method for GSM network after the present invention has adopted encrypt voice data to handle, can prevent effectively that speech data from being eavesdropped, for user's communication provides safety guarantee.Simultaneously, because the anti-eavesdrop function is optional, when normal talking, do not influence the communication of not having this functional mobile phone with other.
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 (3)
1. mobile phone with anti-eavesdrop function, it is characterized in that, it comprises audio input device, first multidiameter option switch, the one ADC module, the one DSP module, the one DAC module, second multidiameter option switch, baseband chip, the 3rd multidiameter option switch, the 2nd ADC module, the 2nd DSP module, the 2nd DAC module, the 4th multidiameter option switch and audio output apparatus, audio input device links to each other with the audio input end of a DSP module through first multidiameter option switch and an ADC module, the audio output of the one DSP module links to each other with the audio input end of baseband chip through a DAC module and second multidiameter option switch, the audio output of baseband chip links to each other with the audio input end of the 2nd DSP module through the 3rd multidiameter option switch and the 2nd ADC module, and the audio output of the 2nd DSP module links to each other with audio output apparatus through the 2nd DAC module and the 4th multidiameter option switch.
2. the mobile phone with anti-eavesdrop function as claimed in claim 1 is characterized in that, described first to fourth multidiameter option switch is used to select the audio frequency I/O channel; The one ADC module and the 2nd ADC module are responsible for analog-to-digital conversion, and a DAC module and the 2nd DAC module are responsible for digital-to-analogue conversion; The one DSP module and the 2nd DSP module are responsible for encrypting and decrypting and are handled.
3. the implementation method of a mobile phone anti-eavesdrop, it uses mobile phone as claimed in claim 1 to realize, it is characterized in that, when setting up conversation, is in the normal talking pattern; Afterwards, if the user selects to enable the anti-eavesdrop function, then open a up DSP module up normal voice data are carried out giving baseband chip again after the encryption, radio frequency sends and is the encrypted speech data; The up encryption and the descending encryption synchronisation frame of having received the other side if this time converse, the 2nd then descending DSP module receives that to the baseband chip end speech data after the encryption is decrypted processing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102463847A CN101980513A (en) | 2010-08-05 | 2010-08-05 | Mobile phone with anti-wiretapping function and anti-wiretapping implementation method for same |
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| CN2010102463847A CN101980513A (en) | 2010-08-05 | 2010-08-05 | Mobile phone with anti-wiretapping function and anti-wiretapping implementation method for same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106888310A (en) * | 2015-12-16 | 2017-06-23 | 展讯通信（上海）有限公司 | Ciphering and deciphering device and method and communication terminal device |
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| US5787180A (en) * | 1997-03-24 | 1998-07-28 | Transcrypt International, Inc. | Method of connecting a scrambler or encryption device to a hand-held portable cellular telephone |
| CN1585539A (en) * | 2004-06-08 | 2005-02-23 | 山东超越数控电子有限公司 | Mobile phone encrypting method |
| CN201188646Y (en) * | 2008-05-12 | 2009-01-28 | 黄尚南 | Telephone secrecy apparatus |
| CN102143262A (en) * | 2010-02-03 | 2011-08-03 | 深圳富泰宏精密工业有限公司 | Electronic device and method for switching audio input channel thereof |
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2010
- 2010-08-05 CN CN2010102463847A patent/CN101980513A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5787180A (en) * | 1997-03-24 | 1998-07-28 | Transcrypt International, Inc. | Method of connecting a scrambler or encryption device to a hand-held portable cellular telephone |
| CN1585539A (en) * | 2004-06-08 | 2005-02-23 | 山东超越数控电子有限公司 | Mobile phone encrypting method |
| CN201188646Y (en) * | 2008-05-12 | 2009-01-28 | 黄尚南 | Telephone secrecy apparatus |
| CN102143262A (en) * | 2010-02-03 | 2011-08-03 | 深圳富泰宏精密工业有限公司 | Electronic device and method for switching audio input channel thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106888310A (en) * | 2015-12-16 | 2017-06-23 | 展讯通信（上海）有限公司 | Ciphering and deciphering device and method and communication terminal device |
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Application publication date: 20110223 |