CN103051962B - Program recording method and apparatus - Google Patents

Program recording method and apparatus Download PDF

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Publication number
CN103051962B
CN103051962B CN201110314897.1A CN201110314897A CN103051962B CN 103051962 B CN103051962 B CN 103051962B CN 201110314897 A CN201110314897 A CN 201110314897A CN 103051962 B CN103051962 B CN 103051962B
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China
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described
target program
media stream
described target
control appliance
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CN201110314897.1A
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Chinese (zh)
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CN103051962A (en
Inventor
吕小强
王雷
郜文美
范殊男
张惠萍
陈国乔
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华为终端有限公司
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Abstract

The invention provides a kind of program recording method and apparatus, when IPTV control appliance detect terminal be in cannot recording state or receive terminal send network REC handover request message time, IPTV control appliance sends session initiation protocol request message to down sending content control appliance, described session initiation protocol request message makes down sending content control appliance send real-time streaming protocol notification message to selected down sending content equipment, described real-time streaming protocol notification message makes described down sending content equipment add multicast channel corresponding to the channel identication of described target program, obtain and record the multicast media stream of described target program, adopt program recording method and apparatus provided by the invention, the success rate of program recording business can be improved.

Description

Program recording method and apparatus

Technical field

The embodiment of the present invention relates to IPTV (InternetProtocolTelevision is called for short IPTV) technology, particularly relates to program recording method and apparatus.

Background technology

IPTV system utilizes broadband cable net, Internet technology and multimedia technology etc. is combined together, provides the multiple interactive services comprising Digital Television.Wherein, IPTV system can realize local personal video recorder (LocalPersonalVideoRecorder the is called for short LPVR) business for program recording.Adopt LPVR business, user terminal to recording program and recorded program to be stored in the memory of terminal self or and terminal keep in other equipment communicated to connect.

When the terminal of carrying out recording break down or the memory space inadequate of programs stored time, then terminal cannot be successfully completed the recording of program.

Summary of the invention

The embodiment of the present invention provides a kind of program recording method and apparatus, improves the success rate of program recording.

On the one hand, a kind of program recording method is provided, comprises:

When internet protocol television IPTV control appliance meets switching condition, updating message is sent to IPTV service document equipment, to make described IPTV service document apparatus modifications service document, described switching condition comprises: detect terminal be in cannot recording state or receive described terminal send network REC handover request message;

Described IPTV control appliance sends to down sending content control appliance and at least comprises caching server address, target program side-play amount, the session initiation protocol request message of the channel identication of target program identification and target program, described session initiation protocol request message makes described down sending content control appliance at least comprise described caching server address to the transmission of selected down sending content equipment, described target program side-play amount, the real-time streaming protocol notification message of the channel identication of described target program identification and described target program, described real-time streaming protocol notification message makes described down sending content equipment add multicast channel corresponding to the channel identication of described target program, obtain and record the multicast media stream of described target program, when the moment after described target program initial time adds described target program side-play amount starts to record the moment of the multicast media stream of described target program early than described down sending content equipment, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from caching server corresponding to described caching server address, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.

On the other hand, a kind of program recording method is also provided, comprises:

The real-time streaming protocol notification message of channel identication at least comprising caching server address, target program side-play amount, target program identification and target program receiving that down sending content control appliance sends;

Add the multicast channel that the channel identication of described target program is corresponding, obtain and record the multicast media stream of described target program;

When the moment after described target program initial time adds described target program side-play amount early than the moment starting the multicast media stream recording described target program, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from caching server corresponding to described caching server address, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.

On the other hand, a kind of program recording method is also provided, comprises:

When internet protocol television IPTV control appliance meets switching condition, described IPTV control appliance sends network REC notification message to the communication server, to make the described communication server send described network REC notification message to mobile device, described switching condition comprises: detect terminal be in cannot recording state or receive described terminal send network REC handover request message;

When the network REC confirmation that the described mobile device that described IPTV control appliance receives the transmission of the described communication server returns, described IPTV control appliance sends updating message to IPTV service document equipment, to make described IPTV service document apparatus modifications service document, send to down sending content control appliance and at least comprise target program side-play amount, the session initiation protocol request message of the channel identication of target program identification and target program, described session initiation protocol request message makes described down sending content control appliance at least comprise described target program side-play amount to the transmission of selected down sending content equipment, the real-time streaming protocol notification message of the channel identication of described target program identification and described target program, described real-time streaming protocol notification message makes described down sending content equipment add multicast channel corresponding to the channel identication of described target program, obtain and record the multicast media stream of described target program, when the moment after described target program initial time adds described target program side-play amount starts to record the moment of the multicast media stream of described target program early than described down sending content equipment, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from respective cache server, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.

On the other hand, a kind of program recording method is also provided, comprises:

Receive the real-time streaming protocol notification message at least comprising the channel identication of target program side-play amount, target program identification and target program that down sending content control appliance sends;

Add the multicast channel that the channel identication of described target program is corresponding, obtain and record the multicast media stream of described target program;

When the moment after described target program initial time adds described target program side-play amount early than the moment starting the multicast media stream recording described target program, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from respective cache server, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.

On the other hand, a kind of internet protocol television IPTV control appliance is also provided, comprises:

Detecting unit, whether be in for sense terminals cannot recording state;

Receiving element, for receiving the network REC handover request message that described terminal sends;

Transmitting element, for detect when described detecting unit described terminal be in cannot recording state or described receiving element receive the network REC handover request message that described terminal sends time, updating message is sent, to make described IPTV service document apparatus modifications service document to IPTV service document equipment; send to down sending content control appliance and at least comprise caching server address, target program side-play amount, the session initiation protocol request message of the channel identication of target program identification and target program, described session initiation protocol request message makes described down sending content control appliance at least comprise described caching server address to the transmission of selected down sending content equipment, described target program side-play amount, the real-time streaming protocol notification message of the channel identication of described target program identification and described target program, described real-time streaming protocol notification message makes described down sending content equipment add multicast channel corresponding to the channel identication of described target program, obtain and record the multicast media stream of described target program, when the moment after described target program initial time adds described target program side-play amount starts to record the moment of the multicast media stream of described target program early than described down sending content equipment, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from caching server corresponding to described caching server address, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.

On the other hand, a kind of down sending content equipment is also provided, comprises:

Receiving element, for the real-time streaming protocol notification message of channel identication at least comprising described caching server address, described target program side-play amount, described target program identification and described target program receiving that down sending content control appliance sends;

First recording elements, the multicast channel that the channel identication for adding described target program when described receiving element receives described real-time streaming protocol notification message is corresponding, obtains and records the multicast media stream of described target program;

Second recording elements, for start to record the multicast media stream of described target program early than described first recording elements when in the moment after described target program initial time adds described target program side-play amount moment, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from caching server corresponding to described caching server address;

Transmitting element, for sending first real time transport protocol RTP packet number of the multicast media stream that described first recording elements is recorded to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.

On the other hand, a kind of internet protocol television IPTV control appliance is also provided, comprises:

Detecting unit, whether be in for sense terminals cannot recording state;

First receiving element, for receiving the network REC handover request message that described terminal sends;

First transmitting element, for detect when described detecting unit described terminal be in cannot recording state or described receiving element receive the network REC handover request message that described terminal sends time, send network REC notification message to the communication server, send described network REC notification message to make the described communication server to mobile device;

Second receiving element, the network REC confirmation that the described mobile device sent for receiving the described communication server returns;

Second transmitting element, for when described second receiving element receives described network REC confirmation, sends updating message, to make described IPTV service document apparatus modifications service document to IPTV service document equipment; send to down sending content control appliance and at least comprise target program side-play amount, the session initiation protocol request message of the channel identication of target program identification and target program, described session initiation protocol request message makes described down sending content control appliance at least comprise described target program side-play amount to the transmission of selected down sending content equipment, the real-time streaming protocol notification message of the channel identication of described target program identification and described target program, described real-time streaming protocol notification message makes described down sending content equipment add multicast channel corresponding to the channel identication of described target program, obtain and record the multicast media stream of described target program, when the moment after described target program initial time adds described target program side-play amount starts to record the moment of the multicast media stream of described target program early than described down sending content equipment, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from respective cache server, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.

On the other hand, a kind of down sending content equipment is also provided, comprises:

Receiving element, for receiving the real-time streaming protocol notification message at least comprising the channel identication of described target program side-play amount, described target program identification and described target program that down sending content control appliance sends;

First recording elements, the multicast channel that the channel identication for adding described target program when described receiving element receives described real-time streaming protocol notification message is corresponding, obtains and records the multicast media stream of described target program;

Second recording elements, for start to record the multicast media stream of described target program early than described first recording elements when in the moment after described target program initial time adds described target program side-play amount moment, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from respective cache server;

Transmitting element, for sending first real time transport protocol RTP packet number of the multicast media stream that described first recording elements is recorded to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.

As shown from the above technical solution, when terminal cannot carry out program recording, can by target performance recording to network side, and the partial target program before recording from caching server obtains down sending content equipment, thus ensure the integrality of target program, avoid in prior art when the terminal of carrying out recording breaks down or the memory space inadequate of programs stored time correctly cannot complete the defect of program recording, thus improve the success rate of program recording business.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the flow chart of the program recording method of the embodiment of the present invention one;

Fig. 2 is the flow chart of the program recording method of the embodiment of the present invention two;

Fig. 3 is the signaling process figure of the program recording method of the embodiment of the present invention three;

Fig. 4 is the signaling process figure of the first triggering mode of the program recording method of the embodiment of the present invention three;

Fig. 5 is the signaling process figure of the second triggering mode of the program recording method of the embodiment of the present invention three;

Fig. 6 is the flow chart of the third triggering mode of the program recording method of the embodiment of the present invention three;

Fig. 7 is the flow chart of the 4th kind of triggering mode of the program recording method of the embodiment of the present invention three;

Fig. 8 is the flow chart of the network REC confirmation of the user of the IPTV controlled entity acquisition use terminal of the program recording method of the embodiment of the present invention three;

Fig. 9 is the signaling course diagram of the program recording method of the embodiment of the present invention four;

Figure 10 is the structural representation of the IPTV control appliance of the embodiment of the present invention five;

Figure 11 is the structural representation of the down sending content equipment of the embodiment of the present invention six;

Figure 12 is the structural representation of the IPTV control appliance of the embodiment of the present invention seven;

Figure 13 is the structural representation of the down sending content equipment of the embodiment of the present invention eight.

Embodiment

For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

It should be noted that: terminal involved in the embodiment of the present invention includes but not limited to television set or video playback apparatus or Set Top Box etc., mobile device includes but not limited to the radio hand-held equipments such as mobile phone, mobile phone or portable equipment, target program side-play amount be when IPTV control appliance detect terminal be in cannot recording state or receive initial time early than target program of moment of network REC handover request that described terminal sends time, target program side-play amount is set as 0, otherwise, target program side-play amount be set as described IPTV control appliance detect terminal be in cannot recording state or receive described terminal send the moment of network REC handover request and the difference of target program initial time, wherein, each described moment can be system time, such as, target program initial time is 13:18:00, IPTV control appliance detects that terminal is in cannot recording state or to receive moment of network REC handover request that described terminal sends be 13:28:16, so difference is 00:10:16, certainly the expression format of moment and difference is not limited.

Embodiment one

Fig. 1 is the flow chart of the program recording method of the embodiment of the present invention one.As shown in Figure 1, the method comprises following process.

Step 111: when IPTV control appliance meets switching condition, IPTV control appliance sends updating message to IPTV service document equipment.

In this step, when IPTV control appliance meets switching condition, IPTV control appliance sends updating message, to make IPTV service document apparatus modifications service document to IPTV service document equipment.Particularly, switching condition can comprise: detect terminal be in cannot recording state or receive terminal send network REC handover request message.

Step 112:IPTV control appliance sends session initiation protocol request message to down sending content control appliance.

In this step, IPTV control appliance sends session initiation protocol request message to down sending content control appliance, at least comprises in this session initiation protocol request message: the channel identication of caching server address, target program side-play amount, target program identification and target program.This session initiation protocol request message makes down sending content control appliance send real-time streaming protocol notification message to selected down sending content equipment.At least comprise in this real-time streaming protocol notification message: the channel identication of caching server address, target program side-play amount, target program identification and target program.This real-time streaming protocol notification message makes down sending content equipment add multicast channel corresponding to the channel identication of target program, obtains and records the multicast media stream of target program.And when the moment after this target program initial time adds target program side-play amount starts to record the moment of the multicast media stream of target program early than down sending content equipment, down sending content equipment obtains and records the unicast media stream of target program from target program initial time adds the moment after target program side-play amount from caching server corresponding to caching server address.Down sending content equipment sends first real time transport protocol (Real-timeTransportProtocol of the multicast media stream recorded to caching server, be called for short RTP) packet number, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with first RTP packet number that down sending content equipment sends to make caching server.

On the basis of technique scheme, further, in step 111, when IPTV control appliance meets switching condition, IPTV control appliance, before sending updating message to IPTV service document equipment, first can also perform following steps, comprise:

First, IPTV control appliance sends network REC notification message to the communication server, sends network REC notification message to make the communication server to mobile device.

Then, the network REC confirmation that the mobile device that IPTV control appliance received communication server sends returns.

After execution above-mentioned steps, IPTV control appliance, again according to the record of step 111, sends updating message to IPTV service document equipment.

In addition, for down sending content equipment, down sending content equipment performs following steps accordingly:

The real-time streaming protocol notification message of channel identication at least comprising caching server address, target program side-play amount, target program identification and target program receiving that down sending content control appliance sends;

Add the multicast channel that the channel identication of described target program is corresponding, obtain and record the multicast media stream of described target program;

When the moment after described target program initial time adds described target program side-play amount early than the moment starting the multicast media stream recording described target program, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from caching server corresponding to described caching server address, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.

Adopt the technical scheme in the embodiment of the present invention one, when terminal cannot carry out program recording, can by target performance recording to network side, and the partial target program before recording from caching server obtains down sending content equipment, thus ensure the integrality of target program, avoid in prior art when the terminal of carrying out recording breaks down or the memory space inadequate of programs stored time correctly cannot complete the defect of program recording, thus improve the success rate of program recording business.

Embodiment two

Fig. 2 is the flow chart of the program recording method of the embodiment of the present invention two.As shown in Figure 2, the method comprises following process.

Step 121: when IPTV control appliance meets switching condition, IPTV control appliance sends network REC notification message to the communication server.

In this step, when IPTV control appliance meets switching condition, IPTV control appliance sends network REC notification message to the communication server, sends network REC notification message to make the communication server to mobile device.Particularly, switching condition can comprise: detect terminal be in cannot recording state or receive terminal send network REC handover request message.

Step 122: when the network REC confirmation that the mobile device that IPTV control appliance receives communication server transmission returns, IPTV control appliance sends updating message to IPTV service document equipment.

In this step, when the network REC confirmation that the mobile device that IPTV control appliance receives communication server transmission returns, IPTV control appliance sends updating message, to make IPTV service document apparatus modifications service document to IPTV service document equipment.

Step 123:IPTV control appliance sends session initiation protocol request message to down sending content control appliance.

In this step, IPTV control appliance sends session initiation protocol request message to down sending content control appliance, at least comprises the session initiation protocol request message of the channel identication of target program side-play amount, target program identification and target program in this session initiation protocol request message.This session initiation protocol request message makes down sending content control appliance send real-time streaming protocol notification message to selected down sending content equipment.At least comprise in this real-time streaming protocol notification message: the channel identication of target program side-play amount, target program identification and target program.This real-time streaming protocol notification message makes down sending content equipment add multicast channel corresponding to the channel identication of target program, obtains and records the multicast media stream of target program.And, when the moment starting early than down sending content equipment the multicast media stream recording target program when in the moment after target program initial time adds target program side-play amount, down sending content equipment obtains and records the unicast media stream of target program from target program initial time adds the moment after target program side-play amount from respective cache server.Down sending content equipment sends first RTP packet number of the multicast media stream recorded to caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with first RTP packet number that down sending content equipment sends to make caching server.

In addition, for down sending content equipment, down sending content equipment performs following steps accordingly:

Receive the real-time streaming protocol notification message at least comprising the channel identication of target program side-play amount, target program identification and target program that down sending content control appliance sends;

Add the multicast channel that the channel identication of described target program is corresponding, obtain and record the multicast media stream of described target program;

When the moment after described target program initial time adds described target program side-play amount early than the moment starting the multicast media stream recording described target program, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from respective cache server, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.

It should be noted that, the caching server in embodiment two corresponding to down sending content equipment can be pre-configured.

In step 121 in step 111 in embodiment one and embodiment two, described switching condition can comprise: detecting that terminal is in cannot recording state or receive the network REC handover request message that terminal sends.

Wherein, detect that terminal is in and specifically cannot can comprise following three kinds of situations by recording state: situation one: when arriving the initial time of target program, IPTV control appliance sends local recording state request message to terminal, if exceed default return time not receive the response that terminal returns, be then at the initial time of target program cannot recording state for IPTV control appliance determination terminal.Situation two: during Preset Time after the initial time arriving target program, IPTV control appliance detects the session status of local personal video recorder LPVR corresponding to target program, when detecting that the session of the LPVR that target program is corresponding is not set up, IPTV control appliance determination terminal is at the initial time of target program cannot recording state.Situation three: IPTV control appliance periodically detects the session status of LPVR, and when detecting that terminal departs from network, IPTV control appliance determination terminal is at the initial time of target program cannot recording state.

Wherein, receive the network REC handover request message that terminal sends, comprise: IPTV control appliance receives terminal and sends network REC handover request message, at least comprises: target program side-play amount, the channel identication of target program identification and target program in network REC handover request message.

Adopt the technical scheme in the embodiment of the present invention two, when terminal cannot carry out program recording, can by target performance recording to network side, and the partial target program before recording from caching server obtains down sending content equipment, thus ensure the integrality of target program, avoid in prior art when the terminal of carrying out recording breaks down or the memory space inadequate of programs stored time correctly cannot complete the defect of program recording, thus improve the success rate of program recording business.

The above-mentioned program recording method that the present invention proposes can be applied to the network architecture of existing IPTV system, keep the annexation between equipment in the network architecture of existing IPTV system and each equipment, and, on the basis of the network architecture of existing IPTV system, increase an equipment at network side: caching server.Such as, system comprises: IPTV control appliance, bcmcs controller, down sending content controller and caching server, further, can also comprise IPTV service document equipment in system.To open IPTV forum (OpenIPTVForum, being called for short OITF) IPTV system that proposes is example, the network architecture of this system comprises: internet protocol multimedia system gateway (IPMultimediaSubsystemGetway, be called for short IG), IPTV terminal entity (OpenIPTVTerminalFunction, be called for short OITF), IPTV controlled entity, IPTV service document entity, Content Delivery Network controller (ContentDeliveryNetworkController, be called for short CDNC), cluster controller (ClusterController, be called for short CC) and down sending content entity (ContentDeliveryFunction, be called for short CDF).Wherein, using IPTV controlled entity as above-mentioned IP TV control appliance, issue control appliance using CC as foregoing, issue equipment using CDF as foregoing, using IPTV service document entity as above-mentioned IP TV service document equipment.Further, in the IPTV system that OITF proposes, by IG and OITF compositing terminal, in actual applications, IG and OITF can integratedly be produced in same terminal, and this terminal is positioned at the user side of IPTV system.All the other entities in this network architecture or equipment, such as IPTV controlled entity, IPTV service document entity, CDNC, CC and CDF etc., be positioned at the network side of IPTV system.

In the IPTV system proposed OITF respectively by specific embodiment below, program recording method of the present invention is described.

Embodiment three

Fig. 3 is the signaling process figure of the program recording method of the embodiment of the present invention three.In the embodiment of the present invention three, be example with LPVR business and network personal video recorder (NetworkPersonalVideoRecorder the is called for short NPVR) business of having contracted of the user with program recording demand.NPVR business is also for program recording.The difference of NPVR business and LPVR business is, NPVR business performs program recording by the equipment of network side and operates, and is stored in the equipment of network side by recorded program.To need the user of program recording to have contracted LPVR business and NPVR business in the embodiment of the present invention two, when LPVR business cannot successful execution time, by triggering switching flow, NPVR business can be switched to and carry out program recording.As shown in Figure 3, the method comprises following process.

Step 201:IPTV controlled entity performs handover trigger flow process, or IPTV controlled entity performs handover trigger flow process with the terminal comprising OITF and IG.

In this step, with the terminal comprising OITF and IG completed log in IPTV network be operating as example.After this terminal signs in network, when a triggering condition is met, IPTV controlled entity performs handover trigger flow process, or IPTV controlled entity performs handover trigger flow process with the terminal comprising OITF and IG.The mode and the corresponding handover trigger flow process that judge to meet switching condition are particularly described in detail by the detailed process shown in Fig. 4 to Fig. 7.

After step 201, user ID that can be corresponding to the terminal comprising OITF and IG NPVR business of whether having contracted is verified, comprises following step 202 to step 204.In other specific embodiment, can not carry out this process, namely step 202 to step 204 is optional step, after step 201, can not perform step 202 to step 204, and directly perform subsequent step.

Step 202:IPTV controlled entity sends service document request message to IPTV service document entity.

In this step, service document request message comprises: user ID.Before step 201, terminal has signed in in IPTV system, and in the login process of this terminal, IPTV controlled entity can obtain user ID corresponding to this terminal.In step 202., user ID corresponding for this terminal is carried in service document request message and sends to IPTV service document entity by IPTV controlled entity, obtains service document corresponding to this user ID to IPTV service document entity requests.

Step 203:IPTV service document entity is to IPTV controlled entity return service file response message.

In this step, service document response message comprises: user ID and service document.IPTV service document entity obtains service document corresponding to this user ID according to user ID, and this service document is returned IPTV controlled entity.

Step 204:IPTV controlled entity carries out the checking of NPVR service contracting to this terminal.

After step 204, IPTV controlled entity first can obtain the confirmation of the user using this terminal, then performs subsequent step; Also directly subsequent step can be performed.Particularly, the process that IPTV controlled entity acquisition user confirms comprises the steps 205.

Step 205:IPTV controlled entity obtains the network REC confirmation of the user using terminal.

In this step, IPTV controlled entity sends network REC notification message to the mobile device using the user of terminal of IPTV system to specify.This mobile device can comprise the mobile communication equipment arbitrarily such as mobile phone, panel computer preset.IPTV controlled entity sends network REC notification message to above-mentioned mobile device, and this message is for inquiring whether user agrees to adopt network REC mode.When after the acknowledge message receiving user's reply, IPTV controlled entity continues to perform subsequent step.Or IPTV controlled entity arranges timer, and this timer starts after above-mentioned network REC notification message sends, when the timer has lapsed, if also confiscate the message of user's reply, then IPTV controlled entity continues to perform subsequent step.Be equivalent to IPTV controlled entity do not receive in Preset Time user reply, acquiescence received user reply acknowledge message.Particularly, the detailed process of step 205 describes in detail by the embodiment shown in Fig. 8.It should be noted that step 205 is optional steps.

After step 205, the network REC state of service document corresponding to this terminal is changed.Comprise following step 206 to step 207.

Step 206:IPTV controlled entity sends service document updating message to IPTV service document entity.

In this step, the combination of in following information or several can be comprised in service document updating message: the initial time of user ID, updating type, more fresh content, target program identification, target program.Wherein, what updating type was used to indicate required renewal is the network REC state of service document and/or local recording state.More fresh content is used to indicate the state content after renewal, such as: " receiving instruction ", " recording ", " recording completes " etc.

Step 207:IPTV service document entity amendment service document.

In this step, the network REC status modifier in service document corresponding for the user ID in request message is by IPTV service document entity: " receiving instruction ".

Step 208:IPTV controlled entity sends the request message of SIP to CC by CDNC.

In this step, the information identical with the request message of SIP of the prior art can be comprised in the request message of SIP, such as: the channel identication of target program, target program identification (ProgremID), request type are beginning (RequestType=start) etc., wherein, the channel identication of target program and broadcast service mark (BCServiceID), be used to indicate the channel at target program place; Target program identification is used to indicate target program; Request type starts program recording for starting to be used to indicate request.Further, in this step 208 SIP request message in also comprise following information: the side-play amount of target program.

Alternatively, comprise at the request message of SIP on the basis of above-mentioned information, can also comprise in this message: the IP address of caching server.

Step 209:CC selects CDF.

In this step, CC is the CDF that this recording operation is selected to be applicable to.Particularly, CC can select according to any means in existing CDF system of selection, such as: according to the geographical location choice of the user of use terminal, according to methods such as load balancing principle selections.

Step 210:CC sends the notification message of real time streaming transport protocol (RealTimeStreamingProtocol is called for short RTSP) to CDF.

In this step, the notification message of RTSP is sent to the CDF selected in step 209 by CC.Following information can be comprised: the IP address of target program place multicast channel, the side-play amount of target program, target program identification, the channel identication of target program and the IP address of caching server in the notification message of this RTSP.

Step 211:CDF sends 200OK response to CC.

After step 211, perform step 212, start CDF and record flow process, comprise the following steps 212 to step 216.

Step 212:CC sets up message to CDF transmission RTSP's.

Step 213:CDF adds the multicast channel at target program place and the multicast media stream of receiving target program.

In this step, CDF determines multicast channel according to the IP address of target program place multicast channel, receives the multicast media stream on this multicast channel from the transmission process entity (TransportProcessingFunction is called for short TPF) of network side.

Step 214:CDF returns 200OK response to CC.

Step 215:CC sends the recording message of RTSP to CDF.

Step 216:CDF records the multicast media stream of the target program received.

When the moment starting early than down sending content equipment the multicast media stream recording target program when in the moment after target program initial time adds target program side-play amount, start caching server amended record flow process.This caching server amended record flow process for record from the initial time of target program adds the moment after target offset amount to CDF, record multicast media stream moment target program, the complete recording of realize target program.As shown in Figure 3:

After above-mentioned steps 216, start caching server amended record flow process, perform the process of step 231 to step 234.

Step 231:CDF sends amended record request message to caching server.

In this step, following information can be comprised in amended record request: the channel identication of target program, target program identification and target program side-play amount.

Step 232: caching server returns 200OK response to CDF.

Step 233: caching server sends the unicast media stream from a particular moment to CDF, and wherein, this particular moment is the moment after target program initial time adds target program side-play amount.

Step 234:CDF records above-mentioned unicast media stream.

Above-mentioned steps 231 to step 234 is caching server amended record flow process, and step 212 is to step 216 for CDF records flow process, and above-mentioned two flow processs all perform after step 211.

Step 235:CDF sends to caching server and stops unicast media stream request message.

In this step, above-mentioned stopping unicast media stream request message comprises following information: first RTP packet number of the multicast media stream of recording.

Step 236: when the sequence number of the current RTP bag of unicast media stream is equal with first RTP packet number of the multicast media stream of the recording that CDF sends, caching server stops sending unicast media stream.

In this step, caching server is when sending each RTP and wrapping, and the sequence number that the RTP sent CDF in the sequence number of current RTP bag sent and step 235 wrap compares, when both are identical, and caching server stopping transmission unicast media stream.

In above process, if only performing step 212 after step 211, to record flow process caching server to the CDF of step 216 be pre-configured, then need not comprise the IP address containing above-mentioned caching server in the notification message of the RTSP in the request message of the SIP in above-mentioned steps 208 and step 210.If caching server is not pre-configured, then comprise the IP address of above-mentioned caching server in the notification message of the RTSP in the request message of the SIP in above-mentioned steps 208 and step 210.

When only performing the CDF of step 212 to step 216 and recording flow process, after execution of step 216, perform following steps 217.When not only performing above-mentioned CDF and recording flow process but also perform caching server amended record flow process, after execution of step 236, perform following steps 217.

Step 217:CDF returns 200OK response to CC.

In this step, CDF returns 200OK response corresponding to the recording message of the RTSP in step 215 to CC.

Step 218:CC forwards 200OK response by CDNC to IPTV controlled entity.

After step 218, the PVR record in IPTV controlled entity amendment IPTV metadata entity.Specifically comprise following step 219 to step 220.In other specific embodiment, PVR record of can not modifying, namely step 219 to step 220 is optional step, after step 218, can not perform step 219 to step 220, and directly perform subsequent step.

Step 219:IPTV controlled entity sends the renewal of extensible markup language configuration access protocol (ExtensibleMarkupLanguageConfigurationAccessProtocol is called for short XCAP) to IPTV metadata entity or creates message.

In this step, XCAP renewal or create message comprise following information: target program identification.

Step 220:IPTV metadata entity returns 200OK response to IPTV controlled entity.

After step 220, the network REC state in IPTV controlled entity amendment service document and local recording state.Specifically comprise following step 221 to step 222.In other specific embodiment, can not revise NPVR and the LPVR in service document, namely step 220 to step 221 is optional step, after step 220, can not perform step 221 to step 222, and directly perform subsequent step.

Step 221:IPTV controlled entity sends service document updating message to IPTV service document entity.

In this step, service document updating message comprises the combination of in following information or several: the initial time of user ID, updating type, more fresh content, target program identification, target program.Wherein, updating type is network REC state and local recording state, and the more fresh content of network REC state is: " recording ", and the more fresh content of local recording state is " network REC ".

Step 222:IPTV service document entity amendment service document.

In this step, the network REC status modifier in service document corresponding for user ID is " recording " by IPTV service document entity, is revised as " network REC " by local recording state.

Record in the process of target program at CDF, IPTV metadata entity keep above-mentioned network REC state and local recording state constant, after CDF completes the recording operation of target program, continue to perform following step 223 to step 227.

Step 223:CDF exits the multicast channel at target program place.

Step 224:IPTV controlled entity sends XCAPPUT message to IPTV metadata entity.

In this step, XCAPPUT message comprises following information: target program identification.

Step 225:IPTV metadata entity returns 200OK response to IPTV controlled entity.

Step 226:IPTV controlled entity sends service document updating message to IPTV service document entity.

In this step, service document updating message comprises the combination of in following information or several: the initial time of user ID, updating type, more fresh content, target program identification, target program.Wherein, updating type is network REC state and local recording state, and the more fresh content of network REC state is: " recording completes ", and the more fresh content of local recording state is " network REC completes ".

After step 227:IPTV service document entity receives network REC end, amendment service document.

In this step, the network REC status modifier in service document corresponding for user ID is " recording completes " by IPTV service document entity, is revised as " network REC completes " by local recording state.

In the embodiment of the present invention three, switchover policy cannot be set for the various possible reason of normal program recording according to causing terminal, the terminal trigger network recording process of network equipment or user side can be passed through, also can be undertaken mutual with trigger network recording process by the terminal of the equipment of network side and user side, when terminal is owing to playing or recording other program, or terminal is in fault or off-position, or record in terminal in the process of target program and record again or play other program, and when cannot carry out program recording, can by target performance recording to network side, thus can the successful recording of realize target program, improve the success rate of program recording business.

In above-mentioned steps 201, IPTV controlled entity performs handover trigger flow process, or IPTV controlled entity performs handover trigger flow process together with the terminal comprising OITF with IG, particularly, the handover trigger flow process in the embodiment of the present invention three step 201 can adopt multiple concrete triggering mode.

Below respectively by four kinds of embodiments, kind of the triggering mode of four is wherein described, in actual IPTV system, according to the concrete condition of practical application, other triggering mode can also be adopted.

Fig. 4 is the signaling process figure of the first triggering mode of the program recording method of the embodiment of the present invention three.As shown in Figure 4, this triggering mode can comprise following process, and following process is the concrete refinement to step 201 in the embodiment of the present invention three.

OITF in step 301:IPTV controlled entity and terminal arranges timer respectively.

In this step, according to the target program that the predetermined needs of user are recorded, the OITF in IPTV controlled entity and terminal arranges timer respectively, and above-mentioned two timers are synchronous, and then the moment is the initial time of target program.

Step 302: when the then moment of the timer of IPTV controlled entity arrives, IPTV controlled entity sends local recording state request message to the IG in terminal.

In this step, when with when arriving the initial time of the target program that the predetermined needs of user are recorded, the timer of the OITF in IPTV controlled entity and terminal then simultaneously.

After step 302, have two kinds to need to trigger situation about switching.

Situation one: other program of non-targeted program is being play or recorded to the terminal (comprising OITF and IG) of active user side, then perform step 303.

Step 303: the IG in terminal returns 486 responses to IPTV controlled entity.

In this step, the IG in terminal returns 486 responses to IPTV controlled entity, this 486 response and busy response, is in busy state for representing that sender is current.

Step 304:IPTV controlled entity judges that terminal is at the initial time of target program cannot recording state, meets handover triggering condition.

Situation two: the terminal of active user side breaks down or is in off-position at (comprising OITF and IG), then perform step 305.

Step 305:IPTV controlled entity is when exceeding default return time and not receiving the response that the IG in terminal returns, and judging that terminal is at the initial time of target program cannot recording state, meets handover triggering condition.

After above-mentioned steps 304, or after above-mentioned steps 305, continue the step 202 performing the embodiment of the present invention three.The step of the embodiment of the present invention three shown in other step with Fig. 3 in program recording method is identical, does not repeat them here.

Adopt the first triggering mode of the program recording method of the embodiment of the present invention three shown in Fig. 4, if in the target program start time of user's scheduled recording, user is watching other program or is recording other program, or, if the terminal of user side is in malfunction or off-position in target program start time, adopt by the mode of the local recording state of IPTV controlled entity inquiry terminal, according to above-mentioned steps 301 to step 305, IPTV controlled entity all can be judged to meet switching condition, thus the CDF entering the employing network side of the embodiment of the present invention three records the process of target program.

Fig. 5 is the signaling process figure of the second triggering mode of the program recording method of the embodiment of the present invention three.As shown in Figure 5, this triggering mode can comprise following process, and following process is the concrete refinement to step 201 in the embodiment of the present invention three.

Step 401:OITF sends the network REC handover request message of HTML (Hypertext Markup Language) (HyperTextTransferProtocol is called for short HTTP) to IG.

The network REC handover request message conversion of HTTP is that the network REC handover request information and sending of SIP is to IPTV controlled entity by step 402:IG.

In this step, IG carries out the protocol conversion from HTTP to SIP.Following information can be comprised: the channel identication of target program, target program identification, the initial time (ProgramStartTime) of target program, the duration (ProgramDurationTime) of target program in the network REC handover request message of above-mentioned SIP, further, in step 402 SIP network REC handover request message in also comprise: the side-play amount of target program.

After above-mentioned steps 402, continue the step 202 performing the embodiment of the present invention three.Further, adopt the second triggering mode, after the step 204 of the embodiment of the present invention three, can also comprise:

Step 403:IPTV controlled entity returns the 200OK response of SIP to IG.

Step 404:IG returns the 200OK response of HTTP to OITF.

The step of the embodiment of the present invention three shown in other step with Fig. 3 in program recording method is identical, does not repeat them here.

Adopt the second triggering mode of the program recording method of the embodiment of the present invention three shown in Fig. 5, if in the target program start time of user's scheduled recording, user is watching other program or is recording other program, or, user starts the program watching other in the process recording target program, or, the memory space inadequate of terminal (comprising IG and OITF), adopt the mode being initiated handover request by the terminal of user side, particularly, handover request is initiated by the IG in terminal, according to above-mentioned steps 401 to step 402, IPTV controlled entity all can be judged to meet handover triggering condition switching condition, thus the CDF entering the employing network side of the embodiment of the present invention three records the process of target program.

Fig. 6 is the flow chart of the third triggering mode of the program recording method of the embodiment of the present invention three.As shown in Figure 6, this triggering mode can comprise following process, and following process is the concrete refinement to step 201 in the embodiment of the present invention three.

OITF in step 501:IPTV controlled entity and terminal arranges timer respectively.

In this step, according to the target program that the predetermined needs of user are recorded, the OITF in IPTV controlled entity and terminal arranges timer respectively.Wherein, the then moment of the timer of OITF is the initial time of target program, and the then time of the timer of IPTV controlled entity, then the moment delayed Preset Time than the then moment of the timer of OITF, i.e. Preset Time after the initial time of target program.The time span of above-mentioned Preset Time is general shorter, such as, can be 30 seconds.

Step 502: when the timer of IPTV controlled entity is to constantly, IPTV controlled entity detects the session status of LPVR corresponding to target program.

Step 503: when detecting that the session of the LPVR that target program is corresponding is not set up, IPTV controlled entity judges that terminal is at the initial time of target program cannot recording state, meets handover triggering condition.

After above-mentioned steps 503, continue the step 202 performing the embodiment of the present invention three.The step of the embodiment of the present invention three shown in other step with Fig. 3 in program recording method is identical, does not repeat them here.

Adopt the third triggering mode of the program recording method of the embodiment of the present invention three shown in Fig. 6, if in the target program start time of user's scheduled recording, user is watching other program or is recording other program, or, if the terminal of user side is in malfunction or off-position in target program start time, adopt the mode being detected LPVR session status by IPTV controlled entity, according to above-mentioned steps 501 to step 503, IPTV controlled entity all can be judged to meet switching condition, thus the CDF entering the employing network side of the embodiment of the present invention two records the process of target program.

Fig. 7 is the flow chart of the 4th kind of triggering mode of the program recording method of the embodiment of the present invention three.As shown in Figure 7, this triggering mode can comprise following process, and following process is the concrete refinement to step 201 in the embodiment of the present invention three.

Step 601:IPTV controlled entity periodically detects the session status of LPVR according to session keepalive function.

Step 602: when detecting that IG or OITF departs from network, IPTV controlled entity judges that terminal is at the initial time of target program cannot recording state, meets switchover policy.

After above-mentioned steps 602, continue the step 202 performing the embodiment of the present invention three.

Especially, adopt the 4th kind of triggering mode of the program recording method of the embodiment of the present invention three shown in Fig. 6, in the request message of SIP in step 207, the step of the embodiment of the present invention three shown in other step with Fig. 3 in program recording method is identical, does not repeat them here.

Adopt the 4th kind of triggering mode of the program recording method of the embodiment of the present invention three shown in Fig. 7; if after starting to record target program according to existing program recording method; the terminal of user side breaks down or power-off and depart from network; adopt the mode of the session status periodically being detected LPVR by IPTV controlled entity by session keepalive mechanism; according to above-mentioned steps 601 to step 602; IPTV controlled entity can be judged to meet switching condition, thus the CDF entering the employing network side of the embodiment of the present invention two records the process of target program.

On the basis of technique scheme, in the invention described above embodiment three, to contract LPVR business and NPVR business for the user with program recording demand, in other embodiment, also can not require that this user had contracted NPVR business, and only require that this user contracted LPVR business.Particularly, user contracts LPVR business, and the recording arrangement of network side, as the supplementing of terminal of user side, when the terminal of user side successfully cannot realize LPVR, carries out program recording by the equipment of IPTV controlled entity opening network side.Adopt the program recording method of this mode, above-mentioned trigger condition and trigger switching flow and be no longer used to indicate and be switched to NPVR business, but be used to indicate the equipment being switched to network side and carry out program recording.Triggering mode still can adopt kind of the triggering mode of four shown in above-mentioned Fig. 4 to Fig. 7 particularly.Adopt the program recording method of this mode, the difference of the detailed process of the embodiment of the present invention three shown in its detailed process and Fig. 3 is: first, adopt in the program recording method of this mode and do not comprise above-mentioned steps 202 to step 206, after execution of step 201, directly perform step 207.Second, adopt in the program recording method of this mode, only record local recording state in the service document stored in IPTV service document entity, and do not record network REC state, therefore, in step 221, during IPTV service document entity amendment service document, the local recording state only in this service document is revised as " network REC ", in step 226, during IPTV service document entity amendment service document, only the local recording state in this service document is revised as " network REC completes ".Adopt other step of the program recording method of this mode all identical with the embodiment of the present invention three shown in Fig. 2, do not repeat them here.

On the basis of technique scheme, user no matter is adopted to contract the program recording mode of LPVR business and NPVR business, or adopt the program recording mode of user's only signing LPVR business, no matter adopt concrete any triggering mode of above-mentioned four kinds of triggering modes, after CDF completes the recording for target program, when terminal can normally use, all the target program that CDF records can be issued in terminal.Below by way of the embodiment of the present invention four, the process of issuing is described, each step in embodiment four, can performs after above-mentioned steps 226.

Fig. 8 is the flow chart of the network REC confirmation of the user of the IPTV controlled entity acquisition use terminal of the program recording method of the embodiment of the present invention three.In the embodiment shown in fig. 8, the detailed process of the step 205 of the embodiment of the present invention three shown in above-mentioned Fig. 3 is described in detail.As shown in Figure 8, the detailed process of step 205 comprises the steps.

Step 2051:IPTV controlled entity sends network REC notification message to the communication server.

In this step, can carry network REC content of announcement, and carry reply code in this network REC notification message, such as, code 0 represents confirmation, and code 1 makes difficulties.

Step 2052: the communication server sends network REC notification message to mobile device.

In this step, mobile terminal is the mobile device using the user of the terminal of IPTV system to specify, the such as mobile communication equipment such as mobile phone, panel computer.The content of carrying in the network REC notification message of this step is identical with the content of carrying in the network REC notification message of step 2051.

Step 2053: mobile device returns response message to the communication server.

In this step, according to the network REC notification message of citing in step 2051, correspondingly, if user agrees to carry out network REC, then mobile device returns network REC confirmation by response message to the communication server, and particularly, this response message comprises code 0; If user does not agree to carry out network REC, then mobile device returns network REC by response message to the communication server and opposes information, and particularly, this response message comprises code 1.

Step 2054: the communication server returns response message to IPTV controlled entity.

In this step, response message is identical with the content that the response message in step 2053 is carried.After IPTV controlled entity receives response message, response message is judged.If response message comprises network REC confirmation, then continue to perform subsequent step, in the embodiment of the present invention three shown in Fig. 3, namely continue to perform step 206.If response message comprises network REC oppose information, then terminate the program recording flow process of the embodiment of the present invention three shown in Fig. 3.

In the detailed process of the step 205 shown in Fig. 8, receive the acknowledge message of user's reply for IPTV controlled entity.In actual applications, likely there is the situation that user can not reply message in time, then timer can be set on IPTV controlled entity, this timer starts after above-mentioned network REC notification message sends, when the timer has lapsed, if also confiscate the message that user replys, then IPTV controlled entity continues to perform subsequent step.Be equivalent to IPTV controlled entity do not receive in Preset Time user reply, acquiescence received user reply acknowledge message.

In the embodiment shown in Fig. 8, to adopt instant message (InstantMessage is called for short IMS) mode to be example, therefore IPTV controlled entity is as IPTV server, and above-mentioned steps 2051 and step 2054 are performed by IPTV controlled entity.In other embodiment, short message (ShortMessage can also be adopted, be called for short SMS) mode, when adopting SMS mode, therefore IPTV controlled entity and IPTV application entity combine after as IPTV server, above-mentioned steps 2051 and step 2054 are cooperated by IPTV controlled entity and IPTV application entity and perform.

In the detailed process of above-mentioned steps 205, inquire the forward direction user carrying out network REC, after the license obtaining user confirms, continue to perform subsequent step, start network REC operation, thus add flexibility and the controllability of program recording method.

Embodiment four

Fig. 9 is the signaling course diagram of the program recording method of the embodiment of the present invention four.As shown in Figure 9, the method comprises following process.

Step 701:IPTV controlled entity detects the operating state of OITF and IG.

Step 702: when IPTV controlled entity detects that the operating state of OITF and IG is normal, IPTV controlled entity sends content to IG and downloads notification message.

In this step, content download notification message comprises following information: the size of data of the target joint destination address of the storage in CDF, the target program of storage.

Step 703:IG and OITF checks whether oneself state meets downloading request.

Step 704: when the state of IG and OITF meets downloading request, IG downloads response to IPTV controlled entity returned content, sends the downloading request message of HTTP to CDF.

In this step, the downloading request message of HTTP comprises following information: the storage target joint destination address in CDF, the size of data of storage target program.

Step 705:CDF sends the 200OK response of carrying target program to IG.

In this step, the target program of storage is bundled in 200OK response by CDF, and 200OK response is issued to IG.

Step 706:IG sends content to IPTV controlled entity and downloads completion notice message.

Step 707:IPTV controlled entity control IPTV metadata entity amendment information, control IPTV service document entity amendment service document.

In this step, IPTV controlled entity control IPTV metadata entity deletes the target program identification distributing to network side storing content.The step of IPTV controlled entity control IPTV metadata entity amendment information is optional step, in other specific embodiment, also can not perform this step.Local recording state in service document is revised as by IPTV controlled entity control IPTV service document entity: network REC completes, and there is network REC state, be: recorded network REC status modifier in service document.

Step 708:IPTV controlled entity sends content to IG and downloads completion notice response.

In the embodiment of the present invention four, after the equipment of network side completes the recording of target program, when the terminal (comprising OITF and IG) of user side recovers normal condition, IPTV controlled entity is initiated target program and is issued process, the target program be recorded to stored is handed down to the terminal of user side in the CDF of network side.Thus user watches or records other program in terminal generation exception or target Pgmtime, still can get the target program needing to record, therefore improve the success rate of program recording business.

In the invention described above embodiment three and the embodiment of the present invention four, the IPTV system proposed for OITF, is illustrated program recording method of the present invention.Program recording method of the present invention can also be applied in the IPTV system of other framework, such as be applied to ETSI (EuropeanTelecommunicationsStandardsInstitute, be called for short ETSI) IPTV system that proposes, or be applied to IP multimedia system (IPMultimediaSubsystem is called for short IMS).Particularly, can according to the corresponding relation of each functional entity in each functional entity in the system of embody rule or equipment and OITF system or equipment, adopt the functional entity identical with each functional entity in OITF system or equipment function separately or equipment in embody rule system, perform corresponding step in program recording method of the present invention respectively.

For the IPTV system that ETSI proposes, replace the IPTV controlled entity in OITF system with the IPTV service control function entity (ServiceControlFunctions is called for short SCF) in ETSI system, realize the function of IPTV control appliance.Control and transfer function entity (IPTVMediaControlandDeliveryFunctions with the IPTV media in ETSI system, be called for short MCFandMDF) replace in OITF system CC and CDF, realize the function of down sending content control appliance and down sending content equipment.Replace the IPTV service document entity in OITF system with the user file service function entity (UserProfileServerFunction is called for short UPSF) in ETSI system, realize the function of IPTV service document equipment.Correspondingly, other functional entity in OITF system or equipment by functional entity or the equipment replacement performing identical function in ETSI system, can perform corresponding step in program recording method of the present invention.

Below the capital equipment in the program recording system of the embodiment of the present invention is described, comprises IPTV control appliance and down sending content equipment.Particularly, this IPTV control appliance and down sending content equipment can adopt the program recording method of the embodiment of the present invention one, or this IPTV control appliance and down sending content equipment can adopt the program recording method of the embodiment of the present invention two.Wherein, when adopting the program recording method of the embodiment of the present invention one, corresponding IPTV control appliance is introduced in the following embodiment of the present invention five, and corresponding down sending content equipment is introduced in the following embodiment of the present invention six.When adopting the program recording method of the embodiment of the present invention two, corresponding IPTV control appliance is introduced in the following embodiment of the present invention seven, and corresponding down sending content equipment is introduced in the following embodiment of the present invention eight.

Embodiment five

Figure 10 is the structural representation of the IPTV control appliance of the embodiment of the present invention five.As shown in Figure 10, at least comprise in this equipment: detecting unit 1001, receiving element 1002 and transmitting element 1003.

Wherein, whether detecting unit 1001 be in for sense terminals cannot recording state.

The network REC handover request message that receiving element 1002 sends for receiving terminal.

Transmitting element 1003 for detect when detecting unit 1001 terminal be in cannot recording state or receiving element 1002 receive the network REC handover request message that terminal sends time, updating message is sent, to make IPTV service document apparatus modifications service document to IPTV service document equipment.Transmitting element 1003 is also for sending the session initiation protocol request message of channel identication at least comprising caching server address, target program side-play amount, target program identification and target program to down sending content control appliance.This session initiation protocol request message makes down sending content control appliance send the real-time streaming protocol notification message of channel identication at least comprising caching server address, target program side-play amount, target program identification and target program to selected down sending content equipment.This real-time streaming protocol notification message makes down sending content equipment add multicast channel corresponding to the channel identication of target program, obtain and record the multicast media stream of target program, during the moment starting early than down sending content equipment the multicast media stream recording target program when the moment after target program initial time adds target program side-play amount, obtain and record the unicast media stream of target program from target program initial time adds the moment after target program side-play amount from caching server corresponding to caching server address, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with first RTP packet number that down sending content equipment sends to make caching server.

On the basis of technique scheme, further, the transmitting element 1003 of above-mentioned IP TV control appliance is also for before sending updating message to IPTV service document equipment, send network REC notification message to the communication server, send network REC notification message to make the communication server to mobile device.The network REC confirmation that the mobile device that the receiving element 1002 of above-mentioned IP TV control appliance also sends for received communication server returns.

Embodiment six

Figure 11 is the structural representation of the down sending content equipment of the embodiment of the present invention six.As shown in figure 11, this equipment at least comprises: receiving element 1101, first recording elements 1102, second recording elements 1103 and transmitting element 1104.

Wherein, the real-time streaming protocol notification message of channel identication that at least comprise caching server address, target program side-play amount, target program identification and target program of receiving element 1101 for receiving that down sending content control appliance sends.

First recording elements 1102, for multicast channel corresponding to the channel identication that adds target program when receiving element 1101 receives real-time streaming protocol notification message, obtains and records the multicast media stream of target program.

Second recording elements 1103 for start early than the first recording elements 1102 the multicast media stream recording target program when the moment after target program initial time adds target program side-play amount moment when, obtain and record the unicast media stream of target program from target program initial time adds the moment after target program side-play amount from caching server corresponding to caching server address.

Transmitting element 1104, for sending first real time transport protocol RTP packet number of the multicast media stream of the first recording elements 1102 recording to caching server, stops sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with first RTP packet number that down sending content equipment sends to make caching server.

In the embodiment of the present invention five and embodiment six, when the detecting unit of IPTV control appliance detect terminal be in cannot recording state or receive network REC handover request message that terminal sends time, the transmitting element of IPTV control appliance sends session initiation protocol request message to down sending content control appliance.Down sending content control appliance sends real-time streaming protocol notification message to selected down sending content equipment.First recording elements of down sending content equipment adds multicast channel corresponding to the channel identication of target program, obtain and record the multicast media stream of target program, when the moment after described target program initial time adds described target program side-play amount starts to record the moment of the multicast media stream of described target program early than described first recording elements, the second recording elements of down sending content equipment obtains and records the unicast media stream of target program from target program side-play amount from caching server.Therefore, when terminal cannot carry out program recording, can by target performance recording to network side, and the partial target program before recording from caching server obtains down sending content equipment, thus ensure the integrality of target program, to avoid in prior art when there is no miscellaneous equipment in the home network of same user or when the terminal of carrying out recording breaks down, correctly cannot complete the defect of program recording, thus improve the success rate of program recording business.

Embodiment seven

Figure 12 is the structural representation of the IPTV control appliance of the embodiment of the present invention seven.As shown in figure seven, this equipment at least comprises: detecting unit 1201, first receiving element 1202, first transmitting element 1203, second receiving element 1204 and the second transmitting element 1205.

Wherein, whether detecting unit 1201 be in for sense terminals cannot recording state.

The network REC handover request message that first receiving element 1202 sends for receiving terminal.

First transmitting element 1203 for detect when detecting unit 1201 terminal be in cannot recording state or the first receiving element 1202 receive the network REC handover request message that terminal sends time, send network REC notification message to the communication server, send network REC notification message to make the communication server to mobile device.

The network REC confirmation that the mobile device that second receiving element 1204 sends for received communication server returns.

Second transmitting element 1205, for when the second receiving element 1204 receives network REC confirmation, sends updating message, to make IPTV service document apparatus modifications service document to IPTV service document equipment.Second transmitting element 1205 is also for sending the session initiation protocol request message at least comprising the channel identication of target program side-play amount, target program identification and target program to down sending content control appliance.This session initiation protocol request message makes down sending content control appliance send the real-time streaming protocol notification message at least comprising the channel identication of target program side-play amount, target program identification and target program to selected down sending content equipment.This real-time streaming protocol notification message makes down sending content equipment add multicast channel corresponding to the channel identication of target program, obtain and record the multicast media stream of target program, during the moment starting early than down sending content equipment the multicast media stream recording target program when the moment after target program initial time adds target program side-play amount, obtain and record the unicast media stream of target program from target program initial time adds the moment after target program side-play amount from respective cache server, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with first RTP packet number that down sending content equipment sends to make caching server.

Embodiment eight

Figure 13 is the structural representation of the down sending content equipment of the embodiment of the present invention eight.As shown in figure 13, this equipment at least comprises: receiving element 1301, first recording elements 1302, second recording elements 1303 and transmitting element 1304.

Wherein, receiving element 1301 is for receiving the real-time streaming protocol notification message at least comprising the channel identication of target program side-play amount, target program identification and target program of down sending content control appliance transmission.

First recording elements 1302, for multicast channel corresponding to the channel identication that adds target program when receiving element 1301 receives real-time streaming protocol notification message, obtains and records the multicast media stream of target program.

Second recording elements 1303 for start early than the first recording elements 1302 the multicast media stream recording target program when the moment after target program initial time adds target program side-play amount moment when, obtain and record the unicast media stream of target program from target program initial time adds the moment after target program side-play amount from respective cache server.

Transmitting element 1304, for sending first real time transport protocol RTP packet number of the multicast media stream of the first recording elements 1302 recording to caching server, stops sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with first RTP packet number that down sending content equipment sends to make caching server.

In the embodiment of the present invention seven and embodiment eight, when the detecting unit of IPTV control appliance detect terminal be in cannot recording state or receive network REC handover request message that terminal sends time, first transmitting element of IPTV control appliance sends network REC notification message to the communication server, sends described network REC notification message to make the described communication server to mobile device.When the network REC confirmation that the mobile device that the second receiving element receives communication server transmission returns, the second transmitting element sends session initiation protocol request message to down sending content control appliance.Down sending content control appliance sends real-time streaming protocol notification message to selected down sending content equipment.First recording elements of down sending content equipment adds multicast channel corresponding to the channel identication of target program, obtain and record the multicast media stream of target program, when the moment after described target program initial time adds described target program side-play amount starts to record the moment of the multicast media stream of described target program early than described first recording elements, the second recording elements of down sending content equipment obtains and records the unicast media stream of target program from target program side-play amount from caching server.Therefore, when terminal cannot carry out program recording, can by target performance recording to network side, and the partial target program before recording from caching server obtains down sending content equipment, thus ensure the integrality of target program, to avoid in prior art when there is no miscellaneous equipment in the home network of same user or when the terminal of carrying out recording breaks down, correctly cannot complete the defect of program recording, thus improve the success rate of program recording business.

In actual applications, the device such as IG, OITF, IPTV controlled entity in the present invention's each embodiment above-mentioned, IPTV service document entity, CDNC, CC, CDF, MCFandMDF, UPSF or equipment can combine mutually, also can individualism.

It should be noted that: for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action and module might not be that the present invention is necessary.

In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.

Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (12)

1. a program recording method, is characterized in that, comprising:
When internet protocol television IPTV control appliance meets switching condition, updating message is sent to IPTV service document equipment, to make described IPTV service document apparatus modifications service document, described switching condition comprises: detect terminal be in cannot recording state or receive described terminal send network REC handover request message;
Described IPTV control appliance sends to down sending content control appliance and at least comprises caching server address, target program side-play amount, the session initiation protocol request message of the channel identication of target program identification and target program, described session initiation protocol request message makes described down sending content control appliance at least comprise described caching server address to the transmission of selected down sending content equipment, described target program side-play amount, the real-time streaming protocol notification message of the channel identication of described target program identification and described target program, described real-time streaming protocol notification message makes described down sending content equipment add multicast channel corresponding to the channel identication of described target program, obtain and record the multicast media stream of described target program, when the moment after described target program initial time adds described target program side-play amount starts to record the moment of the multicast media stream of described target program early than described down sending content equipment, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from caching server corresponding to described caching server address, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.
2. method according to claim 1, is characterized in that,
Describedly detect that terminal is in and cannot comprise by recording state:
When arriving the initial time of described target program, described IPTV control appliance sends local recording state request message to described terminal, if exceed default return time not receive the response that described terminal returns, described IPTV control appliance determines that described terminal is at the initial time of target program cannot recording state; Or,
During Preset Time after the initial time exceeding described target program, described IPTV control appliance detects the session status of local personal video recorder LPVR corresponding to described target program, when detecting that the session of the LPVR that described target program is corresponding is not set up, described IPTV control appliance determines that described terminal is at the initial time of target program cannot recording state; Or,
Described IPTV control appliance periodically detects the session status of LPVR, and when detecting that terminal departs from network, described IPTV control appliance determines that described terminal is at the initial time of target program cannot recording state;
The described network REC handover request message receiving described terminal and send, comprising:
Described IPTV control appliance receives described terminal and sends network REC handover request message, and described network REC handover request message at least comprises described target program side-play amount, the channel identication of described target program identification and described target program.
3. method according to claim 1 and 2, is characterized in that, described before IPTV service document equipment transmission updating message, also comprises:
Described IPTV control appliance sends network REC notification message to the communication server, sends described network REC notification message to make the described communication server to mobile device;
The network REC confirmation that the described mobile device that described IPTV control appliance receives the transmission of the described communication server returns.
4. a program recording method, is characterized in that, comprising:
The real-time streaming protocol notification message of channel identication at least comprising caching server address, target program side-play amount, target program identification and target program receiving that down sending content control appliance sends;
Add the multicast channel that the channel identication of described target program is corresponding, obtain and record the multicast media stream of described target program;
When the moment after described target program initial time adds described target program side-play amount early than the moment starting the multicast media stream recording described target program, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from caching server corresponding to described caching server address, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.
5. a program recording method, is characterized in that, comprising:
When internet protocol television IPTV control appliance meets switching condition, described IPTV control appliance sends network REC notification message to the communication server, to make the described communication server send described network REC notification message to mobile device, described switching condition comprises: detect terminal be in cannot recording state or receive described terminal send network REC handover request message;
When the network REC confirmation that the described mobile device that described IPTV control appliance receives the transmission of the described communication server returns, described IPTV control appliance sends updating message to IPTV service document equipment, to make described IPTV service document apparatus modifications service document, send to down sending content control appliance and at least comprise target program side-play amount, the session initiation protocol request message of the channel identication of target program identification and target program, described session initiation protocol request message makes described down sending content control appliance at least comprise described target program side-play amount to the transmission of selected down sending content equipment, the real-time streaming protocol notification message of the channel identication of described target program identification and described target program, described real-time streaming protocol notification message makes described down sending content equipment add multicast channel corresponding to the channel identication of described target program, obtain and record the multicast media stream of described target program, when the moment after described target program initial time adds described target program side-play amount starts to record the moment of the multicast media stream of described target program early than described down sending content equipment, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from respective cache server, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.
6. method according to claim 5, is characterized in that,
Describedly detect that terminal is in and cannot comprise by recording state:
When arriving the initial time of described target program, described IPTV control appliance sends local recording state request message to described terminal, if exceed default return time not receive the response that described terminal returns, described IPTV control appliance determines that described terminal is at the initial time of target program cannot recording state; Or,
During Preset Time after the initial time exceeding described target program, described IPTV control appliance detects the session status of local personal video recorder LPVR corresponding to described target program, when detecting that the session of the LPVR that described target program is corresponding is not set up, described IPTV control appliance determines that described terminal is at the initial time of target program cannot recording state; Or,
Described IPTV control appliance periodically detects the session status of LPVR, and when detecting that terminal departs from network, described IPTV control appliance determines that described terminal is at the initial time of target program cannot recording state;
The described network REC handover request message receiving described terminal and send, comprising:
Described IPTV control appliance receives described terminal and sends network REC handover request message, and described network REC handover request message at least comprises described target program side-play amount, the channel identication of described target program identification and described target program.
7. a program recording method, is characterized in that, comprising:
Receive the real-time streaming protocol notification message at least comprising the channel identication of target program side-play amount, target program identification and target program that down sending content control appliance sends;
Add the multicast channel that the channel identication of described target program is corresponding, obtain and record the multicast media stream of described target program;
When the moment after described target program initial time adds described target program side-play amount early than the moment starting the multicast media stream recording described target program, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from respective cache server, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.
8. an internet protocol television IPTV control appliance, is characterized in that, comprising:
Detecting unit, whether be in for sense terminals cannot recording state;
Receiving element, for receiving the network REC handover request message that described terminal sends;
Transmitting element, for detect when described detecting unit described terminal be in cannot recording state or described receiving element receive the network REC handover request message that described terminal sends time, updating message is sent, to make described IPTV service document apparatus modifications service document to IPTV service document equipment; send to down sending content control appliance and at least comprise caching server address, target program side-play amount, the session initiation protocol request message of the channel identication of target program identification and target program, described session initiation protocol request message makes described down sending content control appliance at least comprise described caching server address to the transmission of selected down sending content equipment, described target program side-play amount, the real-time streaming protocol notification message of the channel identication of described target program identification and described target program, described real-time streaming protocol notification message makes described down sending content equipment add multicast channel corresponding to the channel identication of described target program, obtain and record the multicast media stream of described target program, when the moment after described target program initial time adds described target program side-play amount starts to record the moment of the multicast media stream of described target program early than described down sending content equipment, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from caching server corresponding to described caching server address, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.
9. IPTV control appliance according to claim 8, is characterized in that,
Described transmitting element also for before sending updating message to IPTV service document equipment, sends network REC notification message to the communication server, sends described network REC notification message to make the described communication server to mobile device;
The network REC confirmation that the described mobile device that described receiving element also sends for receiving the described communication server returns.
10. a down sending content equipment, is characterized in that, comprising:
Receiving element, for the real-time streaming protocol notification message of channel identication at least comprising caching server address, target program side-play amount, target program identification and target program receiving that down sending content control appliance sends;
First recording elements, the multicast channel that the channel identication for adding described target program when described receiving element receives described real-time streaming protocol notification message is corresponding, obtains and records the multicast media stream of described target program;
Second recording elements, when starting to record the moment of the multicast media stream of described target program early than described first recording elements for the moment after adding described target program side-play amount at target program initial time, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from caching server corresponding to described caching server address;
Transmitting element, for sending first real time transport protocol RTP packet number of the multicast media stream that described first recording elements is recorded to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.
11. 1 kinds of internet protocol television IPTV control appliances, is characterized in that, comprising:
Detecting unit, whether be in for sense terminals cannot recording state;
First receiving element, for receiving the network REC handover request message that described terminal sends;
First transmitting element, for detect when described detecting unit described terminal be in cannot recording state or described first receiving element receive the network REC handover request message that described terminal sends time, send network REC notification message to the communication server, send described network REC notification message to make the described communication server to mobile device;
Second receiving element, the network REC confirmation that the described mobile device sent for receiving the described communication server returns;
Second transmitting element, for when described second receiving element receives described network REC confirmation, sends updating message, to make described IPTV service document apparatus modifications service document to IPTV service document equipment; send to down sending content control appliance and at least comprise target program side-play amount, the session initiation protocol request message of the channel identication of target program identification and target program, described session initiation protocol request message makes described down sending content control appliance at least comprise described target program side-play amount to the transmission of selected down sending content equipment, the real-time streaming protocol notification message of the channel identication of described target program identification and described target program, described real-time streaming protocol notification message makes described down sending content equipment add multicast channel corresponding to the channel identication of described target program, obtain and record the multicast media stream of described target program, when the moment after described target program initial time adds described target program side-play amount starts to record the moment of the multicast media stream of described target program early than described down sending content equipment, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from respective cache server, first real time transport protocol RTP packet number of the multicast media stream recorded is sent to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.
12. 1 kinds of down sending content equipment, is characterized in that, comprising:
Receiving element, for receiving the real-time streaming protocol notification message at least comprising the channel identication of target program side-play amount, target program identification and target program that down sending content control appliance sends;
First recording elements, the multicast channel that the channel identication for adding described target program when described receiving element receives described real-time streaming protocol notification message is corresponding, obtains and records the multicast media stream of described target program;
Second recording elements, when starting to record the moment of the multicast media stream of described target program early than described first recording elements for the moment after adding described target program side-play amount at target program initial time, obtain and record the unicast media stream of described target program from described target program initial time adds the moment after described target program side-play amount from respective cache server;
Transmitting element, for sending first real time transport protocol RTP packet number of the multicast media stream that described first recording elements is recorded to described caching server, stop sending unicast media stream when the sequence number that the RTP of the unicast media stream current transmission being detected wraps is equal with described first RTP packet number that described down sending content equipment sends to make described caching server.
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