CN106550265A - Frequency Forecasting Methodology and the image processing apparatus using the method - Google Patents
Frequency Forecasting Methodology and the image processing apparatus using the method Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
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Abstract
Disclosed herein a kind of frequency Forecasting Methodology and the image player using the method, for determining to receive multiple prediction frequencies of signal of video signal for image player according to this, comprising：Receive a channel switch signal；According to this, channel switch signal deciding is multiple predicts the outcome, and wherein those predict the outcome with a priority；And predict the outcome according to those and fixed those prediction frequencies of channel frequency correspondence voting.
Description
Technical field
The present invention is with regard to frequency handover and prediction, especially with respect to frequency Forecasting Methodology and using the method
Image processing apparatus.
Background technology
In order to provide preferably viewing experience, many image processing apparatus (such as TVs, Set Top Box (set-top
Box it is) etc.) using multiple tuners anticipating the channel that the next one may be selected therefore how accurate
Really the next channel of prediction user becomes an important mechanisms in this image processing apparatus.
The content of the invention
In view of the deficiency of prior art, a purpose of the present invention is to provide a kind of frequency Forecasting Methodology and application
The image processing apparatus of the method, to provide accurate frequency or channel prediction.
Disclosed herein a kind of frequency Forecasting Methodology, for determining to receive shadow according to this for an image player
Multiple prediction frequencies of picture signal, comprising：Receive a channel switch signal；Determine according to the channel switch signal
Calmly multiple to predict the outcome, wherein those predict the outcome with a priority；And predict the outcome according to those
And fixed those prediction frequencies of channel frequency correspondence voting.
The present invention separately discloses a kind of image player, for determining multiple prediction frequencies and receiving shadow according to this
Picture signal, comprising：One memorizer, storage one channel frequency correspondence table；One receptor, receives a channel and cuts
Change signal；One frequency decision module, according to this, channel switch signal deciding is multiple predicts the outcome, those predictions
As a result there is a priority, the frequency decision module simultaneously predicts the outcome according to those and the channel frequency correspondence
Fixed those prediction frequencies of voting；And multiple tuners, signal of video signal is received according to those target frequencies.
The present invention separately discloses a kind of method for updating channel selection record, is applied to an image player,
The image player system determines multiple prediction frequencies according to the channel selection record and receives image letter according to this
Number, the channel selection is recorded to record a channel switch signal, an another channel switch signal, Yi Jiyi
Count value, the method are included：When the image player according to the first channel switch signal from a previous frequency
Road switches to one first channel, and from first channel switch to second channel, and first channel switch
Signal system then updates the count value corresponding to a channel number information of first channel.
The frequency Forecasting Methodology of the present invention and accurate frequency can be provided using the image processing apparatus of the method
Point or channel prediction, to lift the viewing experience of user.Compared to known techniques, the present invention is cut according to channel
The species for changing signal provides different forecasting mechanisms, and is more accurately predicted the outcome.
Feature for the present invention, implementation and effect, hereby coordinate schema to make embodiment detailed description as follows.
Description of the drawings
Fig. 1 is the functional block diagram of image processing apparatus of the present invention；And
Fig. 2 a～2d is the flow chart of the frequency prediction algorithm of the present invention.
Symbol description
100 image processing apparatus
110 RF front-end circuits
120 transmission stream processors
130 decoders
140 receptors
150 frequency decision modules
160 radio-frequency front-ends manage circuit
180 memorizeies
182 channel frequencies correspondence table
184 frequencies select record
186 channel selections are recorded
S210～S260 steps
Specific embodiment
The disclosure of the present invention includes frequency Forecasting Methodology and the image processing apparatus using the method.In reality
Apply as under the premise of possible, the art tool usually intellectual can come according to the disclosure of this specification
Select equivalent element or step to realize the present invention, that is, the enforcement chatted after the enforcement of the present invention is not limited to
Example.
Fig. 1 is the functional block diagram of image processing apparatus of the present invention.RF front-end circuit 110 receives radio frequency letter
Number, each RF front-end circuit 110 is using tuner and demodulator of its inside come respectively by radiofrequency signal
Intermediate frequency is down to by radio frequency and analog format is switched to by number format.Crossfire transmission processor 120 is from radio-frequency front-end
After the digital signal that circuit 110 is produced filters out the package of correlation, image and audio frequency are carried out by decoder 130
Decoding, finally produce video-audio data.Crossfire transmission processor 120 can also produce channel information and be stored in be deposited
In reservoir 180.On the other hand, receptor 140 is received and (is for example applied to from image processing apparatus 100
TV or Set Top Box) outside channel switch signal (for example being sent by a remote control), and trigger frequency and determine
Cover half block 150.The algorithm of the built-in prediction frequency of frequency decision module 150, the algorithm can be with program code
Form be stored in memorizer (can from memorizer 180 be same or different physical memory).It is real one
Apply in example, frequency decision module 150 can be central processing unit or arithmetic element, and which performs the program code
And prediction frequency point data is drawn with reference to the data in memorizer 180, last radio-frequency front-end management circuit 160 is again
According to the frequency that the prediction frequency point data control RF front-end circuit 110 should be chosen.Frequency generation referred to herein
The frequency of one transmission stream of table (transport stream).
Fig. 2 a are the flow chart of the frequency prediction algorithm of the present invention.When frequency decision module 150 receives frequency
After road switching signal (step S210), first judge that whether channel switch signal is the numeral keys on remote control
Or its equivalent button is triggered, that is, judge channel switch signal whether with channel number information (step
S220).If NO, then (the step that predicts the outcome is produced according to the channel and the first subalgorithm currently played
Rapid S230)；If YES, then prediction knot is produced according to the channel and the second subalgorithm currently played
Really (step S240).Next predict the outcome according to this again and channel frequency correspondence table 182 is predicted
Frequency priority (step S250), it is last according to prediction frequency priority and RF front-end circuit 110
Number (that is, number of tuner) produce prediction frequency point data (step S260).
Fig. 2 b are the detailed process of the first subalgorithm.It is in addition to numeral keys, common on general remote control
Zap keys also include upper key (or the equivalent keys of the class of "+", make current channel add 1),
Lower key (or equivalent keys of the class of "-", make current channel down 1), return key (return previous receipts
The channel seen) etc., the different channel switch signal of each zap keys correspondence.Image processing apparatus 100
Channel switching event can occur immediately according to the channel switch signal triggered by upper key, lower key and return key etc.；
Relative, must be reached by the channel switch signal triggered by numeral keys (below will be detailed after certain condition
Illustrate) channel switching event can just occur.Drill in method in the first son, first one is obtained according to channel switch signal
Group predictive channel (step S232).In one embodiment, in correspondence key, lower key and return key it is pre-
Measured channel can be respectively：{ cur, up, down, ret }, { cur, down, up, ret } and cur, ret, up,
Down }, cur represents the channel (such as channel 151) currently watched, up represents the next one of cur
Channel (such as channel 152), down represent a upper channel (such as channel 150) of cur, ret generations
(for example this channel switch is triggered the channel once watched before table by upper key, then 150) ret represents channel.
Higher priority is indicated on the more left side in predictive channel, in more detail, with the predictive channel of lower key
As a example by ({ cur, down, up, ret }), cur is the channel after switching, has naturally a highest priority, down,
The order of up, ret represents user after specifically lower key is pressed, next most possible to continue by lower key, its
It is secondary for upper key and return key, so preparing what next user may take in advance with such priority
Channel.
After obtaining the predictive channel, record 184 is selected come (the step that predicted the outcome with reference next to frequency
S234).Frequency selects the number of times that record 184 is that frequency is selected through numeral keys, such as with following shape
Formula is stored in memorizer 180.
Frequency represents the frequency of a transmission stream, and several channels may correspond to same frequency.Each user
After numeral keys' switching channels, frequency selects record 184 be updated, that is, the channel institute being selected
The selection number of times of corresponding frequency can Jia 1.The form for predicting the outcome is as follows：{ predictive channel, frequency select note
Record }.Therefore with above-mentioned example for, after pressing key obtained by predict the outcome for 151,152,150,
150, C, A, B, D }, its intermediate-frequeney point selects the foundation in predicting the outcome of record 184 to be previously selected number of times
Number sequential from left to right.It is similar, higher priority is indicated on the more left side in predicting the outcome.
Afterwards the step of, S236 judged whether previous channel switch is triggered by numeral keys, that is, judged correspondence
Whether the channel switch signal of previous channel switch includes channel number information, and decides whether to carry out step
S238.The judged result for first assuming step S236 herein is no, and step S236 and step S238 remain it
After describe in detail.
Please continue to refer to Fig. 2 a, following step S250 foundation predicts the outcome and channel frequency correspondence table 182
Obtain predicting frequency priority.Channel frequency correspondence table 182 record channel and the corresponding relation of frequency, store up
Exist in memorizer 180, the form storage of such as following table：
Therefore, after reference radio channel frequency correspondence table 182, it is above-mentioned predict the outcome 151,152,150,150, C,
A, B, D } prediction frequency priority { A, B, A, A, C, A, B, D } can be converted to.Following step
S260 is filtered out and RF front-end circuit 110 from prediction frequency priority { A, B, A, A, C, A, B, D }
The suitable non-duplicate frequency of number, as prediction frequency point data.Can be with (preferential from left to right during screening
Power from high to low) order from prediction frequency priority choose do not repeat frequency, until predict frequency number
Frequency points according in are equal to the frequency in the number of RF front-end circuit 110, or prediction frequency priority
All screening is finished point.Assume a total of 3 RF front-end circuits 110, the then pre- frequency measurement for finally obtaining
Point data is { A, B, C }；And when having 4 RF front-end circuits 110 prediction frequency point data then for A, B, C,
D}.Prediction frequency point data in frequency order without the need for special arrangements, as long as each frequency all has corresponding radio frequency
The process of front-end circuit 110.
Fig. 2 c are the detailed process of an embodiment of the second subalgorithm.When channel switch signal carries channel
Number information, determines whether whether the digital number being input at present is equal to the digit (step of all channel numbers
Rapid S241).For example, if the channel that can be watched is a total of 99, the digit of all channel numbers
For 2 digits, if 999, then it is 3 digits.By taking 3 digits as an example, user is with numeral keys' switching frequency
Input sequence during road is hundred-→ ten → individual position.Hold previous example, it is assumed that user is from channel 150
It is intended to be switched to target channel 171 again after being switched to channel 151, then when the 1st input of user (by numeral
1), the digital number (1) being input at present is not equal to the digit (3) of channel, so step S241 to key
It is judged as NO.Next step S242 continue to judge the digital number that has been input at present whether with all channels
Several digit differences 1In more detail, this step is to judge whether user this input is channel
Tens.In this example, the digital number (1) being input at present is differed with the digit (3) of all channel numbers
2, so carrying out step S245 afterwards.
The time whether long (reaching a Preset Time) of step S245 judging distance input next time, or
User determines the channel being input into.When the rapid S245 of frequency is judged as YES, represents and channel switching event occurs.Lift
For example, such as user waits long after pressing numeral keys 1, or, pressing number becomes the target of user
Channel, the channel currently played are immediately switched to channel 1.If target channel it has been determined that if carry out
Step S246, otherwise returns to step S241.It is assumed herein that user presses number not less than the Preset Time
Keyboard 7, now step S241 judge still as no (the digital number being input into be 2), into step
S242；The result that now step S242 judges is yes, into step S243.Step S243 is according at present
The numeral being input into produces candidate channel.Candidate channel is the possibility channel with the digital correlation being input at present,
The numeral being for example now input into is 17, then possible channel is 17 and 170～179, totally 11 channels.Connect
, the candidate channel is combined generation one and predicts the outcome (step S244) with one group of predictive channel.Pre- frequency measurement
Road is, for example, { cur, up, down, ret }, then it is { cur, candidate channel, up, down, ret } to predict the outcome,
Explained with actual numeral, hold example (the road frequency of script is 151) can predict the outcome for 151,17,
170～179,152,150,150 } (more the left side has higher priority).It should be noted that now also
Really there is no channel switch, so the parameter such as the cur in predicting the outcome, up, down and ret is still with mesh
The channel (i.e. 151) of front broadcasting is references object.After the completion of step S244, on the one hand return to Fig. 2 a after
It is continuous to carry out step S250 and step S260 to produce prediction frequency point data, so that radio-frequency front-end management circuit
160 can change the frequency of RF front-end circuit 110 to prepare for according to this, on the one hand in the program of Fig. 2 c
In proceed step S245.
If user now completes the unitss of inputting channel 171, following step S241 in Preset Time
Judged result be yes, subsequently into step S246, that is, according to input numeral and channel selection record
186 produce candidate channel.For example, following table is the partial information that channel selection record 186 may be recorded：
According to statistics, after user is switched to certain channel with numeral keys, continues above key and lower key browses the frequency
The chance of the channel near road is very high.The channel for being possibly due to same type is mostly concentrated arrangement, therefore is made
User is easy to when wanting to watch the program of the type (such as film), is first switched to a wherein channel and is held again
It is continuous to press key or lower key to browse the content of all same type channels.So can according to channel selection record 186
With the channel that more Accurate Prediction user will switch.Continue the example above, current 171 (input of channel
There is channel switch after complete unitss) it is corresponding it is next may action be：Press key (12 times) and defeated
Enter 55 (7 times), therefore can now find candidate channel and (can also only take number of times to exceed for 172 and 55
Default marginal value person, such as marginal value are 10, then only take channel 172).
Next record 184 is selected to obtain prediction knot according to candidate channel, one group of predictive channel and the frequency
Really (step S247).Predictive channel herein may, for example, be { cur, down, up, ret }, then prediction knot
Fruit can be { cur, candidate channel, down, up, ret, frequency select record }.Explained with actual numeral,
Hold example to predict the outcome as { 171,172,55,170,172,151, C, A, B, D }.It should be noted that
The parameters such as the cur in predicting the outcome, down, up and ret be still with the current channel played as references object,
But now there is channel switch, so the parameter such as the cur in predicting the outcome, down, up and ret be with
Channel (i.e. 171) after switching is references object.Note is selected according to the channel update frequency after switching afterwards
Record 184 and/or channel selection record 186 (steps S248).According to channel frequency correspondence table 182, switching
171 corresponding frequency C of channel afterwards, so the frequency after updating selects the selection number of times of 184 frequency C of record
It is changed into 11, remaining is constant；If additionally, switching before channel (i.e. 151) be to be chosen by Direct Digital key,
Then this step must update channel selection record 186 in addition, that is, correspondence channel is " 151 " and next action
Number of times for " switching to channel 171 " will be changed into 7 times from 6 times.After the completion of step S248, continue into
The step of row Fig. 2 a S250.But if (17 have been input into) in above-mentioned step S245 more than default
Time or channel determine, then according to channel selection record 186 above, in following step S246
Candidate channel will be obtained for 18,16 and 137.
Fig. 2 d are the detailed process of another embodiment of the second subalgorithm.When the numeral being input at present
Number is not up to the digit (step S241) of all channel numbers, then produce time according to the numeral being input at present
Frequency-selecting road (step S243).For example, when the hundreds word of target channel 171 is input into, step
S243 produces totally 11 channels of candidate channel 1 and 10～19 according to the numeral (1) being input at present,
Or 1,10～19 and 100～199 totally 111 channels, flow process below is identical with the embodiment of Fig. 2 c,
Repeat no more.And when step S243 is entered second (numeral being now input at present is 17), institute
The candidate channel of generation is 17 and 170～179 totally 11 channels.The flow process difference of Fig. 2 d and Fig. 2 c exists
It is different in the opportunity for producing candidate channel.
Assume that user is switched to channel 171 by channel 151 and upper key is subsequently pressed with viewing channel 172, then again
Into the flow process of Fig. 2 b, this time the step of S236 will to obtain judged result be yes, and proceed step
S238, that is, be that " 171 " and next action are changed into from 12 times for the number of times of " up " by correspondence channel
13 times, subsequently carry out step S250.
Note that the digit difference of above-mentioned step S242 can be set as other numerals, for example, be set to 2,
Then when 171 hundreds word 1 is input into, step S243 will produce 1,10～19 and 100～199 etc.
111 candidate channels.Additionally, also can by the present invention using local channel and not all channel, for example
Predict in " my favorite " list of user；Also or according to channel attribute, will with currently
During the generic channel of the channel watched adds candidate channel, the attribute of channel can for example from electronic program list
(electronic program guide) learns.Furthermore, the present invention also can according to when catch cropping prediction, citing come
Say, user is often daily 19:00 viewing channel 155, then frequency decision module 150 of the invention
Actively can watch that custom decision predicts the outcome according to user when the time is close to.If image procossing
Device (such as intelligent television) that device 100 is applied it is desirable user information, then the present invention also can be right
Answer different users to set up different frequencies and select record 184 and channel selection record 186.Above-mentioned frequency
Road selects record 186 also add more historical informations that following table is changed to improve the accuracy of prediction, such as
Form：
Embodiments of the invention as described above, but those embodiments not be used for limit the present invention, this technology
Field tool usually intellectual can be according to the content expressed or imply of the present invention to technical characteristic of the invention
Change is imposed, all this kind change may belong to the patent protection category sought by the present invention, in other words,
The scope of patent protection of the present invention must be defined depending on the as defined in claim of this specification.
Claims (17)
1. a kind of frequency Forecasting Methodology, for determining to receive signal of video signal according to this for an image player
Multiple prediction frequencies, comprising：
Receive a channel switch signal；
According to this, channel switch signal deciding is multiple predicts the outcome, and wherein those predict the outcome preferential suitable with one
Sequence；And
Predict the outcome according to those and fixed those prediction frequencies of channel frequency correspondence voting.
2. frequency Forecasting Methodology as claimed in claim 1, it is characterised in that this is according to the channel switch
Signal deciding those include the step of predict the outcome：
Multiple predictive channels are determined according to a current broadcasting channel；And
Determine that those predict the outcome according to those predictive channels.
3. frequency Forecasting Methodology as claimed in claim 1, it is characterised in that this is according to the channel switch
Signal deciding those include the step of predict the outcome：
If the channel switch signal packet contains a channel number information, determine according to the channel number information multiple
Candidate channel, the seniority top digit of the channel number of those candidate channels correspond to the channel number information；And
Determine that those predict the outcome according to those candidate channels.
4. frequency Forecasting Methodology as claimed in claim 1, it is characterised in that this is according to the channel switch
Signal deciding those include the step of predict the outcome：
If the channel switch signal packet contains multiple channel number information, and the quantity of those channel number information reaches
To a default value, then multiple candidate channels, the frequency of those candidate channels are determined according to those channel number information
The seniority top digit of road numbering corresponds to those channel number information；And
Determine that those predict the outcome according to those candidate channels.
5. frequency Forecasting Methodology as claimed in claim 1, it is characterised in that this is according to the channel switch
Signal deciding those include the step of predict the outcome：
If the channel switch signal packet contains a channel number information, according to the channel number information and a channel
Record is selected to determine a candidate channel, channel selection record is to record the channel switch signal, another
Channel switch signal and a count value, the count value receive the channel corresponding to the image player and cut
The number of times of another channel switch signal is received after changing signal；And
Determine that those predict the outcome according to the candidate channel.
6. frequency Forecasting Methodology as claimed in claim 1, it is characterised in that this is according to the channel switch
Signal deciding those include the step of predict the outcome：
Record is selected to determine candidate's frequency according to a frequency, the frequency selects record to record the frequency
It is selected number of times；And
Determine that those predict the outcome according to candidate's frequency.
7. frequency Forecasting Methodology as claimed in claim 6, it is characterised in that this is according to the channel switch
Signal deciding those further include the step of predict the outcome：
Multiple predictive channels are determined according to a current broadcasting channel；And
Determine that those predict the outcome according to those predictive channels, wherein, corresponding to the frequency of those predictive channels
Priority be higher than candidate's frequency.
8. frequency Forecasting Methodology as claimed in claim 1, it is characterised in that the image player bag
Containing multiple tuners, the method is further included：
Those prediction frequencies are screened, makes the number of the prediction frequency after screening be not more than the number of those tuners；
Wherein, those tuners are respectively to receive the signal of video signal according to the prediction frequency after those screenings.
9. a kind of image player, for determining multiple prediction frequencies and receiving signal of video signal according to this, wraps
Contain：
One memorizer, storage one channel frequency correspondence table；
One receptor, receives a channel switch signal；
One frequency decision module, according to this, channel switch signal deciding is multiple predicts the outcome, and those predict the outcome
With a priority, the frequency decision module simultaneously predicts the outcome according to those and the channel frequency correspondence voting
Fixed those prediction frequencies；And
Multiple tuners, receive signal of video signal according to those target frequencies.
10. image player as claimed in claim 9, it is characterised in that the frequency decision module according to
Multiple predictive channels are determined according to a current broadcasting channel, and those predictions are determined according to those predictive channels
As a result.
11. image players as claimed in claim 9, it is characterised in that if the channel switch signal
Comprising a channel number information, then the frequency decision module is according to the multiple candidates' frequencies of channel number information decision
Road, the seniority top digit of the channel number of those candidate channels correspond to the channel number information, and the frequency is determined
According to those candidate channels, module determines that those predict the outcome.
12. image players as claimed in claim 9, it is characterised in that if the channel switch signal
Comprising multiple channel number information, and those quantity for arriving frequently number information reach a default value, then the frequency
Decision module determines multiple candidate channels, the channel number of those candidate channels according to those channel number information
Seniority top digit correspond to the channel number information, and the frequency decision module determine according to those candidate channels should
Predict the outcome.
13. image players as claimed in claim 9, it is characterised in that if the channel switch signal
Comprising a channel number information, then the frequency decision module is according to the channel number information and channel selection note
Record determines a candidate channel, and the channel selection is recorded to record the channel switch signal, an another channel
Switching signal and a count value, the count value receive the channel switch corresponding to the image player and believe
The number of times of another channel switch signal is received after number, and the frequency decision module is determined according to the candidate channel
Those predict the outcome.
14. image players as claimed in claim 9, it is characterised in that the frequency decision module is more
Record is selected to determine candidate's frequency according to a frequency, the frequency selects record to record the selected of the frequency
Number of times is taken, and according to candidate's frequency, the frequency decision module determines that those predict the outcome.
15. image players as claimed in claim 14, it is characterised in that the frequency decision module
Multiple predictive channels are determined according to a current broadcasting channel, and those prediction knots are determined according to those predictive channels
Really, and corresponding to those predictive channels frequency priority be higher than candidate's frequency.
16. image players as claimed in claim 9, it is characterised in that the frequency decision module is more
Those prediction frequencies are screened, makes the number of the prediction frequency after screening be not more than the number of those tuners, and
Those tuners are respectively to receive the signal of video signal according to the prediction frequency after those screenings.
A kind of 17. methods for updating channel selection record, are applied to an image player, and the image is broadcast
Put device to determine multiple prediction frequencies according to the channel selection record and receive signal of video signal according to this, channel choosing
Record is selected to record a channel switch signal, an another channel switch signal and a count value, the party
Method is included：
When the image player switches to one first from a previous channel according to the first channel switch signal
Channel, and from first channel switch to second channel, and the first channel switch signal corresponding to this
One channel number information of one channel, then update the count value.
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