CN102307316A

Movatterモバイル変換

Info

Publication number: CN102307316A
Application number: CN201110266655A
Authority: CN
Inventors: 薛涛
Original assignee: Shenzhen Skyworth Digital Technology Co Ltd
Current assignee: Shenzhen Skyworth Digital Technology Co Ltd
Priority date: 2011-09-09
Filing date: 2011-09-09
Publication date: 2012-01-04

Abstract

The embodiment of the invention discloses a mobile terminal-based method for displaying a digital television content. The method comprises that following steps that: a mobile terminal receives television data information sent by a digital television set-top box through a wireless network; the television data information is processed into a digital television content by the mobile terminal; and then the mobile terminal displays the digital television content on the mobile terminal screen. In addition, the embodiment of the invention also discloses a mobile terminal-based system for displaying a digital television content, a mobile terminal and a digital television set-top box. According to the embodiment of the invention, a service range of a mobile terminal is expanded; a demand that a user can enjoy all services provided by a television network at the mobile terminal is met; and user experiences are improved.

Description

Method and system and device thereof based on the mobile terminal displays digital TV contents

Technical field

The present invention relates to communication technical field, relate in particular to a kind of method and system and device thereof based on the mobile terminal displays digital TV contents.

Background technology

Along with the develop rapidly of cable digital TV, DTV STB popularize to have used in the family, and abundant television program service and various TV value-added service make the Cable Network network compare other networks to have the advantage that can't reach.But DTV is the advantage of its output effect relatively, also has the intrinsic inferior position of poor mobility.

Since a very long time, though the mobile terminal device development is swift and violent, various high performance products are continuous, but can not present various television program service and the value-added service that digital TV network provides on the existing portable terminal.In existing, the user has can enjoy the abundant television program service of TV network and the demand of value-added service on portable terminal.Yet the user but can not enjoy abundant television program service and the value-added service that digital TV network provides when use has portable terminal now, so, reduced user's Experience Degree.

Summary of the invention

The objective of the invention is to overcome the deficiency of prior art, a kind of method and system and device thereof based on the mobile terminal displays digital TV contents is provided, can with the television program service of DTV and other value-added services are complete be presented on the portable terminal.

In order to address the above problem, the present invention proposes a kind of method based on the mobile terminal displays digital TV contents, comprising:

The TV data information that portable terminal receiving digital television STB sends through wireless network;

Portable terminal becomes digital TV contents with said TV data information processing;

Portable terminal is presented at said digital TV contents on the mobile terminal screen.

Wherein, before the TV data information that said portable terminal receiving digital television STB sends through wireless network, also comprise: the data transaction of each display layer that DTV STB is built-in with it becomes TV data information.

Wherein, said each display layer comprises looks audio layer and screen menu type regulative mode OSD display layer, and the data transaction of each display layer that said DTV STB is built-in with it becomes TV data information, comprising:

DTV STB receives the CA descrambling to the original video-audio program stream condition of carrying out of looking audio layer, obtains video-audio program stream;

DTV STB becomes bitmap BMP form with the format conversion of graph text information in the screen menu type regulative mode OSD display layer, obtains the graph text information of bitmap BMP form.

Said each display layer also comprises vernier layer; The data transaction of each display layer that said DTV STB is built-in with it becomes TV data information, also comprises: DTV STB is a coordinate parameters information with the information translation that shows with the vernier form in the vernier layer.

Said portable terminal becomes digital TV contents with said TV data information processing, comprising:

After said portable terminal receives said TV data information; Video-audio program in said TV data information stream is decoded; And redraw the graph text information of coordinate parameters information and bitmap BMP form; Obtain the information of redrawing, and decoded video-audio program stream is recombinated with the said information of redrawing, obtain digital TV contents.

The data transaction of each display layer that said DTV STB is built-in with it becomes before the TV data information, also comprises:

Portable terminal obtains user's operation information, and sends to DTV STB through wireless network after converting said operation information to operational order that DTV STB can respond;

DTV STB is adjusted the data of the corresponding display layer of said operational order according to said operational order.

Said portable terminal place is provided with the virtual remote control device, is used to obtain user's operation information, and converts said operation information into guidance command that DTV STB can respond.

Accordingly, the embodiment of the invention also discloses a kind of DTV STB, said DTV STB comprises:

Modular converter, the data transaction that is used for each display layer that DTV STB is built-in becomes TV data information;

Wireless transport module is used for giving portable terminal with said TV data information through wireless network transmissions.

Change the supplied processing that can supply the word TV set-top box to send into; Thereby it is continuous to plant high performance product; Said each display layer comprised look audio layer and screen menu type regulative mode OSD display layer; Said modular converter is used for the original video-audio program stream condition of carrying out of looking audio layer is received the CA descrambling, obtains video-audio program stream; And the format conversion of graph text information in the screen menu type regulative mode OSD display layer become bitmap BMP form, obtain the graph text information of bitmap BMP form.

Said wireless transport module also is used for the operational order that mobile terminal receive transmits through wireless network; Said DTV STB also comprises processing module, is used for according to said operational order, adjusts the data of the corresponding display layer of said operational order.

Accordingly, the embodiment of the invention also discloses a kind of portable terminal, said portable terminal comprises:

Wireless transport module is used for the TV data information that the receiving digital television STB sends;

Processing module is used for said TV data information processing is become digital TV contents;

Display module is used to show said digital TV contents.

Said processing module comprises,

Decoding unit, the video-audio program stream of the said TV information that is used for decoding;

Redraw the unit, be used for redrawing the coordinate parameters information of said TV information and the graph text information of bitmap BMP form, obtain the information of redrawing;

Recomposition unit, said information and the decoded video-audio program stream of redrawing that is used to recombinate obtains digital TV contents.

Said portable terminal also comprises the order editor module, and said order editor module is used to receive user's operation information, and converts said operation information to operational order that DTV STB can respond;

Said wireless transport module also is used for said operational order is transferred to DTV STB.

Accordingly, the embodiment of the invention also discloses a kind of system based on the mobile terminal displays digital TV contents, said system comprises:

DTV STB, the data transaction that is used for each display layer that it is built-in becomes TV data information; And said TV data information is passed through wireless network transmissions give portable terminal;

Portable terminal is used for the TV data information that the receiving digital television STB sends, and said TV data information processing is become digital TV contents, and said digital TV contents is presented on the mobile terminal screen.

Said portable terminal also is used to receive user's operation information, and gives DTV STB through wireless network transmissions after converting said operation information to operational order that DTV STB can respond;

Said DTV STB is used for according to said operational order, adjusts the data of the corresponding display layer of said operational order.

Beneficial effect of the present invention:

In the embodiment of the invention, the TV data information that portable terminal receiving digital television STB transmits through wireless network, and this TV data information handled obtains digital TV contents and is presented on the portable terminal.The digital TV contents that appears on the portable terminal is all business that STB can be realized, digital TV network provides, and comprises and looks audio service, also comprises miscellaneous services such as video request program, quasi-video request program, mosaic, program guide.So, the user promptly can enjoy all business that digital TV network provides through portable terminal, expanded the business service scope of portable terminal, has improved the Experience Degree that the user uses portable terminal.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the method flow diagram based on the mobile terminal displays digital TV contents in the embodiment of the invention;

Fig. 2 is the method flow diagram based on portable terminal remotely controlling digital television STB in the embodiment of the invention;

Fig. 3 is the DTV STB structural representation in the embodiment of the invention;

Fig. 4 is the mobile terminal structure sketch map in the embodiment of the invention;

Fig. 5 is the structural representation of the processing module in the embodiment of the invention;

Fig. 6 is the system architecture diagram based on the mobile terminal displays digital TV contents in the embodiment of the invention.

Embodiment

To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.

Method in the embodiment of the invention based on the mobile terminal displays digital TV contents; Its core concept is: the TV data information that portable terminal receiving digital television STB sends through wireless network; And this TV data information handled, form the displayable digital TV contents of portable terminal; Digital TV contents after portable terminal will be handled is presented on the mobile terminal screen.

Concrete, Fig. 1 shows the method flow diagram based on the mobile terminal displays digital TV contents in the embodiment of the invention, comprises that step is following:

S101: DTV STB and mobile terminal device are accomplished locking, and a DTV STB once can only lock a portable terminal, generally speaking, can accomplish locking through the network physical address and the DTV STB of portable terminal.

S102: the TV data information that portable terminal receiving digital television STB sends through wireless network.

TV data information in this step is that DTV STB is sent, the manageable data message of portable terminal.

For example, TV data information can be that data transaction by DTV STB each display layer that it is built-in forms.Wherein, DTV STB is built-in with a plurality of display layers, for example looks audio layer, screen menu type regulative mode OSD display layer (also claiming the user interactions layer).Particularly, DTV STB can adopt the data transaction of following mode each display layer that it is built-in to become TV data information:

On the one hand, DTV STB receives the CA descrambling to the original video-audio program stream condition of carrying out of looking audio layer, obtains video-audio program stream;

Wherein, the original video-audio program stream of looking audio layer be DTV STB from cable TV network, receive in the TV networks such as satellite antenna.Comprise video/audio and value-added service data in the original video-audio program stream.Generally speaking; Original video-audio program stream in the TV network all be with transmit stream (Transport Stream, mode TS) transmits, therefore; Original video-audio program stream is also referred to as the original audio TS stream of looking, and the original audio TS stream of looking is made up of a plurality of original audio frequency PES streams of looking.

DTV STB need carry out the CA descrambling to original video-audio program stream, obtains video-audio program stream, and gives mobile terminal device with video-audio program stream through wireless network transmissions.This shows that the video-audio program that behind the CA descrambling, obtains stream belongs to the part of the TV data information that portable terminal can handle.

Need to prove that DTV STB need be to the reason that original video-audio program stream carries out the CA descrambling: because video/audio in the TV network and value-added service data all just transmit after the CA scrambling process.Therefore, the original video-audio program stream that receives of DTV STB is the video-audio program stream after the CA scrambling.Because portable terminal does not generally possess the function of CA descrambling,, obtain video-audio program stream so DTV STB need carry out the CA descrambling to the original video-audio program stream that from TV network, receives.And then the video-audio program flow transmission that will after the CA scramble process, obtain can improve the treatment effeciency of portable terminal like this to portable terminal.

And, because the data volume of the video-audio program that obtains behind descrambling stream is big.Preferably, also video-audio program stream is encoded earlier, the video-audio program flow transmission after will encoding is again given portable terminal, and decodes at the portable terminal place.That is to say that generally, the video-audio program stream that is transferred in the TV data information of portable terminal is the video-audio program stream after encoding process.

On the other hand, DTV STB also becomes bitmap BMP form with the format conversion of graph text information in the screen menu type regulative mode OSD display layer, obtains the graph text information of bitmap BMP form, and gives portable terminal through wireless network transmissions.Wherein, the graph text information of bitmap BMP form also belongs to the part of TV data information.

What need explanation a bit is; Because the graph text information of OSD display layer changes little; Only need or carry out synchronous transmission when changing, so the graph text information data volume of the bitmap BMP form that obtains after the conversion is not too large, therefore with certain low frequency; DTV STB need not encoded to it when it is transferred to portable terminal.

By on can know; DTV STB is handled the data of looking audio layer and the data of OSD display layer; Converted the TV data information that can supply portable terminal to handle to, the TV data information after DTV STB also will be handled is given portable terminal through wireless network transmissions.

Here need to prove that if also there are other operation layers in the DTV STB, like vernier layer, then DTV STB also need become the data transaction of other operation layer TV data information and it is transferred to portable terminal.For example, DTV STB need be a coordinate parameters information with the information translation that shows with the vernier form in the vernier layer, and gives portable terminal through wireless network transmissions.

By on can know, necessarily comprise the graph text information of video-audio program stream and bitmap BMP form in the TV data information, can comprise coordinate parameters information.The data of each display layer that at first DTV STB need be built-in with it are handled, and convert the TV data information that can supply portable terminal to handle to.

S103: portable terminal is handled this TV data information, forms the displayable digital TV contents of portable terminal.

Particularly, portable terminal can adopt following manner that TV data information is handled:

After portable terminal receives the TV data information that DTV STB transmits, extract the video-audio program stream in the TV data information, and redraw the graph text information of bitmap BMP form in the TV data information, obtain the information of redrawing.If in the TV data information coordinate parameters information is arranged, need redraw the graph text information and the coordinate parameters information of bitmap BMP form, thereby obtain the information of redrawing.At last video-audio program stream and the information of redrawing are recombinated, obtain the displayable data television content of portable terminal.If the video-audio program that extracts stream is the video-audio program stream after encoding process; Portable terminal is then decoded to this video-audio program stream so; And decoded video-audio program stream and the information of redrawing recombinated, obtain the displayable data television content of portable terminal.

Need explanation on the other hand; The digital TV contents that portable terminal can appear; Refer to STB all business that can realize, that TV network provides, comprise and look audio service, also comprise miscellaneous services such as video request program, quasi-video request program, mosaic, program guide.

S104: the digital TV contents that portable terminal will obtain after will handling is presented on the mobile terminal screen.

Through step S101-S104, DTV STB is given portable terminal with the video-audio program flow transmission, makes can not only present the television program service that TV network provides on the portable terminal, as looks audio service; Simultaneously DTV STB also is transferred to portable terminal with the graph text information in the OSD display layer, and redraws at the portable terminal place, thereby makes and can reappear the OSD display layer at the portable terminal place.Owing to the OSD display layer is arranged at the portable terminal place; Institute is so that the user can be at the enterprising line operate of portable terminal; And user's operation can also return to DTV STB through the OSD display layer, has so just realized the information interaction between portable terminal and the DTV STB.Through the information interaction between portable terminal and the DTV STB; Thereby make and on portable terminal, can also present all value-added services that TV network provides; Like business such as video request program, quasi-video request program, mosaic, program guides, and then improved user's Experience Degree.

The portable terminal here can also be realized the terminal remote control, and portable terminal obtains user's operation information, and sends to DTV STB through wireless network after converting this operation information into operational order that DTV STB can respond.DTV STB responds this operational order, adjusts the data of the corresponding display layer of said operational order.

Particularly, the virtual remote control device can be set at the portable terminal place, and convert the operation information of user on the virtual remote control device into guidance command that DTV STB can respond, and send guidance command to DTV STB through wireless network.This guidance command of DTV STB response, judgement need be adjusted that display layer, and adjusts this display layer.At last, STB is handled the data of adjusted display layer and the data of other display layer according to the described operating process of Fig. 1 embodiment, obtains the digital TV contents that the user needs and is presented on the portable terminal.Fig. 2 shows the method flow diagram of portable terminal remotely controlling digital television STB, comprising:

S201: portable terminal obtains user's operation information, and converts user's operation information into operational order that DTV STB can respond, and this operational order is sent to DTV STB;

Particularly, the virtual remote control device can be set at the portable terminal place, this virtual remote control device can be realized with the form of software.The virtual remote control device can receive the operation information of user's input; And be converted into the guidance command that STB can respond; Because the virtual remote control device comprises key area and vernier region, therefore, guidance command then comprises remote controller key order and/or displacement command etc.Wherein, the operation information that the remote controller key order is imported on the key area of virtual remote control device corresponding to the user, the operation information that displacement command is imported on the vernier region of virtual remote control device corresponding to the user.

S202: DTV STB is according to the operational order that receives, and judgement need be adjusted the data of that built-in display layer, and the data of corresponding this display layer of adjustment.Among the step S202, the process of the guidance command that DTV STB response portable terminal transmits, the process of the guidance command that transmits with DTV STB responding digital TV remote controller in the prior art is identical, is not described in detail at this.

Particularly, DTV STB can be adjusted the data of the corresponding display layer of this guidance command according to the guidance command that receives.For example; After the digital television apical grafting is received the remote controller key order or displacement command that portable terminal transmits; Judges need be changed the programme information of watching; DTV STB then need be to looking audio layer adjustment so, specifically is that the data that audio layer receives are looked in adjustment from TV network, promptly original video-audio program stream.At last, look the data of audio layer and the data of other display layer are handled according to the described flow process of step S102-S105 among Fig. 1 embodiment, can guarantee that promptly the programme information that appears on the portable terminal is user's needs adjusted.

In the present embodiment, on portable terminal, not only can present all business that TV network provides, comprise television program service and value-added service.And; Portable terminal can also come the remotely controlling digital television STB through the mode of carrying out information interaction with DTV STB; Thereby make that the user can be according to actual needs, television program service or value-added service that flexible selection is liked have further improved user's Experience Degree.

Need to prove; In the embodiment of Fig. 1 and Fig. 2; The signal source of video-audio program stream is preferably the TV network of cable TV network or satellite antenna equiband broad, so, can guarantee that then the quality of the video-audio program stream that DTV STB obtains is higher.And when giving portable terminal with TV data information through wireless network transmissions, wireless network is preferably family or other local area network (LAN)s among a small circle, can guarantee the transmission bandwidth that wireless network is enough like this.So design then can demonstrate the HDTV business on portable terminal, compares with the Video service that existing portable terminal is provided, and this programme can guarantee the definition of the video traffic that portable terminal appears.

Accordingly, Fig. 3 shows the structural representation of the DTV STB in the embodiment of the invention, and this DTV STB comprises:

Modular converter 301, the data transaction that is used for each display layer that DTV STB is built-in becomes the treatable TV data information of portable terminal;

Wireless transport module 302 is used for giving portable terminal with TV data information through wireless network transmissions.

Need to prove; Because DTV STB is built-in with and looks audio layer and OSD display layer etc.; Therefore; When themodular converter 301 here is TV data information in the data transaction of each display layer that DTV STB is built-in, specifically be used for the original video/audio program stream of the looking audio layer condition of carrying out is received the CA descrambling, obtain video-audio program stream; And also be used for the format conversion of screen menu type regulative mode OSD display layer graph text information is become bitmap BMP form, obtain the graph text information of bitmap BMP form.That is to say that TV data information comprises the graph text information of video-audio program stream and bitmap BMP form.

And if also there are other operation layers in DTV STB, the data transaction that modular converter also is used for other operation layers is a TV data information.For example; Also there is vernier layer in DTV STB; 301 of modular converters are coordinate parameters information with the information translation that shows with the vernier form in the vernier layer also so, with its part as TV data information, and are transferred to mobile terminal device through wireless network transmission module 302.Thewireless transport module 302 here is used for giving portable terminal with the TV data message transmission.

Wireless transport module 302 also is used for the operational order that mobile terminal receive transmits through wireless network;

DTV STB also comprisesprocessing module 303, is used for the operational order that receives according towireless transport module 302, adjusts the data of the corresponding display layer of this operational order.

Accordingly, Fig. 4 shows the mobile terminal structure sketch map in the embodiment of the invention, and this portable terminal comprises:

Wireless transport module 401 is used for the TV data information that portable terminal that the receiving digital television STB sends can show;

Processing module 402 is used for this TV data information is handled, and forms the digital TV contents that portable terminal can show;

Display module 403 is used to show the digital TV contents that obtains after processingmodule 402 is handled.

Accordingly, portable terminal also comprisesorder editor module 404, andorder editor module 404 is used to receive user's operation information, and converts operation information to operational order that DTV STB can respond.Theorder editor module 404 here can be realized the terminal remote control; Concrete terminal distant control function is realized through following mode: realize at the portable terminal place converting the operation information of user on the virtual remote control device into guidance command that the DTV STB described in Fig. 3 embodiment can respond by the virtual remote control device.And send remote control command to DTV STB throughwireless transport module 401, and by DTV STB response guidance command, the data of the corresponding display layer of corresponding this remote control command of adjustment.According to the described working method of Fig. 3 embodiment, the data of adjusted display layer and the data of other each display layer are changed, handled, form the required digital TV contents of user, and be presented on the portable terminal.

As shown in Figure 5, in one embodiment,processing module 402 comprises:

Decoding unit 4021 is used for the video-audio program stream of TV information is decoded;

Redrawunit 4022, be used for the coordinate parameters information of TV information and the graph text information of bitmap BMP form are obtained the information of redrawing;

Recomposition unit 4023 is used for information of redrawing and decoded video-audio program stream are recombinated, and obtains digital TV contents.

Through decoding unit 4021, redraw the common cooperation ofunit 4022 andrecomposition unit 4023; Portable terminal can become digital TV contents with the TV data information processing that receives, and reaches on mobile terminal device, to present all professional purposes that TV network provides.

Accordingly, Fig. 6 shows in the embodiment of the invention based on the system schematic of mobile terminal displays digital TV contents, and said system comprises:

DTV STB 61, the data transaction that is used for each display layer that it is built-in becomes the treatable TV data information of portable terminal; And the TV data information after will handling is given portable terminal 62 through wireless network transmissions;

Portable terminal 62 is used for the TV data information that receivingdigital television STB 61 sends; This TV data information is handled, formed the displayable digital TV contents of portable terminal; And this digital TV contents is presented on the mobile terminal screen.

Theportable terminal 62 here can also receive user's operation information, and converts user's operation information to operational order that DTV STB can respond, and gives DTV STB with this operational order through wireless network transmissions;DTV STB 61 is according to the operation response order that receives, and the operation response order, adjusts the data of the corresponding display layer of this operational order.According to the described working method of Fig. 3 embodiment, the data of adjusted display layer and the data of other display layer are changed successively, handled, form digital TV contents and be presented on the portable terminal.So, then realized the distant control function of 62 pairs ofDTV STBs 61 of portable terminal.

To sum up; DTV STB converts the manageable TV data information of portable terminal to its each built-in display layer; And pass through portable terminal to this TV data information processing; Thereby make all STBs all business that can realize, that TV network provides finely to be presented on the portable terminal, comprise and look audio service, also comprise miscellaneous services such as video request program, quasi-video request program, mosaic, program guide.So, the user then can enjoy all business that TV network provides well through portable terminal, has widened the service application scope of portable terminal, has satisfied user's demand, has improved user's Experience Degree.

Further, through the virtual remote control device being set, realize the remote control of portable terminal to DTV STB at the portable terminal place.So, the user is through the virtual remote control device of portable terminal, television program service and the various value-added service that can select various TV networks to provide neatly.

Above disclosedly be merely preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.

Claims

1. the method based on the mobile terminal displays digital TV contents is characterized in that, comprising:

2. the method based on the mobile terminal displays digital TV contents as claimed in claim 1; It is characterized in that; Before the TV data information that said portable terminal receiving digital television STB sends through wireless network, also comprise: the data transaction of each display layer that DTV STB is built-in with it becomes TV data information.

3. the method based on the mobile terminal displays digital TV contents as claimed in claim 2; It is characterized in that; Said each display layer comprises looks audio layer and screen menu type regulative mode OSD display layer; The data transaction of each display layer that said DTV STB is built-in with it becomes TV data information, comprising:

4. the method based on the mobile terminal displays digital TV contents as claimed in claim 3; It is characterized in that; Said each display layer also comprises vernier layer; The data transaction of each display layer that said DTV STB is built-in with it becomes TV data information, also comprises: DTV STB is a coordinate parameters information with the information translation that shows with the vernier form in the vernier layer.

5. the method based on the mobile terminal displays digital TV contents as claimed in claim 4 is characterized in that, said portable terminal becomes digital TV contents with said TV data information processing, comprising:

After said portable terminal receives said TV data information; Video-audio program in said TV data information stream is decoded; And redraw coordinate parameters information and the graph text information of bitmap BMP form in the said TV data information; Obtain the information of redrawing, and decoded video/audio program stream and the said information of redrawing are recombinated, obtain digital TV contents.

6. like each described method of claim 2-5, it is characterized in that the data transaction of each display layer that said DTV STB is built-in with it becomes before the TV data information, also comprises based on the mobile terminal displays digital TV contents:

Portable terminal obtains user's operation information, and sends to DTV STB through wireless network after converting said operation information into operational order that DTV STB can respond;

7. the method based on the mobile terminal displays digital TV contents as claimed in claim 6; It is characterized in that; Said portable terminal place is provided with the virtual remote control device, is used to obtain user's operation information, and converts said operation information into guidance command that DTV STB can respond.

8. a DTV STB is characterized in that, said DTV STB comprises:

9. DTV STB as claimed in claim 8; It is characterized in that; Said each display layer comprises looks audio layer and screen menu type regulative mode OSD display layer; Said modular converter is used for the original video-audio program stream condition of carrying out of looking audio layer is received the CA descrambling, obtains video-audio program stream; And the format conversion of graph text information in the screen menu type regulative mode OSD display layer become bitmap BMP form, obtain the graph text information of bitmap BMP form.

10. like claim 8 or 9 described DTV STBs, it is characterized in that,

Said wireless transport module also is used for the operational order that mobile terminal receive transmits through wireless network;

Said DTV STB also comprises processing module, is used for according to said operational order, adjusts the data of the corresponding display layer of said operational order.

11. a portable terminal is characterized in that, said portable terminal comprises:

Display module is used to show said digital TV contents.

12. portable terminal as claimed in claim 11 is characterized in that, said processing module comprises,

13. like claim 11 or 12 described portable terminals; It is characterized in that; Said portable terminal also comprises the order editor module, and said order editor module is used to receive user's operation information, and converts said operation information to operational order that DTV STB can respond;

14. the system based on the mobile terminal displays digital TV contents is characterized in that, said system comprises:

15. system as claimed in claim 14; It is characterized in that; Said portable terminal also is used to receive user's operation information, and gives DTV STB through wireless network transmissions after converting said operation information to operational order that DTV STB can respond;