WO2017117731A1 - 在数字电视广播中传输特定数据的方法、装置和接收终端 - Google Patents

在数字电视广播中传输特定数据的方法、装置和接收终端 Download PDF

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Publication number
WO2017117731A1
WO2017117731A1 PCT/CN2016/070205 CN2016070205W WO2017117731A1 WO 2017117731 A1 WO2017117731 A1 WO 2017117731A1 CN 2016070205 W CN2016070205 W CN 2016070205W WO 2017117731 A1 WO2017117731 A1 WO 2017117731A1
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Prior art keywords
specific data
data
service information
digital television
module
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PCT/CN2016/070205
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English (en)
French (fr)
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傅静静
蔡振华
谢晓辉
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北京司响无限文化传媒有限公司
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Priority to PCT/CN2016/070205 priority Critical patent/WO2017117731A1/zh
Publication of WO2017117731A1 publication Critical patent/WO2017117731A1/zh

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    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams

Definitions

  • the present invention generally relates to the field of digital television broadcasting, and more particularly to a method, apparatus and receiving terminal for transmitting specific data to a user during playback of a digital television broadcast program.
  • a program provider can insert service information (SI) in a transport stream (TS) before the television program is broadcast to indicate program-related information.
  • SI service information
  • Information such as program list, broadcast time and other parameters.
  • the digital set-top box extracts the SI information from the received TS streams, the SI information is processed, and the program list and the broadcast parameters provided by the program provider are extracted, and the electronic program guide (EPG, Electronic Program) is used.
  • EPG Electronic Program
  • the integrated receiving decoder (IRD) in the set-top box performs channel tuning according to the program and program specific information (PSI, Program Specific Information) selected by the user, so that the user can conveniently and quickly I saw my favorite digital TV show.
  • PSI Program Specific Information
  • the SI information in the TS stream is still limited to carrying information directly related to program playback such as playback parameters, and is not effectively utilized and fully expanded.
  • some information related to the program that may be of interest to the user such as clothing information worn by the actor in the program, is not effectively delivered to the user.
  • the manner of presentation and the manner of transmission to the user are not reasonable, and the user cannot selectively obtain some information related to the program while watching the program, or is watching the program.
  • the transmission is transmitted to the user some information that the program provider/operator wishes to deliver.
  • the data transmission mode and presentation mode need to be improved.
  • the present invention provides a scheme for efficiently transmitting data by using a digital television system, and transmitting specific data to a user during playback of a digital television program.
  • the solution provided by the present invention basically does not change the existing digital television system, and adopts A new way of data transmission to achieve effective output of relevant information, not only make full use of existing digital TV system resources, but also does not affect the user's perception of TV programs.
  • a method of transmitting specific data in a digital television broadcast includes:
  • Parsing specific data in the service information data the specific data being provided by a program provider/service operator, and pre-encoded in the service information data according to a format of the service information data;
  • the specific data is code modulated and the coded modulated signal is broadcast in a wireless communication manner.
  • the method further includes:
  • the service information data encoded with the index number is multiplexed with the data television broadcast program to be played to form a transport stream.
  • the method further includes:
  • the encoding and modulating the specific data includes:
  • the specific data is encoded and modulated into a wireless signal using a modulation scheme of QPSK, FSK, and/or QAM.
  • the wireless communication mode is one of the following communication modes: WiFi, LED optical communication, Infrared, acoustic communication.
  • an apparatus for transmitting specific data in a digital television broadcast includes:
  • An EPG application module configured to control the demodulation decoding module to demodulate and decode the received television signal to obtain a transport stream, and control the service information data extracting module to extract the service information data from the transport stream;
  • a specific data parsing module configured to parse specific data from the service information data, wherein the specific data is provided by a program provider/service operator, and is pre-coded in the service information data according to a format of the service information data.
  • a transmitting module for modulating specific data and broadcasting the modulated specific data in a wireless communication manner.
  • the transmitting module encodes and modulates the specific data into a wireless signal by using a modulation scheme of QPSK, FSK, and/or QAM.
  • the wireless communication mode adopted by the transmitting module is one of the following communication modes: WiFi, LED optical communication, infrared, and acoustic communication.
  • the present invention further provides a terminal for receiving specific data transmitted in a digital television broadcast, including:
  • Receiving a demodulation module for receiving a wireless signal containing specific data broadcasted by wireless communication, and demodulating and outputting specific data in the wireless signal, wherein the specific data is a program provider/business operation Provided and pre-coded in service information data multiplexed with the transport stream of the digital television broadcast;
  • a specific data application module configured to present specific data output by the receiving demodulation module in response to the trigger signal.
  • the terminal can be a smartphone, a tablet, a personal computer or a laptop.
  • a new user-driven data information transmission method is provided in a digital television broadcasting system, and a digital television broadcasting system is effectively used to play a television signal based on substantially no modification of the existing digital television broadcasting system.
  • the transport stream in the process to transmit information, and And in a reasonable and comfortable way, the user can receive the data without affecting the user's perception.
  • FIG. 1 is a schematic block diagram of a transmitting end in a digital television broadcasting system.
  • Figure 2 is a flow chart of the processing at the transmitting end.
  • FIG. 3 is a schematic block diagram of a digital set top box at the receiving end of a digital television broadcasting system.
  • FIG. 4 is a process flow diagram of a digital set top box.
  • Figure 5 is a schematic block diagram of a user terminal at a receiving end in a digital television broadcasting system.
  • FIG. 6 is a flowchart of processing of a user terminal.
  • the object of the present invention is to provide a new user-driven data information transmission method in a digital television broadcasting system, so that the SI information in the TS stream of the digital television program can be fully and effectively utilized, and the data is put in a reasonable and comfortable manner. Information is presented to the user.
  • the technical solution of the present invention is divided into processing on the transmitting side and processing on the receiving side to describe them separately.
  • FIG. 1 and 2 show schematic block diagrams and processing procedures of the transmitting end side, respectively.
  • the transmitting end side of the digital television broadcasting system also referred to as a digital television front end, includes a playback control system 101, an electronic program guide (EPG) server module 102, a multiplexer 103, and a code modulation module 104.
  • EPG electronic program guide
  • the playback control system 101 is the core of the transmitting end of the digital television broadcasting system, and controls the playback of the television program as a whole.
  • the electronic program guide (EPG) server module 102 Under the control of the playback control system 101, the electronic program guide (EPG) server module 102 generates SI information, for example, an electronic program listing including a program listing, playback parameters, and the like.
  • SI information for example, an electronic program listing including a program listing, playback parameters, and the like.
  • the EPG server module 102 also generates the specific data provided by the program provider and/or the service operator according to the SI data format in addition to the SI information such as the program list and the play parameters related to the program play.
  • the code is in the SI data. Therefore, the SI information generated here includes, in addition to the information currently associated with program playback, specific data provided by the program provider and/or service operator.
  • the specific data refers to any data that the program provider and/or the service operator wishes to transmit to the user during the broadcast of the television program, including but not limited to: data related to the time of the program play, program preview, program background introduction and the like. Information, advertising information related to the program scene, website link code, content index, coupon code, and the like. Different types of specific data may be encoded differently depending on the specific application development of the program provider and/or service operator and the applied hardware and software environment. For example, a service operator may wish to present a coupon in a picture format to a user.
  • the coupon of the picture format can be directly encoded into the format of the SI information and sent together with the SI information; In this case, when receiving on the receiving side, the coupon of the picture format is also directly presented. It is also possible to set a database, store specific data, and assign and/or assign a unique index number to each specific data.
  • the index number of the specific data is encoded into SI information, transmitted together with the SI information, and decoded at the time of reception. Obtain an index number and find the corresponding specific data in the database based on the index number.
  • the information/specific data that the program provider and/or service operator wishes to transmit to the user is relatively large, relatively large, or inconvenient to present directly on the receiving side.
  • the program provider and/or service operator wishes to present to the user a website link
  • the website URL is stored in a database and assigned and/or assigned a unique index number, and then the index number is encoded into SI information.
  • an index number is obtained, and the corresponding web address can be found in the database according to the index number.
  • the multiplexer 103 multiplexes the audio stream, the video stream and the SI information of the television program to form a composite MPEG-2 TS stream, wherein the multiplexer 103 carries program specific information (PSI)/service information (SI) Insert the data interface.
  • PSI program specific information
  • SI service information
  • the code modulation module 104 encodes and modulates the MPEG-2 TS stream into a television signal suitable for transmission.
  • TV signals are transmitted to thousands of households through transmission channels.
  • the transmission channels include, but are not limited to, a coaxial cable, a satellite microwave channel, a terrestrial microwave channel, and the like.
  • step S201 specific data is provided, which is provided by the program provider and/or the service operator, and is any data that the program provider and/or the service operator wishes to transmit to the user during the broadcast of the television program.
  • data related to program play time program preview, program background introduction, etc.
  • advertisement information related to the program scene website link code, content index, coupon code, and the like.
  • step S202 the specific data is encoded into a specific format, in this example, in order to be incorporated into the MPEG-2 TS stream as a service information SI, the specificity provided by the program provider and/or the service operator
  • the data is encoded into the format of the SI data.
  • specific data may be encoded according to specific application development of the program provider and/or the service provider and the applied hardware and software environment.
  • specific data may be directly encoded into SI information.
  • the index of the corresponding specific data can also be encoded into SI information by setting a database to store specific data.
  • step S203 the encoded specific data is multiplexed into the television program to be played;
  • the multiplexer with the PSI/SI insertion data interface is in accordance with industry specifications (for example, in the present In the embodiment, MPEG-2) multiplexes SI information (including encoded specific data) into a data stream of a program to be played to form an MPEG-2 TS stream.
  • step S204 the code modulates and transmits the MPEG-2 TS stream.
  • the MPEG-2 TS is subjected to corresponding encoding and modulation by the coded modulation module to form a television signal suitable for transmission and transmitted through the transmission channel.
  • the receiving end side of the digital television includes a digital set top box and a user terminal, which are described with reference to FIGS. 3, 4, and 5 and 6, respectively.
  • Fig. 3 shows a schematic block diagram of a digital set top box on the receiving end side.
  • Figure 4 shows the processing of a digital set top box.
  • the digital set top box includes a demodulation decoding module 301 and an EPG application module. 302.
  • the demodulation decoding module 301 demodulates and decodes the television signal received through the transmission channel to obtain an MPEG-2 TS stream.
  • the MPEG-2 TS stream includes both a video stream of the television program to be played, an audio stream, and SI information multiplexed into the data stream of the television program before the program is played, and thus also includes the program provider and/or service. Specific data provided by the operator.
  • the SI data extraction module 303 is configured to extract SI data information from the demodulated decoded MPEG-2 TS stream.
  • the specific data parsing module 304 is configured to parse specific data from the extracted SI data.
  • the transmitting module 305 is configured to modulate specific data and broadcast the modulated specific data in a wireless communication manner.
  • the wireless communication method may be any wireless communication method such as WiFi, LED optical communication, infrared communication, acoustic wave communication, or the like. Matching, if the WiFi method is adopted, the transmitting module modulates the specific data into a WiFi signal to be broadcasted; if the infrared communication method is adopted, the transmitting module modulates the specific data into an infrared signal to broadcast; if the method of sound wave communication is adopted
  • the transmitting module can modulate the specific data into digital audio signals of a certain frequency band and broadcast them through an acoustic transducer (including but not limited to an electromagnetic speaker).
  • step S401 a television signal transmitted through the transmission channel is received.
  • step S402 the received television signal is demodulated and decoded, and an MPEG-2 TS stream is output.
  • step S403 the SI information in the MPEG-2 TS stream is extracted, and the SI information includes the usual SI information including the program list and the play parameters required by the electronic program guide, and the program provider and/or the service provider. The specific data that is desired to be transmitted to the user during the playback of the program.
  • the SI information is parsed to acquire specific data.
  • the specific data is modulated and broadcasted in a wireless communication manner.
  • the wireless communication method may be any wireless communication method such as WiFi, LED optical communication, infrared communication, acoustic wave communication, or the like.
  • the transmitting module 305 is performing the above steps.
  • the specific data may be directly modulated into a wireless signal, or the unique index number of the specific data may be encoded into a corresponding wireless signal by setting a database to store the specific data.
  • Fig. 5 is a schematic block diagram showing a user terminal on the receiving side in the digital television broadcasting system.
  • Figure 6 shows the processing thereof.
  • the user terminal includes a receiving demodulation module 501 and a specific data application module 502.
  • the user terminal may be any smart terminal device with certain computing power, such as a smart phone, a palmtop computer, a personal computer, a tablet computer, a notebook computer, and the like.
  • the receiving demodulation module 501 is configured to receive a wireless signal containing specific data broadcast by the digital set top box by wireless communication, and demodulate and output specific data in the wireless signal.
  • the receiving mode used by the receiving demodulation module 501 matches the manner in which the digital set top box broadcasts specific data. That is, the receiving demodulation module 501 supports the wireless communication mode of the digital set top box. For example, if the transmitting module of the digital set top box transmits the WiFi signal by using the WiFi method, the receiving and demodulating module 501 of the user terminal adopts the matching wireless signal receiving module to receive the WiFi signal; if the transmitting module of the digital set top box adopts the method of sound wave communication, Then, the receiving module 501 of the user terminal may be a microphone for receiving and demodulating the acoustic wave signal and outputting specific data.
  • the specific data application module 502 is configured to process the specific data output by the receiving demodulation module 501 into data available for presentation by the user terminal in response to the trigger signal. For example, if the specific data is offer information in an image format, the specific data application module 502 presents the picture on the display screen of the user terminal; if the output of the receive demodulation module 501 is an index, the specific data application module 502 will According to the index, the information corresponding to the index is searched in the database, for example, a website link, and the link is presented to the user terminal, and the user can further access the website by clicking the link.
  • the trigger signal refers to the active trigger of the user, including but not limited to, launching the application by pressing a switch button, a voice command input, and a gesture command input.
  • the receiving demodulation module 501 can be in a closed state.
  • the specific data application module 502 may be in a closed state, such that even if the receiving demodulation module 501 is turned on and demodulates specific data, the specific data application module 502 is in a closed state, and does not do further The processing or response of the step, but only the next step in response to the user's trigger when needed.
  • step S601 a wireless signal broadcast by the digital set top box is received.
  • the wireless signal may be a WiFi signal, an infrared signal, an optical signal, or an acoustic signal.
  • the received wireless signal is demodulated to obtain specific data.
  • step S603 specific data is triggered and presented as needed.
  • the specific data can also be directly used in the web browser in step S604 to complete the purchase and reservation.
  • the website link selling the clothing is stored in the database, and a unique index number or mark is assigned and/or specified.
  • the index number is encoded into SI information.
  • the multiplexer multiplexes the SI information with the TS stream of the movie in chronological order to form a composite TS stream.
  • the composite TS is code modulated to form a television signal that is broadcast over the transmission channel.
  • the user turns on the TV and the set top box.
  • the set top box receives the television signal and demodulates and decodes to obtain the TS stream of the movie. Further, the index number of the website link as the specific data is further analyzed.
  • the encoded index number is encoded by modulation methods such as Quadrature Phase Shift Keying (QPSK), Frequency Shift Keying (FSK), and/or Quadrature Amplitude Modulation (QAM). Acoustic signals modulated into 18kHz-20kHz are transmitted through an electromagnetic speaker external to the set-top box.
  • modulation methods such as Quadrature Phase Shift Keying (QPSK), Frequency Shift Keying (FSK), and/or Quadrature Amplitude Modulation (QAM).
  • QPSK Quadrature Phase Shift Keying
  • FSK Frequency Shift Keying
  • QAM Quadrature Amplitude Modulation
  • the specific data application module for example, a client application
  • the user terminal for example, a smartphone
  • the microphone receives the sound wave signal, and demodulates the index number, and searches the database for the specific data corresponding to the index number, that is, sells the URL, and further, the specific number
  • the application module the website is directly used for the web browser, and the user can browse the webpage on the smart phone, and the reservation and/or purchase can be further completed according to the content provided by the webpage.
  • the solution of the present invention is a user-led data information transmission method, and effectively utilizes the digital television broadcasting system in the process of playing television signals on the basis of substantially not modifying the existing digital television broadcasting system.
  • the transport stream transports the information and enables the user to receive the data in a reasonable and comfortable manner without affecting the user's perception.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

本发明涉及在数字电视广播节目的播放过程中向用户传输特定数据的方法、装置和接收终端。该方法包括：从数字电视广播节目的传送流中提取服务信息数据；解析出所述服务信息数据中的特定数据，所述特定数据是节目提供商/业务运营商提供的，并按照服务信息数据的格式预先编码在所述服务信息数据中；以及对所述特定数据进行编码调制并以无线通信方式对编码调制后的信号进行广播。本发明提供的方案基本上不改动现有的数字电视系统，采用一种全新的数据传输方式实现相关信息的有效输出，既充分利用现有的数字电视系统资源，又不影响用户对电视节目的观感。

Description

在数字电视广播中传输特定数据的方法、装置和接收终端 技术领域
本发明总地涉及数字电视广播领域，具体地说，涉及一种在数字电视广播节目的播放过程中向用户传输特定数据的方法、装置和接收终端。
背景技术
在当前的数字电视广播系统中，根据业界标准，节目提供商可以在电视节目播出之前在传送流(TS，Transport Streams)中插入服务信息(SI，Service Information)，用以表示与节目相关的信息，例如节目列表、播出时间等参数。在用户端，数字机顶盒从接收到的各TS流中提取到SI信息后，对SI信息进行处理，提取出节目提供商提供的节目列表和播出参数等，借助电子节目指南(EPG，Electronic Program Guide)以直观的形式显示给数字电视的用户，再由机顶盒中的综合接收解码器(IRD)根据用户选择的节目和节目特殊信息(PSI，Program Specific Information)进行频道调谐，使用户可以方便快捷地看到自己喜爱的数字电视节目。
随着数字电视系统的迅猛发展和普及，数字机顶盒的应用越来越广泛，其功能也在逐渐增加。然而，TS流中的SI信息仍然局限于携带播放参数等与节目播放直接相关的信息，并没有得到有效的利用和充分扩展。例如，与节目相关的、用户可能感兴趣的一些信息，诸如节目中演员穿戴的服饰信息等，没能有效地传递给用户。
而且，数字机顶盒对SI信息进行提取和处理后，其呈现方式和传输给用户的方式不尽合理，无法在观看节目的同时让用户选择性地获取一些与节目相关的信息，或者是在观看节目的同时实现传输给用户一些节目提供商/运营商希望传递的信息。
也就是说，在当前数字电视系统中，数据的传输方式和呈现方式都有待提高。
发明内容
有鉴于此，本发明提供一种利用数字电视系统有效传输数据的方案，在数字电视节目的播放过程中向用户传输特定数据，本发明提供的方案基本上不改动现有的数字电视系统，采用一种全新的数据传输方式实现相关信息的有效输出，既充分利用现有的数字电视系统资源，又不影响用户对电视节目的观感。
具体地，根据本发明的一方面，一种在数字电视广播中传输特定数据的方法，包括：
从数字电视广播节目的传输流中提取服务信息数据；
解析出所述服务信息数据中的特定数据，所述特定数据是节目提供商/业务运营商提供的，并按照服务信息数据的格式预先编码在所述服务信息数据中；以及
对所述特定数据进行编码调制并以无线通信方式对编码调制后的信号进行广播。
进一步地，在提取服务信息数据之前，该方法进一步包括：
在数据库中存储特定数据，并给特定数据分配唯一索引号；
将所述索引号编码在所述服务信息数据中；以及
将编码有索引号的服务信息数据与将要播放的数据电视广播节目复用在一起，形成传输流。
并且，所述方法进一步包括：
接收并解调广播的信号，以获得特定数据；
呈现所述特定数据。
其中，对所述特定数据进行编码调制包括：
采用QPSK、FSK和/或QAM的调制方式将所述特定数据编码调制成无线信号。
其中，所述无线通信方式是下列通信方式之一：WiFi、LED光通信、 红外线、声波通信。
根据本发明的另一方面，一种在数字电视广播中传输特定数据的装置包括：
EPG应用程序模块，用于控制解调解码模块将接收到的电视信号解调、解码，以获得传输流，并控制服务信息数据提取模块从传输流中提取服务信息数据；
特定数据解析模块，用于从服务信息数据中解析出特定数据，其中，所述特定数据是节目提供商/业务运营商提供的，并按照服务信息数据的格式预先编码在所述服务信息数据中；
发射模块，用于对特定数据进行调制并以无线通信方式广播调制后的特定数据。
所述发射模块采用QPSK、FSK和/或QAM的调制方式将所述特定数据编码调制成无线信号。所述发射模块采用的无线通信方式是下列通信方式之一：WiFi、LED光通信、红外线、声波通信。
进一步地，本发明还提供一种接收数字电视广播中传输的特定数据的终端，包括：
接收解调模块，用于接收通过无线通信方式广播的包含有特定数据的无线信号，并将所述无线信号中的特定数据解调和输出，其中，所述特定数据是节目提供商/业务运营商提供的，并预先编码在与数字电视广播的传输流复用在一起的服务信息数据中；以及
特定数据应用模块，用于响应于触发信号呈现所述接收解调模块所输出的特定数据。
所述终端可以是智能手机、平板电脑、个人计算机或笔记本电脑。
根据本发明，在数字电视广播系统中提供一种全新的由用户主导的数据信息传输方式，在基本上不改动现有数字电视广播系统的基础上，有效地利用数字电视广播系统在播放电视信号过程中的传输流来传输信息，并 且以合理、舒适的方式使用户可以接收到数据，又不影响用户的观感。
附图说明
图1是数字电视广播系统中发射端的示意性框图。
图2是发射端的处理流程图。
图3是数字电视广播系统中接收端的数字机顶盒的示意性框图。
图4是数字机顶盒的处理流程图。
图5是数字电视广播系统中接收端的用户终端的示意性框图。
图6是用户终端的处理流程图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面结合附图对本发明的具体实施方式进行详细说明。附图中所示和根据附图描述的本发明的实施方式仅仅是示例性的，并且本发明并不限于这些实施方式。
需要说明的是，为了避免因不必要的细节而模糊了本发明，在附图中仅仅示出了与根据本发明的方案密切相关的结构和/或处理步骤，而省略了与本发明关系不大的其他细节。
本发明的目的在于在数字电视广播系统中提供一种全新的用户主导的数据信息传输方式，使得能够充分有效地利用数字电视节目的TS流中的SI信息，并以合理、舒适的方式将数据信息呈现给用户。
具体地，将本发明的技术方案分为发射端侧的处理和接收端侧的处理来分别加以描述。
图1和图2分别示出了发射端侧的示意性框图和处理过程。
如图1所示，数字电视广播系统的发射端侧，也称数字电视前端，包括：播放控制系统101、电子节目指南(EPG)服务器模块102、复用器103和编码调制模块104。
播放控制系统101是数字电视广播系统发射端的核心，从整体上控制电视节目的播放。
在播放控制系统101的控制下，电子节目指南(EPG)服务器模块102生成SI信息，例如，包含节目列表、播放参数等的电子节目表单。
特别需要说明的是，EPG服务器模块102在生成与节目播放相关的例如节目列表、播放参数等SI信息之外，还将节目提供商和/或业务运营商提供的特定数据也按照SI数据的格式编码在SI数据中。因此，这里所生成的SI信息除了包括通常现有的与节目播放相关的信息之外，还包括节目提供商和/或业务运营商提供的特定数据。
在这里，特定数据是指节目提供商和/或业务运营商希望在电视节目播放过程中传输给用户的任何数据，包括但不限于：与节目播放相关的时间、节目预告、节目背景介绍等数据信息，与节目场景相关的广告信息、网站链接代码、内容索引、优惠券代码等。不同类型的特定数据可以采用不同的编码方式，这取决于节目提供商和/或业务运营商的具体应用开发以及所应用的软硬件环境。例如，业务运营商可能希望向用户呈现一个图片格式的优惠券，考虑到图片格式的文件可以很小，于是可以直接将该图片格式的优惠券编码成SI信息的格式，与SI信息一起发送；这种情况下，在接收端侧接收时，也直接呈现出该图片格式的优惠券来。还可以通过设置数据库，存储特定数据，并给每个特定数据分配和/或指定唯一索引号，这种情况下，将特定数据的索引号编码成SI信息，与SI信息一起发送，接收时解码获得索引号，根据索引号在数据库中查找相应的特定数据。这在节目提供商和/或业务运营商希望向用户传输的信息/特定数据比较大、比较多或者不方便在接收端侧直接呈现出来时，尤为适用。例如，如果节目提供商和/或业务运营商希望呈现给用户的是网站链接，那么优选将网站网址存储在数据库中，并给其分配和/或指定唯一的索引号，然后将索引号编码成SI信息。这样，在接收端侧接收并解码后，获得索引号，根据索引号可以在数据库中查找到相应的网址。
复用器103将电视节目的音频流、视频流与SI信息复用在一起，形成复合的MPEG-2 TS流，其中，复用器103带有节目特殊信息(PSI)/服务信息(SI)插入数据接口。
编码调制模块104将MPEG-2 TS流编码、调制成适于传输的电视信号， 电视信号通过传输通道传输到千家万户。这里，传输通道包括但不限于同轴电缆、卫星微波信道、地面微波信道等。
参见图2所示的流程图，结合图1的框图详细描述发射端侧的处理过程。首先，如步骤S201所示，提供特定数据，特定数据由节目提供商和/或业务运营商提供，是节目提供商和/或业务运营商希望在电视节目播放过程中传输给用户的任何数据，例如，包括但不限于：与节目播放相关的时间、节目预告、节目背景介绍等数据信息，与节目场景相关的广告信息、网站链接代码、内容索引、优惠券代码等。
接着，在步骤S202，将特定数据编码成特定格式，在本示例中，为了作为一种服务信息SI并入MPEG-2 TS流一起传输中，将节目提供商和/或业务运营商提供的特定数据编码成SI数据的格式。
需要说明的是，根据节目提供商和/或业务运营商的具体应用开发以及所应用的软硬件环境，不同类型的特定数据可以采用不同的编码方式，例如，可以直接将特定数据编码成SI信息，也可以通过设置数据库存储特定数据，将相应特定数据的索引编码成SI信息。
接下来，在步骤S203中，将编码后的特定数据复用到待播放的电视节目中；在本示例中，通过带有PSI/SI插入数据接口的复用器按照业界规范(例如，在本实施例中是MPEG-2)将SI信息(包括编码后的特定数据)复用到待播放节目的数据流中，形成MPEG-2 TS流。
最后，在步骤S204中，编码调制并传输MPEG-2 TS流。MPEG-2 TS流经编码调制模块进行相应的编码和调制后，形成适于传输的电视信号，通过传输通道发送。
下面，描述数字电视广播系统中接收端侧的处理。数字电视的接收端侧包括数字机顶盒和用户终端，分别参见图3、图4以及图5、图6进行描述。
图3示出了接收端侧的数字机顶盒的示意性框图。图4示出了数字机顶盒的处理过程。
如图3所示，数字机顶盒包括解调解码模块301、EPG应用程序模块 302、SI数据提取模块303、特定数据解析模块304、发射模块305。
在EPG应用程序模块302控制下，解调解码模块301将通过传输通道接收到的电视信号进行解调、解码，获得MPEG-2 TS流。该MPEG-2 TS流既包括待播放的电视节目的视频流、音频流，也包括在节目播放之前复用到电视节目的数据流中的SI信息，因此，也包括节目提供商和/或业务运营商提供的特定数据。
在EPG应用程序模块302控制下，SI数据提取模块303用于从解调解码后的MPEG-2 TS流中提取出SI数据信息。
特定数据解析模块304用于从所提取的SI数据中解析出特定数据。
发射模块305用于对特定数据进行调制并以无线通信的方式广播调制后的特定数据。这里，无线通信方式可以是WiFi、LED光通信、红外线通信、声波通信等任何无线通信方式。与之相匹配的，如果采用WiFi方式，则发射模块将特定数据调制成WiFi信号广播出去；如果采用红外线通信的方式，发射模块则将特定数据调制成红外线信号广播出去；如果采用声波通信的方式，发射模块可以将特定数据调制成某一频段的数字声波信号通过声学换能器(包括但不限于电磁式扬声器)广播出去。
具体过程如图4所示，在步骤S401，接收通过传输通道传输而来的电视信号。
在步骤S402，对接收到的电视信号进行解调、解码，输出MPEG-2 TS流。
在步骤S403，提取MPEG-2 TS流中的SI信息，SI信息中除了包括电子节目指南所需要的节目列表、播放参数等通常的SI信息外，还包括节目提供商和/或业务运营商提供希望在节目播放过程中传输给用户的特定数据。
在步骤S404，解析SI信息以获取特定数据。
在步骤S405，调制并以无线通信的方式将特定数据广播出去。这里，无线通信方式可以是WiFi、LED光通信、红外线通信、声波通信等任何无线通信方式。
毋庸置疑，根据无线通信方式的不同，发射模块305在执行上述步骤 405时，同样需要根据无线通信方式对特定数据进行编码和调制。类似地，可以直接将特定数据编码调制成无线信号，也可以通过设置数据库存储特定数据而将特定数据的唯一索引号编码调制成相应的无线信号。
图5示出数字电视广播系统中接收端侧的用户终端的示意性框图。图6示出了其处理过程。
如图5所示，用户终端包括接收解调模块501和特定数据应用模块502。
这里，用户终端可以是智能手机、掌上电脑、个人计算机、平板电脑、笔记本电脑等任何具备一定计算能力的智能终端设备。
接收解调模块501用于接收数字机顶盒通过无线通信方式广播的包含有特定数据的无线信号，并将无线信号中的特定数据解调并输出。
因此，接收解调模块501使用的接收方式与数字机顶盒的广播特定数据的方式相匹配。即，接收解调模块501支持数字机顶盒的无线通信方式。例如，如果数字机顶盒的发射模块使用WiFi方式发射WiFi信号，用户终端的接收解调模块501则采用与之匹配的无线信号接收模块，接收WiFi信号；如果数字机顶盒的发射模块采用声波通信的方式，则用户终端的接收模块501可以是麦克风，用以接收并解调声波信号，输出特定数据。
特定数据应用模块502用于响应于触发信号将接收解调模块501输出的特定数据处理成可供用户终端呈现出来的数据。例如，如果特定数据是一个图像格式的优惠信息，则特定数据应用模块502将该图片呈现在用户终端的显示屏上；如果接收解调模块501输出的是一个索引，则特定数据应用模块502将根据索引在数据库中查找索引所对应的信息，例如是一个网站链接，并将链接呈现给用户终端，用户进一步通过点击链接可以访问网站。
这里，触发信号是指用户的主动触发，包括但不限于，通过按下开关按钮、语音命令输入、手势指令输入来启动该应用程序。
通常情况下，接收解调模块501可以处于关闭状态。可替换地，特定数据应用模块502可以处于关闭状态，这样，即使接收解调模块501打开且解调出特定数据，但特定数据应用模块502处于关闭状态，并不做进一 步的处理或响应，而是仅在需要的时候响应于用户的触发才进行下一步处理。
具体过程如图6所示，在步骤S601，接收数字机顶盒广播的无线信号。这里，无线信号可以是WiFi信号、红外线信号、光信号、声波信号。
在步骤S602，对接收到的无线信号进行解调，以获得特定数据。
在步骤S603，在需要的时候，触发并呈现出特定数据。
进一步地，对于某些类型的特定数据，还可以在步骤S604中将特定数据直接用于网络浏览器，完成购买和预定。
下面，以在电视上播放某一电影并将电影中演员服装的相关信息传输给用户为例，来描述本发明的数据传输方案。
在某电影的节目提供商授权在电视台播放该电影时，希望向用户呈现电影中演员们的服装信息，例如是出售服装的网站。
基于此，首先，将出售服装的网站链接存储在数据库中，并分配和/或指定一个唯一的索引号或者标记。
然后，将该索引号编码成SI信息。在电视台播放该电影时，复用器按照时间顺序将SI信息与电影的TS流进行复用，形成复合的TS流。复合的TS流经编码调制，形成电视信号，通过传输通道广播出去。
在用户侧，用户打开电视和机顶盒，观看这个电影的时候，机顶盒接收电视信号，通过解调解码，获得该电影的TS流。进一步地，作为特定数据的网站链接的索引号被进一步解析出来。
利用正交相移编码(QPSK，Quadrature Phase Shift Keying)、移频键控(FSK，Frequency Shift Keying)和/或正交幅度调制(QAM，Quadrature Amplitude Modulation)等调制方式将解析出来的索引号编码调制成18kHz-20kHz的声波信号，通过机顶盒外插的电磁式扬声器发射出去。
当用户在观看电影的过程中，对某个演员的服装感兴趣时，可以打开用户终端(例如，智能手机)中的特定数据应用模块(例如，是一个客户端应用程序)，通过智能手机内置的麦克风接收声波信号，并解调索引号，在数据库中查找索引号对应的特定数据，即出售网址，进一步地，特定数 据应用模块将网址直接用于网络浏览器，用户就可以在智能手机上浏览该网页，根据网页提供的内容还可以进一步完成预定和/或购买。
通过以上实施例可见，本发明的方案是一种由用户主导的数据信息传递方式，在基本上不改动现有数字电视广播系统的基础上，有效地利用数字电视广播系统在播放电视信号过程中的传输流来传输信息，并且以合理、舒适的方式使用户可以接收到数据，同时不影响用户的观感。
以上所述的具体实施方式是用于帮助理解本发明的目的、技术方案和有益效果，应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种在数字电视广播中传输特定数据的方法，其特征在于，该方法包括：
    从数字电视广播节目的传输流中提取服务信息数据；
    解析出所述服务信息数据中的特定数据，所述特定数据是节目提供商/业务运营商提供的，并按照服务信息数据的格式预先编码在所述服务信息数据中；以及
    对所述特定数据进行编码调制并以无线通信方式对编码调制后的信号进行广播。
  2. 如权利要求1所述的方法，其特征在于，在提取服务信息数据之前，该方法进一步包括：
    在数据库中存储特定数据，并给特定数据分配唯一索引号；
    将所述索引号编码在所述服务信息数据中；以及
    将编码有索引号的服务信息数据与将要播放的数据电视广播节目复用在一起，形成传输流。
  3. 如权利要求1所述的方法，其特征在于，所述方法进一步包括：
    接收并解调广播的信号，以获得特定数据；
    呈现所述特定数据。
  4. 如权利要求1所述的方法，其特征在于，对所述特定数据进行编码调制包括：
    采用QPSK、FSK和/或QAM的调制方式将所述特定数据编码调制成无线信号。
  5. 如权利要求1所述的方法，其特征在于，所述无线通信方式是下列通信方式之一：WiFi、LED光通信、红外线、声波通信。
  6. 一种在数字电视广播中传输特定数据的装置，其特征在于，该装置包括：
    EPG应用程序模块，用于控制解调解码模块将接收到的电视信号解调、解码，以获得传输流，并控制服务信息数据提取模块从传输流中提取服务信息数据；
    特定数据解析模块，用于从服务信息数据中解析出特定数据，其中，所述特定数据是节目提供商/业务运营商提供的，并按照服务信息数据的格式预先编码在所述服务信息数据中；
    发射模块，用于对特定数据进行调制并以无线通信方式广播调制后的特定数据。
  7. 如权利要求6所述的装置，其特征在于，所述发射模块采用QPSK、FSK和/或QAM的调制方式将所述特定数据编码调制成无线信号。
  8. 如权利要求6所述的装置，其特征在于，所述发射模块采用的无线通信方式是下列通信方式之一：WiFi、LED光通信、红外线、声波通信。
  9. 一种接收数字电视广播中传输的特定数据的终端，其特征在于，该终端包括：
    接收解调模块，用于接收通过无线通信方式广播的包含有特定数据的无线信号，并将所述无线信号中的特定数据解调和输出，其中，所述特定数据是节目提供商/业务运营商提供的，并预先编码在与数字电视广播的传输流复用在一起的服务信息数据中；以及
    特定数据应用模块，用于响应于触发信号呈现所述接收解调模块所输出的特定数据。
  10. 如权利要求9所述的终端，其特征在于，所述终端是智能手机、平板电脑、个人计算机或笔记本电脑。
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CN102769799A (zh) * 2011-05-03 2012-11-07 朱佩江 一种在ip网络中实现数字电视业务分发服务的方法及系统
CN103024508A (zh) * 2011-09-20 2013-04-03 Lg电子株式会社 数字系统及其处理服务数据的方法
CN102595232A (zh) * 2012-02-24 2012-07-18 青岛海信电器股份有限公司 数字电视节目相关信息搜索方法及数字电视接收终端
CN105338375A (zh) * 2014-06-17 2016-02-17 北京司响无限文化传媒有限公司 在数字电视广播中传输特定数据的方法、装置和接收终端

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