CN106657568B

CN106657568B - A kind of method and apparatus for realizing safety call

Info

Publication number: CN106657568B
Application number: CN201610821195.5A
Authority: CN
Inventors: 李光宇
Original assignee: Nubia Technology Co Ltd
Current assignee: Nubia Technology Co Ltd
Priority date: 2016-09-13
Filing date: 2016-09-13
Publication date: 2019-08-30
Anticipated expiration: 2036-09-13
Also published as: CN106657568A

Abstract

The invention discloses a kind of methods for realizing secure communication, are applied to mobile terminal, comprising: after detecting that user is made a phone call using the mode of secure communication, save telephone number, exit Android system service environment, restart (SuSE) Linux OS；After the starting of (SuSE) Linux OS kernel, starting is used for the audio codec of call and opens call access in (SuSE) Linux OS initialization init process, and starts modem and the modem is driven to initiate to call according to previously stored telephone number；After detecting the end of calling that the modem is initiated, Android system service environment is reentered.The present invention enables to realize safety call using the mobile terminal of Android system, avoids eavesdropping risk.

Description

A kind of method and apparatus for realizing safety call

Technical field

The present invention relates to field of terminal technology more particularly to a kind of method and apparatus for realizing safety call.

Background technique

A large amount of mobile terminal uses Android (Android) operating system at this stage, due to the characteristic of its open source, application Program and function are numerous, while facilitating developer, also produce many drawbacks.

For example, illegal user can easily get Root authority (super keepe system permission) very much, or even In the case that user absolutely not perceives, silence obtains the Root authority of user.Such as induction user downloads a game, only As soon as attack code can be executed flashing by way of a Banner item (banner identification strip).So as to make monitoring users Then sound, monitoring users dialog context are uploaded onto the server etc. by network and damage the behavior of user benefit.

Therefore, the scheme that a kind of safety call how is developed on fashionable current Android mobile terminal platform is to need It solves the problems, such as.

Summary of the invention

Technical problem to be solved by the invention is to provide a kind of method and apparatus for realizing safety call, enable to make Safety call is realized with the mobile terminal of Android system, avoids eavesdropping risk.

The embodiment of the invention provides a kind of methods for realizing secure communication, are applied to mobile terminal, comprising:

After detecting that user is made a phone call using the mode of secure communication, telephone number is saved, Android system service is exited Environment restarts (SuSE) Linux OS；

After the starting of (SuSE) Linux OS kernel, starting is for conversing in (SuSE) Linux OS initialization init process Audio codec and open call access, and start modem and drive the modem according to before protect The telephone number deposited initiates calling；

After detecting the end of calling that the modem is initiated, Android system service environment is reentered.

The embodiment of the invention also provides a kind of devices for realizing secure communication, are applied to mobile terminal, comprising:

Secure communication detection module saves phone after detecting that user is made a phone call using the mode of secure communication Number exits Android system service environment, restarts (SuSE) Linux OS；

Secure communication execution module, for being initialized in (SuSE) Linux OS after the starting of (SuSE) Linux OS kernel Starting is used for the audio codec of call and opens call access in init process, and starts modem and drive institute It states modem and initiates to call according to previously stored telephone number；In the calling knot for detecting that the modem is initiated Shu Hou reenters Android system service environment.

A kind of method and apparatus for realizing safety call that the embodiment of the present invention proposes, mobile terminal detect that user uses After the mode of secure communication is made a phone call, telephone number information is saved, desktop running environment is exited, restarting operating systems Kernel opens call access in the inner nuclear layer driving audio codec of operating system after the kernel starting of operating system, The inner nuclear layer of operating system reads the telephone number information and modem is driven to initiate calling；Detecting the modulation After the end of calling that demodulator is initiated, desktop running environment is opened.The present invention enables to the mobile terminal using Android system It realizes safety call, avoids eavesdropping risk.

Detailed description of the invention

The hardware structural diagram of Fig. 1 optional mobile terminal of each embodiment one to realize the present invention；

Fig. 2 is the wireless communication system schematic diagram of mobile terminal as shown in Figure 1；

Fig. 3 is a kind of method flow diagram for realizing safety call of the embodiment of the present invention；

Fig. 4 is a kind of schematic device for realizing safety call of the embodiment of the present invention；

Fig. 5 is the method flow diagram that safety call is realized in example 1 of the present invention.

The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.

Specific embodiment

It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.

The mobile terminal of each embodiment of the present invention is realized in description with reference to the drawings.In subsequent description, use For indicate element such as " module ", " component " or " unit " suffix only for being conducive to explanation of the invention, itself There is no specific meanings.Therefore, " module " can be used mixedly with " component ".

Mobile terminal can be implemented in a variety of manners.For example, terminal described in the present invention may include such as moving Phone, smart phone, laptop, digit broadcasting receiver, PDA (personal digital assistant), PAD (tablet computer), PMP The mobile terminal of (portable media player), navigation device etc. and such as number TV, desktop computer etc. are consolidated Determine terminal.Hereinafter it is assumed that terminal is mobile terminal.However, it will be understood by those skilled in the art that in addition to being used in particular for moving Except the element of purpose, the construction of embodiment according to the present invention can also apply to the terminal of fixed type.

Fig. 1 to realize the present invention the optional mobile terminal of each embodiment one hardware configuration signal.

Mobile terminal 100 may include wireless communication unit 110, A/V (audio/video) input unit 120, user's input Unit 130, sensing unit 140, output unit 150, memory 160, interface unit 170, controller 180 and power supply unit 190 Etc..Fig. 1 shows the mobile terminal with various assemblies, it should be understood that being not required for implementing all groups shown Part.More or fewer components can alternatively be implemented.The element of mobile terminal will be discussed in more detail below.

Wireless communication unit 110 generally includes one or more components, allows mobile terminal 100 and wireless communication system Or the radio communication between network.For example, wireless communication unit may include broadcasting reception module 111, mobile communication module 112, at least one of wireless Internet module 113, short range communication module 114 and location information module 115.

Broadcasting reception module 111 receives broadcast singal and/or broadcast from external broadcast management server via broadcast channel Relevant information.Broadcast channel may include satellite channel and/or terrestrial channel.Broadcast management server, which can be, to be generated and sent The broadcast singal and/or broadcast related information generated before the server or reception of broadcast singal and/or broadcast related information And send it to the server of terminal.Broadcast singal may include TV broadcast singal, radio signals, data broadcasting Signal etc..Moreover, broadcast singal may further include the broadcast singal combined with TV or radio signals.Broadcast phase Closing information can also provide via mobile communications network, and in this case, broadcast related information can be by mobile communication mould Block 112 receives.Broadcast singal can exist in a variety of manners, for example, it can be with the electronics of digital multimedia broadcasting (DMB) Program guide (EPG), digital video broadcast-handheld (DVB-H) electronic service guidebooks (ESG) etc. form and exist.Broadcast Receiving module 111 can receive signal broadcast by using various types of broadcast systems.Particularly, broadcasting reception module 111 It can be wide by using such as multimedia broadcasting-ground (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video It broadcasts-holds (DVB-H), the Radio Data System of forward link media (MediaFLO@), received terrestrial digital broadcasting integrated service (ISDB-T) etc. digit broadcasting system receives digital broadcasting.Broadcasting reception module 111, which may be constructed such that, to be adapted to provide for extensively Broadcast the various broadcast systems and above-mentioned digit broadcasting system of signal.Via the received broadcast singal of broadcasting reception module 111 and/ Or broadcast related information can store in memory 160 (or other types of storage medium).

Mobile communication module 112 sends radio signals to base station (for example, access point, node B etc.), exterior terminal And at least one of server and/or receive from it radio signal.Such radio signal may include that voice is logical Talk about signal, video calling signal or according to text and/or Multimedia Message transmission and/or received various types of data.

The Wi-Fi (Wireless Internet Access) of the support mobile terminal of wireless Internet module 113.The module can be internally or externally It is couple to terminal.Wi-Fi (Wireless Internet Access) technology involved in the module may include WLAN (Wireless LAN) (Wi-Fi), Wibro (WiMAX), Wimax (worldwide interoperability for microwave accesses), HSDPA (high-speed downlink packet access) etc..

Short range communication module 114 is the module for supporting short range communication.Some examples of short-range communication technology include indigo plant Tooth TM, radio frequency identification (RFID), Infrared Data Association (IrDA), ultra wide band (UWB), purple honeybee TM etc..

Location information module 115 is the module for checking or obtaining the location information of mobile terminal.Location information module Typical case be GPS (global positioning system).According to current technology, GPS module 115, which calculates, comes from three or more satellites Range information and correct time information and the Information application triangulation for calculating, thus according to longitude, latitude Highly accurately calculate three-dimensional current location information.Currently, it is defended for the method for calculating position and temporal information using three Star and the error that calculated position and temporal information are corrected by using an other satellite.In addition, GPS module 115 It can be by Continuous plus current location information in real time come calculating speed information.

A/V input unit 120 is for receiving audio or video signal.A/V input unit 120 may include 121 He of camera Microphone 1220, camera 121 is to the static map obtained in video acquisition mode or image capture mode by image capture apparatus The image data of piece or video is handled.Treated, and picture frame may be displayed on display unit 151.At camera 121 Picture frame after reason can store in memory 160 (or other storage mediums) or carry out via wireless communication unit 110 It sends, two or more cameras 1210 can be provided according to the construction of mobile terminal.Microphone 122 can be in telephone relation mould Sound (audio data) is received via microphone in formula, logging mode, speech recognition mode etc. operational mode, and can be incited somebody to action Such acoustic processing is audio data.Audio that treated (voice) data can be converted in the case where telephone calling model For the format output that can be sent to mobile communication base station via mobile communication module 112.Various types can be implemented in microphone 122 Noise eliminate (or inhibit) algorithm with eliminate noise that (or inhibition) generates during sending and receiving audio signal or Person's interference.

The order that user input unit 130 can be inputted according to user generates key input data to control each of mobile terminal Kind operation.User input unit 130 allows user to input various types of information, and may include keyboard, metal dome, touch Plate (for example, the sensitive component of detection due to the variation of resistance, pressure, capacitor etc. caused by being contacted), idler wheel, rocking bar etc. Deng.Particularly, when touch tablet is superimposed upon in the form of layer on display unit 151, touch screen can be formed.

Sensing unit 140 detects the current state of mobile terminal 100, (for example, mobile terminal 100 opens or closes shape State), the position of mobile terminal 100, user is for the presence or absence of contact (that is, touch input) of mobile terminal 100, mobile terminal 100 orientation, the acceleration or deceleration movement of mobile terminal 100 and direction etc., and generate for controlling mobile terminal 100 The order of operation or signal.For example, sensing unit 140 can sense when mobile terminal 100 is embodied as sliding-type mobile phone The sliding-type phone is to open or close.In addition, sensing unit 140 be able to detect power supply unit 190 whether provide electric power or Whether person's interface unit 170 couples with external device (ED).Sensing unit 140 may include that proximity sensor 1410 will combine below Touch screen is described this.

Interface unit 170 be used as at least one external device (ED) connect with mobile terminal 100 can by interface.For example, External device (ED) may include wired or wireless headphone port, external power supply (or battery charger) port, wired or nothing Line data port, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end Mouth, video i/o port, ear port etc..Identification module can be storage and use each of mobile terminal 100 for verifying user It plants information and may include subscriber identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM) Etc..In addition, the device (hereinafter referred to as " identification device ") with identification module can take the form of smart card, therefore, know Other device can be connect via port or other attachment devices with mobile terminal 100.Interface unit 170, which can be used for receiving, to be come from The input (for example, data information, electric power etc.) of external device (ED) and the input received is transferred in mobile terminal 100 One or more elements can be used for transmitting data between mobile terminal and external device (ED).

In addition, when mobile terminal 100 is connect with external base, interface unit 170 may be used as allowing will be electric by it Power, which is provided from pedestal to the path or may be used as of mobile terminal 100, allows the various command signals inputted from pedestal to pass through it It is transferred to the path of mobile terminal.The various command signals or electric power inputted from pedestal, which may be used as mobile terminal for identification, is The no signal being accurately fitted on pedestal.Output unit 150 is configured to provide with vision, audio and/or tactile manner defeated Signal (for example, audio signal, vision signal, alarm signal, vibration signal etc.) out.Output unit 150 may include display Unit 151, audio output module 152, alarm unit 153 etc..

Display unit 151 may be displayed on the information handled in mobile terminal 100.For example, when mobile terminal 100 is in electricity When talking about call mode, display unit 151 can show and converse or other communicate (for example, text messaging, multimedia file Downloading etc.) relevant user interface (UI) or graphic user interface (GUI).When mobile terminal 100 is in video calling mode Or when image capture mode, display unit 151 can show captured image and/or received image, show video or figure Picture and the UI or GUI of correlation function etc..

Meanwhile when display unit 151 and touch tablet in the form of layer it is superposed on one another to form touch screen when, display unit 151 may be used as input unit and output device.Display unit 151 may include liquid crystal display (LCD), thin film transistor (TFT) In LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible display, three-dimensional (3D) display etc. at least It is a kind of.Some in these displays may be constructed such that transparence to allow user to watch from outside, this is properly termed as transparent Display, typical transparent display can be, for example, TOLED (transparent organic light emitting diode) display etc..According to specific Desired embodiment, mobile terminal 100 may include two or more display units (or other display devices), for example, moving Dynamic terminal may include outernal display unit (not shown) and inner display unit (not shown).Touch screen can be used for detecting touch Input pressure and touch input position and touch input area.

Audio output module 152 can mobile terminal be in call signal reception pattern, call mode, logging mode, It is when under the isotypes such as speech recognition mode, broadcast reception mode, wireless communication unit 110 is received or in memory 160 The audio data transducing audio signal of middle storage and to export be sound.Moreover, audio output module 152 can provide and movement The relevant audio output of specific function (for example, call signal receives sound, message sink sound etc.) that terminal 100 executes. Audio output module 152 may include loudspeaker, buzzer etc..

Alarm unit 153 can provide output notifying event to mobile terminal 100.Typical event can be with Including calling reception, message sink, key signals input, touch input etc..Other than audio or video output, alarm unit 153 can provide output in different ways with the generation of notification event.For example, alarm unit 153 can be in the form of vibration Output is provided, when receiving calling, message or some other entrance communications (incomingcommunication), alarm list Member 153 can provide tactile output (that is, vibration) to notify to user.By providing such tactile output, even if When the mobile phone of user is in the pocket of user, user also can recognize that the generation of various events.Alarm unit 153 The output of the generation of notification event can be provided via display unit 151 or audio output module 152.

Memory 160 can store the software program etc. of the processing and control operation that are executed by controller 180, Huo Zheke Temporarily to store oneself data (for example, telephone directory, message, still image, video etc.) through exporting or will export.And And memory 160 can store about the vibrations of various modes and audio signal exported when touching and being applied to touch screen Data.

Memory 160 may include the storage medium of at least one type, and the storage medium includes flash memory, hard disk, more Media card, card-type memory (for example, SD or DX memory etc.), random access storage device (RAM), static random-access storage Device (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read only memory (PROM), magnetic storage, disk, CD etc..Moreover, mobile terminal 100 can execute memory with by network connection The network storage device of 160 store function cooperates.

The overall operation of the usually control mobile terminal of controller 180.For example, controller 180 executes and voice communication, data Communication, video calling etc. relevant control and processing.In addition, controller 180 may include for reproducing (or playback) more matchmakers The multi-media module 1810 of volume data, multi-media module 1810 can construct in controller 180, or can be structured as and control Device 180 processed separates.Controller 180 can be with execution pattern identifying processing, by the handwriting input executed on the touchscreen or figure Piece draws input and is identified as character or image.

Power supply unit 190 receives external power or internal power under the control of controller 180 and provides operation each member Electric power appropriate needed for part and component.

Various embodiments described herein can be to use the calculating of such as computer software, hardware or any combination thereof Machine readable medium is implemented.Hardware is implemented, embodiment described herein can be by using application-specific IC (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), scene can Programming gate array (FPGA), controller, microcontroller, microprocessor, is designed to execute function described herein processor At least one of electronic unit is implemented, and in some cases, such embodiment can be implemented in controller 180. For software implementation, the embodiment of such as process or function can with allow to execute the individual of at least one functions or operations Software module is implemented.Software code can by the software application (or program) write with any programming language appropriate Lai Implement, software code can store in memory 160 and be executed by controller 180.

So far, oneself is through describing mobile terminal according to its function.In the following, for the sake of brevity, will description such as folded form, Slide type mobile terminal in various types of mobile terminals of board-type, oscillating-type, slide type mobile terminal etc., which is used as, to be shown Example.Therefore, the present invention can be applied to any kind of mobile terminal, and be not limited to slide type mobile terminal.

Mobile terminal 100 as shown in Figure 1 may be constructed such that using via frame or grouping send data it is all if any Line and wireless communication system and satellite-based communication system operate.

Referring now to Fig. 2 description communication system that wherein mobile terminal according to the present invention can operate.

Different air interface and/or physical layer can be used in such communication system.For example, used by communication system Air interface includes such as frequency division multiple access (FDMA), time division multiple acess (TDMA), CDMA (CDMA) and universal mobile communications system System (UMTS) (particularly, long term evolution (LTE)), global system for mobile communications (GSM) etc..As non-limiting example, under The description in face is related to cdma communication system, but such introduction is equally applicable to other types of system.

With reference to Fig. 2, cdma wireless communication system may include multiple mobile terminals 100, multiple base stations (BS) 270, base station Controller (BSC) 275 and mobile switching centre (MSC) 280.MSC280 is configured to and Public Switched Telephony Network (PSTN) 290 form interface.MSC280 is also structured to form interface with the BSC275 that can be couple to base station 270 via back haul link. Back haul link can be constructed according to any in several known interfaces, and the interface includes such as E1/T1, ATM, IP, PPP, frame relay, HDSL, ADSL or xDSL.It will be appreciated that system may include multiple BSC2750 as shown in Figure 2.

Each BS270 can service one or more subregions (or region), by multidirectional antenna or the day of direction specific direction Each subregion of line covering is radially far from BS270.Alternatively, each subregion can be by two or more for diversity reception Antenna covering.Each BS270, which may be constructed such that, supports multiple frequency distribution, and the distribution of each frequency has specific frequency spectrum (for example, 1.25MHz, 5MHz etc.).

What subregion and frequency were distributed, which intersects, can be referred to as CDMA Channel.BS270 can also be referred to as base station transceiver System (BTS) or other equivalent terms.In this case, term " base station " can be used for broadly indicating single BSC275 and at least one BS270.Base station can also be referred to as " cellular station ".Alternatively, each subregion of specific BS270 can be claimed For multiple cellular stations.

As shown in Figure 2, broadcast singal is sent to the mobile terminal operated in system by broadcsting transmitter (BT) 295 100.Broadcasting reception module 111 as shown in Figure 1 is arranged at mobile terminal 100 to receive the broadcast sent by BT295 Signal.In fig. 2 it is shown that several global positioning system (GPS) satellites 300.The help of satellite 300 positions multiple mobile terminals At least one of 100.

In Fig. 2, multiple satellites 300 are depicted, it is understood that, it is useful to can use any number of satellite acquisition Location information.GPS module 115 as shown in Figure 1 is generally configured to cooperate with satellite 300 to obtain desired positioning and believe Breath.It substitutes GPS tracking technique or except GPS tracking technique, the other of the position that can track mobile terminal can be used Technology.In addition, at least one 300 property of can choose of GPS satellite or extraly processing satellite dmb transmission.

As a typical operation of wireless communication system, BS270 receives the reverse link from various mobile terminals 100 Signal.Mobile terminal 100 usually participates in call, information receiving and transmitting and other types of communication.Certain base station 270 is received each anti- It is handled in specific BS270 to link signal.The data of acquisition are forwarded to relevant BSC275.BSC provides call The mobile management function of resource allocation and the coordination including the soft switching process between BS270.The number that BSC275 will also be received According to MSC280 is routed to, the additional route service for forming interface with PSTN290 is provided.Similarly, PSTN290 with MSC280 forms interface, and MSC and BSC275 form interface, and BSC275 controls BS270 correspondingly with by forward link signals It is sent to mobile terminal 100.

Based on above-mentioned mobile terminal hardware configuration and communication system, technical solution of the present invention is proposed.

The technical solution of this paper, after user indicates safety call under Android dialing interface, system is directly restarted, Before the initialization operation of Android platform, pass through ALSA (Advanced in Kernel (kernel) layer of (SuSE) Linux OS Linux Sound Architecture, advanced Linux sound framework) instruction realizes to the operation of sound card, passes through AT (Attention) operation to modem (Modem) is realized in instruction, is finally completed entire safety call process.This technology The advantages of scheme, is only to realize the most basic function of sound card encoding and decoding access and modem call, because logical in safety Android platform is also inactive during words, lacks the back-up environments such as file system, so backstage eavesdropping, data upload etc. Malicious process does not have condition operation, therefore improves the safety of call.

As shown in figure 3, the embodiment of the present invention proposes a kind of method for realizing secure communication, it is applied to mobile terminal, comprising:

S310 after detecting that user is made a phone call using the mode of secure communication, saves telephone number, exits Android system Service environment restarts (SuSE) Linux OS；

S320 starts in (SuSE) Linux OS initialization init process and uses after the starting of (SuSE) Linux OS kernel In call audio codec and open call access, and start modem and drive the modem according to Previously stored telephone number initiates calling；

S330 reenters Android system service environment after detecting the end of calling that the modem is initiated；

The method can also include following features:

It is optionally, described to detect that user is made a phone call using the mode of secure communication, comprising:

After the starting of Android system service environment, detect that user has selected the choosing of secure communication on the interface made a phone call ?；

Optionally, starting is used for the audio codec of call and opens in (SuSE) Linux OS initialization init process Access is talked about in unblank, comprising:

ALSA (Advanced Linux Sound is used in (SuSE) Linux OS initialization init process Architecture, advanced Linux sound framework) sendaisle and reception of the instruction unlatching for the audio codec of call The gain of the sendaisle and receiving channel is arranged in channel；

Wherein, the ALSA instruction includes: tinymix instruction；

Optionally, starting is used for the audio codec of call and opens in (SuSE) Linux OS initialization init process Before access is talked about in unblank, the method also includes:

The audio codec of call is registered and is configured in (SuSE) Linux OS initialization init process, comprising: An audio codec example for call is created using ALSA tool, configures the chip-count of the audio codec According to creating the functional component of the audio codec, registered to the audio codec；

Optionally, the starting modem and the modem is driven to be sent out according to previously stored telephone number Play calling, comprising:

(SuSE) Linux OS initialization init process in using comprising the telephone number modem instruction with Modem is communicated, and is indicated that the modem transfers to the telephone number, is initiated calling.

As shown in figure 4, the embodiment of the present invention proposes a kind of device for realizing secure communication, it is applied to mobile terminal, comprising:

Secure communication detection module 401 saves electricity after detecting that user is made a phone call using the mode of secure communication Number is talked about, Android system service environment is exited, restarts (SuSE) Linux OS；

Secure communication execution module 402 is used for after the starting of (SuSE) Linux OS kernel, initial in (SuSE) Linux OS Change starting in init process to be used for the audio codec of call and open call access, and starts modem and drive The modem initiates to call according to previously stored telephone number；In the calling for detecting that the modem is initiated After, reenter Android system service environment.

Optionally, secure communication detection module 401, for detecting that user is made a phone call using the mode of secure communication, Include:

Optionally, secure communication execution module 402 is used for starting in (SuSE) Linux OS initialization init process In call audio codec and open call access, comprising:

It is opened and is used for using advanced Linux sound framework ALSA instruction in (SuSE) Linux OS initialization init process The sendaisle and receiving channel of the audio codec of call, are arranged the gain of the sendaisle and receiving channel.

Wherein, the ALSA instruction includes: tinymix instruction；

Optionally, secure communication execution module 402 is used for starting in (SuSE) Linux OS initialization init process In call audio codec and open call access before, also (SuSE) Linux OS initialization init process in register And it is configured to the audio codec of call, comprising: create one for leading to using advanced Linux sound framework ALSA tool The audio codec example of words, configures the chip data of the audio codec, creates the function of the audio codec Energy component, registers the audio codec.

Optionally, secure communication execution module 402, for start modem and drive the modem according to Previously stored telephone number initiates calling, comprising:

Example 1

As shown in figure 5, example 1 of the present invention provides a kind of method of safety call, comprising the following steps:

Step S501, user indicate to make a phone call by safety call mode under Android system service environment；

Wherein, on the interface made a phone call under Android system service environment, provide the option of safety call mode for Family selection；

Step S502 saves telephone number, exits Android system service environment, restart (SuSE) Linux OS；

Step S503 starts (SuSE) Linux OS kernel；

Step S504 configures sound card (audio codec) using ALSA tool；

Wherein, custom code is run in the initialization init process of (SuSE) Linux OS, the custom code is used In starting audio codec and call access is opened, and starts modem and drives the modem according to it The telephone number of preceding preservation initiates calling；

ALSA (Advanced Linux Sound Architecture, advanced Linux sound framework) is operated in Linux Audio and MIDI are provided in system, and (Musical Instrument Digital Interface, Musical Instrument Digital connect Mouthful) support.In 2.6 serial kernels, ALSA has become the sound subsystem of default, for replacing in 2.4 serial kernels OSS (Open Sound System, open sound system).

After 2.6 kernel of Linux, ALSA has become kernel standard configuration, therefore, for using 2.6 kernel of Linux Android system, it is convenient to omit sound card adaptation procedure directly operates sound card by ALSA, opens and sends, receives required for call Channel.

Specifically, sound card is configured using ALSA tool, may comprise steps of:

1) a sound card example snd_card is created.

struct snd_card*card；

int err；

....

Err=snd_card_create (index, id, THIS_MODULE, 0, &card)；

The meaning of partial parameters in the example of the snd_card is shown in such as the following table 1.

Table 1

2) sound card chip data is configured

Data are mainly used for storing some resource informations of the sound card, such as interrupt resources, input/output interface resource (IO Resource), DMA (Direct Memory Access, direct memory access) resource etc..

3) ID and name of setting driving (Driver)

The ID character string of the in store chip of driving (Driver) field of snd_card example, the space user (user) (alsa-lib) will use the character string in the library ALSA, so it has to be ensured that the uniqueness of the ID.

4) functional component for creating sound card (belongs to logical device, such as PCM (pulse code modulation) component, Mixer is (mixed Sound device) component etc.)

The various functional components of sound card are created, snd_device_new () next life is eventually called in the creation of each component It is linked in the devices chained list of snd_card example at a snd_device example, and the snd_device example.

In general, the creation function of some common components has been provided in ALSA driving (alsa-driver), without straight It connects and calls snd_device_new (), for example, function creation PCM component directly can be created using the component in ALSA driving:

PCM----snd_pcm_new()

5) sound card is registered

For Qualcomm's platform, on the mobile terminal for having used oneself sound card of the Qualcomm such as WCD9335, BSP (Board Support Package, board suppot package) version has been completed above-mentioned configuration work.Sound card has directly The condition of work.

Step S505 configures call access using Tinymix instruction；

Using Tinymix instruction unpack transmission (Tx) relevant to call access, the channel (Rx) is received, that is, can guarantee calling Audio is normal afterwards；

With the citing of Qualcomm's platform mobile terminal, the mode for opening call related pathways is as follows:

Receiving direction:

Tinymix " RX1 MIX1 INP1 " value=" RX1 " (opens channel)

Tinymix " RX1 Digital Volume " value=" 84 " (gain configuration)

Sending direction:

Tinymix " IIR1 INP1 MUX " value=" DEC1 " (opens channel)

Tinymix " ADC1 Volume " value=" 8 " (gain configuration)

So far, required audio conditions of conversing have met.

Step S506 sends call instruction to modem Modem；

QMI (Qualcomm modem interface, the Qualcomm's modem of Qualcomm's platform can be passed through Interface) mode or MTK (Lian Fake company) platform AT (Attention, Modem commands) instruction directly and Modem It is communicated, completes call origination process；

Wherein, QMI is a kind of customized data-interface of Qualcomm, operating system application and bottom for terminal device The data communication of layer module.

For being communicated using the QMI mode of Qualcomm's platform with Modem, when calling, will use the interface function of QCRIL Information, example are conveyed to the side Modem by RPC (Remote Procedure Call Protocol, remote procedure call protocol) As AMSS [Token ID 53, srv type 6, called number 10086, CLIR 0, TTY 0] message can be by interface letter Number is converted into the information that Modem can be identified.

AT using MTK platform is instructed and is communicated with Modem, realizes that calling is then more simple, we directly adopt AT The mode of instruction is called.

Wherein, the basic format of AT order are as follows: AT+ command character and related setting parameter；

Such as: ATDT0,10086

This order indicates to dial outside line 10086 using voice-frequency dialing mode.AT is leading character, and D is command character, table Show that voice-frequency dialing is used in dialing, the expression of this parameter of T." 0 " is first dialled, delay disposal character late is indicated with comma thereafter, claims For dialing amendment symbol.

Step S507, judges whether calling terminates, and is to then follow the steps S508, no to then follow the steps S507；

Step S508 starts Android system service environment.

It is mobile to solve traditional Android for a kind of method and apparatus for realizing safety call that the embodiment of the present invention proposes Terminal has the risk for the privacy leakages such as recorded, monitored in communication process.Linux Kernel rank when desktop is inactive Section is operated, the function that Lai Shixian makes a phone call by the instruction set of ALSA advanced audio framework, the configuration of tinymix access and Modem Can, in the Linux Kernel stage, without file system, without data service channel, avoid recording that backstage may run, Monitor etc. malicious process carry out storage and on the possibility sent, provide the guarantee of personal secrets for call.

It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do There is also other identical elements in the process, method of element, article or device.

The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.

Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art The part contributed out can be embodied in the form of software products, which is stored in a storage medium In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, computer, clothes Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.

The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills Art field, is included within the scope of the present invention.

Claims

1. a kind of method for realizing secure communication is applied to mobile terminal, comprising:

After detecting that user is made a phone call using the mode of secure communication, telephone number is saved, Android system service environment is exited, Restart (SuSE) Linux OS；

After the starting of (SuSE) Linux OS kernel, sound of the starting for call in (SuSE) Linux OS initialization init process Frequency codec simultaneously opens call access, and starts modem and drive the modem according to previously stored Telephone number initiates calling；

After detecting the end of calling that the modem is initiated, Android system service environment is reentered；

The starting in (SuSE) Linux OS initialization init process for call audio codec and to open call logical Before road, the method also includes:

The audio codec of call is registered and is configured in (SuSE) Linux OS initialization init process, comprising: is used Advanced Linux sound framework ALSA tool creates an audio codec example for call, configures the audio and compiles solution The chip data of code device, creates the functional component of the audio codec, registers to the audio codec.

2. according to the method described in claim 1, it is characterized by:

Starting is used for the audio codec of call and opens call access in (SuSE) Linux OS initialization init process, Include:

It is opened using advanced Linux sound framework ALSA instruction for conversing in (SuSE) Linux OS initialization init process Audio codec sendaisle and receiving channel, the gain of the sendaisle and receiving channel is set.

3. according to the method described in claim 1, it is characterized by:

The starting modem simultaneously drives the modem to initiate to call according to previously stored telephone number, packet It includes:

Modem instruction and modulation comprising the telephone number are used in (SuSE) Linux OS initialization init process Demodulator is communicated, and is indicated that the modem transfers to the telephone number, is initiated calling.

4. according to the method described in claim 1, it is characterized by:

It is described to detect that user is made a phone call using the mode of secure communication, comprising:

After the starting of Android system service environment, detect that user has selected the option of secure communication on the interface made a phone call.

5. a kind of device for realizing secure communication is applied to mobile terminal, comprising:

Secure communication detection module saves telephone number after detecting that user is made a phone call using the mode of secure communication, Android system service environment is exited, (SuSE) Linux OS is restarted；

Secure communication execution module, for initializing init in (SuSE) Linux OS after the starting of (SuSE) Linux OS kernel Starting is used for the audio codec of call and opens call access in process, and starts modem and drive the tune Modulator-demodulator initiates to call according to previously stored telephone number；In the end of calling for detecting that the modem is initiated Afterwards, Android system service environment is reentered；

The secure communication execution module is also used to initialize what starting in init process was used to converse in (SuSE) Linux OS Audio codec and open call access before, also (SuSE) Linux OS initialization init process in register and configuration use In the audio codec of call, comprising: create an audio for call using advanced Linux sound framework ALSA tool Codec example configures the chip data of the audio codec, creates the functional component of the audio codec, right The audio codec is registered.

6. device according to claim 5, it is characterised in that:

Secure communication execution module, for audio volume of the starting for call in (SuSE) Linux OS initialization init process Decoder simultaneously opens call access, comprising:

7. device according to claim 5, it is characterised in that:

Secure communication execution module, for starting modem and driving the modem according to previously stored phone Number initiates calling, comprising:

8. device according to claim 5, it is characterised in that:

Secure communication detection module, for detecting that user is made a phone call using the mode of secure communication, comprising: