CN104282137A - Infrared remote control method and mobile terminal - Google Patents
Infrared remote control method and mobile terminal Download PDFInfo
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- CN104282137A CN104282137A CN201410529386.5A CN201410529386A CN104282137A CN 104282137 A CN104282137 A CN 104282137A CN 201410529386 A CN201410529386 A CN 201410529386A CN 104282137 A CN104282137 A CN 104282137A
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Abstract
The invention discloses an infrared remote control method and a mobile terminal. The infrared remote control method comprises the following steps: acquiring electric level information of a corresponding infrared remote control signal according to a control instruction of a user; generating a voice frequency source file and a data bit 0 according to the electric level information; and integrating the voice frequency source file and the data bit 0 into a voice frequency signal according to the electric level information, and simulating the infrared remote control signal according to the voice frequency signal for carrying out infrared remote control outside. By virtue of the infrared remote control method, as the wave form of the infrared remote control signal can be simulated and integrated by a software manner, hardware is free of a special infrared remote control transmitting chip, and with original voice frequency encoding hardware in the mobile terminal, a simple transmitting circuit is just expanded at the rear end of output of voice frequency, and then the infrared remote control signal can be transmitted, so that the hardware cost is greatly reduced, and the infrared remote control function is finally achieved on the mobile terminal at low cost.
Description
Technical field
The present invention relates to communication technical field, especially relate to a kind of infrared remote control method and mobile terminal.
Background technology
Infrared Ray Remote Control Technology, as a kind of the most frequently used electric control method, has been widely used on various types of household electrical appliance.Along with the universal of smart mobile phone and the continuous expansion of range of application, there is a series of mobile phone with function of infrared remote control, coordinated corresponding application program just can realize the function of domestic electrical equipment remote controller, thus traditional domestic electrical equipment remote controller can be replaced.
But the mobile phone of existing band function of infrared remote control, is all the Infrared Remote-Control Sending chip that extra assembling is special on mobile phone, generates infrared signal, then sent by infrared transmitter by Infrared Remote-Control Sending chip coding.And special Infrared Remote-Control Sending chip is costly, add the hardware cost of mobile phone, therefore existing mobile phone infrared remote function to realize cost higher.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of infrared remote control method and mobile terminal, is intended to realize function of infrared remote control on mobile terminals with lower cost.
To achieve these objectives, the present invention proposes a kind of infrared remote control method, and infrared remote control method comprises step:
The level information of corresponding infrared remote-controlled signal is obtained according to the steering order of user;
Audio-source file and data bit 0 is generated according to described level information;
According to described level information, described audio-source file and data bit 0 are synthesized sound signal, and described sound signal is modeled as infrared remote-controlled signal externally carries out infrared remote control.
Preferably, described level information comprises high level information and low level information, describedly generates audio-source file according to described level information and data bit 0 comprises:
According to described high level information, audio frequency parameter generation audio-source file is selected to simulate the high level of described infrared remote-controlled signal; According to described low level information, generate the data bit 0 of certain byte number to simulate the low level of described infrared remote-controlled signal.
Preferably, described audio frequency parameter comprises any one or the combination in any in sampling rate, channel number, sampling precision, fundamental frequency, waveform, volume.
Preferably, described level information comprises the combined information of low and high level, describedly according to described level information, described audio-source file and data bit 0 is synthesized sound signal and comprises:
According to the combined information of described low and high level, described audio-source file and data bit 0 are synthesized as the high level of described infrared remote-controlled signal and low level, form sound signal.
Preferably, described audio-source file is the audio-source file of regular length.
The present invention proposes a kind of mobile terminal simultaneously, comprises acquisition module, generation module and transmitter module, wherein:
Acquisition module, for obtaining the level information of corresponding infrared remote-controlled signal according to the steering order of user;
Generation module, for generating audio-source file and data bit 0 according to described level information, and synthesizes sound signal by described audio-source file and data bit 0;
Transmitter module, for launching described sound signal, externally carries out infrared remote control so that described sound signal is modeled as infrared remote-controlled signal.
Preferably, described level information comprises high level information and low level information, and described generation module is used for: according to described high level information, selects audio frequency parameter generation audio-source file to simulate the high level of described infrared remote-controlled signal; According to described low level information, generate the data bit 0 of certain byte number to simulate the low level of described infrared remote-controlled signal.
Preferably, described level information comprises the combined information of low and high level, described generation module is used for: according to the combined information of described low and high level, described audio-source file and data bit 0 is synthesized as the high level of described infrared remote-controlled signal and low level, forms sound signal.
A kind of infrared remote control method provided by the present invention, by obtaining the level information of armed infrared remote-controlled signal, audio-source file and data bit 0 is generated according to level information, and synthesize sound signal, last externally launch this sound signal, thus achieve and utilize sound signal to simulate infrared remote-controlled signal externally to carry out infrared remote control.Because the present embodiment can by the waveform of the mode analog synthesis infrared remote-controlled signal of software, hardware does not need special Infrared Remote-Control Sending chip, but utilize original audio coding hardware in mobile terminal, only need to export rear end at audio frequency and expand the transmission that simple radiating circuit can realize infrared remote-controlled signal, significantly reduce hardware cost.Finally achieve and realize function of infrared remote control on mobile terminals with lower cost.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of infrared remote control method one embodiment of the present invention;
Fig. 2 is the waveform schematic diagram of an infrared remote-controlled signal in the embodiment of the present invention;
Fig. 3 is the module diagram of mobile terminal one embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See Fig. 1, propose infrared remote control method one embodiment of the present invention, described infrared remote control method comprises the following steps:
Step S1: the level information obtaining corresponding infrared remote-controlled signal according to the steering order of user
Described steering order comprises start, shutdown, volume plus-minus, channel plus-minus, brightness plus-minus, temperature plus-minus etc., and user can send steering order by touch control operation or button operation.The corresponding infrared remote-controlled signal of each steering order, each infrared remote-controlled signal all has specific level information.
The infrared remote-controlled signal of a standard as shown in Figure 2, is generally made up of preamble code, user code, numeric data code, data radix-minus-one complement etc.As seen from the figure, the basic composition unit of a complete infrared remote-controlled signal waveform is high level and low level, and namely infrared remote-controlled signal is combined by the high level of certain length and low level.Therefore, the level information of infrared remote-controlled signal comprises high level information, low level information and low and high level combined information; Wherein high level information comprises the length etc. of high level quantity, each high level, and low level information comprises low level quantity, each low level length etc., and low and high level combined information comprises high level and low level permutation and combination form.
Step S2: generate audio-source file and data bit 0 according to level information
In order to simulate infrared remote-controlled signal, the present invention utilizes audio-source file to simulate the high level part of infrared remote-controlled signal, is simulated the low level part of infrared remote-controlled signal by padding data position 0.
Concrete, for high level part, can, according to the quantity, length etc. of high level information as high level, select suitable audio frequency parameter to generate audio-source file to simulate the high level of infrared remote-controlled signal.This audio frequency parameter comprises any one or combination in any in sampling rate, channel number, sampling precision, fundamental frequency, waveform, volume, and this audio-source file is preferably the audio-source file of regular length, can effectively increase coding rate and stability.In view of the diversity of infrared protocol standard, the present embodiment preferably uses the audio-source file of 0.28ms and 0.56ms two kinds of regular lengths, by superposing the high level part substantially can simulating most infrared remote-controlled signal.Such as, need the audio-source file of 0.56ms length, can by the audio software (as CoolEdit) of specialty, select following audio frequency parameter: sampling rate 44100, channel number are that stereo, sampling precision 16, fundamental frequency 9500Hz, waveform are sine wave, volume 0dB, continue duration 0.56ms, generate the audio-source file of needs.
For low level part, according to low level information as low level quantity, length etc., the data bit 0 of certain byte number can be generated to simulate the low level of infrared remote-controlled signal.Wherein, the byte number generating data bit 0 can be calculated by following parameter: sampling rate * channel number * low level duration * (sampling precision/8).
Step S3: audio-source file and data bit 0 are synthesized sound signal according to level information
Concrete, after simulation generates low and high level waveform respectively, again according to the combined information of low and high level, as high level and low levelly to put in order, array configuration etc., using the high level of audio-source file as infrared remote-controlled signal, the low level of data bit 0 as infrared remote-controlled signal is synthesized, forms sound signal.The waveform of this sound signal is identical with the waveform of infrared remote-controlled signal, and this sound signal is the infrared remote-controlled signal of simulation.
Step S4: outwards audio signals, externally carries out infrared remote control sound signal to be modeled as infrared remote-controlled signal
Outwards can be launched the sound signal of synthesis by voice-grade channel or radiating circuit, be modeled as infrared remote-controlled signal by this sound signal and externally carry out infrared remote control.
The infrared remote control method of the present embodiment, it is a kind of method being simulated infrared remote-controlled signal by sound signal, in specific implementation, can by the waveform of the mode analog synthesis infrared remote-controlled signal of software, hardware does not need special Infrared Remote-Control Sending chip, original audio coding hardware in mobile terminal can be utilized, only need to export rear end at audio frequency and expand the transmission that simple radiating circuit can realize infrared remote-controlled signal, significantly reduce hardware cost.Finally achieve and realize function of infrared remote control on mobile terminals with lower cost.
See Fig. 3, propose mobile terminal one embodiment of the present invention, described mobile terminal comprises acquisition module, generation module and transmitter module.
Acquisition module: for obtaining the level information of corresponding infrared remote-controlled signal according to the steering order of user, and this level information is sent to acquisition module.
Described steering order comprises start, shutdown, volume plus-minus, channel plus-minus, brightness plus-minus, temperature plus-minus etc., and user can send steering order by touch control operation or button operation.The corresponding infrared remote-controlled signal of each steering order, each infrared remote-controlled signal all has specific level information.The steering order that acquisition module sends according to user, the infrared remote-controlled signal that inquiry is corresponding, and obtain the level information of this infrared remote-controlled signal.
As seen from Figure 2, the basic composition unit of a complete infrared remote-controlled signal waveform is high level and low level, and namely infrared remote-controlled signal is combined by the high level of certain length and low level.Therefore, the level information of infrared remote-controlled signal comprises high level information, low level information and low and high level combined information; Wherein high level information comprises the length etc. of high level quantity, each high level, and low level information comprises low level quantity, each low level length etc., and low and high level combined information comprises high level and low level permutation and combination form.
Generation module: for generating audio-source file and data bit 0 according to level information, and audio-source file and data bit 0 are synthesized sound signal, this sound signal is sent to transmitter module.
In the present embodiment, generation module utilizes audio-source file to simulate the high level part of infrared remote-controlled signal, is simulated the low level part of infrared remote-controlled signal by padding data position 0.
Concrete, for high level part, generation module can, according to the quantity, length etc. of high level information as high level, select suitable audio frequency parameter to generate audio-source file to simulate the high level of infrared remote-controlled signal.This audio frequency parameter comprises any one or combination in any in sampling rate, channel number, sampling precision, fundamental frequency, waveform, volume, and this audio-source file is preferably the audio-source file of regular length, can effectively increase coding rate and stability.In view of the diversity of infrared protocol standard, the present embodiment preferably uses the audio-source file of 0.28ms and 0.56ms two kinds of regular lengths, by superposing the high level part substantially can simulating most infrared remote-controlled signal.Such as, need the audio-source file generating 0.56ms length, generation module can by the audio software (as CoolEdit) of specialty, select following audio frequency parameter: sampling rate 44100, channel number are that stereo, sampling precision 16, fundamental frequency 9500Hz, waveform are sine wave, volume 0dB, continue duration 0.56ms etc., generate the audio-source file of needs.
For low level part, generation module according to low level information as low level quantity, length etc., can generate the data bit 0 of certain byte number to simulate the low level of infrared remote-controlled signal.Wherein, the byte number generating data bit 0 can be calculated by following parameter: sampling rate * channel number * low level duration * (sampling precision/8).
After simulation generates low and high level waveform respectively, generation module is again according to the combined information of low and high level, as high level and low levelly to put in order, array configuration etc., using the high level of audio-source file as infrared remote-controlled signal, the low level of data bit 0 as infrared remote-controlled signal is synthesized, forms sound signal.The waveform of this sound signal is identical with the waveform of infrared remote-controlled signal, and this sound signal is the infrared remote-controlled signal of simulation.
Transmitter module: for launching the sound signal of synthesis, externally carries out infrared remote control so that this sound signal is modeled as infrared remote-controlled signal.
Transmitter module outwards can launch the sound signal of synthesis by voice-grade channel or radiating circuit, be modeled as infrared remote-controlled signal externally carry out infrared remote control by this sound signal.
Thus, mobile terminal of the present invention, the level information of armed infrared remote-controlled signal is obtained by acquisition module, generation module generates audio-source file and data bit 0 according to level information, and synthesize sound signal, finally externally launch this sound signal by transmitter module, thus achieve utilize sound signal simulate infrared remote-controlled signal externally carry out infrared remote control.Because the present embodiment can by the waveform of the mode analog synthesis infrared remote-controlled signal of software, hardware does not need special Infrared Remote-Control Sending chip, original audio coding hardware in mobile terminal can be utilized, only need to export rear end at audio frequency and expand the transmission that simple radiating circuit can realize infrared remote-controlled signal, significantly reduce hardware cost.Finally achieve and realize function of infrared remote control on mobile terminals with lower cost.
It should be noted that: the mobile terminal that above-described embodiment provides is when carrying out infrared remote control, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, inner structure by mobile terminal is divided into different functional modules, to complete all or part of function described above.In addition, the mobile terminal that above-described embodiment provides and infrared remote control method embodiment belong to same design, and its specific implementation process refers to embodiment of the method, and the technical characteristic in embodiment of the method is all corresponding applicable in mobile terminal embodiment, repeats no more here.
One of ordinary skill in the art will appreciate that, realize the hardware that all or part of step in above-described embodiment method can control to be correlated with by program to complete, described program can be stored in a computer read/write memory medium, and described storage medium can be ROM/RAM, disk, CD etc.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. an infrared remote control method, is characterized in that, comprises step:
The level information of corresponding infrared remote-controlled signal is obtained according to the steering order of user;
Audio-source file and data bit 0 is generated according to described level information;
According to described level information, described audio-source file and data bit 0 are synthesized sound signal, and described sound signal is modeled as infrared remote-controlled signal externally carries out infrared remote control.
2. infrared remote control method according to claim 1, is characterized in that, described level information comprises high level information and low level information, describedly generates audio-source file according to described level information and data bit 0 comprises:
According to described high level information, audio frequency parameter generation audio-source file is selected to simulate the high level of described infrared remote-controlled signal; According to described low level information, generate the data bit 0 of certain byte number to simulate the low level of described infrared remote-controlled signal.
3. infrared remote control method according to claim 2, is characterized in that, described audio frequency parameter comprises any one or combination in any in sampling rate, channel number, sampling precision, fundamental frequency, waveform, volume.
4. infrared remote control method according to claim 1, is characterized in that, described level information comprises the combined information of low and high level, describedly according to described level information, described audio-source file and data bit 0 is synthesized sound signal and comprises:
According to the combined information of described low and high level, described audio-source file and data bit 0 are synthesized as the high level of described infrared remote-controlled signal and low level, form sound signal.
5. the infrared remote control method according to any one of claim 1-4, is characterized in that, described audio-source file is the audio-source file of regular length.
6. a mobile terminal, is characterized in that, comprises acquisition module, generation module and transmitter module, wherein:
Acquisition module, for obtaining the level information of corresponding infrared remote-controlled signal according to the steering order of user;
Generation module, for generating audio-source file and data bit 0 according to described level information, and synthesizes sound signal by described audio-source file and data bit 0;
Transmitter module, for launching described sound signal, externally carries out infrared remote control so that described sound signal is modeled as infrared remote-controlled signal.
7. mobile terminal according to claim 6, it is characterized in that, described level information comprises high level information and low level information, and described generation module is used for: according to described high level information, selects audio frequency parameter generation audio-source file to simulate the high level of described infrared remote-controlled signal; According to described low level information, generate the data bit 0 of certain byte number to simulate the low level of described infrared remote-controlled signal.
8. mobile terminal according to claim 7, is characterized in that, described audio frequency parameter comprises any one or combination in any in sampling rate, channel number, sampling precision, fundamental frequency, waveform, volume.
9. mobile terminal according to claim 6, it is characterized in that, described level information comprises the combined information of low and high level, described generation module is used for: according to the combined information of described low and high level, described audio-source file and data bit 0 are synthesized as the high level of described infrared remote-controlled signal and low level, forms sound signal.
10. the mobile terminal according to any one of claim 6-9, is characterized in that, described audio-source file is the audio-source file of regular length.
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