CN100348019C - Digital television and automatic switching method between channels - Google Patents
Digital television and automatic switching method between channels Download PDFInfo
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- CN100348019C CN100348019C CNB2004100206049A CN200410020604A CN100348019C CN 100348019 C CN100348019 C CN 100348019C CN B2004100206049 A CNB2004100206049 A CN B2004100206049A CN 200410020604 A CN200410020604 A CN 200410020604A CN 100348019 C CN100348019 C CN 100348019C
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Abstract
The present invention relates to a digital television set and an automatic channel conversion method thereof. The method is used to inform a viewer of an automatic channel conversion message in advance and inform converted channels after channel conversion so as not to confuse the viewer. The automatic channel conversion method is composed of the stages: judging if an announcement of channel conversion information exists in broadcast signals of a channel which is televiewed by the viewer; displaying a forenotice of the channel conversion message on a frame before a channel broadcast is finished if the announcement of the channel conversion information is contained in the broadcast signals; changing to other channels if a channel broadcast which is televiewed by the viewer is finished or interrupted; displaying a channel conversion acknowledgement message on the frame. The present invention has the advantage that the present invention prevents the confusing effect caused by that the viewer is unaware of the channel conversion yet.
Description
Technical field
The present invention relates to a kind of television set, relate in particular to a kind of Digital Television and channel automatic switching method thereof.
Background technology
Usually, digital broadcasting will together transmit additional data with view data and sound data, thereby provide multiple service to looking the hearer.But, digital television broadcasting, also different with regional different frequency bands, and the frequency band that uses also will be restricted, therefore in the frequency band that limits (for example, being 7MHz), in order to go to transmit single-definition (SD) broadcasting and broadcast high definition (HD) broadcasting of comparing the big several times of data with single-definition in Australia, need in the time period of transmitting high definition broadcasts, go to interrupt being equivalent to the single-definition broadcasting of high definition broadcasts size of data.
As mentioned above, during carrying out high definition broadcasts, when going to interrupt the broadcasting of several single-definitions, the channel of single-definition broadcasting will become no signal condition; Therefore, for fear of providing the picture of no signal condition to looking the hearer, TV will be transformed on other the channel automatically.Especially in digital video broadcasting (DVB) mode of Europe and the Australian digital broadcasting specification of using,, utilization is comprised the linkage descriptor of channel switch relevant information in order to carry out above-mentioned automatic channel conversion.
Linkage descriptor will be included in the Program Specific Information that transmits stream (TS), and utilize this Program Specific Information to remove to change automatically broadcast program.Below with reference to Fig. 1 this method is described.
As shown in Figure 1, in single-definition broadcasting (service identifiers=1070 of carrying out four channels, 1071,1072,1073) in, if to ten o'clock carrying out high definition broadcasts, so in the single-definition broadcasting of four channels, to there be three (service identifiers=1071,1072,1073) to be interrupted.So 10 will have later a single-definition broadcasting and a high definition broadcasts to broadcast.
If, look the hearer just in the audiovisual single-definition broadcasting, when service identifiers is ' 1071 ' broadcasting,, look the just channel in audiovisual of hearer so if begin to carry out high definition broadcasts, will become does not have the no signal of broadcast image channel.
And, the control part of television set will go to analyze the link identifiers in the Program Specific Information that transmits stream, and will convert the broadcast program that link identifiers is indicated to, promptly service identifiers is ' 1070 ' broadcast program, thereby can prevent to look the channel of hearer's audiovisual no signal.
The TV of conventional art if begin to play high definition broadcasts, is looked the broadcast program of the single-definition of hearer's audiovisual so, will be moved to end, and be automatically converted into other channel; Therefore from looking hearer's position and since with own will irrelevant be converted into other channel, thereby exist the problem that causes confusion.
Summary of the invention
The present invention provides a kind of digital television and channel automatic switching method thereof in order to solve the above problems, utilize this method when carrying out high definition broadcasts, utilize link identifiers information to come to predict the channel message of conversion automatically to looking the hearer in advance, and after channel switch, will inform the channel that is converted, in case look hearer's confusion reigned.
Digital Television of the present invention is to be made of following structure: it will receive by looking the channel broadcasting signal that the hearer selects to be provided with a multichannel dispenser, then with output image information, and sound information, and additional information; Be provided with a video/audio decoder, it will be decoded to image information and sound information; Be provided with a video/audio handling part, it will receive the output signal by video/audio decoder, and the picture signal and the audio signal of output formation picture-and-sound respectively; Be provided with a data analysis portion, it will go to analyze the additional information by the output of multichannel dispenser; Be provided with a database, it will be stored from the additional information of data analysis portion output; Also be provided with a memory, it is predicted image information and the expression that channel switch message uses with storage representation and confirms the image information that channel switch message is used; Be provided with a control part, if in depositing the additional information of database in, have link identifiers, so in time of each setting, this control part will be predicted the image information that channel switch message is used to video/audio handling part output expression, confirm the image information that channel switch message is used with expression, if start broadcasting high definition broadcasts, its can be from looking channel switch that the hearer selects to appointed channel so.
Digital Television of the present invention can also be made of following structure: be provided with a multichannel dispenser, it will receive by looking the channel broadcasting signal that the hearer selects, then with output image information, and sound information, and additional information; Be provided with a video/audio decoder, it will be decoded to image information and sound information; Be provided with a video/audio handling part, it will receive the output signal by video/audio decoder, and the picture signal and the audio signal of output formation picture-and-sound respectively; Be provided with a data analysis portion, it will go to analyze the additional information by the output of multichannel dispenser; Be provided with a database, it will be stored from the additional information of data analysis portion output; Also be provided with a memory, it is predicted image information and the expression that channel switch message uses with storage representation and confirms the image information that channel switch message is used; Also be provided with a control part, this control part will go to judge in the channel broadcasting signal in looking hearer's audiovisual whether contain the information of informing channel switch, if contain the information of informing channel switch in broadcast singal, it will remove to generate advance notice channel switch signal so; Also be provided with a display part, it wanted the message of converted channel to looking hearer's announcement before channel switch.
Channel automatic switching method of the present invention was made of the following stage: (a) looking the hearer just in the channel broadcasting signal in audiovisual, go to judge whether to contain the stage of announcement channel switch information; (b) if in broadcast singal, contain announcement channel switch information, before finishing channel broadcasting, will on picture, show the stage of advance notice channel switch message so; (c) if look the just end of the channel broadcasting in audiovisual of hearer, perhaps interrupt, so just go to be transformed into the stage of other channel; (d) stage of indicated channel conversion acknowledge message on picture.
Channel automatic switching method of the present invention can also be made of the following stage: (a) in the broadcast program additional information of looking hearer's selection, go to judge whether to contain the stage of announcement channel switch information; (b), will go to confirm the stage of the remaining time of broadcast program so if in additional information, contain announcement channel switch information; (c) stage of indicated channel conversion advance notice message on picture; (d) judge the stage whether broadcast program finishes; (e), so just go to be transformed into the stage of specified channel if broadcast program finishes; (f) stage of indicated channel conversion acknowledge message on picture.
In addition, also comprise the following stage, that is: be provided with on picture and after the indicated channel conversion acknowledge message, whether go to judge on other channel in the stage of broadcasting the high definition broadcasts program; If be provided with broadcasting the high definition broadcasts program, on picture, demonstrate a stage that whether will be transformed into the apply for information of high definition broadcasts channel so; Be provided with according to the answer of looking the hearer, will be transformed into the high definition broadcasts channel, the some stages in the perhaps designated channel above-mentioned message.
Advantageous effect of the present invention: Digital Television of the present invention and channel automatic switching method thereof, carry out the automatic channel conversion by linkage descriptor information before, on picture, show to looking the hearer and predict the message of channel switch, after channel switch, also will on picture, show the message of announcing channel switch.So will having, it prevents from also not recognize the effect of the confusion that channel switch causes because of looking the hearer.
By the explanation of above content,, can make numerous variations and revision if the people in the industry so can know in the scope that does not break away from technological thought of the present invention.And, the content that technical scope of the present invention will can not be limited in the example to be put down in writing, but defined by the claim scope of patent.
Description of drawings
Fig. 1 is the time diagram of the general automatic transfer process of channel.
Fig. 2 is the block diagram of Digital Television structure of the present invention.
Fig. 3 is the flow chart of the channel automatic switching method of the present invention's the 1st example.
Fig. 4 is the time diagram of the automatic transfer process of channel of the present invention.
Fig. 5 is the flow chart of the channel automatic switching method of the present invention's the 2nd example.
Fig. 6 is the flow chart of the channel automatic switching method of the present invention's the 3rd example.
Fig. 7 is an instance graph of channel switch advance notice message picture.
Fig. 8 is the figure that is loaded with channel switch message after preceding picture of channel switch and the channel switch.
Fig. 9 is one and is loaded with the instance graph whether inquiry selects to be converted channel program message.
※ is to the symbol description ※ of accompanying drawing major part
21: the multichannel dispenser; 22: the segmentation filter; 23: data analysis portion; 24: database; 25: video/audio decoder; 26: memory; 27: control part; 28: the video/audio handling part; 29: display part; 30: loud speaker.
Embodiment
Below, with reference to accompanying drawing, the example of Digital Television of the present invention and channel automatic switching method thereof is described in detail.
Fig. 2 is the structured flowchart of automatically switching channel Digital Television of the present invention.As illustrated in Figure 2, via the broadcast singal that antenna (not shown among the figure) receives, be decoded into and transmit stream (TS) afterwards, received the multichannel dispenser 21 that transmits stream, with output image information, sound information, and additional information.Here, additional information will comprise a list with each program, program names, the Program Specific Information of information such as the beginning of program and the finish time.
Additional information from 21 outputs of multichannel dispenser will be input to segmentation filter 22, and obtain filtering by segmentation filter 22.Then, the output of segmentation filter 22 will be input to data analysis portion 23; Data analysis portion 23 will analyze the output of segmentation filter 22.The data (additional information that comprises Program Specific Information) that are classified by data analysis portion 23 will deposit database 24 by the form of appointment in.
In addition, image information and the sound information exported from multichannel dispenser 21 will be input to video/audio decoder 25, and obtain decoding by video/audio decoder 25.Then, the image information that reception obtains decoding and the video/audio handling part 28 of sound information with processing image information and sound information, and are exported a picture signal and an audio signal that forms picture-and-sound.Picture signal from 28 outputs of video/audio handling part will Show Picture and image by display part 29, and audio signal will form sound accompaniment and sound by loud speaker 30.
Memory 26 has been converted message (confirming channel switch message) in order to show advance notice channel automatic translation of messages (channel switch advance notice message) and announcement channel on picture, will go to store the information of relevant image information and TV action.Control part 27 will remove searching database 24, go to judge whether have linkage descriptor in the Program Specific Information that is stored in database 24; If in Program Specific Information, there is linkage descriptor, so with reference to linkage descriptor, represent the image information of message being stored in being used in the memory 26, will output to video/audio handling part 28 according to the time of having set.In addition, control part 27 goes to control multichannel dispenser 21 when carrying out channel switch, so that remove to show channel broadcasting program that linkage descriptor is specified or by looking the channel broadcasting program that the hearer selects.
Below, to the present invention, the example that promptly has the automatic switching control method of digital TV channel of this structure describes.
First example
Fig. 3 is the present invention's the 1st example, and the flow chart of the automatic switching control method of channel, Fig. 4 then are the time diagrams of the automatic transfer process of channel of the present invention.
At first, as shown in FIG. 3, in the broadcast singal that receives by antenna, select specific channel (broadcasting of single-definition) to go to specify desired program if look the hearer, for example remove to specify the ABCKIDS program, multichannel dispenser 21 is separated into image information, sound information and additional information transmitting stream (TS) so, then image information and sound information are outputed to video/audio decoder 25, additional information is outputed to segmentation filter 22.So picture signal and audio signal will output image and sound accompaniments in display part 29 and loud speaker 30 by video/audio decoder 25 and video/audio handling part 28.And be input to additional information in the segmentation filter 22, obtain will being deposited into database 24 (S31) after the classification with the form of setting.
Then, control part 27 is searching database 24, and goes to analyze and look the hearer now just at the Program Specific Information of the current channel of audiovisual, goes to judge whether to exist in Program Specific Information linkage descriptor (S32).Just finish when looking the hearer, perhaps interrupt and when becoming no signal condition, in linkage descriptor, contain an information that makes it be transformed into other channel at the broadcast program of audiovisual.And, in Program Specific Information, there is linkage descriptor, this will be about to broadcast high definition broadcasts after will meaning that a broadcast program in the current audiovisual finishes, and make channel in the current audiovisual be about to be transformed into the channel of linkage descriptor appointment.
If there is linkage descriptor in Program Specific Information, control part 27 will obtain the information (S33) relevant with exercise question with the finish time of current broadcast mid band broadcast program from Program Specific Information so.In addition, also read information by the relevant channel broadcasting program of linkage descriptor appointment from database 24.
Then, control part 27 will utilize the information finish time of the relevant current program read from Program Specific Information, go to judge the remaining time of current program, the difference of promptly going to judge current time and current program finish time whether at 5 minutes with interior (S34).This is in order to go to judge in backward 5 minutes whether can will finish channel switch.
Then, if the result (S34) that control part 27 is judged, read so after the image information that is stored in the relevant advance notice channel switch in the memory 26 remaining time of channel switch in 5 minutes, outputs to video/audio handling part 28.Then, the image information of relevant advance notice channel switch will show on display part 29, as shown in Figure 7, demonstrate and predict channel switch message, that is: " service replacement will occurto ABC FLY in 5minutes ... " (S35).
Then, through the regular hour, control part 27 will go whether the termination flag (Flag) of criterion definition program is " 1 ", so that be used for judging whether the single-definition broadcast program of current channel finishes (S36).Here, termination flag will be included in the Program Specific Information, be used for notifying related-program termination whether.For the single-definition off-the-air of judging current channel whether, the method that also has the service describing table (SDT) in a kind of Program Specific Information that can utilize current program, as shown in Figure 4, if the state of service describing table is " not running " (off-duty), be the state that does not import in the television set, so just think that relevant program finishes.
Then, look the hearer and just be terminated at the program of audiovisual if be judged as, control part 27 will be transformed into the channel (S37) by the linkage descriptor appointment so, and broadcast relevant program, for example program ABC FLY by display part 29.That is to say, be terminated, will be transformed into the broadcasting channel of the SD0 of linkage descriptor appointment so if look the SD1 broadcasting of hearer's audiovisual.
Then, control part 27 outputs to video/audio handling part 28 with reading after the image information that is stored in the relevant channel switch acknowledge message in the memory 26.Then, with the relevant image information of channel switch acknowledge message, will as shown in Figure 8, demonstrate the channel switch acknowledge message on the picture of display part 29, promptly " service replacement occurred ... ABC KIDS " (S38).
The automatic switching control method of the channel of first example is when carrying out channel switch owing to high definition broadcasts, before channel switch, allows and looks the message that the hearer learns that in advance channel is about to be converted; After channel switch, also allow and look the hearer and can remove to confirm the channel that is converted.
Second example
Fig. 5 shows the present invention's the 2nd example, the flow chart of the automatic switching control method of channel.
As shown in Figure 5, in the broadcast singal that receives by antenna, select specific channel (broadcasting of single-definition) to go to specify desired program if look the hearer, multichannel dispenser 21 is separated into image information to transport stream (TS) so, sound information and additional information, then image information and sound information are outputed to video/audio decoder 25, additional information is outputed to segmentation filter 22.Then, be input to the additional information in the segmentation filter 22, after obtaining classifying with the form of setting, will be deposited into database 24 (S51).
Then, control part 27 is searching database 24, and goes to analyze and look the hearer now just at the Program Specific Information of the current channel of audiovisual, goes to judge whether to exist in Program Specific Information linkage descriptor (S52).If in Program Specific Information, there is linkage descriptor, from Program Specific Information, obtain the information (S53) relevant with exercise question so with the finish time of current broadcast mid band broadcast program.
Then, control part 27 will utilize the information finish time of the relevant current program read from Program Specific Information, go to judge the remaining time of current program, the difference of promptly going to judge current time and current program finish time whether at 5 minutes with interior (S54).This is in order to go to judge in backward 5 minutes whether can will finish channel switch.
Then, control part (27) if the result (S54) who judges, read so after the image information that is stored in the relevant advance notice channel switch in the memory 26 remaining time of channel switch in 5 minutes, outputs to video/audio handling part 28.Then, the image information of relevant advance notice channel switch will show on display part 29, advance notice channel switch message as shown in Figure 7, that is: " service replacement will occur toABC FLY in 5minutes ... " (S55).
Then, through the regular hour, control part 27 will go whether the termination flag (Flag) of criterion definition program is " 1 ", so that be used for judging whether the single-definition broadcast program of current channel finishes (S56).For the single-definition off-the-air of judging current channel whether, the method that also has the SDT (service describing table) in a kind of Program Specific Information that can utilize current program, as shown in Figure 4, if the state of service describing table is " not running " (off-duty), be the state that does not import in the television set, so just think that relevant program finishes.
Then, look the hearer and just be terminated at the program of audiovisual if be judged as, control part 27 will be transformed into the channel (S57) by the linkage descriptor appointment so, and broadcast relevant program by display part 29.That is to say, be terminated, will be transformed into the broadcasting channel of the SD0 of linkage descriptor appointment so if look the SD1 broadcasting of hearer's audiovisual.
Then, control part 27 outputs to video/audio handling part 28 with reading after the image information that is stored in the relevant channel switch acknowledge message in the memory 26.Then, with the relevant image information of channel switch acknowledge message, will as shown in Figure 8, demonstrate the channel switch acknowledge message on the picture of display part 29, promptly " service replacement occurred ... ABC KIDS " (S58).
In order to prevent to provide the broadcasting of this no signal to looking the hearer, although be transformed into by the specified channel of linkage descriptor, but, in the channel that is switched to, there is not more program, although perhaps in the channel that is switched to, have broadcast program, but when looking the hearer and thinking the audiovisual high definition broadcasts, just should provide the high definition broadcasts program to looking the hearer.
And control part 27 goes to judge whether the channel by other is broadcasting high definition broadcasts program (S59); Then, the result of judgement (S59) will be if the high definition broadcasts of exist broadcasting will show on picture so whether one thought the message of audiovisual high definition broadcasts program (message of selection high definition broadcasts program) (S60) to looking hearer's inquiry.At this moment, in order on picture, to represent message, control part 27 will go to read the image information that is stored in the relevant selection high definition broadcasts program information in the memory 26, demonstrates the message of selection high definition broadcasts program as shown in Figure 9 then by display part 29.Then, with selecting the high definition broadcasts program information together, look the hearer and can remove to select program, will on picture, show " YES " and " NO " button in order to allow.
Then, control part 27 will go to judge whether look the hearer has selected high definition broadcasts program (S61).Utilize the input medium of remote controller etc. to select " YES " button if look the hearer, control part 27 will be judged as and select the high definition broadcasts program so, and after converting the high definition broadcasts channel to, will demonstrate relevant program (S62) on picture.In contrast, selected " NO " button if look the hearer, control part 27 will be judged as and select the high definition broadcasts program so, will demonstrate on picture by the channel program that connects the descriptor appointment.
The 3rd example
Fig. 6 shows it is the present invention's the 3rd example, the flow chart of the automatic switching control method of channel.
As shown in Figure 6, in the broadcast singal that receives by antenna, select specific channel (broadcasting of single-definition) to go to specify desired program if look the hearer, multichannel dispenser 21 is separated into image information to transport stream (TS) so, sound information and additional information, then image information and sound information are outputed to video/audio decoder 25, additional information is outputed to segmentation filter 22.Then, be input to the additional information in the segmentation filter 22, after obtaining classifying with the form of setting, will be deposited into database 24 (S51).
Then, control part 27 is searching database 24, and goes to analyze and look the hearer now just at the Program Specific Information of the current channel of audiovisual, goes to judge whether to exist in Program Specific Information linkage descriptor (S52).If in Program Specific Information, there is linkage descriptor, from Program Specific Information, obtain the information (S53) relevant with exercise question so with the finish time of current broadcast mid band broadcast program.
Then, control part 27 will utilize the information finish time of the relevant current program read from Program Specific Information, go to judge the remaining time of current program, the difference of promptly going to judge current time and current program finish time whether at 5 minutes with interior (S54).This is in order to go to judge in backward 5 minutes whether can will finish channel switch.
Then, if the result (S54) that control part 27 is judged, read so after the image information that is stored in the relevant advance notice channel switch in the memory 26 remaining time of channel switch in 5 minutes, outputs to video/audio handling part 28.Then, the image information of relevant advance notice channel switch will demonstrate advance notice channel switch message as shown in Figure 7 on display part 29, that is: " service replacement will occur toABC FLY in 5minutes ... " (S55).
Then, through the regular hour, control part 27 will go whether the termination flag (Flag) of criterion definition program is " 1 ", so that be used for judging whether the single-definition broadcast program of current channel finishes (S56).For the single-definition off-the-air of judging current channel whether, the method that also has the service describing table (SDT) in a kind of Program Specific Information that can utilize current program, as shown in Figure 4, if the state of service describing table is " not running " (off-duty), be the state that does not import in the television set, so just think that relevant program finishes.
Then, look the hearer and just be terminated at the program of audiovisual if be judged as, control part 27 will be transformed into the channel (S57) by the linkage descriptor appointment so, and broadcast relevant program by display part 29.That is to say, be terminated, will be transformed into the broadcasting channel of the SD0 of linkage descriptor appointment so if look the SD1 broadcasting of hearer's audiovisual.
Then, control part 27 outputs to video/audio handling part 28 with reading after the image information that is stored in the relevant channel switch acknowledge message in the memory 26.Then, with the relevant image information of channel switch acknowledge message, will as shown in Figure 8, demonstrate the channel switch acknowledge message on the picture of display part 29, promptly " service replacement occurred ... ABC KIDS " (S58).
In order to prevent to provide the broadcasting of this no signal to looking the hearer, although be transformed into by the specified channel of linkage descriptor, but, in the channel that is switched to, there is not more program, although perhaps in the channel that is switched to, have broadcast program, but when looking the hearer and thinking the audiovisual high definition broadcasts, just should provide the high definition broadcasts program to looking the hearer.
And control part 27 goes to judge whether the channel by other is broadcasting high definition broadcasts program (S59); Then, the result of judgement (S59) will be if the high definition broadcasts of exist broadcasting will show on picture so whether one thought the message of audiovisual high definition broadcasts program (message of selection high definition broadcasts program) (S60) to looking hearer's inquiry.At this moment, in order on picture, to represent message, control part 27 will go to read the image information that is stored in the relevant selection high definition broadcasts program information in the memory 26, demonstrates the message of selection high definition broadcasts program as shown in Figure 9 then by display part 29.Then, with selecting the high definition broadcasts program information together, look the hearer and can remove to select program, will on picture, show " YES " and " NO " button in order to allow.
Then, control part 27 will go to judge whether look the hearer has selected high definition broadcasts program (S61).Utilize the input medium of remote controller etc. to select " YES " button if look the hearer, control part 27 will be judged as and select the high definition broadcasts program so, and after converting the high definition broadcasts channel to, will demonstrate relevant program (S62) on picture.In contrast, selected " NO " button if look the hearer, control part 27 will remove to confirm to comprise the list with each program so, program names, and the Program Specific Information of information such as the beginning of program and the finish time is in interior additional information.Then, control part 27 will be on picture the display program specific information, perhaps remove display program choice menus (S63).At this moment, be presented at that Program Specific Information on the picture can also comprise the relevant program that has finished with the program choice menus and the content of the program nipped off midway.Then, look the hearer will go to select channel or program (S64, S65).
Remove to select specific program if look the hearer in the program choice menus, perhaps want to be transformed into other channel in manual mode, control part 27 will not done to allow and look the action that the hearer removes to select program and channel so.If do not remove to select program and channel but look the hearer, control part 27 will remove to select specific program so, for example by linkage descriptor specified channel and broadcast program, and be shown.
Claims (18)
1, a kind of Digital Television is characterized in that being made of following structure:
Be provided with a contrary multipath conversion portion, it will receive by looking the channel broadcasting signal that the hearer selects, then with output image information, and sound information, and additional information;
Be provided with a video/audio decoder, it will be decoded to image information and sound information;
Be provided with a video/audio handling part, it will receive the output signal by video/audio decoder, and the picture signal and the audio signal of output formation picture-and-sound respectively;
Be provided with a data analysis portion, it will go to analyze the additional information by the output of contrary multipath conversion portion;
Be provided with a database, it will be stored from the additional information of data analysis portion output;
Be provided with a memory, it is predicted channel switch message with storage representation and uses image information and expression to confirm the image information that channel switch message is used;
Be provided with a control part, if in depositing the additional information of database in, have link identifiers, so in time of each setting, this control part will be to video/audio handling part output expression advance notice channel switch message image information, confirm the image information that channel switch message is used with expression, if start broadcasting high definition broadcasts, its can be from looking channel switch that the hearer selects to appointed channel so.
2, Digital Television according to claim 1 is characterized in that above-mentioned control part before the high definition broadcasts that starts broadcasting, and predicted the image information that message is used to the conversion of video/audio handling part output indicated channel.
3, Digital Television according to claim 1 is characterized in that above-mentioned control part after the high definition broadcasts that starts broadcasting, and changes the image information that acknowledge message is used to video/audio handling part output indicated channel.
4, the channel automatic switching method of Digital Television is characterized in that being made of the following stage:
Be provided with looking the hearer just in the channel broadcasting signal in audiovisual, go to judge whether to contain the stage of announcement channel switch information;
In broadcast singal, contain announcement channel switch information if be provided with, before finishing channel broadcasting, will on picture, show the stage of advance notice channel switch message so;
Look the just end of the channel broadcasting in audiovisual of hearer if be provided with, perhaps interrupt, so just go to be transformed into the stage of other channel;
Be provided with the stage of indicated channel conversion acknowledge message on picture.
5, the channel automatic switching method of Digital Television according to claim 4 is characterized in that the announcement channel switch information in the above-mentioned announcement channel switch information phase is a linkage descriptor.
6, the channel automatic switching method of Digital Television according to claim 4 is characterized in that perhaps interrupting if the channel broadcasting just in audiovisual finishes, and announces the channel that channel switch information will be transformed into appointment so.
7, a kind of Digital Television is characterized in that it being to be made of following structure:
Be provided with a contrary multipath conversion portion, it will receive by looking the channel broadcasting signal that the hearer selects, then with output image information, and sound information, and additional information;
Be provided with a video/audio decoder, it will be decoded to image information and sound information;
Be provided with a video/audio handling part, it will receive the output signal by video/audio decoder, and the picture signal and the audio signal of output formation picture-and-sound respectively;
Be provided with a data analysis portion, it will go to analyze the additional information by the output of contrary multipath conversion portion;
Be provided with a database, it will be stored from the additional information of data analysis portion output;
Be provided with a memory, it is predicted channel switch message with storage representation and uses image information and expression to confirm the image information that channel switch message is used;
Be provided with a control part, this control part will go to judge in the channel broadcasting signal in looking hearer's audiovisual whether contain the information of announcing channel switch, if contain the information of informing channel switch in broadcast singal, it will remove to generate advance notice channel switch signal so;
Also be provided with a display part, it wanted the message of converted channel to looking hearer's announcement before channel switch.
8, Digital Television according to claim 7 is characterized in that above-mentioned control part will go to judge to look just channel program type and the program title in audiovisual of hearer.
9, Digital Television according to claim 7 is characterized in that above-mentioned control part will go to seek other channel consistent with program category, and by controlling transitions to this channel.
10, Digital Television according to claim 7 is characterized in that above-mentioned control part will go to seek other channel consistent with program title, and by controlling transitions to this channel.
11, the channel automatic switching method of Digital Television is characterized in that being made of the following stage:
Be provided with in the broadcast program additional information of looking hearer's selection, go to judge whether to contain the stage of announcement channel switch information;
In additional information, contain announcement channel switch information if be provided with, will go to confirm the stage of the remaining time of broadcast program so;
Be provided with the stage of indicated channel conversion advance notice message on picture;
Be provided with the stage of judging that whether broadcast program finishes;
Finish if be provided with broadcast program, so just go to be transformed into the stage of specified channel;
Be provided with the stage of indicated channel conversion acknowledge message on picture;
In the stage of the remaining time of confirming broadcast program, obtain the remaining time of broadcast program by the difference of the broadcast program finish time that obtains from additional information and current time.
12, the channel automatic switching method of Digital Television according to claim 11, it is characterized in that in the stage of indicated channel conversion schedule information on picture, if the remaining time of broadcast program, so just indicated channel was changed schedule information on picture in 5 minutes.
13, the channel automatic switching method of Digital Television according to claim 11 is characterized in that in the judgement stage whether broadcast program finishes, if termination flag is " 1 ", will be judged as broadcast program so and finished.
14, the channel automatic switching method of Digital Television according to claim 11 is characterized in that in the judgement stage that whether finishes at broadcast program, if the state of service describing table is " off-duty ", so just thought that relevant program finishes.
15, the channel automatic switching method of Digital Television according to claim 11 if it is characterized in that finishing at broadcast program, is announced the information of channel switch so, will be transformed into a specified channel.
16, the channel automatic switching method of Digital Television according to claim 11 is characterized in that the information in the announcement channel switch is linkage descriptor.
17, the channel automatic switching method of Digital Television according to claim 11 is characterized in that also comprising the following stage:
Be provided with on picture and after the indicated channel conversion acknowledge message, whether go to judge on other channel in the stage of broadcasting the high definition broadcasts program;
If be provided with broadcasting the high definition broadcasts program, on picture, demonstrate a stage that whether will be transformed into the apply for information of high definition broadcasts channel so;
Be provided with according to the answer of looking the hearer, will be transformed into the high definition broadcasts channel, the some stages in the perhaps designated channel above-mentioned message.
18, the channel automatic switching method of Digital Television according to claim 17 is characterized in that also comprising the following stage:
Be provided with when looking the hearer and do not go to select the high definition broadcasts channel, will go the stage of display program choice menus;
Be provided with the stage of from the program choice menus, selecting channel;
Be provided with the stage that is transformed into selected channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100206049A CN100348019C (en) | 2004-05-25 | 2004-05-25 | Digital television and automatic switching method between channels |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100206049A CN100348019C (en) | 2004-05-25 | 2004-05-25 | Digital television and automatic switching method between channels |
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| Publication Number | Publication Date |
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| CN1705352A CN1705352A (en) | 2005-12-07 |
| CN100348019C true CN100348019C (en) | 2007-11-07 |
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| CNB2004100206049A Expired - Fee Related CN100348019C (en) | 2004-05-25 | 2004-05-25 | Digital television and automatic switching method between channels |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2047683A2 (en) * | 2006-07-28 | 2009-04-15 | Thomson Research Funding Corporation | Method and apparatus for fast channel change for digital video |
| CN102413293B (en) * | 2010-09-21 | 2013-11-20 | 深圳Tcl新技术有限公司 | System and method for automatically linking high-definition programs |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001086480A (en) * | 1999-09-17 | 2001-03-30 | Dainippon Printing Co Ltd | Channel auto switch system |
| CN1471003A (en) * | 2002-07-25 | 2004-01-28 | 联想(北京)有限公司 | Method for auto-switching play channel based on time table |
-
2004
- 2004-05-25 CN CNB2004100206049A patent/CN100348019C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001086480A (en) * | 1999-09-17 | 2001-03-30 | Dainippon Printing Co Ltd | Channel auto switch system |
| CN1471003A (en) * | 2002-07-25 | 2004-01-28 | 联想(北京)有限公司 | Method for auto-switching play channel based on time table |
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| Publication number | Publication date |
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| CN1705352A (en) | 2005-12-07 |
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