CN104092805A - Communication device dialing method and system - Google Patents
Communication device dialing method and system Download PDFInfo
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- CN104092805A CN104092805A CN201310109558.9A CN201310109558A CN104092805A CN 104092805 A CN104092805 A CN 104092805A CN 201310109558 A CN201310109558 A CN 201310109558A CN 104092805 A CN104092805 A CN 104092805A
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Abstract
The invention provides a communication device dialing method and system. The system comprises a first calculation module which is used for carrying out first preset operation to acquire a numerical value according to the international mobile device identity code or the mobile terminal identifier number of a communication device and dialing time, a second calculation module which is used for carrying out two times of second preset operation by calling a preset random function for two times to acquire two unequal frequencies in a DTMF frequency domain, an audio synthesis module which is used for sending two acquired frequencies to a baseband processing chip of the communication device and using a digital processor DSP of the baseband processing chip to process two acquired frequencies to acquire an audio, and an audio output module which is used for outputting the audio acquired through processing to an audio playback device, wherein the numerical value acquired through calculation is used as a random seed of the preset random function. According to the invention, two different frequencies which are randomly generated are used to replace two fixed frequencies of original dual tone multi-frequency, which prevents a dialing tone from being broken.
Description
Technical field
The present invention relates to a kind of communication apparatus Dialing Method and system.
Background technology
DTMF(Dual Tone Multi Frequency) be dual-tone multifrequency, formed by 4 high frequency groups and 4 low frequency groups fixed, wherein, a high-frequency signal and a low frequency signal superposition are a digital signal.For example, the sound of numeral 1 is high frequency 1209Hz and low frequency 697Hz superposition composition.But dtmf tone can crack, if recorded with the dialing in hands-free dialing or communication process, by means of audio analysis software, can crack easily dialled number, cause privacy to be invaded.
Summary of the invention
In view of above content, be necessary to provide a kind of communication apparatus Dialing Method and system.
Described communication apparatus Dialing Method comprises: when communication apparatus starts dialing and keypad tone while being opened, according to the International Mobile Equipment Identity code of communication apparatus or mobile terminal identification number and dialing time, carry out the first default computing to obtain a numerical value; Call twice default random function and carry out twice second default computings, to draw two unequal frequencies in DTMF frequency domain, the above-mentioned numerical value calculating is as the random seed of described default random function; In the time that the audio-frequence player device of communication apparatus is idle, two frequencies that obtain are delivered to the baseband processing chip of communication apparatus, utilize the digital processing unit DSP of baseband processing chip to process obtain two frequencies, obtain an audio frequency; The audio frequency that processing is obtained outputs to audio-frequence player device.
Described communication apparatus dial system comprises: the first computing module, for starting when communication apparatus to dial and keypad tone while being opened, according to the International Mobile Equipment Identity code of communication apparatus or mobile terminal identification number and dialing time, carry out the first default computing to obtain a numerical value; The second computing module, carries out twice second default computings for calling twice default random function, and to draw two unequal frequencies in DTMF frequency domain, the above-mentioned numerical value calculating is as the random seed of described default random function; Audio frequency synthesis module, for audio-frequence player device when free time when communication apparatus, two frequencies that obtain are delivered to the baseband processing chip of communication apparatus, utilized the digital processing unit DSP of baseband processing chip to process obtain two frequencies, obtain an audio frequency; Audio frequency output module, outputs to audio-frequence player device for the audio frequency that processing is obtained.
The present invention utilizes two different frequencies of random generation to replace two fixing frequencies of original dual tone multi-frequency dtmf, because frequency is no longer fixing, so the dialing tone producing just can not crack.
Brief description of the drawings
Fig. 1 is the running environment figure of the preferred embodiments of communication apparatus dial system of the present invention.
Fig. 2 is the functional block diagram of the preferred embodiments of communication apparatus dial system of the present invention.
Fig. 3 is the flow chart of the preferred embodiments of communication apparatus Dialing Method of the present invention.
Main element symbol description
| Communication apparatus | 1 |
| Communication apparatus dial system | 10 |
| Memory | 12 |
| Processor | 14 |
| Audio-frequence player device | 16 |
| Baseband processing chip | 18 |
| The first computing module | 100 |
| The second computing module | 102 |
| Audio frequency synthesis module | 104 |
| Audio frequency output module | 106 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
As shown in Figure 1, be the running environment figure of communication apparatus dial system of the present invention preferred embodiment.In the present embodiment, communication apparatus dial system 10 operates on a communication apparatus 1, and communication apparatus 1 can be panel computer, smart mobile phone, personal digital assistant etc., and this communication apparatus 1 further comprises memory 12, processor 14, audio-frequence player device 16, baseband processing chip 18.
Described memory 12 is for data such as the source program codes of memory communicating equipment dial system 10.
Described audio-frequence player device 16 is for playing the dialing tone of communication apparatus 1, and this audio-frequence player device 16 can be the audio-frequence player devices such as earphone, loud speaker.
Described baseband processing chip 18 comprises the English full name Digital of digital processing unit DSP(Signal Processing), this DSP, for a high frequency and a low frequency in DTMF frequency domain are processed, obtains an audio frequency.
In the present embodiment, described communication apparatus dial system 10 can be divided into one or more modules, and described one or more modules are configured to be carried out by one or more processors (the present embodiment is a processor 14), to complete the present invention.For example, consult shown in Fig. 2, described communication apparatus dial system 10 is divided into the first computing module 100, the second computing module 102, audio frequency synthesis module 104 and audio frequency output module 106.The alleged module of the present invention has been the program segment of a specific function, is more suitable in describing the implementation of software in communication apparatus 1, the description of consulting Fig. 3 about the function of each module than program.
As shown in Figure 3, be the flow chart of the preferred embodiment of communication apparatus Dialing Method of the present invention.
Step S11, when communication apparatus 1 starts dialing and keypad tone while being opened, the first computing module 100 is according to the IMEI(International Mobile Equipment Identity of communication apparatus 1, International Mobile Equipment Identity) code or MEID(Mobile Equipment Identifier, mobile terminal identification) number and dialing time, carry out the first default computing to obtain a numerical value.In present embodiment, the described first default computing can be for deducting this dialing time by 15 International Mobile Equipment Identity code IMEI or 14 s' mobile terminal identification MEID, obtain a numerical value, because the IMEI of each communication apparatus or be unique No. MEID, and the time of each dialing is also different, so more ensured the randomness of the numerical value getting.
Step S12, the second computing module 102 calls twice default random function and carries out twice second default computings, draw respectively two unequal frequencies in DTMF frequency domain (being between 697Hz ~ 1633Hz), described default random function is taking the above-mentioned numerical value calculating as random seed.In present embodiment, the described second default computing can be: be rand () % (N-M+1)+M, wherein rand() default random function, " % " represents delivery (Mod) computing, low frequency M is defined as 697HZ, and high frequency N is defined as 1633HZ.Cause is that people's ear acceptable frequency range is 20Hz ~ 20KHz, be infrasound lower than 20Hz, be ultrasonic wave higher than 20KHz, the frequency that the second default computing produces is between original High-frequency and low-frequency, between 697Hz ~ 1633Hz, so the audio frequency that the DSP of baseband processing chip 18 produces there will not be the phenomenon that low frequency is unable and high frequency is ear-piercing.In present embodiment, in the time that two frequencies that obtain equate, continue to call default random function and carry out the second default computing, until obtain two unequal frequencies.
Step S13, in the time that audio-frequence player device 16 is idle (for example, audio-frequence player device 16 is not play music or is carried out other functions), audio frequency synthesis module 104 is delivered to two frequencies obtained above the DSP of baseband processing chip 18, the DSP of baseband processing chip 18 processes described two frequencies, obtains an audio frequency.In present embodiment, for example, in the time that audio-frequence player device 16 is in busy state (, audio-frequence player device 16 is being play music or carried out other functions), audio frequency synthesis module 104 is exported information and is pointed out this audio-frequence player device unavailable.
Step S14, the audio frequency that audio frequency output module 106 obtains processing outputs to audio-frequence player device 16.
Step S11 utilizes two original two fixing frequencies of different frequencies replacement of random generation to step S14, because frequency is no longer fixing, so the dialing tone producing just can not crack.
Above execution mode is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not depart from the spirit and scope of technical solution of the present invention.
Claims (8)
1. a communication apparatus Dialing Method, is characterized in that, the method comprises:
When communication apparatus starts dialing and keypad tone while being opened, according to the International Mobile Equipment Identity code IMEI of communication apparatus or mobile terminal identification MEID and dialing time, carry out the first default computing to obtain a numerical value;
Call twice default random function and carry out twice second default computings, to draw two unequal frequencies in DTMF frequency domain, the above-mentioned numerical value calculating is as the random seed of described default random function;
In the time that the audio-frequence player device of communication apparatus is idle, two frequencies that obtain are delivered to the baseband processing chip of communication apparatus, utilize the digital processing unit DSP of baseband processing chip to process obtain two frequencies, obtain an audio frequency;
The audio frequency that processing is obtained outputs to audio-frequence player device.
2. communication apparatus Dialing Method according to claim 1, is characterized in that, the described first default computing is: by IMEI number or deduct this dialing time No. MEID.
3. communication apparatus Dialing Method according to claim 2, it is characterized in that, described default random function is rand() function, the described second default computing is: rand () % (N-M+1)+M, M is defined as low frequency, N is defined as high frequency, and operation result is the frequency that will obtain.
4. communication apparatus Dialing Method according to claim 1, is characterized in that, described method also comprises: in the time that two frequencies that obtain equate, continue to call default random function and carry out the second default computing, until obtain two unequal frequencies.
5. a communication apparatus dial system, is characterized in that, this system comprises:
The first computing module, for starting dialing and keypad tone when communication apparatus while being opened, according to the International Mobile Equipment Identity code IMEI of communication apparatus or mobile terminal identification MEID and dialing time, carries out the first default computing to obtain a numerical value;
The second computing module, carries out twice second default computings for calling twice default random function, and to draw two unequal frequencies in DTMF frequency domain, the above-mentioned numerical value calculating is as the random seed of described default random function;
Audio frequency synthesis module, for audio-frequence player device when free time when communication apparatus, two frequencies that obtain are delivered to the baseband processing chip of communication apparatus, utilized the digital processing unit DSP of baseband processing chip to process obtain two frequencies, obtain an audio frequency;
Audio frequency output module, outputs to audio-frequence player device for the audio frequency that processing is obtained.
6. communication apparatus dial system according to claim 5, is characterized in that, the described first default computing is: by IMEI number or deduct this dialing time No. MEID.
7. communication apparatus dial system according to claim 6, it is characterized in that, described default random function is rand() function, the described second default computing is: rand () % (N-M+1)+M, M is defined as low frequency, N is defined as high frequency, and operation result is the frequency that will obtain.
8. communication apparatus dial system according to claim 5, is characterized in that, described the second computing module, also in the time that two frequencies that obtain equate, continues to call default random function and carries out the second default computing, until obtain two unequal frequencies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310109558.9A CN104092805B (en) | 2013-04-01 | 2013-04-01 | Communication apparatus Dialing Method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310109558.9A CN104092805B (en) | 2013-04-01 | 2013-04-01 | Communication apparatus Dialing Method and system |
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| CN104092805A true CN104092805A (en) | 2014-10-08 |
| CN104092805B CN104092805B (en) | 2018-09-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105120443A (en) * | 2015-07-22 | 2015-12-02 | 重庆邮电大学 | Method for improving success rate of secondary dial-up of dual-tone multi-frequency DTMF signal |
| CN106550144A (en) * | 2016-10-27 | 2017-03-29 | 乐视控股（北京）有限公司 | Dialing Method and dialing mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1365222A (en) * | 2002-02-26 | 2002-08-21 | 温源 | Audio frequency directly dialing method and device for double tone multiple frequency telephone set |
| TW200729975A (en) * | 2005-09-30 | 2007-08-01 | Trinity Convergence Inc | Systems and methods for dual-tone multiple frequency symbol detection |
| CN102932515A (en) * | 2012-10-15 | 2013-02-13 | 广东欧珀移动通信有限公司 | Method and terminal for promoting dialing security |
-
2013
- 2013-04-01 CN CN201310109558.9A patent/CN104092805B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1365222A (en) * | 2002-02-26 | 2002-08-21 | 温源 | Audio frequency directly dialing method and device for double tone multiple frequency telephone set |
| TW200729975A (en) * | 2005-09-30 | 2007-08-01 | Trinity Convergence Inc | Systems and methods for dual-tone multiple frequency symbol detection |
| CN102932515A (en) * | 2012-10-15 | 2013-02-13 | 广东欧珀移动通信有限公司 | Method and terminal for promoting dialing security |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105120443A (en) * | 2015-07-22 | 2015-12-02 | 重庆邮电大学 | Method for improving success rate of secondary dial-up of dual-tone multi-frequency DTMF signal |
| CN106550144A (en) * | 2016-10-27 | 2017-03-29 | 乐视控股（北京）有限公司 | Dialing Method and dialing mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104092805B (en) | 2018-09-07 |
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