CN107483285A - RDS method of reseptance and device - Google Patents
RDS method of reseptance and device Download PDFInfo
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- CN107483285A CN107483285A CN201710683783.1A CN201710683783A CN107483285A CN 107483285 A CN107483285 A CN 107483285A CN 201710683783 A CN201710683783 A CN 201710683783A CN 107483285 A CN107483285 A CN 107483285A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
- H04L43/103—Active monitoring, e.g. heartbeat, ping or trace-route with adaptive polling, i.e. dynamically adapting the polling rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/29—Arrangements for monitoring broadcast services or broadcast-related services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
- H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]
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Abstract
The invention provides the method for reseptance of RDS a kind of and device, it is related to the technical field of emergent broadcast, this method includes：Message queue is obtained, message queue includes the message that at least one frequency is sent；Judge the heartbeat instruction of target dominant frequency whether is received in preset time period based on message, target dominant frequency is any one frequency at least one frequency；In the case where judging not receive the heartbeat instruction of target dominant frequency, by target dominant frequency added to frequency list is cut, cut and afterbody dominant frequency is comprised at least in frequency list, afterbody dominant frequency is the afterbody nexus in wired frequency modulation networking；Poll cuts frequency list, and to lock next to be switched dominant frequency, and the dominant frequency by currently having switched receives RDS instructions；Whether detection target dominant frequency recovers normal, and when target dominant frequency recovers normal, target dominant frequency is removed from cutting in frequency list, alleviates the technical problem of terminal response not in time caused by RDS existing for existing cascaded transmission mode instructs laser propagation effect poor.
Description
Technical field
The present invention relates to emergent broadcast technical field, more particularly, to a kind of RDS method of reseptance and device.
Background technology
The transmission of the RDS instructions of multistage emergent broadcast, it is divided into parallel and cascade two ways.Transmission in parallel is RDS at different levels
Instruction is all separate, and being interrupted in the absence of one stage signal causes other signals RDS instructions down to transmit, the transmission side
Formula have individual shortcoming be exactly terminal can only frequency hopping, receive the RDS instructions of multilevel signal at times, so as to cause terminal to occur to cut frequency
Sound, broadcast effect is poor, and it is less efficient to respond RDS instructions；Cascaded transmission is then to carry out difference by transmission of the subordinate to higher level to turn simultaneously
Merge, the RDS instructions of the frequency modulation frequency of most subordinate are only received by terminal, so as to no longer cut frequency, and response RDS instructions are very fast, but
It is that this kind of cascaded transmission mode easily causes one stage signal to interrupt so as to have influence on the transmission of other signals RDS instructions.
The content of the invention
In view of this, it is an object of the invention to provide the method for reseptance of RDS a kind of and device, to alleviate existing level
Join the poor caused technical problem of terminal response not in time of RDS instructions laser propagation effect existing for transmission means.
In a first aspect, the embodiments of the invention provide a kind of RDS method of reseptance, including：Message queue is obtained, it is described to disappear
Breath queue includes the message that at least one frequency is sent；Judge whether receive mesh in preset time period based on the message
The heartbeat instruction of dominant frequency is marked, the target dominant frequency is any one frequency at least one frequency；Judging not connect
In the case of the heartbeat instruction for receiving the target dominant frequency, the target dominant frequency is added to and cuts frequency list, it is described to cut frequency list
In comprise at least afterbody dominant frequency, the afterbody dominant frequency is the afterbody nexus in wired frequency modulation networking；Poll
Described to cut frequency list, to lock next to be switched dominant frequency, and the dominant frequency by currently having switched receives RDS instructions；Detection
Whether the target dominant frequency recovers normal, wherein, when the target dominant frequency recovers normal, the target dominant frequency is cut from described
Removed in frequency list.
Further, detect whether the target dominant frequency is recovered normally to include：The mesh is obtained in the message queue
Mark the RDS frames that dominant frequency is sent；Judge whether to receive complete RDS instructions based on the RDS frames；If receive described complete
RDS instructions, then cut the source of inquiry in frequency list with the presence or absence of the complete RDS instructions described, and judge described complete
Whether whole RDS instructions are received by the first frequency, wherein, the priority of first frequency is preferential less than the target dominant frequency
Level；If it is judged that be then to detect that the target dominant frequency recovers normal, wherein, will when the target dominant frequency recovers normal
The target dominant frequency is removed from described cut in frequency list.
Further, by the target dominant frequency from it is described cut remove in frequency list after, methods described also includes：Obtain
The RDS instructions that at least one frequency is sent；Judge whether the RDS instructions that at least one frequency is sent are that target refers to
Order, wherein, the target instruction target word includes starting broadcasting maintenance instruction or breaks instruction；If it is judged that it is, then in the frequency row that start broadcasting
The start-stop of the frequency of the renewal transmission RDS instructions broadcasts state in table；Based on frequency list selection of starting broadcasting described in after renewal
The frequency of highest priority starts broadcasting；Wherein, frequency list is cut after the frequency of the highest priority is selected, described in poll,
To determine next to be switched dominant frequency.
Further, if it is judged that no, methods described also includes：When receiving dominant frequency setting instruction, removing is started broadcasting
The First Input First Output of each frequency in frequency list, and frequency list of being started broadcasting described in removing, and set according to the dominant frequency
Instruct frequency list of being started broadcasting described in renewal again；Control terminal relocks the dominant frequency of lowermost level in frequency list in described cut, and
RDS instructions are received by the dominant frequency of the lowermost level, wherein, after RDS instructions are received by the dominant frequency of the lowermost level, wheel
Frequency list is cut described in inquiry, to determine next to be switched dominant frequency.
Further, if not receiving the complete RDS instructions, methods described also includes：Judge whether to detect
RDS frames；If it is judged that being whether the received quantity for then judging the RDS frames exceedes predetermined number, and judge the RDS frames
A complete RDS instruction can be formed；If it is judged that it is no, then judge whether signal strength is in abnormality；If sentence
Breaking is, then removes frequency list of starting broadcasting, and each First Input First Output of frequency in frequency list of being started broadcasting described in removing, and
Frequency list is cut described in poll, to determine next to be switched dominant frequency.
Further, after message queue is obtained, methods described also includes：Determine that transmission is started broadcasting dimension based on the message
The frequency of instruction is held, and after the maintenance instruction of starting broadcasting is received, starts the countdown held time；Determine the maintenance
Whether the countdown of time terminates；If it is determined that terminating, then being started broadcasting described in control transmission maintains the frequency of instruction to break；Renewal
Started broadcasting described in sending in the frequency list start-stop of the frequency for maintaining instruction of starting broadcasting broadcasts state；The frequency that starts broadcasting after the updating
The frequency of highest priority is selected to start broadcasting in list, wherein, after the frequency of selection highest priority starts broadcasting, cut described in poll
Frequency list, to determine next to be switched dominant frequency.
Second aspect, the embodiment of the present invention also provide a kind of RDS reception device, including：First acquisition unit, for obtaining
Message queue is taken, the message queue includes the message that at least one frequency is sent；First judging unit, for based on described
Message judges the heartbeat instruction of target dominant frequency whether is received in preset time period, and the target dominant frequency is described at least one
Any one frequency in frequency；Adding device, for the feelings in the heartbeat instruction for judging not receive the target dominant frequency
Under condition, the target dominant frequency is added to and cuts frequency list；Poll units, it is next to lock for cutting frequency list described in poll
To be switched dominant frequency, and the dominant frequency by currently having switched receives RDS instructions；Detection unit, for detecting the target dominant frequency
Whether recover normal, wherein, when the target dominant frequency recovers normal, the target dominant frequency is cut in frequency list clearly from described
Remove.
Further, detection unit is used for：The RDS frames that the target dominant frequency is sent are obtained in real time；Sentenced based on the RDS frames
It is disconnected whether to receive complete RDS instructions；If receiving the complete RDS instructions, inquired about in described cut in frequency list
With the presence or absence of the source of the complete RDS instructions, and judge whether the complete RDS instructions are received by the first frequency, its
In, the priority of first frequency is less than the priority of the target dominant frequency；If it is judged that it is then to detect the target
Dominant frequency recovers normal, wherein, when the target dominant frequency recovers normal, the target dominant frequency is cut in frequency list clearly from described
Remove.
Further, described device also includes：Second acquisition unit, for the target dominant frequency to be arranged from the frequency of cutting
After being removed in table, the RDS instructions that at least one frequency is sent are obtained；Second judging unit, for judge it is described at least
Whether the RDS instructions that one frequency is sent are target instruction target word, wherein, the target instruction target word, which includes starting broadcasting, to be maintained instruction or breaks
Instruction；Updating block, for if it is judged that being, then renewal to send the frequency of the RDS instructions in frequency list of starting broadcasting
Start-stop broadcasts state；Selecting unit, opened for the frequency based on the frequency list selection highest priority that starts broadcasting described in after renewal
Broadcast；Wherein, frequency list is cut after the frequency of the highest priority is selected, described in poll, it is next to be switched to determine
Dominant frequency.
Further, described device also includes：Clearing cell, for judge it is no in the case of, when receiving dominant frequency
When instruction is set, frequency list of starting broadcasting is removed, and each First Input First Output of frequency in frequency list of being started broadcasting described in removing,
And frequency list of being started broadcasting according to the dominant frequency sets instruction renewal again；Control unit, for controlling terminal to be cut described
The dominant frequency of lowermost level is relocked in frequency list, and RDS instructions are received by the dominant frequency of the lowermost level, wherein, passing through
After the dominant frequency reception RDS instructions for stating lowermost level, frequency list is cut described in poll, to determine next to be switched dominant frequency.
In embodiments of the present invention, message queue is obtained first, then, when judging default based on the message in message queue
Between the heartbeat instruction of target dominant frequency whether is received in section, in the situation for the heartbeat instruction for judging not receive target dominant frequency
Under, target dominant frequency is added to and cuts frequency list；Poll cuts frequency list, to lock next to be switched dominant frequency, and by current
The dominant frequency switched receives RDS instructions；Finally, whether detection target dominant frequency recovers normal, wherein, when target dominant frequency recovers normal
When, target dominant frequency is removed from cutting in frequency list.In embodiments of the present invention, by the way of poll cuts frequency list, terminal is made
Other regular leading end signals and according to priority played in order can be still received in the case of the front end signal exception of part
Emergent broadcast signal, ensureing that and can takes into account the processing of abnormal conditions while efficiently broadcast, making the acoustic system operation of whole village of village
More stable, broadcast effect is more preferable, and terminal maintenance is more convenient and then alleviates RDS instructions existing for existing cascaded transmission mode
The poor technical problem of laser propagation effect.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and obtained in accompanying drawing.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic diagram of wired frequency modulation networking according to embodiments of the present invention；
Fig. 2 is a kind of schematic diagram of city's broadcast room according to embodiments of the present invention；
Fig. 3 is the data structure schematic diagram for the PI codes for being a kind of RDS data frames according to embodiments of the present invention；
Fig. 4 is a kind of flow chart of RDS according to embodiments of the present invention method of reseptance；
Fig. 5 is a kind of schematic diagram of RDS according to embodiments of the present invention method of reseptance；
Fig. 6 is a kind of schematic diagram of RDS according to embodiments of the present invention reception device.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is part of the embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Embodiment one：
According to embodiments of the present invention, there is provided a kind of embodiment of RDS method of reseptance is, it is necessary to illustrate, in accompanying drawing
Flow the step of illustrating can be performed in the computer system of such as one group computer executable instructions, although also,
Show logical order in flow charts, but in some cases, can with different from order herein perform it is shown or
The step of description.
It should be noted that RDS provided in an embodiment of the present invention method of reseptance for it is a kind of based on wired frequency modulation networking and
The method of setting.The structure of wired frequency modulation networking is simply introduced below in conjunction with Fig. 2.
Fig. 1 is a kind of schematic diagram of wired frequency modulation networking according to embodiments of the present invention.Tu Wei cities-town level the networking is shown
It is intended to.
The frequency interleaved modulation modulator of machine is integrated from figure 1 it appears that the all-in-one shown in Fig. 1 is FM encoding, coding
The RDS instructions of control are transmitted by frequency modulated subcarrier (57KHz).Daily all-in-one would generally play some daily broadcast, including
Local homemade audio programs, and the mode that emergent all-in-one intercuts typically by phone or short message, emergent broadcast
Content merges daily broadcasted content and transmitted down together.
Shown in city's broadcast room as shown in Figure 2, the emergent all-in-one of the daily all-in-one in city and city is connected to by parallel wires
On same interchanger.The daily RDS instructions in city are gone down by frequency modulated subcarrier transmission, and the RDS instruction one side that city is emergent
Gone down by frequency modulated subcarrier transmission, the daily all-in-one in city is on the other hand transferred to by Transmission Control Protocol, connect by the daily all-in-one in city
After receipts and local RDS command serials send, and are passed so as to realize that all RDS instructions of city-level concentrate on the daily all-in-one in city
It is defeated.Likewise, as shown in figure 1, level all RDS instructions in town all concentrate on the transmission of whole day normal all-in-one.
As shown in figure 1, subordinate (town level) difference turns the instruction of higher level's (city-level), it is to receive to switch to by the network computer room light of this grade
After electric signal, daily all-in-one of higher level's signal to this grade all the way is fed back, demodulates higher level's by the FM reception of the all-in-one
After RDS instructions, the RDS instructions of the machine are remerged, and the RDS instructions of emergent all-in-one at the same level, together serial transmission are gone down.
Turn from the instruction difference of multilevel network in mode, it is known that the daily all-in-one per one-level can all carry higher level
With all instructions of this grade, instruction priority in being instructed according to RDS is the instructions of these different stages according to different priorities
Order is sent.
By taking the intelligent broadcast network management system technical specification that current XX is saved as an example, the PI codes of traditional RDS data frames are entered
Go and redefined, as shown in Figure 3.Wherein, datacast source rank and datagram ID definition are as shown in table 1.
Table 1
It will be detailed below the record principle of Frequency Modulated Terminal.
Fig. 4 is a kind of flow chart of RDS according to embodiments of the present invention method of reseptance, and this method is set applied to terminal
It is standby, as shown in figure 4, this method comprises the following steps：
Step S402, obtains message queue, and message queue includes the message that at least one frequency is sent；
By foregoing description, at the same to RDS instruction make with differential turn and it is upper it is differential turn when, all RDS instruction meeting
Concentrate on the dominant frequency transmission of afterbody.Therefore, in embodiments of the present invention, setting is passed through so that terminal device only receives this
The message of afterbody dominant frequency transmission, include RDS instructions, the heartbeat instruction of each frequency in the message queue, maintenance of starting broadcasting refers to
The relevant informations such as order.
Step S404, judge the heartbeat instruction of target dominant frequency, target whether are received in preset time period based on message
Dominant frequency is any one frequency at least one frequency；
In normal use, each dominant frequency can send heartbeat instruction to terminal device, to ensure between terminal device
Communication it is normal.In embodiments of the present invention, terminal device judges whether receive target dominant frequency in preset time based on message
Heartbeat instruction.If terminal device does not receive the heartbeat instruction of target dominant frequency in preset time period, show the target
Dominant frequency communication abnormality, now, target dominant frequency is added to and cut in frequency list, and the frequency state of cutting of more fresh target dominant frequency is "Yes".
Step S406, in the case where judging not receive the heartbeat instruction of target dominant frequency, target dominant frequency is added to
Frequency list is cut, cuts and afterbody dominant frequency is comprised at least in frequency list, afterbody dominant frequency is last in wired frequency modulation networking
Level nexus；
It should be noted that because the secondary chip of terminal device only needs to lock the dominant frequency of afterbody, rather than instruction
Parallel transmission operates frequently, it is necessary to cut like that, therefore, afterbody dominant frequency is comprised at least in frequency list is cut.
Step S408, poll cut frequency list, to lock next to be switched dominant frequency, and the dominant frequency by currently having switched
Receive RDS instructions；
In embodiments of the present invention, only when terminal device does not receive the heartbeat of a certain level dominant frequency within the defined time
During instruction, then it is assumed that this grade of dominant frequency is abnormal (for example, power-off or equipment operation exception), is cut at this time, it may be necessary to which the dominant frequency is added to
In frequency list, then, dominant frequency all in frequency list is cut in poll locking, and the dominant frequency by currently having switched receives RDS instructions.
So as to completely receive the RDS instructions that other dominant frequency in addition to abnormal dominant frequency are sent, avoid because the dominant frequency of certain one-level is abnormal
The RDS of other more than this grade dominant frequency is caused to instruct the phenomenon that can not be received by terminal device to occur afterwards.
Whether step S410, detection target dominant frequency recover normal, wherein, when target dominant frequency recovers normal, by target master
Frequency is removed from cutting in frequency list.
In embodiments of the present invention, message queue is obtained first, then, when judging default based on the message in message queue
Between the heartbeat instruction of target dominant frequency whether is received in section, in the situation for the heartbeat instruction for judging not receive target dominant frequency
Under, target dominant frequency is added to and cuts frequency list；Poll cuts frequency list, to lock next to be switched dominant frequency, and by current
The dominant frequency switched receives RDS instructions；Finally, whether detection target dominant frequency recovers normal, wherein, when target dominant frequency recovers normal
When, target dominant frequency is removed from cutting in frequency list.In embodiments of the present invention, by the way of poll cuts frequency list, terminal is made
Other regular leading end signals and according to priority played in order can be still received in the case of the front end signal exception of part
Emergent broadcast signal, ensureing that and can takes into account the processing of abnormal conditions while efficiently broadcast, making the acoustic system operation of whole village of village
More stable, broadcast effect is more preferable, and terminal maintenance is more convenient and then alleviates RDS instructions existing for existing cascaded transmission mode
The technical problem of terminal response not in time caused by laser propagation effect is poor.
In an optional embodiment, above-mentioned steps S410, i.e. whether detection target dominant frequency is recovered normally including as follows
Step：
Step S4101, the RDS frames that target dominant frequency is sent are obtained in message queue；
Step S4102, judge whether to receive complete RDS instructions based on RDS frames；
Step S4103, if receiving complete RDS instructions, inquired about in frequency list is cut and whether there is complete RDS
The source of instruction, and judge whether complete RDS instructions are received by the first frequency, wherein, the priority of the first frequency is less than mesh
Mark the priority of dominant frequency；
Step S4104, if it is judged that be then to detect that target dominant frequency recovers normal, wherein, when target dominant frequency is recovered just
Chang Shi, target dominant frequency is removed from cutting in frequency list.
In embodiments of the present invention, terminal device also obtains every in addition to analyzing the heartbeat instruction that each frequency is sent
The RDS instructions that individual frequency is sent, for example, the RDS instructions that target dominant frequency is sent are obtained, with the RDS sent according to the target dominant frequency
Instruction determines whether target dominant frequency recovers normal.Wherein, the RDS instructions of the target dominant frequency are sent by the current dominant frequency switched
To terminal device, and RDS instructions are the command informations included in message queue.
Because RDS instructions are sent in the form of RDS frames, therefore, terminal device judges after RDS frames are received
Whether the RDS frames received can make up a complete RDS instruction, wherein, if it is judged that the RDS frames received being capable of group
Into a complete RDS instruction, then the source that inquiry instructs with the presence or absence of complete RDS in frequency list is cut.For example, cutting frequency
Inquiry whether there is target dominant frequency in list.If it is present, judge that whether the RDS of target dominant frequency is instructed by target dominant frequency
Next stage frequency receives, if it is judged that RDS instructions are received by the next stage frequency of target dominant frequency, then determine mesh
Mark dominant frequency and recover normal, now, target dominant frequency is removed from cutting in frequency list.
That is, when the RDS of abnormal dominant frequency (that is, above-mentioned target dominant frequency) is instructed by the dominant frequency lower than its priority
When receiving, illustrate that the dominant frequency has recovered normal, and then the dominant frequency can be rejected in frequency list from cutting differential turn under,
Do not relock the dominant frequency and receive RDS.
In embodiments of the present invention, after target dominant frequency is removed from frequency list is cut, it can also carry out following step：
Step S11, obtain the RDS instructions that at least one frequency is sent；
Step S12, judge whether the RDS instructions that at least one frequency is sent are target instruction target word, wherein, target instruction target word includes
Maintenance of starting broadcasting instructs or broken instruction；
Step S13, if it is judged that being, then the start-stop of the frequency of renewal transmission RDS instructions is broadcast in frequency list of starting broadcasting
State；
Step S14, the frequency based on the frequency list selection highest priority that starts broadcasting after renewal start broadcasting；Wherein, selecting
After the frequency for selecting out highest priority, poll cuts frequency list, to determine next to be switched dominant frequency.
In embodiments of the present invention, terminal device is in the case of analyzing target dominant frequency and not recovering normal, or, terminal
Equipment will also perform above-mentioned steps S11 to step S14 after target dominant frequency is removed from frequency list is cut.
Specifically, terminal device will obtain the RDS instructions that at least one frequency is sent, now, terminal device will determine that to
Whether the RDS instructions that a frequency is sent less are target instruction target word (i.e., if maintenance instructs or broken instruction to start broadcasting).If
Terminal device judges that the RDS instructions that any one frequency is sent at least one frequency are target instruction target word (maintenance instruction of starting broadcasting
Or break instruction), then the start-stop of the frequency of renewal transmission RDS instructions broadcasts state in frequency list of starting broadcasting.To starting broadcasting
After frequency list is updated, if multiple frequencies have signal and with maintenance instructions of starting broadcasting in this starts broadcasting frequency list
When, it is switched to the higher frequency broadcast program of priority and plays.And after the frequency range for selecting highest priority plays, wheel
Frequency list is cut in inquiry, to determine next to be switched dominant frequency (that is, dominant frequency to be locked).
As shown in table 2 below includes starting broadcasting for a kind of integration form for starting broadcasting frequency list and cutting frequency list, the form
Information in frequency list and cut the information in frequency list.Split state of breaking described in the above is updated, i.e.,
To be updated to the content belonging to " start-stop is broadcast " in table 2, for example, being updated to " starting broadcasting ", or " breaking " is updated to.Such as table 2
It is shown, if terminal device receive " provincial " frequency break instruction, now, by " start-stop is broadcast " location updating in table 2 " to stop
Broadcast ", now, it can be seen from Table 2 that, " at county level " frequency and " town level " frequency send maintenance instruction of starting broadcasting to terminal device, this
When, select the frequency of highest priority to play, that is, select " at county level " frequency to play.
Table 2
In embodiments of the present invention, after above-mentioned steps S12, if it is judged that no, this method also comprises the following steps：
Step S15, when receiving dominant frequency setting instruction, frequency list of starting broadcasting is removed, and remove frequency list of starting broadcasting
In each frequency First Input First Output, and frequency list of being started broadcasting according to the dominant frequency sets instruction renewal again；
Step S14, control terminal relocks the dominant frequency of lowermost level in frequency list is cut, and is connect by the dominant frequency of lowermost level
RDS instructions are received, wherein, after RDS instructions are received by the dominant frequency of lowermost level, poll cuts frequency list, to determine next treat
The dominant frequency of switching.
In embodiments of the present invention, if it is judged that when the RDS instructions that at least one frequency is sent are not target instruction target words, sentence
Whether the disconnected RDS is that dominant frequency sets instruction, if dominant frequency sets instruction, at this time, it may be necessary to remove frequency list of starting broadcasting, Yi Jiqing
Except the First Input First Output of each frequency in frequency list of starting broadcasting.Removing the FIFO of start broadcasting frequency list and each frequency
After queue, it is possible to which the dominant frequency for retaining lowermost level in frequency list is cut in control, and is referred to by the dominant frequency reception RDS of the lowermost level
Order, for example, receiving RDS instructions by the frequency of " at village level ".
By foregoing description, in embodiments of the present invention, when receiving an instruction for setting dominant frequency, it is necessary to remove
Start broadcasting frequency list, the RDS of all frequencies receives FIFO, and cuts other masters in frequency list in addition to the dominant frequency of lowermost level
Frequently, the dominant frequency of lowermost level is relocked to receive RDS.
In above-mentioned steps S4102, if not receiving complete RDS instructions, this method also comprises the following steps：
Step S21, judge whether to detect RDS frames；
Step S22, if it is judged that being whether the received quantity for then judging RDS frames exceedes predetermined number, and judge RDS
Can frame form a complete RDS instruction；
Step S23, if it is judged that it is no, then judge whether signal strength is in abnormality；
Step S24, if it is judged that being then to remove frequency list of starting broadcasting, and remove each frequency in frequency list of starting broadcasting
The First Input First Output of point, and poll cuts frequency list, to determine next to be switched dominant frequency.
In embodiments of the present invention, it is first determined whether detecting RDS frames, wherein, if being not detected by RDS frames, take turns
Frequency list is cut in inquiry, to determine next to be switched dominant frequency；If detecting RDS frames, judge RDS frames received quantity whether
More than predetermined number, and judge that can RDS frames form a complete RDS instruction.Wherein, if it is judged that being, then remove and open
Frequency list is broadcast, and removes the First Input First Output of each frequency in frequency list of starting broadcasting, and poll cuts frequency list, to determine
Next to be switched dominant frequency；If it is judged that it is no, then continue to judge whether signal strength is in abnormality.Wherein, if
Judge it is then to remove frequency list of starting broadcasting, and remove the First Input First Output of each frequency in frequency list of starting broadcasting, and take turns
Frequency list is cut in inquiry, to determine next to be switched dominant frequency；If it is judged that no, then direct poll cuts frequency list, with determination
One to be switched dominant frequency.
In embodiments of the present invention, in above-mentioned steps S402, i.e. after message queue is obtained, this method is also included such as
Lower step：
Step S412, determine to send the frequency for starting broadcasting and maintaining to instruct based on message, and instruction is maintained receiving to start broadcasting
Afterwards, the countdown held time is started；
Step S414, it is determined that whether the countdown held time terminates；
Step S416, if it is determined that go out to terminate, then control, which sends to start broadcasting, maintains the frequency of instruction to break；
Step S418, the start-stop for updating the frequency that maintenance instruction of starting broadcasting is sent in frequency list of starting broadcasting broadcast state；
Step S420, the frequency of highest priority is selected to start broadcasting in frequency list of starting broadcasting after the updating, wherein, selecting
Select after priority highest frequency starts broadcasting, poll cuts frequency list, to determine next to be switched dominant frequency.
In embodiments of the present invention, the heartbeat instruction that terminal device is sent except at least one frequency of real-time reception, it is also real
When receive that at least one frequency sends start broadcasting and maintenance instruction or break instruction.When terminal device receives maintenance instruction of starting broadcasting
When, timer carrys out the countdown that thing starts to hold time, and at the end of countdown, control sends the frequency for maintaining to instruct that starts broadcasting
In breaking state, and the start-stop for updating in frequency list of starting broadcasting the frequency broadcasts state to break.If after the renewal
Frequency list of starting broadcasting in multiple frequencies have signal and with start broadcasting maintenance instruction when, be switched to priority it is higher frequency broadcast
Program simultaneously plays.And after the frequency range for selecting highest priority plays, poll cuts frequency list, next to be switched to determine
Dominant frequency (that is, dominant frequency to be locked).
By foregoing description, in embodiments of the present invention, maintenance instruction is started broadcasting then when the frequency to start broadcasting,
Then break the frequency, and update frequency list of starting broadcasting again, and search the frequency for the highest priority for needing to start broadcasting, by main core
Piece locks the frequency and started broadcasting.
To sum up, the method provided in embodiments of the present invention is the method established based on cascaded transmission networking, this method
A kind of reliable mode for receiving RDS instructions is provided, which copes with various emergency cases, it is ensured that terminal device can
Timely respond to the broadcast of broadcast singals at different levels.The method is characterized in that terminal only receives the RDS instructions of a dominant frequency, according to first
The RDS instructions of beginningization, foundation are started broadcasting and cut frequency list, and the real-time update of holding time in being instructed according to RDS starts broadcasting and cuts frequency list,
Determine that subsequent time needs the frequency played.When current reception dominant frequency signal occurs abnormal, terminal continues to lock the master of upper level
Frequency receives RDS instructions, and periodicity poll exception dominant frequency signal, relocks the dominant frequency after recovering so as to abnormal dominant frequency, ensures
Terminal adaptability.
The to sum up method of reseptance for the RDS that each embodiment provides, for intuitivism apprehension said process, with the RDS's shown in Fig. 5
Illustrated exemplified by the schematic diagram of method of reseptance, this method mainly includes：
1, the message in message queue is read, message queue includes the message that at least one frequency is sent；
2, dominant frequency heartbeat instruction time-out is detected, wherein, in embodiments of the present invention, it can be judged based on message default
Whether the heartbeat instruction of target dominant frequency is received in period, and target dominant frequency is any one frequency at least one frequency；
3, target dominant frequency is added to and cuts frequency list, wherein, judging what the heartbeat for not receiving target dominant frequency instructed
In the case of, by target dominant frequency added to frequency list is cut, cut and afterbody dominant frequency is comprised at least in frequency list, afterbody dominant frequency is
Afterbody nexus in wired frequency modulation networking；
4, poll cuts frequency list, and to lock next to be switched dominant frequency, and the dominant frequency by currently having switched receives RDS
Instruction；
5, detect that the frequency that starts broadcasting maintains timer expiry, determine to send the frequency for starting broadcasting and maintaining to instruct based on message, and
After maintenance instruction of starting broadcasting is received, start the countdown held time；
6, it is determined that whether the countdown held time terminates；
7, this frequency breaks processing, wherein, if it is determined that go out to terminate, then control, which sends to start broadcasting, maintains the frequency of instruction to stop
Broadcast；
8, frequency list of starting broadcasting is updated, wherein, update and opening for the frequency that maintenance of starting broadcasting instructs is sent in frequency list of starting broadcasting
Break state；
9, select the frequency of highest priority to start broadcasting, wherein, select priority in frequency list of starting broadcasting after the updating
Highest frequency starts broadcasting, wherein, after the frequency of selection highest priority starts broadcasting, poll cuts frequency list, next to determine
To be switched dominant frequency；
10, RDS frames are obtained, wherein it is possible to obtain the RDS frames that target dominant frequency is sent in message queue；
11, getting frame result, wherein it is possible to judge whether to receive complete RDS instructions based on RDS frames；
12, the corresponding frequency of heavy duty, and maintain timer；
13, determine whether target dominant frequency recovers normal, wherein, if receiving complete RDS instructions, cutting frequency list
The source that middle inquiry instructs with the presence or absence of complete RDS, and judge whether complete RDS instructions are received by the first frequency, wherein,
The priority of first frequency is less than the priority of target dominant frequency；
14, target dominant frequency is removed from cutting in frequency list, wherein, if it is judged that being then to detect that target dominant frequency is recovered
Normally, wherein, when target dominant frequency recovers normal, target dominant frequency is removed from cutting in frequency list.
15, obtain the RDS instructions that at least one frequency is sent；
16, determine the instruction type of RDS instructions；
17, judge to cut the dominant frequency for whether there are the RDS command sources in frequency list, and whether priority refers to than receiving the RDS
The dominant frequency of order is high；
18, frequency list of starting broadcasting is updated, wherein, if it is judged that being, then renewal transmission RDS refers in frequency list of starting broadcasting
The start-stop of the frequency of order broadcasts state；
19, starting broadcasting for highest priority is selected, wherein it is possible to based on the frequency list selection priority that starts broadcasting after renewal
Highest frequency range starts broadcasting；Wherein, after the frequency range of highest priority is selected, poll cuts frequency list, to determine next treat
The dominant frequency of switching.
20, judge whether RDS instructions are that dominant frequency sets instruction；
21, frequency list of starting broadcasting is removed, wherein, when receiving dominant frequency setting instruction, remove frequency list of starting broadcasting；
22, remove the First Input First Output of each frequency in frequency list of starting broadcasting；
23, the dominant frequency for retaining lowermost level in frequency list is cut in control, and receives RDS instructions by the dominant frequency of lowermost level, wherein,
After RDS instructions are received by the dominant frequency of lowermost level, poll cuts frequency list, to determine next to be switched dominant frequency.
24, judge whether to detect RDS frames；Wherein, judge that not receiving complete RDS instructs if based on RDS frames, then
Now judge whether to detect RDS frames；
Whether 25, RDS received quantities are excessive, wherein, if it is judged that being whether the received quantity for then judging RDS frames surpasses
Predetermined number is crossed, and judges that can RDS frames form a complete RDS instruction；
26, judge whether signal strength is in abnormality, wherein, if it is judged that it is no, then whether judge signal strength
In abnormality；
27, start broadcasting frequency list and First Input First Output are removed, wherein, if it is judged that being then to remove the frequency row that start broadcasting
Table, and the First Input First Output of each frequency in frequency list of starting broadcasting is removed, and poll cuts frequency list, to determine next treat
The dominant frequency of switching.Specific implementation process as above, repeats no more here.
Embodiment two：
The embodiment of the present invention additionally provides a kind of RDS reception device, and the reception device of the RDS is mainly used in performing this hair
The method of reseptance for the RDS that bright embodiment the above is provided, does to RDS provided in an embodiment of the present invention reception device below
It is specific to introduce.
Fig. 6 is a kind of schematic diagram of RDS according to embodiments of the present invention reception device, as shown in fig. 6, the RDS's connects
Receiving apparatus mainly includes：First acquisition unit 61, the first judging unit 62, adding device 63, poll units 64 and detection unit
65, wherein：
First acquisition unit 61, for obtaining message queue, message queue includes the message that at least one frequency is sent；
First judging unit 62, for judging the heartbeat of target dominant frequency whether is received in preset time period based on message
Instruction, target dominant frequency are any one frequency at least one frequency；
Adding device 63, in the case where judging not receive the heartbeat instruction of target dominant frequency, by target dominant frequency
Added to cutting frequency list；
Poll units 64, frequency list is cut for poll, to lock next to be switched dominant frequency, and by currently having switched
Dominant frequency receive RDS instruction；
Detection unit 65, for detecting whether target dominant frequency recovers normal, wherein, will when target dominant frequency recovers normal
Target dominant frequency is removed from cutting in frequency list.
In embodiments of the present invention, message queue is obtained first, then, when judging default based on the message in message queue
Between the heartbeat instruction of target dominant frequency whether is received in section, in the situation for the heartbeat instruction for judging not receive target dominant frequency
Under, target dominant frequency is added to and cuts frequency list；Poll cuts frequency list, to lock next to be switched dominant frequency, and by current
The dominant frequency switched receives RDS instructions；Finally, whether detection target dominant frequency recovers normal, wherein, when target dominant frequency recovers normal
When, target dominant frequency is removed from cutting in frequency list.In embodiments of the present invention, by the way of poll cuts frequency list, terminal is made
Other regular leading end signals and according to priority played in order can be still received in the case of the front end signal exception of part
Emergent broadcast signal, ensureing that and can takes into account the processing of abnormal conditions while efficiently broadcast, making the acoustic system operation of whole village of village
More stable, broadcast effect is more preferable, and terminal maintenance is more convenient and then alleviates RDS instructions existing for existing cascaded transmission mode
The technical problem of terminal response not in time caused by laser propagation effect is poor.
Alternatively, detection unit is used for：The RDS frames that target dominant frequency is sent are obtained in real time；Judge whether to receive based on RDS frames
Instructed to complete RDS；If receiving complete RDS instructions, inquire about in frequency list is cut and refer to the presence or absence of complete RDS
The source of order, and judge whether complete RDS instructions are received by the first frequency, wherein, the priority of the first frequency is less than target
The priority of dominant frequency；If it is judged that be then to detect that target dominant frequency recovers normal, wherein, when target dominant frequency recovers normal,
Target dominant frequency is removed from cutting in frequency list.
Alternatively, the device also includes：Second acquisition unit, for target dominant frequency to be removed into it from frequency list is cut
Afterwards, the RDS instructions that at least one frequency is sent are obtained；Second judging unit, for judging that the RDS that at least one frequency is sent refers to
Whether order is target instruction target word, wherein, target instruction target word includes starting broadcasting maintenance instruction or breaks instruction；Updating block, if for
Judge it is that then the start-stop of the frequency of renewal transmission RDS instructions broadcasts state in frequency list of starting broadcasting；Selecting unit, for base
The frequency of the frequency list selection highest priority that starts broadcasting after renewal starts broadcasting；Wherein, the frequency of highest priority is being selected
After point, poll cuts frequency list, to determine next to be switched dominant frequency.
Alternatively, the device also includes：Clearing cell, for judge it is no in the case of, when receive dominant frequency set
During instruction, frequency list of starting broadcasting is removed, and removes the First Input First Output of each frequency in frequency list of starting broadcasting, and according to institute
State dominant frequency setting and instruct frequency list of being started broadcasting described in renewal again；Control unit, for control terminal in frequency list is cut again
The dominant frequency of lowermost level is locked, and RDS instructions are received by the dominant frequency of lowermost level, wherein, RDS is being received by the dominant frequency of lowermost level
After instruction, poll cuts frequency list, to determine next to be switched dominant frequency.
Alternatively, if not receiving complete RDS instructions, the device is additionally operable to：Judge whether to detect RDS frames；Such as
Fruit is judged, then judges whether the received quantity of RDS frames exceedes predetermined number, and judges that can RDS frames form one completely
RDS instruction；If it is judged that it is no, then judge whether signal strength is in abnormality；If it is judged that it is then to remove and start broadcasting
Frequency list, and the First Input First Output of each frequency in frequency list of starting broadcasting is removed, and poll cuts frequency list, with determination
One to be switched dominant frequency.
Alternatively, after message queue is obtained, the device is additionally operable to：Determine to send to start broadcasting based on message and maintain instruction
Frequency, and after maintenance instruction of starting broadcasting is received, start the countdown held time；It is determined that the countdown held time whether
Terminate；If it is determined that terminating, then control, which sends to start broadcasting, maintains the frequency of instruction to break；Update to send in frequency list of starting broadcasting and open
The start-stop for broadcasting the frequency for maintaining instruction broadcasts state；The frequency of highest priority is selected to open in frequency list of starting broadcasting after the updating
Broadcast, wherein, after the frequency of selection highest priority starts broadcasting, poll cuts frequency list, to determine next to be switched dominant frequency.
In addition, in the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
The method of reseptance of RDS a kind of and the computer program product of device that the embodiment of the present invention is provided, including storage
The computer-readable recording medium of the executable non-volatile program code of processor, instruction that program code includes can be used for
The method in previous methods embodiment is performed, specific implementation can be found in embodiment of the method, will not be repeated here.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, can be with
Realize by another way.Device embodiment described above is only schematical, for example, the division of unit, only
For a kind of division of logic function, there can be other dividing mode when actually realizing, in another example, multiple units or component can be tied
Another system is closed or is desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or discussed
Mutual coupling or direct-coupling or communication connection can be the INDIRECT COUPLINGs by some communication interfaces, device or unit
Or communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, be shown as unit
Part can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple networks
On unit.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
If function is realized in the form of SFU software functional unit and as independent production marketing or in use, can stored
In the non-volatile computer read/write memory medium that a processor can perform.Based on such understanding, skill of the invention
The part or the part of the technical scheme that art scheme substantially contributes to prior art in other words can be with software products
Form embody, the computer software product is stored in a storage medium, including some instructions are causing one
Computer equipment (can be personal computer, server, or network equipment etc.) performs each embodiment method of the present invention
All or part of step.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
Finally it should be noted that：Above example, it is only the embodiment of the present invention, to illustrate the skill of the present invention
Art scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although entering with reference to the foregoing embodiments to the present invention
Go detailed description, it will be understood by those within the art that：Any one skilled in the art is at this
Invent in the technical scope disclosed, it still can modify to the technical scheme described in previous embodiment or can think easily
Equivalent substitution is carried out to change, or to which part technical characteristic；And these modifications, change or replacement, do not make corresponding
The essence of technical scheme departs from the spirit and scope of technical scheme of the embodiment of the present invention, should all cover in protection scope of the present invention
Within.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
- A kind of 1. RDS method of reseptance, it is characterised in that including：Message queue is obtained, the message queue includes the message that at least one frequency is sent；Judge the heartbeat instruction of target dominant frequency whether is received in preset time period based on the message, the target dominant frequency is Any one frequency at least one frequency；In the case where judging not receive the heartbeat instruction of the target dominant frequency, the target dominant frequency is arranged added to frequency is cut Table, described cut comprise at least afterbody dominant frequency in frequency list, the afterbody dominant frequency is last in wired frequency modulation networking Primary network station point；Frequency list is cut described in poll, to lock next to be switched dominant frequency, and the dominant frequency by currently having switched receives RDS and referred to Order；Detect whether the target dominant frequency recovers normal, wherein, when the target dominant frequency recovers normal, by the target dominant frequency Removed from described cut in frequency list.
- 2. according to the method for claim 1, it is characterised in that detect whether the target dominant frequency is recovered normally to include：The RDS frames that the target dominant frequency is sent are obtained in the message queue；Judge whether to receive complete RDS instructions based on the RDS frames；If receiving the complete RDS instructions, it is described cut frequency list in inquiry refer to the presence or absence of the complete RDS The source of order, and judge whether the complete RDS instructions are received by the first frequency, wherein, the priority of first frequency Less than the priority of the target dominant frequency；If it is judged that be then to detect that the target dominant frequency recovers normal, wherein, when the target dominant frequency recovers normal, The target dominant frequency is removed from described cut in frequency list.
- 3. according to the method for claim 2, it is characterised in that removing the target dominant frequency in frequency list from described cut Afterwards, methods described also includes：Obtain the RDS instructions that at least one frequency is sent；Judge whether the RDS instructions that at least one frequency is sent are target instruction target word, wherein, the target instruction target word includes starting broadcasting Maintain instruction or break instruction；If it is judged that being, then the start-stop of the frequency of the renewal transmission RDS instructions broadcasts state in frequency list of starting broadcasting；Frequency based on the frequency list selection highest priority that starts broadcasting described in after renewal starts broadcasting；Wherein, select it is described Frequency list is cut after the frequency of highest priority, described in poll, to determine next to be switched dominant frequency.
- 4. according to the method for claim 3, it is characterised in that if it is judged that no, methods described also includes：When receiving dominant frequency and setting instruction, removing is started broadcasting frequency list, and each frequency in frequency list of starting broadcasting described in removing The First Input First Output of point, and frequency list of being started broadcasting according to the dominant frequency sets instruction renewal again；Control terminal relocks the dominant frequency of lowermost level in frequency list in described cut, and the dominant frequency for passing through the lowermost level receives RDS is instructed, wherein, after RDS instructions are received by the dominant frequency of the lowermost level, frequency list is cut described in poll, with determination One to be switched dominant frequency.
- 5. according to the method for claim 2, it is characterised in that if not receiving the complete RDS instructions, the side Method also includes：Judge whether to detect RDS frames；If it is judged that being whether the received quantity for then judging the RDS frames exceedes predetermined number, and judge the RDS frames energy The no complete RDS instructions of composition one；If it is judged that it is no, then judge whether signal strength is in abnormality；If it is judged that be, then frequency list of starting broadcasting is removed, and each frequency first enters in frequency list of starting broadcasting described in removing First dequeue, and frequency list is cut described in poll, to determine next to be switched dominant frequency.
- 6. according to the method for claim 1, it is characterised in that after message queue is obtained, methods described also includes：Determine to send based on the message to start broadcasting and maintain the frequency of instruction, and after the maintenance instruction of starting broadcasting is received, open The countdown that beginning holds time；It is determined that whether the countdown held time terminates；If it is determined that terminating, then being started broadcasting described in control transmission maintains the frequency of instruction to break；The start-stop for updating the frequency for maintaining instruction that started broadcasting described in being sent in frequency list of starting broadcasting broadcasts state；The frequency of highest priority is selected to start broadcasting in the frequency list of starting broadcasting after the updating, wherein, in selection priority Frequency list is cut after highest frequency starts broadcasting, described in poll, to determine next to be switched dominant frequency.
- A kind of 7. RDS reception device, it is characterised in that including：First acquisition unit, for obtaining message queue, the message queue includes the message that at least one frequency is sent；First judging unit, the heartbeat for judging whether to receive target dominant frequency in preset time period based on the message refer to Order, the target dominant frequency are any one frequency at least one frequency；Adding device, in the case where judging not receive the heartbeat instruction of the target dominant frequency, by the target master Frequency is added to and cuts frequency list；Poll units, for cutting frequency list described in poll, to lock next to be switched dominant frequency, and by currently having switched Dominant frequency receives RDS instructions；Detection unit, for detecting whether the target dominant frequency recovers normal, wherein, when the target dominant frequency recovers normal, The target dominant frequency is removed from described cut in frequency list.
- 8. device according to claim 7, it is characterised in that detection unit is used for：The RDS frames that the target dominant frequency is sent are obtained in real time；Judge whether to receive complete RDS instructions based on the RDS frames；If receiving the complete RDS instructions, it is described cut frequency list in inquiry refer to the presence or absence of the complete RDS The source of order, and judge whether the complete RDS instructions are received by the first frequency, wherein, the priority of first frequency Less than the priority of the target dominant frequency；If it is judged that be then to detect that the target dominant frequency recovers normal, wherein, when the target dominant frequency recovers normal, The target dominant frequency is removed from described cut in frequency list.
- 9. device according to claim 8, it is characterised in that described device also includes：Second acquisition unit, for by the target dominant frequency from it is described cut remove in frequency list after, obtain described at least one The RDS instructions that individual frequency is sent；Second judging unit, for judging whether the RDS instructions that at least one frequency is sent are target instruction target word, wherein, institute Stating target instruction target word includes starting broadcasting maintenance instruction or breaks instruction；Updating block, for if it is judged that being, then renewal to send opening for the frequency of the RDS instructions in frequency list of starting broadcasting Break state；Selecting unit, started broadcasting for the frequency based on the frequency list selection highest priority that starts broadcasting described in after renewal；Wherein, Frequency list is cut after the frequency of the highest priority is selected, described in poll, to determine next to be switched dominant frequency.
- 10. device according to claim 9, it is characterised in that described device also includes：Clearing cell, for judge it is no in the case of, when receiving dominant frequency and setting instruction, removing is started broadcasting frequency list, And each First Input First Output of frequency, and set and instructed again more according to the dominant frequency in frequency list of being started broadcasting described in removing The new frequency list of starting broadcasting；Control unit, for controlling terminal to relock the dominant frequency of lowermost level in frequency list in described cut, and by described minimum The dominant frequency of level receives RDS instructions, wherein, after RDS instructions are received by the dominant frequency of the lowermost level, frequency is cut described in poll and is arranged Table, to determine next to be switched dominant frequency.
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