CN103078696B - Broadcasting-station searching method, broadcasting-station searching device and vehicular information entertainment system - Google Patents
Broadcasting-station searching method, broadcasting-station searching device and vehicular information entertainment system Download PDFInfo
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- CN103078696B CN103078696B CN201210585896.5A CN201210585896A CN103078696B CN 103078696 B CN103078696 B CN 103078696B CN 201210585896 A CN201210585896 A CN 201210585896A CN 103078696 B CN103078696 B CN 103078696B
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Abstract
The invention relates to a broadcasting-station searching method, a broadcasting-station searching device and a vehicular infotainment system, wherein the broadcasting-station searching method comprises the following steps of: preliminarily establishing a storage unit for loading a broadcasting-station information database at a local terminal, and setting a broadcasting-station searching condition through a human-computer interaction interface of the local terminal; and searching out related broadcasting-station information sets meeting the searching condition according to the searching condition through a control unit arranged at the local terminal, and then displaying on the human-computer interaction interface. According to the invention, the finish of condition input and condition searching at the local terminal is realized by arranging a searching process at the local terminal, so that the searching efficiency is improved, and defects caused by a remote database-establishing scheme in the prior art are avoided; in addition, the high efficiency of the searching process is realized by adopting a preferred scheme of double-laying searching at a minimum rectangle beyond the range of a broadcasting station and the coverage area of broadcasting-station signals; and when the broadcasting-station searching device is applied to the vehicular infotainment system, because each hardware of the broadcasting-station searching device can be directly loaded or existing hardware equipment of the vehicular infotainment system per se is utilized, the utilization ratio of resources is optimized.
Description
Technical field
The present invention relates to broadcasting station search technology, particularly relate to a kind of radio station searching method, broadcasting station search device and vehicle-mounted information and entertainment system.
Background technology
Broadcast receiver is the platform that people carry out amusement and obtain information, and current wireless application is widely, also very general in the application of automotive field and mobile terminal.Along with the progress of science and technology, wireless performance significantly improves, and the number in radio station constantly increases, and radio content becomes increasingly abundant.
(application number is 200810093939.1 to Chinese invention patent application, the applying date is on April 23rd, 2008) propose a kind of method of carrying out broadcasting station search in wireless terminal, it is in the automatic Searching of existing radio station, due to the interference of external environment condition, be difficult to search local all program of radio station and be only limitted to know frequency of radio station point, manually need carry out the defect of Frequency point radio station name, by arranging remote server, by wireless terminal by sending the mode of designated area broadcasting station search request, the radio station classification inventory matched from server acquisition radio station action scope (signal coverage areas in existing middle finger radio station) and designated area and/or radio station detailed program inventory, thus achieve the associated station searched out in all standby presence servers in appointed area, automatically the object of associated station title is known.
But such scheme, in broadcasting station search process and result, does not carry out division display to the classification (as by news, music, literature, economy, traffic) in radio station, is unfavorable for that audient judges fast and selects to listen to the radio station of liking, simultaneously, station information database is based upon in remote server, due to the objective defect of wireless communication link reliability and stability, local device and the direct information interaction of remote server are subject to the impact of communication environment larger, in the place that some communication environments are poor, completing fast of search operation is realized by being difficult to, also just owing to building storehouse at remote server, in current multimedia radio station, as mobile terminal radio station, car-mounted terminal radio station and other equipment carry the present situation popularized in a large number in radio station, greatly will consume wireless communication resources, remote server builds storehouse load capacity and power consumption all needs satisfied great requirement, and the time delay of telecommunication also reduces the efficiency of whole search procedure.
(application number is 200910306180.5 to Chinese invention patent application, the applying date is on August 27th, 2009) propose a kind of method of searching broadcasting station for multimedia product, it is also by arranging remote server, by the radio station receiver of local device according to area or the search condition of classification, obtain from remote server meet search condition station information for local device screening and listen to.The method classified search in radio station relative to aforementioned existing techniques in realizing, improves audient and judges and select to listen to the speed liking radio station.But this broadcasting station search scheme still unresolved aforementioned station information builds storehouse in the defect existing for remote server, is unfavorable for applying.
In sum, the search technique development trend in radio station is mainly by classified search to realize providing classification display and the function selected to user.Although along with the development of science and technology, the RDS radio station of carrying auxiliary data (as station genre) when passing on radio signals obtains application in China, but most domestic radio station great majority are still for being different from the traditional station of RDS at present, it does not possess and carries auxiliary data (as program of radio station detailed bill, station genre etc.), above-mentioned the second prior art could obtain station genre when must be applied in RDS broadcasting station search, to meet the needs that user fast, accurately selects to listen to institute's preference type radio station, the prior art is made to promote practicality not high.So how still can carry out searching classifiably and showing when searching for traditional station, judging to improve audient and selecting to listen to the speed liking radio station, be still technology required perfect in the industry.
Simultaneously, station information in prior art all builds storehouse at remote server, no matter its information interaction reliability existed, search efficiency and the defect that server load amount is large, cost is high, be applied in search traditional station or RDS radio station is all anxious to be modified.
Meanwhile, the progress of science and technology and diversification life style, making radio station mostly in frequency of utilization is at vehicle-mounted information and entertainment system, this just determines radio station technique and is mainly based upon vehicular platform and researches and develops, vehicle-mounted radio is relative to mobile terminal or free-standing broadcast receiver, it has the strong feature of mobility, reduce further the communication efficient (if automobile is in remote districts or tunnel) of local device and remote server; Meanwhile, in vehicle travels, user can carry out time of equipment operating and frequency limitation is comparatively large, this just require broadcasting station search system need meet search and select fast, feature easily, prior art still needs to improve in this respect.
In prior art, no matter the condition of broadcasting station search is be designated area, or specified radio type, it is all according to this search condition, no matter will be stored in qualified all station information in remote server and directly feed back to local device, be remote server or local device, all do not carry out Effective judgement to the radio station of feedback, so that cause user when carrying out concrete radio station and selecting, there is the risk that selected radio station can not effectively be listened to.For solving this defect of prior art, broadcasting station search device of the present invention is also provided with one for the positioning unit of Real-time Obtaining equipment current location information, after control unit receives search condition, except search condition, also according to radio station scope minimum enclosed rectangle and radio signals overlay area, whether overlay device current location is searched for as condition, mate as a kind of technology, described station information database contains frequency of radio station point, radio station scope minimum enclosed rectangle and radio signals overlay area.Overcome Search Results validity problem existing in existing search with this, decrease artificial vision and mechanically operated frequency simultaneously, improve automatization level.
Search for the preferred of judgement as a kind of, described control unit is provided with:
First search module, the search condition according to human-computer interaction interface input searches out associated station information aggregate;
Second search module, filters out the station information subset that radio station scope minimum enclosed rectangle covers described local device current location from described associated station information aggregate;
3rd search module, filters out the station information that radio signals coverage covers described local device current location from described station information subset;
In this preferred version, described station information database contains frequency of radio station point, radio signals overlay area and scope minimum enclosed rectangle.
For realizing the renewal of station information database in local device memory cell, described broadcasting station search device also can be provided with wireless update module, it is connected with remote server radio communication, remote server storage has the station information data bank of real-time update, wireless update module obtains 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 are all carried in on-vehicle host, described human-computer interaction interface directly adopt vehicle-mounted on touch screen.Due to, utilize on the one hand and the data-handling capacity of on-vehicle host itself and data storage capacities, optimize system resource, on the other hand, man-machine interaction unit directly adopts touch screen, provide the user search condition display and the Search Results display interface of enough widescreens.
When the broadcasting station search device that vehicle-mounted information and entertainment system comprises is provided with positioning unit, the navigation positioning module in this positioning unit directly employing system, embodies resource further and makes full use of rate.
When the present invention is applied in vehicle-mounted information and entertainment system, except highlighting the advantage of above-mentioned resource optimization, also avoid in prior art, because vehicle is in traveling for a long time, due to the problem of large the caused telecommunication validity and reliability difference of signal conversion.
The present invention has the following advantages and beneficial effect compared to existing technology:
(1) the present invention is by being arranged at local device broadcasting station search device by search procedure, thus achieve search condition input, meet search condition station information search all complete at local device, improve search efficiency, avoid that prior art is long-range builds storehouse defect that scheme produces;
(2) search condition preferably can be appointed as station genre by the present invention, achieves user and finds favorite radio station fast, in conjunction with aforementioned first item advantage, embodies the present invention and is applicable to RDS radio station and traditional station;
(3) the present invention is by adopting the technological selection of fixed-position searching, improves validity and the real-time of Search Results;
(4) the present invention is by adopting the preferred version of the external minimum rectangle of radio station scope and the dual search in radio signals overlay area, achieves the high efficiency of search procedure;
(5) the present invention is by arranging a wireless update module, and remote server is only as up-to-date station information data back, can realize the renewal of local device station information database;
(6), when the present invention is applied in vehicle-mounted information and entertainment system, because each hardware of broadcasting station search device all can directly load or utilize the existing hardware device of vehicle-mounted information and entertainment system itself, optimizes resource utilization, promote practical.
Summary of the invention
The object of the invention is to overcome shortcomings and deficiencies of the prior art, there is provided a kind of radio station searching method, it is carried out the search process of station information by station information is built storehouse in local device by local device, improve search efficiency, avoid the long-range defect of building storehouse scheme and producing of prior art.
The object of the invention is to be achieved through the following technical solutions: radio station searching method, is characterized in that, set up one for loading the memory cell of station information database at local device, searching method is as follows:
S101. a broadcasting station search condition is set by the human-computer interaction interface of a local device;
S102. by being arranged at the control unit of local device, from memory cell, calling station information database according to described search condition, to search out the associated station information aggregate meeting search condition, and Search Results being carried out human-computer interaction interface display.
In above scheme, be different from existing middle by the scheme of station information Database at remote server, one memory cell is set at local device and builds storehouse with this locality realizing station information data, completed the search of associated station information aggregate according to the search condition that human-computer interaction interface inputs by the control unit being located at local device equally, again Search Results is shown by human-computer interaction interface, thus achieve the input of search condition, the station information search meeting search condition all completes at local device, improve search efficiency, avoid prior art long-range build that storehouse scheme produces build storehouse Cost Problems, reliable communications sex chromosome mosaicism, load capacity and the excessive server that easily causes of data processing amount damage, so that impact search success rate problem, and the search efficiency problem to cause due to telecommunication time delay, simultaneously, owing to being limited by conventional art present situation in prior art, and/or the existing local device limitation that memory capacity originally has when designing, all station information is built storehouse at remote server, and reckon without the problems such as the load capacity of remote server is large and communication reliability is low, station information is built storehouse in local device by the present invention, and search link is completed by local device control unit, no matter controlling cost, reliable communications, the aspects such as search feedback is rapid, be obtained for and significantly improve, the input of search condition, search are changed part, interface display and mutual data command and are local device alternately and complete, convenient and swift, have significant technique effect and Economic Application prospect.
Preferably, in said method, described in step S101, broadcasting station search condition is specially specified radio type, and described station information database contains frequency of radio station point and station genre.Thus achieve and can carry out at local device the object that searches classifiably, overcome in existing search technique, as radio station be the traditional station of non-RDS time, because station information does not comprise the defect cannot knowing station genre in Search Results that station genre causes, and make the present invention be satisfied with the classified search in all radio station, be particularly useful for the present status in China that traditional station accounting is large.
In said method, station information database described in step S102 contains frequency of radio station point, radio station scope minimum enclosed rectangle and radio signals coverage, when this preferred version is the broadcasting station search condition based on aforementioned specified radio type, described station information database further comprises station genre.
Due to radio signals overlay area in practice, by the impact of transmission directivity, transmission environment and other signal disturbing, mostly be irregularly shaped region, when this just makes directly to adopt and specifies region and radio signals overlay area matching primitives, computing formula is complicated, excessive to cause the performance requirement of search unit, especially when adopting remote server search, due to One's name is legion, this performance requirement will be very outstanding, also embody the high-lighting advantage that search procedure of the present invention is arranged on local device thus.For simplifying search procedure further, reduce the requirement to search unit performance, the above-mentioned local device current location that utilizes, as condition, is carried out the preferred version of effective radio station screening, is specially:
S103-1. from described associated station information aggregate, filter out the station information subset that radio station scope minimum enclosed rectangle covers described local device current location, described radio station scope minimum enclosed rectangle for radio signals coverage area boundaries point be the rectangle that tolerance forms with latitude and longitude value;
S103-2. from described station information subset, filter out the station information that radio signals coverage covers described local device current location, feed back to human-computer interaction interface as Search Results.
Above scheme, core is the concept proposing radio station scope minimum enclosed rectangle, carries out the judgement whether covered with the rectangle of systematicness in advance, and it carries out the judgement whether covered relative to difform radio signals overlay area, amount of calculation greatly reduces, and maps speed faster.
Second object of the present invention is to provide a kind of broadcasting station search device, it is characterized in that, comprising:
Memory cell, at local device store electricity station information database;
Human-computer interaction interface, for providing man-machine interaction between control unit and user, inputs containing search condition;
Control unit, calls memory cell according to search condition and searches out associated station information aggregate, and Search Results is presented in human-computer interaction interface.
Accompanying drawing explanation
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 schematic flow sheet of radio station searching method of the present invention.
Embodiment
Generally speaking, central scope of the present invention is that difference is with prior art, station information builds storehouse and search processes the defect be all arranged at existing for remote server, propose station information to be built storehouse and search for processing links to be arranged at local device broadcasting station search device, achieve the object in fast search radio station, be applicable to RDS radio station or other traditional station, be particularly useful for vehicle-mounted information and entertainment system.
Below in conjunction with broadcasting station search application of installation, in the embodiment of vehicle-mounted information and entertainment system and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, vehicle-mounted information and entertainment system, comprising:
Memory cell, at local device store electricity station information database;
Touch screen, as the man-machine interaction unit of broadcasting station search device, for providing man-machine interaction between control unit and user, inputs containing search condition;
Microcontroller, as the control unit of broadcasting station search device, call memory cell according to search condition and search out associated station information aggregate, and Search Results is presented in human-computer interaction interface, coordinate work and data, the instruction interaction of each functional unit in vehicle-mounted information and entertainment system;
Navigation positioning module, as the positioning unit in broadcasting station search device, for Real-time Obtaining equipment current location information, 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 obtains 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 is 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, exports for audio frequency.
Further, described control unit is provided with searching component, and this assembly is provided with:
First search module, the search condition according to human-computer interaction interface input searches out associated station information aggregate;
Second search module, filters out the station information subset that radio station scope minimum enclosed rectangle covers described local device equipment current location from described associated station information aggregate;
3rd search module, filters out the station information that radio signals coverage covers described local device current location from described station information subset.
In the present embodiment, described station information database adopts information column form to build storehouse, and scope can be the whole nation, the whole province or carries out building storehouse according to actual needs, and station information row use Sqlite embedded database to realize, and each station information row comprise following field:
Radio station index value (RadioIndex): this field is used for as radio station unique index value; Data type: integer; s
Frequency of radio station point (RadioFreq): this field is for recording frequency of radio station; Data type: floating type, such as: 97.1;
Radio station scope minimum enclosed rectangle (RadioRect): this field is for recording radio station scope minimum enclosed rectangle longitude and latitude minimum value and maximum; Data type: character string, such as: 116.2,38.4,118.3,40.12;
Radio signals overlay area Polygon (RadionPolygon): this field is for recording the polygonal boundary point of radio station scope; Data type: character string, such as: 116.2,38.4,116.2,40.12,118.3,40.12;
Station genre (RadioType): this field for recording station genre, such as: music, traffic, physical culture etc.; Data type: integer, such as: 1: music; 2: traffic; 3: physical culture.
Certainly, can also comprise in station information row:
Station location point (RadioPosition): this field is for recording station location latitude and longitude value; Data type: character string, such as: 117.5,38.9;
Radio station detailed program inventory; Etc., practicality of the present invention can be increased further.
Below in detail the concrete grammar of broadcasting station search of the present invention is described in detail, but is followingly only the comparatively concrete preferred version of radio station searching method, in concrete enforcement, can according to circumstances be optimized some operation or condition.
As described in Figure 2, the general idea of radio station searching method of the present invention sets up one for loading the memory cell of station information database at broadcasting station search device local device in advance, then adopts following methods to carry out broadcasting station search:
S101. user sets a broadcasting station search condition by touch screen, and this broadcasting station search condition can be designated area or specified radio type, and the present embodiment is preferably specified radio type;
S102. the first search module in microcontroller receives the search condition of this specified radio type, station information database is called from memory cell, search corresponding index, the all relevant station information set Record1 in (the present embodiment is preset as the whole country) this kind radio station in certain limit in inquiry, query statement is as follows: " SELECT*FROM Rad ioPost ion WHERE Rad ioType=1 ";
S103. the second search module in microcontroller uses radio station scope minimum enclosed rectangle condition to filter: from station information set Record1, filter out the station information subset Record2 of mobile unit current location in scope minimum enclosed rectangle inside, radio station, such as: certain radio station scope minimum enclosed rectangle is: 116.2,38.4,118.3,40.12; If current location is 116.3,39.6, then current location is inner at minimum enclosed rectangle, is considered as radio station scope minimum enclosed rectangle and covers mobile unit current location;
S104. the 3rd search module in microcontroller uses radio signals overlay area Po lygon condition to filter: from station information subset Record2, filter out mobile unit current location drop on record Record3 within the scope of this radio station, be then presented in touch screen as Search Results by this record Record3.
Finally, touch screen is carried out concrete radio station and listens to selection, realized follow-up listening to operation by tuner and audio process, loud speaker.
In said method step S102, S103 and S104, if arbitrary search is without eligible record, then show issueless information directly to touch screen, so far search operation terminates.
Vehicle-mounted information and entertainment system of the present invention, because the control unit in broadcasting station search device, memory cell are all carried in on-vehicle host, human-computer interaction interface directly adopt vehicle-mounted on touch screen.Due to, make use of data-handling capacity and the data storage capacities of on-vehicle host itself on the one hand, optimize system resource; On the other hand, man-machine interaction unit directly adopts touch screen, provide the user search condition display and the Search Results display interface of enough widescreens.Navigation positioning module in positioning unit directly employing system, embodies resource further and makes full use of rate.
When the present invention is applied in vehicle-mounted information and entertainment system, except highlighting the advantage of above-mentioned resource optimization, also avoid in prior art, because vehicle is in traveling for a long time, due to the problem of large the caused telecommunication validity and reliability difference of signal intensity.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. radio station searching method, is characterized in that, set up one for loading the memory cell of station information database at local device, searching method is as follows:
S101. a broadcasting station search condition is set by the human-computer interaction interface of a local device;
S102. by being arranged at the control unit of local device, from memory cell, calling station information database according to described search condition, to search out the associated station information aggregate meeting search condition, and Search Results being carried out human-computer interaction interface display;
Described in step S101, broadcasting station search condition is specially specified radio type, and described station information database contains frequency of radio station point and station genre;
Control unit described in step S102 calls station information database according to described search condition from memory cell, after searching out the associated station information aggregate meeting search condition, control unit also passes through obtained local device current location as condition, filter out radio station scope minimum enclosed rectangle and radio signals coverage in associated station information aggregate and cover the radio station of described local device current location, then again Search Results is fed back to human-computer interaction interface;
Described control unit passes through obtained local device current location as condition, filters out radio station scope minimum enclosed rectangle and radio signals coverage in associated station information aggregate and covers the radio station of described local device current location, be specially:
S103-1. from described associated station information aggregate, filter out the station information subset that radio station scope minimum enclosed rectangle covers described local device current location, described radio station scope minimum enclosed rectangle for radio signals coverage area boundaries point be the rectangle that tolerance forms with latitude and longitude value;
S103-2. from described station information subset, filter out the station information that radio signals coverage covers described local device current location, feed back to human-computer interaction interface as Search Results.
2. a broadcasting station search device, is characterized in that, comprising:
Memory cell, at local device store electricity station information database;
Human-computer interaction interface, for providing man-machine interaction between control unit and user, inputs containing search condition;
Control unit, calls memory cell according to search condition and searches out associated station information aggregate, and Search Results is presented in human-computer interaction interface;
Also be provided with one for the positioning unit of Real-time Obtaining equipment current location information, after control unit receives search condition, described station information database contains frequency of radio station point, radio station scope minimum enclosed rectangle and radio signals coverage,
Described control unit is provided with:
First search module, the search condition according to human-computer interaction interface input searches out associated station information aggregate;
Second search module, filters out the station information subset that radio station scope minimum enclosed rectangle covers described local device current location from described associated station information aggregate;
3rd search module, filters out the station information that radio signals coverage covers described local device current location from described station information subset.
3. broadcasting station search device according to claim 2, it is characterized in that: described control unit is provided with wireless update module, it is connected with remote server radio communication, remote server storage has the station information data bank of real-time update, wireless update module obtains up-to-date station information data from remote server, and is updated to memory cell.
4. vehicle-mounted information and entertainment system, is characterized in that: described system comprises broadcasting station search device described in claim 2, and wherein, described control unit, memory cell are all carried in on-vehicle host, described human-computer interaction interface directly adopt vehicle-mounted on touch screen.
5. vehicle-mounted information and entertainment system, it is characterized in that: described system comprises broadcasting station search device described in claim 2, wherein, described control unit, memory cell are all carried in on-vehicle host, described human-computer interaction interface directly adopt vehicle-mounted on touch screen, the navigation positioning module in locating module directly employing system.
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| US20180314979A1 (en) * | 2017-04-28 | 2018-11-01 | GM Global Technology Operations LLC | Systems and methods for processing radio data system feeds |
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| EP1819154A2 (en) * | 2006-02-14 | 2007-08-15 | Canon Kabushiki Kaisha | Display signal control apparatus, and display signal control method |
| CN101969598A (en) * | 2010-10-14 | 2011-02-09 | 中兴通讯股份有限公司 | Mobile terminal and method thereof for automatically adjusting channel of radio |
| CN102324993A (en) * | 2011-06-02 | 2012-01-18 | 四川长虹佳华信息产品有限责任公司 | Transregional automatic radio station switching method for vehicle-mounted radio |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1819154A2 (en) * | 2006-02-14 | 2007-08-15 | Canon Kabushiki Kaisha | Display signal control apparatus, and display signal control method |
| CN101969598A (en) * | 2010-10-14 | 2011-02-09 | 中兴通讯股份有限公司 | Mobile terminal and method thereof for automatically adjusting channel of radio |
| CN102324993A (en) * | 2011-06-02 | 2012-01-18 | 四川长虹佳华信息产品有限责任公司 | Transregional automatic radio station switching method for vehicle-mounted radio |
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