CN1728788A - Digital broadcast receiver, and method for restricting teleview - Google Patents
Digital broadcast receiver, and method for restricting teleview Download PDFInfo
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- CN1728788A CN1728788A CNA2004100531717A CN200410053171A CN1728788A CN 1728788 A CN1728788 A CN 1728788A CN A2004100531717 A CNA2004100531717 A CN A2004100531717A CN 200410053171 A CN200410053171 A CN 200410053171A CN 1728788 A CN1728788 A CN 1728788A
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Abstract
The digital broadcast receiver includes following parts: de- multiplexer in use for decomposing video / audio information packet, and outputting information needed by subject restricted to watch; A/V encoder for encoding signal of video/audio; video memory for storing image signal output from A/V encoder; control module for restricting watching in use for partitioning image frames, and the module includes setting information combined with image to be encoded for interface needed for restricting watching; interface setting filter in module type for partitioning part image frame restricted to watch. The invention determines image frames and locations, which are unwanted to young persons. The method transfers relevant information in form synchronous to A/V code stream, making different users possible to watch different contents.
Description
Technical field
The present invention relates to the digit broadcasting system field, in particular to digit broadcasting receiver and control method thereof.
Background technology
This invention is about which picture and position are judged the problem that the minor is harmful to, and to transmit relevant information with the synchronous form of A/V code stream, makes different user watch the digit broadcasting receiver of different content and the technology of watching method for limiting thereof
Usually, digital broadcast also provides relevant EPG (Electonic Program Guide) information, and comprise each cannel broadcast information and playback level in EPG information when sending play signal.
The user can be according to EPG information, in tens of～hundreds of channels of Digital Television, sets the channel of oneself liking, and when the channel of switching digital TV, can be according to above-mentioned setting content switching channels.
In addition, according to the playback level of user's all ages and classes or each channel, the channel that the user can watch is classified, and channel correlation is set play limiting function, if the grade that can not watch, system will control the broadcasting pictures that does not show this grade automatically.
In the prior art, the user can import PIN Code in STB (Set Top Box).At this moment, be benchmark with age-based section classification results, set and watch restriction (Parental rate) function, when the user switches to the channel of playing related-program with channel, must import PINCode so, just can watch the programme content of selected channel.
At this moment, the benchmark result of user's selection is the problem that whether shows on picture.
TV station can utilize (content_descriptor), sends kind and the similar types information play to SI information.
If situation (parental_rating_descriptor), just can be according to the age benchmark, transmit the age benchmark and watch restriction (parental rating) information, and in STB, the age benchmark of setting with the user is watched my benchmark of restriction (parental rating) information, the restricted information of playing of watching is compared, and whether decision is presented at it problem on picture.(DVB-SI：ETSI EN 200 468：DVB Specification for ServiceInformation(SI)in DVB Systems，ISO/IEC 13818-1：″Informationtechnology Generic coding of moving pictures and associatedaudio information Part 1：Systems-International Standard(IS))″
Digital Television of the prior art and watch that method for limiting has following several problem: for example, in the film that children below 15 years old forbid watching, perhaps picture is analyzed in it, and having much is that children below 15 years old watch also harmless film.
In the prior art, if when father and mother and children watch a film simultaneously, scene or content that children are harmful to appears in moment property ground, on father and mother's position, consider so, and but be to have no the choice.
Suppose that in all scenes or all the elements having only sub-fraction is the content that children are harmful to, but in the prior art, the restriction benchmark of age bracket is applicable to all the elements.The result causes because of the sub-fraction content, and obstructs the drawback that enlarges spectators' scope, and brings very big inconvenience to the user.
That is to say, even if can carry out common content of watching restriction, as long as can avoid a fraction of image or sound, just can reduce the benchmark of watching restriction, guaranteeing the user of wider scope, but in the prior art, age bracket restriction benchmark but is applicable to all contents.This invention is intended to solve the above-mentioned problems in the prior art, determines the problem which picture and position are harmful to the minor by TV station, and with the form transmission relevant information synchronous with the A/V code stream, different user is watched the difference classification of restriction.
Summary of the invention
For achieving the above object, invention provides a kind of digit broadcasting receiver, comprises as the lower part: decomposing video, and the inverse multiplexing device of the required column information of restriction is watched in output; Video/audio signal is carried out the A/V encoder of encoding process; The video memory of the picture signal that preservation is exported from the A/V encoder; Carrying out on the image encoded in conjunction with the interface setting information of watching that restriction is required, dividing the control of picture with modular form and watch limiting module; Watch the interface setting filter that the restricted part picture is required with the modular form division; The image that is combined with part of module information is deciphered the video decoder of processing.
The method for limiting of watching of the digit broadcasting receiver that is developed into according to this invention comprises following several stages: promptly, when beginning broadcast program by TV station, transmit the stage that age bracket is watched the required metadata of restriction with synchronized form; Possessing on the basis that receives image and sound,, situation is improperly sent the stage of improper signal by metadata channel; Age bracket is set watches the restriction benchmark, and when in the process of watching, receiving improper signal, the stage that compares with the benchmark of in current configuration, setting; Comparative result needs restriction if any part, just video/audio signal is carried out the stage of part restriction.
The digit broadcasting receiver of developing according to this invention and watch that method for limiting has following several effect:
One, this invention determine the problem which picture and position are harmful to the minor by TV station, and with the form transmission relevant information synchronous with the A/V code stream, different user are carried out part ground receive restriction.
If two, in all scenes or all the elements, harmful part only accounts for sub-fraction, age bracket restriction benchmark is not to be applicable to all the elements, and only watches restriction at relevant portion, with user's expansion of raising related content and user's convenience.
Three, owing to the limited form of watching the restriction desired location is varied, so, also can guarantee the high-quality of image even if watch under the situation of limitation function suitable.
By above-mentioned description, so long as the related work personnel all can make various changes and modifications in not breaking away from the technological thought scope of this invention.
Therefore, the technical scope of this invention is not limited to above-mentioned several particular instance, but depends on the patent claim of this invention.
Description of drawings
Fig. 1 is the digital broadcasting receiver construction module figure that is developed into according to this invention,
Fig. 2 is the figure tabular form structure chart of PMT column,
Fig. 3 is the AV control age bracket restriction column figure tabular form structure chart that is developed into according to this invention,
Fig. 4 is the AV control age bracket restriction column operation species figure that is developed into according to this invention,
Fig. 5 limits required interface setting figure according to the AV control age bracket that this invention is developed into,
Fig. 6 watches the method for limiting flow chart according to what this invention was developed into.
Symbol description
11.RF receive terminal 12.DEMUX
13.A/V encoder 14. video memory
15. limiting module 16. interface setting filters are watched in control
17. video decoder
Embodiment
Describe the digit broadcasting receiver example that is developed into according to this invention and other purpose, characteristics and the effect thereof of method thereof in detail with reference to picture, will a understanding of further understanding be arranged this invention.It is as follows to describe the digit broadcasting receiver example and the method thereof that are developed into according to this invention in detail with reference to picture: promptly,
Fig. 1 is the digit broadcasting receiver construction module figure that is developed into according to this invention.This invention can be carried out part according to different user and receive restriction when watching the digital broadcast program.
For this reason, broadcast company (content supplier) according to the part restriction of content, provides part to watch restricted information for the angle of mass society ethics.
In addition, the information that is provided by broadcast company is the very strong factor of a kind of real-time, so pay attention to very much related protocol or meet watching of real-time factor limiting operation.
In this invention, when watching TV programme such as film and news, the information of setting in broadcast reception system according to the user (could watch according to level setting), specific part and all parts of picture carry out that picture mosaic is handled, blank (cut-out picture) handled or certain part is carried out Fuzzy Processing to any moment.
As shown in Figure 1, form by following structure: promptly, receive play signal RF and receive terminal 11 according to the digit broadcasting receiver that this invention is developed into; The video of decomposing being re-used, and the inverse multiplexing device 12 of the required column information of restriction is watched in output; The video/audio signal of output is carried out the A/V encoder 13 of encoding process; The picture signal video memory 14 of being preserved to output from A/V encoder 13; On carrying out the image (Image) that video coding handles, be combined in the information that generates in the interface setting filter, and watch limiting module (Parental Rate Control Application) 15 with the control that the form of module is carried out picture mosaic or division; Set the interface setting filter (Region Operationfilter) 16 at picture mosaic or the required interface of picture part modularization; Picture mosaic and picture part modularization information combining image are deciphered the video decoder 17 of processing.
The digit broadcasting receiver that detailed description is researched and developed according to this invention watch that method for limiting is as follows: promptly,
Fig. 2 is the figure tabular form structure chart of PMT column, and Fig. 3 is the AV control age bracket restriction column figure tabular form structure chart that is developed into according to this invention.
Fig. 4 is the AV control age bracket restriction column operation species figure that is developed into according to this invention, and Fig. 5 limits required interface setting figure according to the AV control age bracket that this invention is developed into.
This invention is about by TV station which picture and position being judged the problem that the minor is harmful to, and to transmit the technology of relevant information in real time with the synchronous form of A/V code stream.Transfer approach is from PMT (Program Map Table), with the form of stream type==0x0F, to give A/V PID (Packet IDentifier) the affiliated new code stream type of programme information registration.
In addition, also, give synchronization process according to PCR (the Program Clock Reference) value of A/V code stream.
Program map table (Program Map Table; PMT) be meant, transmit the PID sequence and the satellite information table of the program identification number and the transmission packets of information of indivedual bitmaps such as the video of forming program, audio frequency.
PID is meant the Process identifier of transport stream (TS) the internal information bag of being re-used, in Digital Television is play, the signal of each channel is carried out multiplexingization processing and when outwards transmitting, at first the signal to each channel compresses separately, make packets of information, then these packets of information are carried out multiplexingization processing, and transmit with the TS form.At this moment, put on packets of information Process identifier (PID) for the packets of information of relevant a certain channel, distinguish with the packets of information of this and other channel.
(Stream Type) is as follows for code stream type in PMT column shown in Figure 2: code stream type 0x01 is ISO/IEC 11172 Video, code stream type 0x03 is ISO/IEC11172Audio, and code stream type 0x15-0x7F is ITU-T Rec.H.222.0|ISO/IEC13818-1 Reserved.In addition, code stream type 0x80-0xFF is User Private.
In this invention, age bracket is watched that required metadata (MetaData) function of control of restriction (Parental rate) is equivalent to the value between the 0x15-0xFF.
Employing is corresponding to the PID of the code stream type that is set to the MetaData purposes.
The metadata format of proposing in this invention serves as that processing is deciphered on the basis with personal program (Private Section) (with reference to ISO/IEC 13818-1).As shown in Figure 3, the name of form is called AV_Parental_RateControl Section.
In the form in Fig. 3, sync_starttime_PTS is that the AV PCR with current broadcast is worth accordingly, and it means the time started that begins operation (operation).
In addition, sync_endtime_PTS means the concluding time of operation, and rate_condition imposes a condition the condition whether control operation is carried out according to fulfiling the required parentalrate of the operational order that follows beginning closely.
In general, rate is the grade that age-based section is distinguished, and it has more than 18 years old, under-18s, ratio such as below 15 years old, below 10 years old.
Restriction of assumption age condition (rate_condition) value is 16, if set the restriction of watching below 15 years old in STB, because current rate_condition is 16, so should carry out next step operation (operation).
At this, operation species is seen Fig. 4, and region_data means 4 jiaos of row interfaces usually.
The required interface setting table of control age bracket restriction is seen Fig. 5.
In order to limit the picture rating, should set picture mosaic or part cut-out form region_type (rectangle, circle, polygon).
Comprise and show that region_type is TopLeft_X (the X coordinate position value of upper end, left side, interface), TopLeft_Y (the Y coordinate position value of upper end, left side, interface), BottomRight_X (the X coordinate position value of bottom, right side, interface), the BottomRight_Y (the Y coordinate position value of bottom, right side, interface) of rectangle (rectangle) condition.
Also comprise and show Center_X (the X coordinate position value in the center of circle), Center_Y (the Y coordinate position value in the center of circle), the Radius_R (radius of a circle value) of region_type for circular (circle) condition.
In addition, comprise that also demonstration region_type is polygonal (polygon) condition position_count (polygonal angle number (N1)), Pos_X (the X coordinate position value on summit), Pos_Y (the Y coordinate position value on summit).
If polygonal, will be by the interface that is linked in sequence on summit, and last coordinate figure is connected with initial coordinate figure.
In the control age bracket restriction column table in Fig. 3, operation_related_data means can be according to the supplemental data of operation definition.
According to different operating, the form of operation_related_data is as follows: promptly,
NO_OPERATION is meant does not have operation_related_data, and FILL_REGION then means and utilizes particular pixel values to fill up the interface.
[table 1]
| (operation_related_data) | bits | description |
| {fill_color} | 32bits | { RGBT} calculates pixel value |
MOSAIC_REGION is meant that picture is cut off the interface carries out the picture mosaic processing, and ZOOM_REGION then means the expansion of part ground or dwindles the interface.
[table 2]
| (operation_related_data) | bits | description |
| { | ||
| zoom_ratio_numerator | 16bits | The numerator value of zoom |
| zoom_ratio_denominator | The denominator value of zoom | |
| } |
PATTERN_REGION is meant by ad hoc fashion and fills up the interface, and MUTE is meant and weakens playing sound of audio or video.
[table 3]
| (operation_related_data) | bits | description |
| {mute_type} | 16bits | mute_type＝0 mute off |
| mute_type＝1 Video mute | ||
| mute_type＝2 Audio mute， | ||
| mute_type＝3 Audio/Video mute |
The age bracket control of developing according to this invention watches that the script of method for limiting sees Fig. 6.
Fig. 6 watches the method for limiting flow chart according to what this invention was developed into.
Parentalrate (with the benchmark of age bracket classification) at first presses in TV station when broadcast program, divide harmful scene and harmless scene (S601).
When beginning to play, metadata (MetaData) and image and sound-content to be carried out synchronization process, and outwards transmit, the value that become benchmark this moment is PCR value (S601).
Under the condition that possesses image and sound benchmark,, send improper content presentation message (S603) by metadata channel.
By the broadcast receiver age bracket is set and watches restriction benchmark (parental ratesetting) (S604), and play A/V channel (S605).
If send improper content presentation message by TV station, the application program of playing this message of control in the receiver just begins operation (Rate Control application), and the benchmark of setting in the metadata of improper content presentation message and the current configuration is compared and judges (rate_control) rate_setting_value) (S606).
According to above-mentioned judged result, carry out space management, picture mosaic processing and the Fuzzy Processing of picture, or the time is cut off the output (S607) of acoustic information.
The digit broadcasting receiver of developing according to this invention is watched the above-mentioned explanation of method for limiting, is to play the film of only watching for the age bracket more than 18 years old with TV station to illustrate.
TV station is when movie, watch that with age bracket control restriction (Parental rateControl) is that purpose is obtained PID, and where necessary, the TV station aspect will generate age bracket and watch restriction column (Parental Rate Control section), be inserted in the identical transmission code stream (transport stream).
In addition, play receiver when movie, watch restriction column (Parental Rate Control section) data if receive age bracket, just it is carried out encoding process, the comparison of restriction (rate_control) is watched in the line correlation of going forward side by side control, when defining necessary restriction and receive, play receiver and will carry out control and watch that restriction operates (rate_controloperation).
TV station is when carrying out the data decoding processing, and the project that need consider is as follows: promptly,
One, watch that at a control restriction (rate control) generates a column.
Watch the preceding 2-3 of restriction (controlstart) second from being about to begin control two,, define necessaryly when control is watched that restriction finishes (controlend) and controls during relevant that will send column repeatedly, the cycle repeatedly at this moment is in 1 second.
Three, from beginning in control watches that restriction (control start) is watched zone the restriction (control end) to finishing control, the control that also can transmit other kind is watched and is limited column (rate_control section).
Four, from beginning control watches that restriction (control start) is watched process the restriction (control end) to finishing control, also can be overlapping with control column At All Other Times section.
The information that this invention is set at broadcast reception system in advance according to the user (could watch according to level setting), specific part and all parts of picture carry out that picture mosaic is handled, blank (cut-out picture) handled or certain part is carried out Fuzzy Processing to any moment.
Claims (8)
1, a kind of digit broadcasting receiver comprises:
Decomposing video, and the inverse multiplexing device of the required column information of restriction is watched in output;
Video/audio signal is carried out the A/V encoder of encoding process;
The video memory of the picture signal that preservation is exported from the A/V encoder;
Carrying out on the image encoded in conjunction with the interface setting information of watching that restriction is required, dividing the control of picture with modular form and watch limiting module;
Watch the interface setting filter that the restricted part picture is required with the modular form division;
The image that is combined with part of module information is deciphered the video decoder of processing.
2, digit broadcasting receiver as claimed in claim 1, it is characterized in that, in PMT (Program Map Table) column, should give A/V PID (Packet IDentifier) the affiliated new code stream type of programme information registration, and, carry out outwards transmitting after the synchronization process to watching the required column information of restriction according to the PCR value.
3, a kind of method for limiting of watching of digit broadcasting receiver comprises the steps:
When beginning broadcast program, transmit the stage that age bracket is watched the required metadata of restriction with synchronized form by TV station;
Possessing on the basis that receives image and sound,, situation is improperly sent the stage of improper signal by metadata channel;
Age bracket is set watches the restriction benchmark, and when in the process of watching, receiving improper signal, the stage that compares with the benchmark of in current configuration, setting;
Comparative result needs restriction if any part, just video/audio signal is carried out the stage of part restriction.
4, method as claimed in claim 3 is characterized in that,
Metadata format is to be that processing is deciphered on the basis with personal program (Private Section) (with reference to ISO/IEC13818-1),
Begin operation (operation) time started information (sync_starttime_PTS) with AV PCR correlation with current broadcast;
The concluding time information (sync_endtime_PTS) of operation; According to imposing a condition the condition whether control operation is carried out (rate_condition);
Restriction age condition (rate_condition) value;
Restriction operation (operation) is watched in control; Carry out the interface information (region_data) of picture restriction.
5, method as claimed in claim 4, it is characterized in that, in the interface information (region_data) that forms the picture restriction, also should comprise following several structure: promptly, region_type is TopLeft_X (the X coordinate position value of upper end, left side, interface), TopLeft_Y (the Y coordinate position value of upper end, left side, interface), BottomRight_X (the X coordinate position value of bottom, right side, interface), the BottomRight_Y (the Y coordinate position value of bottom, right side, interface) of rectangle (rectangle).
6, method as claimed in claim 4, it is characterized in that interface information (region_data) lining that forms the picture restriction should comprise that also region_type is Center_X (the X coordinate position value in the center of circle), Center_Y (the Y coordinate position value in the center of circle), the Radius_R (radius of a circle value) of circular (circle) condition.
7, method as claimed in claim 4, it is characterized in that interface information (region_data) lining that forms the picture restriction should comprise that also region_type is position_count (polygonal angle number (N1)), Pos_X (the X coordinate position value on summit), the Pos_Y (the Y coordinate position value on summit) of polygonal (polygon) condition.
8, method as claimed in claim 4 is characterized in that, control watches that the required metadata of restriction should be that it should be made up of following structure according to the supplemental data (operation_related_data) of operation definition: promptly,
Fill up and form the required Pixel Information (FILL_REGION) in picture restriction interface; Whether the picture mosaic of related interfaces is handled the part expansion of (MOSAIC_REGION) and related interfaces or is dwindled relevant information (ZOOM_REGION); Fill up the information (PATTERN_REGION) of related interfaces with ad hoc fashion; Optionally cut off the required information of audio or video data (MUTE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100531717A CN1728788A (en) | 2004-07-27 | 2004-07-27 | Digital broadcast receiver, and method for restricting teleview |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100531717A CN1728788A (en) | 2004-07-27 | 2004-07-27 | Digital broadcast receiver, and method for restricting teleview |
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| Publication Number | Publication Date |
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| CN1728788A true CN1728788A (en) | 2006-02-01 |
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| CNA2004100531717A Pending CN1728788A (en) | 2004-07-27 | 2004-07-27 | Digital broadcast receiver, and method for restricting teleview |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8499323B2 (en) | 2008-04-16 | 2013-07-30 | Nvidia Corporation | Method and apparatus for outputting media content |
| US8612619B2 (en) | 2006-03-31 | 2013-12-17 | Alcatel Lucent | Method and apparatus for improved multicast streaming in wireless networks |
| CN111295708A (en) * | 2017-12-07 | 2020-06-16 | 三星电子株式会社 | Speech recognition apparatus and method of operating the same |
-
2004
- 2004-07-27 CN CNA2004100531717A patent/CN1728788A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8612619B2 (en) | 2006-03-31 | 2013-12-17 | Alcatel Lucent | Method and apparatus for improved multicast streaming in wireless networks |
| US8499323B2 (en) | 2008-04-16 | 2013-07-30 | Nvidia Corporation | Method and apparatus for outputting media content |
| CN111295708A (en) * | 2017-12-07 | 2020-06-16 | 三星电子株式会社 | Speech recognition apparatus and method of operating the same |
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