CN110855823B - Call terminal, receiving mode selection method and computer equipment - Google Patents
Call terminal, receiving mode selection method and computer equipment Download PDFInfo
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- CN110855823B CN110855823B CN201911014019.0A CN201911014019A CN110855823B CN 110855823 B CN110855823 B CN 110855823B CN 201911014019 A CN201911014019 A CN 201911014019A CN 110855823 B CN110855823 B CN 110855823B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
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Abstract
The application discloses a call terminal, a receiving mode selection method and computer equipment, which comprise a baseband unit, an audio processing unit, an ultrasonic modulation unit, an ultrasonic amplification unit and a directional receiver, wherein the output end of the baseband unit is respectively connected with the input end of the audio processing unit and the input end of the ultrasonic modulation unit, the output end of the audio processing unit is connected with the input end of the ultrasonic modulation unit, the output end of the ultrasonic modulation unit is connected with the input end of the ultrasonic amplification unit, and the output end of the ultrasonic amplification unit is connected with the directional receiver. The call terminal provides multiple call receiving modes, a user can directionally answer at a specified position at a certain distance from the mobile phone, the head of the user does not need to be attached to the mobile phone, and radiation influence is reduced.
Description
Technical Field
The application relates to the technical field of mobile communication, in particular to a call terminal, a receiving mode selection method and computer equipment.
Background
A receiver is generally adopted for voice output of the current mobile terminal, the frequency range of the output voice is 300-3.4 KHZ, and a mobile phone is required to be close to the ear during communication. However, when the mobile terminal such as a mobile phone is in a 2G, 3G, 4G or 5G operating mode, the radio frequency transmission power is large, and there is a radiation problem when the mobile terminal is close to a human body, so people feel headache and discomfort after talking with the mobile phone for a long time, and the mobile phone is too close to the head, which also causes antenna signal attenuation. If the mobile phone is not close to the head of a human body during communication, communication needs to be carried out in a hands-free mode, and the volume of the loudspeaker is large, so that communication information can be leaked except for interference of other people.
Disclosure of Invention
The application aims to provide a call terminal, a receiving mode selection method and computer equipment, and aims to solve the problem that in the prior art, when a user is in a call, the head of the user needs to be attached to a mobile phone in order to be free from interference, so that the user is radiated by the mobile phone.
The application provides a conversation terminal, includes: the system comprises a baseband unit, an audio processing unit, an ultrasonic modulation unit, an ultrasonic amplification unit and a directional receiver;
the output end of the baseband unit is respectively connected with the input end of the audio processing unit and the input end of the ultrasonic modulation unit, the output end of the audio processing unit is connected with the input end of the ultrasonic modulation unit, the output end of the ultrasonic modulation unit is connected with the input end of the ultrasonic amplification unit, and the output end of the ultrasonic amplification unit is connected with the directional telephone receiver;
the audio signal output by the baseband unit is input to the audio processing unit, a preprocessed audio signal is obtained after the audio signal is processed by the audio processing unit, the preprocessed audio signal is input to the ultrasonic modulation unit, an ultrasonic carrier signal output by the baseband unit is also input to the ultrasonic modulation unit, the ultrasonic modulation unit modulates the preprocessed audio signal onto the ultrasonic carrier signal to obtain a modulated audio ultrasonic signal, the modulated audio ultrasonic signal is input to the ultrasonic amplification unit for signal amplification, finally, the amplified modulated audio ultrasonic signal is input to the directional receiver, and the directional receiver directionally emits the amplified modulated audio ultrasonic signal into the air and automatically demodulates the modulated audio ultrasonic signal into an audible sound signal at a designated position in the air.
Furthermore, the call terminal further comprises a switching unit and a conventional telephone receiver, the output end of the audio processing unit is connected with the input end of the ultrasonic modulation unit through the switching unit, and the output end of the switching unit is switched between the input end of the conventional telephone receiver and the input end of the ultrasonic modulation unit.
Furthermore, the communication terminal comprises a shell, the directional receiver comprises an ultrasonic transducer assembly, a sound guide tube and a sound transmission pore channel, the sound transmission pore channel is arranged on the shell, and the ultrasonic transducer assembly is connected with the sound transmission pore channel through the sound guide tube.
Further, the sound-transmitting tunnel includes one of an earphone jack and a USB jack.
Furthermore, the call terminal further comprises a power supply unit, wherein the power supply unit is used for supplying electric energy to the baseband unit, the audio processing unit, the ultrasonic modulation unit and the ultrasonic amplification unit; the power supply unit further comprises a boosting subunit, and the boosting subunit is connected with the ultrasonic amplification unit and used for providing electric energy for the ultrasonic amplification unit.
The application also provides a receiving mode selection method, which uses the communication terminal, and the receiving mode selection method comprises the following steps:
acquiring current receiving mode information, and extracting receiver type information contained in the current receiving mode information;
when the receiver type information contained in the current receiver mode information is a directional receiver, connecting the output end of the switching unit with the input end of the ultrasonic modulation unit;
and when the receiver type information contained in the current receiving mode information is a conventional receiver, connecting the output end of the switching unit with the input end of the conventional receiver.
Further, the call terminal includes a proximity sensor, and before the step of acquiring the current receiving mode information and extracting the receiver type information included in the current receiving mode information, the method includes:
acquiring the distance between a user and the call terminal through the proximity sensor, and judging a threshold range in which the distance is located, wherein the threshold range comprises a first distance threshold range and a second distance threshold range, and the minimum value of the second distance threshold range is greater than the maximum value of the first distance threshold range;
when the distance is within the first distance threshold range, setting the receiver type contained in the current receiving mode information as the conventional receiver;
and when the distance is within the range of the second distance threshold, setting the receiver type contained in the current receiving mode information as the directional receiver.
Further, when the receiver type information included in the current receiving mode information is a conventional receiver, the step of connecting the output end of the switching unit with the input end of the conventional receiver includes:
detecting whether a call program runs on a foreground interface of the call terminal or not in the running process of the call program;
and if not, setting the receiver type information contained in the current receiving mode information as the directional receiver.
Further, taking a time when the output end of the switching unit is connected to the input end of the conventional receiver as a first time, and when the receiver type information included in the current receiving mode information is the conventional receiver, after the step of connecting the output end of the switching unit to the input end of the conventional receiver, the method includes:
monitoring whether the duration between the current moment and the first moment is greater than a preset duration or not in the running process of a call program;
and if so, setting the receiver type information contained in the current receiving mode information as the directional receiver.
The application also provides a computer device, which comprises a processor, a memory and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the telephone receiving mode selection method when executing the computer program.
The beneficial effect of this application:
according to the call terminal, the receiving mode selection method and the computer device, the output end of a baseband unit is respectively connected with the input end of an audio processing unit and the input end of an ultrasonic modulation unit, the output end of the audio processing unit is connected with the input end of the ultrasonic modulation unit, the output end of the ultrasonic modulation unit is connected with the input end of an ultrasonic amplification unit, and the output end of the ultrasonic amplification unit is connected with a directional receiver; the audio signal output by the baseband unit is processed by the audio processing unit to obtain a preprocessed audio signal, the preprocessed audio signal is input to the ultrasonic modulation unit, meanwhile, an ultrasonic carrier signal output by the baseband unit is also input to the ultrasonic modulation unit, the ultrasonic modulation unit modulates the preprocessed audio signal onto the ultrasonic carrier signal to obtain a modulated audio ultrasonic signal, the modulated audio ultrasonic signal is amplified by the ultrasonic amplification unit, and finally, the amplified modulated audio ultrasonic signal is directionally emitted into the air by the directional receiver and is self-demodulated into an audible sound signal at a designated position in the air; the position where self-demodulation occurs is a certain distance away from the mobile phone, so that a user can directionally answer at a specified position which is a certain distance away from the mobile phone, the head of the user does not need to be attached to the mobile phone, and the radiation influence is reduced; meanwhile, only the user at the designated position can hear the sound of the other party, and other people at other positions can not hear the sound of the other party, so that the defect that the sound of the other party is influenced or the call information is leaked due to the fact that the loudspeaker is used for being externally placed is overcome.
Drawings
Fig. 1 is a schematic block circuit diagram of a call terminal according to an embodiment of the present application;
FIG. 2 is a schematic block circuit diagram of a telephony terminal according to yet another embodiment of the present application;
fig. 3 is a schematic structural diagram of a call terminal according to an embodiment of the present application;
fig. 4 is a flowchart illustrating a method for selecting a reception mode according to an embodiment of the present application;
FIG. 5 is a block diagram illustrating the structure of one embodiment of a computer device of the present application.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
Referring to fig. 1, a call terminal provided in the present application includes: the system comprises a baseband unit, an audio processing unit, an ultrasonic modulation unit, an ultrasonic amplification unit and a directional receiver;
the output end of the baseband unit is respectively connected with the input end of the audio processing unit and the input end of the ultrasonic modulation unit, the output end of the audio processing unit is connected with the input end of the ultrasonic modulation unit, the output end of the ultrasonic modulation unit is connected with the input end of the ultrasonic amplification unit, and the output end of the ultrasonic amplification unit is connected with the directional telephone receiver;
the audio signal output by the baseband unit is input to the audio processing unit, a preprocessed audio signal is obtained after the audio signal is processed by the audio processing unit, the preprocessed audio signal is input to the ultrasonic modulation unit, an ultrasonic carrier signal output by the baseband unit is also input to the ultrasonic modulation unit, the ultrasonic modulation unit modulates the preprocessed audio signal onto the ultrasonic carrier signal to obtain a modulated audio ultrasonic signal, the modulated audio ultrasonic signal is input to the ultrasonic amplification unit for signal amplification, finally, the amplified modulated audio ultrasonic signal is input to the directional receiver, and the directional receiver directionally emits the amplified modulated audio ultrasonic signal into the air and automatically demodulates the modulated audio ultrasonic signal into an audible sound signal at a designated position in the air.
In this embodiment, the communication terminal includes a tablet, a mobile phone, and other smart terminals, and the following description will be given by taking the mobile phone as an example. The baseband unit is arranged in the mobile phone.
The directional receiver usually includes an ultrasonic transducer assembly, which may be a single ultrasonic transducer or an array module composed of a plurality of ultrasonic transducers. The ultrasonic transducer is a device capable of converting high-frequency electric energy into mechanical energy, in the embodiment, a preprocessed audio signal is modulated onto an ultrasonic carrier signal, the signal obtained by amplification is a high-frequency electric signal, the high-frequency electric signal causes the change of an electric field or a magnetic field of an electric energy storage element in the ultrasonic transducer, the change generates a driving force on a mechanical vibration system of the ultrasonic transducer to enable the mechanical vibration system to enter a vibration state, so that a medium which is in contact with the mechanical vibration system of the ultrasonic transducer is driven to vibrate, ultrasonic waves are radiated into the medium, and the ultrasonic waves are directionally transmitted out based on the fact that the ultrasonic waves are directionally transmitted in the air. Due to the nonlinear acoustic effect of air, the ultrasonic waves are self-demodulated in the process of directional propagation in the air, and are self-demodulated into audible sound waves with frequencies falling in an audible interval at a specified position at a certain distance from the mobile phone. Namely, the above-mentioned designated position is a position which is in the direction of the directional receiver directionally transmitting the modulated audio ultrasonic signal and has a certain distance from the call terminal. At the designated location, the ultrasonic waves self-demodulate into audible sound waves. The user can actively adjust the direction and the distance between the user and the call terminal, so that the user is positioned at the specified position, and the sound of the opposite party of the call can be heard; for other people who are not at the specified position, the audible sound wave cannot be heard, namely, the sound of the other party in the call cannot be heard, so that the information safety in the call process is ensured. When a directional receiver is used to output a sound signal, a user can perform directional listening at a designated position at a certain distance from the mobile phone.
According to the call terminal, when a call is made, a user can answer the call directionally at a position away from the mobile phone by a certain distance, the head of the user does not need to be attached to the mobile phone tightly, and radiation influence is reduced; meanwhile, only the user at the designated position can hear the sound of the other party, and other people at other positions can not hear the sound of the other party, so that the defect that the sound of the other party is influenced or the call information is leaked due to the fact that the loudspeaker is used for being externally placed is overcome.
Referring to fig. 2, in an embodiment, the above-mentioned call terminal further includes a switching unit and a conventional receiver, an output end of the audio processing unit is connected to an input end of the ultrasonic modulation unit through the switching unit, and an output end of the switching unit switches between the input end of the conventional receiver and the input end of the ultrasonic modulation unit.
The baseband unit outputs digital audio signals, and the digital audio signals are subjected to digital-to-analog conversion and signal amplification through the audio processing unit to obtain preprocessed audio signals. And when receiving the switching instruction, the switching unit switches the output end between the input end of the conventional receiver and the input end of the ultrasonic modulation unit. When the output end of the switching unit is connected with the input end of the conventional telephone receiver, the preprocessed audio signal is input to the conventional telephone receiver through the switching unit, the preprocessed audio signal is converted into an audible sound signal through the conventional telephone receiver, and a user can hear the converted sound through the conventional telephone receiver.
Specifically, the conventional telephone receiver is typically a conventional telephone receiver such as a handset in a mobile phone. When the output end of the switching unit is connected to the input end of the conventional telephone receiver, which is the normal telephone answering method of the mobile phone, the head of the user needs to be close to the mobile phone to hear the voice of the other party.
When the call terminal of the embodiment is used, when the mobile phone makes a call or receives an incoming call, a selection icon (for example, the content of the selection icon may be a conventional telephone receiver and a directional telephone receiver) can be displayed on the display screen, so that the user can select a telephone receiving mode. The user can also set a default telephone receiving mode when dialing or receiving the incoming call according to the using habit, and then the user can carry out the call in the default telephone receiving mode when dialing or receiving the incoming call, and can also carry out the switching of the telephone receiving mode according to the requirement in the call process. In another embodiment, a hands-free mode may also be added to the selection icon.
In the call terminal of the embodiment, when in call, the call receiving mode can be switched through the switching unit, and a user can switch a connection object of the output end through the switching unit as required, so that a conventional telephone receiver or a directional telephone receiver is selected for call; when a conventional telephone receiver is selected, the head of a user clings to the mobile phone to carry out communication; when the directional receiver is selected, a user can directionally answer at a position away from the mobile phone by a certain distance, the head of the user is not required to be attached to the mobile phone, and radiation influence is reduced.
Referring to fig. 3, in one embodiment, the call terminal includes a housing 10, the directional receiver includes an ultrasonic transducer assembly, a sound guide tube 30 and a sound transmission duct 40, the sound transmission duct 40 is opened on the housing 10, and the ultrasonic transducer assembly is connected to the sound transmission duct 40 through the sound guide tube 30.
In this embodiment, the ultrasound transducer assembly may be a single ultrasound transducer; the ultrasonic transducer array module can also be an ultrasonic transducer array module, wherein the ultrasonic transducer array module comprises a plurality of ultrasonic transducers which are arranged in a certain form, the common arrangement shapes can be divided into a linear array, a planar array, a cylindrical array, a spherical array, a concave array and the like, and the ultrasonic transducer array module has the advantages of improving the signal-to-noise ratio, improving the spatial resolution and the like. In fig. 3, a schematic structural diagram of the talking terminal is shown by taking a single ultrasonic transducer 20 as an example, the ultrasonic wave transmitted by the ultrasonic transducer 20 is emitted from the sound transmission duct 40 into the air through the sealed sound guide tube 30, the ultrasonic wave is directionally transmitted in the air, and finally self-demodulation is realized at a certain position in the air, so as to generate a restored sound which can be heard by human ears. The ultrasonic transducer 20 is disposed in the handset case 10 and connected to the sound transmission duct 40 through the sound guide tube 30. The sound transmission duct 40 may be a through hole specially formed in the housing 10 for transmitting sound, and the position of the through hole may be set at any position of the mobile phone housing 10 according to actual use requirements, for example, a side of the mobile phone housing 10, a rear wall of the housing 10, and the like; preferably, the through hole is opened at the bottom side of the mobile phone shell 10, so that the distance from the normal setting position of the mobile phone microphone is relatively close, and thus, when a call is made, the voice input and output are at the same side of the mobile phone, and the user experience is better.
In another embodiment, the sound transmission duct 10 may be a duct already existing in the mobile phone itself, and includes one of an earphone jack and a USB jack. In the existing mobile phone, the earphone jack is usually disposed at the bottom side of the mobile phone housing 10, and the inner tail of the earphone jack itself has a hole, so that the ultrasonic transducer 20 and the earphone jack can be directly connected by the sealed sound guiding tube 30 without additional holes. If the internal tail of the USB jack is provided with an opening, the ultrasonic transducer 20 can be directly connected with the USB jack by the sealed sound guide tube 30. If the internal end of the USB jack is not perforated, the sound guide tube 30 needs to be connected after the internal end of the USB jack is perforated.
In one embodiment, the call terminal further includes a power supply unit, where the power supply unit is configured to provide electric energy to the baseband unit, the audio processing unit, the ultrasonic modulation unit, and the ultrasonic amplification unit; the power supply unit further comprises a boosting subunit, and the boosting subunit is connected with the ultrasonic amplification unit and used for providing electric energy for the ultrasonic amplification unit. The directional receiver is directly driven by the ultrasonic amplification unit. When the terminal further comprises a switching unit and a conventional telephone receiver, the power supply unit is further used for supplying power to the switching unit and the conventional telephone receiver.
In this embodiment, the ultrasonic modulation unit modulates the audio signal onto the ultrasonic carrier signal, and the signal amplitude and the driving capability are small, and the signal is amplified by the ultrasonic amplification unit. The ultrasonic amplifying unit includes an amplifying circuit, and the specific amplifying circuit is not described herein, and is a conventional technical means grasped by those skilled in the art. The ultrasonic amplifying unit is provided with electric energy through the boosting subunit, the boosting subunit comprises a boosting circuit, and the specific boosting circuit is not described herein any more, and is a conventional technical means grasped by those skilled in the art.
In one embodiment, the call terminal further includes a proximity sensor, where the proximity sensor is configured to detect a distance between a user and the mobile phone when the call is connected, and transmit a distance signal to the controller, and the controller compares the distance between the user and the mobile phone with a preset distance threshold range to generate a control signal, and controls the switching unit to perform a corresponding preset switching operation.
In this embodiment, the proximity sensor is disposed inside the mobile phone or on the surface of the housing 10, and is used for detecting a distance between the user and the mobile phone (usually, a distance between the head and the screen of the mobile phone), and automatically switching the receiving mode according to the distance between the user and the mobile phone. For example, when the user is detected to be very close to the mobile phone and within a first distance threshold range, indicating that the face of the user is tightly attached to the mobile phone at the moment, automatically selecting a call receiving mode corresponding to the conventional telephone receiver; when the distance between the user and the mobile phone is detected to be within a second distance threshold range, the fact that the face of the user is at a certain distance from the mobile phone (but not too far away, the face of the user is within the second distance threshold range) is indicated, and a telephone receiving mode corresponding to the directional telephone receiver is automatically selected; when the fact that the distance between the user and the mobile phone is far and larger than the second distance threshold range is detected, the receiving mode corresponding to the hands-free mode can be automatically selected. Wherein the minimum value of the second distance threshold range is greater than the maximum value of the first distance threshold range. The proximity sensor may be an infrared sensor, an ultrasonic sensor, a capacitance sensor, or the like for detecting the proximity of a human body.
Referring to fig. 4, the present application further provides a receiving mode selecting method, using the above-mentioned call terminal, where the receiving mode selecting method includes:
s1, acquiring current receiving mode information, and extracting receiver type information contained in the current receiving mode information;
s2, when the receiver type information contained in the current receiving mode information is a directional receiver, connecting the output end of the switching unit with the input end of the ultrasonic modulation unit;
and S3, when the receiver type information contained in the current receiving mode information is a conventional receiver, connecting the output end of the switching unit with the input end of the conventional receiver.
In the present embodiment, when a call is made using the above-described call terminal, the selection of the reception mode is performed in the above-described steps S1 to S3.
In the step S1, the current receiving mode information may be generated according to a default receiving mode of the call preset by the user, for example, when the user sets the call mode corresponding to the conventional receiver to be the default receiving mode of the call, the type of the receiver included in the current receiving mode information is the conventional receiver; the current receiving mode information may also be generated by a receiving mode selected by the user when the user makes or receives a call, for example, when the user makes or receives a call, a selection icon (for example, the content of the selection icon may be a directional receiver and a conventional receiver) is automatically displayed on a display screen of the mobile phone, so that the user can select the receiving mode, and the current receiving mode information is generated according to the receiving mode currently selected by the user; the current receiving mode information may also be a receiving mode automatically selected according to a specific scene of the call, for example, according to a call duration, a distance between the user and the mobile phone, and the like.
In step S2, when the receiver type included in the current reception mode information is a directional receiver, the output terminal of the switching unit is connected to the input terminal of the ultrasonic modulation unit. A baseband unit of the mobile phone outputs a digital audio signal, the digital audio signal is subjected to digital-to-analog conversion and signal amplification through an audio processing unit to obtain a preprocessed audio signal, the preprocessed audio signal is input to the ultrasonic modulation unit through a switching unit, and meanwhile, an ultrasonic carrier signal output by the baseband unit is also input to the ultrasonic modulation unit; modulating the preprocessed audio signal to an ultrasonic carrier signal through an ultrasonic modulation unit to obtain a modulated audio ultrasonic signal; the modulated audio ultrasonic signal is amplified through the ultrasonic amplification unit, and finally the amplified modulated audio ultrasonic signal is input to the directional receiver, the directional receiver directionally transmits the amplified modulated audio ultrasonic signal to the air and self-demodulates the modulated audio ultrasonic signal into an audible sound signal in the air, and a user can hear the converted sound through the directional receiver. Specifically, the directional receiver usually includes an ultrasound transducer assembly, and the ultrasound transducer assembly may be a single ultrasound transducer or an array module composed of a plurality of ultrasound transducers. The ultrasonic transducer is a device capable of converting high-frequency electric energy into mechanical energy, in the embodiment, a preprocessed audio signal is modulated onto an ultrasonic carrier signal, the signal obtained by amplification is a high-frequency electric signal, the high-frequency electric signal causes the change of an electric field or a magnetic field of an electric energy storage element in the ultrasonic transducer, the change generates a driving force on a mechanical vibration system of the ultrasonic transducer to enable the mechanical vibration system to enter a vibration state, so that a medium which is in contact with the mechanical vibration system of the ultrasonic transducer is driven to vibrate, ultrasonic waves are radiated into the medium, and the ultrasonic waves are directionally transmitted out based on the fact that the ultrasonic waves are directionally transmitted in the air. Due to the nonlinear acoustic effect of air, the ultrasonic waves are self-demodulated in the process of directional propagation in the air, and are self-demodulated into audible sound waves with frequencies falling in an audible interval at a specified position at a certain distance from the mobile phone. Namely, the above-mentioned designated position is a position which is in the direction of the directional receiver directionally transmitting the modulated audio ultrasonic signal and has a certain distance from the call terminal. At the designated location, the ultrasonic waves self-demodulate into audible sound waves. The user can actively adjust the direction and the distance between the user and the call terminal, so that the user is positioned at the specified position, and the sound of the opposite party of the call can be heard; for other people who are not at the specified position, the audible sound wave cannot be heard, namely the sound of the other party in the call cannot be heard, and the information safety in the call process is ensured. Specifically, the position at which the ultrasonic wave self-demodulates can be adjusted by adjusting the frequency of the ultrasonic carrier signal transmitted by the above-described baseband unit or adjusting the output power of the ultrasonic amplification unit. When a directional receiver is used to output a sound signal, a user can perform directional listening at a designated position at a certain distance from the mobile phone.
In step S3, when the receiver type included in the current receiving mode information is a normal receiver, the output terminal of the switching unit is connected to the input terminal of the normal receiver. The baseband unit of the mobile phone outputs audio signals, the audio signals are subjected to digital-to-analog conversion and signal amplification through the audio processing unit to obtain preprocessed audio signals, the preprocessed audio signals are input to the conventional telephone receiver through the switching unit, the preprocessed audio signals are converted into audible sound signals through the conventional telephone receiver, and a user can hear the converted sound through the conventional telephone receiver. Specifically, the conventional telephone receiver is typically a conventional telephone receiver such as a handset in a mobile phone. When the output end of the switching unit is connected to the input end of the conventional telephone receiver, which is the normal telephone answering method of the mobile phone, the head of the user needs to be close to the mobile phone to hear the voice of the other party.
In the method for selecting a receiving mode of this embodiment, when the call terminal is used for a call, a user can switch a connection object at the output end of the switching unit according to the type information of a receiver included in the current receiving mode information, so as to select a directional receiver or a conventional receiver to perform a call; when a conventional telephone receiver is selected, the head of a user clings to the mobile phone to carry out communication; when the directional receiver is selected, a user can perform directional answering at a specified position at a certain distance from the mobile phone, the head of the user is not required to be attached to the mobile phone, and radiation influence is reduced; meanwhile, only the user at the designated position can hear the sound of the other party, and other people at other positions can not hear the sound of the other party, so that the defect that the sound of the other party is influenced or the call information is leaked due to the fact that the loudspeaker is used for being externally placed is overcome.
In one embodiment, the call terminal includes a proximity sensor, and the step S1 of acquiring the current reception mode information and extracting the receiver type information included in the current reception mode information includes:
s01, acquiring the distance between a user and the call terminal through the proximity sensor, and judging a threshold range where the distance is located, wherein the threshold range comprises a first distance threshold range and a second distance threshold range, and the minimum value of the second distance threshold range is larger than the maximum value of the first distance threshold range;
s02, when the distance is in the first distance threshold range, setting the receiver type contained in the current receiving mode information as the conventional receiver;
and S03, when the distance is within the second distance threshold range, setting the receiver type contained in the current receiving mode information as the directional receiver.
In this embodiment, the proximity sensor is disposed inside the mobile phone or on the surface of the housing 10, and in steps S01 to S03, the distance between the user and the mobile phone is detected by the proximity sensor, and the reception mode is automatically switched according to the distance between the user and the mobile phone. In the step S02, when it is detected that the user is very close to the mobile phone and within the first distance threshold range, indicating that the face of the user is tightly attached to the mobile phone at this time, automatically selecting a receiving mode corresponding to the conventional receiver; in the step S03, when it is detected that the distance between the user and the mobile phone is within the second distance threshold range, which indicates that the face of the user is at a certain distance from the mobile phone (but not too far away, which is within the second distance threshold range), the receiver mode corresponding to the directional receiver is automatically selected; in addition, when the fact that the distance between the user and the mobile phone is far and larger than the maximum value of the second distance threshold range is detected, the receiving mode corresponding to the hands-free mode can be automatically selected. The proximity sensor may be an infrared sensor, an ultrasonic sensor, a capacitance sensor, or the like for detecting the proximity of a human body.
In an embodiment, after the step S3 of obtaining the current receiving mode information and extracting that the receiver type information included in the current receiving mode information is the conventional receiver, and connecting the output end of the switching unit with the input end of the conventional receiver, the method includes:
s41, in the running process of a conversation program, detecting whether the conversation program runs on a foreground interface of the conversation terminal;
and S51, if not, setting the receiver type information contained in the current receiving mode information as the directional receiver.
In this embodiment, when the user switches the call program from the foreground interface to the background interface in the call process, which indicates that the user is operating the mobile phone at this time, the face of the user is not tightly attached to the mobile phone, and the user is not too far away from the mobile phone when operating the mobile phone and is suitable for using the directional receiver to perform a call, the type information of the receiver included in the receiving mode information is automatically set as the directional receiver, the mobile phone is automatically switched to the receiving mode corresponding to the directional receiver, and the user can perform a call at a certain distance from the mobile phone, and because hands-free is not used, the call information is not interfered by others, and the call information is not leaked.
In one embodiment, the step S3 of connecting the output terminal of the switching unit and the input terminal of the conventional receiver when the receiver type information included in the current receiving mode information is the conventional receiver and the time when the output terminal of the switching unit is connected to the input terminal of the conventional receiver is taken as the first time includes:
s42, monitoring whether the duration between the current time and the first time is greater than a preset duration or not in the running process of a conversation program;
and S52, if yes, setting the receiver type information contained in the current receiving mode information as the directional receiver.
In this embodiment, when the duration between the current time and the first time is longer than the preset duration, it indicates that the duration of the call between the head of the user and the mobile phone is long, the head receives radio frequency radiation for a long time and is not good for a human body, the receiver type information included in the receiving mode information is automatically set as a directional receiver, the mobile phone is automatically switched to a receiving mode corresponding to the directional receiver, the user can make a call at a certain distance from the mobile phone, and because hands-free is not used, the call information is not interfered by others, and the call information is not leaked.
In another embodiment, the above-mentioned call terminal includes an acceleration sensor, and after the step S3 of connecting the output end of the switching unit with the input end of the conventional receiver when the receiver type included in the current receiving mode information is the conventional receiver, the method includes:
acquiring displacement acceleration of the call terminal through the acceleration sensor, converting the displacement acceleration into displacement speed through integral operation, and then judging a speed threshold range where the displacement speed is located, wherein the speed threshold range comprises a first speed threshold range and a second speed threshold range, and the minimum value of the second speed threshold range is larger than the maximum value of the first speed threshold range;
when the displacement speed is within a first speed threshold range, setting the receiver type contained in the current receiving mode information as the conventional receiver;
and when the displacement speed is within a second speed threshold range, setting the receiver type contained in the current receiving mode information as the directional receiver.
In this embodiment, the acceleration sensor is used to test the displacement speed of the mobile phone. When the fact that the displacement speed is very low and is within the range of the first speed threshold value is detected, the fact that the user is likely to answer the call in situ at the moment is indicated, the user holds the call, the mobile phone is conveniently placed near the face, and the call receiving mode corresponding to the conventional telephone receiver is automatically selected; when the displacement speed is detected to be fast and is within a second speed threshold range, wherein the speed corresponding to the second speed threshold range is a speed range corresponding to the running of the user, for example, 1-20 km/h, it is indicated that the user is likely to be in running motion at the moment, the user can answer the call while running, and the mobile phone can be placed in an arm bag, and a call receiving mode corresponding to the directional receiver is automatically selected; in addition, when the displacement speed is detected to be fast and is larger than the second speed threshold range, the user may be in a vehicle, a selection icon may pop up on the display screen at the moment, and the hands-free call mode is also added to the selection icon, so that the user can select the receiving mode.
In another embodiment, the above-mentioned call terminal includes an acceleration sensor, and after the step S3 of connecting the output end of the switching unit with the input end of the conventional receiver when the receiver type included in the current receiving mode information is the conventional receiver, the method includes:
step counting monitoring is carried out through the acceleration sensor, and the step number of the user in the appointed time is obtained;
comparing the step number with a preset step number;
when the step number is larger than a preset step number, setting the receiver type contained in the current receiving mode information as the directional receiver;
and when the step number is not more than the preset step number, setting the receiver type contained in the current receiving mode information as the conventional receiver.
In this embodiment, when the number of steps is greater than the preset number of steps, it indicates that the user is running and receiving the call while running, and the mobile phone may be placed in the arm pocket, and the call receiving mode corresponding to the directional receiver is automatically selected. When the step number is not more than the preset step number, the fact that the user is likely to answer the call in a relatively static state is indicated, for example, the user stands in place or sits in a vehicle, at the moment, the user can conveniently hold the call with hands, the mobile phone can be placed near the face, and a call answering mode corresponding to a conventional telephone receiver is automatically selected.
In another embodiment, the method of detecting displacement speed and steps by the acceleration sensor may be used in combination to distinguish whether the user stands on the spot (with smaller acceleration and fewer steps) or answers the phone while driving (with larger acceleration and fewer steps), so as to achieve more accurate user state determination accuracy and more intelligently select a receiving mode suitable for the current state of the user. For example, when it is determined that the user is in the driving process, a selection icon may pop up on the display screen, and the hands-free call mode is also added to the selection icon for the user to select the call receiving mode, for example, when the user is a passenger, a conventional telephone receiver may be selected as needed; when the user is a driver, the handsfree talk mode can be selected as desired.
Referring to fig. 5, the present application also provides a computer device 3 including instructions, which includes a processor 4, a memory 1 and a computer program 2 stored on the memory 1 and operable on the processor 4, wherein the processor 4 implements the above-mentioned method for selecting a talk mode when executing the computer program 2.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.
The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (8)
1. A method for selecting a reception mode, characterized by using a call terminal, the call terminal comprising: the system comprises an audio processing unit, an ultrasonic modulation unit, a switching unit, a directional receiver and a conventional receiver, wherein the output end of the audio processing unit is connected with the input end of the ultrasonic modulation unit through the switching unit, and the output end of the switching unit is switched between the input end of the conventional receiver and the input end of the ultrasonic modulation unit;
the method for selecting the telephone receiving mode comprises the following steps:
acquiring current receiving mode information, and extracting receiver type information contained in the current receiving mode information;
when the receiver type information contained in the current receiver mode information is a directional receiver, connecting the output end of the switching unit with the input end of the ultrasonic modulation unit;
when the receiver type information contained in the current receiving mode information is a conventional receiver, connecting the output end of the switching unit with the input end of the conventional receiver;
the communication terminal comprises a proximity sensor, and before the steps of acquiring the current receiving mode information and extracting the receiver type information contained in the current receiving mode information, the method comprises the following steps:
acquiring the distance between a user and the call terminal through the proximity sensor, and judging a threshold range in which the distance is located, wherein the threshold range comprises a first distance threshold range and a second distance threshold range, and the minimum value of the second distance threshold range is greater than the maximum value of the first distance threshold range;
when the distance is within the first distance threshold range, setting the receiver type contained in the current receiving mode information as the conventional receiver;
and when the distance is within the range of the second distance threshold, setting the receiver type contained in the current receiving mode information as the directional receiver.
2. The method of claim 1, wherein when the receiver type information included in the current receiver mode information is a conventional receiver, the step of connecting the output terminal of the switching unit with the input terminal of the conventional receiver comprises:
detecting whether a call program runs on a foreground interface of the call terminal or not in the running process of the call program;
and if not, setting the receiver type information contained in the current receiving mode information as the directional receiver.
3. The method of claim 1, wherein a time when the output terminal of the switching unit is connected to the input terminal of the conventional receiver is taken as a first time, and when the receiver type information included in the current receiving mode information is a conventional receiver, the step of connecting the output terminal of the switching unit to the input terminal of the conventional receiver comprises:
monitoring whether the duration between the current moment and the first moment is greater than a preset duration or not in the running process of a call program;
and if so, setting the receiver type information contained in the current receiving mode information as the directional receiver.
4. The reception mode selection method of claim 1, wherein the call terminal comprises: a baseband unit and an ultrasonic amplification unit;
the output end of the baseband unit is respectively connected with the input end of the audio processing unit and the input end of the ultrasonic modulation unit, the output end of the audio processing unit is connected with the input end of the ultrasonic modulation unit, the output end of the ultrasonic modulation unit is connected with the input end of the ultrasonic amplification unit, and the output end of the ultrasonic amplification unit is connected with the directional telephone receiver;
the audio signal output by the baseband unit is input to the audio processing unit, a preprocessed audio signal is obtained after the audio signal is processed by the audio processing unit, the preprocessed audio signal is input to the ultrasonic modulation unit, an ultrasonic carrier signal output by the baseband unit is also input to the ultrasonic modulation unit, the ultrasonic modulation unit modulates the preprocessed audio signal onto the ultrasonic carrier signal to obtain a modulated audio ultrasonic signal, the modulated audio ultrasonic signal is input to the ultrasonic amplification unit for signal amplification, finally, the amplified modulated audio ultrasonic signal is input to the directional receiver, and the directional receiver directionally emits the amplified modulated audio ultrasonic signal into the air and automatically demodulates the modulated audio ultrasonic signal into an audible sound signal at a designated position in the air.
5. The method for selecting a receiving mode according to claim 4, wherein the communication terminal includes a housing, the directional receiver includes an ultrasonic transducer assembly, a sound guide tube, and a sound transmitting duct, the sound transmitting duct is provided on the housing, and the ultrasonic transducer assembly is connected to the sound transmitting duct through the sound guide tube.
6. The method of claim 5, wherein the sound conduction pathway comprises one of an earphone jack and a USB jack.
7. The method of claim 4, wherein the telephony terminal further comprises a power unit, the power unit is configured to provide power to the baseband unit, the audio processing unit, the ultrasonic modulation unit, and the ultrasonic amplification unit; the power supply unit further comprises a boosting subunit, and the boosting subunit is connected with the ultrasonic amplification unit and used for providing electric energy for the ultrasonic amplification unit.
8. A computer device comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, the processor implementing the method of selecting a listening mode according to any one of claims 1-3 when executing the computer program.
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