CN101072405A - Device and method for realizing mobile communication terminal handfree function - Google Patents
Device and method for realizing mobile communication terminal handfree function Download PDFInfo
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- CN101072405A CN101072405A CNA2007100750224A CN200710075022A CN101072405A CN 101072405 A CN101072405 A CN 101072405A CN A2007100750224 A CNA2007100750224 A CN A2007100750224A CN 200710075022 A CN200710075022 A CN 200710075022A CN 101072405 A CN101072405 A CN 101072405A
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Abstract
The method includes steps: (1) adding a transmission module in frequency modulation in mobile communication terminal (MCT); (2) setting up a control switch on the line of outputting voice signal; (3) setting up switch control circuit between basic module and control switch of MCT; (4) starting up control switch to switch voice signal to transmission module in frequency modulation, and modulating the voice signal, and transmitting the modulated signal; (5) starting up tuning FM receiver to demodulate the received modulated signal to voice signal, which is played through speaker. The invention also discloses a device for realizing free of lifting up function of MCT.
Description
Technical field
The present invention relates to field of mobile communication, relate in particular to a kind of devices and methods therefor of realizing mobile communication terminal handfree function.
Background technology
Communication terminal is more and more universal, and the application scenario is also more and more.A lot of occasions are arranged, and are that inconvenient directly catching answered a call during such as driving.Therefore, in order to satisfy the application portability of communication terminal in these occasions, derive multiple solution, a kind of method is to adopt wired or wireless headset receives calls; Another kind method is that the design of the Headphone volume of communication terminal is big, to realize picking up also direct hand-free call of terminal.
But these two kinds of methods all have weak point separately.Preceding a kind of method might shield external sound when earphone is filled in ear; Like this, in some occasion, such as in startup procedure, the driver may not hear the safety warning sound that comes from the outside because of the shield factor of earphone and causes traffic accident; And no matter be wired or wireless headset, earphone always will attach on ear, gives a kind of uncomfortable sensation of ear; And adopt a kind of method in back that certain limitation is also arranged, and promptly communication terminal external form volume is to do littler and littler, do thinner and thinner, the volume of leaving the sound chamber for is also just more and more littler, thereby makes that raising Headphone volume is restricted.
Therefore, prior art awaits to improve and development.
Summary of the invention
Problem to be solved by this invention provides a kind of safe, comfortable, and need not to raise the method that just can realize mobile communication terminal handfree function of Headphone volume.
In order to address the above problem, the invention provides a kind of method that realizes mobile communication terminal handfree function, this method step is as follows:
A, a frequency modulation transmitter module is set on communication terminal, is used for voice signal is modulated to modulation signal, and launches this modulation signal;
B, a control switch is set on the outlet line of described voice signal, is used to control the switching of described voice signal between communication terminal receiver and described frequency modulation transmitter module;
C, between communication terminal basic module and control switch, be provided with an ON-OFF control circuit, provide switch controlling signal, be used to control described control switch to described control switch;
D, start described control switch, described voice signal is switched to the jargon tone signal modulation of going forward side by side on the described frequency modulation transmitter module, and the modulation signal after will modulating is launched;
E, startup tuning modulation receiver receive the described modulation signal that described step D sends, and this modulation signal are demodulated into described voice signal, and pass through loudspeaker plays.
Wherein, in described steps A, described frequency modulation transmitter module comprises a modulation circuit, is used for described voice signal is modulated to modulation signal; And a radiating circuit, be used to launch described modulation signal.
Described modulation circuit is provided with the adjustable modulator of a modulating frequency, is used to adapt to different occasion needs.
Described radiating circuit comprises an amplifier, is used to realize the adjustment of transmitting power.
Wherein, in described step B, described control switch is the two switches of putting of hilted broadsword, or puts switch for double-pole is two.
Wherein, in described step C, described switch controlling signal is produced by hardware circuit control, or is produced by software module control.
Another problem to be solved by this invention provides a kind of device of realizing mobile communication terminal handfree function, comprises a communication terminal; Wherein, described communication terminal comprises:
One portable terminal basic module is used to send described voice signal;
One communication terminal receiver is used to receive calls;
One frequency modulation transmitter module is connected in parallel on the described voice signal output circuit with described communication terminal receiver, is used for voice signal is modulated to modulation signal, and launches this modulation signal;
One control switch, be arranged on the outlet line of described voice signal, this control switch is provided with two signal output parts, be connected with described communication terminal receiver and frequency modulation transmitter module respectively, be used for the switching of described voice signal between communication terminal receiver and described frequency modulation transmitter module; And
One ON-OFF control circuit is arranged between described portable terminal basic module and the control switch, provides switch controlling signal to described control switch, is used to control described control switch;
Described device also comprises a tuning modulation receiver, is used to receive and separate the described voice signal of launching after the described frequency modulation transmitter module modulation of menstruation regulating, and passes through loudspeaker plays.
Wherein, described tuning modulation receiver comprises a receiver, is used to receive the described modulation signal that communication terminal is launched; One tuning demodulation module is connected with described receiver, is used for that described receiver is connect the described modulation signal that transports and is demodulated into voice signal; And an audio playing module, be connected with described tuning, demodulation module and loud speaker, be used for described voice signal is converted into audio signal, and by described loudspeaker plays.
Compared with prior art, the present invention utilizes the frequency modulation transmitter module that voice signal is modulated to modulation signal, and launches this modulation signal, utilizes a tuning modulation receiver to receive described modulation signal again and is demodulated into described audio signal, use loudspeaker plays, thereby reach the effect of hand-free call.
Description of drawings
Fig. 1 is the mobile communication terminal call functional-block diagram commonly used of prior art of the present invention;
Fig. 2 realizes the hand-free call functional-block diagram for the communication terminal of preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in further detail.
Design principle of the present invention: utilize existing communication terminal 100, as shown in Figure 1, portion increases by a described frequency modulation transmitter module 130 within it, as shown in Figure 2, is connected in parallel on the outlet line of described voice signal with described communication terminal receiver 130.When the voice signal outlet line conducting between described communication terminal basic module 110 and the described frequency modulation transmitter module 130, described voice signal is modulated to modulation signal through described frequency modulation transmitter module 130, and launches this modulation signal; Then, utilize a tuning modulation receiver again, in the present embodiment, be FM receiver 200, receive described modulation signal, and this modulation signal of demodulation is voice signal, play, thereby realize communication terminal 100 hand-free call functions by loud speaker 240.
A kind of method that realizes mobile communication terminal handfree function provided by the invention, its step is as follows:
A, on communication terminal 100, set up a frequency modulation transmitter module 140, be connected in parallel on the outlet line of described voice signal with described communication terminal receiver 130; This frequency modulation transmitter module 140 is used for voice signal is modulated to modulation signal, and launches this modulation signal;
B, a control switch 120 is set on described voice signal outlet line, the one signal input part is connected with described frequency modulation transmitter module 130 with described communication terminal basic module 110, two signal output parts are connected with described communication terminal receiver 130 and described frequency modulation transmitter module 140 respectively, are used to control the switching of described voice signal between described communication terminal receiver 130 and described frequency modulation transmitter module 140;
C, between described communication terminal basic module 110 and control switch 120, also be provided with an ON-OFF control circuit 150; The signal input part of this ON-OFF control circuit is connected with described communication terminal basic module 110, and signal output part is connected with another signal input part of described control switch 120; This ON-OFF control circuit provides switch controlling signal to described control switch 120, is used to control described control switch 120, and described voice signal is switched between described modulate emission module 140 and communication terminal receiver 130 mutually;
D, the described ON-OFF control circuit 150 of startup, send corresponding switch controlling signal, control described control switch 120 by this switch controlling signal, switch to described voice signal on the described frequency modulation transmitter module 140 and be modulated to modulation signal, and this modulation signal is launched;
E, described tuning modulation receiver is carried out frequency-selecting, receive the modulation signal that described step D launches, and this modulation signal is demodulated into described voice signal, and by sending speech to the external world on the loud speaker 240; Wherein, in the present embodiment, described tuning modulation receiver is a FM receiver 200.
Wherein, in described steps A, described frequency modulation transmitter module 140 comprises modulation circuit and radiating circuit; Described modulation circuit is modulated into modulation signal with described voice signal, by described radiating circuit this modulation signal is launched with the form of radio wave again.Yet, sometimes, the adjustable modulator of a modulating frequency can also be set in described modulation circuit in order to adapt to different occasion needs; In addition, in described radiating circuit, also be provided with an amplifier, so just can realize the adjustment of transmitting power, prevent the decay in the communication process aloft of described modulation signal electric wave, speech modulation signal one clear, high-fidelity is provided.
Wherein, in described step B, described control switch 120 is put switch for hilted broadsword is two, perhaps put switch for double-pole is two, also can adopt other control switch, such as electromagnetically operated valve, electromagnetic relay etc.Described control switch 120 switches described voice signal by the switch controlling signal control that described ON-OFF control circuit 150 provides between described communication terminal receiver 130 and frequency modulation transmitter module 140; For example, when the user need use the hand-free call function, the user can handle certain controlled function button of described ON-OFF control circuit, or the controlled function in the setup menu, make described ON-OFF control circuit produce a current signal, control described control switch 120 by this current signal, connect the signal circuit between described communication terminal basic module 110 and the described frequency modulation transmitter module 140, described voice signal is delivered to frequency modulation transmitter module 140, and this voice signal is carried out modulation treatment, and launch the modulation signal after the modulation.
Wherein, in described step C, described switch controlling signal is produced by hardware circuit, promptly push or stir the button that is arranged on the communication terminal by button, starting switch control circuit 150 also provides a switch controlling signal, control described control switch 120 by this switch controlling signal, realize that the signal of described voice signal between described communication terminal receiver 130 and frequency modulation transmitter module 140 switches; Described switch controlling signal also can be produced by software module system, promptly in described communication terminal 100 internal preset one software module, operate the function operating key of communication terminal 100 then, enter function menu, preestablish the hands-free words function of answering of incoming call, when phone is linked into communication terminal 100, described ON-OFF control circuit 150 will provide a switch controlling signal to output on the described control switch 120, make " communication terminal basic module-control switch-frequency modulation transmitter module " this voice signal outlet line conducting, described voice signal is transported on the described frequency modulation transmitter module 140 by described control switch, and be modulated to modulation signal, and launch this modulation signal.
A kind of device of realizing mobile communication terminal handfree function of the present invention as shown in Figure 2, comprises a communication terminal 100 and a tuning modulation receiver, adopts FM receiver 200 in the present embodiment; Described communication terminal 100 is used to answer described voice signal, or the described voice signal of emission after modulation; Described FM receiver 200 is used to receive and separate the described voice signal of launching after described communication terminal 100 modulation of menstruation regulating, and plays by loud speaker 240, thereby realizes communication terminal 100 hand-free call functions.
Wherein, described communication terminal 100 comprises portable terminal basic module 110, communication terminal receiver 130, frequency modulation transmitter module 140, control switch 120 and ON-OFF control circuit 150; Described portable terminal basic module 110 is the core of communication terminal 100, is used for producing and sending described voice signal; One described control switch 120 is set on described voice signal outlet line, a signal input part a of this control switch 120 is connected with described portable terminal basic module 110, another signal input part b is connected with the signal output part of described ON-OFF control circuit 150, and the signal input part of this ON-OFF control circuit 150 also is connected with described portable terminal basic module 110.
Described control switch 120 is provided with two voice signal outputs, and one of them voice signal output c end is connected with described communication terminal receiver 130, and another voice signal output d is connected with described frequency modulation transmitter module 140.This control switch 120 adopts that hilted broadswords are two to be put switch or put switches for double-pole is two, the one side of its effect can switch to described voice signal on the described communication terminal receiver 130, or on the described frequency modulation transmitter module 140, this voice signal is modulated to modulation signal and launches by described frequency modulation transmitter module 140; Also described voice signal can be switched to described communication terminal receiver 130 on the other hand, directly receive calls, and need not to use hand-free function.
Described ON-OFF control circuit 150 is arranged between described portable terminal basic module 110 and the control switch 120, and its signal input part is connected with described communication terminal basic module 110, and signal output part is connected with the signal input part b of described control switch 120.This ON-OFF control circuit 150 provides switch controlling signal to described control switch 120, be used to control described control switch 120, make described voice signal through between its two outlet lines, carrying out switched conductive behind the described control switch 120: i.e. the voice signal outlet line of " communication terminal basic module-control switch-mobile communication receiver ", or the voice signal outlet line of " communication terminal basic module-control switch-frequency modulation transmitter module ".When the user need use mobile communication terminal handfree function, the described control switch 120 of described ON-OFF control circuit 150 controls is connected the voice signal outlet line of " communication terminal basic module-control switch-frequency modulation transmitter module ", make described voice signal be modulated to modulation signal and launch, thereby realize the hand-free function of communication terminal through described frequency modulation transmitter module 140.
Wherein, described FM receiver 200 comprises receiver, tuning demodulation module 220, audio playing module 230 and loud speaker 240; Wherein, the described receiver in the present embodiment is a built-in aerial 210, is used to receive the modulation signal that described frequency modulation transmitter module 140 is launched, and this modulation signal is transported on the connected described tuning demodulation module 220; By this tuning demodulation module 220 modulation signal that described built-in aerial 210 receives is demodulated into voice signal, and this voice signal is transported on the audio playing module 230 that is connected with described tuning demodulation module 220 and loud speaker 240, the voice signal that demodulation is come out by this audio playing module 230 is converted into audio signal, and by described loud speaker 240 broadcasts, thereby realize communication terminal hand-free call function.
Communication terminal of the present invention is realized the hands-free operation principles that receives calls:
One described frequency modulation transmitter module 140 is set in described communication terminal 100, this frequency modulation transmitter module 140 is connected in parallel on the described voice signal outlet line with described communication terminal basic module 110, and a control switch 120 is set on described voice signal outlet line, switch on the described communication terminal basic module 110 described voice signal or frequency modulation transmitter module 140 by this control switch 120; And the switch controlling signal of controlling described control switch 120 is to be provided by an ON-OFF control circuit 150, and this ON-OFF control circuit 150 is connected with described communication terminal basic module 110 and control switch respectively.When the user need not to use hands-free obedient function, control switch 120 was cut into voice signal on the described communication terminal receiver 130 that described communication terminal 100 carries, and the same with normal described communication terminal 100 answered use; Under some occasion, when the user need use hands-free receiving calls during function, control switch 120 is cut into voice signal on the described frequency modulation transmitter module 140, by this frequency modulation transmitter module 140 described voice signal is modulated to modulation signal, and launch by the radiating circuit that is arranged on frequency modulation transmitter module 140, utilize described FM receiver 200 to receive the modulation signal that described frequency modulation transmitter module 140 emits again, and the demodulator circuit that carries through FM receiver 200, playing circuit and loud speaker promptly can play back voice signal, thereby realize communication terminal 100 hand-free call functions.
In sum, the present invention has the following advantages:
1, utilize the frequency modulation transmitter module that voice signal is modulated to modulation signal, and launch this modulation signal, and utilize a tuning modulation broadcast receiver to receive described modulation signal again and be demodulated into described audio signal, use loudspeaker plays, thereby reach the effect of hand-free call, can adapt to and various occasions;
2, the present invention uses FM receiver reception, the described voice signal of the described frequency modulation transmitter module of demodulation launch after modulation, and pass through loudspeaker plays, need not to use earphone just can reach the hand-free call effect, solved the uncomfortable sensation of using earphone to bring;
3, the present invention adopts FM receiver and at described communication terminal described frequency modulation transmitter module is set, and the realization receiver separates with the communication terminal basic module, need not to raise Headphone volume and also can reach louder volume effect preferably.
In a word, the present invention is not limited to above-mentioned execution mode, anyly is familiar with this operator, without departing from the spirit and scope of the present invention, all should drop within protection scope of the present invention.
Claims (10)
1, a kind of method that realizes mobile communication terminal handfree function, its step is as follows:
A, a frequency modulation transmitter module is set on communication terminal, is used for voice signal is modulated to modulation signal, and launches this modulation signal;
B, a control switch is set on the outlet line of described voice signal, is used to control the switching of described voice signal between communication terminal receiver and described frequency modulation transmitter module;
C, between communication terminal basic module and control switch, be provided with an ON-OFF control circuit, provide switch controlling signal, be used to control described control switch to described control switch;
D, start described control switch, described voice signal is switched to the jargon tone signal modulation of going forward side by side on the described frequency modulation transmitter module, and the modulation signal after will modulating is launched;
E, startup tuning modulation receiver receive the described modulation signal that described step D sends, and this modulation signal are demodulated into described voice signal, and pass through loudspeaker plays.
2, method according to claim 1 is characterized in that, in described steps A, described frequency modulation transmitter module comprises a modulation circuit, is used for described voice signal is modulated to modulation signal; And a radiating circuit, be used to launch described modulation signal.
3, method according to claim 2 is characterized in that, described modulation circuit is provided with the adjustable modulator of a modulating frequency, is used to adapt to different occasion needs.
4, method according to claim 2 is characterized in that, described radiating circuit comprises an amplifier, is used to realize the adjustment of transmitting power.
5, method according to claim 1 is characterized in that, in described step B, described control switch is the two switches of putting of hilted broadsword.
6, method according to claim 1 is characterized in that, in described step B, described control switch is the two switches of putting of double-pole.
7, method according to claim 1 is characterized in that, in described step C, described switch controlling signal is produced by hardware circuit control.
8, method according to claim 1 is characterized in that, in described step C, described switch controlling signal is produced by software module control.
9, a kind of device of realizing mobile communication terminal handfree function comprises a communication terminal; It is characterized in that described communication terminal comprises:
One portable terminal basic module is used to send described voice signal;
One communication terminal receiver is used to receive calls;
One frequency modulation transmitter module is connected in parallel on the described voice signal output circuit with described communication terminal receiver, is used for voice signal is modulated to modulation signal, and launches this modulation signal; One control switch, be arranged on the outlet line of described voice signal, this control switch is provided with two signal output parts, be connected with described communication terminal receiver and frequency modulation transmitter module respectively, be used for the switching of described voice signal between communication terminal receiver and described frequency modulation transmitter module; And
One ON-OFF control circuit is arranged between described portable terminal basic module and the control switch, provides switch controlling signal to described control switch, is used to control described control switch;
Described device also comprises a tuning modulation receiver, is used to receive and separate the described voice signal of launching after the described frequency modulation transmitter module modulation of menstruation regulating, and passes through loudspeaker plays.
10, device according to claim 9 is characterized in that, described tuning modulation receiver comprises a receiver, is used to receive the described modulation signal that communication terminal is launched; One tuning demodulation module is connected with described receiver, is used for that described receiver is connect the described modulation signal that transports and is demodulated into voice signal; And an audio playing module, be connected with described tuning, demodulation module and loud speaker, be used for described voice signal is converted into audio signal, and by described loudspeaker plays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100750224A CN101072405A (en) | 2007-06-12 | 2007-06-12 | Device and method for realizing mobile communication terminal handfree function |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100750224A CN101072405A (en) | 2007-06-12 | 2007-06-12 | Device and method for realizing mobile communication terminal handfree function |
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| CN101072405A true CN101072405A (en) | 2007-11-14 |
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| CNA2007100750224A Pending CN101072405A (en) | 2007-06-12 | 2007-06-12 | Device and method for realizing mobile communication terminal handfree function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8340570B2 (en) | 2010-05-13 | 2012-12-25 | International Business Machines Corporation | Using radio frequency tuning to control a portable audio device |
| CN107666538A (en) * | 2017-09-30 | 2018-02-06 | 努比亚技术有限公司 | A kind of connection method and terminal |
-
2007
- 2007-06-12 CN CNA2007100750224A patent/CN101072405A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8340570B2 (en) | 2010-05-13 | 2012-12-25 | International Business Machines Corporation | Using radio frequency tuning to control a portable audio device |
| CN107666538A (en) * | 2017-09-30 | 2018-02-06 | 努比亚技术有限公司 | A kind of connection method and terminal |
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