WO2015027913A1 - Procédé, dispositif et boîtier décodeur de traitement de flux de données d'image/texte - Google Patents

Procédé, dispositif et boîtier décodeur de traitement de flux de données d'image/texte Download PDF

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Publication number
WO2015027913A1
WO2015027913A1 PCT/CN2014/085282 CN2014085282W WO2015027913A1 WO 2015027913 A1 WO2015027913 A1 WO 2015027913A1 CN 2014085282 W CN2014085282 W CN 2014085282W WO 2015027913 A1 WO2015027913 A1 WO 2015027913A1
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WO
WIPO (PCT)
Prior art keywords
data stream
graphic
display
information
data
Prior art date
Application number
PCT/CN2014/085282
Other languages
English (en)
Chinese (zh)
Inventor
陈业安
Original Assignee
深圳市九洲电器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市九洲电器有限公司 filed Critical 深圳市九洲电器有限公司
Publication of WO2015027913A1 publication Critical patent/WO2015027913A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44012—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/488—Data services, e.g. news ticker
    • H04N21/4888—Data services, e.g. news ticker for displaying teletext characters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8543—Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, an apparatus, and a set top box for processing a teletext data stream.
  • the embodiment of the present invention provides a method, a device, and a set top box for processing a graphic data stream.
  • the technical solution is as follows:
  • the present invention provides a method for processing a teletext data stream, the method comprising:
  • the graphic data stream to be displayed is processed to obtain a displayed graphic, and displayed according to a display mode selected by the user.
  • the present invention provides a processing device for a teletext data stream, the device comprising:
  • An extracting module configured to: when the first trigger is generated, extract the directory information from the source to display the directory information in an interface display manner;
  • An obtaining module configured to acquire, according to a request of the user for the directory information, a graphic data stream corresponding to the requested directory information from the source and store the data stream in the buffer;
  • a parsing module configured to parse the teletext data stream in the buffer to obtain a teletext data stream to be displayed
  • a display module configured to process the graphic data stream to be displayed to obtain a displayed content graphic, and display the display according to a display mode selected by the user.
  • the invention provides a set top box comprising the processing device.
  • the image data stream is predefined into an XML format, and the predefined data is parsed and displayed, so that an image display requirement can be provided without adding hardware devices.
  • FIG. 1 is a flowchart of a method for processing a data stream according to an embodiment of the present invention
  • Figure 2 is a detailed flow chart of step 102 of Figure 1;
  • FIG 3 is a detailed flow chart of step 104 of Figure 1;
  • Figure 4 is a detailed flow chart of step 105 of Figure 1;
  • FIG. 5 is a detailed flow chart of step 402 of Figure 4.
  • FIG. 6 is a structural diagram of a frame of a processing device for a teletext data stream according to another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of the parsing module 604.
  • Extensible Markup Language (Extensible Markup Language, XML), a markup language used to mark electronic files to make them structured. It can be used to mark data and define data types. It is a source language that allows users to define their own markup language.
  • the first embodiment of the present invention provides a method for processing a data stream, as shown in FIG. 1 , the method process includes:
  • Step 101 XML predefining the format of the teletext stream.
  • the format of the graphic data stream is predefined according to a preset format, and specifically, the format of the graphic data stream is defined as an XML format: including pre-definition of the text by the label and the image by the label.
  • the XML format is predefined. XML pre-definition of text, including: text control tags, category name tags, article title tags, article body tags, text color tags, text mode tags, font size tags, font style tags, and font type tags.
  • Pre-defined XML for images including: insert image tags, image alignment tags, image locations, and image size tags.
  • Table 1 text label control example table Features Example classification name ⁇ category>Sample Category ⁇ /category> Article title ⁇ title>Sample Title ⁇ /title> Article body ⁇ body>Sample text ⁇ /body>
  • Step 102 When the first trigger is generated, extracting the directory information from the source to display the directory information in an interface display manner.
  • the first trigger refers to a trigger generated by the user for starting a display in the set top box to display the text.
  • the source refers to the source of the teletext stream, for example, it can be a code stream, the Internet, and a memory.
  • the directory information refers to a category of graphic data to be displayed, and title data under each category.
  • Step 103 Acquire a graphic data stream corresponding to the requested directory information from the source according to the user's request for the directory information, and store the data stream in the buffer.
  • the request of the user for the directory information refers to a request that the user selects to acquire the graphic data according to the requirement.
  • the buffer is used to store the acquired teletext data stream corresponding to the user request.
  • Step 104 Parse the graphic data stream in the buffer to obtain a graphic data stream to be displayed.
  • the graphic data stream to be displayed includes: graphic data, audio data, and control information, where the graphic data refers to graphic data to be displayed, and the audio data refers to sound accompanying sound reading.
  • the control information refers to information that controls the display format of the graphic data stream, such as font size, its mode, foreground color and background color, and presence or absence of images.
  • Step 105 Process the graphic data stream to be displayed to obtain a displayed graphic, and display according to a display mode selected by the user.
  • the graphic data stream is predefined into an XML format, and the predefined data is parsed and displayed, so that an image display requirement can be provided without adding hardware devices.
  • step 101 specifically includes:
  • the first trigger When the first trigger is generated, determining the type of the first trigger, determining a source type according to the type of the first trigger, and extracting the directory information from the source corresponding to the source type through the set-top box receiving interface, displaying the Directory information.
  • the first trigger refers to a trigger generated by a user turning on a reader; the type of the first trigger is used to determine the source type, and the source type includes but is not limited to the following three types: a code stream, an Internet, and Memory.
  • step 103 specifically includes:
  • Step 201 Determine a category of information selected by the user according to the request of the user for the directory information.
  • the information category refers to a classification according to the application of the information, such as classifying the information into categories such as news, entertainment, science and education, and sports.
  • Step 202 Acquire, by the source, a data stream corresponding to the information category.
  • the source includes: a code stream, an Internet, and a memory.
  • a code stream a code stream
  • an Internet a code stream
  • a memory a memory that stores instructions for executing code.
  • a PID of the audio code stream corresponding to the text content is given in the node of the audio signal source, and the XML parser parses the PID and sends it to the sound processing module, and the sound processing module sends the PID.
  • a demultiplexer of the set top box the demultiplexer uses the PID to filter the specified audio data and save it to the audio data buffer;
  • a link of the audio media stream corresponding to the text content is given in the node of the audio signal source, and the XML parser parses the link and sends it to the sound processing module, and the sound processing module combines the A network request is sent to the server.
  • the server After responding to the request, the server sends the requested audio media stream data to the set-top box through the network, and the set-top box receives the data and saves it to the audio data buffer.
  • a starting address and a file size of the audio media stream file corresponding to the text content in the memory are given in the node of the audio signal source, and the XML parser parses the address and the file size value and sends the address To the sound processing module, the sound processing module will read the audio media stream file of the specified file size starting from the address in the memory to the audio data buffer.
  • Step 203 Save the acquired graphic data stream to the buffer.
  • step 104 specifically includes:
  • Step 301 Read a teletext data stream from the buffer, and generate a large class node tree of the information category according to the teletext data stream;
  • generating a large class node tree of the information category includes:
  • a large class node tree has multiple nodes.
  • Step 302 Locating user-selected node data from the large class node tree according to the user's selection.
  • the user's choice is to pay attention to the football match information, since the big category to which the football match information belongs is a sports category. Then, the sports large-scale node tree of data production is imported from the sports category, and the specific node data of the football match information is located from the sports tree node tree.
  • Step 303 Parse the node data according to a preset format to obtain a graphic data stream to be displayed, and block the graphic data stream to be displayed, and save the data stream to a corresponding memory.
  • step 104 specifically includes:
  • Step 401 Read control information from the graphic data stream to be displayed, and generate page parameter information according to the control information.
  • Step 402 Read valid graphic data from the graphic data stream to be displayed, and combine the page parameter information to arrange the valid graphic data to obtain displayed graphic programming information, and write the information into the display buffer. Set the display processing completion flag;
  • the effective graphic data is combined with the page parameter information to obtain the displayed graphic layout information.
  • the page parameter information is combined with the page parameter information to obtain the displayed graphic layout information.
  • Step 501 Determine whether the picture data stream contains picture data, if the picture data is not included, step 502 is performed, if the picture data is included, step 503 is performed;
  • Step 502 splicing all the small paragraphs of the text in the valid graphic data into one large paragraph
  • Step 503 Determine whether the start data of the valid graphic data is picture data, and if yes, perform steps 504; otherwise, step 507 is performed;
  • Step 504 Determine whether the end data of the valid graphic data is picture data, and if yes, perform steps 505; otherwise, step 506 is performed;
  • Step 505 The value of the number of pictures is used as a large number of paragraphs of the text
  • Step 506 The value of the number of pictures is reduced by one as the number of large paragraphs of the text
  • Step 507 Determine whether the end data of the valid graphic data is picture data, and if yes, perform steps 508; otherwise, step 509 is performed;
  • Step 508 The value of the number of pictures is used as a large number of paragraphs of the text
  • Step 509 The value obtained by adding the number of pictures is used as the large number of paragraphs of the text.
  • Base64 is one of the most common encoding methods for transmitting 8Bit byte code on the network. It can be used as the transmission code of e-mail. It can also be used to represent, transmit and store some binary data, usually in the case of processing text data. MIME email and storing complex data in XML.
  • Step 403 Determine the display mode selected by the user, when the display mode is the graphic display mode, step 404 is performed; when the display mode is the graphic audio display mode, step 405 is performed;
  • Step 404 Copy data of the display buffer to the display unit, and output through a screen.
  • Step 405 Read audio data from the display data stream, calculate a time frequency according to the audio data, calculate an output data frequency according to the time factor, and compare the audio data with the displayed data according to the output data frequency.
  • the graphic arrangement information is synchronized, the synchronized graphic arrangement information is copied to the display unit, and output through the screen, and the audio data is decoded according to the output data frequency and output through the speaker.
  • the buffer data and the node tree memory are released after parsing.
  • the graphic data stream is predefined into an XML format, and the predefined data is parsed and displayed, so that an image display requirement can be provided without adding hardware devices.
  • the embodiment provides a processing device for a teletext data stream.
  • the device includes:
  • a predefined module 601, configured to perform XML pre-definition on a format of the graphic data stream
  • the extracting module 602 is configured to: when the first trigger is generated, extract the directory information from the source to display the directory information in an interface display manner;
  • the extracting module 602 is specifically configured to: when the first trigger is generated, the first trigger refers to a trigger generated by the user turning on the reader;
  • Determining the type of the first trigger determining a source type according to the type of the first trigger, and extracting the directory information from the corresponding source corresponding to the source type by the set top box receiving interface to display the directory information in an interface display manner.
  • the obtaining module 603 is configured to obtain, from the source, the graphic data stream corresponding to the requested directory information according to the user's request for the directory information, and store the data stream in the buffer;
  • the obtaining module 603 is specifically configured to determine, according to a user request for the directory information, the information category selected by the user, obtain the graphic data stream corresponding to the information category by using the source, and save the acquired data stream to the Buffer.
  • the parsing module 604 is configured to parse the teletext data stream in the buffer to obtain a teletext data stream to be displayed;
  • the parsing module 604 specifically includes:
  • the reading unit 701 is configured to read a teletext data stream from the buffer, and generate a large class node tree with the information category according to the teletext data stream;
  • the reading unit 701 is further configured to: read a teletext data stream from the buffer, and perform verification on the data stream, and when the verification passes, according to the user's selection, from the large class node.
  • the node data selected by the user is located in the tree.
  • the positioning unit 702 is configured to locate the node data selected by the user from the large class node tree according to the user's selection;
  • the processing unit 703 is configured to parse the node data according to a preset format to obtain a graphic data stream to be displayed, and block the graphic data stream to be displayed, and save the data stream to a corresponding memory.
  • the display module 605 is configured to process the graphic data stream to be displayed to obtain a displayed graphic, and display the display according to a display mode selected by the user.
  • the display module 605 is specifically configured to:
  • the display mode is the graphic display mode
  • the data of the display buffer is copied to the display unit and output through the screen.
  • the audio data is decoded and output through the speaker.
  • the graphic data stream is predefined into an XML format, and the predefined data is parsed and displayed, so that an image display requirement can be provided without adding hardware devices.
  • An embodiment of the present invention also provides a set top box including the above device.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • User Interface Of Digital Computer (AREA)

Abstract

L'invention concerne un procédé, un dispositif et un boîtier décodeur de traitement de flux de données d'image/texte. Le procédé consiste à : prédéfinir un format d'un flux de données d'image/texte dans la source d'informations dans un format XML; lorsqu'un premier élément déclencheur se produit, extraire des informations de catalogue à partir de la source d'informations, et afficher les informations de catalogue sur une interface; selon une requête d'utilisateur demandant des informations de catalogue, obtenir, à partir de la source d'informations, un flux de données d'image/texte correspondant aux informations de catalogue demandées, et stocker le flux de données d'image/texte dans une zone tampon; analyser le flux de données d'image/texte dans la zone tampon pour acquérir le flux de données d'image/texte à afficher; traiter le flux de données d'image/texte à afficher pour acquérir l'image/texte, et afficher l'image/texte dans un mode d'affichage sectionné par un utilisateur. Le dispositif comprend : un module de prédéfinition, un module d'extraction, un module d'acquisition, un module d'analyse et un module d'affichage. Le boîtier décodeur comprend le dispositif de traitement. La présente invention prédéfinit le format d'un flux de données d'image/texte dans un format XML, et analyse, traite et affiche les données prédéfinies, réalisant l'affichage de combinaison image/texte.
PCT/CN2014/085282 2013-08-30 2014-08-27 Procédé, dispositif et boîtier décodeur de traitement de flux de données d'image/texte WO2015027913A1 (fr)

Applications Claiming Priority (2)

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CN201310390496.3 2013-08-30
CN201310390496.3A CN103442275B (zh) 2013-08-30 2013-08-30 一种图文数据流的处理方法、装置及机顶盒

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CN103442275B (zh) * 2013-08-30 2017-04-12 深圳市九洲电器有限公司 一种图文数据流的处理方法、装置及机顶盒
CN111385618B (zh) * 2018-12-29 2022-01-04 深圳Tcl新技术有限公司 一种信源列表显示方法、Android电视及存储介质

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