CN105827339A - Method and device for searching radio station - Google Patents
Method and device for searching radio station Download PDFInfo
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- CN105827339A CN105827339A CN201610152005.5A CN201610152005A CN105827339A CN 105827339 A CN105827339 A CN 105827339A CN 201610152005 A CN201610152005 A CN 201610152005A CN 105827339 A CN105827339 A CN 105827339A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
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- Quality & Reliability (AREA)
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Abstract
The invention discloses a method and a device for searching a radio station. The method comprises steps: radio waves of the radio station are searched; addition and subtraction operation is carried out on the frequency of the radio waves and a stepper frequency, and a detection frequency is obtained; a detection value for the radio waves whose frequency is the detection frequency is acquired; if the detection value is smaller than a threshold value, radio waves of the radio station are searched continuously. The radio station searching device comprises a searching unit for searching the radio waves of the radio station, a processing unit for carrying out addition and subtraction operation on the frequency of the radio waves and the stepper frequency to obtain the detection frequency, a detection unit for acquiring the detection value for the radio waves whose frequency is the detection frequency and notifying the searching unit to continuously search the radio waves of the radio station when the detection value is smaller than the threshold value. While a radio broadcasting station is normally caught, listening to a false station is reduced.
Description
The application is the divisional application of the Chinese invention patent application 201410289858.4 of invention entitled " a kind of radio station searching method and the device " that propose on June 26th, 2014.
Technical field
The present invention relates to radio communication technology, be specifically related to the searching method of a kind of radio broadcast station and the searcher of radio broadcast station.
Background technology
Radio, as a kind of radio wave reception device, receives and demodulates in radio wave the signals such as the news of carrying, music, enrich daily life.Up to the present, a lot of intelligent electronic devices including radio, mobile phone all possess function of radio receiver, provide wireless broadcast service for mass audience.
Under full-automatic tuning, semi-automatic tuning pattern, antenna receives the radio wave of different frequency from space, and the radio wave that antenna is received by FM circuit is demodulated, and to obtain the signal of carrying in radio wave, and exports this signal.
In actual application, after the radio wave that intelligent electronic device demodulation antenna receives often there is mixed and disorderly noise in the acoustical signal of output, and the transmitting at this point for demodulated radio wave is originated, in the industry the most false platform.
The radio wave that antenna receives has multiple source, the radio wave that the radio wave launched including broadcasting station and non-broadcasting radio station are launched, and the radio wave that wherein non-broadcasting radio station is launched mainly includes the radio wave that intelligent electronic device itself is launched.As a example by mobile phone, mobile phone can be the receiving terminal of radio wave, it is also possible to be the transmitting terminal of radio wave.The display screen of mobile phone, touch screen, memorizer, DC-DC power source etc. can become signal disturbing source, if the higher hamonic wave that these interference sources produce is fallen in frequency modulation (FM) frequency range (76～108MHz) by modes such as conduction or radiation, will be received by the antenna and demodulate, thus create false platform phenomenon.
The reception of false platform radio wave is disturbed user and normally listens to radio broadcasting, bring poor experience for user when using function of radio receiver.
Summary of the invention
The embodiment provides the method and device of a kind of broadcasting station search, while realizing radio broadcast station is normally listened to, reduce and false platform is listened to.
In order to realize foregoing invention purpose, embodiments of the invention adopt the following technical scheme that
On the one hand, The embodiment provides a kind of radio station searching method, including
The radio wave in search radio station；
Carry out being added and additive operation with step frequency by the frequency of radio wave, obtain detecting frequency；
Obtain the detected value of the radio wave that frequency is detection frequency；
When detected value is less than threshold value, continue search for the radio wave in radio station.
Preferably, method also includes, when detected value is more than or equal to threshold value, solving the radio wave of radio station adjustment.
Preferably, method search radio station radio wave after, also include generate station radio wave frequency record；
After continuing search for the radio wave in radio station, also include deleting station radio wave frequency record.
Preferably, method solve radio station adjustment radio wave after, also include generate station list.
On the other hand, The embodiment provides a kind of broadcasting station search device, including
Search unit, for searching for the radio wave in radio station；
Processing unit, for carrying out being added and additive operation with step frequency by the frequency of radio wave, obtains detecting frequency；
Detector unit, for obtaining the detected value of the radio wave that frequency is detection frequency；
Processing unit is additionally operable to when detected value is less than threshold value, and notice search unit continues search for the radio wave in radio station.
Preferably, device also includes signal output unit, and signal output unit is used for when detected value is more than or equal to threshold value, the radio wave solving radio station adjustment the information of the radio wave carried exporting radio station.
Preferably, search unit is additionally operable to, and generates station radio wave frequency record after the radio wave in search radio station；
Processing unit is additionally operable to, and deletes station radio wave frequency record after the radio wave continuing search for radio station.
Preferably, search unit is additionally operable to after solving the information of the radio wave of radio station adjustment the radio wave carried that exports radio station generate station list.
Embodiments of the invention provide a kind of radio station searching method and device,
Radio station searching method includes the radio wave searching for radio station；
Carry out being added and additive operation with step frequency by the frequency of radio wave, obtain detecting frequency；
Obtain the detected value of the radio wave that frequency is detection frequency；
When detected value is less than threshold value, continue search for the radio wave in radio station.
The embodiment of the present invention provides a kind of broadcasting station search device, including
Search unit, for searching for the radio wave in radio station；
Processing unit, for carrying out being added and additive operation with step frequency by the frequency of radio wave, obtains detecting frequency；
Detector unit, for obtaining the detected value of the radio wave that frequency is detection frequency；
Processing unit is additionally operable to when detected value is less than threshold value, and notice search unit continues search for the radio wave in radio station.
Radio station has certain spectrum width.The radio wave in the radio station searched, its frequency is in the spectrum width of radio station, and the radio wave of this frequency can produce the strongest detected value, and common detected value includes signal intensity and Signal to Interference plus Noise Ratio.
During completing the invention, inventor finds, for true platform, its spectrum width is the twice of step frequency, i.e. carries out forward, backward centered by station radio wave frequency after one times of stepping in the range of still in the spectrum width in radio station；When the twice of spectrum width deficiency step frequency, having exceeded the spectrum width scope in radio station after i.e. carrying out one times of stepping forward, backward centered by station radio wave frequency, this is false platform.
In the range of the frequency of radio wave is in the spectrum width in radio station, the detected value that this radio wave produces is higher；When the frequency of radio wave is beyond radio station spectrum width scope, and the detected value of this radio wave substantially reduces, and may determine that threshold value between higher detected value and relatively low detected value.
In prior art, after the radio wave of complete pair of stations is searched for, directly the radio broadcasting signal of carrying in this radio wave is demodulated and exports, when the radio wave searched is sent by false platform, and what now user heard is mixed and disorderly noise.
In the embodiment of the present invention, after the radio wave searching radio station, whether meet, by the spectrum width judging this radio station, the spectrum width that relevant criterion sets, thus judge whether this radio station is false platform, if false platform, then continue search for the radio wave in radio station.
Specifically, the radio wave in search radio station, carry out being added and additive operation with step frequency by the frequency of radio wave, centered by station radio wave frequency, i.e. carry out one times of stepping forward, backward, obtain detecting frequency, if the detection frequency obtained after stepping is beyond the spectrum width in radio station, frequency is that the detected value of the radio wave generation of this detection frequency is relatively low.By comparing with threshold value, when detected value is less than threshold value, determines that this radio station is false platform, now continue search for the radio wave in radio station, it is to avoid the false platform of output, to improve the experience of user.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
A kind of radio station searching method schematic flow sheet that Fig. 1 provides for the embodiment of the present invention；
The another kind of radio station searching method schematic flow sheet that Fig. 2 provides for the embodiment of the present invention；
The another kind of radio station searching method schematic flow sheet that Fig. 3 provides for the embodiment of the present invention；
The another kind of radio station searching method schematic flow sheet that Fig. 4 provides for the embodiment of the present invention；
Fig. 5 is radio wave frequency table corresponding with radio wave signal intensity in the embodiment of the present invention；
Fig. 6 be in the embodiment of the present invention radio wave frequency and radio wave signal with interference plus noise than corresponding table；
A kind of broadcasting station search apparatus structure schematic diagram that Fig. 7 provides for the embodiment of the present invention.
Detailed description of the invention
For making objects and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
A kind of radio station searching method schematic flow sheet that Fig. 1 provides for the embodiment of the present invention, as it is shown in figure 1, the radio station searching method of the embodiment of the present invention may comprise steps of:
101, the radio wave in radio station is searched for；
Specifically, the method of the radio wave in search radio station can be auto-manual system broadcasting station search, it can also be full rotation type broadcasting station search, the radio station searched can be a radio station, it can also be multiple radio station, to the process in the radio station searched repeat be the process to the multiple radio station searched, as a example by this sentences the radio station that frequency is 98MHz.
102, carry out being added and additive operation with step frequency by the frequency of radio wave, obtain detecting frequency；
Specifically, the determination of step frequency is according to the relevant criterion in area, different regions may be different about the standard of step frequency, the step frequency of such as China is 0.1MHz according to the relevant regulations of GB/T4311-2000 " metric wave frequency modulation broadcasting technical specification ", the step frequency of the U.S. is 0.2MHz, and the step frequency in Europe is 0.05MHz.Step frequency herein takes 0.1MHz by China's standard, and the detection frequency obtained is 97.9MHz and 98.1MHz.
103, the detected value of the radio wave that frequency is detection frequency is obtained；
The detected value of common radio wave includes signal intensity and Signal to Interference plus Noise Ratio, the method of the signal intensity or Signal to Interference plus Noise Ratio that obtain radio wave in radio equipment has multiple, and current radio equipment hardware can support the signal intensity of radio wave or detection the output under the calling of software automatically of Signal to Interference plus Noise Ratio.
104, when detected value is less than threshold value, the radio wave in radio station is continued search for.
Exist in a large number and varied due to signal emitting-source so that realistic space exists the radio wave of various frequency.According to area relevant criterion, frequency modulation radio electric wave has specific spectral range, and frequency of radio station has certain spectrum width.As a example by China, relevant regulations according to GB/T4311-2000 " metric wave frequency modulation broadcasting technical specification ", the wavelength band in frequency modulation (FM) the stereophonic broadcast radio station of China is 87～108MHz, radio station is set by the frequency interval of 0.1MHz, practice is formed the radio station spectrum width with 0.2MHz as width.
The radio wave that frequency is in the spectrum width of radio station has stronger energy, it is possible to produce higher signal intensity or Signal to Interference plus Noise Ratio；
Frequency has relatively low energy beyond the radio wave in the spectrum width of radio station, it is possible to produce relatively low signal intensity or Signal to Interference plus Noise Ratio.
Signal strength threshold value is may determine that between higher signal intensity and relatively low signal intensity, may determine that Signal to Interference plus Noise Ratio threshold value between higher Signal to Interference plus Noise Ratio and relatively low Signal to Interference plus Noise Ratio, make a distinction beyond the radio wave of frequency of radio station width with frequency frequency being in the radio wave of radio station spectrum width.
The generation of signal intensity or Signal to Interference plus Noise Ratio is not only relevant with radio wave, and relevant to the particular hardware receiving radio wave, and this makes in concrete hardware environment, it may be determined that threshold value.
Intelligent electronic device itself is main false platform source, and in actual environment, a certain intelligent electronic device uses step 101, the method for 102,103 to carry out FAS full automatic search radio station, the signal intensity that the frequency of radio station, detection frequency and the frequency that obtain are corresponding.The radio station searched is demodulated and exports, can learn which is false platform, the signal strength values of frequency detecting point of false platform be compared with the signal strength values of the frequency detecting point of true platform, i.e. can determine that threshold value.
nullConcrete，The table corresponding with radio wave signal intensity of radio wave frequency as shown in Figure 5，Frequency 86.4MHz、96.0MHz、102.4MHz、105.6MHz is the frequency of false platform，Frequency 89.7MHz、95.2MHz、98.6MHz、104.1MHz is the frequency of true platform，The signal intensity of the radio wave that the detection frequency of true platform is corresponding is between-90dBm and-85dBm，The signal intensity of the radio wave that the detection frequency of two false platforms is corresponding always has a signal intensity less than-90dBm，Now-90dBm is the threshold value of signal intensity，Certainly threshold value is not limited to-90dBm，Exceed-100dBm、Any one signal intensity of below-90dBm can be all signal strength threshold value.
nullIn like manner，Radio wave frequency as shown in Figure 6 and radio wave signal with interference plus noise than corresponding table，Frequency 86.4MHz、96.0MHz、102.4MHz、105.6MHz is the frequency of false platform，Frequency 89.7MHz、95.2MHz、98.6MHz、104.1MHz is the frequency of true platform，The Signal to Interference plus Noise Ratio (signal to noise ratio) of the radio wave that the detection frequency of true platform is corresponding is between 9dBm and 18dBm，The signal intensity of the radio wave that the detection frequency of two false platforms is corresponding always has a signal intensity less than 9dBm，Now 9dBm is the threshold value of signal intensity，Certainly threshold value is not limited to 9dBm，More than 0dBm、Any one Signal to Interference plus Noise Ratio of below 9dBm can be all Signal to Interference plus Noise Ratio threshold value.
Owing to the intelligent electronic device hardware configuration of same model is identical, so the signal strength threshold value of an electronic equipment or Signal to Interference plus Noise Ratio threshold value are applicable to all electronic equipments with this electronic equipment same model.
Herein, for detection frequency 97.9MHz, its signal strength values is-88dBm, and its Signal to Interference plus Noise Ratio is 15,
For detection frequency 98.1MHz, its signal strength values is-100dBm, and its Signal to Interference plus Noise Ratio is 1,
And in specific search hardware, signal strength threshold value is-95dBm, and Signal to Interference plus Noise Ratio threshold value is 2.
When the signal strength values-100dBm of detection frequency is less than signal strength threshold value-95dBm, when Signal to Interference plus Noise Ratio 1 is less than Signal to Interference plus Noise Ratio threshold value 2, now continue search for radio station.
Radio station has certain spectrum width.The radio wave in the radio station searched, its frequency is in the spectrum width of radio station, and the radio wave of this frequency can produce the strongest detected value, and common detected value includes signal intensity and Signal to Interference plus Noise Ratio.
During completing the invention, inventor finds, for true platform, its spectrum width is the twice of step frequency, i.e. carries out forward, backward centered by station radio wave frequency after one times of stepping in the range of still in the spectrum width in radio station；When the twice of spectrum width deficiency step frequency, having exceeded the spectrum width scope in radio station after i.e. carrying out one times of stepping forward, backward centered by station radio wave frequency, this is false platform.
In the range of the frequency of radio wave is in the spectrum width in radio station, the detected value that this radio wave produces is higher；When the frequency of radio wave is beyond radio station spectrum width scope, and the detected value of this radio wave substantially reduces, and may determine that threshold value between higher detected value and relatively low detected value.
In prior art, after the radio wave of complete pair of stations is searched for, directly the radio broadcasting signal of carrying in this radio wave is demodulated and exports, when the radio wave searched is sent by false platform, and what now user heard is mixed and disorderly noise.
In the embodiment of the present invention, after the radio wave searching radio station, whether meet, by the spectrum width judging this radio station, the spectrum width that relevant criterion sets, thus judge whether this radio station is false platform, if false platform, then continue search for the radio wave in radio station.
nullSpecifically，The radio wave in search radio station，Carry out being added and additive operation with step frequency by the frequency of radio wave，I.e. centered by station radio wave frequency forward、To each stepping 0.1MHz，Obtain two detection frequencies 97.9MHz and 98.1MHz，If the detection frequency obtained after stepping is beyond the spectrum width scope in radio station，Frequency be this detection frequency radio wave produce signal intensity or Signal to Interference plus Noise Ratio relatively low，For detection frequency 97.9MHz，The signal strength values of the radio wave of this frequency is-88dBm，The Signal to Interference plus Noise Ratio of the radio wave of this frequency is 15，For detection frequency 98.1MHz，The signal strength values of the radio wave of this frequency is-100dBm，The Signal to Interference plus Noise Ratio of the radio wave of this frequency is 1，Signal strength threshold value is-95dBm，Signal to Interference plus Noise Ratio threshold value is 2.By comparing with threshold value, when the signal strength values-100dBm detecting frequency is less than Signal to Interference plus Noise Ratio threshold value 2 less than signal strength threshold value-95dBm or Signal to Interference plus Noise Ratio 1, determine that this radio station is false platform, now continue search for the radio wave in radio station, avoid exporting false platform, to improve the experience of user.
The schematic flow sheet of the another kind of radio station searching method that Fig. 2 provides for the embodiment of the present invention.As in figure 2 it is shown, a kind of radio station searching method that the embodiment of the present invention provides includes:
201, the radio wave in radio station is searched for；
Specifically, the method of the radio wave in search radio station can be auto-manual system broadcasting station search, it can also be full rotation type broadcasting station search, the radio station searched can be a radio station, it can also be multiple radio station, to the process in the radio station searched repeat be the process to the multiple radio station searched, as a example by this sentences the radio station that frequency is 98.6MHz.
202, carry out being added and additive operation with step frequency by the frequency of radio wave, obtain detecting frequency；
Specifically, the determination of step frequency is according to the relevant criterion in area, different regions may be different about the standard of step frequency, the step frequency of such as China is 0.1MHz according to the relevant regulations of GB/T4311-2000 " metric wave frequency modulation broadcasting technical specification ", the step frequency of the U.S. is 0.2MHz, the step frequency in Europe is 0.05MHz, and step frequency herein takes 0.1MHz by China's standard, and the detection frequency obtained is 98.5MHz and 98.7MHz.
203, the detected value of the radio wave that frequency is detection frequency is obtained；
The detected value of common radio wave includes signal intensity and Signal to Interference plus Noise Ratio, the method of the signal intensity or Signal to Interference plus Noise Ratio that obtain radio wave in radio equipment has multiple, and current radio equipment hardware can support the signal intensity of radio wave or detection the output under the calling of software automatically of Signal to Interference plus Noise Ratio.
204, when detected value is more than or equal to threshold value, the radio wave of radio station adjustment is solved.
Exist in a large number and varied due to signal emitting-source so that realistic space exists the radio wave of various frequency.According to area relevant criterion, frequency modulation radio electric wave has specific spectral range, and frequency of radio station has certain spectrum width.As a example by China, relevant regulations according to GB/T4311-2000 " metric wave frequency modulation broadcasting technical specification ", the wavelength band in frequency modulation (FM) the stereophonic broadcast radio station of China is 87～108MHz, radio station is set by the frequency interval of 0.1MHz, practice is formed the radio station spectrum width with 0.2MHz as width.
The radio wave that frequency is in the spectrum width of radio station has stronger energy, it is possible to produce higher signal intensity or Signal to Interference plus Noise Ratio；
Frequency has relatively low energy beyond the radio wave in the spectrum width of radio station, it is possible to produce relatively low signal intensity or Signal to Interference plus Noise Ratio.
Signal strength threshold value is may determine that between higher signal intensity and relatively low signal intensity, may determine that Signal to Interference plus Noise Ratio threshold value between higher Signal to Interference plus Noise Ratio and relatively low Signal to Interference plus Noise Ratio, make a distinction beyond the radio wave of frequency of radio station width with frequency frequency being in the radio wave of radio station spectrum width.
The generation of signal intensity or Signal to Interference plus Noise Ratio is not only relevant with radio wave, and relevant to the particular hardware receiving radio wave, and this makes in concrete hardware environment, it may be determined that threshold value.
Intelligent electronic device itself is main false platform source, and in actual environment, a certain intelligent electronic device uses step 201, the method for 202,203 to carry out FAS full automatic search radio station, the signal intensity that the frequency of radio station, detection frequency and the frequency that obtain are corresponding.The radio station searched is demodulated and exports, can learn which is false platform, the signal strength values of frequency detecting point of false platform be compared with the signal strength values of the frequency detecting point of true platform, i.e. can determine that threshold value.
nullConcrete，The table corresponding with radio wave signal intensity of radio wave frequency as shown in Figure 5，Frequency 86.4MHz、96.0MHz、102.4MHz、105.6MHz is the frequency of false platform，Frequency 89.7MHz、95.2MHz、98.6MHz、104.1MHz is the frequency of true platform，The signal intensity of the radio wave that the detection frequency of true platform is corresponding is between-90dBm and-85dBm，The signal intensity of the radio wave that the detection frequency of two false platforms is corresponding always has a signal intensity less than-90dBm，Now-90dBm is the threshold value of signal intensity，Certainly threshold value is not limited to-90dBm，Exceed-100dBm、Any one signal intensity of below-90dBm can be all signal strength threshold value.
nullIn like manner，Radio wave frequency as shown in Figure 6 and radio wave signal with interference plus noise than corresponding table，Frequency 86.4MHz、96.0MHz、102.4MHz、105.6MHz is the frequency of false platform，Frequency 89.7MHz、95.2MHz、98.6MHz、104.1MHz is the frequency of true platform，The Signal to Interference plus Noise Ratio (signal to noise ratio) of the radio wave that the detection frequency of true platform is corresponding is between 9dBm and 18dBm，The signal intensity of the radio wave that the detection frequency of two false platforms is corresponding always has a signal intensity less than 9dBm，Now 9dBm is the threshold value of signal intensity，Certainly threshold value is not limited to 9dBm，More than 0dBm、Any one Signal to Interference plus Noise Ratio of below 9dBm can be all Signal to Interference plus Noise Ratio threshold value.
Herein, for detection frequency 98.5MHz, its signal strength values is-86dBm, and its Signal to Interference plus Noise Ratio is 13,
For detection frequency 98.7MHz, its signal strength values is-89dBm, and its Signal to Interference plus Noise Ratio is 18,
And in specific search hardware, signal strength threshold value is-95dBm, and Signal to Interference plus Noise Ratio threshold value is 2.
Owing to the intelligent electronic device hardware configuration of same model is identical, so the signal strength threshold value of an electronic equipment or Signal to Interference plus Noise Ratio threshold value are applicable to all electronic equipments with this electronic equipment same model.
When signal strength values-the 86dBm ,-89dBm of detection frequency is more than or equal to signal strength threshold value-95dBm, when Signal to Interference plus Noise Ratio 13,18 is more than or equal to Signal to Interference plus Noise Ratio threshold value 2, now solve the radio wave of radio station adjustment.
Radio station has certain spectrum width.The radio wave in the radio station searched, its frequency is in the spectrum width of radio station, and the radio wave of this frequency can produce the strongest detected value, and common detected value includes signal intensity and Signal to Interference plus Noise Ratio.
During completing the invention, inventor finds, for true platform, its spectrum width is the twice of step frequency, i.e. carries out forward, backward centered by station radio wave frequency after one times of stepping in the range of still in the spectrum width in radio station；When the twice of spectrum width deficiency step frequency, having exceeded the spectrum width scope in radio station after i.e. carrying out one times of stepping forward, backward centered by station radio wave frequency, this is false platform.
In the range of the frequency of radio wave is in the spectrum width in radio station, the detected value that this radio wave produces is higher；When the frequency of radio wave is beyond radio station spectrum width scope, and the detected value of this radio wave substantially reduces, and may determine that threshold value between higher detected value and relatively low detected value.
In prior art, after the radio wave of complete pair of stations is searched for, directly the radio broadcasting signal of carrying in this radio wave is demodulated and exports, when the radio wave searched is sent by false platform, and what now user heard is mixed and disorderly noise.
In the embodiment of the present invention, after the radio wave searching radio station, whether meet, by the spectrum width judging this radio station, the spectrum width that relevant criterion sets, thus judge whether this radio station is false platform, if not false platform, then solve the radio wave of radio station adjustment.
nullSpecifically，The radio wave in search radio station，Carry out being added and additive operation with step frequency by the frequency of radio wave，I.e. centered by station radio wave frequency forward、To each stepping 0.1MHz，Obtain two detection frequencies 98.5MHz and 98.7MHz，For detection frequency 98.5MHz，The signal strength values of the radio wave of this frequency is-86dBm，The Signal to Interference plus Noise Ratio of the radio wave of this frequency is 13，For detection frequency 98.7MHz，The signal strength values of the radio wave of this frequency is-89dBm，The Signal to Interference plus Noise Ratio of the radio wave of this frequency is 18，And in specific search hardware，Signal strength threshold value is-95dBm，Signal to Interference plus Noise Ratio threshold value is 2，When the radio wave searched is sent by true platform，In the range of two the detection frequencies obtained after stepping are in the spectrum width in radio station，Frequency be this detection frequency radio wave produce signal intensity or signal higher with interference plus noise.By comparing with the threshold value of signal intensity or Signal to Interference plus Noise Ratio, when signal strength values-the 86dBm ,-89dBm of detection frequency is more than or equal to signal strength threshold value-95dBm, when Signal to Interference plus Noise Ratio 13,18 is more than or equal to Signal to Interference plus Noise Ratio threshold value 2, this radio station is true platform, now solve the radio wave of radio station adjustment, obtain the information of the radio wave carried in radio station, it is achieved radio station is listened to.
The schematic flow sheet of the another kind of radio station searching method that Fig. 3 provides for the embodiment of the present invention.As it is shown on figure 3, a kind of radio station searching method that the embodiment of the present invention provides includes:
301, the radio wave in radio station is searched for；
Specifically, the method of the radio wave in search radio station can be auto-manual system broadcasting station search, it can also be full rotation type broadcasting station search, the radio station searched can be a radio station, can also be multiple radio station, to the process in the radio station searched repeat be the process to the multiple radio station searched.
302, station radio wave frequency record is generated；
Specifically, the station radio wave frequency that record searches, when the radio station searched is one, the frequency in one radio station of record, when the radio station searched is multiple, records the frequency in multiple radio station, station radio wave frequency record can be a temporary value, it is also possible to be a channel list.
303, carry out being added and additive operation with step frequency by the frequency of radio wave, obtain detecting frequency；
Specifically, the determination of step frequency is according to the relevant criterion in area, different regions may be different about the standard of step frequency, the step frequency of such as China is 0.1MHz according to the relevant regulations of GB/T4311-2000 " metric wave frequency modulation broadcasting technical specification ", the step frequency of the U.S. is 0.2MHz, and the step frequency in Europe is 0.05MHz.
304, the detected value of the radio wave that frequency is detection frequency is obtained；
The detected value of common radio wave includes signal intensity and Signal to Interference plus Noise Ratio, the method of the signal intensity or Signal to Interference plus Noise Ratio that obtain radio wave in radio equipment has multiple, and current radio equipment hardware can support the signal intensity of radio wave or detection the output under the calling of software automatically of Signal to Interference plus Noise Ratio.
305, when detected value is less than threshold value, the radio wave in radio station is continued search for；
Exist in a large number and varied due to signal emitting-source so that realistic space exists the radio wave of various frequency.According to area relevant criterion, frequency modulation radio electric wave has specific spectral range, and frequency of radio station has certain spectrum width.As a example by China, relevant regulations according to GB/T4311-2000 " metric wave frequency modulation broadcasting technical specification ", the wavelength band in frequency modulation (FM) the stereophonic broadcast radio station of China is 87～108MHz, radio station is set by the frequency interval of 0.1MHz, practice is formed the radio station spectrum width with 0.2MHz as width.
The radio wave that frequency is in the spectrum width of radio station has stronger energy, it is possible to produce higher signal intensity or Signal to Interference plus Noise Ratio；
Frequency has relatively low energy beyond the radio wave in the spectrum width of radio station, it is possible to produce relatively low signal intensity or Signal to Interference plus Noise Ratio.
Signal strength threshold value is may determine that between higher signal intensity and relatively low signal intensity, may determine that Signal to Interference plus Noise Ratio threshold value between higher Signal to Interference plus Noise Ratio and relatively low Signal to Interference plus Noise Ratio, make a distinction beyond the radio wave of frequency of radio station width with frequency frequency being in the radio wave of radio station spectrum width.
The generation of signal intensity or Signal to Interference plus Noise Ratio is not only relevant with radio wave, and relevant to the particular hardware receiving radio wave, and this makes in concrete hardware environment, it may be determined that threshold value.
Intelligent electronic device itself is main false platform source, and in actual environment, a certain intelligent electronic device uses step 301, the method for 303,304 to carry out FAS full automatic search radio station, the signal intensity that the frequency of radio station, detection frequency and the frequency that obtain are corresponding.The radio station searched is demodulated and exports, can learn which is false platform, the signal strength values of frequency detecting point of false platform be compared with the signal strength values of the frequency detecting point of true platform, i.e. can determine that threshold value.
nullConcrete，The table corresponding with radio wave signal intensity of radio wave frequency as shown in Figure 5，Frequency 86.4MHz、96.0MHz、102.4MHz、105.6MHz is the frequency of false platform，Frequency 89.7MHz、95.2MHz、98.6MHz、104.1MHz is the frequency of true platform，The signal intensity of the radio wave that the detection frequency of true platform is corresponding is between-90dBm and-85dBm，The signal intensity of the radio wave that the detection frequency of two false platforms is corresponding always has a signal intensity less than-90dBm，Now-90dBm is the threshold value of signal intensity，Certainly threshold value is not limited to-90dBm，Exceed-100dBm、Any one signal intensity of below-90dBm can be all signal strength threshold value.
nullIn like manner，Radio wave frequency as shown in Figure 6 and radio wave signal with interference plus noise than corresponding table，Frequency 86.4MHz、96.0MHz、102.4MHz、105.6MHz is the frequency of false platform，Frequency 89.7MHz、95.2MHz、98.6MHz、104.1MHz is the frequency of true platform，The Signal to Interference plus Noise Ratio (signal to noise ratio) of the radio wave that the detection frequency of true platform is corresponding is between 9dBm and 18dBm，The signal intensity of the radio wave that the detection frequency of two false platforms is corresponding always has a signal intensity less than 9dBm，Now 9dBm is the threshold value of signal intensity，Certainly threshold value is not limited to 9dBm，More than 0dBm、Any one Signal to Interference plus Noise Ratio of below 9dBm can be all Signal to Interference plus Noise Ratio threshold value.
Owing to the intelligent electronic device hardware configuration of same model is identical, so the signal strength threshold value of an electronic equipment or Signal to Interference plus Noise Ratio threshold value are applicable to all electronic equipments with this electronic equipment same model.
When the signal strength values of detection frequency is less than signal strength threshold value, when Signal to Interference plus Noise Ratio is less than Signal to Interference plus Noise Ratio threshold value, now continue search for radio station
306, station radio wave frequency record is deleted；
Specifically, the station radio wave frequency record of deletion is not meet the record that step 305 requires, can be whole station radio wave frequency record can also be wherein part station radio wave frequency record.
Step 302 and step 306 are the process about station radio wave frequency record, through above-mentioned steps, are recorded by the station radio wave frequency searched, and then delete, the false platform frequency record judged such that it is able to obtain the trueest platform frequency record.
The schematic flow sheet of the another kind of radio station searching method that Fig. 4 provides for the embodiment of the present invention.As shown in Figure 4, a kind of radio station searching method that the embodiment of the present invention provides includes:
401, the radio wave in radio station is searched for；
Specifically, the method of the radio wave in search radio station can be auto-manual system broadcasting station search, it can also be full rotation type broadcasting station search, the radio station searched can be a radio station, can also be multiple radio station, to the process in the radio station searched repeat be the process to the multiple radio station searched.
402, carry out being added and additive operation with step frequency by the frequency of radio wave, obtain detecting frequency；
Specifically, the determination of step frequency is according to the relevant criterion in area, different regions may be different about the standard of step frequency, the step frequency of such as China is 0.1MHz according to the relevant regulations of GB/T4311-2000 " metric wave frequency modulation broadcasting technical specification ", the step frequency of the U.S. is 0.2MHz, and the step frequency in Europe is 0.05MHz.
403, the detected value of the radio wave that frequency is detection frequency is obtained；
The detected value of common radio wave includes signal intensity and Signal to Interference plus Noise Ratio, the method of the signal intensity or Signal to Interference plus Noise Ratio that obtain radio wave in radio equipment has multiple, and current radio equipment hardware can support the signal intensity of radio wave or detection the output under the calling of software automatically of Signal to Interference plus Noise Ratio.
404, when detected value is more than or equal to threshold value, the radio wave of radio station adjustment is solved；
Exist in a large number and varied due to signal emitting-source so that realistic space exists the radio wave of various frequency.According to area relevant criterion, frequency modulation radio electric wave has specific spectral range, and frequency of radio station has certain spectrum width.As a example by China, relevant regulations according to GB/T4311-2000 " metric wave frequency modulation broadcasting technical specification ", the wavelength band in frequency modulation (FM) the stereophonic broadcast radio station of China is 87～108MHz, radio station is set by the frequency interval of 0.1MHz, practice is formed the radio station spectrum width with 0.2MHz as width.
The radio wave that frequency is in the spectrum width of radio station has stronger energy, it is possible to produce higher signal intensity or Signal to Interference plus Noise Ratio；
Frequency has relatively low energy beyond the radio wave in the spectrum width of radio station, it is possible to produce relatively low signal intensity or Signal to Interference plus Noise Ratio.
Signal strength threshold value is may determine that between higher signal intensity and relatively low signal intensity, may determine that Signal to Interference plus Noise Ratio threshold value between higher Signal to Interference plus Noise Ratio and relatively low Signal to Interference plus Noise Ratio, make a distinction beyond the radio wave of frequency of radio station width with frequency frequency being in the radio wave of radio station spectrum width.
The generation of signal intensity or Signal to Interference plus Noise Ratio is not only relevant with radio wave, and relevant to the particular hardware receiving radio wave, and this makes in concrete hardware environment, it may be determined that threshold value.
Intelligent electronic device itself is main false platform source, and in actual environment, a certain intelligent electronic device uses step 401, the method for 402,403 to carry out FAS full automatic search radio station, the signal intensity that the frequency of radio station, detection frequency and the frequency that obtain are corresponding.The radio station searched is demodulated and exports, can learn which is false platform, the signal strength values of frequency detecting point of false platform be compared with the signal strength values of the frequency detecting point of true platform, i.e. can determine that threshold value.
nullConcrete，The table corresponding with radio wave signal intensity of radio wave frequency as shown in Figure 5，Frequency 86.4MHz、96.0MHz、102.4MHz、105.6MHz is the frequency of false platform，Frequency 89.7MHz、95.2MHz、98.6MHz、104.1MHz is the frequency of true platform，The signal intensity of the radio wave that the detection frequency of true platform is corresponding is between-90dBm and-85dBm，The signal intensity of the radio wave that the detection frequency of two false platforms is corresponding always has a signal intensity less than-90dBm，Now-90dBm is the threshold value of signal intensity，Certainly threshold value is not limited to-90dBm，Exceed-100dBm、Any one signal intensity of below-90dBm can be all signal strength threshold value.
nullIn like manner，Radio wave frequency as shown in Figure 6 and radio wave signal with interference plus noise than corresponding table，Frequency 86.4MHz、96.0MHz、102.4MHz、105.6MHz is the frequency of false platform，Frequency 89.7MHz、95.2MHz、98.6MHz、104.1MHz is the frequency of true platform，The Signal to Interference plus Noise Ratio (signal to noise ratio) of the radio wave that the detection frequency of true platform is corresponding is between 9dBm and 18dBm，The signal intensity of the radio wave that the detection frequency of two false platforms is corresponding always has a signal intensity less than 9dBm，Now 9dBm is the threshold value of signal intensity，Certainly threshold value is not limited to 9dBm，More than 0dBm、Any one Signal to Interference plus Noise Ratio of below 9dBm can be all Signal to Interference plus Noise Ratio threshold value.
Owing to the intelligent electronic device hardware configuration of same model is identical, so the signal strength threshold value of an electronic equipment or Signal to Interference plus Noise Ratio threshold value are applicable to all electronic equipments with this electronic equipment same model.
When the signal strength values of detection frequency is more than or equal to signal strength threshold value, when Signal to Interference plus Noise Ratio is more than or equal to Signal to Interference plus Noise Ratio threshold value, now solve the radio wave of radio station adjustment.
405, station list is generated；
Specifically, the trueest platform frequency is recorded in the form of a file and preserves.
Step 405 is the process about station radio wave frequency record, through above-mentioned steps, is recorded by the radio wave frequency being judged to true platform, forms the station list of true platform frequency.
It should be understood that for aforesaid each method embodiment, in order to be briefly described, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not limited by described sequence of movement, because according to the present invention, some step can use other orders or carry out simultaneously.Secondly, those skilled in the art also should know, embodiment described in this description belongs to preferred embodiment, necessary to involved action and the module not necessarily present invention.
The structural representation of a kind of radio station searching method device that Fig. 7 provides for another embodiment of the present invention, as it is shown in fig. 7, a kind of broadcasting station search device of the present embodiment may include that
Search unit 701, for searching for the radio wave in radio station；
Processing unit 702, for carrying out being added and additive operation with step frequency by the frequency of radio wave, obtains detecting frequency；
Detector unit 703, for obtaining the detected value of the radio wave that frequency is detection frequency；
Processing unit is additionally operable to when detected value is less than threshold value, and notice search unit continues search for the radio wave in radio station.
Specifically, the method of the radio wave in search radio station can be auto-manual system broadcasting station search, it can also be full rotation type broadcasting station search, the radio station searched can be a radio station, it can also be multiple radio station, to the process in the radio station searched repeat be the process to the multiple radio station searched, as a example by this sentences the radio station that frequency is 98MHz.
Specifically, the determination of step frequency is according to the relevant criterion in area, different regions may be different about the standard of step frequency, the step frequency of such as China is 0.1MHz according to the relevant regulations of GB/T4311-2000 " metric wave frequency modulation broadcasting technical specification ", the step frequency of the U.S. is 0.2MHz, and the step frequency in Europe is 0.05MHz.Step frequency herein takes 0.1MHz by China's standard, and the detection frequency obtained is 97.9MHz and 98.1MHz.
The detected value of common radio wave includes signal intensity and Signal to Interference plus Noise Ratio, the method of the signal intensity or Signal to Interference plus Noise Ratio that obtain radio wave in radio equipment has multiple, and current radio equipment hardware can support the signal intensity of radio wave or detection the output under the calling of software automatically of Signal to Interference plus Noise Ratio.
Exist in a large number and varied due to signal emitting-source so that realistic space exists the radio wave of various frequency.According to area relevant criterion, frequency modulation radio electric wave has specific spectral range, and frequency of radio station has certain spectrum width.As a example by China, relevant regulations according to GB/T4311-2000 " metric wave frequency modulation broadcasting technical specification ", the wavelength band in frequency modulation (FM) the stereophonic broadcast radio station of China is 87～108MHz, radio station is set by the frequency interval of 0.1MHz, practice is formed the radio station spectrum width with 0.2MHz as width.
The radio wave that frequency is in the spectrum width of radio station has stronger energy, it is possible to produce higher signal intensity or Signal to Interference plus Noise Ratio；
Frequency has relatively low energy beyond the radio wave in the spectrum width of radio station, it is possible to produce relatively low signal intensity or Signal to Interference plus Noise Ratio.
Signal strength threshold value is may determine that between higher signal intensity and relatively low signal intensity, may determine that Signal to Interference plus Noise Ratio threshold value between higher Signal to Interference plus Noise Ratio and relatively low Signal to Interference plus Noise Ratio, make a distinction beyond the radio wave of frequency of radio station width with frequency frequency being in the radio wave of radio station spectrum width.
The generation of signal intensity or Signal to Interference plus Noise Ratio is not only relevant with radio wave, and relevant to the particular hardware receiving radio wave, and this makes in concrete hardware environment, it may be determined that threshold value.
Intelligent electronic device itself is main false platform source, and in actual environment, a certain intelligent electronic device carries out FAS full automatic search radio station, the signal intensity that the frequency of radio station, detection frequency and the frequency that obtain are corresponding.The radio station searched is demodulated and exports, can learn which is false platform, the signal strength values of frequency detecting point of false platform be compared with the signal strength values of the frequency detecting point of true platform, i.e. can determine that threshold value.
nullConcrete，The table corresponding with radio wave signal intensity of radio wave frequency as shown in Figure 5，Frequency 86.4MHz、96.0MHz、102.4MHz、105.6MHz is the frequency of false platform，Frequency 89.7MHz、95.2MHz、98.6MHz、104.1MHz is the frequency of true platform，The signal intensity of the radio wave that the detection frequency of true platform is corresponding is between-90dBm and-85dBm，The signal intensity of the radio wave that the detection frequency of two false platforms is corresponding always has a signal intensity less than-90dBm，Now-90dBm is the threshold value of signal intensity，Certainly threshold value is not limited to-90dBm，Exceed-100dBm、Any one signal intensity of below-90dBm can be all signal strength threshold value.
nullIn like manner，Radio wave frequency as shown in Figure 6 and radio wave signal with interference plus noise than corresponding table，Frequency 86.4MHz、96.0MHz、102.4MHz、105.6MHz is the frequency of false platform，Frequency 89.7MHz、95.2MHz、98.6MHz、104.1MHz is the frequency of true platform，The Signal to Interference plus Noise Ratio (signal to noise ratio) of the radio wave that the detection frequency of true platform is corresponding is between 9dBm and 18dBm，The signal intensity of the radio wave that the detection frequency of two false platforms is corresponding always has a signal intensity less than 9dBm，Now 9dBm is the threshold value of signal intensity，Certainly threshold value is not limited to 9dBm，More than 0dBm、Any one Signal to Interference plus Noise Ratio of below 9dBm can be all Signal to Interference plus Noise Ratio threshold value.
Owing to the intelligent electronic device hardware configuration of same model is identical, so the signal strength threshold value of an electronic equipment or Signal to Interference plus Noise Ratio threshold value are applicable to all electronic equipments with this electronic equipment same model.
Herein, for detection frequency 97.9MHz, its signal strength values is-88dBm, and its Signal to Interference plus Noise Ratio is 15,
For detection frequency 98.1MHz, its signal strength values is-100dBm, and its Signal to Interference plus Noise Ratio is 1,
And in specific search hardware, signal strength threshold value is-95dBm, and Signal to Interference plus Noise Ratio threshold value is 2.
When the signal strength values-100dBm of detection frequency is less than signal strength threshold value-95dBm, when Signal to Interference plus Noise Ratio 1 is less than Signal to Interference plus Noise Ratio threshold value 2, now continue search for radio station.
Radio station has certain spectrum width.The radio wave in the radio station searched, its frequency is in the spectrum width of radio station, and the radio wave of this frequency can produce the strongest detected value, and common detected value includes signal intensity and Signal to Interference plus Noise Ratio.
During completing the invention, inventor finds, for true platform, its spectrum width is the twice of step frequency, i.e. carries out forward, backward centered by station radio wave frequency after one times of stepping in the range of still in the spectrum width in radio station；When the twice of spectrum width deficiency step frequency, having exceeded the spectrum width scope in radio station after i.e. carrying out one times of stepping forward, backward centered by station radio wave frequency, this is false platform.
In the range of the frequency of radio wave is in the spectrum width in radio station, the detected value that this radio wave produces is higher；When the frequency of radio wave is beyond radio station spectrum width scope, and the detected value of this radio wave substantially reduces, and may determine that threshold value between higher detected value and relatively low detected value.
In prior art, after the radio wave of complete pair of stations is searched for, directly the radio broadcasting signal of carrying in this radio wave is demodulated and exports, when the radio wave searched is sent by false platform, and what now user heard is mixed and disorderly noise.
In the embodiment of the present invention, after the radio wave searching radio station, whether meet, by the spectrum width judging this radio station, the spectrum width that relevant criterion sets, thus judge whether this radio station is false platform, if false platform, then continue search for the radio wave in radio station.
nullSpecifically，The radio wave in search radio station，Carry out being added and additive operation with step frequency by the frequency of radio wave，I.e. centered by station radio wave frequency forward、To each stepping 0.1MHz，Obtain two detection frequencies 97.9MHz and 98.1MHz，If the detection frequency obtained after stepping is beyond the spectrum width scope in radio station，Frequency be this detection frequency radio wave produce signal intensity or Signal to Interference plus Noise Ratio relatively low，For detection frequency 97.9MHz，The signal strength values of the radio wave of this frequency is-88dBm，The Signal to Interference plus Noise Ratio of the radio wave of this frequency is 15，For detection frequency 98.1MHz，The signal strength values of the radio wave of this frequency is-100dBm，The Signal to Interference plus Noise Ratio of the radio wave of this frequency is 1，Signal strength threshold value is-95dBm，Signal to Interference plus Noise Ratio threshold value is 2.By comparing with threshold value, when the signal strength values-100dBm detecting frequency is less than Signal to Interference plus Noise Ratio threshold value 2 less than signal strength threshold value-95dBm or Signal to Interference plus Noise Ratio 1, determine that this radio station is false platform, now continue search for the radio wave in radio station, avoid exporting false platform, to improve the experience of user.
Further, as it is shown in fig. 7, above-mentioned broadcasting station search device also includes that signal output unit 704, signal output unit 704 are used for when detected value is more than or equal to threshold value, the radio wave solving radio station adjustment the information of the radio wave carried exporting radio station.
Specifically, during semi-automatic tuning, output radio signals can be the output being realized sound by the electroacoustic conversion unit such as earphone, speaker, and during full-automatic tuning, output radio signals can be to be placed in depositor by station radio wave frequency.
Further, search unit 701 is additionally operable to, and generates station radio wave frequency record after the radio wave in search radio station；
Specifically, the station radio wave frequency that record searches, when the radio station searched is one, the frequency in one radio station of record, when the radio station searched is multiple, records the frequency in multiple radio station, station radio wave frequency record can be a temporary value, it is also possible to be a channel list.
Processing unit 702 is additionally operable to, and deletes station radio wave frequency record after the radio wave continuing search for radio station.
Specifically, the station radio wave frequency record of deletion is not meet the record that step 305 requires, can be whole station radio wave frequency record can also be wherein part station radio wave frequency record.The station radio wave frequency searched is recorded, then the false platform frequency record judged is deleted, such that it is able to obtain the trueest platform frequency record.
Further, search unit 701 is additionally operable to after solving the information of the radio wave of radio station adjustment the radio wave carried that exports radio station generate station list.
Specifically, the trueest platform frequency is recorded in the form of a file and preserves.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program.Therefore, the form of the embodiment in terms of the present invention can use complete hardware embodiment, complete software implementation or combine software and hardware.And, the present invention can use the form at one or more upper computer programs implemented of computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) wherein including computer usable program code.
The present invention is to describe with reference to method, equipment (system) and the flow chart of computer program according to embodiments of the present invention and/or block diagram.It should be understood that can be by the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces the manufacture including command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to perform sequence of operations step on computer or other programmable devices to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides the step of the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame for realization.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without departing from the spirit and scope of the present invention to the present invention.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a radio station searching method, it is characterised in that including:
The radio wave in search radio station；
The frequency of described radio wave and step frequency are carried out sum operation and/or additive operation respectively, obtains detecting frequency；
Obtain the detected value of the radio wave that frequency is described detection frequency；
When described detected value is less than threshold value, continue search for the radio wave in radio station.
2. radio station searching method as claimed in claim 1, it is characterised in that also include:
When described detected value is more than or equal to described threshold value, demodulate the radio wave in described radio station.
3. radio station searching method as claimed in claim 1, it is characterised in that after the radio wave step in described search radio station, also include:
Generate station radio wave frequency record.
4. radio station searching method as claimed in claim 2, it is characterised in that after the radio wave step in the described radio station of described demodulation, also include:
Generate station list.
5. the radio station searching method as described in claim 1-4 is arbitrary, it is characterised in that described detected value is signal intensity or the Signal to Interference plus Noise Ratio of the radio wave of described detection frequency.
6. a broadcasting station search device, it is characterised in that include
Search unit, for searching for the radio wave in radio station；
Processing unit, for the frequency of described radio wave and step frequency are carried out sum operation and/or additive operation respectively, obtains detecting frequency；
Detector unit, for obtaining the detected value of the radio wave that frequency is described detection frequency；
Described processing unit is additionally operable to, when described detected value is less than threshold value, notify that described search unit continues search for the radio wave in radio station.
7. broadcasting station search device as claimed in claim 6, it is characterised in that also include signal output unit, described signal output unit is for when described detected value is more than or equal to described threshold value, demodulating the radio wave in described radio station.
8. broadcasting station search device as claimed in claim 6, it is characterised in that
Described search unit is additionally operable to, and generates station radio wave frequency record；
Described processing unit is additionally operable to, and deletes described station radio wave frequency record.
9. broadcasting station search device as claimed in claim 7, it is characterised in that described search unit is additionally operable to generate station list.
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