CN103095388A - Method and device for radio station automatic switchover and vehicle-mounted information entertainment system - Google Patents
Method and device for radio station automatic switchover and vehicle-mounted information entertainment system Download PDFInfo
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Abstract
The invention discloses a method and a device for radio station automatic switchover and a vehicle-mounted information entertainment system. The method includes the following steps: S101, comparing signal intensity of the listened radio station at present with a threshold value of the signal intensity of the radio station, and if the signal intensity of the listened radio station at present is not lower than the preset threshold value of the signal intensity of the radio station, keeping on playing the listened radio station at present, otherwise, conducting the next step, S102, judging positioning signal intensity, if the positioning signal intensity at present is weak, keeping on playing the listened radio station at present, and if the positioning signal intensity at present is strong, conducting radio station searching operation and listening operation. According to the method, the switchover condition that the signal intensity of the radio station is combined with the positioning signal intensity, thus accuracy of the automatic switchover of the radio station is improved, and the method is particularly suitable for the vehicle-mounted information entertainment system.
Description
Technical field
The present invention relates to the broadcast receiver field, be specifically related to a kind of radio station automatic switching method, device and vehicle-mounted information and entertainment system.
Background technology
Present wireless application is very general, and is also very extensive in the application of automotive field and mobile terminal.Traditional broadcast receiver, user search is behind a certain radio station, and broadcast receiver only fixedly is presented at this program of radio station on screen, and continues to play this radio station.
If broadcast receiver moves from the zone of radio station action scope outside the action scope of radio station in this radio station gradually, broadcast receiver receive the signal in this radio station will be more and more a little less than, the quality of broadcast receiver uppick is worse and worse.If entered into new radio station action scope in the driving process, the bad signal that do not have even will appear receiving in original radio signals, traditional broadcast receiver can not automatically refresh the new radio station of search and play, this moment, the user need to pass through manually channel selection again, complex operation, especially in automotive field, the car owner often operates channel selection simultaneously when driving, extremely inconvenience and affect driving safety.Simultaneously, traditional broadcast receiver is listened to the radio station type in radio station before not preserving after switching to new radio station, and broadcast receiver does not carry out the type division to each radio station in advance yet, when causing the user manually to reselect go back to the radio station that belongs to original classification, the operating time is long, and difficulty is large.Especially in automotive field, the driver needs the time and disperses energy to go channel selection again, brings certain potential safety hazard to driving.
(application number is 201010127602.5 to Chinese invention patent application, the applying date is on 03 05th, 2010) a kind of wireless channel switching method and device proposed, it is mainly that frequency of radio station corresponding to the program start time listened to by default plan and this program start time is as switching condition, by listening equipment according to program start time, with the radio reception frequency inverted to the corresponding frequency of radio station of this program start time.This technology has realized that switch in the radio station accurately.But as when switching condition satisfies, broadcast receiver is not in the radio signals overlay area of this predeterminated frequency point, can't listen to normally, so the method is due to the unicity of switching condition, cause range of application little, usually only be suitable for the broadcast receiver that is positioned at for a long time an administrative region.
(application number is 201010256170.8 to Chinese invention patent application, the applying date is on 08 17th, 2010) a kind of mobile terminal and radio station searching method and device proposed, this technology is mainly: the current location information that obtains mobile terminal by the mode that GPS locates, base station CELL ID locates or Wi-Fi locates, obtain the residing second area of described mobile terminal according to current location information, judge whether second area and first area under radio station before change, if change, again search for frequency of radio station corresponding to second area according to second area.The method has been utilized the administrative information region data of storage in mobile terminal, and the geographical position that obtains by the positioning function assembly on mobile terminal judges local terminal whether Inter-regional territory, thereby has realized the function in automatic switchover radio station.But only for judging the division of administrative region, it depends on the administrative information region data that mobile terminal is stored to the radio station switching condition of this application.Be in same administrative region for local terminal, but be positioned at the area outside radio station action scope (existing middle finger radio signals overlay area) outer or radio station action scope, even the station information that local terminal is received is very weak even without in the situation of listening to signal, owing to still not satisfying the described Inter-regional of the method territory switching condition, to still can't realize automaticallying switch, switch accuracy, sensitivity and real-time poor.And, the method is in automatically switching operation, preserve the type in the current radio station of listening to when being positioned at the first area, also do not carry out by type broadcasting station search and brush choosing when the new radio station of search, the user also need manually to select, search for and before radio station of the same type, the radio station of listening to.So there is technological deficiency in the method in practical application, be difficult to satisfy people to the requirements at the higher level of radio station intellectuality, hommization.
Also having a kind of prior art is by radio signals intensity threshold values being set as switching condition at local terminal,, switches and listens to operation during lower than radio signals intensity threshold values when the radio signals of listening in real time.But, this kind prior art has been ignored local device and has been existed transience to listen to the possibility of blind spot, area of weakness, as the radio reception module in vehicle-mounted information and entertainment system, when automobile process cavern, tunnel, will be considered as satisfying switching condition in prior art, practicality is not high.
Also have some radio station techniques to propose in prior art, as having introduced the technical characterictic of classified search when the broadcasting station search, also namely on the basis of having satisfied the radio station switching condition, search for by type when searching for new radio station, especially carry out new broadcasting station search according to the type in local terminal radio station of listening to before switching, thereby solved the existing defective that can't search classifiably of above-mentioned prior art.
In sum, existing radio station switching condition or be radio signals intensity threshold values, or be the Inter-regional territory, or for specifying the concrete listening period in concrete radio station, switching condition all is subjected to monistic limitation, exists the defective that switching condition is unreasonable, inaccurate, application is poor.The switching condition in radio station is a main trend of current radio station development, affects accuracy, reasonability and the practicality that switch in the radio station.In addition, how to carry out improving switching efficiency when switch in the radio station, the radio station type that user's uppick is more fast liked oneself is also the emphasis of radio station Study on Handover Technology.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of radio station automatic switching method is provided, the radio station switching condition that this method adopts radio signals intensity to combine with framing signal intensity improves the accuracy that automatic station switches.
The objective of the invention is to be achieved through the following technical solutions:
The radio station automatic switching method arranges a radio signals intensity comparing unit in advance on local device, method step is as follows:
S101. the more current radio signals intensity of listening to and radio signals strength threshold value, be not less than predefined radio signals strength threshold value as the current signal strength signal intensity of listening to the radio station, continues to play the current radio station of listening to, otherwise, carry out next step operation;
S102. judge framing signal intensity, if current framing signal is weak signal, continue to play the current radio station of listening to, if strong signal carries out broadcasting station search and listens to operation.
In such scheme, at first take radio signals strength threshold value as Rule of judgment, only in the situation that the current radio signals intensity of listening to lower than threshold value, next step switching judging work of Fang Jinhang, reduced the frequent degree that whole radio station handover operation starts, under the condition that satisfies radio signals strength threshold value, do not switch at once, but again according to the power of framing signal to judge whether to carry out follow-up handover operation.The mode that adopts this dual switching condition to combine has been avoided listening to blind spot, area of weakness and still carrying out the misoperation that switch in the radio station when local device is in transience.Simultaneously, it switches sensitivity and real-time and all is largely increased with respect to the Inter-regional territory condition switching mode in existing; With respect to the appointment switching frequency in existing with specify switching time, application is stronger.
Carry out the frequent degree of switching condition judgement for optimizing such scheme, the described more current radio signals intensity of listening to of step S101 and radio signals strength threshold value, be preferably in radio signals intensity comparing unit setting one and regularly compare the time, the more current radio signals intensity of listening to of timing ratio and radio signals strength threshold value, this timing ratio can be set as the case may be than the time.
In said method, step S102 is described to carry out broadcasting station search and listens to operation, broadcasting station search operation wherein can be adopted the mode of setting up server long-range, set up the station information database on remote server, by local terminal to remote server sending station searching request, remote server calls the station information database, to search out the station information that satisfies the broadcasting station search request and to feed back to local terminal, listens to for local terminal.Aforementioned mode for existing broadcasting station search, long-range mode of building storehouse and long-range search exists: the communication reliability problem of local terminal and remote server, communication delay problem; The problem that remote server data treating capacity and load capacity are large; The long-range wireless communication network challenge between this problem of Kucheng, remote server and a large amount of local device etc. of building.in addition, broadcasting station search mode in existing, mostly be randomness and search for effective radio station, or be conditional search, as the designated area, fail to propose to search classifiably by the radio station type, this also is based on, and local terminal is not preserved the current radio station type of listening to and existing middle station information is built the problem that the radio station type is not considered in the storehouse, though possessing the RDS radio station technique of auxiliary data of carrying (as the radio station type) is applied at home, but be still traditional station based on the most domestic radio station, its signal does not carry the radio station type, this just causes when searching for and switching to new radio station, fail to continue the described current radio station type of listening to, can not meet user's fast search and switch the needs in uppick same type radio station.Based on the existing defective of above-mentioned prior art, the present invention adopts following preferred version to solve:
The described broadcasting station search that carries out of step S102, being preferably the specified radio type is that condition is searched for; Correspondence design as technical scheme realizes arranges a station information database at local device, and this station information database stores frequency of radio station point and radio station type; At local terminal, one control unit is set, is used for calling the station information database according to specified radio type search condition, with search out satisfy search condition associated station information for listening to.
In above-mentioned preferred version, realized on the one hand the purpose that can search classifiably at local terminal, overcome in existing search technique, when being the traditional station of non-RDS as the radio station, because station information does not comprise the defective that can't know the radio station type in Search Results that the radio station type causes, and make the present invention be satisfied with the classified search in all radio station, be particularly useful for the large present status in China of traditional station accounting.simultaneously, in above scheme, be different from existing in the scheme of station information Database at remote server, at local terminal, one memory cell is set and builds the storehouse with this locality of realizing the station information data, complete relevant broadcasting station search by the control unit of being located at equally local terminal according to search condition, listen to again operation, thereby the station information search that has realized satisfying search condition is completed at local terminal, improved search efficiency, avoided that prior art is long-range builds this problem of Kucheng of building that the storehouse scheme produces, the communication reliability problem, the excessive server that easily causes of load capacity and data processing amount damages, so that impact search success rate problem, and the search efficiency problem that causes due to telecommunication time-delay.Simultaneously, in prior art owing to being limited by the conventional art present situation, and/or the existing local terminal limitation that memory capacity originally has when design, all station information is built the storehouse at remote server, and the problem such as the load capacity that reckons without remote server is large and communication reliability is low, the present invention builds the storehouse in local device with station information, and the search link is completed by the local terminal control unit, no matter feed back the aspects such as rapid in cost control, reliable communications, search, all be greatly improved, convenient and swift, have significant technique effect and Economic Application prospect.
As further preferred, described control unit calls the station information database according to described search condition, search out the associated station information that satisfies search condition, the associated station information that meets specified radio type search condition is generally the associated station information aggregate that a plurality of station information form, the action scope that there is some radio station in set does not cover the possibility of local terminal current location of living in, so that can not effectively listen to.So, the present invention is after the set that searches out the associated station information composition that satisfies search condition, the local device current location that control unit also passes through to obtain is as condition, brush is selected radio station that radio station action scope in the associated station information aggregate covered described local device current location and is listened to operation for follow-up, the correspondence that realizes as technology designs, described station information database is except storing frequency of radio station point and radio station type, also store the radio station action scope, this radio station action scope comprises the radio signals overlay area.
in existing, brush is selected the radio station action scope that is complementary with the local device current location from the station information database, this radio station action scope is directly all the radio signals overlay area, due to the radio signals overlay area in practice, be subjected to transmission directivity, the impact that transmission environment and other signals disturb, mostly be irregularly shaped zone, when this just makes direct employing local device current location and radio signals overlay area coupling calculate, computing formula is complicated, excessive to cause the performance requirement of search unit, especially when adopting the remote server search, due to One's name is legion, this performance requirement will be very outstanding, also embodied thus the high-lighting advantage that search procedure of the present invention is arranged on local terminal.For further simplifying search procedure, reduce the requirement to the search unit performance, the above-mentioned local device current location of utilizing is carried out the preferred version of effective radio station brush choosing as condition, is specially:
S103-1. brush is selected the station information subset that scope minimum boundary rectangle in radio station has covered described local device current location from described associated station information aggregate, and scope minimum boundary rectangle in described radio station is radio signals coverage area boundaries point take latitude and longitude value as rectangle that tolerance was formed;
S103-2. brush is selected the radio signals coverage and has been covered the station information of described local device current location for listening to from described station information subset;
In this preferred version, described station information database is except comprising frequency of radio station point, radio station type and radio signals overlay area, and described radio station action scope has also comprised the minimum boundary rectangle of radio station scope.
The technological selection of above effective radio station double layer area search, core has been to propose the concept of the minimum boundary rectangle of radio station scope, the judgement that whether covers in advance with the rectangle of systematicness, the judgement whether it covers with respect to erose radio signals overlay area, amount of calculation greatly reduces, and mapping speed is faster.
In the technological selection of above-mentioned effective radio station double layer area search, brush from the station information subset at step S103-2 and select the station information that the radio signals coverage has covered described local device current location, this station information also may be a plurality of radio station, for realizing best audibility, store the radio station location point by setting up in the station information database, control unit is found out station location point and local device current location nearest radio station, to listen to.
Second purpose of the present invention is to provide a kind of radio station automatic switching control equipment, it is characterized in that, comprising:
Memory cell is used at local terminal store electricity station information database;
Positioning unit is used for obtaining equipment current location information and framing signal;
Be arranged at the radio signals intensity comparing unit of local terminal, the more current radio signals intensity of listening to and radio signals strength threshold value, lower than predefined radio signals strength threshold value, activate the framing signal strength ratio than cell operation as the current signal strength signal intensity of listening to the radio station;
Be arranged at the framing signal intensity comparing unit of local terminal, after the radio signals strength ratio is than unit activating, judgement framing signal intensity, if current framing signal is strong signal, the output switching order is to control unit;
Be arranged at the control unit of local terminal, receive switching command to carry out broadcasting station search and to listen to operation.
Above scheme has realized that also the local terminal station information builds the function of storehouse and search except the advantage that possesses aforementioned searching method and possess.
Preferably, described radio signals intensity comparing unit is regularly comparing unit.
Search for the preferred of judgement as a kind of, described control unit carries out broadcasting station search and listens to operation according to default search condition, and described default search condition is current radio station type.Control unit is provided with:
The first search module searches out the associated station information aggregate according to search condition;
The second search module, brush is selected the station information subset that scope minimum boundary rectangle in radio station has covered described local device current location from described associated station information aggregate;
The 3rd search module, brush is selected the station information that the radio signals coverage has covered described local device current location from described station information subset;
In this preferred version, described station information database has comprised frequency of radio station point, radio station type and radio signals overlay area and the minimum boundary rectangle of scope, also claims the radio station action scope to comprise radio signals overlay area and the minimum boundary rectangle of scope.
For realizing the renewal of station information database in the local terminal memory cell, described broadcasting station search device also can be provided with wireless update module, it is connected with the remote server radio communication, remote server storage has the station information data bank of real-time update, wireless update module is obtained up-to-date station information data from remote server, and is updated to memory cell.
The present invention also aims to provide a kind of vehicle-mounted information and entertainment system, it is characterized in that, this system comprises described broadcasting station search device, wherein, described control unit, memory cell all are carried in on-vehicle host, the navigation positioning module in positioning unit directly employing system; Native system also is provided with human-computer interaction interface, for providing man-machine interaction between control unit and user.Native system utilizes data-handling capacity and the data storage capacities of on-vehicle host itself on the one hand, optimized system resource, on the other hand, man-machine interaction unit directly adopts touch screen, provides the search condition interface display of enough widescreens and search result interfaces to show to the user.And the navigation positioning module in positioning unit directly employing system has further embodied resource and has taken full advantage of rate.When the present invention is applied in vehicle-mounted information and entertainment system, except the advantage of having given prominence to above-mentioned resource optimization, also avoided in prior art, travelled because vehicle is in for a long time, the problem of the poor and poor reliability of the large telecommunication validity that causes of signal intensity.
The present invention has the following advantages and beneficial effect compared to existing technology:
(1) the radio station switching condition that combines with framing signal intensity of radio signals intensity of the present invention improves accuracy, reasonability and real-time that automatic station switches;
(2) the preferred search condition of the present invention for identical with the current radio station type of listening to, facilitates the user to listen to fast similar radio station;
(3) the present invention by adopting the technological selection of fixed-position searching, has improved validity and the real-time of Search Results;
(4) the present invention is by adopting the double-deck preferred version of searching for of the minimum boundary rectangle of radio station scope and radio signals overlay area, the high efficiency of search procedure in having realized switching;
(5) the present invention by search procedure, radio station switching and station information are built the storehouse in local terminal, has improved search, switching efficiency, has avoided the long-range storehouse defective that scheme produces of building of prior art; In conjunction with aforementioned the 2nd section of advantage, embodied the present invention applicable to RDS radio station and traditional station;
(6) the present invention can be by arranging a wireless update module, and remote server can be realized the renewal of local terminal station information database only as up-to-date station information data back;
When (7) the present invention is applied in vehicle-mounted information and entertainment system, because automatic switching control equipment each hardware in radio station all can directly load or utilize the existing hardware device of vehicle-mounted information and entertainment system itself, optimized resource utilization, promoted practical.
Description of drawings
Fig. 1 is the system architecture diagram of the present invention when being applied to vehicle-mounted information and entertainment system;
Fig. 2 is the structure principle chart of microprocessor;
Fig. 3 is the overall flow figure that automaticallyes switch in the radio station;
Fig. 4 is the flow chart of the similar search in radio station.
Embodiment
Method after the below has adopted category division preferred to the present invention reaches in conjunction with the embodiments accompanying drawing and be described in further detail, but embodiments of the present invention is not limited to this.
Generally speaking, the present invention mainly conceives the radio station switching condition that adopts radio signals strength threshold value to combine with framing signal intensity in the switching condition of radio station, avoided in prior art, listen to blind spot, area of weakness and still carry out the misoperation that switch in the radio station when local device is in transience, improve accuracy, reasonability and real-time that automatic station switches.In addition, switching device shifter provided by the invention, its search procedure and build the storehouse and all concentrate on local terminal has been avoided the long-range storehouse defective that scheme produces of building of prior art.And adopt the search condition of specifying current radio station type, make the present invention be applicable to RDS radio station or other traditional station.To sum up, also make the present invention be particularly useful for vehicle-mounted information and entertainment system.
The present invention is described in further detail in the embodiment of vehicle-mounted information and entertainment system and accompanying drawing below in conjunction with the broadcasting station search application of installation, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, vehicle-mounted information and entertainment system comprises:
Memory cell is used at local terminal store electricity station information database;
Touch screen, the man-machine interaction unit as between radio station automatic switching control equipment and user provides man-machine interaction;
Microprocessor, as Bootload and the operating component of broadcasting station search device, the work of each functional unit and data, instruction interaction in the coordination vehicle-mounted information and entertainment system;
Navigation positioning module as the positioning unit in the automatic switching control equipment of radio station, is obtained equipment current location information and framing signal, and it is connected with positioning antenna;
Wireless update module, be connected with remote server (not shown) radio communication by radio antenna, remote server storage has the station information data bank of real-time update, wireless update module is obtained up-to-date station information data from remote server, and be updated to memory cell, it is pointed out that the present invention in use, remote server can be only as up-to-date station information data back;
Tuner is connected with reception antenna, listens to radio signals with tuning manner;
Audio process is connected with loud speaker, is used for audio frequency output.
As described in Figure 2, microprocessor is provided with:
Radio signals intensity is comparing unit regularly, the more current radio signals intensity of listening to of timing ratio and radio signals strength threshold value, lower than predefined radio signals strength threshold value, activate the framing signal strength ratio than cell operation as the current signal strength signal intensity of listening to the radio station;
Framing signal intensity comparing unit, after the radio signals strength ratio is than unit activating, judgement framing signal intensity, if current framing signal is strong signal, the output switching order is to control unit;
Control unit receives switching command carrying out broadcasting station search and to listen to operation, and be provided with: the first search module searches out the associated station information aggregate according to search condition; The second search module, brush is selected the station information subset that scope minimum boundary rectangle in radio station has covered described local device current location from described associated station information aggregate; The 3rd search module, brush is selected the station information that the radio signals coverage has covered described local device current location from described station information subset.
In the present embodiment, described station information database adopts information row form to build the storehouse, and scope can be the whole nation, the whole province or builds the storehouse according to actual needs, and the station information row use the Sqlite embedded database to realize, each station information row comprises following field:
Radio station index value (RadioIndex): this field is used for as radio station unique index value; Data type: integer;
Frequency of radio station point (RadioFreq): this field is used for recording frequency of radio station; Data type: floating type, for example: 97.1;
The minimum boundary rectangle (RadioRect) of radio station scope: this field is used for recording the minimum boundary rectangle longitude and latitude minimum value of radio station scope and maximum; Data type: character string, for example: 116.2,38.4,118.3,40.12;
Radio signals overlay area Polygon (RadionPolygon): this field is used for recording the polygonal boundary point of radio station scope; Data type: character string, for example: 116.2,38.4,116.2,40.12,118.3,40.12;
Radio station type (RadioType): this field is used for recording the radio station type, for example: music, traffic, physical culture etc.; Data type: integer, for example: 1: music; 2: traffic; 3: physical culture;
Station location point (RadioPosition): this field is used for recording the station location latitude and longitude value; Data type: character string, for example: 117.5,38.9;
The detailed program inventory in radio station; Etc..
The automatic concrete grammar in radio station of the present invention below is described in detail in detail, but following be only the comparatively concrete preferred version of method, in concrete enforcement, can according to circumstances be optimized some operation or condition.
The radio station automatic switching method, as shown in Figure 3, step is as follows:
S101. take 3 seconds as the interval, the more current radio signals intensity of listening to of timing ratio and radio signals strength threshold value are not less than predefined radio signals strength threshold value as the current signal strength signal intensity of listening to the radio station, continue to play the current radio station of listening to, otherwise, carry out next step operation;
S102. judge framing signal intensity, if current framing signal is weak signal, continue to play the current radio station of listening to, if strong signal carries out broadcasting station search and listens to operation.
In said method, do not satisfy to stop next step operation as condition, finish.
In said method, as shown in Figure 4, broadcasting station search is as follows with the operation of listening to:
The S103-1 control unit obtains mobile unit current location and the current radio station type of listening to;
The first search module in the S103-2 control unit receives the search condition of this specified radio type, call the station information database from memory cell, search corresponding index, (the present embodiment is preset as the whole country) this kind all relevant station information set Record1 of radio station in certain limit in inquiry, query statement is as follows: " SELECT*FROM RadioPostion WHERE RadioType=1 ";
The second search module in the S103-3 control unit uses scope minimum boundary rectangle condition in radio station to filter: filter out the mobile unit current location at the station information subset Record2 of the minimum boundary rectangle of radio station scope inside from station information set Record1, for example: the minimum boundary rectangle of certain radio station scope is: 116.2,38.4,118.3,40.12; If current location is 116.3,39.6, current location is inner at minimum boundary rectangle, is considered as the minimum boundary rectangle of radio station scope and has covered the mobile unit current location;
The 3rd search module in the S103-4 control unit uses radio signals overlay area Polygon condition to filter: filter out the mobile unit current location and drop on the Record3 that records in this radio station scope from station information subset Record2, then this is recorded Record3;
S103-5 is in the station information database, and control unit is found out station location point and local device current location nearest radio station, realizes that by tuner and audio process, loud speaker the follow-up operation of listening to listens to according to its frequency.
In said method, without eligible record, directly show issueless information, so far EO to touch screen as arbitrary search.
Above-described embodiment is the better execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (10)
1. the radio station automatic switching method, is characterized in that, a radio signals intensity comparing unit is set on local device in advance, and method step is as follows:
S101. the more current radio signals intensity of listening to and radio signals strength threshold value, be not less than predefined radio signals strength threshold value as the current signal strength signal intensity of listening to the radio station, continues to play the current radio station of listening to, otherwise, carry out next step operation;
S102. judge framing signal intensity, if current framing signal is weak signal, continue to play the current radio station of listening to, if strong signal carries out broadcasting station search and listens to operation.
2. radio station automatic switching method according to claim 1, it is characterized in that: the described more current radio signals intensity of listening to of step S101 and radio signals strength threshold value, for setting timing ratio than the time at radio signals intensity comparing unit, the more current radio signals intensity of listening to of timing ratio and radio signals strength threshold value.
3. radio station automatic switching method according to claim 2, it is characterized in that: step S102 is described to carry out broadcasting station search and listens to operation, searches for take the specified radio type as condition; At local device, one station information database is set, this station information database stores frequency of radio station point and radio station type; At local terminal, one control unit is set, is used for calling the station information database according to specified radio type search condition, search out satisfy search condition associated station information for listening to.
4. radio station automatic switching method according to claim 3, it is characterized in that: after the set that searches out the associated station information composition that satisfies search condition, the local device current location that control unit also passes through to obtain is as condition, brush is selected radio station that radio station action scope in the associated station information aggregate covered described local device current location and is listened to operation for follow-up, described station information database stores the radio station action scope, and this radio station action scope comprises the radio signals overlay area.
5. radio station automatic switching method according to claim 4, it is characterized in that: the above-mentioned local device current location of utilizing is carried out the brush choosing of effective radio station as condition, is specially:
S103-1. brush is selected the station information subset that scope minimum boundary rectangle in radio station has covered described local device current location from described associated station information aggregate, and scope minimum boundary rectangle in described radio station is radio signals coverage area boundaries point take latitude and longitude value as rectangle that tolerance was formed;
S103-2. brush is selected the radio signals coverage and has been covered the station information of described local device current location for listening to from described station information subset;
Described radio station action scope also comprises the minimum boundary rectangle of radio station scope.
6. radio station automatic switching method according to claim 5 is characterized in that: set up the storage station location in the station information database, control unit is found out the station location point radio station nearest with the local device current location, to listen to.
7. the radio station automatic switching control equipment, is characterized in that, comprising:
Memory cell is used at local terminal store electricity station information database;
Positioning unit is used for obtaining equipment current location information and framing signal;
Be arranged at the radio signals intensity comparing unit of local terminal, the more current radio signals intensity of listening to and radio signals strength threshold value, lower than predefined radio signals strength threshold value, activate the framing signal strength ratio than cell operation as the current signal strength signal intensity of listening to the radio station;
Be arranged at the framing signal intensity comparing unit of local terminal, after the radio signals strength ratio is than unit activating, judgement framing signal intensity, if current framing signal is strong signal, the output switching order is to control unit;
Be arranged at the control unit of local terminal, receive switching command to carry out broadcasting station search and to listen to operation.
8. radio station automatic switching control equipment according to claim 7 is characterized in that: described radio signals intensity comparing unit is comparing unit regularly.
9. radio station automatic switching control equipment according to claim 8, is characterized in that, described control unit carries out broadcasting station search and listens to operation according to default search condition, and default search condition is current radio station type; Control unit is provided with:
The first search module searches out the associated station information aggregate according to search condition;
The second search module, brush is selected the station information subset that scope minimum boundary rectangle in radio station has covered described local device current location from described associated station information aggregate;
The 3rd search module, brush is selected the station information that the radio signals coverage has covered described local device current location from described station information subset;
Described station information database has comprised frequency of radio station point, radio station type and radio signals overlay area and the minimum boundary rectangle of scope.
10. vehicle-mounted information and entertainment system, it is characterized in that: described system comprises the described broadcasting station search device of claim 7 to 9 any one, wherein, described control unit, memory cell all are carried in on-vehicle host, the navigation positioning module in locating module directly employing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210585496.4A CN103095388B (en) | 2012-12-30 | 2012-12-30 | Radio station automatic switching method, device and vehicle-mounted information and entertainment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210585496.4A CN103095388B (en) | 2012-12-30 | 2012-12-30 | Radio station automatic switching method, device and vehicle-mounted information and entertainment system |
Publications (2)
| Publication Number | Publication Date |
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| CN103095388A true CN103095388A (en) | 2013-05-08 |
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| CN104753621A (en) * | 2013-12-25 | 2015-07-01 | 博世汽车部件(苏州)有限公司 | Microprocessor, system and method for channel switching of vehicle radio |
| CN104868964A (en) * | 2014-12-19 | 2015-08-26 | 北汽福田汽车股份有限公司 | Automatic on-board radio channel switching system and method |
| CN104917578A (en) * | 2014-03-10 | 2015-09-16 | 昆山研达电脑科技有限公司 | Transregional automatic radio station switching method for vehicle-mounted radio |
| CN109361412A (en) * | 2018-11-23 | 2019-02-19 | 广东电网有限责任公司 | Vehicle-mounted radio automatic frequency adjustment device and method based on geographical location |
| CN109450580A (en) * | 2018-12-28 | 2019-03-08 | 斑马网络技术有限公司 | Vehicle-mounted radio control method, device, vehicle-mounted radio and vehicle |
| CN109586828A (en) * | 2018-11-29 | 2019-04-05 | 深圳市车联天下信息科技有限公司 | Broadcast station information acquisition methods, device and radio |
| CN110858785A (en) * | 2018-08-23 | 2020-03-03 | 安波福电子(苏州)有限公司 | Intelligent updating system and method for pre-stored radio station of vehicle-mounted broadcast |
| CN110858784A (en) * | 2018-08-23 | 2020-03-03 | 安波福电子(苏州)有限公司 | Automatic switching system and method for vehicle-mounted broadcasting station |
| CN113890661A (en) * | 2021-08-27 | 2022-01-04 | 惠州华阳通用电子有限公司 | Radio station switching method based on digital signal broadcasting |
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| CN104753621A (en) * | 2013-12-25 | 2015-07-01 | 博世汽车部件(苏州)有限公司 | Microprocessor, system and method for channel switching of vehicle radio |
| CN104753620A (en) * | 2013-12-31 | 2015-07-01 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN104917578A (en) * | 2014-03-10 | 2015-09-16 | 昆山研达电脑科技有限公司 | Transregional automatic radio station switching method for vehicle-mounted radio |
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| CN110858785A (en) * | 2018-08-23 | 2020-03-03 | 安波福电子(苏州)有限公司 | Intelligent updating system and method for pre-stored radio station of vehicle-mounted broadcast |
| CN110858784A (en) * | 2018-08-23 | 2020-03-03 | 安波福电子(苏州)有限公司 | Automatic switching system and method for vehicle-mounted broadcasting station |
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| CN109586828A (en) * | 2018-11-29 | 2019-04-05 | 深圳市车联天下信息科技有限公司 | Broadcast station information acquisition methods, device and radio |
| CN109450580A (en) * | 2018-12-28 | 2019-03-08 | 斑马网络技术有限公司 | Vehicle-mounted radio control method, device, vehicle-mounted radio and vehicle |
| CN113890661A (en) * | 2021-08-27 | 2022-01-04 | 惠州华阳通用电子有限公司 | Radio station switching method based on digital signal broadcasting |
| CN113890661B (en) * | 2021-08-27 | 2024-02-02 | 惠州华阳通用电子有限公司 | Radio station switching method based on digital signal broadcasting |
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