CN2532631Y - Audio frequency direct dialing device for double sound multi-frequency telephone set - Google Patents
Audio frequency direct dialing device for double sound multi-frequency telephone set Download PDFInfo
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- CN2532631Y CN2532631Y CN 02205824 CN02205824U CN2532631Y CN 2532631 Y CN2532631 Y CN 2532631Y CN 02205824 CN02205824 CN 02205824 CN 02205824 U CN02205824 U CN 02205824U CN 2532631 Y CN2532631 Y CN 2532631Y
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Abstract
The utility model relates to an audio frequency direct dial device of a dual tone multi frequency (DTMF) telephone. Mobile phones with extended functions, or palmtop computers, or personal digital assistants (PDA) are used as dial devices. That is to say, DTMF signal generators and amplifiers are added to the original devices which are also connected with original controlling circuits (CPU) and loudspeakers. The direct dial method adopted works when the telephone number sequence stored in a dial device numbering book is turned into a DTMF dial tone sequence; the DTMF dial tone sequence is directly received by the phone receiver of a DT-MF fixed telephone so that DTMF dial can be performed. The steps include the following. DTMF dial function options associated with the telephone number sequence inside the device are set in a dial device software; after the DTMF dial function options are activated, each number in the telephone number sequence selected will be turned into a corresponding DTMF signal by the DTMF signal generator; the DTMF signal that corresponds to each number among the selected telephone number sequence is output by the loudspeaker of the device intermittently.
Description
Technical field
The utility model relates to communication technical field, relates to a kind of by producing the device that Dual Tone Multifrequency dialing tone sequence directly dials to fixing Dual Tone Multifrequency telephone set or rather.
Background technology
As everyone knows, need to make a phone call dialing earlier.A fixing Dual Tone Multifrequency telephone set, after dialing, by the telephone set internal circuit according to dial the number, produce the Dual Tone Multifrequency signal corresponding with number, pass to stored-program control exchange by circuit, after decoding, carry out calling and called both sides' talking connection.The combination of frequency of the double-audio signal of GB GB3378-82 regulation and with the relation of number shown in following table one:
| High frequency group | H1 | H2 | H3 | H4 | |
| Low frequency group | 1209 | 1336 | 1477 | 1633 | |
| L1 | 697 | 1 | 2 | 3 | A |
| L2 | 770 | 4 | 5 | 6 | B |
| L3 | 852 | 7 | 8 | 9 | C |
| L4 | 941 | * | 0 | # | D |
List 8 single audio signals that are used to produce any one dialing tone sequence in the table, correspond respectively to DTMF high frequency group frequency 1209Hz, 1336Hz, 1477Hz, 1633Hz and low frequency group frequency 697Hz, 770Hz, 852Hz, 941Hz.If each single audio signal is stored as a single audio signal file, 8 single audio signal files just can satisfy generation " 0 "～" 9 ", " A "～, " D ", " * ", " # " dtmf signal of any title in totally 16 button titles.
Pairing 4 keys of the high frequency group H4 that lists in the table one " A ", " B ", " C ", " D " is that special purpose is required, only consider when considering mobile phone or PDA or palmtop PC storing phone number " 0 "～" 9 ", " * ", " # " totally 12 keys, and the general user do not need " A ", " B ", therefore " C ", " D " key can only be preserved the constituent instruments of 12 dtmf signals.
For the DTMF telephone set, because in fact dialing tone and user's call voice is propagated by same telephone line, therefore, audio frequency directly sends the receiver of telephone set (or microphone) to if will dial, just can realize dialing, and needn't transfer to the called phone number one by one in proper order at DTMF landline telephone hands-operation button with indirect mode.
At present, portable terminal (as mobile phone, car phone machine etc.) and PDA (Personal Digital Assistant) (PDA) and palmtop PC etc., had very powerful and abundant intelligent function, as the telephone directory function of one of them, the user just can find needed telephone number (perhaps other information) like a cork by the record that inquiry is stored among mobile phone or palmtop PC or the PDA, can replace the telephone directory of hand-written record to a certain extent.
Yet, because the difference between mobile phone and landline telephone post and telecommunication tariff, and the mobile phone electromagnetic wave width of cloth is penetrated the problem that is detrimental to health, people still can use fixed telephone to make a phone call as far as possible, earlier find desired telephone number as the user from mobile phone (or PDA (Personal Digital Assistant) PDA or palmtop PC), dial on fixed telephone according to shown number again, needing to knock telephone keypad by hand carries out, efficient is low, error rate is high, the more important thing is not allow mobile phone (or PDA (Personal Digital Assistant) PDA or palmtop PC) make the best use of everything.
Summary of the invention
The purpose of this utility model is the audio frequency dial-in direct device of a kind of double tone multiple frequency telephone set of design, make full use of the thin function of phone number of mobile phone or palmtop PC or PDA, fixing double tone multiple frequency telephone set is carried out the audio frequency dial-in direct, both make things convenient for the user, widened the application of mobile phone or palmtop PC or PDA again.
The technical scheme that realizes the utility model purpose is such: a kind of audio frequency dial-in direct device of double tone multiple frequency telephone set, it is characterized in that: described dialing mechanism is mobile phone or palmtop PC or the PDA (Personal Digital Assistant) that is provided with the DTMF pulsing function, comprise dual tone multi-frequency signal generator and the amplifier that is attached thereto, the control end of dtmf generator is connected with the control circuit of mobile phone or palmtop PC or PDA (Personal Digital Assistant), and amplifier out is connected with the loud speaker of mobile phone or palmtop PC or PDA (Personal Digital Assistant).
Described dtmf generator is an integrated circuit modules that can produce each touch-tone signal successively.
Described dtmf generator is an integrated circuit modules that can once produce the dual-tone multifrequency sequence signal.
The utility model produces dtmf dialing sound sequence by mobile phone or palmtop PC or PDA (Personal Digital Assistant) by hardware mode (also can pass through software mode), and they can directly be dialled to the DTMF telephone set.
The utility model has the advantages that: increasing hardly under the condition of cost,, realizing the audio frequency dial-in direct of double tone multiple frequency telephone set by being the additional new function of mobile phone or palmtop PC or PDA (Personal Digital Assistant).Although mobile phone itself is exactly the conversation instrument, under mobile phone and the simultaneous situation of fixed telephone,, guarantee speech quality for saving the conversation cost, the user selects fixed telephone to be better than selecting mobile phone.The utility model directly utilizes the telephone number deposited in mobile phone or palmtop PC or the PDA (Personal Digital Assistant) and powerful memory, intelligent management function to fixing DTMF telephone set dialing, meets user's this demand just, for the user brings convenience.In addition, when mobile phone is shut down because of temporary transient arrearage, also can utilize its touch-tone signal function directly the dual-tone multifrequency fixed telephone to be dialled.
Description of drawings
Fig. 1 is an audio frequency dial-in direct method schematic diagram of the present utility model;
Fig. 2 a is the software interface schematic diagram on middle MMI foreground of mobile phone (or palmtop PC or PDA) and dtmf dialing backstage;
Fig. 2 b is a MMI foreground process flow block diagram;
Fig. 3 is that the utility model utilizes mobile phone (or palmtop PC or PDA) software to produce a kind of implementation method flow process, the structure principle chart of voice-frequency dialing sound, comprises Fig. 3 a, Fig. 3 b and Fig. 3 c;
Fig. 4 is the digital dtmf signal sequence schematic diagram when generating number sequence " 1122 " by the utility model device;
Fig. 5 is the structured flowchart of audio frequency dial-in direct device-mobile phone of the present utility model (or palmtop PC or PDA);
Fig. 6 is the implementing procedure block diagram that produces the voice-frequency dialing sound with mobile phone (or palmtop PC or PDA) hardware of the present utility model.
Embodiment
Referring to Fig. 1, the technical scheme that the utility model device is adopted is to utilize mobile phone (or palmtop PC or PDA) to produce dtmf dialing sound sequence, as shown in FIG. 87654321, to DTMF telephone set (aiming at receiver or microphone) dial-in direct.
As shown in FIG., when the user uses mobile phone, after choosing desired telephone number sequence, mobile phone speaker is aimed at the microphone of DTMF telephone set, the user presses the button that mobile phone is set, the dtmf dialing function that Activates Phone produces the dialing tone sequence, and the dialing tone sequence enters the direct voice-frequency dialing that microphone is realized telephone set.
Implementation step is: the dtmf dialing function choosing-item is set in cell phone software, the telephone number sequence of storing in this option and the cell-phone telephone number book is associated, when the user chooses the dtmf dialing function choosing-item in modes such as buttons, activate the dtmf dialing function, mobile phone utilizes hardware (or software) to generate dtmf signal for each number in the telephone number sequence of choosing, a plurality of dtmf signals are exported at interval by mobile phone speaker and are formed dtmf dialing sound sequence, when mobile phone speaker is aimed at the receiver (microphone) of DTMF telephone set, the dialing tone sequence enters the DTMF telephone set, realizes dial-in direct.
Consider the dialing effect, can when dialing, automatically the mobile phone speaker output volume be transferred to maximum, to improve signal to noise ratio by cell phone system.
The utility model produces dtmf dialing sound sequence and makes the dialing of DTMF telephone set, mobile phone or palmtop PC or PDA can produce dtmf signal by hardware or software mode, wherein software mode can have multiple embodiments, as 12 DTMF baseband signal files of storage in the mobile phone memory body, produce the dtmf dialing sound by calling DTMF baseband signal file; As 7 simple signal constituent instruments of storage in the mobile phone memory body, these simple signal constituent instruments are a plurality of constituent instruments that can be used for being combined into any each single audio signal of dialing tone sequence, by calling two simple signal constituent instruments and carrying out addition, come the dtmf signal of a telephone number of combination results; With the computing function of utilizing mobile phone, utilize the sine or the cosine function of two single-frequency frequency values, produce dtmf signal by calculating.
Referring to Fig. 2, Fig. 2 a is the software interface schematic diagram on MMI (man-machine interface) foreground and dtmf dialing backstage, and Fig. 2 b is a MMI foreground process chart.
The utility model utilizes mobile phone (or PDA or palmtop PC) to generate the method for dtmf signal, is achieved through the following technical solutions, and with the mobile phone example, flow process shown in Fig. 2 a:
Send call request by MMI (man-machine interface) foreground program to dtmf dialing background task program, the MMI foreground program be responsible between process user and mobile phone man-machine interaction and after knowing that the user selects, call backstage DTMF function;
After dtmf dialing background task program is received request, read the telephone number sequence that the user chooses, adjust mobile phone volume to maximum, utilize the method that hardware generates or software is synthetic to produce dtmf dialing sound sequence, dtmf dialing sound sequence is exported by mobile phone speaker.
After the task of generation dtmf dialing sound sequence is finished, dtmf dialing background task program notice foreground program " dialing finishes to confirm ", the MMI foreground program receives after backstage dtmf dialing program task finishes signal, show " redialing " or " withdrawing from " option to the user, or change other states over to, do new operation as the prompting user.Select the user can call the dtmf dialing function once more under the situation of " redialing ".
Process from MMI (man-machine interface) foreground program to dtmf dialing background task program that sent call request by further is shown among Fig. 2 b.With cell-phone telephone book in name or the menu option that is associated of telephone number sequence in the dtmf dialing function choosing-item is set, the telephone number sequence of storing in this option and the cell-phone telephone number book is associated, for each telephone number sequence that is stored in the cell-phone telephone number book, after the user chooses its dtmf dialing function choosing-item in modes such as buttons, MMI software foreground program initiatively calls backstage dtmf dialing program, realizes the dtmf dialing function.Concrete steps comprise:
Press menu option by the user;
Enter menu option;
The choice menus option; With
Carry out menu function, send the dtmf dialing request to dtmf dialing background task program.
Dtmf dialing background task program also is the dtmf dialing program, is responsible for receiving the foreground call request, reads the telephone number sequence that the user chooses, and mobile phone volume is adjusted to maximum, utilizes the method that hardware generates or software is synthetic to produce dtmf dialing sound sequence.
Referring to Fig. 3 a, produce the theory diagram of dtmf dialing sound sequence for typically utilizing cell phone system.Comprise central processing unit and the input unit that is connected with central processing unit respectively, D/A, display screen and memory, loud speaker is connected with D/A, stores telephone directory book and DTMF digital signal file in the memory.This structure can be used for realizing that the aforementioned software approach that utilizes produces dtmf dialing sound sequence.
Storage DTMF digital signal file in memory produces dtmf dialing sound sequence by calling DTMF digital signal file.
This DTMF digital signal file is to be stored in can be used in the mobile phone memory to be combined into a plurality of files of any dtmf dialing sound sequence signal, as 12 respectively corresponding " 0 ", " 1 " ... " 8 ", " 9 ", " * ", and the dtmf signal of " # ", or 7 single audio signal files of 3 frequencies of corresponding high frequency group, 4 frequencies of low frequency group respectively, be used for being combined in twos 0 "; " 1 " ... " 8 "; " 9 ", " * ", and the dtmf signal of " # ".
The signal amplitude of each dialing tone constituent instruments of being stored should be set to be the bigger the better, and can be set to maximum, to help improving the signal to noise ratio of output signal.
The signal file of storage can compressed processing, also can be (A represents signal amplitude among the figure, numeral sampled point or sampling instant under the transverse axis) that uncompressed was handled.
Memory in order to storage dtmf signal file, be meant that all can be used for storing the device of digital dtmf signal in mobile phone or PDA or the palmtop PC, can be ROM, EPROM, the FLASH memory, can be the part of curing data in mobile phone or PDA or the palmtop PC chip, also can be the peripheral chip of mobile phone or PDA or palmtop PC chip, for example recording chip etc.
In conjunction with referring to Fig. 3 b, be to utilize software mode to generate a kind of method flow of dtmf dialing sound sequence.After the user has selected the number that will dial and has started dialing, generate dtmf dialing sound sequence according to the following step, suppose that the telephone number figure place that will produce is designated as N, current is the K time generation dtmf signal, is designated as figure place K:
The 1st step produced dtmf signal, beginning;
In the 2nd step, initialization obtains the user and chooses number sequence, and current figure place K is changed to 1;
In the 3rd step, obtain and K the initial address of DTMF digital signal file in memory that number is corresponding;
The 4th the step, read stored in this address with pairing pair of audio digital signals of K number;
The 5th step is to carrying out D/A switch with K the pairing digital dual audio signal of number;
The 6th step, loudspeaker plays simulated dual audio signal;
In the 7th step, figure place mark K increases 1 (K=K+1);
The 8th step, is K greater than N? if K 〉=N then entered for the 10th step, finish the process of whole generation dtmf signal, if K＜N then entered for the 9th step, repeated execution of steps 3 is to step 8 then;
In the 9th step, 100 milliseconds at interval turned back to for the 3rd step, and it is next to continue generation, and promptly (K+1) individual dtmf signal repeats the 3rd and goes on foot the 8th process that goes on foot;
The 10th step, the production process of end dtmf signal.
Wherein, read the initial address of digital dual audio signal in the 3rd step, be by the number title, and then search the initial address of the digital dual audio signal file of this number correspondence, obtaining this address is to prepare for step 4 reading of data, shown in Fig. 3 c, the left side is the number title among the figure, and the right side is digital dual audio signal file the initial address in memory corresponding with the number title.
In addition, in the 4th step,, then also should decode earlier, and then deliver to the D/A conversion and the broadcast of raising one's voice if the digital dual audio signal file that reads is encoded compression.
The digital dtmf signal sequence of number sequence shown in Fig. 4 " 1122 ", according to GB GB3378-82, the duration of the dtmf signal constituent instruments of each storage, should be at least 30ms, but in order to increase the reliability of dialing, should increase the duration of signal, for example can increase to 100ms.The duration of signal shown in the figure is 100 milliseconds, 100 milliseconds of two signal interbody spacers.
Referring to Fig. 5, the handset structure (except that radio-circuit, the basic structure of palmtop PC or PDA is to that indicated in the drawings identical, no longer exemplifies) when utilizing hardware to generate dtmf signal shown in the figure.The mobile phone original structure mainly comprises power circuit 712, control circuit 701 (central processing units, CPU), memory 706, radio-circuit 707, speech processing circuit 705, LCD display 708, user interface 709, show with light-emitting diode 711, buzzer BZ, motor M, loud speaker 704, microphone 710 etc., increased and adopted the dual tone multi-frequency signal generator 702 of finished product integrated circuit (as dtmf code device TMS320C10, the HT9200A/9200B type DTMF generator of producing as HOLTEK company) and amplifier 703, under control circuit 701 controls, produce the dtmf signal sequence successively.
Referring to Fig. 6 in conjunction with referring to Fig. 5, after the user has selected the number sequence that will dial and has started dialing, cell phone control circuit 701 control DTMF generators 702 are by following steps in sequence generation dtmf signal, if the telephone number figure place that produces is designated as N, current is the K time generation dtmf signal, is designated as figure place K.
The 1st step produced dtmf signal, beginning;
In the 2nd step, initialization is changed to 1 with current figure place K;
In the 3rd step, control circuit 701 sends the control signal of representing K number to DTMF generator 702;
In the 4th step, DTMF generator 702 produces and K the dtmf signal that number is corresponding, delivers to amplifier 703;
In the 5th step, loud speaker 704 is delivered in the dtmf signal amplification that amplifier 703 will be corresponding with K number;
The 6th step, loud speaker 704 play through amplify with K the dtmf signal that number is corresponding;
In the 7th step, figure place mark K increases 1 (K=K+1);
The 8th step, is K greater than N? if K 〉=N then entered for the 10th step, finish the process of whole generation dtmf signal, if K＜N then entered for the 9th step, repeated execution of steps 3 is to step 8 then;
In the 9th step, the 3rd step was returned in 100 milliseconds at interval, and it is next to continue generation, and promptly (K+1) individual dtmf signal repeats the 3rd and goes on foot the 8th process that goes on foot;
In the 10th step, produce dtmf signal and finish.
In embodiment illustrated in fig. 5, also can adopt two audio-frequency generator integrated circuits that can once produce the dtmf signal sequence of finished product, disposable this DTMF generator of delivering to of telephone number sequence that control circuit is chosen the user, have the dtmf signal sequence of Fixed Time Interval by this DTMF generator according to automatic generation of the number sequence that receives, control circuit need not to consider two time intervals between numerical signal.Dtmf signal is gone out by amplifier, loudspeaker plays.
The utility model fills the telephone directory function that part is utilized mobile phone or palmtop PC or PDA (Personal Digital Assistant) (PDA), choose telephone number sequence the user, and after the loud speaker of mobile phone or palmtop PC or PDA (Personal Digital Assistant) (PDA) being aimed at the microphone of DTMF fixed telephone, only need press mobile phone or palmtop PC or PDA (Personal Digital Assistant) (PDA) and go up the function key of setting, activate its dtmf dialing function, just can produce needed dtmf dialing sound sequence, enter the microphone of fixed telephone, realize the dial-in direct of telephone set.
The utility model directly utilizes dtmf signal generation method, the audio frequency signal output of mobile phone or palmtop PC or PDA (Personal Digital Assistant), and to the automatic dial method of DTMF fixed telephone, can be widely used in wireless and the telephone communication in.
Claims (3)
1. the audio frequency dial-in direct device of a double tone multiple frequency telephone set is characterized in that:
Described dialing mechanism is mobile phone or palmtop PC or the PDA (Personal Digital Assistant) that is provided with the DTMF pulsing function, comprise dual tone multi-frequency signal generator and the amplifier that is attached thereto, the control end of dtmf generator is connected with the control circuit of mobile phone or palmtop PC or PDA (Personal Digital Assistant), and amplifier out is connected with the loud speaker of mobile phone or palmtop PC or PDA (Personal Digital Assistant).
2. the audio frequency dial-in direct device of a kind of double tone multiple frequency telephone set according to claim 1, it is characterized in that: described dtmf generator is an integrated circuit modules that can produce each touch-tone signal successively.
3. the audio frequency dial-in direct device of a kind of double tone multiple frequency telephone set according to claim 1, it is characterized in that: described dtmf generator is an integrated circuit modules that can once produce the dual-tone multifrequency sequence signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02205824 CN2532631Y (en) | 2002-02-26 | 2002-02-26 | Audio frequency direct dialing device for double sound multi-frequency telephone set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02205824 CN2532631Y (en) | 2002-02-26 | 2002-02-26 | Audio frequency direct dialing device for double sound multi-frequency telephone set |
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| Publication Number | Publication Date |
|---|---|
| CN2532631Y true CN2532631Y (en) | 2003-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02205824 Expired - Fee Related CN2532631Y (en) | 2002-02-26 | 2002-02-26 | Audio frequency direct dialing device for double sound multi-frequency telephone set |
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| CN (1) | CN2532631Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384273C (en) * | 2003-04-10 | 2008-04-23 | 明基电通股份有限公司 | Radio device telephone directly-dialing data base management containing limited non-volatile internal memory |
| WO2009053860A1 (en) * | 2007-10-26 | 2009-04-30 | Shyam Kedare | Aural compensation for achieving uniform accessibility for computing resources |
| CN108184034A (en) * | 2018-03-05 | 2018-06-19 | 厦门盈趣科技股份有限公司 | Dialing method and communication system |
-
2002
- 2002-02-26 CN CN 02205824 patent/CN2532631Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384273C (en) * | 2003-04-10 | 2008-04-23 | 明基电通股份有限公司 | Radio device telephone directly-dialing data base management containing limited non-volatile internal memory |
| WO2009053860A1 (en) * | 2007-10-26 | 2009-04-30 | Shyam Kedare | Aural compensation for achieving uniform accessibility for computing resources |
| CN108184034A (en) * | 2018-03-05 | 2018-06-19 | 厦门盈趣科技股份有限公司 | Dialing method and communication system |
| CN108184034B (en) * | 2018-03-05 | 2021-04-06 | 厦门盈趣科技股份有限公司 | Dialing method and communication system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |