CN202978969U - Broadcast frequency switching device - Google Patents
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- CN202978969U CN202978969U CN 201220687116 CN201220687116U CN202978969U CN 202978969 U CN202978969 U CN 202978969U CN 201220687116 CN201220687116 CN 201220687116 CN 201220687116 U CN201220687116 U CN 201220687116U CN 202978969 U CN202978969 U CN 202978969U
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Abstract
The utility model discloses a broadcast frequency switching device applied to a transport vehicle with a positioning device. The broadcast frequency switching device comprises a tuner, a storage module and a processing module. The tuner is used for mediating a first broadcast signal according to current frequency, and the processing module is used for receiving a position coordinate message generated in real time and comparing the position coordinate message with that of a broadcast channel table stored in the storage module so as to search corresponding preset frequency. When a first signal-to-noise ratio of the first broadcast signal is less than a preset threshold, the tuner is capable of mediating a second broadcast signal, and the processing module stores the second broadcast signal as a switching coordinate message. When the processing module receives another position coordinate message, and a corresponding switching coordinate message is searched, the tuner mediates a broadcast signal corresponding to the switching coordinate message according to the switching coordinate message.
Description
Technical field
The utility model relates to a kind of broadcasting frequency switching device shifter, be particularly related to when vehicle-carried when being positioned at same broadcasting channel and having two broadcasting frequencys regional, utilize predetermined threshold and signal to noise ratio to judge, automatically to switch the broadcasting frequency switching device shifter of broadcasting frequency.
Background technology
Generally speaking, the driver was when driving in the past, in order to learn real-time road condition, the custom of broadcast listening channel all can be arranged, wherein, because the channel covering area range of broadcasting base station is limited, make the broadcasting frequency of same broadcasting station in different regions might not be identical, take in wide fashion network as example, in Keelung, the receive frequency in the Taibei and peach garden is FM103.3, and the receive frequency of Hsinchu and Miaoshu is FM102.9, and the receive frequency in platform is FM102.1.
Wide fashion network and when travelling to the Hsinchu from the peach garden in the driver listens to, the situation that can cause the not good even broadcasting of reception to interrupt, also therefore need mat manually to be adjusted to the FM102.9 receive frequency by FM103.3 when driving to the Hsinchu, therefore in driving, safe doubt is arranged.Accordingly, the continent number of patent application has proposed respectively " changing method of vehicle broadcasting channels " and " audio apparatus for vehicle of certainly moving platform " No. 200810175703.2 and No. 200510004257.5, the position that its function (for example No. 200810175703.2 positioning function by hand-hold electronic device of continent number of patent application) that is all utilization is located is learnt vehicle, and then can switch to according to the position of present vehicle local receive frequency, use and listen to same broadcasting channel, thereby solved the problem that the driver needs the manual switchover receive frequency.
In addition, the continent number of patent application has more proposed a kind of broadcast receiver and broadcast receiving method No. 201110076617.8, it is for switching to analog broadcasting when the digital broadcasting reception is not good, then detect the signal strength signal intensity of emulation broadcasting, use the acoustic characteristic that makes before switching and control close to the acoustic characteristic after switching, and then reduce the sense of discomfort of driver when the broadcast listening channel.In addition, No. the M315176th, Taiwan patent proposes the suitableeest sound system vehicle of listening to frequency of a kind of automatic adjustment, mainly utilizes detecting module, with the detecting broadcast singal, and then judges that present frequency and preset frequency whichever are the suitableeest frequency of listening to.
Yet, although these patent documentations provide the technology contents of automatically switching channels, if but it is still good to have current reception, as long as and when moving to different channel coverage (as above-mentioned act by the peach garden to the Hsinchu), it can directly switch and have the waste resource to cause the not good problem of usefulness, and can't solve above-mentioned waste resource and cause the not good problem of usefulness, therefore existing technology still has the space of improvement.
The utility model content
Technical problem and purpose that the utility model institute wish solves:
In the prior art, ubiquity has two when listening to frequency regional when the vehicle-carried identical broadcasts channel that is positioned at, and existing technology can directly be carried out frequency and switched and have the waste resource to cause the not good problem of usefulness.
For solving the problem of prior art, the utility model provides a kind of broadcasting frequency switching device shifter;
For achieving the above object, the utility model by the following technical solutions:
A kind of broadcasting frequency switching device shifter is applied to have the vehicle-carried of positioner, and described broadcasting frequency switching device shifter comprises: tuner, storage module and processing module.Tuner is according to the first broadcast singal of frequency conciliation at present.Storage module has the broadcasting channel table, the area coordinate information of at least one broadcasting channel of broadcasting channel table record and corresponding preset frequency.Processing module is electrically connected positioner and tuner, with the instant location coordinate information that produces of receiving positioner; Processing module is according to each area coordinate information in location coordinate information comparison storage module, to find the corresponding preset frequency of location coordinate information.Processing module parses the first signal to noise ratio of the first broadcast singal, and judges that according to this whether described the first signal to noise ratio is lower than predetermined threshold; If the first signal to noise ratio is during lower than predetermined threshold, processing module is controlled tuner and is reconciled, reconcile out the second broadcast singal according to the corresponding preset frequency that finds, and processing module is with location coordinate information and find corresponding preset frequency and save as the switching coordinate information; When processing module receives another location coordinate information, processing module is first searched in storage module according to this, whether has corresponding switching coordinate data, if have corresponding switching coordinate information, processing module is controlled tuner and is reconciled out corresponding broadcast singal according to the preset frequency of switching coordinate information.
Preferably, when processing module judgement the first signal to noise ratio during greater than predetermined threshold, processing module is according to the judgement time between 10 seconds to 60 seconds, to repeat to judge the size of the first signal to noise ratio and predetermined threshold.
Preferably, during lower than predetermined threshold, processing module parses the second signal to noise ratio of the second broadcast singal, and judges that according to this whether the second signal to noise ratio is greater than predetermined threshold when the first signal to noise ratio of processing module judgement the first broadcast singal; When processing module judged the second signal to noise ratio greater than predetermined threshold, processing module was controlled tuner and is reconciled out the second broadcast singal according to preset frequency.
Preferably, when processing module judgement the second signal to noise ratio during lower than predetermined threshold, processing module is according to the judgement time between 10 seconds to 60 seconds, to repeat to judge the size of the second signal to noise ratio and predetermined threshold.
Preferably, lower than predetermined threshold, processing module switches to the multimedia messages broadcast source when processing module judgement the second signal to noise ratio.
Preferably, during lower than predetermined threshold, processing module parses the second signal to noise ratio of the second broadcast singal, and judges that according to this whether the second signal to noise ratio is greater than the first signal to noise ratio when the first signal to noise ratio of processing module judgement the first broadcast singal; If the second signal to noise ratio is during greater than the first signal to noise ratio, processing module is controlled tuner and is reconciled out the second broadcast singal according to preset frequency.
Preferably, when processing module judgement the second signal to noise ratio during lower than the first signal to noise ratio, processing module is according to the judgement time between 10 seconds to 60 seconds, to repeat to judge the size of the second signal to noise ratio and the first signal to noise ratio.
Preferably, when processing module judged the second signal to noise ratio lower than the first signal to noise ratio, processing module switched to the multimedia messages broadcast source.
Preferably, between predetermined threshold 10 to 30 decibels (dB).
Preferably, processing module is microprocessor controller (Microprocessor Control Unit), central processing unit (Central Processing Unit, CPU) or microprocessor (Micro-Processing Unit CPU).
In sum, the utility model broadcasting frequency switching device shifter has the following advantages:
(1) the utility model broadcasting frequency switching device shifter, elements of a fix information by positioner, immediately search in storage module, the broadcasting frequency of vehicle-carried their location, use the current broadcasting frequency of instant switching, and then the driver can switch broadcasting frequency voluntarily, and continues to listen to same broadcasting channel.
(2) the utility model broadcasting frequency switching device shifter, by resolving the signal to noise ratio of each broadcast singal, and according to this with predetermined threshold relatively, whether switch broadcasting frequency to judge decision, so can keep broadcast singal well listen to quality.
(3) the utility model broadcasting frequency switching device shifter, by resolving the signal to noise ratio of each broadcast singal, and compare with predetermined threshold according to this, and further judgement when each signal to noise ratio during all lower than predetermined threshold, the driver broadcasting channel is converted to another multimedia messages broadcast source, so that need not listen to the relatively poor broadcasting of tonequality.
(4) broadcasting frequency switching device shifter of the present utility model switches at that time relevant information by immediate memory, and then can allow the user again enter same position the time, utilizes the relevant information of remembering, the switching operation of be correlated with fast.
Description of drawings
Fig. 1 shows the calcspar of broadcasting frequency switching device shifter of the present utility model;
Fig. 2 shows that the broadcasting channel of broadcasting frequency switching device shifter of the present utility model represents intention;
Fig. 3 shows the schematic diagram of broadcasting frequency switching device shifter of the present utility model;
Fig. 4 shows the schematic flow sheet of the first embodiment of broadcasting frequency switching device shifter of the present utility model;
Fig. 5 shows the schematic flow sheet of the second embodiment of broadcasting frequency switching device shifter of the present utility model;
Fig. 6 shows the schematic flow sheet of the 3rd embodiment of broadcasting frequency switching device shifter of the present utility model.
[primary clustering symbol description]
1: broadcasting frequency switching device shifter 10: tuner 100: present 101: the first broadcast singals of frequency
1021: the second signal to noise ratios 11 of 102: the second broadcast singals of 1011: the first signal to noise ratios: storage module
110: broadcasting channel table 1101: broadcasting channel 1101a: area coordinate information 1101b: preset frequency
1102: switch coordinate data 12: processing module 121: predetermined threshold 20: vehicle-carried
The 21: positioner 211: location coordinate information R1: first broadcasting frequency zone R2: the second broadcasting frequency is regional
I: buffer area S101 ~ S105: process step S201 ~ S207: process step S301 ~ S307: process step
Embodiment
See also Fig. 1, be the calcspar of broadcasting frequency switching device shifter of the present utility model.As shown in the figure, broadcasting frequency switching device shifter 1 is applied to have vehicle-carried 20 of positioner 21.Vehicle-carried 20 can be oily electric car, oil consumption car, electric motor car etc.Positioner 21 can be global positioning system (Global Positioning System, GPS), Global System for Mobile Communication (Wireless Fidelity, Wi-Fi) and less radio-frequency (Radio Frequency, RF).Broadcasting frequency switching device shifter 1 comprises: tuner 10, storage module 11 and processing module 12.Tuner 10 is reconciled the first broadcast singals 101 according to present frequency 100.Storage module 11 has broadcasting channel table 110, and broadcasting channel table 110 records area coordinate information 1101a and the corresponding preset frequency 1101b of at least one broadcasting channel 1101.Storage module 11 can be non-voltile memory (Non-volatile memory), magnetic storage, volatile memory (Volatile memory), DRAM (Dynamic Random Access Memory) (Dynamic Random Access Memory, DRAM), one of them or its combination such as static random access memory (Static Random Access Memory, SRAM).Processing module 12 is electrically connected positioner 21 and tuner 10, with the instant location coordinate information 211 that produces of receiving positioner 21; Processing module 12 is according to each area coordinate information 1101a in location coordinate information 211 comparison storage modules 11, to find the corresponding preset frequency 1101b of location coordinate information 211.Processing module 12 can be microprocessor controller (Microprocessor Control Unit), central processing unit (Central Processing Unit, CPU), microprocessor (Micro-Processing Unit) CPU, single core or multi-core processor, Application Specific Integrated Circuit (Application-specific integrated circuit, ASIC) etc.
Broadcasting frequency switching device shifter 1 first parses the first signal to noise ratio 1011(Signal-To-Noise Ratio, SNR of the first broadcast singal 101 by processing module 12), and judge that according to this whether it is lower than predetermined threshold 121(threshold).Processing module 12 is resolved the method for the first signal to noise ratio 1011 of the first broadcast singal 101, can adopt signal strength signal intensity and the background signal intensity of the first broadcast singal 101 of reception to carry out ratio, to calculate the first instantaneous signal to noise ratio 1011.If the first signal to noise ratio 1011 is during lower than predetermined threshold 121, processing module 12 is controlled tuners 10 and is reconciled out the second broadcast singal 102 according to the corresponding preset frequency 1101b that find, and uses to allow the user continue the better broadcasting of uppick quality.In actual applications, processing module 12 can become the relevant information record of second broadcast singal 102 of at every turn reconciling and switch coordinate information 1102, be beneficial to when processing module 12 receives same position coordinate information 211 again, carry out the signal conciliation but direct basis switches preset frequency 1101b corresponding in coordinate information 1102.Switch coordinate information 1102 comprise switching at that time location coordinate information 211 and the preset frequency 1101b that switches.
In other words, in actual applications, for the benefit of judge whether fast to need to switch present broadcasting frequency, when processing module 12 instant receiving position coordinate information 211, can first compare and whether have corresponding switching coordinate data 1102 in storage module 11, if corresponding switching coordinate information 1102 is arranged, the processing module 12 corresponding preset frequency 1101b of the described switching coordinate information 1102 of direct basis carry out the switching of broadcasting frequency.Certainly, in advanced application, the user can share or receive other people switching coordinate information 1102 by cloud server, be beneficial to judge whether fast to switch broadcasting frequency.
For profit clearly demonstrates foregoing, see also Fig. 2 and Fig. 3.Fig. 2 is the schematic diagram of the broadcasting channel table 110 of broadcasting frequency switching device shifter of the present utility model; Fig. 3 is the schematic diagram of broadcasting frequency switching device shifter of the present utility model.Fig. 2 is the broadcasting channel table 110 that above-mentioned middle storage module 11 stores." in wide music " in figure reaches " flying saucer radio station " and is above-mentioned broadcasting channel 1101; " Taibei ", " peach garden ", " Hsinchu ", " in platform " reach " Kaohsiung " and are area coordinate information 1101a (in the actual operation process for processing module 12, can be that coordinate figure with each department carries out computing, be that the profit explanation is with example by name practically in this); And the each department of each broadcasting channel 1101 correspondences in figure (area coordinate information 1101a) has a broadcasting frequency (being above-mentioned preset frequency 1101b).
As shown in Figure 3, draw for each area coordinate information 1101a and corresponding preset frequency 1101b according to a broadcasting channel 1101 the broadcasting frequency administrative division map that forms.That is to say, show in figure that a broadcasting channel is in the scope of effectively listening to (the first broadcasting frequency zone R1 and the second broadcasting frequency zone R2) of different regions.As shown in the figure, the vehicle-carried 20 buffer area I that are positioned at present the first broadcasting frequency zone R1 and the second broadcasting frequency zone R2.At this moment, the driver can utilize the first broadcasting frequency zone R1 corresponding listen to frequency or the second broadcasting frequency zone R2 corresponding listen to frequency, broadcast listening channel.That is to say, in the prior art, the driver must the Self-adjustment conversion listen to frequency, and judges that voluntarily whichever listens that to receive quality comparatively stable or comparatively good.In view of this, broadcasting frequency switching device shifter 1 of the present utility model provides the solution under this situation, by the broadcast singal in analyzing and processing two zones, automatically to switch to the suitableeest frequency of listening to.Below will illustrate one by one mode and the flow process of judgement.Should be noted when processing module 12 receiving position coordinate information 211, can first search whether have corresponding switching coordinate data 1102 in storage module 11; Respectively implement in aspect in following, will not find when having corresponding location coordinate information 211 in storage module 11 as the explanation situation take processing module 12.
See also Fig. 4, show the schematic flow sheet of the first preferred embodiment of broadcasting frequency switching device shifter of the present utility model.In the present embodiment, suppose that the broadcast singal that the driver receives at present is the first broadcast singal 101.It is worth mentioning that, in actual applications, after tuner 10 is reconciled out broadcast singal, need by processing procedures such as loud speakers (such as loudspeaker), to play broadcasted content corresponding to broadcast singal.And, clearly demonstrating the deterministic process of broadcasting frequency switching device shifter 1 for profit, indication in this embodiment: tuner 10 is reconciled the first broadcast singals 101 (or second broadcast singal 102), meaning is namely sent corresponding broadcasted content by loud speaker.
As shown in the figure, the first embodiment implementation step of broadcasting frequency switching device shifter of the present utility model is as follows:
S101: vehicle-carried 20 positioner 21 positions, to produce location coordinate information 211;
S102: processing module 12 receiving position coordinate informations 211, and read broadcasting channel table 110 in storage module 11;
S103: processing module 12 is according to location coordinate information 211, and each area coordinate information 1101a in comparison broadcasting channel table 110 is to find corresponding preset frequency 1101b;
S104: processing module 12 parses the first signal to noise ratio 1011 of the first broadcast singal 101, and judges that according to this whether the first signal to noise ratio is lower than predetermined threshold 121; If the first signal to noise ratio 1011 does not continue to compare lower than 121 processing modules 12 of predetermined threshold;
S105: if when processing module 12 judges the first signal to noise ratios 1011 lower than predetermined threshold 121, processing module 12 is controlled tuner 10, reconciles out the second broadcast singal 102 (namely switching present broadcasting frequency) according to the corresponding preset frequency 1101b that finds.
In actual applications, during greater than predetermined threshold 121, processing module 12 repeats judgement once again via the judgement time between 10 seconds to 60 seconds when processing module 12 judgement the first signal to noise ratios 1011, in the utility model preferred embodiment take 30 seconds as good.In addition, predetermined threshold 121 can be between 10 to 30 decibels (dB), and the utility model the first preferred embodiment is take 20 decibels as good.
Specifically, see also Fig. 2 and Fig. 3.If the driver just listens to " in wide music ", and drive vehicle-carried 20 just driving towards area, Hsinchu (the second broadcasting frequency zone R2) by area, peach garden (the first broadcasting frequency zone R1).That is to say, the driver is present receive in the present frequency 100 of the first broadcast singal 101 of wide music be FM96.3.when vehicle-carried 20 enter the juncture area (buffer area I) in two areas, processing module 12 can be by location coordinate information 211 and broadcasting channel table 110, (anticipate namely with the broadcasting frequency that finds area, Hsinchu (the second broadcasting frequency zone R2), the corresponding preset frequency 1101b of area coordinate information 1101a), and it (is the broadcast singal in area, peach garden that processing module 12 can parse the first broadcast singal 101, the broadcast singal of namely instantly listening to) the first signal to noise ratio 1011, and judge that according to this whether the first signal to noise ratio 1011 is lower than predetermined threshold 121, if the first signal to noise ratio 1011 is lower than predetermined threshold 121, 12 control tuners 10 of processing module, according to the broadcasting frequency FM96.1 (being the preset frequency 1101b that finds) in area, Hsinchu to reconcile out the second broadcast singal 102 (namely switching present broadcasting frequency).
Briefly, enter same broadcasting channel and have two broadcasting when listening to the buffer area I of signal when vehicle-carried 20, processing module 12 can judge the quality (can be to utilize signal to noise ratio) of the present broadcast singal that receives, when if the broadcast singal quality that receives at present is scheduled to value difference, processing module 12 can find out the frequency of listening in another area according to positioner 21 judgements, to utilize another regional broadcast singal broadcast listening.
See also Fig. 5, it shows the schematic flow sheet of the second preferred embodiment of broadcasting frequency switching device shifter of the present utility model.Should be noted, in a upper embodiment, directly reconcile out broadcast singal with tuner 10, as dialling the hypothesis of putting broadcasted content.In the present embodiment, describe in the mode near virtual condition more, that is to say, after tuner 10 is reconciled out broadcast singal, can be via after processing judgement, then dial by loud speaker and put corresponding broadcasted content.In other words, in the present embodiment, loud speaker is being dialled when putting the broadcasted content of the first broadcast singal 101, and whether tuner 10 can be reconciled out the second broadcast singal 102 simultaneously, after processing through judgement, then determine to dial by loud speaker according to this to put.
As shown in Figure 5, in this embodiment, suppose that vehicle-carried 20 are just receiving the first broadcast singal 101 at present with broadcast listening.Relevant implementation step is as follows:
S201: vehicle-carried 20 positioner 21 positions, to produce location coordinate information 211;
S202: processing module 12 receiving position coordinate informations 211, and read broadcasting channel table 110 in storage module 11;
S203: processing module 12 is according to location coordinate information 211, and each area coordinate information 1101a in comparison broadcasting channel table 110 is to find corresponding preset frequency 1101b;
S204: processing module 12 parses the first signal to noise ratio 1011 of the first broadcast singal 101, and judges that according to this whether it is lower than predetermined threshold 121; If the first signal to noise ratio 1011 continues to compare higher than 121 processing modules 12 of predetermined threshold;
S205: if the first signal to noise ratio 1011 is controlled tuner 10 lower than 121 processing modules of predetermined threshold 12, utilize the preset frequency 1101b that finds out, reconcile out the second broadcast singal 102; (should be noted, still dial and put the first broadcast singal 101 this moment vehicle-carried 20)
S206: processing module 12 parses the second signal to noise ratio 1021 of the second broadcast singal 102, and judges that according to this whether it is lower than predetermined threshold 121;
S2061: if the second signal to noise ratio 1021 switches to broadcast singal lower than 121 processing modules 12 of predetermined threshold vehicle-carried 20 multimedia messages broadcast source (can be the music that the driver sets up on their own);
S207: if the second signal to noise ratio 1021 higher than predetermined threshold 121, processing module 12 is controlled tuners 10, the preset frequency 1101b according to finding out reconciles out the second broadcast singal 102, to switch to the second broadcast singal 102; (meaning namely, tuner 10 is reconciled out the second broadcast singal 102, and dials by loud speaker and put its corresponding broadcasted content; That is to say and switch present broadcasting frequency).
Should be noted, above-mentioned steps S206, during simultaneously lower than predetermined threshold 121, broadcasting frequency switching device shifter 1 can also be not carry out any switching operation when the first signal to noise ratio 1011 and the second signal to noise ratio 1021.Meaning namely if the second signal to noise ratio 1021 during lower than predetermined threshold 121, can be not carry out frequency to switch, and continues to listen to the first broadcast singal 101.Certainly, in another embodiment, if can also be the second signal to noise ratio 1021 during lower than predetermined threshold 121, processing module 12 repeats contrast judgement, can practical application and designed in its judgement time and interval.
Say, processing module 12 judgement the first signal to noise ratios 1011 are during lower than predetermined threshold 121 blanketly, if the second signal to noise ratio 1021 during also lower than predetermined threshold 121, is carried out frequency and switched (can be maybe to switch to the multimedia messages broadcast source); If the first signal to noise ratio 1011 is lower than predetermined threshold 121, and the second signal to noise ratio 1021 switches to the second broadcast singal 102 during higher than predetermined threshold 121.
See also Fig. 6, it is the schematic diagram of the 3rd embodiment of broadcasting frequency switching device shifter of the present utility model.In the above-described embodiment, processing module 12 is all utilized signal to noise ratio comparison predetermined threshold, to judge whether to carry out the operation that broadcasting frequency is switched.In this embodiment, will illustrate and first utilize the predetermined threshold judgement, more directly each signal to noise ratio be compared, to determine whether to switch the execution mode of broadcasting frequency.
As shown in Figure 6, in this embodiment, suppose that vehicle-carried 20 are just receiving the first broadcast singal 101 at present with broadcast listening.Relevant implementation step is as follows:
S301: vehicle-carried 20 positioner 21 positions, to produce location coordinate information 211;
S302: processing module 12 receiving position coordinate informations 211, and read broadcasting channel table 110 in storage module 11;
S303: processing module 12 is according to location coordinate information 211, and each area coordinate information 1101a in comparison broadcasting channel table 110 is to find corresponding preset frequency 1101b;
S304: processing module 12 parses the first signal to noise ratio 1011 of the first broadcast singal 101, and judges that according to this whether it is lower than predetermined threshold 121; If the first signal to noise ratio 1011 continues to compare higher than 121 processing modules 12 of predetermined threshold;
S305: if the first signal to noise ratio 1011 is controlled tuner 10 lower than 121 processing modules of predetermined threshold 12, utilize the preset frequency 1100b that finds out, reconcile out the second broadcast singal 102; (should be noted, still dial and put the first broadcast singal 101 this moment vehicle-carried 20)
S306: processing module 12 parses the second signal to noise ratio 1021 of the second broadcast singal 102, and judges that according to this whether it is higher than the first signal to noise ratio 1011;
S3061: if the second signal to noise ratio 1021 lower than 1011 processing modules 12 of the first signal to noise ratio, broadcast singal is switched to vehicle-carried 20 multimedia messages broadcast source (can be the music that the driver sets up on their own) or continuing to dial puts the first broadcast singal 101;
S307: if the second signal to noise ratio 1021 is controlled tuner 10 higher than 1011 processing modules of the first signal to noise ratio 12, the preset frequency 1101b according to finding out reconciles out the second broadcast singal 102, to switch to the second broadcast singal 102; (meaning namely, tuner 10 is reconciled out the second broadcast singal 102, and dials by loud speaker and put its corresponding broadcasted content; Vernacular ground is said, switches exactly present broadcast singal).
Wherein, in step S3061, in another embodiment, whether continue comparison the second signal to noise ratios 1021 lower than the first signal to noise ratio 1011 if can be the second signal to noise ratio 1021 lower than 1011 processing modules of the first signal to noise ratio 12, and comparison time and interval can be adjusted according to user or actual state.
Briefly, when processing module 12 judged the first signal to noise ratios 1011 lower than predetermined threshold 121, processing module 12 was further compared the size of the first signal to noise ratios 1011 and the second signal to noise ratio 1021.If the first signal to noise ratio 1011 lower than the second signal to noise ratio 1021, switches to the second broadcast singal 102; If the first signal to noise ratio 1011 higher than the second signal to noise ratio 1021, is not switched operation (can be maybe to switch to vehicle-carried 20 multimedia messages broadcast source).
In addition, benly be, the judgment mode in the various embodiments described above, in actual applications, no matter which kind of judgment mode all needs one judgement period.Therefore in actual applications, when processing module 12 control tuners 10 were reconciled out the second broadcast singal 102 according to preset frequency 1101b, processing module 12 can be switching coordinate information 1102 with location coordinate information 211 records, and is stored in storage module 11.Switch coordinate information 1102 and can comprise switching coordinate figure (namely corresponding to above-mentioned location coordinate information 211) and switching frequency (namely corresponding to above-mentioned preset frequency 1101b).In other words, when if broadcasting frequency switching device shifter 1 carries out the broadcasting frequency switching in ad-hoc location, processing module 12 can be noted down the position coordinates (can be maybe an area coordinate) that switches and the frequency of switching immediately, by this when the driver sails described ad-hoc location into again, processing module 12 namely must not passed through above-mentioned judgement flow process, can directly control tuner 10 and switch relevant operation.
Just as above-mentioned, in actual applications, during processing module 12 receiving position coordinate information 211, can first search in storage module 11, whether has corresponding switching coordinate data, if corresponding switching coordinate information is arranged, directly control tuner 10 and reconcile out broadcast singal according to corresponding switching frequency.
The above; it is only embodiment of the present utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of described claim.
Claims (10)
1. a broadcasting frequency switching device shifter, be applied to have the vehicle-carried of positioner, it is characterized in that, described broadcasting frequency switching device shifter comprises:
One tuner is reconciled out the first broadcast singal according to present frequency;
One storage module has the broadcasting channel table, the area coordinate information of at least one broadcasting channel of broadcasting channel table record and preset frequency corresponding to described area coordinate information;
One processing module is electrically connected positioner and tuner, with the instant location coordinate information that produces of receiving positioner; Processing module is according to each area coordinate information in location coordinate information comparison storage module, to find the corresponding preset frequency of location coordinate information;
Wherein, processing module parses the first signal to noise ratio of the first broadcast singal, and judges that according to this whether described the first signal to noise ratio is lower than predetermined threshold; If the first signal to noise ratio is during lower than predetermined threshold, processing module is controlled tuner and is reconciled out the second broadcast singal according to the corresponding preset frequency of find, and processing module is with location coordinate information and find corresponding preset frequency and save as the switching coordinate information; When processing module receives another location coordinate information, first search in storage module according to this, whether has corresponding switching coordinate data, if have corresponding switching coordinate information, processing module is controlled tuner and is reconciled out corresponding broadcast singal according to the preset frequency of switching coordinate information.
2. broadcasting frequency switching device shifter according to claim 1, it is characterized in that, when processing module judgement the first signal to noise ratio during greater than predetermined threshold, processing module is according to the judgement time between 10 seconds to 60 seconds, to repeat to judge the size of the first signal to noise ratio and predetermined threshold.
3. broadcasting frequency switching device shifter according to claim 1, it is characterized in that, during lower than predetermined threshold, processing module parses the second signal to noise ratio of the second broadcast singal, and judges that according to this whether the second signal to noise ratio is greater than predetermined threshold when the first signal to noise ratio of processing module judgement the first broadcast singal; When processing module judged the second signal to noise ratio greater than predetermined threshold, processing module was controlled tuner and is reconciled out the second broadcast singal according to preset frequency.
4. broadcasting frequency switching device shifter according to claim 3, it is characterized in that, when processing module judgement the second signal to noise ratio during lower than predetermined threshold, processing module is according to the judgement time between 10 seconds to 60 seconds, to repeat to judge the size of the second signal to noise ratio and predetermined threshold.
5. broadcasting frequency switching device shifter according to claim 3, is characterized in that, lower than predetermined threshold, processing module switches to the multimedia messages broadcast source when processing module judgement the second signal to noise ratio.
6. broadcasting frequency switching device shifter according to claim 1, it is characterized in that, when the first signal to noise ratio of processing module judgement the first broadcast singal during lower than predetermined threshold, processing module parses the second signal to noise ratio of the second broadcast singal, and judges that according to this whether the second signal to noise ratio is greater than the first signal to noise ratio; If the second signal to noise ratio is during greater than the first signal to noise ratio, processing module is controlled tuner and is reconciled out the second broadcast singal according to preset frequency.
7. broadcasting frequency switching device shifter according to claim 6, it is characterized in that, when processing module judgement the second signal to noise ratio during lower than the first signal to noise ratio, processing module is according to the judgement time between 10 seconds to 60 seconds, to repeat to judge the size of the second signal to noise ratio and the first signal to noise ratio.
8. broadcasting frequency switching device shifter according to claim 6, is characterized in that, when processing module judged the second signal to noise ratio lower than the first signal to noise ratio, processing module switched to the multimedia messages broadcast source.
9. broadcasting frequency switching device shifter according to claim 1, is characterized in that, predetermined threshold is between 10 to 30 decibels.
10. broadcasting frequency switching device shifter according to claim 1, is characterized in that, processing module is microprocessor controller or central processing unit.
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| CN 201220687116 CN202978969U (en) | 2012-12-12 | 2012-12-12 | Broadcast frequency switching device |
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| CN 201220687116 CN202978969U (en) | 2012-12-12 | 2012-12-12 | Broadcast frequency switching device |
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| CN (1) | CN202978969U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141388A (en) * | 2014-06-05 | 2015-12-09 | 仁宝电脑工业股份有限公司 | Radio receiving device and frequency switching method of radio station |
| CN105280209A (en) * | 2014-07-01 | 2016-01-27 | 纬创资通股份有限公司 | Switching method and computer system |
| CN106471760A (en) * | 2014-11-10 | 2017-03-01 | 宝马股份公司 | Method and apparatus for receiving the broadcast service including the switching between DAB transmission and EMBMS transmission |
| CN106612125A (en) * | 2015-10-22 | 2017-05-03 | 微软技术许可有限责任公司 | Device for receiving broadcast and method |
-
2012
- 2012-12-12 CN CN 201220687116 patent/CN202978969U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141388A (en) * | 2014-06-05 | 2015-12-09 | 仁宝电脑工业股份有限公司 | Radio receiving device and frequency switching method of radio station |
| CN105280209A (en) * | 2014-07-01 | 2016-01-27 | 纬创资通股份有限公司 | Switching method and computer system |
| CN106471760A (en) * | 2014-11-10 | 2017-03-01 | 宝马股份公司 | Method and apparatus for receiving the broadcast service including the switching between DAB transmission and EMBMS transmission |
| CN106471760B (en) * | 2014-11-10 | 2019-04-30 | 宝马股份公司 | The method that broadcast service used for vehicles follows |
| CN106612125A (en) * | 2015-10-22 | 2017-05-03 | 微软技术许可有限责任公司 | Device for receiving broadcast and method |
| CN106612125B (en) * | 2015-10-22 | 2020-09-25 | 微软技术许可有限责任公司 | Apparatus and method for receiving broadcast |
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Granted publication date: 20130605 Termination date: 20171212 |