CN108702165A - A kind of signal of radio determines method and radio - Google Patents
A kind of signal of radio determines method and radio Download PDFInfo
- Publication number
- CN108702165A CN108702165A CN201780009086.6A CN201780009086A CN108702165A CN 108702165 A CN108702165 A CN 108702165A CN 201780009086 A CN201780009086 A CN 201780009086A CN 108702165 A CN108702165 A CN 108702165A
- Authority
- CN
- China
- Prior art keywords
- signal
- radio
- threshold
- intensity
- bandwidth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
Abstract
A kind of signal of radio determines method and radio, and the radio reception effect to solve the problems, such as radio is poor.In the method, radio can determine that the signal is radio signals according to the comparison of the bandwidth threshold of the bandwidth and setting of received signal.In this way, the radio may determine that received signal is radio signals, the radio reception effect of the radio can be improved.
Description
This application claims on 01 03rd, 2017 submission Patent Office of the People's Republic of China, application No. is the 201710001671.3, priority of the Chinese patent application of entitled " method and apparatus of vehicle-mounted FM channel selection ", entire contents are hereby incorporated by reference in the application.
This application involves receiver technics fields more particularly to a kind of signal of radio to determine method and radio.
At present, radio station can generate radio signals using frequency modulation (frequency modulation, FM) modulation, i.e., radio station is according to the variation of the amplitude of audio signal (modulated signal) to be sent, and change the frequency of carrier signal, generate radio signals.Wherein, the frequency of the carrier signal is to obtain the legal frequency of radio regulatory organization approval authorization.
Since signal is after transmission process is interfered, the amplitude of signal can be seriously affected, wherein amplitude is properly termed as intensity (level) again.Therefore, radio is during tuning, it will usually according to the intensity of the signal received, exclude the interference signal, identify radio signals.
Due to traditional radio reception mainboard bottom make an uproar low, noiseless source or interference source it is less, traditional radio can relatively easily judge that received signal is radio signals or interference signal by the intensity of signal.However, as the complexity of radio product, functional integration are higher and higher, the mainboard bottom of current radio make an uproar get higher, interference source also becomes more.In the case where hardware environment is deteriorated, current radio still determines method using above-mentioned signal, is easy in strong signal region, interference signal is mistakenly identified as radio signals, and in low signal areas, radio signals are mistakenly identified as interference signal, cause the radio reception effect of radio poor.
Summary of the invention
The signal that the embodiment of the present application provides a kind of radio determines method and radio, and the radio reception effect to solve the problems, such as radio is poor.
First aspect, the signal that the embodiment of the present application provides a kind of radio determines method, this method comprises: radio can signal based on the received bandwidth compared with the bandwidth threshold of setting, determine that the signal is radio signals, such as, when the band is wider than the wide threshold value of first band (such as 90kHz, 95kHz or 100kHz), the radio determines that the signal is radio signals.
By the above method, the radio can judge received signal for radio signals, the radio reception effect of the radio can be improved using the bandwidth of signal as the principal element for judging radio signals.
In a possible design, when the bandwidth is less than the second bandwidth threshold (such as 40kHz, 45kHz or 55kHz), the radio determines that the signal is interference signal, wherein second bandwidth threshold is less than first bandwidth threshold.
By above-mentioned design, the radio can determine that received signal is interference signal, in this way, the radio can abandon the interference signal, if the radio is during tuning, the frequency that the radio does not use the frequency for receiving the interference signal as radio station, to improve the radio reception effect of radio.
In a possible design, when the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the radio obtains the mass parameter of the signal, and the mass parameter is used to indicate the quality of the signal；And according to the comparison result of the mass parameter of the signal and quality parameter thresholds, determine that the signal is radio signals.
By above-mentioned design, the radio can also pass through the mass parameter of received signal, determine that the signal is radio signals, in this way, the radio can be using high-quality signal as radio signals, the signal is demodulated so as to improving radio and obtains the quality of signal to be played, the listening experience of user may finally be improved.
In a possible design, the mass parameter involved in above-mentioned design includes at least one of the following: intensity, noise and multipath interference strength；Wherein,
When the mass parameter includes intensity, the comparison result includes that the intensity of the signal is greater than intensity threshold；
When the mass parameter includes noise (such as USN), the comparison result includes that the noise of the signal is less than noise threshold；
When the mass parameter includes multipath interference strength (such as WAM), the comparison result includes that the multipath interference strength of the signal is less than multipath interference strength threshold value.
By above-mentioned design, the radio can pass through the intensity of received signal, noise and multipath interference strength, determine that the signal is radio signals, in this way, the radio can be using high-quality signal as radio signals, the signal is demodulated so as to improving radio and obtains the quality of signal to be played, the listening experience of user may finally be improved.
In a possible design, when in the mass parameter including a variety of mass parameters, the radio can determine that the received signal is radio signals or interference signal by following methods:
Mode one: if any of described mass parameter of received signal parameter meet radio signals condition (such as, the intensity of the signal is greater than intensity threshold, the noise of the signal is less than noise threshold, or the multipath interference strength of the signal is less than multipath interference strength threshold value), then the radio determines that the signal is radio signals；Otherwise, the radio determines that the signal is interference signal.
Mode two: if each parameter is all satisfied the condition of corresponding radio signals in the mass parameter of the received signal, the radio determines that the signal is radio signals；Otherwise, the radio determines that the signal is interference signal.
By above-mentioned design, the radio can determine the type of the signal by the mass parameter in the case where that can not determine that the received signal is interference signal or radio signals by bandwidth.
In a possible design, intensity, the parameters such as noise and multipath interference strength can be used as the secondary cause that radio determines signal kinds, and the priority of different parameters is different.Such as, when the bandwidth is greater than or equal to second bandwidth threshold, and when being less than or equal to first bandwidth threshold, the radio by the parameter of the first secondary cause (such as, the intensity of above-mentioned signal, at least one of noise and multipath interference strength parameter) determine that the signal is interference signal or radio signals, if the type of the signal can not be determined, the parameter (at least one parameter in above-mentioned parameter in addition to the parameter of the first secondary cause) for then continuing through the second secondary cause determines that the signal is interference signal or radio signals, until passing through the parameter of the last one secondary cause, determine the type of the radio signals.
In a possible design, it is the first secondary cause in intensity, interference parameter is under the scene of the second secondary cause, and when the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the radio obtains the intensity of the signal；And by following steps, the type of the signal is determined:
When the intensity is greater than the first intensity threshold (such as 50dBuV), the radio determines that the signal is radio signals；
When the intensity is less than the second intensity threshold (such as 20dBuV), the radio determines the signal for interference
Signal, wherein second intensity threshold is less than first intensity threshold.
By above method, the radio can determine the type of the signal by the mass parameter in the case where that can not determine that the received signal is interference signal or radio signals by bandwidth.
In a possible design, when the intensity is greater than or equal to second intensity threshold and is less than or equal to first intensity threshold, the radio obtains the interference parameter of the signal, and the interference parameter includes at least one of the following: noise, multipath interference strength；And by following steps, the type of the signal is determined:
When the interference parameter is less than interference parameter threshold value, the radio determines that the signal is radio signals；
When the interference parameter is greater than or equal to the interference parameter threshold value, the radio determines that the signal is interference signal.
In the radio type of the received signal can not be determined passing through bandwidth, and in the case where can not also determining the type of the signal by the intensity of signal, by above-mentioned design, the radio can also determine the type of the signal by the interference parameter of the signal.In this way, the radio can demodulate the signal so as to improving radio and obtain the quality of signal to be played, may finally improve the listening experience of user using high-quality signal as radio signals.
Second aspect, the embodiment of the present application also provides a kind of radio, which has the function of realizing radio behavior in above method example.The function can also execute corresponding software realization by hardware realization by hardware.The hardware or software include one or more modules corresponding with above-mentioned function.
It include receiving unit and processing unit in the structure of the radio in a kind of possible design, these units can execute the corresponding function in above method example, referring specifically to the detailed description in method example, be not repeated herein.
It include receiver, processor and memory in the structure of the radio in a kind of possible design, the receiver is for receiving signal, the processor is configured to the radio is supported to execute corresponding function in the above method.The memory is coupled with the processor, saves the necessary program instruction of radio (or application program) and data.
The third aspect, a kind of computer storage medium is also provided in the embodiment of the present application, software program is stored in the storage medium, which can realize the method that any one design of first aspect or above-mentioned first aspect provides when being read and executed by one or more processors.
In the embodiment of the present application, radio can signal based on the received bandwidth compared with the bandwidth threshold of setting, determine that the signal is radio signals.Since signal is in transmission process, although the intensity of signal is possible to change greatly, the bandwidth variation of signal is smaller.In addition, the bandwidth difference of radio signals and interference signal is larger, therefore, compared with the existing technology, radio judges received signal using the bandwidth of signal as the principal element for judging radio signals for radio signals in method provided by the embodiments of the present application, and the radio reception effect of radio can be improved.
Fig. 1 is that a kind of signal of radio provided by the embodiments of the present application determines method flow diagram；
Fig. 2 is that a kind of signal of radio provided by the embodiments of the present application determines method example flow chart；
Fig. 3 is that the signal of another radio provided by the embodiments of the present application determines method example flow chart；
Fig. 4 is a kind of structure chart of radio provided by the embodiments of the present application；
Fig. 5 is the structure chart of another radio provided by the embodiments of the present application.
This application provides a kind of signals of radio to determine method and radio, and the radio reception effect to solve the problems, such as radio is poor.Wherein the method and the radio be based on the same inventive concept, since the method is similar with the principle that the radio solves the problems, such as, the implementation of the radio and the method can be with cross-reference, and overlaps will not be repeated.
In method provided by the embodiments of the present application, radio can signal based on the received bandwidth compared with the bandwidth threshold of setting, determine that the signal is radio signals.Since signal is in transmission process, although the intensity of signal is possible to change greatly, the bandwidth variation of signal is smaller.In addition, the bandwidth difference of radio signals and interference signal is larger, therefore, compared with the existing technology, radio judges received signal using the bandwidth of signal as the principal element for judging radio signals for radio signals in the method, and the radio reception effect of radio can be improved.
Hereinafter, the part term in the application is explained, so as to those skilled in the art understand that.
1, the invention relates to signal bandwidth, be the signal the frequency in frequency spectrum width, i.e., the difference in the frequency spectrum, between the highest frequency component and lowest frequency components of the signal.
Under normal conditions, the energy of interference signal is smaller relative to radio signals, factor due to influencing signal energy includes the intensity of signal and the bandwidth of signal, i.e. in the case where signal energy is fixed, the intensity of signal is bigger, the bandwidth of signal is smaller, under the scene that radio can receive the interference signal, it is clear that the intensity of the interference signal is larger, therefore the bandwidth of the interference signal is smaller, usually tens kHz or less.
Due to providing in international standard, FM, which modulates broadcast frequency separation, to be 100 kHz (kHz), 200kHz, 300kHz or 400kHz, and accordingly, with respect to interference signal, the bandwidth for the radio signals that radio station generates and emits is larger.
In addition, various disturbing factors are larger to the intensity effect of signal, and weaker to the bandwidth contributions of signal in signals transmission, therefore, in transmission process, the bandwidth variation of radio signals and interference signal is smaller for radio signals and interference signal.It is described by the bandwidth above to the radio station radio signals generated and the interference signal it is found that having obvious gap between the bandwidth for the interference signal that radio station receives and the bandwidth of the radio signals received.
2, the invention relates to the first bandwidth threshold, to directly determine the reference value that radio received signal is radio signals.Optionally, first bandwidth value range of the radio signals that the value of first bandwidth threshold can launch according to radio station in general and the second bandwidth value range of general interference signal are specifically arranged, such as, first bandwidth threshold can be less than or equal to the minimum value in the first bandwidth value range, or the maximum value that can be greater than in the second bandwidth value range.Optionally, first bandwidth threshold can also specifically be set according to specific application scenarios.In another example according to the above-mentioned bandwidth description to radio signals and interference signal it is found that the first bandwidth threshold value is 90kHz, 95kHz or 100kHz etc..It should be noted that the embodiment of the present application is not especially limited the value of first bandwidth threshold.
3, the invention relates to the second bandwidth threshold, to directly determine the reference value that radio received signal is interference signal.Wherein, according to the above-mentioned description to the first bandwidth threshold it is found that second bandwidth threshold is less than first bandwidth threshold.Identical as the value principle of first bandwidth threshold, the value of first bandwidth threshold can be specifically arranged according to the second bandwidth value range, for example, second bandwidth threshold can be equal to or less than the maximum value of the second bandwidth value range.Optionally, first bandwidth threshold can also specifically be set according to specific application scenarios.In another example according to the above-mentioned bandwidth description to radio signals and interference signal it is found that the second bandwidth threshold value is 40kHz, 45kHz or 50kHz etc..It should be noted that the embodiment of the present application is not especially limited the value of second bandwidth threshold.
4, the invention relates to signal mass parameter, be used to indicate the quality of the signal, therefore the value of the quality of the signal can embody the quality that radio demodulates the signal to be played that the signal obtains, and affect the radio reception
The listening experience of user when the signal to be played is put in machine sowing.Optionally, the mass parameter of the signal may include at least one of following: intensity, interference parameter, wherein the interference parameter includes: the parameters such as noise and/or multipath interference strength, and the application is not construed as limiting this.
In the embodiment of the present application, the mass parameter of the signal is to be not determined by radio according to the principal element of the bandwidth of signal this judgement radio signals in the case that whether signal be radio signals, further judges the factor of radio signals, i.e. secondary cause.Optionally, the secondary cause can be one of above-mentioned many kinds of parameters or many kinds of parameters.Optionally, the secondary cause can also be directed to the different priority of different parameter settings there are many when parameter.
For example, noise is as the second secondary cause, and multipath interference strength is as third secondary cause etc. using intensity as the first secondary cause；In this case, the radio is when that can not determine which kind of signal is received signal be by the bandwidth of signal, the intensity for continuing through signal is determined, if still can not determine which kind of signal is received signal be, then further determined by noise, so continue, until determining that received signal is interference signal or radio signals.
In another example interference parameter (noise and/or multipath interference strength) is used as the second secondary cause using intensity as the first secondary cause；In this case, when the radio can not determine which kind of signal is received signal be by the bandwidth of signal, the intensity for continuing through signal is determined, if still can not determine which kind of signal is received signal be, then further determined simultaneously by interference parameter, so that it is determined that received signal is interference signal or radio signals.
5, the invention relates to quality parameter thresholds, be that radio judges that received signal is interference signal/radio signals reference value.Since the quality of interference signal is generally poor, and even if the poor signal of radio demodulation quality, the quality of obtained signal to be played also can be poor, thereby reduces the listening experience of user.Therefore, the higher signal of quality can be determined as radio signals by the mass parameter of received signal compared with the quality parameter thresholds by radio.
Known to the above-mentioned description to mass parameter, the mass parameter of the signal includes at least one of the following: the parameters such as intensity, noise, multipath interference strength, accordingly, every kind of mass parameter has corresponding quality parameter thresholds, therefore, the quality parameter thresholds include at least one of the following: intensity threshold, noise threshold, multipath interference strength threshold value etc., and the application is also not construed as limiting this.
Optionally, the value of the quality parameter thresholds can be specifically arranged according to the value range of interference signal and the mass parameter of radio signals, the value range of two kinds of signals and signal can also be combined to determine that the overall plan of method is specifically arranged, the application is not construed as limiting this.
6, the invention relates to signal intensity, can be by the expression of the amplitude of the signal, unit is decibel (dBuV).
7, the invention relates to noise, can be ultrasonic hash (UltraSonic Noise, USN).
8, the invention relates to multipath interference strength, can be indicated by broadband amplitude modulation (Wideband Amplitude Modulation, WAM).
It should be noted that above-mentioned intensity, noise, multipath interference strength, can embody the intensity of various interference suffered by signal, the interference strength suffered by the signal is larger, the so described signal it is second-rate, the interference strength suffered by the signal is smaller, then the quality of the signal is preferable.Therefore, it can serve to indicate that the quality of signal.
In addition, it is necessary to understand, in the description of the present application, the vocabulary such as " first ", " second " are only used for distinguishing the purpose of description, are not understood to indicate or imply relative importance, can not be interpreted as indication or suggestion sequence.
The embodiment of the present application is described in further detail below in conjunction with attached drawing.
The signal that Fig. 1 shows a kind of radio provided by the embodiments of the present application determines method, and this method is suitable for the radio of various FM modulation, for example, normal domestic use radio, vehicle-mounted radio etc..The radio can be during tuning, in the case where determining that the signal received under certain frequency is radio signals by this method, then the radio can lock
The frequency, and be the frequency that radio station uses by the frequency.As shown in fig.1, the process of the method includes:
S101: radio upon receipt of the signals, determines the bandwidth of the signal.
Radio signals are that radio station generates audio signal progress FM modulation to be sent, i.e., radio station changes the frequency generation radio signals of high-frequency carrier signal according to the variation of the amplitude of the audio signal.And since above to the description of interference signal it is found that the bandwidth of the interference signal is smaller, the interference signal is considered as carrier wave.Obviously, there is notable difference between the bandwidth of radio signals and the bandwidth of interference signal.Therefore, in some embodiments of the present application, the radio utilizes above-mentioned difference, and interference signal and radio signals are distinguished, the accuracy that the radio determines the type of received signal can be improved.
S102: when the band is wider than the wide threshold value of first band, the radio determines that the signal is radio signals.
Due to providing that the FM of China modulates broadcast frequency separation 200kHz in international standard, the necessary bandwidth of radio signals is 200kHz, and usually, in 100% modulation degree of monophonic, the bandwidth of radio signals is 180kHz, and the bandwidth of radio signals is 256kHz when stereo 100% modulation degree, therefore, in China, the preferable radio signals of radio reception effect will be generally above 100kHz's.Therefore, optionally, first bandwidth threshold can be to be set as 100kHz.Certainly, first bandwidth threshold may be set to be 90kHz or 95kHz etc., and the embodiment of the present application is not construed as limiting this.
It should be noted that being illustrated so that first bandwidth threshold is 100kHz as an example in subsequent embodiment.
Optionally, in some concrete scenes, in order to guarantee that the radio determines the accuracy of radio signals, the radio is in the case where determining that the band is wider than first bandwidth threshold, it is also conceivable to some secondary causes, the i.e. mass parameter of signal, such as intensity etc..
Optionally, through the above steps, the radio may determine that received signal is radio signals, and the radio reception effect of the radio can be improved.
Optionally, the method also includes following steps:
S103: when the bandwidth is less than the second bandwidth threshold, the radio determines that the signal is interference signal.
Wherein, second bandwidth threshold is less than first bandwidth threshold.Can be according to the description of the above-mentioned bandwidth to interference signal it is found that the bandwidth of interference signal is smaller, usually tens kHz.Therefore, optionally, second bandwidth threshold can be set to 50kHz.Certainly, second bandwidth threshold may be set to be 40kHz, 45kHz or 55kHz etc., and the embodiment of the present application is not construed as limiting this.
It should be noted that being illustrated so that second bandwidth threshold is 50kHz as an example in subsequent embodiment.
By this step, the radio can determine that received signal is interference signal, in this way, the radio can abandon the interference signal, if the radio is during tuning, the frequency that the radio does not use the frequency for receiving the interference signal as radio station, to improve the radio reception effect of radio.
By the description to S102 and S103, pass through above-mentioned two step, it can determine that received signal is interference signal or radio signals, so, in practical applications, due to various aspects, can also there be the interference signal of bandwidth larger (being greater than or equal to second bandwidth threshold), and/or the radio signals of bandwidth smaller (being less than or equal to first bandwidth threshold).Therefore, optionally, method provided by the embodiments of the present application further include: when the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, radio determines the mode of radio signals, may refer to following S104a.
S104a: when the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the radio obtains the mass parameter of the signal, and according to the comparison result of the mass parameter of the signal and quality parameter thresholds, determine that the signal is radio signals, the mass parameter is used to indicate the quality of the signal.
By above-mentioned S104a, the radio can also determine the signal for electricity by the mass parameter of received signal
Platform signal, in this way, the radio can demodulate the signal so as to improving radio and obtain the quality of signal to be played, may finally improve the listening experience of user using high-quality signal as radio signals.
By the above-mentioned description to mass parameter it is found that the mass parameter may include at least one of following: the parameters such as intensity, noise, multipath interference strength.Optionally, in S104a, the parameter for including in the mass parameter does not distinguish priority.
Optionally, when the mass parameter only includes above-mentioned one of them, the radio directly can determine whether the signal is radio signals, such as following scene according to the comparison result:
Scene one: the mass parameter only includes intensity, and when the intensity that the comparison result is the signal is greater than intensity threshold, the radio determines that the signal is radio signals；When the intensity that the comparison result is the signal is less than or equal to the intensity threshold, the radio determines that the signal is interference signal.
Under the scene, the intensity threshold can be configured according to the value of the intensity for the radio signals for not influencing user's listening experience, for example, the intensity threshold can be set to 35dBuV, 40dBuV etc., the application is not construed as limiting this.
Scene two: the mass parameter only includes noise (such as USN), and when the noise that the comparison result is the signal is less than noise threshold, the radio determines that the signal is radio signals；When the noise that the comparison result is the signal is greater than or equal to noise threshold, the radio determines that the signal is interference signal.
Under the scene, the noise threshold can be configured according to the value of the noise for the radio signals for not influencing user's listening experience, such as the noise threshold can be 15%.
Scene three: the mass parameter only includes multipath interference strength (such as WAM), and when the multipath interference strength that the comparison result is the signal is less than multipath interference strength threshold value, the radio determines that the signal is radio signals；When the multipath interference strength that the comparison result is the signal is greater than or equal to multipath interference strength threshold value, the radio determines that the signal is interference signal.
Similarly, under the scene, the multipath interference strength threshold value can be configured according to the value of the multipath interference strength for the radio signals for not influencing user's listening experience, such as the multipath interference strength threshold value can be 15%.
Optionally, when the mass parameter only includes it is above-mentioned wherein multinomial when, the radio can determine that the signal is radio signals or interference signal according to the comparison result of a variety of mass parameters, such as following scene:
Scene four: the mass parameter includes intensity and noise.
Scene five: the mass parameter includes intensity and multipath interference strength.
Scene six: the mass parameter includes noise and multipath interference strength.
Scene seven: the mass parameter includes intensity, noise and multipath interference strength.
In above-mentioned scene four into scene seven, the radio can determine that the received signal is radio signals or interference signal by following methods:
Mode one: if any of described mass parameter of received signal parameter meets the condition of radio signals, the radio determines that the signal is radio signals；Otherwise, the radio determines that the signal is interference signal.
For example, if the signal that the comparison result of intensity is the signal is less than noise threshold greater than the noise that the comparison result of intensity threshold or noise is the signal, the radio determines that the signal is radio signals in scene four；Otherwise the radio determines that the signal is interference signal.
Mode two: if each parameter is all satisfied the condition of corresponding radio signals in the mass parameter of the received signal, the radio determines that the signal is radio signals；Otherwise, the radio determines that the signal is interference signal.
For example, if the signal that the comparison result of intensity is the signal is greater than intensity threshold, and the comparison result of noise is the noise of the signal less than noise threshold, then the radio determines that the signal is radio signals in scene four；Otherwise institute
It states radio and determines that the signal is interference signal.
By above method, the radio can determine the type of the signal by the mass parameter in the case where that can not determine that the received signal is interference signal or radio signals by bandwidth.
Based on the above-mentioned description to mass parameter it is found that intensity, the parameters such as noise and multipath interference strength can be used as the secondary cause that radio determines signal kinds, the priority of different parameters is different.Such as, when the bandwidth is greater than or equal to second bandwidth threshold, and when being less than or equal to first bandwidth threshold, the radio by the parameter of the first secondary cause (such as, above-mentioned intensity, at least one of noise and multipath interference strength parameter) determine that the signal is interference signal or radio signals, if the type of the signal can not be determined, the parameter (at least one parameter in above-mentioned parameter in addition to the parameter of the first secondary cause) for then continuing through the second secondary cause determines that the signal is interference signal or radio signals, until passing through the parameter of the last one secondary cause, determine the type of the radio signals.
Based on above description, it is the first secondary cause in intensity, interference parameter is under the scene of the second secondary cause, optionally, when the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, radio determines the type of the signal by following steps:
S104b: when the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the radio obtains the intensity of the signal.
S105: when the intensity is greater than the first intensity threshold, the radio determines that the signal is radio signals.
S106: when the intensity is less than the second intensity threshold, the radio determines that the signal is interference signal, wherein second intensity threshold is less than first intensity threshold.
Wherein, first intensity threshold, second intensity threshold specific application scenarios can be set according to.For example, first intensity threshold is set as 50dBuV, second intensity threshold is set as 20dBuV.It should be noted that the specific value of the first intensity threshold of the embodiment of the present application and second intensity threshold is not construed as limiting, subsequent embodiment is illustrated by taking above-mentioned value as an example.
Optionally, the method can with the following steps are included:
S107: when the intensity is greater than or equal to second intensity threshold and is less than or equal to first intensity threshold, the radio obtains the interference parameter of the signal, and the interference parameter includes at least one of the following: noise, multipath interference strength；
S108: when the interference parameter is less than interference parameter threshold value, the radio determines that the signal is radio signals.
Wherein the interference parameter threshold value can be specifically arranged according to specific application scenarios.Such as when the interference parameter includes noise, and the noise is USN, the threshold value in the interference parameter threshold value for USN setting is 15%；When the interference parameter includes multipath interference strength, and the multipath interference strength is WAM, the threshold value in the interference parameter threshold value for multipath interference strength setting is 15%.
It should be noted that the specific value of the embodiment of the present application interference parameter threshold value is not construed as limiting, subsequent embodiment is illustrated by taking above-mentioned value as an example.
S109: when the interference parameter is greater than or equal to the interference parameter threshold value, the radio determines that the signal is interference signal.
Pass through above method, the radio can be in the case where that can not determine that the received signal is interference signal or radio signals by bandwidth, by the above method, the radio can pass sequentially through the intensity of the signal, interference parameter determines the type of the signal.In this way, the radio can demodulate the signal so as to improving radio and obtain the quality of signal to be played, may finally improve the listening experience of user using high-quality signal as radio signals.
Using method provided by the embodiments of the present application, radio can the bandwidth of signal and setting based on the received bandwidth threshold
Comparison, determine the signal be radio signals.Since signal is in transmission process, although intensity is possible to change greatly, the bandwidth variation of signal is smaller.In addition, the bandwidth difference of radio signals and interference signal is larger, therefore, compared with the existing technology, radio judges received signal using the bandwidth of signal as the principal element for judging radio signals for radio signals in the method, and the radio reception effect of radio can be improved.
Based on above embodiments, the signal that the embodiment of the present application provides a kind of radio determines method example, as shown in fig.2, method includes the following steps:
S201: radio upon receipt of the signals, determines the bandwidth BW of the signal.
S202: as BW > 100kHz, the radio determines that the signal is radio signals.
S203: as BW < 50kHz, the radio determines that the signal is interference signal.
S204: as 50kHz≤BW≤100kHz, the radio obtains the intensity L of the signal.
S205: as L > 50dBuV, the radio determines that the signal is radio signals.
S206: as L < 20dBuV, the radio determines that the signal is interference signal.
S207: as 20dBuV≤L≤50dBuV, the radio obtains the USN and WAM of the signal.
S208: when USN < 15%, and when WAM < 15%, the radio determines that the signal is radio signals.
S209: when USN >=15% or WAM >=15%, the radio determines that the signal is interference signal.
By method provided by the embodiments of the present application, radio can determine the type of the signal received, improve the radio reception effect of the radio according to the bandwidth of signal.Further, in the situation for the type that can not determine the signal by bandwidth, the parameters such as intensity, USN and the WAM of signal can be continued through, determine the type of the signal.In this way, the radio can demodulate the signal so as to improving radio and obtain the quality of signal to be played, may finally improve the listening experience of user using high-quality signal as radio signals.Since compared with the existing technology, the bandwidth of signal is as the principal element for judging radio signals in the method, therefore the radio reception effect of radio can be improved in this method.
Based on above embodiments, the embodiment of the present application also provides the signals of another radio to determine method example, refering to shown in Fig. 3, in the method, in addition to step S302 and subsequent step S3021 and S3022, the step of other steps are in above-mentioned example shown in Fig. 2 in addition to step S202, is identical, therefore, can be with cross-reference, details are not described herein again.So step different from example shown in Fig. 2 are as follows:
S302: as BW > 100kHz, the radio obtains the intensity L of the signal.
S3021: as L > 30DBuV, the radio determines that the signal is radio signals.
S3022: as L≤30DBuV, the radio determines that the signal is interference signal.
Through the above steps, bandwidth can be met the bandwidth condition of radio signals by the radio, but the lower signal determining of intensity is interference signal, in this way, the radio can will meet the bandwidth condition of radio signals, and high-quality signal is as radio signals, demodulating the signal so as to further increasing radio obtains the quality of signal to be played, and the listening experience of user can be improved.
Based on above embodiments, the embodiment of the present application also provides a kind of radio, the signal that the radio in embodiment as shown in Figure 1-Figure 3 may be implemented in the radio determines method, refering to shown in Fig. 4, the radio 400 includes: receiving unit 401, processing unit 402, wherein
Receiving unit 401, for receiving signal；
Processing unit 402, for determining the bandwidth of the signal；And when the band is wider than the wide threshold value of first band, determine that the signal is radio signals.
Optionally, the processing unit 402, is also used to:
When the bandwidth is less than the second bandwidth threshold, determine that the signal is interference signal, wherein the second bandwidth threshold
Value is less than first bandwidth threshold.
Optionally, the processing unit 402, is also used to:
When the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the mass parameter of the signal is obtained, the mass parameter is used to indicate the quality of the signal；
According to the comparison result of the mass parameter of the signal and quality parameter thresholds, determine that the signal is radio signals.
Optionally, the mass parameter includes at least one of the following: intensity, noise and multipath interference strength；
When the mass parameter includes intensity, the comparison result includes that the intensity of the signal is greater than intensity threshold；Or
When the mass parameter includes noise, the comparison result includes that the noise of the signal is less than noise threshold；Or
When the mass parameter includes multipath interference strength, the comparison result includes that the multipath interference strength of the signal is less than multipath interference strength threshold value.
Optionally, the processing unit 402, is also used to:
When the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the intensity of the signal is obtained；
When the intensity is greater than the first intensity threshold, determine that the signal is radio signals；Or
When the intensity is less than the second intensity threshold, determine that the signal is interference signal, wherein second intensity threshold is less than first intensity threshold.
Optionally, the processing unit 402, is also used to:
When the intensity is greater than or equal to second intensity threshold and is less than or equal to first intensity threshold, the interference parameter of the signal is obtained, the interference parameter includes at least one of the following: noise, multipath interference strength；
When the interference parameter is less than interference parameter threshold value, determine that the signal is radio signals；Or
When the interference parameter is greater than or equal to the interference parameter threshold value, determine that the signal is interference signal.
The embodiment of the present application provides a kind of radio, the radio can signal based on the received bandwidth compared with the bandwidth threshold of setting, determine that the signal is radio signals.Since signal is in transmission process, although the intensity of signal is possible to change greatly, the bandwidth variation of signal is smaller.In addition, the bandwidth difference of radio signals and interference signal is larger, therefore, the radio can judge received signal for radio signals, the radio reception effect of the radio can be improved using the bandwidth of signal as the principal element for judging radio signals.
It should be noted that being schematically that only a kind of logical function partition, there may be another division manner in actual implementation to the division of unit in the embodiment of the present application.Each functional unit in embodiments herein can integrate in one processing unit, is also possible to each unit and physically exists alone, and can also be integrated in one unit with two or more units.Above-mentioned integrated unit both can take the form of hardware realization, can also realize in the form of software functional units.
Based on above embodiments, the embodiment of the present application also provides a kind of computer storage medium, software program is stored in the storage medium, which can realize that the signal for the radio that embodiment provides determines method when being read and executed by one or more processors.The computer storage medium may include: USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), the various media that can store program code such as random access memory (Random Access Memory, RAM), magnetic or disk.
Based on above embodiments, the embodiment of the present application also provides a kind of radio, the radio determines method for realizing the signal of radio as shown in FIG. 1 to FIG. 3, has the function of radio 400 as shown in Figure 4.As shown in fig.5, the radio includes: receiver 501, processor 502 and memory 503.Wherein, it is connected with each other between the receiver 501, the processor 502 and the memory 503.
Optionally, pass through 504 phase of bus between the receiver 501, the processor 502 and the memory 503
It connects.The bus 504 can be Peripheral Component Interconnect standard (peripheral component interconnect, PCI) bus or expanding the industrial standard structure (extended industry standard architecture, EISA) bus etc..The bus can be divided into address bus, data/address bus, control bus etc..Only to be indicated with a thick line in Fig. 4, it is not intended that an only bus or a type of bus convenient for indicating.
During the signal that the radio 500 states the radio in embodiment in realization determines method:
The receiver 501 is for receiving signal.It include receiving antenna in the receiver 501.
The processor 502 is used for when the band is wider than the wide threshold value of first band, determines that the signal is radio signals.
Optionally, the processor 502, is also used to:
When the bandwidth is less than the second bandwidth threshold, determine that the signal is interference signal, wherein second bandwidth threshold is less than first bandwidth threshold.
Optionally, the processor 502, is also used to:
When the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the mass parameter of the signal is obtained, the mass parameter is used to indicate the quality of the signal；
According to the comparison result of the mass parameter of the signal and quality parameter thresholds, determine that the signal is radio signals.
Optionally, the mass parameter includes at least one of the following: intensity, noise and multipath interference strength；
When the mass parameter includes intensity, the comparison result includes that the intensity of the signal is greater than intensity threshold；Or
When the mass parameter includes noise, the comparison result includes that the noise of the signal is less than noise threshold；Or
When the mass parameter includes multipath interference strength, the comparison result includes that the multipath interference strength of the signal is less than multipath interference strength threshold value.
Optionally, the processor 502, is also used to:
When the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the intensity of the signal is obtained；
When the intensity is greater than the first intensity threshold, determine that the signal is radio signals；Or
When the intensity is less than the second intensity threshold, determine that the signal is interference signal, wherein second intensity threshold is less than first intensity threshold.
Optionally, the processor 502, is also used to:
When the intensity is greater than or equal to second intensity threshold and is less than or equal to first intensity threshold, the interference parameter of the signal is obtained, the interference parameter includes at least one of the following: noise, multipath interference strength；
When the interference parameter is less than interference parameter threshold value, determine that the signal is radio signals；Or
When the interference parameter is greater than or equal to the interference parameter threshold value, determine that the signal is interference signal.
The memory 503, for storing application program etc..Specifically, application program may include program code, which includes computer operation instruction.Memory 503 may include random access memory (random access memory, RAM), it is also possible to further include nonvolatile memory (non-volatile memory), for example, at least a magnetic disk storage.Processor 502 executes the application program that memory 503 is stored, and above-mentioned function is realized, to realize that the signal of radio provided by the above embodiment determines method.
Optionally, the radio 500 further includes the components such as traditional various signal processors, earphone interface and loudspeaker, and for realizing the playing function of radio, details are not described herein again.
In conclusion the signal that the embodiment of the present application provides a kind of radio determines method and radio, in the method, radio can signal based on the received bandwidth compared with the bandwidth threshold of setting, determine that the signal is radio signals.Since signal is in transmission process, although the intensity of signal is possible to change greatly, the bandwidth variation of signal is smaller.Separately
Outside, the bandwidth difference of radio signals and interference signal is larger, therefore, compared with the existing technology, radio judges received signal using the bandwidth of signal as the principal element for judging radio signals for radio signals in method provided by the embodiments of the present application, and the radio reception effect of radio can be improved.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program product.Therefore, the form of complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application.Moreover, the form for the computer program product implemented in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) that one or more wherein includes computer usable program code can be used in the application.
The application is that reference is described according to the flowchart and/or the block diagram of the method for the embodiment of the present application, equipment (system) and computer program product.It should be understood that the combination of process and/or box in each flow and/or block and flowchart and/or the block diagram that can be realized by computer program instructions in flowchart and/or the block diagram.These computer program instructions be can provide to the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate a machine, so that generating by the instruction that computer or the processor of other programmable data processing devices execute for realizing the device for the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, to be able to guide in computer or other programmable data processing devices computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates the manufacture including command device, which realizes the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that series of operation steps are executed on a computer or other programmable device to generate computer implemented processing, thus the step of instruction executed on a computer or other programmable device is provided for realizing the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.
Obviously, those skilled in the art can carry out various modification and variations without departing from the range of the embodiment of the present application to the embodiment of the present application.If then the application is also intended to include these modifications and variations in this way, these modifications and variations of the embodiment of the present application belong within the scope of the claim of this application and its equivalent technologies.
Claims (19)
- A kind of signal of radio determines method characterized by comprisingRadio upon receipt of the signals, determines the bandwidth of the signal；When the band is wider than the wide threshold value of first band, the radio determines that the signal is radio signals.
- The method as described in claim 1, which is characterized in that the method also includes:When the bandwidth is less than the second bandwidth threshold, the radio determines that the signal is interference signal, wherein second bandwidth threshold is less than first bandwidth threshold.
- Method according to claim 2, which is characterized in that the method also includes:When the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the radio obtains the mass parameter of the signal, and the mass parameter is used to indicate the quality of the signal；The radio determines that the signal is radio signals according to the mass parameter of the signal and the comparison result of quality parameter thresholds.
- Method as claimed in claim 3, which is characterized in that the mass parameter includes at least one of the following: intensity, noise and multipath interference strength；When the mass parameter includes intensity, the comparison result includes that the intensity of the signal is greater than intensity threshold；OrWhen the mass parameter includes noise, the comparison result includes that the noise of the signal is less than noise threshold；OrWhen the mass parameter includes multipath interference strength, the comparison result includes that the multipath interference strength of the signal is less than multipath interference strength threshold value.
- Method according to claim 2, which is characterized in that the method also includes:When the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the radio obtains the intensity of the signal；When the intensity is greater than the first intensity threshold, the radio determines that the signal is radio signals；OrWhen the intensity is less than the second intensity threshold, the radio determines that the signal is interference signal, wherein second intensity threshold is less than first intensity threshold.
- Method as claimed in claim 5, which is characterized in that the method also includes:When the intensity is greater than or equal to second intensity threshold and is less than or equal to first intensity threshold, the radio obtains the interference parameter of the signal, and the interference parameter includes at least one of the following: noise, multipath interference strength；When the interference parameter is less than interference parameter threshold value, the radio determines that the signal is radio signals；OrWhen the interference parameter is greater than or equal to the interference parameter threshold value, the radio determines that the signal is interference signal.
- A kind of radio characterized by comprisingReceiving unit, for receiving signal；Processing unit, for determining the bandwidth of the signal；And when the band is wider than the wide threshold value of first band, determine that the signal is radio signals.
- Radio as claimed in claim 7, which is characterized in that the processing unit is also used to:When the bandwidth is less than the second bandwidth threshold, determine that the signal is interference signal, wherein second bandwidth threshold is less than first bandwidth threshold.
- Radio as claimed in claim 8, which is characterized in that the processing unit is also used to:When the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the mass parameter of the signal is obtained, the mass parameter is used to indicate the quality of the signal；According to the comparison result of the mass parameter of the signal and quality parameter thresholds, determine that the signal is radio signals.
- Radio as claimed in claim 9, which is characterized in that the mass parameter includes at least one of the following: intensity, noise and multipath interference strength；When the mass parameter includes intensity, the comparison result includes that the intensity of the signal is greater than intensity threshold；OrWhen the mass parameter includes noise, the comparison result includes that the noise of the signal is less than noise threshold；OrWhen the mass parameter includes multipath interference strength, the comparison result includes that the multipath interference strength of the signal is less than multipath interference strength threshold value.
- Radio as claimed in claim 8, which is characterized in that the processing unit is also used to:When the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the intensity of the signal is obtained；When the intensity is greater than the first intensity threshold, determine that the signal is radio signals；OrWhen the intensity is less than the second intensity threshold, determine that the signal is interference signal, wherein second intensity threshold is less than first intensity threshold.
- Radio as claimed in claim 11, which is characterized in that the processing unit is also used to:When the intensity is greater than or equal to second intensity threshold and is less than or equal to first intensity threshold, the interference parameter of the signal is obtained, the interference parameter includes at least one of the following: noise, multipath interference strength；When the interference parameter is less than interference parameter threshold value, determine that the signal is radio signals；OrWhen the interference parameter is greater than or equal to the interference parameter threshold value, determine that the signal is interference signal.
- A kind of radio characterized by comprisingReceiver, for receiving signal；Memory, for storing program instruction；Processor, for calling the described program instruction of storage in the memory, execution:Determine the bandwidth of the signal；When the band is wider than the wide threshold value of first band, determine that the signal is radio signals.
- Radio as claimed in claim 13, which is characterized in that the processor is also used to:When the bandwidth is less than the second bandwidth threshold, determine that the signal is interference signal, wherein second bandwidth threshold is less than first bandwidth threshold.
- Radio as claimed in claim 14, which is characterized in that the processor is also used to:When the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the mass parameter of the signal is obtained, the mass parameter is used to indicate the quality of the signal；According to the comparison result of the mass parameter of the signal and quality parameter thresholds, determine that the signal is radio signals.
- Radio as claimed in claim 15, which is characterized in that the mass parameter includes at least one of the following: intensity, noise and multipath interference strength；When the mass parameter includes intensity, the comparison result includes that the intensity of the signal is greater than intensity threshold；OrWhen the mass parameter includes noise, the comparison result includes that the noise of the signal is less than noise threshold；OrWhen the mass parameter includes multipath interference strength, the comparison result includes that the multipath interference strength of the signal is less than multipath interference strength threshold value.
- Radio as claimed in claim 14, which is characterized in that the processor is also used to:When the bandwidth is greater than or equal to second bandwidth threshold and is less than or equal to first bandwidth threshold, the intensity of the signal is obtained；When the intensity is greater than the first intensity threshold, determine that the signal is radio signals；OrWhen the intensity is less than the second intensity threshold, determine that the signal is interference signal, wherein second intensity threshold is less than first intensity threshold.
- Radio as claimed in claim 17, which is characterized in that the processor is also used to:When the intensity is greater than or equal to second intensity threshold and is less than or equal to first intensity threshold, the interference parameter of the signal is obtained, the interference parameter includes at least one of the following: noise, multipath interference strength；When the interference parameter is less than interference parameter threshold value, determine that the signal is radio signals；OrWhen the interference parameter is greater than or equal to the interference parameter threshold value, determine that the signal is interference signal.
- A kind of computer storage medium, which is characterized in that software program is stored in the computer readable storage medium, the software program can realize method described in any one of claims 1-6 when being read and executed by one or more processors.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017100016713 | 2017-01-03 | ||
| CN201710001671 | 2017-01-03 | ||
| PCT/CN2017/080966 WO2018126553A1 (en) | 2017-01-03 | 2017-04-18 | Method for determining signal of radio receiver and radio receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108702165A true CN108702165A (en) | 2018-10-23 |
| CN108702165B CN108702165B (en) | 2020-10-27 |
Family
ID=62788973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780009086.6A Active CN108702165B (en) | 2017-01-03 | 2017-04-18 | Radio signal determination method and radio |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108702165B (en) |
| WO (1) | WO2018126553A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112235001B (en) * | 2019-07-15 | 2022-03-25 | 广州汽车集团股份有限公司 | Vehicle-mounted radio noise suppression method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101953078A (en) * | 2008-02-04 | 2011-01-19 | 天工方案公司 | Be used for system and method in detection of radio receiver radio station and search |
| CN104092502A (en) * | 2014-06-26 | 2014-10-08 | 青岛海信移动通信技术股份有限公司 | Method and device for radio station searching |
| CN105119674A (en) * | 2015-07-16 | 2015-12-02 | 上海斐讯数据通信技术有限公司 | Broadcasting station searching method and FM (frequency modulation) receiver |
| CN105915307A (en) * | 2016-04-13 | 2016-08-31 | 武汉海微科技有限公司 | Method for realizing interference resistance of on-vehicle radio set |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376004B (en) * | 2014-07-31 | 2018-07-10 | 展讯通信（上海）有限公司 | A kind of adaptive tuning device and method and FM receiver |
-
2017
- 2017-04-18 WO PCT/CN2017/080966 patent/WO2018126553A1/en active Application Filing
- 2017-04-18 CN CN201780009086.6A patent/CN108702165B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101953078A (en) * | 2008-02-04 | 2011-01-19 | 天工方案公司 | Be used for system and method in detection of radio receiver radio station and search |
| CN104092502A (en) * | 2014-06-26 | 2014-10-08 | 青岛海信移动通信技术股份有限公司 | Method and device for radio station searching |
| CN105119674A (en) * | 2015-07-16 | 2015-12-02 | 上海斐讯数据通信技术有限公司 | Broadcasting station searching method and FM (frequency modulation) receiver |
| CN105915307A (en) * | 2016-04-13 | 2016-08-31 | 武汉海微科技有限公司 | Method for realizing interference resistance of on-vehicle radio set |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108702165B (en) | 2020-10-27 |
| WO2018126553A1 (en) | 2018-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2491743C2 (en) | Method and system to detect noise from adjacent channels for broadband wireless access based on ofdm/ofdma | |
| US7983222B2 (en) | Wireless channel selection techniques and devices | |
| CN103404039B (en) | Reserve frequency in radio switches, the method for automatic search and automatic tuning to one frequency | |
| CN102124514A (en) | System and method for data reception and transmission in audible frequency band | |
| KR101995651B1 (en) | Method for determining target operating frequency of stylus, and touch screen and stylus thereof | |
| CN105284067A (en) | Evaluation and acoustic emission of audio broadcasting signals in a vehicle | |
| US8712354B2 (en) | Radio transmitter and radio receiver with channel condition assessment | |
| US8369813B2 (en) | Apparatus and method for reducing cross-talk between audio channels in a mobile terminal | |
| CN108702165A (en) | A kind of signal of radio determines method and radio | |
| TW200939675A (en) | Method and apparatus for searching for or tuning to one or more radio stations with minimum interaction with host processor | |
| WO2014190882A1 (en) | Method and apparatus for setting pa blanking working mode | |
| US9706501B2 (en) | Communication apparatus and control method | |
| US8818306B2 (en) | Wireless communication device | |
| WO2014000575A1 (en) | Self-adaptive method, system and device for audio communication modulation modes, and electronic signature tool | |
| CN108200142A (en) | A kind of music method for pushing and sound-box device | |
| US20160054974A1 (en) | Radio Device Capable of Switching Play Message Automatically | |
| JP2009267780A (en) | Multipath noise reduction device, fm receiver, and multipath noise reduction method | |
| US7072622B2 (en) | Signal processing method for a walkie-talkie device | |
| CN113965225B (en) | Power distribution method for incoherent underwater acoustic FSK frequency hopping communication system | |
| US9628892B2 (en) | Method of determining operation mode of hearing device and hearing device | |
| JP2012156624A (en) | Wireless microphone, receiving device, wireless microphone system and voice signal transmission method | |
| JP2005198092A (en) | Receiver | |
| JP5310645B2 (en) | Radio device and operation clock frequency control method of radio device | |
| JP4821665B2 (en) | Receiving apparatus and method | |
| JPH0430839Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |