WO2009065332A1 - Method, system, and apparauts for realizing program hidding - Google Patents

Method, system, and apparauts for realizing program hidding Download PDF

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Publication number
WO2009065332A1
WO2009065332A1 PCT/CN2008/072743 CN2008072743W WO2009065332A1 WO 2009065332 A1 WO2009065332 A1 WO 2009065332A1 CN 2008072743 W CN2008072743 W CN 2008072743W WO 2009065332 A1 WO2009065332 A1 WO 2009065332A1
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WO
WIPO (PCT)
Prior art keywords
epg
sub
total
top box
user set
Prior art date
Application number
PCT/CN2008/072743
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English (en)
French (fr)
Inventor
Jian Wang
Original Assignee
Shenzhen Huawei Communication Technologies Co., Ltd.
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.)
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39251008&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2009065332(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Shenzhen Huawei Communication Technologies Co., Ltd. filed Critical Shenzhen Huawei Communication Technologies Co., Ltd.
Priority to EP08851681A priority Critical patent/EP2204994A4/en
Priority to BRPI0818385 priority patent/BRPI0818385A2/pt
Publication of WO2009065332A1 publication Critical patent/WO2009065332A1/zh
Priority to US12/757,625 priority patent/US8499322B2/en

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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
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • H04N21/4828—End-user interface for program selection for searching program descriptors
    • 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
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26283—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for associating distribution time parameters to content, e.g. to generate electronic program guide data
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2668—Creating a channel for a dedicated end-user group, e.g. insertion of targeted commercials based on end-user profiles
    • 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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
    • 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
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • 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
    • H04N21/4508—Management of client data or end-user data
    • H04N21/4524—Management of client data or end-user data involving the geographical location of the client
    • 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
    • H04N21/4508—Management of client data or end-user data
    • H04N21/4532—Management of client data or end-user data involving end-user characteristics, e.g. viewer profile, preferences
    • 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
    • H04N21/454—Content or additional data filtering, e.g. blocking advertisements
    • H04N21/4542—Blocking scenes or portions of the received content, e.g. censoring scenes
    • 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

Definitions

  • the present invention relates to the field of digital television technology, and more particularly to a method, system and apparatus for implementing program hiding.
  • An embodiment of the present invention provides a method for implementing program hiding, which can implement program hiding for a user.
  • An embodiment of the present invention provides a system for implementing program hiding, which can implement program hiding for a user.
  • the embodiment of the invention provides a set top box, which can hide programs from a user.
  • the embodiment of the invention provides a total front end, which can hide the program from the user.
  • the embodiment of the present invention provides a split front end, which can hide a program from a user.
  • the embodiment of the invention discloses a method for implementing program hiding, the method comprising:
  • the total EPG includes a sub EPG identifier and a sub EPG corresponding to each sub EPG identifier;
  • the embodiment of the present invention discloses a system for implementing program hiding, the system comprising: the system includes: a total front end and a receiving terminal system, wherein
  • the total front end is used to deliver a total EPG to the receiving terminal system, and the total EPG includes a sub EPG identifier and a sub EPG corresponding to each sub EPG identifier;
  • the receiving terminal system is configured to acquire the sub EPG identifier, and find a sub EPG corresponding to the obtained sub EPG identifier from the total EPG sent by the total front end, and perform program hiding according to the sub EPG.
  • the embodiment of the present invention discloses a set top box, where the set top box includes: an eigenvalue acquisition module, an EPG receiving module, and a program hiding module, where
  • an eigenvalue obtaining module configured to acquire a feature value, and send the eigenvalue to the program hiding module
  • an EPG receiving module configured to receive a total EP including the feature value and a sub EPG corresponding to the feature value
  • a program hiding module configured to find a sub-EP corresponding to the received feature value from the received total EPG
  • the embodiment of the present invention discloses a total front end, where the front end includes: an allocation module and an EPG sending module, wherein
  • the allocation module is configured to allocate different feature values for different user set top boxes
  • the EPG sending module is configured to send a total EPG to the user set top box, where the total EPG includes the allocated feature values and sub EPGs corresponding to the respective feature values.
  • the embodiment of the present invention discloses a sub-front end, wherein the sub-front end includes: a filtering module, [30] The total EPG for receiving the code including the front end and the sub EPG corresponding to each of the front end codes, filtering all sub EPGs except the designated sub EPG from the received total EPG, and then filtering the total EPG It is sent to a user set-top box within its own management scope; the designated sub-EPG is a sub-EPG corresponding to the code of the sub-front end.
  • the sub-EPG identifier is obtained, and the total electronic program guide EPG delivered by the total front end is received, where the total EPG includes the sub EPG identifier and the corresponding sub-EPG identifier.
  • the sub-EPG is configured to find a sub-EPG corresponding to the acquired sub-EPG identifier from the received total EPG, and the program is hidden according to the technical scheme of performing program hiding according to the sub-EPG.
  • FIG. 1 is a flowchart of a method for implementing program hiding according to an embodiment of the present invention
  • FIG. 2 is a flow chart of a first embodiment of a method for implementing program hiding according to the present invention
  • FIG. 3 is a flow chart of a second embodiment of a method for implementing program hiding according to the present invention.
  • FIG. 4 is a flow chart of a third embodiment of a method for implementing program hiding according to the present invention.
  • FIG. 5 is a structural block diagram of a system for implementing program hiding according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a set top box according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of a front end according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a front end according to an embodiment of the present invention.
  • FIG. 1 is a flow chart of a method for implementing program hiding according to an embodiment of the present invention. As shown in Figure 1, the following steps are included:
  • Step 101 Obtain the Sub-Electronic Program Guide (EPG) logo.
  • Step 102 Receive a total EPG delivered by the total front end, where the total EPG includes a sub EPG identifier and a sub EPG corresponding to each sub E PG identifier.
  • Step 103 Find a sub EPG corresponding to the acquired sub EPG identifier from the received total EPG, and perform program hiding according to the sub EPG.
  • FIG. 2 is a flow chart of a first embodiment of a method for implementing program hiding according to the present invention. As shown in Figure 1, including The following steps:
  • Step 201 The total front end sends a total EPG to each of the sub-front ends, and the total EPG includes codes of the respective front ends and sub EPGs corresponding to the respective sub front end codes.
  • Step 202 Each sub-front end sends the received total EPG and its own code to the user set top box within its management scope.
  • Step 203 The user set top box searches for the sub EPG corresponding to the received sub-front end code from the received total EPG, and performs program hiding according to the sub EPG.
  • step 203 the user set top box performs program hiding according to the sub EPG, and can hide all programs not included in the sub EPG, and can also hide all programs included in the sub EPG.
  • program hiding can be implemented for group users in each sub-front-end management scope.
  • each sub-front end can separately manage user set-top boxes in different regions, and the sub-front code can be the area code of the area managed by the sub-front end, so that different programs can be hidden for users in different regions. That is, different program viewing restrictions can be implemented in different regions, for example, different viewing restrictions are implemented in urban and suburban areas.
  • the correspondence between the area code and the sub-EPG can be realized by the feature value in the total EPG, that is, two lists are established in the total EPG. The first list stores a one-to-one correspondence between each area code and each different feature value.
  • the second list stores each feature value and a sub-EPG corresponding to each feature value, and each sub-EPG includes its All program information that can be searched for in the corresponding area, that is, a list of programs that can be viewed. In this way, when it is necessary to adjust the program that can be viewed in a certain area, it is only necessary to modify or replace the sub EPG corresponding to the feature value corresponding to the area code of the area in the total EPG.
  • the split front end can be implemented by modifying the area code of the total front end in the total EPG to its own area code, and then sending the total EPG to the user set top box in the area.
  • the own area code is sent to the user's set top box in the area.
  • the user set-top box After receiving the total EPG, the user set-top box first knows the area code of the area where the area is located from the total EPG, and then finds the area code of the area where the area is located from the first list containing the correspondence between the area code and the feature value. Corresponding feature values, and according to the feature values, find corresponding sub-EPGs from the second list of the sub-EPGs corresponding to the respective feature values and corresponding to the respective feature values, and then perform program hiding according to the sub-EPG.
  • the area code may be a flag value (N_ID) of the network information table NIT
  • the feature value may be a flag value (B_ID) of the group information table BAT.
  • the TV programs issued by Shenzhen City include: "Phoenix Satellite TV", “National Geography”, etc., and now Radio and Television does not want users in Longgang District to watch "Phoenix Satellite TV” and "National Geography” are two programs, users in other regions can watch these two programs.
  • the N_ID of the total front end of the city network is 1, and the N_ID of Longgang District is 5.
  • N_ID 5
  • B_ID 0x7011
  • This table describes the service address Servicejd of all programs that can be searched in Longgang District, but does not include "Phoenix Satellite TV" and "National Geographic”.
  • B_ID 0x7011
  • B_ID 0x7011
  • FIG. 3 is a flow chart of a second embodiment of a method for implementing program hiding according to the present invention. As shown in Figure 3, the following steps are included:
  • Step 301 the total front end sends a total EPG to each of the sub-front ends, and the total EPG includes the code of each sub-front end and the sub EPG corresponding to each sub-front end code.
  • Step 302 Each sub-front end filters out all sub-Es that do not correspond to its own code from the received total EPG.
  • the PG sends the filtered total EPG to the user's set-top box within its management scope.
  • the split front end filters out all sub EPGs that do not correspond to its own code from the total EPG, and only retains the sub EPG corresponding to its own code in the total EPG, and deletes all other sub EPGs.
  • Step 303 the user set top box searches for the program according to the received total EPG.
  • each of the sub-front ends can separately manage user set-top boxes in different regions, and the front-end code can be the area code of the area managed by the sub-front end, and thus can be implemented for users in different regions. Different programs are hidden. And in the embodiment shown in FIG. 3, the filtering function of the front end is utilized, from The source realizes program hiding, which guarantees viewing restrictions. In addition, in the implementation shown in FIG. 3, as in the solution described in Embodiment 2, in order to implement flexible allocation of the sub-EPG at the front end, the eigenvalue can be used to implement the area code and the sub-EPG in the total EPG. The correspondence is not repeated here.
  • FIG. 4 is a flow chart of a third embodiment of a method for implementing program hiding according to the present invention. As shown in Figure 4, the following steps are included:
  • Step 401 the user set top box acquires the feature value.
  • Step 402 The user set top box receives a total EPG sent by the front end, where the total EPG includes the feature value and a sub EPG corresponding to the feature value.
  • Step 403 The user set top box finds the sub E corresponding to the acquired feature value from the received total EPG.
  • program hiding can be implemented for a specific unit or even an individual. For example, government agencies, hotels, etc.
  • a smart card containing a feature value can be assigned to a user, and the user set top box reads the feature value from the smart card containing the feature value.
  • Shenzhen Broadcasting and Television does not want User A to receive "Phoenix Satellite TV".
  • User A's set-top box first reads the feature value 0x7011 from the smart card and saves it, then finds the BAT table corresponding to the feature value 0x7011 from the received EPG, and searches for the program according to the BAT table, where the BAT table is not described. The programs are filtered out. In this way, User A will not search for "Phoenix Satellite TV".
  • the front end of Longgang District receives the total EPG delivered from the total front end of the city network. After that, directly filter out the sub EPG that does not belong to Longgang District, and then filter it.
  • the total EPG is issued to the user's set-top box in the area. In this way, a smart card that has a feature value that does not belong to Longgang District cannot be used in Longgang District.
  • FIG. 5 is a structural block diagram of a system for implementing program hiding according to an embodiment of the present invention. As shown in FIG. 5, the system includes: a total front end 501 and a receiving terminal system 502, wherein:
  • the total front end 501 is configured to deliver a total EPG to the receiving terminal system 502, where the total EPG includes a sub EPG identifier and a sub EPG corresponding to each sub EPG identifier.
  • the receiving terminal system 502 is configured to obtain a sub EPG identifier, and find a sub EPG corresponding to the acquired sub EPG identifier from the total EPG sent by the total front end, and perform program hiding according to the sub EPG.
  • the receiving terminal system 502 can include: more than one sub-front end and a user set top box within each of the front end management ranges.
  • the sub EPG is identified as a front-end code, and wherein: a front-end, for receiving the total EPG sent by the total front-end, and transmitting the received total EPG and its own code to the user set-top box within its management scope; the user set-top box And for finding a sub EPG corresponding to the received sub-front end code from the received total EPG, and performing program hiding according to the sub EPG.
  • the receiving terminal system 502 can include: more than one sub-front end and a user set top box within each of the front end management ranges.
  • the sub-EPG is identified as a partial front-end code, and wherein: a sub-front end is used to filter all sub-EPGs except the specified sub-EPG from the received total EPG, and then deliver the filtered total EPG to its own management scope.
  • the user set-top box; the designated sub-EPG is a sub-EPG corresponding to the code of the sub-front end; the user set-top box is configured to receive the total EPG sent by the front-end, and search for the program according to the total EPG.
  • the receiving terminal system 502 may further include: a user set top box, the dice EPG is identified as a feature value, and: the user set top box is configured to acquire a feature value, and receive the total sent by the front end. E PG; Find a sub EPG corresponding to the acquired feature value from the received total EPG, and perform program hiding according to the sub EPG.
  • the set top box includes: a feature value obtaining module 601, an EPG receiving module 602, and a program hiding module 603, where
  • the feature value obtaining module 601 is configured to acquire the feature value, and send it to the program hiding module 603;
  • the EPG receiving module 602 is configured to receive the total EPG including the feature value and the sub-EPG corresponding to the feature value, and send to the program hiding module 603;
  • the program hiding module 603 is configured to find a sub EPG corresponding to the received feature value from the received total EPG, and perform program hiding according to the sub EPG.
  • the total front end includes: an attribute value distribution module 701 and an EPG transmission module 702, where
  • the feature value allocation module 701 is configured to allocate different feature values for different user set top boxes, and send the assigned feature values to the EPG sending module;
  • the EPG sending module 702 is configured to send a total EPG to the user set top box, where the total EPG includes the assigned feature value and a sub EPG corresponding to each feature value.
  • the sub-front end includes a filter module 801.
  • the filtering module 801 is configured to receive a code including a front end and a total EPG of the sub EPG corresponding to each of the front end codes, and filter all sub EPGs except the specified sub EPG from the received total EPG, and then filter the total EPG.
  • the EPG is sent to a user set-top box within its own management scope; the designated sub-EPG is a sub-EPG corresponding to the code of the sub-front end.
  • the total EPG including the area code of each area and the sub-EPG corresponding to the area code of each area is transmitted to the front end of each area through the total front end;
  • the received total EPG and its own area code are sent to the user set top box in the local area;
  • the user set top box searches for the sub EPG corresponding to the received area code from the received total EPG, and performs program hiding according to the sub EPG.
  • the technical solution realizes regional program hiding, so that different program viewing restrictions can be implemented in different regions.
  • the feature value is obtained by the user set-top box, and the sub-EPG corresponding to the acquired feature value and the sub-EPG corresponding to the feature value sent by the front-end is received, and the sub-EPG corresponding to the acquired feature value is found from the total EPG, according to
  • the sub-EPG implements program hiding scheme, which realizes program hiding for a specific user, and compensates for the lack of regional program hiding mode; the front end segment filters all sub EPGs except the sub EPG belonging to the local area from the total EPG, and then The technical solution of sending the filtered total EPG to the user's set top box is implemented, and the program hiding is realized from the source.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Human Computer Interaction (AREA)
  • Information Transfer Between Computers (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Stored Programmes (AREA)

Description

说明书 实现节目隐藏的方法、 系统以及装置
[I] 本发明要求于 2007年 10月 23日提交中国专利局、 申请号为 200710165616.4、 发 明名称为"实现节目隐藏的方法、 系统以及装置"的中国专利申请的优先权， 其全 部内容通过引用结合在本申请中。
[2] 技术领域
[3] 本发明涉及数字电视技术领域， 尤指实现节目隐藏的方法、 系统以及装置。
[4] 发明背景
[5] 随着数字电视技术的日益成熟， 传统的模拟电视正大规模地向数字电视平移。
在这过程中运营商根据自身的策略提出了各种需求， 例如， 为了限制一些用户 的收视范围或者在不同的地区实行不同的收费标准， 需要对这些用户进行部分 节目的隐藏， 即让用户不能收看到这部分节目。
[6] 目前， 存在一种基于授权机制的节目隐藏方案， 该方案通过对每个独立的用户 进行节目授权来实现有效的收费机制， 对于一个用户来说， 只能收看授权的节 目， 没有被授权的节目虽然可以被搜索保存下来， 但却无法正常收看， 只有缴 费并被授权后才能收看。 该方案使得用户能够知道节目的存在， 但需要缴费后 才能收看。
[7] 但是， 对于一些特殊的节目， 局方根本就不想让特定用户知道这些节目的存在
， 此吋， 上述方案则不能满足要求。 另外， 如果需要对一个群组内的大量用户 进行同样的节目隐藏吋， 上述方案需要对每个用户分别进行授权， 因此执行起 来比较繁琐。
[8] 发明内容
[9] 本发明实施例提供一种实现节目隐藏的方法， 该方法能够对用户实现节目隐藏
[10] 本发明实施例提供一种实现节目隐藏的系统， 该系统能够实现对用户实现节目 隐藏。
[I I] 本发明实施例提供了一种机顶盒， 该机顶盒能够对用户实现节目隐藏。 [12] 本发明实施例提供了一种总前端， 该总前端能够对用户实现节目隐藏。
[13] 本发明实施例提供了一种分前端， 该分前端能够对用户实现节目隐藏。
[14] 为达到上述目的， 本发明的技术方案具体是这样实现的：
[15] 本发明实施例公开了一种实现节目隐藏的方法， 该方法包括：
[16] 获取子电子节目指南 EPG标识；
[17] 接收总前端下发的总电子节目指南 EPG, 该总 EPG中包含子 EPG标识以及与各 子 EPG标识对应的子 EPG；
[18] 从所接收的总 EPG中査找出与所获取的子 EPG标识对应的子 EPG, 根据该子 EP
G进行节目隐藏。
[19] 本发明实施例公开了一种实现节目隐藏的系统， 该系统包括： 该系统包括： 总 前端和接收端子系统， 其中，
[20] 总前端， 用于向接收端子系统下发总 EPG, 该总 EPG中包含子 EPG标识以及与 各子 EPG标识对应的子 EPG；
[21] 接收端子系统， 用于获取子 EPG标识， 并从总前端发送的总 EPG中査找出与所 获取的子 EPG标识对应的子 EPG, 根据该子 EPG进行节目隐藏。
[22] 本发明实施例公开了一种机顶盒， 该机顶盒包括： 特征值获取模块， EPG接收 模块和节目隐藏模块， 其中，
[23] 特征值获取模块， 用于获取特征值， 并发送给节目隐藏模块；
[24] EPG接收模块， 用于接收包含所述特征值以及与该特征值对应的子 EPG的总 EP
G, 并发送给节目隐藏模块；
[25] 节目隐藏模块， 用于从所接收的总 EPG中査找出与所接收的特征值对应的子 EP
G, 根据该子 EPG进行节目隐藏。
[26] 本发明实施例公开了一种总前端， 该前端包括： 分配模块和 EPG发送模块， 其 中，
[27] 所述分配模块， 用于为不同的用户机顶盒分配不同的特征值；
[28] 所述 EPG发送模块， 用于向用户机顶盒发送总 EPG, 该总 EPG中包含所述分配 的特征值以及与各个特征值对应的子 EPG。
[29] 本发明实施例公开了一种分前端， 其特征在于， 该分前端包括： 过滤模块， [30] 用于接收包含分前端的代码以及与各分前端代码对应的子 EPG的总 EPG, 从所 接收的总 EPG中过滤除指定子 EPG以外的所有子 EPG, 然后将过滤后的总 EPG下 发给自身管理范围内的用户机顶盒； 所述指定子 EPG是与该分前端的代码对应的 子 EPG。
[31] 由上述技术方案可见， 本发明实施例中， 通过获取子 EPG标识， 并接收总前端 下发的总电子节目指南 EPG, 该总 EPG中包含子 EPG标识以及与各子 EPG标识对 应的子 EPG; 从所接收的总 EPG中査找出与所获取的子 EPG标识对应的子 EPG, 根据该子 EPG进行节目隐藏的技术方案， 对用户实现了节目隐藏。
[32] 附图简要说明
[33] 图 1是本发明实施例一种实现节目隐藏的方法的流程图；
[34] 图 2是本发明一种实现节目隐藏的方法的第一实施例流程图；
[35] 图 3是本发明一种实现节目隐藏的方法的第二实施例流程图；
[36] 图 4是本发明一种实现节目隐藏的方法的第三实施例流程图；
[37] 图 5是本发明实施例一种实现节目隐藏的系统的结构框图
[38] 图 6是本发明实施例一种机顶盒的结构框图；
[39] 图 7是本发明实施例一种前端的结构框图；
[40] 图 8是本发明实施例一种分前端的结构框图。
[41] 实施本发明的方式
[42] 图 1是本发明实施例一种实现节目隐藏的方法的流程图。 如图 1所示， 包括以下 步骤：
[43] 步骤 101， 获取子电子节目指南 （EPG) 标识。
[44] 步骤 102， 接收总前端下发的总 EPG, 该总 EPG中包含子 EPG标识以及与各子 E PG标识对应的子 EPG。
[45] 步骤 103， 从所接收的总 EPG中査找出与所获取的子 EPG标识对应的子 EPG, 根 据该子 EPG进行节目隐藏。
[46] 为使本发明的目的、 技术方案及优点更加清楚明白， 以下参照附图并举较佳实 施例， 对本发明进一步详细说明。
[47] 图 2是本发明一种实现节目隐藏的方法的第一实施例流程图。 如图 1所示， 包括 以下步骤：
[48] 步骤 201， 总前端向各个分前端发送总 EPG, 该总 EPG中包含各个分前端的代 码以及与各个分前端代码对应的子 EPG。
[49] 步骤 202， 各个分前端将所接收的总 EPG以及自身的代码发送给自身管理范围 内的用户机顶盒。
[50] 步骤 203， 用户机顶盒从所接收的总 EPG中査找出与所接收的分前端代码对应 的子 EPG， 根据该子 EPG进行节目隐藏。
[51] 在步骤 203中， 用户机顶盒根据子 EPG进行节目隐藏吋， 可以隐藏所有不包含 在该子 EPG中的节目， 也可以隐藏所有包含在该子 EPG中的节目。
[52] 通过图 2所示的方法， 可以对各个分前端管理范围内的群组用户实现节目隐藏
[53] 在图 2中， 各个分前端可以分别管理不同地区的用户机顶盒， 分前端代码可以 是该分前端所管理的地区的区域码， 此吋可以对不同地区的用户实现不同的节 目的隐藏， 即可以在不同的地区实现不同的节目收看限制， 例如， 在市区和郊 区实现不同的收看限制。 另外， 在图 2所示的方法中， 为了可以在前端实现灵活 分配子 EPG, 在总 EPG中可以通过特征值实现区域码与子 EPG之间的对应关系， 即在总 EPG中建立两个列表， 第一个列表中保存各个区域码与各个不同的特征值 之间的一一对应关系， 第二个列表中保存各个特征值以及与各个特征值对应的 子 EPG, 每个子 EPG中包含其所对应的区域可以搜索到的所有节目信息， 即可以 收看的节目列表。 这样当需要调整某个地区可以收看的节目吋， 只需要修改或 替换总 EPG中与该地区的区域码对应的特征值所对应的子 EPG即可。
[54] 在图 2所示的方法中， 分前端可以通过将总 EPG中的总前端的区域码修改为自 身的区域码， 再将总 EPG下发给本区域内的用户机顶盒的方式实现将自身的区域 码发送给本区域内的用户机顶盒。
[55] 用户机顶盒接收到总 EPG后， 首先从总 EPG中获知自身所在区域的区域码， 然 后从含有区域码和特征值对应关系的第一个列表中査找出与自身所在地区的区 域码对应的特征值， 并根据此特征值从包含各个特征值以及与各个特征值对应 的子 EPG的第二个列表中找出对应的子 EPG, 再根据该子 EPG进行节目隐藏。 [56] 在上述实施例中， 区域码可以是网络信息表 NIT的标志值 （N_ID) ，特征值可以 是群组信息表 BAT的标志值 （B_ID) 。
[57] 下面以深圳市网为例对图 2中的方法进一步说明： 深圳市网下发的电视节目包 括： "凤凰卫视"、 "国家地理"等， 而现在广电不希望龙岗区的用户收看"凤凰卫 视"和"国家地理"这两个节目， 其它地区的用户可以收看这两个节目。 市网总前 端的 N_ID = 1， 龙岗区的N_ID = 5。 市网总前端在其中心频点， 如 259MHz下发 的 EPG中的 NIT中插入一个私有描述子 tag = 0x85， 此描述子中含有N_ID与B_ID 之间的——对应关系， 如N_ID = 5对应于 B_ID = 0x7011。 NIT是 EPG的一个组成 部分。 再在 EPG中插入对应于 B_ID = 0x7011的 BAT表， 此表中描述了龙岗区可 以搜索到的所有节目的服务地址 Servicejd, 但不包括"凤凰卫视"和"国家地理" 。 龙岗区的分前端接收到中心频点 259MHz的 EPG后将其中的 N_ID = 1修改为 N_I D = 5， 再下发给整个龙岗区的用户机顶盒。 龙岗区的用户机顶盒接收到中心频 点 259MHz的 NIT后， 根据 N_ID = 5解析出
B_ID = 0x7011 , 再解析出与 B_ID = 0x7011对应的 BAT表， 然后根据这个 BAT表 搜索节目， 凡是这个 BAT表中没有描述的节目一律过滤掉。 这样， 龙岗区的用 户就不会搜索到"凤凰卫视"和"国家地理"这两个节目。
[58] 图 3是本发明一种实现节目隐藏的方法的第二实施例流程图。 如图 3所示， 包括 以下步骤：
[59] 步骤 301， 总前端向各个分前端发送总 EPG, 该总 EPG中包含各个分前端的代 码以及与各个分前端代码对应的子 EPG。
[60] 步骤 302， 各个分前端从所接收的总 EPG中过滤掉与自身代码不对应的所有子 E
PG, 再将过滤后的总 EPG发送给自身管理范围内的用户机顶盒。
[61] 步骤中， 分前端从总 EPG中过滤掉与自身代码不对应的所有子 EPG, 是只保留 总 EPG中与自身代码对应的子 EPG, 而删除其它所有的子 EPG。
[62] 步骤 303， 用户机顶盒根据所接收的总 EPG搜索节目。
[63] 在图 3所示的实施例中， 各个分前端可以分别管理不同地区的用户机顶盒， 分 前端代码可以是该分前端所管理的地区的区域码， 此吋可以对不同地区的用户 实现不同的节目的隐藏。 并且在图 3所示的实施例中利用分前端的过滤功能， 从 源头实现了节目隐藏， 保证了收视限制。 另外， 在图 3所示的实施中， 可以与实 施例 2中所述的方案一样， 为了可以在前端实现灵活分配子 EPG, 在总 EPG中可 以通过特征值实现区域码与子 EPG之间的对应关系， 这里不再复述。
[64] 图 4是本发明一种实现节目隐藏的方法的第三实施例流程图。 如图 4所示， 包括 以下步骤：
[65] 步骤 401， 用户机顶盒获取特征值。
[66] 步骤 402， 用户机顶盒接收前端发送的总 EPG, 该总 EPG中包含所述特征值以 及与该特征值对应的子 EPG。
[67] 步骤 403， 用户机顶盒从所接收的总 EPG中査找出与所获取的特征值对应的子 E
PG, 根据该子 EPG进行节目隐藏。
[68] 通过图 4所示的方法， 可以对某个特定的单位甚至是个人实现节目隐藏。 例如 政府机关， 酒店等。
[69] 在图 4所示的方法中， 可以向用户分配包含特征值的智能卡， 用户机顶盒从包 含所述特征值的智能卡中读取特征值。
[70] 下面以深圳市网为例对图 4中的方法进一步说明： 深圳广电不希望用户 A收看到 "凤凰卫视"。 此吋， 可以在给用户 A分配的智能卡中写入一个特征值， 如8_10 = 0x7011 , 而市网前端下发的 EPG中包含一个与 B_ID = 0x7011对应的 BAT表， 此 表包含所有用户 A可以搜索到的节目的 Sendcejd, 但不包含"凤凰卫视"。 用户 A 的机顶盒首先从智能卡中读取特征值 0x7011并保存下来， 然后从接收的 EPG中査 找出与特征值 0x7011对应的 BAT表， 并根据此 BAT表搜索节目， 凡是这个 BAT 表中没有描述的节目一律过滤掉。 这样， 用户 A就不会搜索到"凤凰卫视"。
[71] 在图 4所示的实施例中， 当所述用户机顶盒处于某个分前端的管辖范围内吋， 例如， 该用户机顶盒所在的区域存在分前端吋， 该分前端也可以在接收到总前 端下发的总 EPG后， 过滤掉不属于本区域的所有子 EPG, 再将过滤后的 EPG下发 给自身管辖范围内的用户机顶盒， 这样可以保证本区域内的用户只能收看属于 本区域可以收看的节目。 例如， 龙岗区不希望其它区的智能卡被拿到龙岗区后 ， 根据自身的不属于龙岗区的特征值搜索到节目， 那么龙岗区的分前端在收到 市网的总前端下发的总 EPG后， 直接过滤掉不属于龙岗区的子 EPG, 再将过滤后 的总 EPG下发给本区域内的用户机顶盒。 这样， 拥有不属于龙岗区的特征值的智 能卡就不能在龙岗区使用。
[72] 基于上述实现节目隐藏的方法， 接下来介绍本发明实施例实现节目隐藏的系统 以及机顶盒、 总前端和分前端的组成结构。
[73] 图 5是本发明实施例一种实现节目隐藏的系统的结构框图。 如图 5所示， 该系统 包括： 总前端 501和接收端子系统 502， 其中：
[74] 总前端 501， 用于向接收端子系统 502下发总 EPG, 该总 EPG中包含子 EPG标识 以及与各子 EPG标识对应的子 EPG。
[75] 接收端子系统 502， 用于获取子 EPG标识， 并从总前端发送的总 EPG中査找出 与所获取的子 EPG标识对应的子 EPG, 根据该子 EPG进行节目隐藏。
[76] 在图 5所示的系统中， 接收端子系统 502可以包括： 一个以上的分前端和各分前 端管理范围内的用户机顶盒。 此吋， 子 EPG标识为分前端代码， 并且其中： 分前 端， 用于接收总前端发送的总 EPG, 并将所接收的总 EPG以及自身的代码发送给 自身管理范围内的用户机顶盒； 用户机顶盒， 用于从所接收的总 EPG中査找出与 所接收的分前端代码对应的子 EPG, 根据该子 EPG进行节目隐藏。
[77] 在图 5所示的系统中， 接收端子系统 502可以包括： 一个以上的分前端和各分前 端管理范围内的用户机顶盒。 此吋， 子 EPG标识为分前端代码， 并且其中： 分前 端， 用于从所接收的总 EPG中过滤除指定子 EPG以外的所有子 EPG, 然后将过滤 后的总 EPG下发给自身管理范围内的用户机顶盒； 所述指定子 EPG是与所述分前 端的代码对应的子 EPG; 用户机顶盒， 用于接收分前端发送的总 EPG, 并根据该 总 EPG搜索节目。
[78] 在图 5所示的系统中， 接收端子系统 502也可以包括： 用户机顶盒， 此吋子 EPG 标识为特征值， 并且： 所述用户机顶盒用于获取特征值， 并接收前端发送的总 E PG; 从所接收的总 EPG中査找出与所获取的特征值对应的子 EPG, 根据该子 EPG 进行节目隐藏。
[79] 图 6是本发明实施例一种机顶盒的结构框图。 如图 6所示， 该机顶盒包括： 特征 值获取模块 601， EPG接收模块 602和节目隐藏模块 603， 其中，
[80] 特征值获取模块 601， 用于获取特征值， 并发送给节目隐藏模块 603; [81] EPG接收模块 602， 用于接收包含所述特征值以及与该特征值对应的子 EPG的 总 EPG, 并发送给节目隐藏模块 603;
[82] 节目隐藏模块 603， 用于从所接收的总 EPG中査找出与所接收的特征值对应的 子 EPG， 根据该子 EPG进行节目隐藏。
[83] 图 7是本发明实施例一种总前端的结构框图。 如图 7所示， 该总前端包括： 特征 值分配模块 701和 EPG发送模块 702， 其中，
[84] 特征值分配模块 701， 用于为不同的用户机顶盒分配不同的特征值， 并将所分 配的特征值发送给 EPG发送模块；
[85] EPG发送模块 702， 用于向用户机顶盒发送总 EPG, 该总 EPG中包含所述分配的 特征值以及与各个特征值对应的子 EPG。
[86] 图 8是本发明实施例一种分前端的结构框图。 如图 8所示， 该分前端包括过滤模 块 801。 过滤模块 801， 用于接收包含分前端的代码以及与各分前端代码对应的 子 EPG的总 EPG, 从所接收的总 EPG中过滤除指定子 EPG以外的所有子 EPG, 然 后将过滤后的总 EPG下发给自身管理范围内的用户机顶盒； 所述指定子 EPG是与 该分前端的代码对应的子 EPG。
[87] 综上所述， 本发明实施中， 通过总前端向各个地区的分前端发送包含各个地区 的区域码以及与各个地区的区域码对应的子 EPG的总 EPG; 各个地区的分前端将 所接收的总 EPG以及自身的区域码发送给本区域内的用户机顶盒； 用户机顶盒从 所接收的总 EPG中査找出与所接收的区域码对应的子 EPG, 根据该子 EPG进行节 目隐藏的技术方案， 实现了区域性的节目隐藏， 从而可以在不同的地区实行不 同节目收看限制。 此外， 通过用户机顶盒获取特征值， 并接收前端发送的包含 所述特征值以及与该特征值对应的子 EPG总 EPG, 从总 EPG中査找出与所获取的 特征值对应的子 EPG, 根据该子 EPG进行节目隐藏的技术方案， 对特定用户实现 了节目隐藏， 弥补了区域性节目隐藏方式的不足； 分前端从总 EPG中过滤除属于 本区域的子 EPG以外的所有的子 EPG, 然后再将过滤后总 EPG下发给用户机顶盒 的技术方案， 从源头实现了节目隐藏。
[88] 以上所述， 仅为本发明的较佳实施例而已， 并非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 t

Claims

权利要求书
[1] 一种实现节目隐藏的方法， 其特征在于， 包括：
获取子电子节目指南 EPG标识；
接收总前端下发的总电子节目指南 EPG, 该总 EPG中包含子 EPG标识以及 与各子 EPG标识对应的子 EPG；
从所接收的总 EPG中査找出与所获取的子 EPG标识对应的子 EPG;
根据査找出的子 EPG进行节目隐藏。
[2] 如权利要求 1所述的方法， 其特征在于，
所述子 EPG标识是分前端代码；
所述获取子 EPG标识以及接收总前端下发的总 EPG包括： 分前端接收总前 端发送的总 EPG, 该总 EPG中包含各个分前端的代码以及与各个分前端代 码对应的子 EPG, 分前端将所接收的总 EPG以及自身的代码发送给自身管 理范围内的用户机顶盒；
所述从接收的总 EPG中査找出与所获取的子 EPG标识对应的子 EPG, 根据 所査找出的子 EPG进行节目隐藏包括：
用户机顶盒从所接收的总 EPG中査找出与所接收的分前端代码对应的子 EP
G, 并根据该子 EPG进行节目隐藏。
[3] 如权利要求 2所述的方法， 其特征在于， 所述各个分前端分别管理不同地区 的用户机顶盒； 所述分前端代码是该分前端所管理地区的区域码。
[4] 如权利要求 3所述的方法， 其特征在于，
所述总 EPG中包含： 各个地区的区域码与特征值之间的对应关系， 以及与 所述各个特征值对应的子 EPG;
所述用户机顶盒从所接收的总 EPG中査找出与所接收的分前端代码对应的 子 EPG包括：
所述用户机顶盒从所接收的总 EPG中査找出与所接收的区域码对应的特征 值， 再从该总 EPG中査找出与该特征值对应的子 EPG。
[5] 如权利要求 3所述的方法， 其特征在于，
所述总 EPG中进一步包含与总前端对应的区域码； 所述分前端将所接收的总 EPG以及自身的代码发送给自身管理范围内的用 户机顶盒包括：
各个地区的分前端将所接收的总 EPG中的与总前端对应的区域码修改为自 身的区域码后， 发送给本区域内的用户机顶盒。
[6] 如权利要求 1所述的方法， 其特征在于，
所述子 EPG标识是分前端代码；
所述接收总前端下发的总 EPG包括： 分前端接收总前端发送的总 EPG; 所述从接收的总 EPG中， 査找出与所获取的子 EPG标识对应的子 EPG, 根 据所査找出的子 EPG进行节目隐藏包括：
分前端从所接收的总 EPG中过滤除指定子 EPG以外的所有子 EPG, 然后将 过滤后的总 EPG下发给自身管理范围内的用户机顶盒； 所述指定子 EPG是 与该分前端的代码对应的子 EPG。
[7] 如权利要求 1所述的方法， 其特征在于，
所述子 EPG标识为特征值；
所述获取子 EPG标识以及接收总前端下发的总 EPG包括： 用户机顶盒获取 特征值， 并接收总前端发送的总 EPG;
所述从所接收的总 EPG中査找出与所获取的子 EPG标识对应的子 EPG, 根 据所査找出的子 EPG进行节目隐藏包括：
用户机顶盒从所接收的总 EPG中査找出与所获取的特征值对应的子 EPG, 根据该子 EPG进行节目隐藏。
[8] 如权利要求 7所述的方法， 其特征在于， 所述用户机顶盒获取特征值包括： 用户机顶盒从包含所述特征值的智能卡中读取该特征值。
[9] 如权利要求 1所述的方法， 其特征在于， 所述根据所査找出的子 EPG进行节 目隐藏包括：
隐藏所有不包含在该子 EPG中的节目； 或
隐藏所有包含在该子 EPG中的节目。
[10] 一种实现节目隐藏的系统， 其特征在于， 该系统包括： 总前端和接收端子 系统， 其中， 总前端， 用于向接收端子系统下发总 EPG， 该总 EPG中包含子 EPG标识以 及与各子 EPG标识对应的子 EPG；
接收端子系统， 用于获取子 EPG标识， 并从总前端发送的总 EPG中査找出 与所获取的子 EPG标识对应的子 EPG, 根据所査找出的子 EPG进行节目隐 藏。
[11] 如权利要求 10所述的系统， 其特征在于， 所述接收端子系统包括： 一个以 上的分前端和各分前端管理范围内的用户机顶盒， 所述子 EPG标识为分前 端代码， 其中，
所述分前端， 用于接收总前端发送的总 EPG, 并将所接收的总 EPG以及自 身的代码发送给自身管理范围内的用户机顶盒；
所述用户机顶盒， 用于从所接收的总 EPG中査找出与所接收的分前端代码 对应的子 EPG, 根据所査找出的子 EPG进行节目隐藏。
[12] 如权利要求 10所述的系统， 其特征在于， 所述接收端子系统包括： 一个以 上的分前端和各分前端管理范围内的用户机顶盒， 所述子 EPG标识为分前 端代码， 其中，
所述分前端， 用于从所接收的总 EPG中过滤除指定子 EPG以外的所有子 EP G, 然后将过滤后的总 EPG下发给自身管理范围内的用户机顶盒； 所述指 定子 EPG是与所述分前端的代码对应的子 EPG;
所述用户机顶盒， 用于接收分前端发送的总 EPG, 并根据所査找出的总 EP G搜索节目。
[13] 如权利要求 11所述的系统， 其特征在于， 所述接收端子系统包括： 用户机 顶盒， 所述子 EPG标识为特征值；
所述用户机顶盒， 用于获取特征值， 并接收前端发送的总 EPG; 从所接收 的总 EPG中査找出与所获取的特征值对应的子 EPG, 根据所査找出的子 EP G进行节目隐藏。
[14] 一种机顶盒， 其特征在于， 该机顶盒包括： 特征值获取模块， EPG接收模 块和节目隐藏模块， 其中，
所述特征值获取模块， 用于获取特征值， 并发送给所述节目隐藏模块； 所述 EPG接收模块， 用于接收包含所述特征值以及与该特征值对应的子 EP G的总 EPG, 并发送给所述节目隐藏模块；
所述节目隐藏模块， 用于从所接收的总 EPG中査找出与所接收的特征值对 应的子 EPG, 根据所査找出的子 EPG进行节目隐藏。
[15] 一种总前端， 其特征在于， 该总前端包括： 特征值分配模块和 EPG发送模 块， 其中，
所述特征值分配模块， 用于为不同的用户机顶盒分配不同的特征值， 并将 所分配的特征值发送给所述 EPG发送模块；
所述 EPG发送模块， 用于向用户机顶盒发送总 EPG, 该总 EPG中包含所述 分配的特征值以及与各个特征值对应的子 EPG。
[16] 一种分前端， 其特征在于， 该分前端包括：
过滤模块， 用于接收包含分前端的代码以及与各分前端代码对应的子 EPG 的总 EPG, 从所接收的总 EPG中过滤除指定子 EPG以外的所有子 EPG, 然后 将过滤后的总 EPG下发给自身管理范围内的用户机顶盒； 其中， 所述指定 子 EPG是与该分前端的代码对应的子 EPG。
PCT/CN2008/072743 2007-10-23 2008-10-17 Method, system, and apparauts for realizing program hidding WO2009065332A1 (en)

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