CN101998173B - Distributed media sharing play controller as well as media play control system and method - Google Patents

Distributed media sharing play controller as well as media play control system and method Download PDF

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Publication number
CN101998173B
CN101998173B CN2009101898001A CN200910189800A CN101998173B CN 101998173 B CN101998173 B CN 101998173B CN 2009101898001 A CN2009101898001 A CN 2009101898001A CN 200910189800 A CN200910189800 A CN 200910189800A CN 101998173 B CN101998173 B CN 101998173B
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China
Prior art keywords
media
control device
broadcast control
disributed
shared
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CN2009101898001A
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Chinese (zh)
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CN101998173A (en
Inventor
梁良
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN2009101898001A priority Critical patent/CN101998173B/en
Priority to PCT/CN2010/075621 priority patent/WO2011023056A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests
    • 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
    • H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
    • H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/632—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing using a connection between clients on a wide area network, e.g. setting up a peer-to-peer communication via Internet for retrieving video segments from the hard-disk of other client devices

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The invention discloses a distributed media sharing play controller. The distributed media sharing play controller is in communication connection with a network and a user terminal and comprises a first signal interface, a second signal interface, a data storage module and a main control module, wherein the first signal interface is used for receiving a media signal in the network; the second signal interface is used for receiving a control instruction of the user terminal; the data storage module is used for storing the media data in the media signal; and the main control module is used for sending the media data stored by the data storage module to the user terminal through the second signal interface after the second signal interface receives the control instruction of the user terminal. The invention also provides a media play control system and method, so that the interactive service needs such as demanding of the user and the like are not influenced by a server or the input/output bandwidth and large-scale media information play control of the system is realized.

Description

Disributed media is shared Broadcast Control device, system of playing and controlling media and method
Technical field
The present invention relates to communication technical field, especially relate to a kind of disributed media and share Broadcast Control device, system of playing and controlling media and method.
Background technology
In recent years, along with development of internet technology and people's demand, video request program becomes new technical concerns point gradually.Video request program roughly can reduce two kinds:
A kind of being based on the complete IP network realizes that like Fig. 1, the user to the Internet, carries out the program request of video through network insertions such as broadband network DSL, optical fiber access or wlan on the internet.
A kind of to be based on the interactive medium that broadcasting and TV (digital TV network) combine with communication network (IP network) professional, professional like the IPTV based on digital television system.
The inventor is in realizing process of the present invention; Find that there is following shortcoming at least in prior art: no matter be scheme one or scheme two; In interactive services such as support mass user program request, system is subject to the quantity of server and the gateway bandwidth of IP metropolitan area network.
Summary of the invention
The embodiment of the invention provides a kind of disributed media to share studio equipment, system of playing and controlling media and method, so that system does not receive the restriction of the quantity and the gateway bandwidth of server, thereby realizes large-scale media information Broadcast Control.
According to an aspect of the present invention; Provide a kind of disributed media to share the Broadcast Control device; The shared Broadcast Control device of said disributed media is communicated by letter with said user terminal and hfc plant respectively and is connected; Said hfc plant is communicated by letter with the shared Broadcast Control device of said disributed media and is connected, and said user terminal is communicated by letter with the shared Broadcast Control device of said disributed media and is connected, and said disributed media is shared the Broadcast Control device and comprised first signaling interface, secondary signal interface, data memory module and main control module;
Wherein, said first signaling interface is used for receiving said hfc plant HFC signal;
Said secondary signal interface is used to receive the control command of said user terminal;
Said data memory module is used for storing the media data of said HFC signal;
Said main control module is used for after the said secondary signal interface of reception receives the control command of said user terminal, and the said media data that said data memory module is stored sends to sending said user terminal through said secondary signal interface.
According to a further aspect in the invention; A kind of system of playing and controlling media also is provided, comprises that a plurality of disributed medias share Broadcast Control device, user terminal and hfc plant; The shared Broadcast Control device of said a plurality of disributed media is communicated by letter with said user terminal and hfc plant respectively and is connected; Said hfc plant is communicated by letter with the shared Broadcast Control device of said a plurality of disributed medias and is connected, and said user terminal is communicated by letter with the shared Broadcast Control device of said a plurality of disributed medias and is connected
Wherein, said hfc plant is used to provide the HFC signal;
Said a plurality of disributed media is shared the HFC signal that the Broadcast Control device is used to receive said hfc plant; And store the media data in the said media signal; And when receiving the control command of said user terminal, the media data of said storage is sent to said user terminal.
According to a further aspect in the invention; A kind of medium broadcast control method also is provided; Said medium broadcast control method is applied to comprise in a plurality of disributed medias shared Broadcast Control device, user terminal and the network architecture; Said network comprises hfc plant, and the shared Broadcast Control device of said disributed media is communicated by letter with said user terminal and hfc plant respectively and is connected, and said hfc plant is communicated by letter with the shared Broadcast Control device of said disributed media and is connected; Said user terminal is communicated by letter with the shared Broadcast Control device of said disributed media and is connected, and said method comprises:
Said disributed media is shared the Broadcast Control device and is received the HFC signal in the said hfc plant;
Said disributed media is shared the Broadcast Control device and is stored the media data in the said HFC signal;
When the shared Broadcast Control of said disributed media receives the control command of said user terminal transmission, the media data of said storage is exported to said user terminal.
The embodiment of the invention is shared the Broadcast Control device owing between hfc plant and user terminal, increase disributed media; Media data in the HFC signal of interactive service devices such as server program request in the hfc plant system is stored, and when receiving user's control command, the media data with needs is sent to the user again; Thereby when the interactive service demands such as program request of mass user occurring; Can avoid the server in the hfc plant to be visited, that is to say that interactive service demands such as user's program request can not receive the influence of server in the hfc plant by mass user; Do not receive the influence of gateway bandwidth, thus the large-scale media information Broadcast Control of the system of realization.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; To do to introduce simply to the accompanying drawing of required use in prior art or the embodiment description below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is based on the applied environment figure of the media services network of plurality of access modes;
Fig. 2 is based on the applied environment figure of the cable TV network of optical fiber and coaxial cable;
Fig. 3 is based on the applied environment figure of optical fiber PON (the Passive Optical Network) system of Edge Server;
Fig. 4 is based on the applied environment figure of the cable television system of Edge Server;
Fig. 5 is first kind of applied environment figure that the disributed media of the embodiment of the invention is shared the Broadcast Control device;
Fig. 6 is second kind of applied environment figure that the disributed media of the embodiment of the invention is shared the Broadcast Control device;
Fig. 7 is that the disributed media of the embodiment of the invention is shared the sketch map that the Broadcast Control device is formed the network of cooperation
Fig. 8 be the embodiment of the invention a double-layer structure share the sketch map of the network of the cooperation that the Broadcast Control device forms by disributed media;
Fig. 9 is the copy amount control table that the distributed DHT based on sandwich construction of the embodiment of the invention searches;
The sketch map in the territory that Figure 10 specifically deposits for the distributed DHT index based on sandwich construction of the embodiment of the invention;
Figure 11 is the flow chart of the lookup method of the embodiment of the invention;
Figure 12 is the practical application figure of the lookup method of the embodiment of the invention;
Figure 13 is the adding of the memory node of the embodiment of the invention and the sketch map of leaving away;
Figure 14 is the flow chart of the media playing method of the embodiment of the invention;
Figure 15 is the sketch map that is applied to digital television system of the media playing method of the embodiment of the invention;
Figure 16 is the practical application figure of the media playing method of the embodiment of the invention;
Figure 17 is the structure chart that the disributed media of the embodiment of the invention is shared the Broadcast Control device;
Figure 18 is another structure chart that the disributed media of the embodiment of the invention is shared the Broadcast Control device;
Figure 19 is the distributed storage of the embodiment of the invention and Distributed Calculation agency's network layer Organization Chart.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
How to solve the great demand of user to server and memory, the present invention proposes, at the end of network; (Hybrid Fiber-Coaxial is HFC) in the network, or digital subscriber line (Digital Subscriber Line like hybrid fiber/ coax, HFC; DSL) in the access network; Or passive fiber (PassiveOptical Network, PON) in the access network, the shared Broadcast Control device of increase disributed media.This disributed media is shared the Broadcast Control device and is deployed in the sub-district, or in the corridor, for a plurality of users provide medium Broadcast Control service, and metadata cache (comprising uplink and downlink), service agent can also be provided.Share the Broadcast Control device owing between hfc plant or PON network and user terminal, increase a plurality of disributed medias; The HFC signal of interactive service devices such as server program request in hfc plant or the PON network system or the media data in the PON signal are stored; When receiving user's control command; Media data with needs is sent to the user again, thereby when the interactive service demands such as program request of mass user occurring, can avoid the server in hfc plant or the PON network to be visited by mass user; That is to say; Interactive service demands such as user's program request can not receive the influence of server in hfc plant or the PON network and not receive the influence of gateway bandwidth, thus the large-scale media information Broadcast Control of the system of realization.
Adopt the present invention; A plurality of users (or family) can a public agent equipment (disributed media is shared the Broadcast Control device); The user shares the Broadcast Control device without the maintenance and management disributed media simultaneously; The shared Broadcast Control device portion of disributed media can be with the data information memory of network, to support the user's time-shift demand simultaneously.
Disributed media is shared the support of Broadcast Control device and is converted network signal into signal form or coding that subscriber household equipment needs, has reduced the needed upgrading cost of subscriber household equipment access network.
Disributed media is shared the Broadcast Control device, and is unified by the network provider management, therefore; Perfect copyright management be can accomplish, Broadcast Control device, the media information of distribution shared through disributed media; Artistic work can be accomplished perfect knowledge producing region protection, and disributed media is shared the Broadcast Control device; Be the channel that mass user provides digital media information to consume, this makes the consumption price of digital product obtain user's acceptance more easily.
Like Fig. 2, at present, digital TV network; To family, what generally adopt is coaxial cable, hybrid fiber/ coax, HFC (Hybrid Fiber-Coaxial to the sub-district; HFC) network in population inhabitation compact district, has users up to ten thousand; Share a hfc plant, if when a lot of user carries out demand (telecommunication) service simultaneously, the server of hfc plant can not support.HFC is made up of fiber optic backbone, coaxial cable branch line and subscriber distribution network network three parts usually, and the programme signal of coming out from cable TV station becomes light signal earlier and transmits at main line; Behind the user area, convert light signal to the signal of telecommunication, after distributor distributes, deliver to the user through coaxial cable.
Fig. 3 is based on the system that optical fiber inserts, and IP is carried on the photosystem, and directly access network carries out communication with data service center, and this system carries out demand (telecommunication) service, is subject to the number of servers of data service center and the outlet bandwidth of data service center equally.
Fig. 3, based on the connecting system of optical fiber PON,, more suitable for the samll cities and towns of living and comparatively disperseing; But for the intensive sub-district of living, or live in the resident family of high-rise apartment building formula building, every family introduces optical fiber and inserts, and is unrealistic at present; And, in time having arrived subscriber household, the equipment that directly inserts through optical fiber at present still is fewer, and need light be inserted conversion of signals is the signal of telecommunication; Like ether interface, adsl interface, coaxial cable interface.
Fig. 4 is based on the network architecture of Edge Server, in order to support the mass user demand (telecommunication) service; With data server, be deployed to the edge of IP network, through edge orthogonal amplitude (Quadrature AmplitudeModulation; QAM) equipment is the coaxial cable signal with the IP data transaction, offers the domestic consumer; Though this clock scheme increases the quantity of server, adopts distributed deployment to improve overall bandwidth simultaneously.
But this method in the deployment of server, need be looked for machine room and settle data server, but its bandwidth still is limited and outlet bandwidth server.
In order to support large-scale magnanimity demand (telecommunication) service, the present invention proposes, and the transmission line in the network seals in disributed media and shares the Broadcast Control device on the edge of, or in the terminal equipment of Access Network, increases disributed media and share the Broadcast Control device.
Like Fig. 5, in cable TV network, in coaxial cable; Seal in disributed media and share Broadcast Control device (sharing the Broadcast Control device), this disributed media is shared the Broadcast Control device, obtains the media business data from HFC radio network or PON network (first signal input interface); And store inner data storage into; Data storage can be storage mediums such as internal memory, flash memory, hard disk.
Disributed media is shared the Broadcast Control device, and information index is provided, and is mutual with the STB or the PC of subscriber household; After the shared Broadcast Control device of disributed media receives user's instruction; With the media business data of storage, be encapsulated in the signal form of transmission over coaxial cable, be transferred to the user like IP_QAM; Just the interface between user and the shared Broadcast Control device is the secondary signal output interface.
The STB of subscriber household, and disributed media shares mutual between the Broadcast Control device, can be various ways carry out alternately (secondary signal is imported, output interface) like the IP_QAM agreement, or other is based on the transmission communication agreement of coaxial cable.
Share the Broadcast Control device because of disributed media and dispose,, therefore, can not change on present user's the basis of STB like apartment user's corridor near subscriber household; Adopt telephone wire, or wireless WLAN, WI_FI; Bluetooth protocol, or the door bell and button system of corridor are set up the user shares the Broadcast Control device to disributed media control channel; Just the user arrives the input of the 3rd signal, the output interface of sharing the Broadcast Control device, or based on the IP_QAM agreement, sets up the user shares the Broadcast Control device to disributed media control channel.
In a hfc plant, or on coaxial cable, can be according to number of users; Dispose a plurality of disributed medias and share the Broadcast Control device, disributed media is shared between the Broadcast Control device, takies one or more channels or frequency and carries out alternately; And disributed media is shared the agreement (input of first signal, output interface) that adopts P2P between the Broadcast Control device, or other protocol modes carry out the interchange of information, carries out sharing of media information; Alternately, or media information search addressing.
In the present embodiment; First signal input output interface; Refer to that disributed media is shared between the Broadcast Control device or disributed media is shared the Broadcast Control device to the interface between the server; Disributed media is shared the Broadcast Control device and is obtained media data through this interface from server, also can share the Broadcast Control device from other disributed media and obtain media data;
The secondary signal input/output interface refers to that disributed media shares the Broadcast Control device to the HFC interface between the user, the user through this interface acquisition can program request digital television signal;
The 3rd signal input output interface; Refer to that disributed media shares between the Broadcast Control device, or disributed media shares the Broadcast Control device to the non-HFC interface between the user, such as; Ether interface; The user through this interface obtain can program request digital television signal or other digital signals alternately, disributed media is shared the Broadcast Control device through this interface, through the Internet interaction data; Said disributed media is shared between the Broadcast Control device can pass through the HFC signal, or the ether signal, or the DSL signal, or passes through the media data of the said storage of internet network interaction.
Like Fig. 6, disributed media is shared the Broadcast Control device, and internet is provided network access facility, and the user is transferred in the network after can the data of oneself being shared Broadcast Control device buffer memory through disributed media.
Like Fig. 6, disributed media is shared the Broadcast Control device, for the user provides the service of P2P or media buffer, and through internet NetFind media data, or buffered media data.
Like Fig. 6, disributed media is shared between the Broadcast Control device, through the internet network; Form huge media management shared network; A plurality of disributed medias are shared the Broadcast Control device, through front-end business platform (also can be referred to as center management server), form medium Broadcast Control network; The front-end business platform is shared the Broadcast Control device according to the temperature of medium to the disributed media of medium and is adjusted deployment.
Like Fig. 7, disributed media is shared the Broadcast Control device, according to the deployment of network; In networking; Can regard a kind of tree network structure as, or a kind of network configuration of grape (on the wall scroll network line that possesses, there are a plurality of disributed medias to share the Broadcast Control device; The grapy structure of class, a kind of distortion of tree structure).
According to fashion trend, user's program request behavior meets sixteen principles basically, and the user a time period 80% can see 20% program; Therefore, hot programs must have a plurality of copies, so that the user watches; 80% cold program need carry out Search and Orientation, in yet another aspect on the other hand; Local cold program in the overall situation, also might be the thermal center order.
Search and manage copy for ease, the embodiment of the invention proposes the media management mechanism based on multilayer DHT index.
Like Fig. 8, disributed media is shared the Broadcast Control device, according to configuration, or network transfer delay or bandwidth; Form different territories (area), there are one or more host nodes (MASTER) and some node nodes in each territory, forms one territory; The media data of the overall situation is set up index, at the MASTER index on the MASTER node; Only navigate to the territory, in the territory, do not carry out index.In the present embodiment, share the Broadcast Control device for disributed media and can be used as MASTER node or some node nodes.
In the area territory, each node is set up (Distributed Hash Table) the dht index in this territory.
Like Fig. 9, on the MASTER node, set up index, the number of the backup of hot programs possibly have very many; In the area territory; Each node is set up (Distributed Hash Table) the DHT index in this territory, at this index place; Note the number of copy at the corresponding levels, this copy is arranged if any what AREA.
Like Figure 10, the person of searching produces the numeral less than the copy number, and searches data name associating, produces a KEY, finds a territory of depositing this copy according to this KEY.
The index of copy, through HASH, hash is distributed to many disributed medias and shares the Broadcast Control device;
Because coding rule is certain; If therefore just inquire about the operation of copy address, rather than increase the operation of deletion copy, inquiry; Can inquire about the number of copy, but tentative directly to the shared Broadcast Control device proposition of the disributed media of copy address query requests.
When content very popular; The quantity of copy is a lot, and the index occupation space that keeps copy is bigger, can arrange; When copy amount surpasses 100 or other set points the time; Only provide set point like 100 index, index is carried out load sharing, dynamically index is based upon the light disributed media of load and shares on the Broadcast Control device.
Like Figure 11, provide the step of a concrete lookup method:
Step 111 finds the computer or the network equipment (AreaNumDHT) that stores distributed AREA copy DHT table according to the context number HASH of data, obtains the number of copy; (table in the query graph 9)
Step 112; According to the number of copy, can obtain copy Index numbering by HASH (data name+copy numbering), find the territory (AreaIndexDHT) that is specifically stored copy; This step can be carried out load sharing dynamically according to the load of concrete AREA; (table among inquiry Figure 10)
Step 113 has obtained the MASTER node (AreaMaster) of concrete AREA, and the MASTER node (AreaMaster) among the AREA for the outer node of AREA, provides the agency.
Step 114, MASTER node (AreaMaster) finds the position (AreaNode) of copy, offers outside node, when external node is provided, load sharing control is provided, and for the node of high load capacity, carries out balance.
Step 115, the node in this territory (AreaNode) is searched copy, directly searches the node in this territory, can search to step 111 then at first in this domain lookup.
Figure 12 is the practical application figure of Figure 11.In Figure 12, the step S111 of empty frame 1 corresponding Figure 11, by that analogy.
There are how many territories to preserve the copy of data; Need add up and appraise and decide; Each MASTER node; Count the copy that preserve in this territory, this information is reported " Area copy number DHT (inquiry of copy number is provided) " of being responsible for this section HASH spatial data statistics respectively, gather by this node and calculate.Concrete algorithm can be used for reference the MAPREDUCE algorithm.
In the territory, the Master node provides, and to the inquiry proxy of external domain, the node in this territory is in this domain lookup information, and is the same as on area, searching.
In the territory, set up copy number and the DHT index of life cycle in the territory, search node, at first search the number of copy in the territory, find desired node then.
The generation of copy, the person of searching is when searching the DHT index of copy number and life cycle; The relation of inspection copy amount and copy user number; Be higher than copy amount if find the use number of copy, according to the memory space and the gateway bandwidth conditions of this node, whether decision preserves this copy simultaneously; If this copy is preserved in decision; After successfully obtaining copy,, ask more latest copy number and the DHT concordance list of life cycle to the node of preserving this copy number and the DHT index concordance list of life cycle.This node, according to the adding and the release situation of copy, adjustment, or upgrade the node index of preserving these nodes.
Withdrawing from of copy, copy adds fashionable, has obtained the life cycle of copy, after arriving life cycle, to the node of preserving copy number and the DHT concordance list of life cycle, this copy on this this node of request deletion.
Preserve the node of copy number and the DHT concordance list of life cycle, after the agreement, the DHT concordance list of adjustment copy amount and copy guarantees that the DHT concordance list of copy is kept correct sensing.
Distributed systems, the correct sensing that needs to preserve index, and the disributed media of preservation copy is shared the Broadcast Control device; The more needs of latest copy are arranged, and simultaneously disributed media is shared that the Broadcast Control device might go offline and is waited unusual generation, therefore; Index search failure, be inevitable.But need the correctness of keeping index as far as possible.
Like Figure 13, provided memory node 1 and left away, memory node 5 adds the process of the sensing memory node 5 of index node 1.
The flow chart of the media playing method that Figure 14 provides for the embodiment of the invention.In the present embodiment, said medium broadcast control method is applied to comprise that a plurality of disributed medias share Broadcast Control device, user terminal, hfc plant and the PON network architecture.
Step S140, said disributed media share the Broadcast Control device and receive the HFC signal in the said hfc plant or receive the PON signal in the said PON network;
Step S142, said disributed media share the Broadcast Control device and store the media data information in said HFC signal or the PON signal;
When step S144, said disributed media share Broadcast Control and receive the control command that said user terminal sends, the media data of said storage is packaged into HFC signal or ether signal, exports said user terminal to.
In the present embodiment; First disributed media that said a plurality of disributed media is shared in the Broadcast Control device is shared the Broadcast Control device through the HFC signal, or the ether signal, or the DSL signal; Or through the internet network, with the media data of the shared mutual said storage of Broadcast Control device of second disributed media; And the shared Broadcast Control device of first disributed media in the shared Broadcast Control device of said a plurality of disributed media is sent to said user terminal according to the control command of said user terminal with media data described in the shared Broadcast Control device of said second disributed media.
Figure 15 is applied to the sketch map of digital television system for the present invention, and digital television system possesses broadcast characteristic.
Step 151, through digital television channel, hfc plant, satellite channel; With hot programs, PUSH shares in the Broadcast Control device to disributed media in advance, shares the Broadcast Control device and passes through down-conversion; Digital signal is extracted, and stores programme information into disributed media and shares in the internal storage of Broadcast Control device, along with the development of disk technology; The cost and price of jumbo disk is also more and more lower, and dispose disributed media on a large scale and share the Broadcast Control device, be not too high for the cost requirement of operator.
In the step 151, through digital television channel, can also transmit the EPG generator code of program, this program code is shared the Broadcast Control device at disributed media and is carried out the corresponding program of indication user's program request.
In step 151, through digital television channel, can also transmit the program code execution that disributed media is shared the Broadcast Control device, share the program of Broadcast Control device to disributed media and upgrade.
Obviously, the DVB-C business platform needs the control disributed media to share the program code upgrading of Broadcast Control device, need carry out strict information encryption to this passage, resists illegal invasion.
Step 152, disributed media is shared the Broadcast Control device, on frequency and channel that the user can receive, generates the EPG information that subscriber equipment can receive, or other interactive information, like the WEB page.
Step 153, the user checks through the EPG or the web page or searches the programme information that need watch, after finding, assigns and watch instruction.
Step 154, disributed media are shared the program of Broadcast Control device with storage inside, or as the program of agency at the shared Broadcast Control device of other disributed media, read out, and generate the signal form that the user can receive, and are sent to the user.
Step 155, disributed media is shared the Broadcast Control device, through hfc plant, or the INTERNET network, user's program request record is instant, or after the bulk statistics, be pooled to charge system, the user is carried out accounting management.
Step 156, Subscriber Management System, through user's management, management is paid the fees, authority, and with charge system interlock, the user is managed.
Figure 16 is the practical application figure of Figure 15.In Figure 16, the step S151 among 1 corresponding Figure 15 in the empty frame, by that analogy.
Figure 17, the present invention can be applied in the cable television system, and disributed media is shared Broadcast Control device 162 and is connected with network 161 and user terminal 163 communications respectively; Disributed media is shared Broadcast Control device 162 and is comprised first signaling interface 1620, down conversion module 1621, quadrature amplitude demodulation module 1622; Data memory module 1623; Main control module 1624, quadrature amplitude modulation module 1625, up-conversion module 1626, secondary signal interface 1627 and the 3rd signaling interface 1628.In the present embodiment, disributed media is shared Broadcast Control device 162, also to the HFC signal, the function of transparent transmission is provided.In the present embodiment, network 161 is a hfc plant.
In the present embodiment; Be carried on the digital media information on the hfc plant 161; Be the HFC signal, behind first signaling interface 1620, pass through down conversion module 1621 and quadrature amplitude demodulation module 1622 again after; Media data in the digital media information is extracted out, is stored in the data memory module 1623;
Down conversion module 1621 is used for the HFC signal of the media signal of the network of said first signaling interface reception is carried out frequency translation; Quadrature amplitude demodulation module 1622 is used for the signal after the said down conversion module conversion is carried out quadrature amplitude demodulation, to obtain media data.
Secondary signal interface 1627 is used to receive the control command that user terminal 163 sends, and is forwarded to main control module 1624, obtains the media data of storage from data memory module 1623 by main control module 1624 notice quadrature amplitude modulation modules 1625.In the present embodiment; After media data process quadrature amplitude modulation module 1625 and the up-conversion module 1626; Up-conversion module 1626 is packaged into another HFC signal through secondary signal interface 1627 with said media data with the media data after the frequency conversion, or, through the 3rd signaling interface 1628 said media data is packaged into ethernet signal; Send on the channel of user's reception, supply the user to receive.In the present embodiment, control command is appreciated that the program request instruction into the user.In the present embodiment, secondary signal interface 1627 is the HFC interface, and the 3rd signaling interface 1628 is an Ethernet interface.
In the present embodiment, down conversion module 1621, quadrature amplitude demodulation module 1622, quadrature amplitude modulation module 1625, the function of up-conversion module 1626 is familiar with by those skilled in the art, no longer describes here.
The HFC signal can be crossed the shared Broadcast Control device of disributed media by transparent transmission, particularly when the shared Broadcast Control device of disributed media breaks down, does not influence the user and watches other broadcast programs.
In the present embodiment; Cable television system can also comprise that a plurality of disributed medias share the Broadcast Control device; First signaling interface 1620 in the shared Broadcast Control device 162 of disributed media can be communicated by letter with the shared Broadcast Control device of other disributed media and is connected; The disributed media that this first signaling interface 1620 receives other shares that the Broadcast Control device sends when calling disributed media and sharing the instruction of media data of the storage in the Broadcast Control device 162; This disributed media is shared the media data that the main control module 1624 in the Broadcast Control device 162 will store and is packaged into the HFC signal, is sent to this other the shared Broadcast Control device of disributed media via said first signaling interface 1620.Or, directly by said first signaling interface 1620 directly under the call instructions with main control module 1624, the media data of storage is packaged into the HFC signal, and is sent to this other disributed media and shares the Broadcast Control device.
Certainly; The 3rd signaling interface 1628 in the shared Broadcast Control device 162 of disributed media can be communicated by letter with the shared Broadcast Control device of other disributed media and is connected; The disributed media that the 3rd signaling interface 1628 receives other shares that the Broadcast Control device sends when calling disributed media and sharing the instruction of media data of the storage in the Broadcast Control device 162; This disributed media is shared the media data that the main control module 1624 in the Broadcast Control device 162 will store and is packaged into the ether signal, is sent to this other the shared Broadcast Control device of disributed media via said the 3rd signaling interface 1628.Or, directly by said the 3rd signaling interface 1628 directly under the call instructions with main control module 1624, the media data of storage is packaged into the ether signal, and is sent to this other disributed media and shares the Broadcast Control device.
Figure 18, the present invention can also be applied to passive fiber, and (Passive Optical Network is PON) in the network access system; Disributed media is shared Broadcast Control device 172 and is connected with network 171 and user terminal 173 communications, and disributed media is shared Broadcast Control device 172 and comprised first signaling interface 1720, network protocol module 1722; Data memory module 1723, main control module 1724, quadrature amplitude modulation module 1725; Up-conversion module 1726, secondary signal interface 1727 and the 3rd signaling interface 1728.Disributed media is shared Broadcast Control device 172, in the pon network, utilizes broadcast channel to receive data, and storage, can also share the Broadcast Control device with other disributed medias in the network and form network, for the user provides the media business service.Should middlely use,, comprise being not limited to the Ethernet interface, DSL network interface, wlan network or the like simultaneously for user terminal provides network interface.When the shared Broadcast Control device of disributed media possessed wlan network, it can form wireless MESH network each other, utilizes Radio Link to carry out communication, interactive information each other.
In the present embodiment, first signaling interface 1720 receives and is carried on the digital media information on the PON network, promptly; The PON signal; Network protocol module 1722 detunes the digital media information that receives, and obtaining media data, and is stored in the data memory module 1723; In the present embodiment, first signaling interface 1720 can comprise the PON module, is appreciated that to identifying the PON signal.
After secondary signal interface 1727 receives user's control command, this instruction is forwarded to main control module 1724, obtains the media data of storage from data memory module 1723 by main control module 1724 notice quadrature amplitude modulation modules 1725.In the present embodiment; After media data process quadrature amplitude modulation module 1725 and the up-conversion module 1726; Up-conversion module 1726 is packaged into HFC signal through secondary signal interface 1727 with said media data with the media data after the frequency conversion, or, through the 3rd signaling interface 1628 said media data is packaged into ethernet signal; Send on the channel of user's reception, supply user terminal 173 to receive.In the present embodiment, secondary signal interface 1627 is the HFC interface.
In the present embodiment; Passive fiber (Passive Optical Network; PON) network access system can also comprise that a plurality of disributed medias share the Broadcast Control device; First signaling interface 1720 in the shared Broadcast Control device 172 of disributed media can be communicated by letter with the shared Broadcast Control device of other disributed media and is connected; The disributed media that this first signaling interface 1720 receives other shares that the Broadcast Control device sends when calling disributed media and sharing the instruction of media data of the storage in the Broadcast Control device 172; This disributed media is shared the media data that the main control module 1724 in the Broadcast Control device 172 will store and is packaged into fiber-optic signal, i.e. PON signal is sent to this other the shared Broadcast Control device of disributed media via said first signaling interface 1720.Or, directly by said first signaling interface 1720 directly under the call instructions with main control module 1724, the media data of storage is packaged into the PON signal, and is sent to this other disributed media and shares the Broadcast Control device.
Certainly; The 3rd signaling interface 1728 in the shared Broadcast Control device 172 of disributed media can be communicated by letter with the shared Broadcast Control device of other disributed media and is connected; The disributed media that the 3rd signaling interface 1728 receives other shares that the Broadcast Control device sends when calling disributed media and sharing the instruction of media data of the storage in the Broadcast Control device 172; This disributed media is shared the media data that the main control module 1724 in the Broadcast Control device 172 will store and is packaged into the ether signal, is sent to this other the shared Broadcast Control device of disributed media via said the 3rd signaling interface 1728.Or, directly by said the 3rd signaling interface 1728 directly under the call instructions with main control module 1724, the media data of storage is packaged into the ether signal, and is sent to this other disributed media and shares the Broadcast Control device.
A plurality of disributed medias are shared the Broadcast Control device, can pass through wlan network or local area network (LAN) or wireless MESH network, form the network of P2P, each other interaction data.
Figure 19, along with the widespread deployment of the shared Broadcast Control device of disributed media, what user's information can be a large amount of stores in the network, and user's data is at first carried out buffer memory in network, and data finally store in the data center.
Disributed media is shared the Broadcast Control device; Supporting simultaneously provides computing capability to the user; User's data and program are moved in disributed media is shared the Broadcast Control device, just with the computing of user on home computer or mobile phone or TV or game machine, load or share the Broadcast Control device by disributed media and act on behalf of computing; This mode; Be actually disributed media is shared the node of Broadcast Control device as cloud computing, the while, many computers of system call calculated for the user according to the situation of user's service log-on.
Share the Broadcast Control device because of disributed media and be widely deployed in user's the sub-district or corridor, its power supply management is not by user's control simultaneously, therefore shares the network that the Broadcast Control device is formed by disributed media; It has stable, and maintenance update is undertaken by the network personnel of specialty, and is convenient for users to use; Possessed certain convergence ratio simultaneously, divided on each user, input is little; Easily according to user's growth, progressively invest flexibly simultaneously, operation and management also is convenient in operator.
The present invention can regard as, by operator; In position near the user, disposed a huge P2P network, the node disributed media in this network is shared Broadcast Control device (peer); Be to provide and dispose, carry out management maintenance by operator, this architecture simultaneously by operator; Avoided forming the variety of problems of P2P network, can not get effectively safeguarding or the like like copyright by user's computer.
Disributed media among the present invention is shared the Broadcast Control device, has possessed user interface form flexibly simultaneously, can support user's television set, computer, and mobile phone or the like, convenient for users to use.
The technical scheme that the embodiment of the invention provides; Share the Broadcast Control device owing between hfc plant or PON network and user terminal, increase a plurality of disributed medias; The HFC signal of interactive service devices such as server program request in hfc plant or the PON network system or the media data in the PON signal are stored, and when receiving user's control command, the media data with needs is sent to the user again; Thereby when the interactive service demands such as program request of mass user occurring; Can avoid the server in hfc plant or the PON network to be visited, that is to say that interactive service demands such as user's program request can not receive the influence of server in hfc plant or the PON network by mass user; Do not receive the influence of gateway bandwidth, thus the large-scale media information Broadcast Control of the system of realization.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-OnlyMemory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
What should explain at last is: above embodiment is only in order to technical scheme of the present invention to be described but not limit it; Although the present invention has been carried out detailed explanation with reference to preferred embodiment; Those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, also can not make amended technical scheme break away from the spirit and the scope of technical scheme of the present invention and these are revised or be equal to replacement.

Claims (16)

1. a disributed media is shared the Broadcast Control device; It is characterized in that; The shared Broadcast Control device of said disributed media is communicated by letter with user terminal and hfc plant respectively and is connected; Said hfc plant is communicated by letter with the shared Broadcast Control device of said disributed media and is connected, and said user terminal is communicated by letter with the shared Broadcast Control device of said disributed media and is connected, and said disributed media is shared the Broadcast Control device and comprised first signaling interface, secondary signal interface, the 3rd signaling interface, data memory module and main control module;
Wherein, said first signaling interface is used for receiving said hfc plant HFC signal;
Said secondary signal interface is used to receive the control command of said user terminal;
Said data memory module is used for storing the media data of said HFC signal;
Said the 3rd signaling interface is used for when the disributed media that receives other is shared the instruction of the media data that calls storage of Broadcast Control device, and the media data of said storage is packaged into the ether signal, and is sent to said other disributed media and shares the Broadcast Control device;
Said main control module is used for after the said secondary signal interface of reception receives the control command of said user terminal, and the said media data that said data memory module is stored sends to said user terminal through said secondary signal interface.
2. disributed media according to claim 1 is shared the Broadcast Control device, it is characterized in that, also comprises:
Down conversion module, the digital media information of the HFC signal of the hfc plant that is used for said first signaling interface is received carries out frequency translation;
The quadrature amplitude demodulation module is used for the signal after the said down conversion module conversion is carried out quadrature amplitude demodulation, to obtain media data;
Said data memory module is used to store the media data that said quadrature amplitude demodulation module obtains.
3. disributed media according to claim 1 is shared the Broadcast Control device, it is characterized in that, said disributed media is shared the Broadcast Control device and also is connected with PON network service, and said disributed media is shared the Broadcast Control device and also comprised:
Said first signaling interface also is used for receiving the PON signal of said PON network;
Network protocol module is used for the PON signal of said reception is detuned, to obtain media data;
Said data memory module is used to store the media data that said network protocol module obtains.
4. disributed media according to claim 1 is shared the Broadcast Control device, it is characterized in that, also comprises:
The quadrature amplitude modulation module is used for after said main control module receives said secondary signal interface and receives the control command of said user terminal, obtaining said media data from said data memory module, and modulating;
The up-conversion module is used for the media data after the said quadrature amplitude modulation module modulation is carried out frequency translation, to be transformed into the media data that said user terminal can receive;
Said secondary signal interface is used for the media data after the said frequency conversion, is sent to said user terminal after being packaged into another HFC signal.
5. disributed media according to claim 4 is shared the Broadcast Control device, it is characterized in that, also comprises:
Said the 3rd signaling interface also is used for the media data after the said frequency conversion is packaged into the ether signal, and is sent to said user terminal.
6. disributed media according to claim 1 is shared the Broadcast Control device; It is characterized in that; The shared Broadcast Control device of said disributed media is also communicated by letter with the shared Broadcast Control device of other disributed media and is connected; Said first signaling interface also is used for when receiving said other disributed media and share the instruction of the media data that calls storage of Broadcast Control device, with media data another HFC signal of encapsulation or another PON signal of said storage, and is sent to said other disributed media and shares the Broadcast Control device.
7. system of playing and controlling media; It is characterized in that, comprise that a plurality of disributed medias share Broadcast Control device, user terminal and hfc plant; The shared Broadcast Control device of said a plurality of disributed media is communicated by letter with said user terminal and hfc plant respectively and is connected; Said hfc plant is communicated by letter with the shared Broadcast Control device of said a plurality of disributed medias and is connected, and said user terminal is communicated by letter with the shared Broadcast Control device of said a plurality of disributed medias and is connected
Wherein, said hfc plant is used to provide the HFC signal;
Said a plurality of disributed media is shared the HFC signal that the Broadcast Control device is used to receive said hfc plant; And store the media data in the said media signal; And when receiving the control command of said user terminal, the media data of said storage is sent to said user terminal.
8. system according to claim 7 is characterized in that said system of playing and controlling media also comprises the PON network; Said PON network is communicated by letter with the shared Broadcast Control device of said a plurality of disributed medias and is connected; Be used to provide the PON signal, said a plurality of disributed medias are shared the Broadcast Control device and are used to receive the PON signal of said PON network, and store the media data in the said media signal; And when receiving the control command of said user terminal, the media data of said storage is sent to said user terminal.
9. system according to claim 7 is characterized in that, said a plurality of disributed medias are shared the Broadcast Control device and comprised that first disributed media is shared the Broadcast Control device and second disributed media is shared the Broadcast Control device;
Wherein, said first disributed media is shared the Broadcast Control device and is used for the signal through HFC, or the ether signal; Or the PON signal, share the media data of the mutual said storage of Broadcast Control device with second disributed media, be used for when receive said second disributed media share the transmission of Broadcast Control device call the instruction of media data the time; The media data of said storage is packaged into the HFC signal; Or the ether signal, or the PON signal, and be sent to the shared Broadcast Control device of said second disributed media.
10. system according to claim 9; It is characterized in that; Said first disributed media is shared the Broadcast Control device and also is used for the control command according to said user terminal; And obtain said second disributed media and share the said media data of storing in the Broadcast Control device, and the said media data that obtains is sent to said user terminal.
11. system according to claim 7 is characterized in that, also comprises:
The front-end business platform is shared the Broadcast Control device with said a plurality of disributed medias and is communicated by letter and is connected, is used for according to the temperature of medium the shared Broadcast Control device of said a plurality of disributed medias being adjusted and being disposed.
12. system according to claim 7 is characterized in that, said a plurality of disributed medias are shared the Broadcast Control device and also are used for according to configuration, or network transfer delay or bandwidth, form different territories, and wherein, there are one or more host nodes and some nodes in said territory.
13. medium broadcast control method; It is characterized in that said medium broadcast control method is applied to comprise that said network comprises hfc plant in a plurality of disributed medias shared Broadcast Control device, user terminal and the network architecture; The shared Broadcast Control device of said disributed media is communicated by letter with said user terminal and hfc plant respectively and is connected; Said hfc plant is communicated by letter with the shared Broadcast Control device of said disributed media and is connected, and said user terminal is communicated by letter with the shared Broadcast Control device of said disributed media and is connected, and said method comprises:
Said disributed media is shared the Broadcast Control device and is received the HFC signal in the said hfc plant;
Said disributed media is shared the Broadcast Control device and is stored the media data in the said HFC signal;
First disributed media that said a plurality of disributed media is shared in the Broadcast Control device is shared the Broadcast Control device through the HFC signal, or the ether signal, or the DSL signal, or through the internet network, with the media data of the shared mutual said storage of Broadcast Control device of second disributed media;
When the shared Broadcast Control of said disributed media receives the control command of said user terminal transmission, the media data of said storage is exported to said user terminal.
14. method according to claim 13 is characterized in that, when said network also comprised the PON network, said PON network was communicated by letter with the shared Broadcast Control device of said a plurality of disributed medias and is connected, and said method also comprises:
Said disributed media is shared the Broadcast Control device and is received the PON signal in the said PON network;
Said disributed media is shared the Broadcast Control device and is stored the media data in the said PON signal;
When the shared Broadcast Control of said disributed media receives the control command of said user terminal transmission, the media data of said storage is exported to said user terminal.
15. method according to claim 13 is characterized in that, comprising:
When said a plurality of disributed medias share that said first disributed media in the Broadcast Control device shares that the Broadcast Control device receives that said second disributed media shares that the Broadcast Control device sends call the instruction of media data the time; The media data of said storage is packaged into the PON signal, and is sent to the shared Broadcast Control device of said second disributed media.
16. method according to claim 13 is characterized in that, comprising:
Said first disributed media that said a plurality of disributed media is shared in the Broadcast Control device is shared the control command of Broadcast Control device according to said user terminal; Obtain said second disributed media and share the said media data of storing in the Broadcast Control device, and the said media data that obtains is sent to said user terminal.
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