CN1486082A - Method for organizing and interpreting data broadcast content in digital television system - Google Patents
Method for organizing and interpreting data broadcast content in digital television system Download PDFInfo
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- CN1486082A CN1486082A CNA021292817A CN02129281A CN1486082A CN 1486082 A CN1486082 A CN 1486082A CN A021292817 A CNA021292817 A CN A021292817A CN 02129281 A CN02129281 A CN 02129281A CN 1486082 A CN1486082 A CN 1486082A
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Abstract
The invention is a kind of organizing and explaining method of data broadcasting content in digital TV system. It creates the description information according to the type of broadcasting data, and packages the description information and the data into data object to transmit and receive; when receiving, starts from the data flow initial position, acquires the object head of the first data object; then takes the length mark in the object head, and takes out the data behind the length mark; finally, carries the object head and data to correspondent display model to process according to the object type mark; the invention realizes to explain rich data, and provides excellent expandability.
Description
Technical field:
The present invention relates to data broadcast content tissue and means of interpretation in a kind of digital television system, be meant a kind of especially in order to the tissue of the data content that transmits by the digital television broadcasting media and the method for explanation.
Background technology:
The development of digital television techniques makes to have had very application prospects by digital television program Data transmission broadcast message.When transmitting above-mentioned data content, existing technical method mainly contains two kinds:
1, the data content that adopts HTML (Hypertext Markup Language abbreviates HTML as) tissue to be transmitted makes an explanation to the data content that receives and reproduces at receiving terminal employing built-in browser (embed browser).For example: the column and the clauses and subclauses of news are formed according to form web page, point to particular content by hyperlink.The layout of picture, text in the particular content is specified by the tag attributes of html language.Explain with the built-in browser of supporting html language.
In the above-mentioned method, adopt the Html language that the information of being transmitted is described and inaccuracy, this be because: the attribute of a lot of labels and label is not essential, and the explanation results of different interpreters has very big discrepancy; Simultaneously, in order to strengthen ability to express, html language is supported multiple different label, and most of label does not all have good effect on TV; Because the kind of label is numerous, will have suitable redundancy in the information that is encoded.And in order to support the explanation to these labels, built-in browser is all used very complicated program, for aspect arithmetic speed and the storage capacity far below the digital TV set-top box of all-purpose computer on for, use existingly to have comparatively that the browser of labyrinth is unpractical.
2, adopt private data structure organization content to add the method for specific program explanatory content, that is: column, news item and content of text are organized together, distinguished with self-defining sign.After reception, interpretive program takes out text message by distinctive mark, is shown in appointed positions.
But, the information that this method is transmitted has too simple data type, expression content is single, the overwhelming majority is a text, and display position is fixed, and the color font can not be adjusted, even the title by transmitting separately, and use big font to show that title to increase the part effect, shows also very mechanical.Minority is supported picture, also can only simply show on screen, can't realize that the mixing of picture and text shows.Simultaneously, if newly-increased data format also can produce very big influence to the structure of original interpretive program, therefore lack necessary autgmentability.
Summary of the invention:
Main purpose of the present invention is to provide data broadcast content tissue and the means of interpretation in a kind of digital television system, it is adapted to the demonstration of digital television receiving terminal to broadcast data, overcomes to use conventional browser to cause low, the slow-footed shortcoming of digital television receiving terminal efficient; Utilize the confined space and operational capability on the digital TV set-top box, explain rich data as far as possible, and good expandability is provided.
The object of the present invention is achieved like this:
The method for organizing of data broadcast content in a kind of digital television system, this method is: according to the type that is broadcasted data, set up this data description information, and this data description information together is packaged as data object together with data itself sends.
Data described here comprise text data or graph data or one of animation data or video data or its combination at least.And data description information comprises object header and the particular type of information of being made up of the total attribute information of data at least.
Total attribute information in the data description information comprises data length information, rectangular extent information and object-type information at least, the object header of data has fixing message length, and when data being encapsulated transmission, this object head row is located at the front of data; The particular type of information of data comprises at least: the color of display mode descriptor, display position information, text type, the font of text and line feed information; Data object successively continuously every arrangement, and begins with the object head when being encapsulated as data flow.
The means of interpretation of data broadcast content in a kind of digital television system which comprises at least following step:
Step 1: receiving data stream;
Step 2: receiving data stream; From this data flow section start, obtain the object head of first data object;
Step 3: obtain wherein data length sign according to this object head, take out data thereafter;
Step 4:, object head and data are delivered to corresponding display module processing jointly according to the object type sign;
Step 5: begin to handle next data object.
Above-mentioned data comprise text data or graph data or one of animation data or video data or its combination at least.And described data description information comprises object header and the particular type of information of being made up of the total attribute information of data at least.
The total attribute information of the data of data description information comprises data length information, rectangular extent information and object-type information at least, the object header of data has fixing message length, and when data being encapsulated transmission, this object head row is located at the front of data; The particular type of information of data comprises at least: the color of display mode descriptor, display position information, text type, the font of text and line feed information; And data object successively continuously every arrangement, and begins with the object head when being encapsulated as data flow.
When receiving unknown data object type, ignore this data object.
The present invention is by organizing the content of each data object in the data flow effectively, and it adapts to the demonstration of digital television receiving terminal to broadcast data, has overcome the use conventional browser and has caused low, the slow-footed shortcoming of digital television receiving terminal efficient; Utilize the confined space and operational capability on the digital TV set-top box, realized explaining the purpose of rich data as far as possible, and good expandability is provided.
Description of drawings
Fig. 1 is the data object and the internal structure schematic diagram thereof of one embodiment of the invention.
Fig. 2 is a receiving data stream of the present invention, and the flow chart that the data object is made an explanation.
Embodiment
Referring to Fig. 1, the data content that may occur in the data broadcasting mainly comprises text message, graphical information, animation information, video information or the like.In its display mode information,, also include some particular requirements that the type data content shows, for example: the color of text data, font, line feed information or the like except the positional information on screen.
Among the present invention, various types of data contents are considered to unified data object.The total attribute of all data objects can be described with the object head of regular length, and this object head comprises length information, rectangular extent information, the object-type information of data.The length of object head is fixed, and need not add the step of judgement in addition, does not have the redundancy of label information, can be so that the structure of interpretive program is more simple and direct.
In order further to reduce the redundancy of data flow, among the present invention all data objects in data flow successively continuously every arranging (specifically referring to Fig. 1).In data flow, each data object begins with the object head, is thereafter the data content of this data object, and the length of data content is described in the object head.This no spaced mode is compared to the label of HTML, has reduced the redundancy of data.
With the text data object is example: the data content of this data object comprises: the attribute information of content of text, text font, line of text information etc.; Line of text information is meant the information of line feed when the content of text of notebook data object shows in the rectangle frame of notebook data object appointment; Text font attributes then is meant the font of notebook data object when showing, information such as color.For the line of text information processing, make interpretive program can avoid the calculating of a large amount of branch's information, improved the performance of explaining.By making up a plurality of rectangle frames, font, text object that color is different, can be in the text display content of television set expressed in abundance.
For other object, data content all is file or the data code flow with specific format usually.For example: the data content of graphic data object has: the file of bitmap (bitmap) file, still image expert group coding (JPEG) etc.; The data content of video data objects then can be the code stream of mobile imagery specialists group coding (MPEG).
For the text data object, the information that needs to handle is text font and line of text information.
When need show, this data content corresponding to a kind of new data object, is added this data object then to new data type.At transmitting terminal, only need this data object be encapsulated in the data flow that will send and send according to data object method for organizing of the present invention, and in the interpre(ta)tive system of apparatus of digital television receiving, increase corresponding processing module, can show the data object that this is new, and the method for organizing of whole handling process and data need not change.
Referring to Fig. 2, the method that the present invention received and handled corresponding data object is as follows: apparatus of digital television receiving, for example digital TV set-top box is after receiving data flow, promptly, obtain the object head of first data object, by data length sign wherein from the section start of data flow, take out data thereafter, according to the data object type sign, object head and data are delivered in the corresponding display module jointly handle, and then begin to handle next object.To unsupported data object type, the present invention skips over and does not carry out handling.Said process can last till always that all data objects processing finish.
For example, referring to table 1, the information that the object head of a data object specifically can comprise has: the type information Ctype of data object, number of pages information nPage, left coordinate Ntop, go up coordinate Nleft, width Nwidth, height Nheight and data length NdataLength, wherein: by left coordinate Ntop, go up the display position that coordinate Nleft, width Nwidth, height Nheight determine this data object jointly.
Table 1
| ??Ctype | Type |
| ??nPage； | Number of pages |
| ??Ntop | Left side coordinate |
| ??Nleft | Last coordinate |
| ??Nwidth | Wide |
| ??Nheight | High |
| ??NdataLength | Data length |
For the text data object, it also comprises descriptors such as further font shown in table 2, table 3, branch; Wherein, the font descriptor has: level interval nXDistance, vertical interval nYDistance font height nWeight, color cColor, background colour cBKColor, Chinese character style type nChineseType, english font type nEnglishType etc.; Branch's descriptor has: number of characters nCharCount, number of words nWordCount, total line number nLineCount, the line number nVisibleLine that can show, content of text pString, the original position pLineInfo of every row in content of text etc.
Table 2 (font descriptor)
| ??nXDistance； | Level interval |
| ??nYDistance | Vertical interval |
| ??nWeight | Font height |
| ??cColor | Color |
| ??cBKColor | Background colour |
| ??nChineseType | The Chinese character style type |
| ??nEnglishType | The english font type |
Table 3 (branch's descriptor)
| ????NcharCount | Number of characters |
| ????NWordCount | Number of words |
| ????nLineCount | Total line number |
| ????nVisibleLine | The line number that can show |
| ????pString | Content of text |
| ????pLineInfo | The original position of every row in content of text |
Referring to Fig. 1, for graphic data object, its object head back followed by be exactly the particular content of image file.
It should be noted that at last: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has been described in detail the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or replacement to the present invention with being equal to; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (15)
1, the method for organizing of data broadcast content in a kind of digital television system is characterized in that: according to the type that is broadcasted data, set up this data description information, and this data description information together is packaged as data object together with data itself sends.
2, the method for organizing of data broadcast content in the digital television system according to claim 1 is characterized in that: described data comprise text data or graph data or one of animation data or video data or its combination at least.
3, the method for organizing of data broadcast content in the digital television system according to claim 1, it is characterized in that: described data description information comprises object header and the particular type of information of being made up of the total attribute information of data at least.
4, the method for organizing of data broadcast content in the digital television system according to claim 3, it is characterized in that: the total attribute information of described data comprises data length information, rectangular extent information and object-type information at least.
5, according to the method for organizing of data broadcast content in claim 3 or the 4 described digital television systems, it is characterized in that: the object header of described data has fixing message length, and when data being encapsulated transmission, this object head row is located at the front of data.
6, the method for organizing of data broadcast content in the digital television system according to claim 3, it is characterized in that: the particular type of information of described data comprises at least: the color of display mode descriptor, display position information, text type, the font of text and line feed information.
7, the method for organizing of data broadcast content in the digital television system according to claim 1 is characterized in that: described data object successively continuously every arrangement, and begins with the object head when being encapsulated as data flow.
8, the means of interpretation of data broadcast content in a kind of digital television system is characterized in that: which comprises at least following step:
Step 1: receiving data stream;
Step 2: receiving data stream; From this data flow section start, obtain the object head of first data object;
Step 3: obtain wherein data length sign according to this object head, take out data thereafter;
Step 4:, object head and data are delivered to corresponding display module processing jointly according to the object type sign;
Step 5: begin to handle next data object.
9, the means of interpretation of data broadcast content in the digital television system according to claim 8 is characterized in that: described data comprise text data or graph data or one of animation data or video data or its combination at least.
10, the means of interpretation of data broadcast content in the digital television system according to claim 8, it is characterized in that: described data description information comprises object header and the particular type of information of being made up of the total attribute information of data at least.
11, the means of interpretation of data broadcast content in the digital television system according to claim 10, it is characterized in that: the total attribute information of described data comprises data length information, rectangular extent information and object-type information at least.
12, according to the means of interpretation of data broadcast content in claim 10 or the 11 described digital television systems, it is characterized in that: the object header of described data has fixing message length, and when data being encapsulated transmission, this object head row is located at the front of data.
13, the means of interpretation of data broadcast content in the digital television system according to claim 10, it is characterized in that: the particular type of information of described data comprises at least: the color of display mode descriptor, display position information, text type, the font of text and line feed information.
14, the means of interpretation of data broadcast content in the digital television system according to claim 8 is characterized in that: described data object successively continuously every arrangement, and begins with the object head when being encapsulated as data flow.
15, the means of interpretation of data broadcast content in the digital television system according to claim 8 is characterized in that: when receiving unknown data object type, ignore this data object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021292817A CN1264348C (en) | 2002-09-29 | 2002-09-29 | Method for organizing and interpreting data broadcast content in digital television system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB021292817A CN1264348C (en) | 2002-09-29 | 2002-09-29 | Method for organizing and interpreting data broadcast content in digital television system |
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| Publication Number | Publication Date |
|---|---|
| CN1486082A true CN1486082A (en) | 2004-03-31 |
| CN1264348C CN1264348C (en) | 2006-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021292817A Expired - Fee Related CN1264348C (en) | 2002-09-29 | 2002-09-29 | Method for organizing and interpreting data broadcast content in digital television system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100409662C (en) * | 2006-02-14 | 2008-08-06 | 深圳创维数字技术股份有限公司 | Automatically projected file making method and playing method for the same |
| CN101867695A (en) * | 2010-05-21 | 2010-10-20 | 中山大学 | Digital television set top box based on browser |
| CN109874055A (en) * | 2019-03-12 | 2019-06-11 | 深圳市天威视讯股份有限公司 | A kind of collecting method and system suitable for Intelligent set top box |
-
2002
- 2002-09-29 CN CNB021292817A patent/CN1264348C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100409662C (en) * | 2006-02-14 | 2008-08-06 | 深圳创维数字技术股份有限公司 | Automatically projected file making method and playing method for the same |
| CN101867695A (en) * | 2010-05-21 | 2010-10-20 | 中山大学 | Digital television set top box based on browser |
| CN109874055A (en) * | 2019-03-12 | 2019-06-11 | 深圳市天威视讯股份有限公司 | A kind of collecting method and system suitable for Intelligent set top box |
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| Publication number | Publication date |
|---|---|
| CN1264348C (en) | 2006-07-12 |
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