CN102404527A - Display method and terminal for digital television program - Google Patents
Display method and terminal for digital television program Download PDFInfo
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- CN102404527A CN102404527A CN2011104209192A CN201110420919A CN102404527A CN 102404527 A CN102404527 A CN 102404527A CN 2011104209192 A CN2011104209192 A CN 2011104209192A CN 201110420919 A CN201110420919 A CN 201110420919A CN 102404527 A CN102404527 A CN 102404527A
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Abstract
The invention relates to a display method and a terminal for digital television programs. The method comprises that the terminal receives television signals outputted from at least one tuner, processes the television signals, decodes and displays the processed video stream containing at least two channels of program streams through at least one Graphic layer channel. The invention actively displays the video signals from every channel which is obtained by processing the television signals outputted from at least one tuner through the Graphic layer channel, or carries out mixed display through a Video layer channel and the Graphic layer channel, thus users can simultaneously browse active images of a plurality of television channels and quickly find their favorite programs. Besides, users can search for their favorite programs through switching channels, therefore time used for searching for programs is reduced, and market competitiveness of the product is improved.
Description
Technical field
The present invention relates to the digital television techniques field, relate in particular to a kind of digital television program display packing and terminal.
Background technology
At present, in DTV, the number of digital TV channel (Service) is very many, and it is innumerable especially to be distributed in these channels the TV programme of different periods.In these numerous TV programme, the user likes each TV programme, so the user need change the platform filtered search through what do not stop, to seek the TV programme of oneself liking relatively.
To the problems referred to above, the method for each television manufacturer employing has at present: design preferences channel list (FAV), perhaps design electronic program guides (EPG, Electronic Program Guide) and program booking (BOOKING) etc.But above-mentioned solution still can't satisfy the selection demand of user to program, and for the mode of favorite channels tabulation, the user still need change platform to seek the program of oneself liking through what do not stop; For the EPG mode because EPG operation slowly, and consumer wants do not stop read over its recommended information, with its reservation, in practical application, the consumer seldom uses to judge whether to like.
In addition, prior art also has and adopts many pictures PIP to show not method on the same stage, still; In this method, main, sprite all shows through Video (video) passage, has only the sub-picture can activity in a plurality of sprites; Other sprites are inactive state, and when changing platform, system can only switch one by one each sprite and browses; Make the user can't find the program of oneself liking fast, and therefore waste user time.
Summary of the invention
Main purpose of the present invention is to provide a kind of digital television program display packing and terminal, shows when being intended to realize TV multichannel moving frame, reduces the time of user search favor program.
In order to achieve the above object, the present invention proposes a kind of digital television program display packing, comprising:
Display terminal receives the TV signal of at least one tuner output;
Said TV signal is handled;
Comprise at least with what processing obtained that the video flowing of two-way program stream carries out decoding and displaying through at least one Graphic layer passage.
Preferably, saidly TV signal carried out processed steps comprise:
Said TV signal is carried out tuning decoding and demultiplexing processing, and the video flowing of two-way program stream at least that comprises of scramble information is with in output.
Preferably, saidly TV signal carried out processed steps further comprise:
Said TV signal is divided into two-way at least;
Each road TV signal is carried out tuning decoding and demultiplexing respectively to be handled;
The video flowing of two-way program stream at least that comprises of scramble information is with in output.
Preferably, saidly comprise at least with what processing obtained that the video flowing of two-way program stream comprises through the step that at least one Graphic layer passage carries out decoding and displaying:
Comprise at least with what processing obtained that the video flowing of two-way program stream carries out decoding and displaying through Graphic layer passage, perhaps carry out mixed display behind the corresponding decoding through Video layer passage and Graphic layer passage.
Preferably, the video flowing that comprises two-way program stream at least that processing is obtained carries out through Video layer passage and Graphic layer passage that the step of mixed display comprises behind the corresponding decoding:
Through smart card said video flowing is carried out descrambling and filtration treatment, obtain two-way audio/video flow at least;
The audio/video flow that each channel is corresponding carries out corresponding decoding at Video layer passage and Graphic layer passage, and generates corresponding video data at screen buffer;
Transfer to the Video layer after video data in the Video layer passage shown processing; Transfer to the Graphic layer after video data in the Graphic layer passage shown processing;
Export said display terminal to after the data of said Video layer and said Graphic layer are mixed.
Preferably, saidly through smart card said video flowing is carried out descrambling and filtration treatment, the step that obtains the said audio/video flow of two-way at least comprises:
Obtain the information flow of the corresponding channel of each program stream in the said video flowing through smart card;
According to Entitlement Management Message in the said information flow and Entitlement Control Message output program control word information CW;
According to said program control word information CW descrambling and filter out the audio/video flow of the no scramble information of corresponding channel from said video flowing.
Preferably, saidly comprise at least with what processing obtained that the video flowing of two-way program stream comprises through the step that Graphic layer passage carries out decoding and displaying:
Through smart card said video flowing is carried out descrambling and filtration treatment, obtain two-way audio/video flow at least;
The audio/video flow that each channel is corresponding carries out corresponding decoding at Graphic layer passage, and generates corresponding video data at screen buffer;
Transfer to the Graphic layer after video data in the Graphic layer passage shown processing;
Export the data of said Graphic layer to said display terminal.
Preferably, said video data in the Graphic layer passage is shown that the step that transfers to the Graphic layer after the processing comprises:
From screen buffer, catch the video data in the Graphic layer passage, and copy it to predetermined DFB data buffer zone;
Video data decoding in the said DFB data buffer zone is handled to preset DFB surface;
Data among the said DFB surface are attached to the presumptive area of the graphical interfaces of Graphic layer with the picture form.
Preferably, the corresponding picture that shows two or more channels of said Graphic layer passage; The corresponding picture that shows at least one channel of said Video layer passage.
Preferably, this method also comprises:
Receive user's channel switching instruction;
According to said channel switching instruction, the picture that the user is chosen shows through Graphic layer passage or Video layer passage.
The present invention also proposes a kind of digital television program display terminal, comprising:
Receiver module is used to receive the TV signal that at least one tuner is exported;
Processing module is used for said TV signal is handled;
Display module is used for comprising at least with what processing obtained that the video flowing of two-way program stream carries out decoding and displaying through at least one Graphic layer passage.
Preferably, said processing module comprises:
Tuning decoding unit is used for said TV signal is carried out tuning decoding;
Demultiplexing unit is used for that tuning decoded TV signal is carried out demultiplexing and handles, and the video flowing of two-way program stream at least that comprises of scramble information is with in output.
Preferably, said display module comprises:
The descrambling filter element is used for through smart card said video flowing being carried out descrambling and filtration treatment, obtains the audio/video flow of the said program stream of two-way at least;
The mpeg decode unit is used for the audio/video flow that each channel is corresponding and carries out corresponding decoding at Video layer passage and Graphic layer passage, and generates corresponding video data at screen buffer;
Display processing unit is used for transferring to the Video layer after video data with Video layer passage shows processing; Transfer to the Graphic layer after video data in the Graphic layer passage shown processing;
Show output unit, export said display terminal to after being used for the data of said Video layer and said Graphic layer are mixed.
Preferably, said descrambling filter element also is used for obtaining through smart card the information flow of the corresponding channel of each program stream of said video flowing; According to Entitlement Management Message in the said information flow and Entitlement Control Message output program control word information CW; And according to said program control word information CW descrambling and filter out the audio/video flow of the no scramble information of corresponding channel from said video flowing.
Preferably, said mpeg decode unit also is used for the audio/video flow that each channel is corresponding and carries out corresponding decoding at Graphic layer passage, and generates corresponding video data at screen buffer;
Said display processing unit also is used for transferring to the Graphic layer after video data with Graphic layer passage shows processing;
Said demonstration transmission unit also is used for exporting the data of said Graphic layer to said display terminal.
Preferably, said display processing unit also is used for catching the video data the Graphic layer passage from screen buffer, and copies it to predetermined DFB data buffer zone; Video data decoding in the said DFB data buffer zone is handled to preset DFB surface; Data among the said DFB surface are attached to the presumptive area of the graphical interfaces of Graphic layer with the picture form.
Preferably, said display module also is used to receive user's channel switching instruction; According to said channel switching instruction, the picture that the user is chosen shows through Graphic layer passage or Video layer passage.
A kind of digital television program display packing and terminal that the present invention proposes; Can realize the processing of the TV signal of at least one tuner output; Make the vision signal of handling each channel that obtains carry out activity and show that perhaps carry out mixed display through Video layer passage and Graphic layer passage, the user is when watch programs through Graphic layer passage; Can browse the moving frame of a plurality of television channels simultaneously, and find the TV programme of oneself liking fast; In addition, the user also can reduce the time of user's search programs, and improve the competitiveness of product in market through changing the program that the platform search is liked oneself thus.
Description of drawings
Fig. 1 is the schematic flow sheet of digital television program display packing first embodiment of the present invention;
To be the video flowing that comprises two-way program stream at least that among digital television program display packing first embodiment of the present invention processing obtained carry out the schematic flow sheet of mixed display behind the corresponding decoding through Video layer passage and Graphic layer passage to Fig. 2;
Fig. 3 carries out descrambling and filtration treatment through smart card to video flowing among digital television program display packing first embodiment of the present invention, obtains the schematic flow sheet of the audio/video flow of two-way program stream at least;
Fig. 4 comprises the video flowing of two-way program stream at least carries out decoding and displaying through Graphic layer passage schematic flow sheet with what processing obtained among digital television program display packing first embodiment of the present invention;
Fig. 5 is the schematic flow sheet of digital television program display packing second embodiment of the present invention;
Fig. 6 is the structural representation of digital television program display terminal of the present invention preferred embodiment;
Fig. 7 is the structural representation of processing module in the digital television program display terminal of the present invention preferred embodiment;
Fig. 8 is the structural representation of display module in the digital television program display terminal of the present invention preferred embodiment.
In order to make technical scheme of the present invention clearer, clear, will combine accompanying drawing to do further to detail below.
Embodiment
The solution of the embodiment of the invention mainly is: the TV signal to one or more tuner output is handled; And the vision signal of each channel that processing is obtained is carried out activity through Graphic layer passage and is shown; Perhaps carry out mixed display through Video layer passage and Graphic layer passage; Show when realizing the moving frame of a plurality of television channels, make things convenient for the user to search for the TV programme of oneself liking fast, reduce the time of user's search programs.
Display terminal can have the terminal of digital video signal Presentation Function for digital TV terminal or other among the present invention, below each embodiment be that example describes with the DTV.
As shown in Figure 1, first embodiment of the invention proposes a kind of digital television program display packing, comprising:
Step S101, display terminal receive the TV signal of at least one tuner output;
The present invention can realize the picture of a plurality of channels in the TV signal of one or more tuner outputs is shown that simultaneously this demonstration can show through the Graphic layer, also can pass through Video layer and Graphic layer mixed display.
Present embodiment receives the TV signal of two tuners outputs with digital TV terminal and carries out the multichannel moving frame and is shown as example and describes.
Wherein, the TV signal of two tuner outputs is set respectively and is shown by Video layer corresponding display channel (being the alleged Video layer of present embodiment passage) and the corresponding display channel (being the alleged Graphic layer of present embodiment passage) of Graphic layer.The video frequency program that can comprise a plurality of channels in the respectively corresponding physics frequency of each tuner, physics frequency.
At first, outside high-frequency digital TV signal accesses to digital television system through two tuners, and tuner carries out frequency-selecting and down-converted to high-frequency TV signal, exports digital TV terminal to after high-frequency TV signal is become medium-frequency TV signal.
Step S102 handles TV signal;
Wherein, the medium-frequency TV signal of tuner being exported is handled specifically and comprised: TV signal is carried out tuning decoding and demultiplexing processing, and the video flowing of two-way program stream at least that comprises of scramble information is with in output.
Particularly; The TV signal of two tuner outputs is carried out tuning decoding and demultiplexing respectively to be handled; Wherein, It is that the program stream in the tuning decoded TV signal is separated with information flow that demultiplexing is handled, so that follow-up digital TV terminal can carry out scramble process according to the information flow in this TV signal.
After tuning decoding and demultiplexing processing, the video flowing of output band scramble information.
Can be divided into multiple signals for the TV signal of each tuner output carries out tuning decoding and demultiplexing respectively and handles.
Therefore, the video flowing of all exportable at least one road band scramble information after the TV signal tuning decoding of process of each tuner output and demultiplexing are handled, a television channel in the corresponding current frequency of the video flowing of each road band scramble information.
Step S103 comprises at least with what processing obtained that the video flowing of two-way program stream carries out decoding and displaying through at least one Graphic layer passage.
As previously mentioned, present embodiment can be realized the picture of a plurality of channels in the TV signal of one or more tuner outputs is shown that simultaneously this demonstration can show through the Graphic layer, also can pass through Video layer and Graphic layer mixed display.
Present embodiment carries out many pictures to the TV signal of two tuners outputs respectively with Video layer passage and Graphic layer passage and is shown as example and describes; In this kind application scenarios; Video layer passage passes through the Video layer and shows also flowing through tuning decoding and demultiplexing processed video of a tuner output, and Graphic layer passage shows that another tuner is exported through the Graphic layer and tuning decoding of process and demultiplexing processed video stream.
Consider the system hardware cost; Present embodiment is set the video flowing that Video layer passage shows one road band scramble information; Graphic layer passage shows the video flowing of multichannel band scramble information; And the picture of setting Video layer passage channel displayed simultaneously is key frame, and the picture of a plurality of channels that Graphic layer passage shows corresponds to sprite.
Wherein, the process that the TV signal of respectively two tuners being exported through Video layer passage and Graphic layer passage is carried out many pictures mixed display is:
At first each road video flowing is carried out descrambling and filtration treatment respectively through smart card; Specifically obtain the information flow of corresponding channel in the video flowing through smart card; According to Entitlement Management Message in the information flow and Entitlement Control Message output program control word information CW, then according to program control word information CW descrambling and filter out the audio/video flow of the no scramble information of corresponding channel from video flowing.
The audio/video flow that each channel is corresponding carries out corresponding decoding at Video layer passage and Graphic layer passage, and generates corresponding video data at screen buffer.
Then, transfer to the Video layer after the video data in the Video layer passage shown processing, transfer to the Graphic layer after the video data in the Graphic layer passage is shown processing.
Wherein, the video data in the Video layer passage is shown that the process that transfers to the Video layer after the processing is: after the video data in the Video layer passage is handled through common video such as Scaler, Deinterlace, export the Video layer to.
Video data in the Graphic layer passage is shown that the process that transfers to the Graphic layer after the processing is: from screen buffer, catch the video data in the Graphic layer passage, and copy it to predetermined DFB data buffer zone; Then, the video data decoding in the DFB data buffer zone is handled to preset DFB surface; Afterwards the data among the DFB surface are attached to the presumptive area of the graphical interfaces of Graphic layer with the picture form.Repeat said process, a plurality of sprites are shown to the appointed area of Graphic layer respectively.
At last; Export digital TV terminal to after the data of Video layer and Graphic layer are mixed; Thus, the key frame of Video layer demonstration and each sprite of Graphic layer demonstration are simultaneously displayed on the digital TV terminal, the user can browse a plurality of moving frames simultaneously on the digital TV terminal screen; And can obtain its favorite program easily, thereby saved program searching time for users.
In the present embodiment; Because the Video layer is limited by video processing modules such as the Scaler, Deinterlace of digital television system; The Video layer passage that one cover is made up of video processing modules such as above-mentioned Scaler, Deinterlace can only be handled a video pictures, can be more than 24 or 24 by the frame per second that refreshes of the picture of this Video layer passage processing; For the Graphic layer, the user can mark off a plurality of little window areas in the image display area of same Graphic layer, and in these wicket zones, fills in literal or picture is put in subsides.
Digital television system does not stop to catch the video content of these wicket area relative television channels, and these video contents are pasted the window that is put into correspondence, thereby forms movable sprite of a plurality of whiles.
Need to prove, these sprites to refresh frame per second lower than the picture refreshing rate of Video layer, but as long as the refresh rate per second of each sprite reaches more than 6 frames, then can satisfy user's the demand of browsing basically.Wherein, the height of refresh rate depends on the handling property of system CPU.In the present embodiment,, key frame is shown through the Video layer for guaranteeing good display; Sprite all shows through the Graphic layer; In other embodiments, also can be that certain sub-picture only shows with the Video layer, and other pictures use the Graphic layer to show.
In the practical implementation process, as shown in Figure 2, among the above-mentioned steps S103, the video flowing that comprises two-way program stream at least that processing is obtained carries out through Video layer passage and Graphic layer passage that the step of mixed display comprises behind the corresponding decoding:
Step S1031 carries out descrambling and filtration treatment through smart card to video flowing, obtains the audio/video flow of two-way program stream at least;
Step S1032, the audio/video flow that each channel is corresponding carries out corresponding decoding at Video layer passage and Graphic layer passage, and generates corresponding video data at screen buffer;
Step S1033 transfers to the Video layer after the video data in the Video layer passage shown processing; Transfer to the Graphic layer after video data in the Graphic layer passage shown processing;
Step S1034 exports display terminal to after the data of Video layer and Graphic layer are mixed.
As shown in Figure 3, above-mentioned steps S1031 comprises:
Step S10311 obtains in the video flowing information flow of the corresponding channel of each program stream through smart card;
Step S10312 is according to Entitlement Management Message in the information flow and Entitlement Control Message output program control word information CW;
Step S10313 is according to program control word information CW descrambling and filter out the audio/video flow of the no scramble information of corresponding channel from video flowing.
As shown in Figure 4, among the above-mentioned steps S103, comprise at least with what processing obtained that the video flowing of two-way program stream comprises through the step that Graphic layer passage carries out decoding and displaying:
Step S1035 carries out descrambling and filtration treatment through smart card to video flowing, obtains the audio/video flow of two-way program stream at least;
Step S1036, the audio/video flow that each channel is corresponding carries out corresponding decoding at Graphic layer passage, and generates corresponding video data at screen buffer;
Step S1037 transfers to the Graphic layer after the video data in the Graphic layer passage shown processing;
Step S1038 exports the data of Graphic layer to display terminal.
Need to prove that each picture can the simultaneously movable different TV programme of demonstration in the present embodiment, key frame can be arranged on the centre of display terminal screen, also can be arranged on the limit of display terminal screen or on the angle.The size of key frame can be bigger than sprite, also can be the same with sprite big, and can also be littler than sprite.
In addition, the TV programme that sprite is corresponding can be updated to other TV programme by system's timing automatic, also can not be that timing automatic is upgraded, but be set at the state of keeping watch on certain program or certain several program by the user.Each TV programme that above-mentioned sprite shows must be in the same physics frequency; If the TV programme of the TV programme of certain sprite and other sprites are not at same physics frequency; Then the TV programme of this sprite must be in same frequency with key frame, otherwise this sprite possibly can't show.
In addition, the TV signal of two tuner outputs also can all be carried out decoding and displaying through Graphic layer passage, and the processing procedure of this kind application scenarios repeats no more at this with the processing procedure of above-mentioned Graphic layer passage to TV signal.In addition, also can show two or more channel pictures as required in the Video layer, such as, in a plurality of video pictures, also can be presented at the Video layer by one or two video pictures, and other video pictures is presented at the Graphic layer.
The quantity of tuner also can be for more than two, and the TV signal of each tuner output can correspondingly be shown by Graphic layer or Video layer, perhaps through Graphic layer and Video layer mixed display.
Present embodiment makes full use of the large-screen of current panel TV, and under the situation of user's normal viewing TV programme, the user can browse the moving frame of a plurality of television channels simultaneously, under the prerequisite that need not change platform, can find the TV programme of oneself liking fast; Simultaneously, the user also can pay close attention to other content of TV program synchronously.Thus, for the user watches TV programme convenience is provided.
As shown in Figure 5, second embodiment of the invention proposes a kind of digital television program display packing, on the basis of above-mentioned first embodiment, after step S103, also comprises:
Step S104, reception user's channel switching instruction;
Step S105, according to channel switching instruction, the picture that the user is chosen shows through Graphic layer passage or Video layer passage.
The difference of present embodiment and the foregoing description is; Present embodiment is being realized through Graphic layer passage and Video layer passage under the movable simultaneously situation about showing of a plurality of channel pictures; Can also carry out the switching of channel according to user instruction; This switching can also can be that the channel between the different physics frequencies switches for switching between each sprite in the same physics frequency.
For switching between each sprite in the same physics frequency; Behind the selected a certain physics frequency of user; Select the channel program oneself liked in can be on the digital TV terminal screen numerous video pictures of user; If the user chooses wherein some pictures, then the picture that can the user be selected of digital TV terminal is displayed in full screen through the Graphic layer of Graphic layer passage, and the picture that also can the user be selected is displayed in full screen through the Video layer of Video layer passage.
Switch for the channel between the different physics frequencies; Carrying out mixed display with Graphic layer and Video layer among above-mentioned first embodiment is example; The Video layer shows key frame, and the Graphic layer shows a plurality of sprites, when the user need select one of them sprite to be key frame in a plurality of sprites that the Graphic layer shows; The numeral display terminal can switch to the sprite that the user chooses the Video layer and be displayed in full screen, and also can directly be displayed in full screen at the Graphic of current physics frequency layer.
As for the channel picture that switches being shown in the Graphic layer or in the Video layer, showing, can set according to user's needs in advance by system.
The video content of each television channel in above-mentioned each physics frequency can all be presented on the Graphic layer; Certain television channel in each physics frequency also can be presented on the Video layer.
Present embodiment utilizes a physics frequency of DTV that the characteristics of a plurality of TV programme can be arranged; Behind each replacing physics frequency; All be presented at whole TV programme of this physics frequency on the video screen; Make the user change the video content that platform once can be seen a plurality of channels, do further selection after watching for user real time, this kind channel switching method has been accelerated the speed of the TV programme that user search oneself likes greatly; Provide users with the convenient, also improved the competitiveness of product in market simultaneously greatly.
As shown in Figure 6, preferred embodiment of the present invention proposes a kind of digital television program display terminal, comprising: receiver module 601, processing module 602 and display module 603, wherein:
Receiver module 601 is used to receive the TV signal that at least one tuner is exported;
The present invention can realize the picture of a plurality of channels in the TV signal of one or more tuner outputs is shown that simultaneously this demonstration can show through the Graphic layer, also can pass through Video layer and Graphic layer mixed display.
Present embodiment receives the TV signal of two tuners outputs with digital TV terminal and carries out the multichannel moving frame and is shown as example and describes.
Wherein, the TV signal of two tuner outputs is set respectively and is shown by Video layer corresponding display channel (being the alleged Video layer of present embodiment passage) and the corresponding display channel (being the alleged Graphic layer of present embodiment passage) of Graphic layer.The video frequency program that can comprise a plurality of channels in the respectively corresponding physics frequency of each tuner, physics frequency.
At first; Outside high-frequency digital TV signal accesses to digital TV terminal through two tuners; Tuner carries out frequency-selecting and down-converted to high-frequency TV signal; Export digital TV terminal to after high-frequency TV signal become medium-frequency TV signal, digital TV terminal receives the TV signal of each tuners output through receiver module 601.
Handled by the medium-frequency TV signal of 602 pairs of tuner outputs of processing module then, its concrete processing procedure is: TV signal is carried out tuning decoding and demultiplexing processing, and the video flowing of two-way program stream at least that comprises of scramble information is with in output.
Particularly; The TV signal of two tuner outputs is carried out tuning decoding and demultiplexing respectively to be handled; Wherein, It is that the program stream in the tuning decoded TV signal is separated with information flow that demultiplexing is handled, so that follow-up digital TV terminal can carry out scramble process according to the information flow in this TV signal.
After tuning decoding and demultiplexing processing, the video flowing of output band scramble information.
Can be divided into multiple signals for the TV signal of each tuner output carries out tuning decoding and demultiplexing respectively and handles.
Therefore, the video flowing of all exportable at least one road band scramble information after the TV signal tuning decoding of process of each tuner output and demultiplexing are handled, a television channel in the corresponding current frequency of the video flowing of each road band scramble information.
Then by display module 603 with processing module 602 handle obtain comprise at least that the video flowing of two-way program stream carries out decoding and displaying through at least one Graphic layer passage.
As previously mentioned, present embodiment can be realized the picture of a plurality of channels in the TV signal of one or more tuner outputs is shown that simultaneously this demonstration can show through the Graphic layer, also can pass through Video layer and Graphic layer mixed display.
Present embodiment carries out many pictures to the TV signal of two tuners outputs respectively with Video layer passage and Graphic layer passage and is shown as example and describes; In this kind application scenarios; Video layer passage passes through the Video layer and shows also flowing through tuning decoding and demultiplexing processed video of a tuner output, and Graphic layer passage shows that another tuner is exported through the Graphic layer and tuning decoding of process and demultiplexing processed video stream.
Consider the system hardware cost; Present embodiment is set the video flowing that Video layer passage shows one road band scramble information; Graphic layer passage shows the video flowing of multichannel band scramble information; And the picture of setting Video layer passage channel displayed simultaneously is key frame, and the picture of a plurality of channels that Graphic layer passage shows corresponds to sprite.
Wherein, the process that the TV signal of respectively two tuners being exported through Video layer passage and Graphic layer passage is carried out many pictures mixed display is:
At first each road video flowing is carried out descrambling and filtration treatment respectively through smart card; Specifically obtain the information flow of corresponding channel in the video flowing through smart card; According to Entitlement Management Message in the information flow and Entitlement Control Message output program control word information CW, then according to program control word information CW descrambling and filter out the audio/video flow of the no scramble information of corresponding channel from video flowing.
The audio/video flow that each channel is corresponding carries out corresponding decoding at Video layer passage and Graphic layer passage, and generates corresponding video data at screen buffer.
Then, transfer to the Video layer after the video data in the Video layer passage shown processing, transfer to the Graphic layer after the video data in the Graphic layer passage is shown processing.
Wherein, the video data in the Video layer passage is shown that the process that transfers to the Video layer after the processing is: after the video data in the Video layer passage is handled through common video such as Scaler, Deinterlace, export the Video layer to.
Video data in the Graphic layer passage is shown that the process that transfers to the Graphic layer after the processing is: from screen buffer, catch the video data in the Graphic layer passage, and copy it to predetermined DFB data buffer zone; Then, the video data decoding in the DFB data buffer zone is handled to preset DFB surface; Afterwards the data among the DFB surface are attached to the presumptive area of the graphical interfaces of Graphic layer with the picture form.Repeat said process, a plurality of sprites are shown to the appointed area of Graphic layer respectively.
At last; Export digital TV terminal to after the data of Video layer and Graphic layer are mixed; Thus, the key frame of Video layer demonstration and each sprite of Graphic layer demonstration are simultaneously displayed on the digital TV terminal, the user can browse a plurality of moving frames simultaneously on the digital TV terminal screen; And can obtain its favorite program easily, thereby saved program searching time for users.
In the present embodiment; Because the Video layer is limited by video processing modules such as the Scaler, Deinterlace of digital television system; The Video layer passage that one cover is made up of video processing modules such as above-mentioned Scaler, Deinterlace can only be handled a video pictures, can be more than 24 or 24 by the frame per second that refreshes of the picture of this Video layer passage processing; For the Graphic layer, the user can mark off a plurality of little window areas in the image display area of same Graphic layer, and in these wicket zones, fills in literal or picture is put in subsides.
Digital television system does not stop to catch the video content of these wicket area relative television channels, and these video contents are pasted the window that is put into correspondence, thereby forms movable sprite of a plurality of whiles.
Need to prove, these sprites to refresh frame per second lower than the picture refreshing rate of Video layer, but as long as the refresh rate per second of each sprite reaches more than 6 frames, then can satisfy user's the demand of browsing basically.Wherein, the height of refresh rate depends on the handling property of system CPU.In the present embodiment,, key frame is shown through the Video layer for guaranteeing good display; Sprite all shows through the Graphic layer; In other embodiments, also can be that certain sub-picture only shows with the Video layer, and other pictures use the Graphic layer to show.
In the practical implementation process, as shown in Figure 7, above-mentioned processing module 602 comprises: tuning decoding unit 6021 and demultiplexing unit 6022, wherein:
Wherein, Tuning decoding unit 6021 of multichannel and demultiplexing unit 6022 can be set to two or more according to the quantity of physics frequency; That is to say; TV signal in corresponding each physics frequency can be provided with one tunnel tuning decoding unit 6021 and demultiplexing unit 6022 TV signal in this physics frequency is handled.
As shown in Figure 8; Above-mentioned display module 603 comprises: descrambling filter element 6031, MPEG (Moving Pictures Experts Group/Motin Pictures Experts Group; Dynamic image expert group) decoding unit 6032, display processing unit 6033 and demonstration output unit 6034, wherein:
Further, above-mentioned descrambling filter element 6031 also is used for obtaining through smart card the information flow of the corresponding channel of each program stream of said video flowing; According to Entitlement Management Message in the information flow and Entitlement Control Message output program control word information CW; And according to program control word information CW descrambling and filter out the audio/video flow of the no scramble information of corresponding channel from said video flowing.
Further; Corresponding comprise the video flowing of two-way program stream at least carries out decoding and displaying through Graphic layer passage application scenarios with what processing obtained; Above-mentioned mpeg decode unit 6032 also is used for the audio/video flow that each channel is corresponding and carries out corresponding decoding at Graphic layer passage, and generates corresponding video data at screen buffer;
Above-mentioned display processing unit 6033 also is used for transferring to the Graphic layer after video data with Graphic layer passage shows processing;
Above-mentioned demonstration transmission unit 6034 also is used for exporting the data of Graphic layer to display terminal.
Need to prove that each picture can the simultaneously movable different TV programme of demonstration in the present embodiment, key frame can be arranged on the centre of display terminal screen, also can be arranged on the limit of display terminal screen or on the angle.The size of key frame can be bigger than sprite, also can be the same with sprite big, and can also be littler than sprite.
In addition, the TV programme that sprite is corresponding can be updated to other TV programme by system's timing automatic, also can not be that timing automatic is upgraded, but be set at the state of keeping watch on certain program or certain several program by the user.Each TV programme that above-mentioned sprite shows must be in the same physics frequency; If the TV programme of the TV programme of certain sprite and other sprites are not at same physics frequency; Then the TV programme of this sprite must be in same frequency with key frame, otherwise this sprite possibly can't show.
In addition, the TV signal of two tuner outputs also can all be carried out decoding and displaying through Graphic layer passage, and the processing procedure of this kind application scenarios repeats no more at this with the processing procedure of above-mentioned Graphic layer passage to TV signal.In addition, also can show two or more channel pictures as required in the Video layer, such as, in a plurality of video pictures, also can be presented at the Video layer by one or two video pictures, and other video pictures is presented at the Graphic layer.
The quantity of tuner also can be for more than two, and the TV signal of each tuner output can correspondingly be shown by Graphic layer or Video layer, perhaps through Graphic layer and Video layer mixed display.
Further, display module 603 also is used to receive user's channel switching instruction in the present embodiment; According to channel switching instruction, the picture that the user is chosen shows through Graphic layer passage or Video layer passage.
Particularly; Present embodiment display module 603 is being realized through Graphic layer passage and Video layer passage under the movable simultaneously situation about showing of a plurality of channel pictures; Can also carry out the switching of channel according to user instruction; This switching can also can be that the channel between the different physics frequencies switches for switching between each sprite in the same physics frequency.
For switching between each sprite in the same physics frequency; Behind the selected a certain physics frequency of user; Select the channel program oneself liked in can be on the digital TV terminal screen numerous video pictures of user; If the user chooses wherein some pictures, then the picture that can the user be selected of digital TV terminal is displayed in full screen through the Graphic layer of Graphic layer passage, and the picture that also can the user be selected is displayed in full screen through the Video layer of Video layer passage.
Switch for the channel between the different physics frequencies; Carrying out mixed display with Graphic layer and Video layer among above-mentioned first embodiment is example; The Video layer shows key frame, and the Graphic layer shows a plurality of sprites, when the user need select one of them sprite to be key frame in a plurality of sprites that the Graphic layer shows; The numeral display terminal can switch to the sprite that the user chooses the Video layer and be displayed in full screen, and also can directly be displayed in full screen at the Graphic of current physics frequency layer.
As for the channel picture that switches being shown in the Graphic layer or in the Video layer, showing, can set according to user's needs in advance by system.
The video content of each television channel in above-mentioned each physics frequency can all be presented on the Graphic layer; Certain television channel in each physics frequency also can be presented on the Video layer.
Present embodiment utilizes a physics frequency of DTV that the characteristics of a plurality of TV programme can be arranged; Behind each replacing physics frequency; All be presented at whole TV programme of this physics frequency on the video screen; Make the user change the video content that platform once can be seen a plurality of channels, do further selection after watching for user real time, this kind channel switching method has been accelerated the speed of the TV programme that user search oneself likes greatly; Provide users with the convenient, also improved the competitiveness of product in market simultaneously greatly.
Embodiment of the invention digital television program display packing and terminal; Can realize the processing of the TV signal of at least one tuner output; Make the vision signal of handling each channel that obtains carry out activity and show that perhaps carry out mixed display through Video layer passage and Graphic layer passage, the user is when watch programs through Graphic layer passage; Can browse the moving frame of a plurality of television channels simultaneously, and find the TV programme of oneself liking fast; In addition, the user also can reduce the time of user's search programs, and improve the competitiveness of product in market through changing the program that the platform search is liked oneself thus.
The above is merely the preferred embodiments of the present invention; Be not so limit claim of the present invention; Every equivalent structure or flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present invention.
Claims (17)
1. a digital television program display packing is characterized in that, comprising:
Display terminal receives the TV signal of at least one tuner output;
Said TV signal is handled;
Comprise at least with what processing obtained that the video flowing of two-way program stream carries out decoding and displaying through at least one Graphic layer passage.
2. method according to claim 1 is characterized in that, saidly TV signal is carried out processed steps comprises:
Said TV signal is carried out tuning decoding and demultiplexing processing, and the video flowing of two-way program stream at least that comprises of scramble information is with in output.
3. method according to claim 2 is characterized in that, saidly TV signal is carried out processed steps further comprises:
Said TV signal is divided into two-way at least;
Each road TV signal is carried out tuning decoding and demultiplexing respectively to be handled;
The video flowing of two-way program stream at least that comprises of scramble information is with in output.
4. method according to claim 1 is characterized in that, saidly comprises at least with what processing obtained that the video flowing of two-way program stream comprises through the step that at least one Graphic layer passage carries out decoding and displaying:
Comprise at least with what processing obtained that the video flowing of two-way program stream carries out decoding and displaying through Graphic layer passage, perhaps carry out mixed display behind the corresponding decoding through Video layer passage and Graphic layer passage.
5. method according to claim 4 is characterized in that, the video flowing that comprises two-way program stream at least that processing is obtained carries out through Video layer passage and Graphic layer passage that the step of mixed display comprises behind the corresponding decoding:
Through smart card said video flowing is carried out descrambling and filtration treatment, obtain two-way audio/video flow at least;
The audio/video flow that each channel is corresponding carries out corresponding decoding at Video layer passage and Graphic layer passage, and generates corresponding video data at screen buffer;
Transfer to the Video layer after video data in the Video layer passage shown processing; Transfer to the Graphic layer after video data in the Graphic layer passage shown processing;
Export said display terminal to after the data of said Video layer and said Graphic layer are mixed.
6. method according to claim 5 is characterized in that, saidly through smart card said video flowing is carried out descrambling and filtration treatment, and the step that obtains the said audio/video flow of two-way at least comprises:
Obtain the information flow of the corresponding channel of each program stream in the said video flowing through smart card;
According to Entitlement Management Message in the said information flow and Entitlement Control Message output program control word information CW;
According to said program control word information CW descrambling and filter out the audio/video flow of the no scramble information of corresponding channel from said video flowing.
7. method according to claim 4 is characterized in that, saidly comprises at least with what processing obtained that the video flowing of two-way program stream comprises through the step that Graphic layer passage carries out decoding and displaying:
Through smart card said video flowing is carried out descrambling and filtration treatment, obtain two-way audio/video flow at least;
The audio/video flow that each channel is corresponding carries out corresponding decoding at Graphic layer passage, and generates corresponding video data at screen buffer;
Transfer to the Graphic layer after video data in the Graphic layer passage shown processing;
Export the data of said Graphic layer to said display terminal.
8. according to claim 5 or 7 described methods, it is characterized in that, said video data in the Graphic layer passage shown that the step that transfers to the Graphic layer after the processing comprises:
From screen buffer, catch the video data in the Graphic layer passage, and copy it to predetermined DFB data buffer zone;
Video data decoding in the said DFB data buffer zone is handled to preset DFB surface;
Data among the said DFB surface are attached to the presumptive area of the graphical interfaces of Graphic layer with the picture form.
9. method according to claim 1 is characterized in that, the corresponding picture that shows two or more channels of said Graphic layer passage; The corresponding picture that shows at least one channel of said Video layer passage.
10. method according to claim 9 is characterized in that, also comprises:
Receive user's channel switching instruction;
According to said channel switching instruction, the picture that the user is chosen shows through Graphic layer passage or Video layer passage.
11. a digital television program display terminal is characterized in that, comprising:
Receiver module is used to receive the TV signal that at least one tuner is exported;
Processing module is used for said TV signal is handled;
Display module is used for comprising at least with what processing obtained that the video flowing of two-way program stream carries out decoding and displaying through at least one Graphic layer passage.
12. terminal according to claim 11 is characterized in that, said processing module comprises:
Tuning decoding unit is used for said TV signal is carried out tuning decoding;
Demultiplexing unit is used for that tuning decoded TV signal is carried out demultiplexing and handles, and the video flowing of two-way program stream at least that comprises of scramble information is with in output.
13. terminal according to claim 11 is characterized in that, said display module comprises:
The descrambling filter element is used for through smart card said video flowing being carried out descrambling and filtration treatment, obtains the audio/video flow of the said program stream of two-way at least;
The mpeg decode unit is used for the audio/video flow that each channel is corresponding and carries out corresponding decoding at Video layer passage and Graphic layer passage, and generates corresponding video data at screen buffer;
Display processing unit is used for transferring to the Video layer after video data with Video layer passage shows processing; Transfer to the Graphic layer after video data in the Graphic layer passage shown processing;
Show output unit, export said display terminal to after being used for the data of said Video layer and said Graphic layer are mixed.
14. terminal according to claim 13 is characterized in that, said descrambling filter element also is used for obtaining through smart card the information flow of the corresponding channel of each program stream of said video flowing; According to Entitlement Management Message in the said information flow and Entitlement Control Message output program control word information CW; And according to said program control word information CW descrambling and filter out the audio/video flow of the no scramble information of corresponding channel from said video flowing.
15. terminal according to claim 13 is characterized in that,
Said mpeg decode unit also is used for the audio/video flow that each channel is corresponding and carries out corresponding decoding at Graphic layer passage, and generates corresponding video data at screen buffer;
Said display processing unit also is used for transferring to the Graphic layer after video data with Graphic layer passage shows processing;
Said demonstration transmission unit also is used for exporting the data of said Graphic layer to said display terminal.
16. terminal according to claim 15 is characterized in that, said display processing unit also is used for catching the video data the Graphic layer passage from screen buffer, and copies it to predetermined DFB data buffer zone; Video data decoding in the said DFB data buffer zone is handled to preset DFB surface; Data among the said DFB surface are attached to the presumptive area of the graphical interfaces of Graphic layer with the picture form.
17., it is characterized in that said display module also is used to receive user's channel switching instruction according to each described terminal among the claim 11-16; According to said channel switching instruction, the picture that the user is chosen shows through Graphic layer passage or Video layer passage.
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