WO2012122818A1 - 一种业务入口的寻址方法、相关终端和系统 - Google Patents

一种业务入口的寻址方法、相关终端和系统 Download PDF

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Publication number
WO2012122818A1
WO2012122818A1 PCT/CN2011/082388 CN2011082388W WO2012122818A1 WO 2012122818 A1 WO2012122818 A1 WO 2012122818A1 CN 2011082388 W CN2011082388 W CN 2011082388W WO 2012122818 A1 WO2012122818 A1 WO 2012122818A1
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WIPO (PCT)
Prior art keywords
service
information
broadcast
entry address
address
Prior art date
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PCT/CN2011/082388
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English (en)
French (fr)
Inventor
胡子付
蒋勇
Original Assignee
华为技术有限公司
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Publication of WO2012122818A1 publication Critical patent/WO2012122818A1/zh

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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]
    • H04N21/20—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
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2362—Generation or processing of Service Information [SI]
    • 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

Definitions

  • the present invention relates to the field of digital television communication, and in particular, to a method for addressing a service portal, a related terminal, and a system.
  • EPG Electronic Program Guide
  • the distributed system usually consists of an EPG scheduling server and several EPG servers.
  • the EPG server provides an electronic program menu service.
  • the EPG scheduling server handles the EPG scheduling request when the user terminal is powered on, and monitors the running status and load status of each EPG server in real time. .
  • the EPG scheduling server When the user terminal requests the video on demand (VOD, Video On Demand) service, the EPG scheduling server needs to first request scheduling, and the EPG scheduling server selects the user terminal according to the location of the user terminal and the load status of each EPG server. An EPG server that is lightly loaded and operates normally, and sends the EPG server address to the user terminal. After obtaining the address of the target EPG server, the user terminal can initiate a VOD service request to the target EPG server, such as browsing the EPG page. Choose a movie or watch a show on demand.
  • VOD Video On Demand
  • the user terminal requests scheduling from the EPG scheduling server, and the user terminal needs to know the address of the EPG scheduling server when powering on, and requests scheduling from the EPG scheduling server through the address.
  • the traditional method is to manually configure the EPG scheduling server address on the user terminal, such as an Internet Protocol (IP) address, port number, and/or domain name of the EPG scheduling server, so that the user terminal can be powered on.
  • IP Internet Protocol
  • the ordinary user cannot complete the above configuration operation by himself, and requires the engineering technician to come to the door to configure the installation workload.
  • the EPG scheduling server is configured to connect to the EPG scheduling server, so that the user cannot enjoy the normal interactive service. Summary of the invention
  • Embodiments of the present invention provide a method for addressing a service entry, a related terminal, and a system for realizing automatic addressing of a service entry address by a digital television terminal.
  • the embodiment of the present invention provides the following technical solutions:
  • a method of addressing a service portal including:
  • the broadcast information broadcasted by the service address broadcast system, where the broadcast information indicates a channel occupied by the service address broadcast system when the service entry address information is broadcasted;
  • a method of addressing a service portal including:
  • the service address advertisement system broadcasts the service entry address information on the designated channel
  • the service address broadcast system broadcasts broadcast information, wherein the broadcast information indicates a frequency point and a service identifier of the designated channel.
  • a digital television terminal comprising:
  • a first acquiring unit configured to acquire broadcast information broadcast by the service address broadcast system, where the broadcast information indicates a channel occupied by the service address broadcast system for broadcasting service entry address information;
  • a second acquiring unit configured to obtain the service entry address information from a channel indicated by the advertisement information acquired by the first acquiring unit
  • an access unit configured to access the corresponding service portal server according to the service entry address information acquired by the second acquiring unit.
  • a service address distribution system comprising:
  • a service entry address broadcaster configured to broadcast service entry address information on a designated channel
  • a broadcast server configured to broadcast broadcast information, wherein the broadcast information indicates a frequency point and a service identifier of the designated channel.
  • the service address broadcast information is broadcasted by the service address broadcast system, and the broadcast information of the channel occupied when the service entry address information is broadcasted is broadcasted, so that the digital television terminal can obtain the broadcast information and according to the broadcast information.
  • the service entry address information is obtained from the corresponding channel, and the automatic addressing process of the service entry address is completed.
  • the technical solution provided by the embodiment of the present invention realizes the automatic addressing of the service entry address by the digital television terminal.
  • the engineering personnel can no longer need to count each number.
  • the word TV terminal is configured with the service entry address, which greatly reduces the installation workload.
  • the service entry address is changed, only the engineering personnel can modify the service entry address information of the advertisement, which has high security and High reliability features.
  • FIG. 1 is a schematic flowchart of an embodiment of a method for addressing a service portal according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of another embodiment of a method for addressing a service portal according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of another embodiment of a method for addressing an service portal according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a digital television terminal according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a service address distribution system according to an embodiment of the present invention.
  • the embodiment of the invention provides a method for addressing a service portal, a related terminal and a system.
  • an embodiment of the method for addressing a service portal in the embodiment of the present invention includes:
  • the digital television terminal obtains the broadcast information broadcast by the service address broadcast system
  • the foregoing broadcast information indicates a channel occupied by the service address broadcast system when the service entry address information is broadcasted; for example, the broadcast information may include channel information capable of uniquely corresponding to one channel, and the digital television terminal may determine the channel according to the channel information.
  • the channel information is specifically the frequency of the channel and the service identifier.
  • the service address advertisement system may carry the above broadcast information in a network information table. Broadcasting in (NIT, Network Information Table), if the above advertisement information can be set in the private description field of the NIT table, of course, the above advertisement information can also be carried in other program-specific information and/or monthly service information ( The table of PSI/SI, Program Specific Information/Service Information) is not limited here.
  • the service entry address information may include an EPG scheduling server address.
  • the IP address, port number, and/or domain name of the EPG scheduling server, etc. may also be the service entry address information of other service ingress servers in the two-way digital television system, which is not limited herein.
  • the digital television terminal obtains the service entry address information from the channel indicated by the advertisement information.
  • the advertisement information may include a frequency point and a service identifier indicating a channel occupied by the advertisement service entry address information.
  • a frequency point usually includes a plurality of programs, each program is broadcasted on a different channel, and each program corresponds to a different service identifier (SID, Service IDentity), and the digital television terminal can be based on the broadcast information.
  • the frequency of the frequency is locked, and the service entry address information is obtained from the channel indicated by the service identifier according to the service identifier in the advertisement information, for example, the frequency point in the broadcast information may be first adjusted to the corresponding frequency point and the frequency is locked.
  • the service entry address information may be carried in a private table, and the digital television terminal may obtain the private table according to the frequency point and the service identifier in the advertisement information, and obtain the foregoing by parsing the private table.
  • the service entry address information may be: performing frequency locking according to a frequency point in the broadcast information, and obtaining a program association table (PAT, Program Association Table) from the frequency point; according to the service identifier in the broadcast information Obtaining a package identifier (PID, Pocket IDentity) of a program map table (PMT) in the obtained PAT table, where the PMT table includes private table identification information (such as a private table PID) of the private table.
  • PID program association table
  • the service entry address information may be carried in other data messages with specific identifiers in the broadcast stream, or the service entry address information may be carried in the extended field by extending the fields in the existing table. limited.
  • the digital television terminal accesses the service portal server;
  • the digital television terminal can obtain the service entry address information, and then according to The obtained service entry address information is initiated to the corresponding service portal server.
  • the service entry address information includes an EPG scheduling server address (such as an IP address, a port number, and/or a domain name of the EPG scheduling server)
  • the obtained service entry address may be obtained.
  • the information accesses the EPG scheduling server, and requests scheduling from the EPG scheduling server.
  • the above-mentioned digital television terminal may be a set-top box or a digital television integrated machine, or may be other digital television terminals that support the function of the interactive television, which is not limited herein.
  • the service address broadcast system may be composed of two separate modules (such as a broadcast module and a broadcast module), and the broadcast module is configured to broadcast the service entry address information on a designated channel, and the broadcast module is configured to broadcast the broadcast information, or, of course,
  • the broadcast module may be an EPG one-way server, and the broadcast module may be an EPG one-way server sub-module or a modulator (QAM, Quadrature).
  • Amplitude Modulation, the edge modulator (IPQ AM) or a sub-module of the VOD service system, or a separate module, is not limited herein.
  • the service address broadcast information is broadcasted by the service address broadcast system, and the broadcast information of the channel occupied when the service entry address information is broadcasted is broadcasted, so that the digital television terminal can obtain the broadcast information and broadcast the information from the broadcast information.
  • the service entry address information is obtained on the indicated channel, and the automatic addressing process of the service entry address is completed.
  • the technical solution provided by the embodiment of the invention realizes the automatic addressing of the service entry address by the digital television terminal.
  • the engineering personnel can eliminate the need to configure the service entry address for each digital television terminal, thereby greatly reducing the installation workload, and On the one hand, when the service entry address is changed, only the engineering personnel can modify the service entry address information of the advertisement, which has the characteristics of high security and high reliability.
  • the addressing method of the service portal in the embodiment of the present invention is described in detail in a specific application scenario. It is assumed that the advertisement information in the embodiment of the present invention is carried by the NIT table, and the service entry address information is carried by the private table, and the broadcast information includes the frequency point and the service identifier.
  • the digital television terminal is a set-top box, and the specific steps include:
  • the set top box is powered on
  • the set top box receives the NIT table.
  • the service address advertisement system can periodically broadcast the NIT table carrying the broadcast information to ensure that the NIT table can be received by the set top box that is powered on at different times.
  • the above advertisement information indicates the service address The frequency and service identifier of the channel occupied by the broadcast system when the service entry address information is broadcasted. Since the service address distribution system may periodically broadcast the above NIT table, after the power-on of the set-top box, the NIT table may not be received immediately, and the NIT table may be detected in real time, when the NIT table is received. In the case of the NIT table, step 203 is performed.
  • the set top box parses the received NIT to obtain broadcast information.
  • the set top box parses the NIT table to obtain the above broadcast information carried in the NIT table.
  • the set top box is adjusted to a specified frequency point for frequency locking
  • the set-top box adjusts the frequency indicated by the obtained broadcast information to the corresponding frequency point for frequency locking. 205.
  • the set top box acquires a PAT table.
  • the PAT table is the root of all tables with a PID value of 0x00.
  • the set top box can obtain the PAT table from the frequency point after locking the frequency point.
  • the set top box acquires a PMT table.
  • the set-top box can find the PMT table of the desired program from the PAT table. If it is assumed that the PID value of the corresponding PMT table of the program 1 is 0x16, the set-top box finds the PMT table of the program 1 according to the PID value.
  • the PMT table usually contains multiple digital code streams (such as video stream, audio stream and data stream), and each digital stream has a unique PID corresponding to it.
  • the private entry table is used to carry the service entry address information
  • the private table identifier information of the private table (such as the PID of the private table) may be carried by using the PMT table.
  • the set top box can obtain the PID of the PMT table carrying the private table identification information from the PAT table according to the obtained service identifier indicated by the advertisement information, and acquire the corresponding PMT table according to the PID.
  • the set top box obtains the private table according to the private table identifier information in the obtained PMT table. After obtaining the PMT table, the set top box may find the private table identifier information from the PMT table, and obtain the corresponding private table according to the private table identifier information. .
  • the PSI standard defines that the table whose PID value is in the range of 0x80-OxFF is regarded as a private table. Therefore, in actual applications, the private table identification information may be the PID of the private table, and the system may obtain the above PMT table. After searching for the PID in the range of 0x80-OxFF in the PMT table, the searched PID is the PID of the private table, and the private table can be obtained according to the PID of the private table.
  • the set top box parses the obtained private table, and obtains service entry address information. After obtaining the private table, the set top box can parse the private table, and obtain the service entry address information from the data segment of the private table.
  • system and the set-top box can also reserve the Table_ID of the private table (multiple entries may exist in the private table, and each entry is indicated by a Table_ID), and the set-top box can obtain the Table_ID according to the predetermined Table_ID after obtaining the private table.
  • the entry that carries the service entry address information is directly located, so that the service entry address information can be obtained more quickly.
  • service entry address information may include an EPG scheduling server address (such as an IP address, a port number, and/or a domain name of the EPG scheduling server), and of course, may also be a service of another service ingress server in the two-way digital television system. Entry address information, which is not limited here.
  • the service address broadcast information is broadcasted by the service address broadcast system, and the broadcast information of the channel occupied when the service entry address information is broadcasted is broadcasted, so that the digital television terminal can obtain the broadcast information and according to the broadcast information.
  • the frequency point and service identifier in the call are transferred to the specified frequency point and the service identifier to obtain the service entry address information, and the automatic addressing process for the service entry address is completed.
  • the engineering personnel can eliminate the need to configure the service entry address for each digital television terminal, thereby greatly reducing the installation workload, and On the one hand, when the service entry address is changed, only the engineering personnel can modify the service entry address information of the advertisement, which has the characteristics of high security and high reliability.
  • FIG. 3 Another embodiment of the method for addressing a service entry in the embodiment of the present invention includes:
  • the service address advertisement system broadcasts service entry address information on a designated channel.
  • the service entry address information that needs to be broadcasted may be configured by the engineering personnel in the service address broadcast system, and the service address broadcast system assembles the service entry address information into a broadcast code stream, and then on the designated channel (by frequency point and service identifier) The symbol indicates) the broadcast.
  • the service address advertisement system may carry the foregoing service entry address information in a private table, and use the private table identification information to identify, so that the digital television terminal can determine that the private table is obtained and obtained.
  • the service address broadcast system can also use the service.
  • the entry address information is carried in the data message with the specific identifier in the broadcast stream, or the service entry address information is carried in the extended field by extending the field in the existing table, which is not limited herein.
  • the service address advertisement system can periodically broadcast a code stream including the service entry address information, the code After being multiplexed and modulated, the stream is broadcast on a corresponding channel through a wired cable (such as Hybrid Fiber Coaxial (HFC)).
  • a wired cable such as Hybrid Fiber Coaxial (HFC)
  • the service entry address information may include an EPG scheduling server address (such as an IP address, a port number, and/or a domain name of the EPG scheduling server), and of course, may be another service ingress server in the two-way digital television system.
  • EPG scheduling server address such as an IP address, a port number, and/or a domain name of the EPG scheduling server
  • Business entry address information which is not limited here.
  • the service address broadcast system broadcasts the broadcast information
  • the service address advertisement system may broadcast the broadcast information indicating the channel (eg, may include a frequency point indicating the channel and a service identifier channel) to the digital television receiving terminal after the channel specifying the service entry address information is broadcasted, so as to facilitate the number
  • the television terminal obtains the service entry address information from the corresponding channel, or the service address advertisement system may broadcast the broadcast information indicating the channel to the digital television receiving terminal by detecting the channel on which the service entry address information is broadcasted, which is not limited herein. .
  • the service address advertisement system may carry the above-mentioned advertisement information in an NIT table, and after being multiplexed and modulated, the NIT table may be broadcasted to each digital television terminal through a cable (such as HFC), of course, the service address is broadcasted.
  • the system may also carry the foregoing advertisement information in other PSI/SI-based tables, which is not limited herein.
  • the above-mentioned digital television terminal may be a set-top box or a digital television integrated machine, or may be other digital television terminals that support the function of the interactive television, which is not limited herein.
  • the service address broadcast system may be composed of two separate modules (such as a broadcast module and a broadcast module), and the broadcast module is configured to broadcast the service entry address information on the designated channel, and the broadcast module is configured to broadcast the broadcast information, of course, It may be a system composed of a single module that can implement all the above functions.
  • the foregoing broadcast module may be an EPG one-way server, and the foregoing broadcast module may be an EPG one-way server sub-module, or may be QAM, IPQAM or It is a sub-module of the VOD service system, or it can be a separate module, which is not limited here.
  • the service address broadcast information is broadcasted by the service address broadcast system, and the broadcast frequency information of the channel occupied by the broadcast service entry address information and the service identifier is broadcasted, so that the digital television terminal can obtain the broadcast information.
  • the information is broadcasted, and the service entry address information is obtained according to the broadcasted information to the specified frequency and service identifier, and the automatic addressing process of the service entry address is completed.
  • the technical solution provided by the embodiment of the present invention realizes the automatic addressing of the service entry address by the digital television terminal.
  • the engineering personnel can no longer configure the service entry address for each digital television terminal, which is extremely The installation workload is reduced.
  • the service entry address is changed, only the engineering personnel can modify the service entry address information of the advertisement, which has the characteristics of high security and high reliability.
  • the advertisement information in the embodiment of the present invention is carried by the NIT table, and the service entry address information includes an EPG scheduling server address (such as an IP address, a port number, and/or a domain name of the EPG scheduling server), and is carried by the private table, and the advertisement information includes Frequency and service identifier, the digital TV terminal is a set-top box, please refer to Figure 4, including:
  • the service address broadcast system broadcasts, on the designated channel, an EPG scheduling server address service entry address information.
  • the service address broadcast system broadcasts an NIT table
  • the bearer in the NIT table includes broadcast information, and the broadcast information includes a frequency point and a service identifier of a channel occupied when the service address broadcast system broadcasts the service entry address information.
  • the set top box is powered on;
  • the set top box receives the NIT table and parses the information to obtain the broadcast information.
  • the set-top box acquires and parses the private table according to the frequency point and the service identifier in the advertisement information, and obtains service entry address information.
  • the set top box sends a request scheduling message to the EPG scheduling server.
  • the set-top box After the set-top box obtains the service entry address information including the EPG scheduling server address, it can send a request scheduling message to the EPG scheduling server by using the obtained EPG scheduling service address when the VOD service is to be performed.
  • the EPG scheduling server processes the scheduling request of the set top box.
  • the EPG dispatching server selects a lightly loaded and functioning EPG server for the set top box according to the location of the set top box and the load status of each EPG server.
  • the EPG scheduling server returns a target EPG server address to the set top box.
  • the EPG dispatch server sends the address of the EPG server to the set top box.
  • the set top box sends a login EPG request message to the target EPG server by using the target EPG server address.
  • the target EPG server returns an EPG page to the set top box
  • the set top box performs a VOD service operation.
  • VOD service operations such as browsing the EPG page, selecting a movie, or watching a program on demand.
  • the foregoing service address broadcast system may be composed of two separate modules, one module is used to broadcast the service entry address information on the designated channel, and the other module is used to broadcast the broadcast information, or, of course, may be A system consisting of a single module that implements all of the above functions is not limited herein.
  • the service address broadcast information is broadcasted by the service address broadcast system, and the broadcast information including the frequency of the channel occupied by the broadcast service entry address information and the service identifier is broadcasted, so that the digital television terminal can obtain the broadcast information.
  • the information is broadcasted, and the service entry address information is obtained according to the broadcasted information to the specified frequency point and the service identifier, and the automatic addressing process of the service entry address is completed.
  • the technical solution provided by the embodiment of the present invention realizes the automatic addressing of the service entry address by the digital television terminal.
  • the engineering personnel can eliminate the need to configure the service entry address for each digital television terminal, thereby greatly reducing the installation workload, and On the one hand, when the service entry address is changed, only the engineering personnel can modify the service entry address information of the advertisement, which has the characteristics of high security and high reliability.
  • the digital television terminal in the embodiment of the present invention includes:
  • the first obtaining unit 501 is configured to obtain the broadcast information broadcast by the service address broadcast system, where the broadcast information indicates a channel occupied by the service address broadcast system when the service portal address information is broadcasted (eg, may include a frequency point indicating the channel and a service identifier) Symbol);
  • the first obtaining unit 501 may include: a receiving unit and a parsing acquiring unit, where the pick-up unit is configured to receive the broadcast information of the broadcast information transmitted by the service broadcast system.
  • the NIT table is configured to parse the received NIT table to obtain the broadcast information.
  • the second obtaining unit 502 is configured to obtain service entry address information from the channel indicated by the foregoing broadcast information.
  • the second obtaining unit 502 is specifically configured to obtain the service entry address information according to the frequency point and the service identifier in the advertisement information, where In an actual application, the second obtaining unit may adjust the frequency according to the frequency information in the broadcast information. And the frequency band is locked, the PAT table is obtained, and the service entry address information is obtained from the obtained PAT table according to the service identifier in the advertisement information; further, if the service entry address information is carried in the private table, the second The obtaining unit 502 may specifically include:
  • a first sub-acquisition unit configured to adjust a frequency point in the broadcast information to a corresponding frequency point and lock the frequency to obtain a PAT table.
  • a second sub-acquisition unit configured to acquire a PID of the PMT table from the obtained PAT table according to the service identifier in the advertisement information, where the PMT table includes private table identification information indicating the private table;
  • a third sub-acquisition unit configured to obtain a PMT table according to the acquired PID of the PMT table
  • a fourth sub-acquisition unit configured to obtain the private table according to the private table identification information included in the obtained PMT table
  • the fifth sub-acquisition unit is configured to parse the obtained private table to obtain the service entry address information.
  • the access unit 503 is configured to access the corresponding service portal server according to the service entry address information acquired by the second obtaining unit 502.
  • the service entry address information includes an EPG scheduling server address (such as an IP address, a port number, and/or a domain name of the EPG scheduling server)
  • the obtained service entry address may be obtained.
  • the information accesses the EPG scheduling server, and requests scheduling from the EPG scheduling server.
  • the service address broadcast system may be composed of two separate modules (such as a broadcast module and a broadcast module), and the broadcast module is configured to broadcast the service entry address information on the designated channel, and the broadcast module is configured to broadcast the broadcast information, of course, It may be a system composed of a single module that can implement all the above functions.
  • the foregoing broadcast module may be an EPG one-way server, and the foregoing broadcast module may be an EPG one-way server sub-module, or may be QAM, IPQAM or It is a sub-module of the VOD service system, or it can be a separate module, which is not limited here.
  • the digital television terminal of this embodiment may be used as the digital television terminal in the foregoing method embodiment, and may be used to implement all the technical solutions in the foregoing method embodiments, and the functions of the respective functional modules may be according to the foregoing method embodiments.
  • the service address broadcast information is broadcasted by the service address broadcast system, and the broadcast frequency information of the channel occupied by the broadcast service entry address information and the service identifier is broadcasted, so that the digital television terminal can obtain the broadcast information.
  • the information is broadcasted, and the service entry address information is obtained according to the broadcasted information to the specified frequency and service identifier, and the automatic addressing process of the service entry address is completed.
  • the technical solution provided by the embodiment of the present invention realizes the automatic addressing of the service entry address by the digital television terminal.
  • the engineering personnel can eliminate the need to configure the service entry address for each digital television terminal, thereby greatly reducing the installation workload, and
  • the service entry address is changed, only the engineering personnel can modify the service entry address information of the advertisement, which has the characteristics of high security and high reliability.
  • the service address distribution system 600 in the embodiment of the present invention includes:
  • the service entry address advertiser 601 is configured to broadcast the service entry address information on the designated channel.
  • the service entry address advertiser 601 may carry the service entry address information in a private table for broadcast.
  • the service entry address information is carried in the data message with the specific identifier in the broadcast stream, or the service entry address information is carried in the field by extending the field in the existing table, which is not limited herein.
  • a broadcast server 602 configured to broadcast broadcast information
  • the advertisement information indicates a frequency point and a service indicator of the specified channel.
  • the broadcast server 602 may carry the foregoing broadcast information in a ⁇ table for broadcast.
  • the broadcast information may be carried in other PSI/SI-based tables, which is not limited herein.
  • the broadcast server 602 can be, for example, a one-way EPG server or other server with broadcast capabilities. It is to be understood that the service address-initiating address advertiser 601 may be a sub-module of the broadcast server 602, or may be a module in parallel with the broadcast server 602, which is not limited herein.
  • service address advertisement system 600 in this embodiment may be used as the service address advertisement system in the foregoing method embodiment, and may be used to implement all the technical solutions in the foregoing method embodiments, and the functions of the respective function modules may be based on the foregoing.
  • the method in the method embodiment is specifically implemented. For the specific implementation process, refer to the related description in the foregoing embodiment, and details are not described herein again.
  • the service address broadcast information is broadcasted by the service address broadcast system, and the channel broadcast information occupied when the service entry address information is broadcasted is broadcasted, so that the digital television terminal can obtain the broadcast information and indicate from the broadcast information.
  • the technical solution provided by the embodiment of the invention realizes the automatic addressing of the service entry address by the digital television terminal.
  • the engineering personnel can eliminate the need to configure the service entry address for each digital television terminal, thereby greatly reducing the installation workload, and
  • the service entry address is changed, only the engineering personnel can modify the service entry address information of the advertisement, which has the characteristics of high security and high reliability.
  • the medium can be a read only memory, a random access memory, a magnetic or optical disk, and the like.

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  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Description

一种业务入口的寻址方法、 相关终端和系统
本申请要求于 2011 年 03 月 14 日提交中国专利局、 申请号为 201110060694.4、 发明名称为 "一种业务入口的寻址方法、 相关终端和系统" 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。
技术领域
本发明涉及数字电视通讯领域， 尤其涉及一种业务入口的寻址方法、相关 终端和系统。
背景技术
随着双向数字电视技术的普及， 电子节目菜单（ EPG , Electronic Program Guide )系统被广泛应用到了数字电视系统中，其主要用于完成和用户终端（如 机顶盒）的接口， 为用户终端提供各种业务的索引及导航， 目前多采用的是分 布式 EPG系统。 分布式系统通常由 EPG调度服务器和若干个 EPG服务器组 成， EPG服务器对外提供电子节目菜单服务， EPG调度服务器负责处理用户 终端开机时的 EPG调度请求， 并实时监视各个 EPG服务器的运行状况及负载 状况。 当用户终端请求视频点播（VOD , Video On Demand )业务时， 首先需 要向 EPG调度服务器请求调度， EPG调度服务器根据该用户终端所处的位置 及各 EPG服务器的负载状况， 就近为该用户终端选择一台负载较轻且运行正 常的 EPG服务器， 并将该 EPG服务器的地址发送给该用户终端， 该用户终端 获得目标 EPG服务器的地址后可向目标 EPG服务器发起 VOD业务请求， 如 浏览 EPG页面、 选择影片或回看节目点播等。
上述用户终端向 EPG调度服务器请求调度， 需要用户终端在上电时能够 获知 EPG调度服务器的地址， 通过该地址向 EPG调度服务器请求调度。 传统 的方法是通过在用户终端上手工配置 EPG调度服务器地址， 如可包括 EPG调 度服务器的网际互联协议（IP, Internet Protocol )地址、 端口号和 /或域名等， 使用户终端在上电时能够获知 EPG调度服务器地址， 向 EPG调度服务器请求 调度。 但是， 由于上述配置的过程专业性较强， 普通用户无法自行完成上述配 置操作， 需要工程技术人员上门配置， 安装工作量大， 另一方面， 当 EPG调 度服务器地址发生改变时， 用户终端便无法再通过之前配置好的 EPG调度服 务器地址连接到 EPG调度服务器， 从而使用户无法享受到正常的互动业务。 发明内容
本发明实施例提供了一种业务入口的寻址方法、相关终端和系统， 用于实 现数字电视终端对业务入口地址的自动寻址。
为解决上述技术问题， 本发明实施例提供以下技术方案：
一种业务入口的寻址方法， 包括：
获取业务地址播发系统广播的播发信息， 其中， 上述播发信息指示所述业 务地址播发系统播发业务入口地址信息时占用的信道；
从上述播发信息指示的信道上获取上述业务入口地址信息；
根据上述业务入口地址信息访问相应的业务入口服务器。
一种业务入口的寻址方法， 包括：
业务地址播发系统在指定信道播发业务入口地址信息；
业务地址播发系统广播播发信息， 其中， 上述播发信息指示上述指定信道 的频点和服务标识符。
一种数字电视终端， 其特征在于， 包括：
第一获取单元， 用于获取业务地址播发系统广播的播发信息， 上述播发信 息指示上述业务地址播发系统播发业务入口地址信息时占用的信道；
第二获取单元，用于从上述第一获取单元获取的播发信息指示的信道上获 取上述业务入口地址信息；
访问单元，用于根据上述第二获取单元获取的业务入口地址信息访问相应 的业务入口服务器。
一种业务地址播发系统， 其特征在于， 包括：
业务入口地址播发器， 用于在指定信道播发业务入口地址信息； 广播服务器， 用于广播播发信息， 其中， 上述播发信息指示上述指定信道 的频点和服务标识符。
由上可见， 本发明实施例中由业务地址播发系统播发业务入口地址信息， 并广播指示播发业务入口地址信息时占用的信道的播发信息，使数字电视终端 可获取该播发信息， 并根据播发信息从相应信道上获取该业务入口地址信息， 完成对业务入口地址的自动寻址过程。本发明实施例提供的技术方案实现了数 字电视终端对业务入口地址的自动寻址，一方面， 工程人员可不必再为每个数 字电视终端配置业务入口地址， 极大地减少了安装工作量， 另一方面， 当业务 入口地址改变时，只需由工程人员对播发的业务入口地址信息进行相应修改即 可， 具有高安全性和高可靠性的特点。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施 例或现有技术描述中所需要使用的附图作筒单地介绍，显而易见地， 下面描述 中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲， 在不付 出创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。
图 1为本发明实施例中业务入口的寻址方法一个实施例流程示意图； 图 2为本发明实施例中业务入口的寻址方法另一个实施例流程示意图； 图 3为本发明实施例中业务入口的寻址方法再一个实施例流程示意图； 图 4为本发明实施例中业务入口的寻址方法再一个实施例流程示意图； 图 5为本发明实施例中数字电视终端的结构示意图；
图 6为本发明实施例中业务地址播发系统的结构示意图。
具体实施方式
本发明实施例提供了一种业务入口的寻址方法、 相关终端和系统。
为使得本发明的发明目的、 特征、 优点能够更加的明显和易懂， 下面将结 合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描 述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而非全部实施例。 基 于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
下面对本发明实施例中的一种业务入口的寻址方法进行描述， 请参阅图 1 , 本发明实施例中业务入口的寻址方法的一个实施例包括：
101、 数字电视终端获取业务地址播发系统广播的播发信息；
其中，上述播发信息指示了业务地址播发系统播发业务入口地址信息时占 用的信道； 例如， 播发信息可包含能够唯一对应一个信道的信道信息， 数字电 视终端可以根据该信道信息确定信道。在本发明的一个实施例中，信道信息具 体为信道的频点和服务标识符。
在实际应用中， 业务地址播发系统可将上述播发信息承载在网络信息表 ( NIT, Network Information Table ) 中进行广播， 如可将上述播发信息设置在 NIT表的私有描述字段中， 当然， 也可将上述播发信息承载在其它基于节目专 用信息和 /或月良务信息 ( PSI/SI, Program Specific Information/Service Information ) 的表中， 此处不作限定。
在一种应用场景下， 上述业务入口地址信息可包括 EPG调度服务器地址
(如 EPG调度服务器的 IP地址、 端口号和 /或域名等）， 当然， 也可以是双向 数字电视系统中其它业务入口服务器的业务入口地址信息， 此处不作限定。
102、 数字电视终端从播发信息指示的信道上获取业务入口地址信息； 在一种应用场景下，上述播发信息可包含指示播发业务入口地址信息占用 的信道的频点和服务标识符。 在实际应用中， 一个频点通常包含多个节目， 每 个节目在不同的信道上播发， 且每个节目对应于不同的服务标识符 （SID , Service IDentity ),数字电视终端可根据播发信息中的频点进行锁频，并根据播 发信息中的服务标识符， 从服务标识符指示的信道上获取业务入口地址信息， 如可先根据播发信息中的频点调到相应的频点并锁频， 获取 PAT表， 根据播 发信息中的服务标识符从获取到的 PAT表中获取上述业务入口地址信息。
在一种应用场景下， 上述业务入口地址信息可承载在私有表中， 则数字电 视终端可根据播发信息中的频点和服务标识符获取该私有表，通过对该私有表 进行解析来获取上述业务入口地址信息， 其具体实现过程可以是： 根据播发信 息中的频点进行锁频， 并从该频点中获取节目关联表 ( PAT , Program Association Table );根据播发信息中的服务标识符从获取到的 PAT表中获取节 目映射表（PMT, Program Map Table ) 的包标识符（PID, Pocket IDentity ), 其中， 该 PMT表中包含指上述私有表的私有表标识信息 （如私有表的 PID ); 根据获取到的 PMT表的 PID, 获取相应的 PMT表； 根据获取到的 PMT表中 的私有表标识信息获取相应的私有表； 对获取到的私有表进行解析， 获取承载 在该私有表中的业务入口地址信息。 当然，也可将上述业务入口地址信息承载 在广播流中其它具有特定标识的数据消息中， 或者通过扩展现有表中的字段， 将上述业务入口地址信息承载在扩展的字段中， 此处不作限定。
103、 数字电视终端访问业务入口服务器；
在步骤 102中，数字电视终端可获取到业务入口地址信息，之后便可根据 获取到的业务入口地址信息， 向相应的业务入口服务器发起访问。 例如， 若该 业务入口地址信息包括 EPG调度服务器地址（如 EPG调度服务器的 IP地址、 端口号和 /或域名等）， 则当数字电视终端请求 VOD业务时， 可根据获取到的 该业务入口地址信息访问 EPG调度服务器， 向该 EPG调度服务器请求调度。
上述数字电视终端可以是机顶盒或数字电视一体机，也可以是其它支持互 动电视功能的数字电视终端， 此处不作限定。
上述业务地址播发系统可以由单独的两个模块 (如播发模块和广播模块） 组成，播发模块用于在指定信道播发上述业务入口地址信息， 广播模块用于广 播上述播发信息， 当然，也可以是由可实现上述所有功能的单一模块构成的系 统， 如在 VOD业务中， 上述广播模块可以是 EPG单向服务器， 上述播发模块 可以是 EPG单向服务器子模块，也可以是调制器（ QAM , Quadrature Amplitude Modulation ), 边缘调制器（ IPQ AM )或者是 VOD业务系统的子模块， 或者还 可以是独立的模块， 此处不作限定。
由上可见， 本发明实施例中由业务地址播发系统播发业务入口地址信息， 并广播指示播发业务入口地址信息时占用的信道的播发信息，使数字电视终端 可获取该播发信息， 并从播发信息指示的信道上获取该业务入口地址信息， 完 成对业务入口地址的自动寻址过程。本发明实施例提供的技术方案实现了数字 电视终端对业务入口地址的自动寻址，一方面， 工程人员可不必再为每个数字 电视终端配置业务入口地址， 极大地减少了安装工作量， 另一方面， 当业务入 口地址改变时，只需由工程人员对播发的业务入口地址信息进行相应修改即可 , 具有高安全性和高可靠性的特点。
为便于更好的理解本发明实施例的技术方案，下面以一具体应用场景对本 发明实施例的业务入口的寻址方法进行详细描述。假设本发明实施例中的播发 信息由 NIT表承载， 业务入口地址信息由私有表承载， 播发信息包含频点和 服务标识符， 数字电视终端为机顶盒， 则可参阅图 2, 具体步骤包括：
201、 机顶盒上电启动；
202、 机顶盒接收 NIT表；
业务地址播发系统可周期性地广播承载播发信息的 NIT表， 以保证不同 时段上电启动的机顶盒均可接收到该 NIT表。 上述播发信息指示了业务地址 播发系统播发业务入口地址信息时占用的信道的频点和服务标识符。 由于业务地址播发系统可能是周期性的广播上述 NIT表， 因此， 在机顶 盒上电启动后， 不一定能即刻接收到该 NIT表， 其可实时地检测是否接收到 该 NIT表， 当接收到该 NIT表时， 则执行步骤 203。
203、 机顶盒对接收到的 NIT进行解析， 获取播发信息；
当接收到上述 NIT表时， 机顶盒对该 NIT表进行解析， 以获取承载在该 NIT表中的上述播发信息。
204、 机顶盒调到指定频点进行锁频；
机顶盒根据获取到的播发信息指示的频点， 调到相应的频点进行锁频。 205、 机顶盒获取 PAT表；
在 PSI标准下， PAT表是所有表的根， 其 PID值为 0x00。 本发明实施例 中， 机顶盒可在锁定频点后， 从该频点中获取到 PAT表。
206、 机顶盒获取 PMT表；
在实际应用中， 机顶盒可从 PAT表中找到所需节目的 PMT表， 如假设节 目 1相应的 PMT表的 PID值为 0x16, 则机顶盒根据该 PID值找到节目 1的 PMT表。 PMT表中通常包含了多个数字码流（如视频码流、 音频码流和数据 码流 ) , 每个数字码流都有唯一的 PID与之对应。
本发明实施例中利用私有表承载上述业务入口地址信息， 可利用 PMT表 携带该私有表的私有表标识信息 （如该私有表的 PID )。 机顶盒根据获取到的 播发信息指示的服务标识符， 可从 PAT表中获取携带上述私有表标识信息的 PMT表的 PID, 并根据该 PID获取相应的 PMT表。
207、 机顶盒根据获取到的 PMT表中的私有表标识信息获取私有表； 机顶盒在获取到上述 PMT表后，可从 PMT表中找到私有表标识信息，根 据该私有表标识信息获取相应的私有表。
需要说明的是， PSI标准定义了 PID的值在 0x80— OxFF范围内的表视为 私有表， 故在实际应用中， 上述私有表标识信息可以是私有表的 PID, 系统可 在获得上述 PMT表后， 在该 PMT表中搜索 0x80— OxFF范围内的 PID, 则搜 索出的 PID即为该私有表的 PID,此时即可根据该私有表的 PID获取该私有表。
208、 机顶盒对获取到的私有表进行解析， 获取业务入口地址信息； 在获取到上述私有表后，机顶盒可对该私有表进行解析，从私有表的数据 段中获取业务入口地址信息。
进一步的， 系统与机顶盒还可预定私有表的 Table_ID (私有表中可能存在 多个表项，每个表项由一个 Table_ID所指示），则机顶盒在获取到该私有表后， 可根据预定的 Table_ID直接定位到承载该业务入口地址信息的表项， 从而可 更快地获取到该业务入口地址信息。
需要说明的是， 上述业务入口地址信息可包括 EPG调度服务器地址（如 EPG调度服务器的 IP地址、 端口号和 /或域名等）， 当然， 也可以是双向数字 电视系统中其它业务入口服务器的业务入口地址信息， 此处不作限定。
由上可见， 本发明实施例中由业务地址播发系统播发业务入口地址信息， 并广播指示播发业务入口地址信息时占用的信道的播发信息，使数字电视终端 可获取该播发信息，并根据播发信息中的频点和服务标识符调到指定的频点和 服务标识符获取该业务入口地址信息， 完成对业务入口地址的自动寻址过程。 本发明实施例提供的技术方案实现了数字电视终端对业务入口地址的自动寻 址， 一方面， 工程人员可不必再为每个数字电视终端配置业务入口地址， 极大 地减少了安装工作量， 另一方面， 当业务入口地址改变时， 只需由工程人员对 播发的业务入口地址信息进行相应修改即可，具有高安全性和高可靠性的特点。
下面对本发明实施例中的一种业务入口的寻址方法进行描述， 请参阅图 3 , 本发明实施例中业务入口的寻址方法的另一个实施例包括：
301、 业务地址播发系统在指定信道播发业务入口地址信息；
在实际应用中，可由工程人员在业务地址播发系统中配置需要播发的业务 入口地址信息， 业务地址播发系统将业务入口地址信息组装成广播码流后，在 指定的信道（由频点和服务标识符指示）播发。 业务地址播发系统可将上述业 务入口地址信息承载在私有表中， 并利用私有表标识信息进行标识， 以便数字 电视终端可判别该是私有表并获取， 当然， 业务地址播发系统也可将上述业务 入口地址信息承载在广播流中其它具有特定标识的数据消息中，或者通过扩展 现有表中的字段， 将上述业务入口地址信息承载在扩展的字段中， 此处不作限 定。
业务地址播发系统可周期性地广播包含该业务入口地址信息的码流，该码 流经过复用、 调制之后， 通过有线电缆（如混合光纤同轴电缆（HFC, Hybrid Fiber Coaxial ) )在相应的信道播发。
在一种应用场景下， 上述业务入口地址信息可包括 EPG调度服务器地址 (如 EPG调度服务器的 IP地址、 端口号和 /或域名等）， 当然， 也可以是双向 数字电视系统中其它业务入口服务器的业务入口地址信息， 此处不作限定。
302、 业务地址播发系统广播播发信息；
业务地址播发系统可在指定好播发业务入口地址信息的信道后，将指示该 信道的播发信息（如可包含指示该信道的频点和服务标识符信道）广播给数字 电视接收终端， 以便于数字电视终端到相应的信道获取该业务入口地址信息， 或者， 业务地址播发系统也可通过检测播发该业务入口地址信息的信道，将指 示该信道的播发信息广播给数字电视接收终端， 此处不作限定。
在实际应用中， 业务地址播发系统可将上述播发信息承载在 NIT表中， 该 NIT表经过复用、 调制之后， 可通过有线电缆（如 HFC ) 广播到各个数字 电视终端， 当然， 业务地址播发系统也可将上述播发信息承载在其它基于 PSI/SI的表中， 此处不作限定。
上述数字电视终端可以是机顶盒或数字电视一体机，也可以是其它支持互 动电视功能的数字电视终端， 此处不作限定。
上述业务地址播发系统可以由单独的两个模块 (如播发模块和广播模块） 组成，播发模块用于实现在指定信道播发上述业务入口地址信息， 广播模块用 于实现广播上述播发信息， 当然， 也可以是由可实现上述所有功能的单一模块 组成的系统， 如在 VOD业务中， 上述广播模块可以是 EPG单向服务器， 上述 播发模块可以是 EPG单向服务器子模块，也可以是 QAM、 IPQAM或者是 VOD 业务系统的子模块， 或者还可以是独立的模块， 此处不作限定。
由上可见， 本发明实施例中由业务地址播发系统播发业务入口地址信息， 并广播指示播发业务入口地址信息时占用的信道的频点和服务标识符的播发 信息，使数字电视终端可获取该播发信息， 并根据播发信息调到指定的频点和 服务标识符获取该业务入口地址信息， 完成对业务入口地址的自动寻址过程。 本发明实施例提供的技术方案实现了数字电视终端对业务入口地址的自动寻 址， 一方面， 工程人员可不必再为每个数字电视终端配置业务入口地址， 极大 地减少了安装工作量， 另一方面， 当业务入口地址改变时， 只需由工程人员对 播发的业务入口地址信息进行相应修改即可，具有高安全性和高可靠性的特点。
为便于更好的理解本发明实施例的技术方案，下面以一具体应用场景对本 发明实施例的业务入口的寻址方法进行详细描述。假设本发明实施例中的播发 信息由 NIT表承载， 业务入口地址信息包括 EPG调度服务器地址（如 EPG调 度服务器的 IP地址、 端口号和 /或域名等）， 且由私有表承载， 播发信息包含 频点和服务标识符， 数字电视终端为机顶盒， 则可参阅图 4, 包括：
401、业务地址播发系统在指定的信道广播包括 EPG调度服务器地址业务 入口地址信息；
402、 业务地址播发系统广播 NIT表；
该 NIT表中承载包含播发信息， 该播发信息包含指示了业务地址播发系 统播发业务入口地址信息时占用的信道的频点和服务标识符。
403、 机顶盒上电启动；
404、 机顶盒接收 NIT表并解析， 获取播发信息；
405、 机顶盒根据播发信息中的频点和服务标识符获取私有表并解析， 获 取业务入口地址信息；
406、 机顶盒向 EPG调度服务器发送请求调度消息；
机顶盒获取包括 EPG调度服务器地址的业务入口地址信息后， 可在要进 行 VOD业务时， 利用获取到的 EPG调度服务地址向该 EPG调度服务器发送 请求调度消息。
407、 EPG调度服务器处理机顶盒的调度请求；
EPG调度服务器根据该机顶盒所处的位置及各 EPG服务器的负载状况， 就近为该机顶盒选择一台负载较轻且运行正常的 EPG服务器。
408、 EPG调度服务器向机顶盒返回目标 EPG服务器地址；
EPG调度服务器将该 EPG服务器的地址发送给机顶盒。
409、 机顶盒利用目标 EPG服务器地址向目标 EPG服务器发送登录 EPG 请求消息；
410、 目标 EPG服务器向机顶盒返回 EPG页面；
411、 机顶盒进行 VOD业务操作； 当机顶盒接收到目标 EPG服务器返回的 EPG 页面后， 便可进行相应的 VOD业务操作， 如浏览 EPG页面、 选择影片或回看节目点播等。
可理解， 上述业务地址播发系统可以由单独的两个模块组成， 一个模块用 于实现在指定信道播发上述业务入口地址信息，另一个模块用于实现广播上述 播发信息， 当然， 也可以是由可实现上述所有功能的单一模块组成的系统， 此 处不作限定。
由上可见， 本发明实施例中由业务地址播发系统播发业务入口地址信息， 并广播包含指示播发业务入口地址信息时占用的信道的频点和服务标识符的 播发信息，使数字电视终端可获取该播发信息， 并根据播发信息调到指定的频 点和服务标识符获取该业务入口地址信息 ,完成对业务入口地址的自动寻址过 程。本发明实施例提供的技术方案实现了数字电视终端对业务入口地址的自动 寻址， 一方面， 工程人员可不必再为每个数字电视终端配置业务入口地址， 极 大地减少了安装工作量， 另一方面， 当业务入口地址改变时， 只需由工程人员 对播发的业务入口地址信息进行相应修改即可，具有高安全性和高可靠性的特 点。
下面对本发明实施例中的数字电视终端进行描述， 请参阅图 5 , 本发明实 施例中的数字电视终端包括：
第一获取单元 501 , 用于获取业务地址播发系统广播的播发信息， 其中， 上述播发信息指示业务地址播发系统播发业务入口地址信息时占用的信道（如 可包含指示该信道的频点和服务标识符）；
在一种应用场景下， 若上述播发信息承载在 NIT表中， 则第一获取单元 501可包括： 接收单元和解析获取单元； 其中， 接送单元用于接收业务播发系 统广播的承载上述播发信息的 NIT表； 解析获取单元用于对接收的 NIT表进 行解析， 获取上述播发信息。
第二获取单元 502, 用于从上述播发信息指示的信道上获取业务入口地址 信息；
在一种应用场景下， 若播发信息包含指示该信道的频点和服务标识符， 则 第二获取单元 502具体用于根据播发信息中的频点和服务标识符，获取业务入 口地址信息，在实际应用中， 第二获取单元可根据播发信息中的频点调到相应 的频段并锁频， 获取 PAT表， 根据播发信息中的服务表示符从获取到的 PAT 表中获取上述业务入口地址信息； 进一步的， 若上述业务入口地址信息承载在 私有表中， 则第二获取单元 502具体可包括：
第一子获取单元，用于根据上述播发信息中的频点调到相应的频点并锁频, 获取 PAT表 ^
第二子获取单元，用于根据上述播发信息中的服务标识符从获取到的 PAT 表中获取 PMT表的 PID, 其中， 该 PMT表包含指示上述私有表的私有表标识 信息；
第三子获取单元， 用于根据获取到的 PMT表的 PID , 获取 PMT表； 第四子获取单元， 用于根据获取到的 PMT表中包含的上述私有表标识信 息， 获取上述私有表；
第五子获取单元， 用于对获取到的私有表进行解析， 获取上述业务入口地 址信息。
访问单元 503 , 用于根据第二获取单元 502获取的业务入口地址信息访问 相应的业务入口服务器；
例如， 若该业务入口地址信息包括 EPG调度服务器地址（如 EPG调度服 务器的 IP地址、 端口号和 /或域名等）， 则当数字电视终端请求 VOD业务时， 可根据获取到的该业务入口地址信息访问 EPG调度服务器， 向该 EPG调度服 务器请求调度。
上述业务地址播发系统可以由单独的两个模块 (如播发模块和广播模块） 组成，播发模块用于实现在指定信道播发上述业务入口地址信息， 广播模块用 于实现广播上述播发信息， 当然， 也可以是由可实现上述所有功能的单一模块 组成的系统， 如在 VOD业务中， 上述广播模块可以是 EPG单向服务器， 上述 播发模块可以是 EPG单向服务器子模块，也可以是 QAM、 IPQAM或者是 VOD 业务系统的子模块， 或者还可以是独立的模块， 此处不作限定。
需要说明的是，本实施例的数字电视终端可以如上述方法实施例中的数字 电视终端， 可以用于实现上述方法实施例中的全部技术方案， 其各个功能模块 的功能可以根据上述方法实施例中的方法具体实现，其具体实现过程可参照上 述实施例中的相关描述， 此处不再赘述。 由上可见， 本发明实施例中由业务地址播发系统播发业务入口地址信息， 并广播指示播发业务入口地址信息时占用的信道的频点和服务标识符的播发 信息，使数字电视终端可获取该播发信息， 并根据播发信息调到指定的频点和 服务标识符获取该业务入口地址信息， 完成对业务入口地址的自动寻址过程。 本发明实施例提供的技术方案实现了数字电视终端对业务入口地址的自动寻 址， 一方面， 工程人员可不必再为每个数字电视终端配置业务入口地址， 极大 地减少了安装工作量， 另一方面， 当业务入口地址改变时， 只需由工程人员对 播发的业务入口地址信息进行相应修改即可，具有高安全性和高可靠性的特点。
下面对本发明实施例中的业务地址播发系统进行描述， 请参阅图 6, 本发 明实施例中的业务地址播发系统 600包括：
业务入口地址播发器 601 , 用于在指定信道播发业务入口地址信息； 在实际应用中，业务入口地址播发器 601可将上述业务入口地址信息承载 在私有表中进行播发， 当然，也可将上述业务入口地址信息承载在广播流中其 它具有特定标识的数据消息中， 或者通过扩展现有表中的字段， 将上述业务入 口地址信息承载在该字段中， 此处不作限定。
广播服务器 602, 用于广播播发信息，
其中， 该播发信息指示上述指定信道的频点和服务表示符。
在实际应用中， 广播服务器 602可将上述播发信息承载在 ΝΙΤ表中进行 播发， 当然，也可将上述播发信息承载在其它基于 PSI/SI表中，此处不作限定。 广播服务器 602例如可以是单向 EPG服务器或其它具有广播功能的服务器。 可理解， 业务址播入口地址播发器 601可以是广播服务器 602的一个子模块， 也可以是与广播服务器 602并行的模块， 此处不作限定。
需要说明的是，本实施例的业务地址播发系统 600可以如上述方法实施例 中的业务地址播发系统， 可以用于实现上述方法实施例中的全部技术方案， 其 各个功能模块的功能可以根据上述方法实施例中的方法具体实现，其具体实现 过程可参照上述实施例中的相关描述， 此处不再赘述。
由上可见， 本发明实施例中由业务地址播发系统播发业务入口地址信息， 并广播指示播发业务入口地址信息时占用的信道播发信息，使数字电视终端可 获取该播发信息， 并从播发信息指示的信道上获取该业务入口地址信息， 完成 对业务入口地址的自动寻址过程。本发明实施例提供的技术方案实现了数字电 视终端对业务入口地址的自动寻址，一方面， 工程人员可不必再为每个数字电 视终端配置业务入口地址， 极大地减少了安装工作量， 另一方面， 当业务入口 地址改变时， 只需由工程人员对播发的业务入口地址信息进行相应修改即可， 具有高安全性和高可靠性的特点。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤 是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可 读存储介质中， 上述提到的存储介质可以是只读存储器， 随机存储器、 磁盘或 光盘等。
以上对本发明所提供的一种业务入口的寻址方法、相关终端和系统进行了 详细介绍， 对于本领域的一般技术人员， 依据本发明实施例的思想， 在具体实 施方式及应用范围上均会有改变之处， 综上， 本说明书内容不应理解为对本发 明的限制。

Claims

权 利 要 求
1、 一种业务入口的寻址方法， 其特征在于， 包括：
获取业务地址播发系统广播的播发信息，所述播发信息指示所述业务地址 播发系统播发业务入口地址信息时占用的信道；
从所述播发信息指示的信道上获取所述业务入口地址信息；
根据所述业务入口地址信息访问相应的业务入口服务器。
2、 根据权利要求 1所述的方法， 其特征在于，
所述获取业务地址播发系统广播的播发信息包括：
接收业务地址播发系统广播的网络信息表 NIT,所述 NIT表中承载播发信 息；
对所述 NIT表进行解析， 获取所述播发信息。
3、 根据权利要求 1或 2所述的方法， 其特征在于，
所述播发信息包含指示所述信道的频点和服务标识符；
所述从所述播发信息指示的信道上获取所述业务入口地址信息具体为： 根据所述播发信息中的所述频点和服务标识符，获取所述业务入口地址信 息。
4、 根据权利要求 3所述的方法， 其特征在于， 所述根据所述播发信息中 的所述频点和服务标识符， 获取所述业务入口地址信息包括：
根据所述播发信息中的频点调到相应的频点并锁频，获取节目关联表 PAT; 根据所述服务标识符从所述 PAT表中获取所述业务入口地址信息。
5、 根据权利要求 4所述的方法， 其特征在于，
所述业务入口地址信息承载在私有表中；
所述根据所述服务标识符从所述 PAT表中获取所述业务入口地址信息包 括：
根据所述服务标识符从所述 PAT表中获取节目映射表 PMT 的包标识符
PID, 所述 PMT表包含所述私有表的私有表标识信息；
根据所述 PMT表的 PID, 获取所述 PMT表；
根据所述 PMT表中包含的所述私有表标识信息， 获取所述私有表； 对所述私有表进行解析， 获取所述业务入口地址信息。
6、 根据权利要求 4所述的方法， 其特征在于，
所述业务入口服务器为电子节目菜单 EPG调度服务器；
所述业务入口地址信息包括：
所述 EPG调度服务器的地址。
7、 一种业务入口的寻址方法， 其特征在于， 包括：
业务地址播发系统在指定信道播发业务入口地址信息；
业务地址播发系统广播播发信息，所述播发信息指示所述指定信道的频点 和服务标识符。
8、 一种数字电视终端， 其特征在于， 包括：
第一获取单元， 用于获取业务地址播发系统广播的播发信息， 所述播发信 息指示所述业务地址播发系统播发业务入口地址信息时占用的信道；
第二获取单元，用于从所述第一获取单元获取的播发信息指示的信道上获 取所述业务入口地址信息；
访问单元，用于根据所述第二获取单元获取的业务入口地址信息访问相应 的业务入口服务器。
9、 根据权利要求 8所述的数字电视终端， 其特征在于，
所述第一获取单元包括： 接收单元和解析获取单元；
所述接收单元用于接收业务地址播发系统广播的网络信息表 NIT, 所述 NIT表中承载播发信息；
所述解析获取单元用于对所述 NIT表进行解析， 获取所述播发信息。
10、 根据权利要求 8或 9所述的数字电视终端， 其特征在于，
所述播发信息包含指示所述信道的频点和服务标识符；
所述第二获取单元具体用于根据所述播发信息中的所述频点和服务标识 符， 获取所述业务入口地址信息。
11、 根据权利要求 10所述的数字电视终端， 其特征在于，
所述第二单元具体用于根据所述播发信息中的频点调到相应的频点并锁 频， 获取节目关联表 PAT;
根据所述服务标识符从所述 PAT表中获取所述业务入口地址信息。
12、 根据权利要求 11所述的数字电视终端， 其特征在于， 所述业务入口地址信息承载在私有表中；
所述第二获取单元包括： 第一子获取单元， 第二子获取单元， 第三子获取 单元， 第四子获取单元和第五子获取单元；
所述第一子获取单元用于根据所述播发信息中的频点调到相应的频点并 锁频， 获取节目关联表 PAT;
所述第二子获取单元用于根据所述播发信息中的服务标识符从所述 PAT 表中获取节目映射表 PMT的包标识符 PID, 所述 PMT表包含所述私有表的 私有表标识信息；
所述第三子获取单元用于根据所述 PMT表的 PID , 获取所述 PMT表； 所述第四子获取单元用于根据所述 PMT表中包含的所述私有表标识信息 , 获取所述私有表；
所述第五子获取单元用于对所述私有表进行解析，获取所述业务入口地址 信息。
13、 一种业务地址播发系统， 其特征在于， 包括：
业务入口地址播发器， 用于在指定信道播发业务入口地址信息；
广播服务器， 用于广播播发信息， 所述播发信息指示所述指定信道的频点 和服务标识符。
PCT/CN2011/082388 2011-03-14 2011-11-18 一种业务入口的寻址方法、相关终端和系统 WO2012122818A1 (zh)

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