CN101374210B - Digital television time-shifting method, system and set-top box - Google Patents
Digital television time-shifting method, system and set-top box Download PDFInfo
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- CN101374210B CN101374210B CN2007100766398A CN200710076639A CN101374210B CN 101374210 B CN101374210 B CN 101374210B CN 2007100766398 A CN2007100766398 A CN 2007100766398A CN 200710076639 A CN200710076639 A CN 200710076639A CN 101374210 B CN101374210 B CN 101374210B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
- H04N7/17318—Direct or substantially direct transmission and handling of requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47208—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting near-video-on-demand content
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47214—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for content reservation or setting reminders; for requesting event notification, e.g. of sport results or stock market
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention relates to a communication technique, and discloses a digital television time shifting method, a system, and a set top box. The method comprises the following steps: receiving a time shifting request of a DTV live channel, searching the time shifting service corresponding to the requested live channel in the corresponding relationship of the DTC live channel and the time shifting service of the channel; and outputting a time shifting code stream of the live channel provided by the time shifting service. Accordingly, the time shifting service can be used when a user receives the DTV. The corresponding relationship comprises at least frequency points of the live channel, a live service identification Service ID, and a time shifting service identification.
Description
Technical field
The present invention relates to the communication technology, particularly the digital television time-shifting technology.
Background technology
Along with the development of multimedia communication especially digital video technology and the demand of society, various video techniques are born thereupon.At present of greatest concern have two big video traffics: developed Digital Television (the Digital Television of maturation comparatively, be called for short " DTV "), the IPTV of Chu Xianing (Internet Protocol Television, be called for short " IPTV ") afterwards.
Traditional DTV provides live broadcast service by original simulated television passage (including spider lines, satellite broadcasting, terrestrial broadcasting), with original analog channel digitlization, for the user provides digitized live telecast channel.In order on original television set, to carry out the DTV business, generally need to increase a set-top box (Set Top Box is called for short " STB "), be sent on the television set again after by STB digital signal being handled.
IPTV mainly provides traditional live telecast channel by IP network for the user, and except traditional live telecast channel, IPTV can also provide interactive services such as video request program (Video on Demand is called for short " VOD "), time shift.Time-shift service is meant and allows the user when watching live telecast, in the certain hour scope, suspends, F.F., fast reverse operation.
Professional live source, interactive service system and the set-top box of passing through as shown in Figure 1 of IPTV realizes above-mentioned functions, this interactive service system comprises following functional module: encoder, business management system (BusinessManage System, abbreviation " BMS "), VOD server, electronic program guides (ElectronicProgram Guide is called for short " EPG ").
Live source enters the VOD server through after the encoder encodes, the VOD server provides external direct broadcast service to each channel, simultaneously code stream is recorded on the server, when the user requires time shift by set-top box, the VOD server will be recorded in the broadcast that the ASCII stream file ASCII on the server is correlated with by the position of time shift, as time-out, rewind down, F.F..
Yet, because IPTV service needed IP network carries the live broadcast service of all channels, investment to IP network requires very high, and at service quality (Quality of Service, be called for short " QoS ") can not get under the situation of fine guarantee, the live quality of channel does not have Digital Television good by the live quality that broadcast channel provides.So,, begin to attempt on DTV, providing time-shift service at present for advantage in conjunction with two kinds of business.
DTV is different with the IPTV maximum, is that DTV still utilizes original live telecast passage that the direct broadcast band business is provided, and is that to utilize IP tunnel to carry out live unlike IPTV.Prior art is directly called the function among the part IPTV in current DTV business, promptly call interactive service system, is implemented in the time shift service is provided on the DTV, as shown in Figure 2.Left-half is a DTV correlation function module among Fig. 2, and right half part is the interactive service system that calls.
Be that the basis provides time shift when service with DTV, provide live broadcast service by DTV tradition head end, interactive service system provides live/time shift/recorded broadcast service, when the user uses time-shift service, need switch to the live of interactive service system earlier, carry out time shift again, this moment, DTV tradition head end and interactive service system were relatively independent.
Yet the present inventor finds that in the aforesaid way, though interactive service system needn't provide the live broadcast service of all channels, can reduce the construction cost of IP network, the user can not be directly switch to time shift from the DTV direct broadcast band, the non-constant of business experience.
Summary of the invention
The technical problem underlying that embodiment of the present invention will solve provides a kind of digital television time-shifting method, system and set-top box, makes can use the time shift service when receiving digital television.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of digital television time-shifting method, may further comprise the steps:
The time shifting request of receiving digital television direct broadcast band;
From the corresponding relation of the time shift service of digital TV direct channel and this channel, search the time shift service corresponding with the direct broadcast band of being asked;
Export the time shift code stream that this direct broadcast band that provides is provided in this time shift by IP tunnel.
Embodiments of the present invention also provide a kind of digital television time-shifting system, comprising:
Memory cell is used to preserve the corresponding relation of the time shift service of digital TV direct channel and this channel; Search the unit, be used for, from the corresponding relation that memory cell is preserved, search the time shift service corresponding with the direct broadcast band of being asked when receiving the time shifting request of digital TV direct channel;
The code stream output unit is used for the time shift code stream that time shift service that should direct broadcast band is provided by IP tunnel output.
Embodiments of the present invention also provide a kind of set-top box, comprising:
Memory cell is used to preserve the corresponding relation of the time shift service of digital TV direct channel and this channel;
Search the unit, be used for, from the corresponding relation that memory cell is preserved, search the time shift service corresponding with the direct broadcast band of being asked when receiving the time shifting request of digital TV direct channel; The code stream receiving element is used to receive the time shift code stream that time shift service that should direct broadcast band is provided by IP tunnel.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are: when receiving the time shifting request of DTV direct broadcast band, from the corresponding relation of the time shift service of digital TV direct channel and this channel, search the time shift service corresponding with the direct broadcast band of being asked, export the time shift code stream that this direct broadcast band that provides is provided in this time shift, thereby make the user when receiving DTV, can use the time shift service.And owing to move in use when serving, need not to carry out the switching of direct broadcast band, make the user can access good business experience.
Description of drawings
Fig. 1 is a system configuration schematic diagram of realizing the IPTV business in the prior art;
Fig. 2 is the schematic diagram that DTV combines with IPTV in the prior art;
Fig. 3 is the element schematic diagram that relates in the digital television time-shifting method according to first embodiment of the invention;
Fig. 4 is the digital television time-shifting method flow chart according to first embodiment of the invention;
Fig. 5 is the digital television time-shifting system construction drawing according to third embodiment of the invention;
Fig. 6 is the set-top box structure chart according to four embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below in conjunction with accompanying drawing.
First embodiment of the invention relates to a kind of digital television time-shifting method, and the element that relates in this method as shown in Figure 3.Among Fig. 3, the element of left-half mainly carries out digital TV direct, and is same as the prior art, and the right half part element is mainly finished the time shift of Digital Television, makes need not can to realize time shift under the situation live from the IP network reception on Digital Television.
Idiographic flow as shown in Figure 4, in step 401, encoder 2 receives the code stream of direct broadcast band from the digital TV direct source, this live source can be the direct broadcast band signal of satellite receiver, DVD or multiplexer output.
In step 402, the live code stream of the 2 pairs of live source of encoder output is encoded, and coding comprises that format conversion, rate conversion, interface are adaptive etc., live signal is transferred to be fit to the VOD server and record form and speed with the STB program request.
In step 403, the live code stream after encoder 2 will be encoded sends to the VOD server by IP tunnel.
In step 404, BMS creates the time shift channel corresponding with direct broadcast band, and the relevant information of this time shift channel of notice VOD server, comprises IP address, port numbers that encoder 2 exports, records information such as duration.
In step 405, the success of time shift channel creation, BMS can send instruction to VOD at any time, requires recording of VOD startup of server time shift channel, promptly creates the time shift service.
In step 406, after the VOD server is received the instruction of BMS, will be recorded to local storage from the code stream that encoder 2 receives.
In step 407, the last foundation of BMS provides the tabulation of the direct broadcast band of time shift service, and the corresponding relation of the sign of the time shift of each direct broadcast band and this channel service, and be as follows.Wherein, direct broadcast band generally can be used frequency, Service ID information descriptions such as (direct broadcast service signs), and the time shift service identifiers generally can be described with URL.
Frequency 1, Service ID1, time shift service identifiers 1
Frequency 2, Service ID2, time shift service identifiers 2
Need to prove, the sub-headend technology has been adopted in current many zones, promptly in this regional DTV tradition head end, build a sub-headend, change the information such as frequency, Service ID of direct broadcast band by this sub-headend, provide live by the Service ID after changing.In the case, also need on the BMS to set up corresponding relation respectively, comprise frequency, Service ID and the time shift service identifiers of the direct broadcast band of corresponding area identification, this zone correspondence in this corresponding relation for these zones, as follows.
Area I D1: frequency 1, Service ID1, time shift service identifiers 1
Area I D1: frequency 2, Service ID2, time shift service identifiers 2
Area I D2: frequency 3, Service ID3, time shift service identifiers 1
Area I D2: frequency 4, Service ID4, time shift service identifiers 2
For example, suppose direct broadcast band 1 corresponding time shift service 1, direct broadcast band 2 corresponding time shift services 2, before the frequency that does not use sub-headend change direct broadcast band, direct broadcast band 1 frequency points corresponding is 100, Service ID is 111; Direct broadcast band 2 frequency points corresponding are 300, and Service ID is 333, and following corresponding relation is unifiedly set up in the zone that changes for the frequency that does not use sub-headend to direct broadcast band then:
100,111, time shift service identifiers 1
300,333, time shift service identifiers 2
Suppose that zone 1 (corresponding region ID1) uses sub-headend that the broadcast frequency of direct broadcast band 1 is changed, change 120 into, Service ID changes 222 into; And changing the broadcast frequency of direct broadcast band 2 into 320, Service ID changes 444 into; Then need to set up independently corresponding relation for this zone 1:
Area I D1:120,222, time shift service identifiers 1
Area I D1:320,444, time shift service identifiers 2
In step 408, the corresponding relation that BMS will provide the direct broadcast band of time shift service to tabulate, reach each direct broadcast band and time shift service identifiers is sent on the EPG.
After the STB start, enter step 409 and step 410.Wherein, step 409 is an optional step.
In step 409, STB receives direct broadcast band by DTV tradition head end, and is same as the prior art, is not described in detail in this.
In step 410, STB provides the direct broadcast band of time shift service to tabulate, reach the corresponding relation of direct broadcast band and corresponding time shift service identifiers to the EPG acquisition request.
In step 411, EPG is according to the correlated identities of the STB that initiates request, and VOD service account during as STB login EPG or the ID of STB search the STB affiliated area, and provide in should the zone time shift service the direct broadcast band tabulation, and corresponding relation be handed down to STB.
In step 412, STB receives from the user's time-shift request.For fear of user's request the direct broadcast band of not supporting the time shift service is carried out time shift, STB can be when the user watches direct broadcast band, the direct broadcast band tabulation that provides time shift to serve is provided according to current direct broadcast band frequency of living in, Service ID, know whether current direct broadcast band provides the time shift service, and can be convenient to the user and correctly use time-shift service to the user prompt relevant information; Perhaps, STB can also be when receiving from the user's time-shift request, searching provides the tabulation of the direct broadcast band of time shift service, know whether current direct broadcast band provides the time shift service, do not support the time shift service if determine current direct broadcast band, then the time shifting request of refusing user's (as display operation invalid etc.) avoids invalidation request that interactive service system is produced burden.
In step 413, user's request is carried out the direct broadcast band of time shift and is supported time shift, promptly in the direct broadcast band tabulation that the time shift service is provided, STB can find the time shift service identifiers of this direct broadcast band according to current direct broadcast band frequency of living in, Service ID in corresponding relation.
In step 414, STB uses the time shift service identifiers to EPG request time shift authorization of service.
In step 415, EPG asks the time shift authorization of service checking of this STB to BMS.
In step 416, after checking is passed through, STB will obtain the media identification that VOD server that this time shift service is provided and this server externally provide the time shift service from EPG.
In step 417, STB uses the media identification of being obtained to serve to the time shift of the VOD of correspondence server requests.
In step 418, the VOD server provides the time shift service to STB, can directly provide time shift code stream by IP network to STB, also can an IP quadrature amplitude modulation (Quadrature Amplitude Modulation be set at interactive service system, be called for short " QAM "), provide time shift code stream from Cable (cable) network to STB by this IP QAM equipment.
In step 419, STB switches to time shift code stream after live code stream is decided frame.For avoiding live in the time shift handoff procedure, take place because of time shift code stream also no show STB cause the situation of blank screen or mosaic, STB still continues to play the I frame of receiving at direct broadcast band before receiving and solve first I frame of time shift code stream.
In step 420,, carry out time-out, rewind down, the F.F. of time-moving television and withdraw from time shift to the indication that STB sends according to the user, wherein F.F. can be by doubly fast F.F., also can be a key redirect to the end.When F.F. forereaches when live to the end, promptly when the time shift code stream of this time shift service output was fast-forward to the up-to-date code stream that this time shift service records, STB can withdraw from the time shift service, switches to direct broadcast band.Perhaps, when the user sends when withdrawing from the indication of time shift to STB, STB also can withdraw from the time shift service, switches to direct broadcast band.
As seen, in the present embodiment, by when receiving the time shifting request of DTV direct broadcast band, from the corresponding relation of the time shift service of DTV direct broadcast band and this channel, search the time shift service corresponding with the direct broadcast band of being asked, export the time shift code stream that this direct broadcast band that provides is provided in this time shift, thereby make the user when receiving DTV, can use the time shift service.And owing to move in use when serving, need not to carry out the switching of direct broadcast band, make the user can access good business experience.
Because present embodiment can merge DTV living broadcast channel and IP exchange channels, live broadcast service and time-shift service is provided jointly, thereby rationally utilizes Internet resources, the reduction system builds whole cost.
Second embodiment of the invention relates to a kind of digital television time-shifting method equally, roughly the same with first execution mode, its difference is, in the first embodiment, on BMS, dispose the corresponding relation of the time shift service of direct broadcast band and this channel, and this corresponding relation is sent to STB, in the present embodiment by IP tunnel, dispose the corresponding relation of the time shift service of direct broadcast band and this channel at DTV tradition head end, and corresponding relation is issued to STB by living broadcast channel.
Need to prove, in first or second execution mode, the corresponding relation that the time shift of DTV direct broadcast band and this channel is served sends to STB, according to the user's time-shift request, searches the time shift service corresponding with the direct broadcast band of being asked by STB from this corresponding relation; And in actual applications, this corresponding relation also can not be handed down to STB, directly be kept in the interactive service system, after STB receives the user's time-shift request, this request is sent to interactive service system, according to the user's time-shift request, from this corresponding relation, search the time shift service corresponding by interactive service system (can be arbitrary element in BMS, EGP in the interactive service system or the VOD server) with the direct broadcast band of being asked.
Third embodiment of the invention relates to a kind of digital television time-shifting system, as shown in Figure 5, comprising: memory cell is used to preserve the corresponding relation of the time shift service of digital TV direct channel and this channel; Search the unit, be used for, from the corresponding relation that memory cell is preserved, search the time shift service corresponding with the direct broadcast band of being asked when receiving the time shifting request of digital TV direct channel; The code stream output unit is used to export the time shift code stream that time shift service that should direct broadcast band is provided.
At least comprise following content in the corresponding relation that this memory cell is preserved: the frequency of direct broadcast band, direct broadcast service sign (Service ID), time shift service identifiers; Search frequency and the Service ID of unit, search the time shift service corresponding with the direct broadcast band of being asked according to the direct broadcast band that comprises in the time shifting request.
If the frequency of digital TV direct channel or Service ID are changed in a zone, then memory cell is preserved independently corresponding relation for this zone, also comprises in this corresponding relation: area identification; Search frequency and the ServiceID of unit, search the time shift service corresponding with the direct broadcast band of being asked according to the zone that sends time shifting request, direct broadcast band that time shifting request comprises.
Above-mentioned each unit can be arranged in the different elements of digital TV network, also can be arranged in subscriber equipment, as memory cell and search BMS, EGP or the arbitrary element of VOD server that the unit can be arranged in digital TV network, also can be arranged in user's STB, do not limit at this.
As seen, in the present embodiment, by when receiving the time shifting request of DTV direct broadcast band, from the corresponding relation of the time shift service of DTV direct broadcast band and this channel, search the time shift service corresponding with the direct broadcast band of being asked, export the time shift code stream that this direct broadcast band that provides is provided in this time shift, thereby make the user when receiving DTV, can use the time shift service.And owing to move in use when serving, need not to carry out the switching of direct broadcast band, make the user can access good business experience.
Four embodiment of the invention relates to a kind of set-top box, as shown in Figure 6, comprising: the corresponding relation receiving element is used for from the corresponding relation of the time shift service of interactive service system receiving digital television direct broadcast band and this channel; Memory cell is used to preserve the corresponding relation of being received; Search the unit, be used for, from the corresponding relation that memory cell is preserved, search the time shift service corresponding with the direct broadcast band of being asked when receiving the time shifting request of digital TV direct channel; Request unit is used for to this time shift service of interactive service system request; The code stream receiving element is used for receiving the time shift code stream that this time shift service provides from interactive service system.By from the corresponding relation of the time shift service of DTV direct broadcast band and this channel, searching the time shift service corresponding with the direct broadcast band of being asked, make set-top box can correctly receive the time shift code stream of this direct broadcast band, thereby make the user when receiving DTV, can normally use the time shift service.And owing to move in use when serving, need not to carry out the switching of direct broadcast band, make the user can access good business experience.
At least comprise following content in the corresponding relation that this memory cell is preserved: the frequency of direct broadcast band, Service ID, time shift service identifiers; Search frequency and the Service ID of unit, search the time shift service corresponding with the direct broadcast band of being asked according to the direct broadcast band that comprises in the time shifting request.
This set-top box can also comprise: the output display unit is used for exporting the direct broadcast band of the permission time shift that shows that corresponding relation comprises; And/or, judging unit, be used for after the time shifting request of receiving the digital TV direct channel, judge and whether comprise the direct broadcast band of being asked in the corresponding relation, if comprised the indication request unit to the time shift service of this direct broadcast band of interactive service system request, and after the mandate of the indication receiving element time shift service of asking, receive the time shift code stream that this time shift service provides obtaining.
In sum, in embodiments of the present invention, when receiving the time shifting request of DTV direct broadcast band, from the corresponding relation of the time shift service of DTV direct broadcast band and this channel, search the time shift service corresponding with the direct broadcast band of being asked, export the time shift code stream that this direct broadcast band that provides is provided in this time shift, thereby make the user when receiving DTV, can use the time shift service.And owing to move in use when serving, need not to carry out the switching of direct broadcast band, make the user can access good business experience.
Because embodiment of the present invention can merge DTV living broadcast channel and IP exchange channels, live broadcast service and time-shift service is provided jointly, thereby rationally utilizes Internet resources, the reduction system builds whole cost.
This corresponding relation comprises at least: the frequency of direct broadcast band, direct broadcast service sign, time shift service identifiers.Frequency by direct broadcast band and direct broadcast service sign can direct broadcast bands of unique identification, and then search corresponding time shift service, and be very convenient, and the amount of information of being preserved is less.
If the DTV in zone tradition head end has sub-headend, promptly the frequency of digital TV direct channel or direct broadcast service are identified at this zone and are changed, and then set up independently corresponding relation for this zone; This corresponding relation also comprises: area identification.Frequency by area identification, direct broadcast band and direct broadcast service sign can direct broadcast bands of unique identification, and then search corresponding time shift service, thereby can satisfy the needs of zones of different better.
Set-top box continue to be play the I frame of direct broadcast band before receiving time shift code stream and decoding first I frame of time shift code stream, occur blank screen or mosaic the time shift process thereby avoid switching to from the DTV direct broadcast band, improved user's business experience.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (15)
1. a digital television time-shifting method is characterized in that, may further comprise the steps:
The time shifting request of receiving digital television direct broadcast band;
From the corresponding relation of the time shift service of digital TV direct channel and this channel, search the time shift service corresponding with the direct broadcast band of being asked;
Export the time shift code stream that this direct broadcast band that provides is provided in this time shift by IP tunnel.
2. digital television time-shifting method according to claim 1 is characterized in that, and is before the described finding step, further comprising the steps of:
Set up the corresponding relation of the time shift service of digital TV direct channel and this channel.
3. digital television time-shifting method according to claim 1 is characterized in that, the corresponding relation of the time shift service of described digital TV direct channel and this channel comprises following content at least:
The frequency of direct broadcast band and direct broadcast service sign and time shift service identifiers.
4. digital television time-shifting method according to claim 3 is characterized in that, comprises the frequency and the direct broadcast service sign of described direct broadcast band in the described time shifting request;
In the described step of searching, search the described time shift service corresponding with the direct broadcast band of being asked according to the frequency and the direct broadcast service sign of described direct broadcast band.
5. digital television time-shifting method according to claim 2, it is characterized in that, if the frequency of digital TV direct channel or direct broadcast service are identified at a zone and are changed, in the step of the corresponding relation that then described time shift of setting up digital TV direct channel and this channel is served, comprise following substep:
Foundation is to the corresponding relation of the time shift service of digital TV direct channel and this channel that should the zone, and this corresponding relation comprises following content at least: the frequency of area identification and direct broadcast band and direct broadcast service identify and the time shift service identifiers.
6. digital television time-shifting method according to claim 5 is characterized in that, comprises the frequency and the direct broadcast service sign of described direct broadcast band in the described time shifting request;
In the described step of searching,, search the described time shift service corresponding with the direct broadcast band of being asked according to the frequency and the direct broadcast service sign of the zone that sends described time shifting request, direct broadcast band that described time shifting request comprises.
7. digital television time-shifting method according to claim 1 is characterized in that, and is after the step of the time shift code stream of this direct broadcast band that this time shift service of described output provides, further comprising the steps of:
Set-top box continued to play the I frame of described direct broadcast band before receiving described time shift code stream and decoding first I frame of described time shift code stream.
8. digital television time-shifting method according to claim 1 is characterized in that, and is further comprising the steps of:
When the time shift code stream of described time shift service output is fast-forward to the up-to-date code stream that this time shift service records, pairing direct broadcast band is switched back in described time shift service.
9. according to each described digital television time-shifting method in the claim 1 to 8, it is characterized in that, further comprising the steps of:
Described corresponding relation is issued to set-top box, shows the direct broadcast band of the permission time shift that comprises in the described corresponding relation by set-top box output; Perhaps
Described corresponding relation is issued to set-top box, and described set-top box if do not comprise the direct broadcast band of being asked in the described corresponding relation, is then refused described time shifting request after the time shifting request of receiving described digital TV direct channel.
10. a digital television time-shifting system is characterized in that, comprising:
Memory cell is used to preserve the corresponding relation of the time shift service of digital TV direct channel and this channel;
Search the unit, be used for, from the corresponding relation that described memory cell is preserved, search the time shift service corresponding with the direct broadcast band of being asked when receiving the time shifting request of digital TV direct channel;
The code stream output unit is used for by the described time shift code stream that time shift service that should direct broadcast band is provided of IP tunnel output.
11. digital television time-shifting according to claim 10 system is characterized in that, comprises following content in the corresponding relation that described memory cell is preserved at least: the frequency of direct broadcast band and direct broadcast service sign and time shift service identifiers;
Described frequency and direct broadcast service sign of searching the unit according to the direct broadcast band that comprises in the described time shifting request searched the described time shift service corresponding with the direct broadcast band of being asked.
12. digital television time-shifting according to claim 11 system, it is characterized in that, if the frequency of digital TV direct channel or direct broadcast service are identified at a zone and are changed, then described memory cell is preserved independently corresponding relation for this zone, also comprises in the independently corresponding relation for this zone preservation: area identification;
Described frequency and direct broadcast service sign of searching the unit according to the zone that sends described time shifting request, direct broadcast band that described time shifting request comprises searched the described time shift service corresponding with the direct broadcast band of being asked.
13. a set-top box is characterized in that, comprising:
Memory cell is used to preserve the corresponding relation of the time shift service of digital TV direct channel and this channel;
Search the unit, be used for, from the corresponding relation that described memory cell is preserved, search the time shift service corresponding with the direct broadcast band of being asked when receiving the time shifting request of digital TV direct channel;
The code stream receiving element is used to receive the described time shift code stream that time shift service that should direct broadcast band is provided by IP tunnel.
14. set-top box according to claim 13 is characterized in that, comprises following content in the corresponding relation that described memory cell is preserved at least: the frequency of direct broadcast band and direct broadcast service sign and time shift service identifiers;
Described frequency and direct broadcast service sign of searching the unit according to the direct broadcast band that comprises in the described time shifting request searched the described time shift service corresponding with the direct broadcast band of being asked.
15. set-top box according to claim 13 is characterized in that, also comprises:
The corresponding relation receiving element is used for receiving described corresponding relation from interactive service system;
The output display unit is used for exporting the direct broadcast band of the permission time shift that shows that described corresponding relation comprises; And/or
Judging unit, be used for after the time shifting request of receiving described digital TV direct channel, judge whether comprise the direct broadcast band of being asked in the described corresponding relation, if comprise then time shift code stream that the time shift service of indicating described receiving element to receive corresponding described direct broadcast band provides.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100766398A CN101374210B (en) | 2007-08-25 | 2007-08-25 | Digital television time-shifting method, system and set-top box |
| PCT/CN2008/070623 WO2009026799A1 (en) | 2007-08-25 | 2008-03-28 | A digital television time-shifting method, system and set-top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100766398A CN101374210B (en) | 2007-08-25 | 2007-08-25 | Digital television time-shifting method, system and set-top box |
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| Publication Number | Publication Date |
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| CN101374210A CN101374210A (en) | 2009-02-25 |
| CN101374210B true CN101374210B (en) | 2011-12-07 |
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| CN2007100766398A Active CN101374210B (en) | 2007-08-25 | 2007-08-25 | Digital television time-shifting method, system and set-top box |
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| Country | Link |
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| CN (1) | CN101374210B (en) |
| WO (1) | WO2009026799A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867772B (en) * | 2009-04-17 | 2013-07-03 | 中兴通讯股份有限公司 | Shared storage method in IPTV system and system |
| CN102355605B (en) * | 2011-11-11 | 2013-06-19 | 烽火通信科技股份有限公司 | Live time-shift processing method of IPTV (Internet Protocol Television) set-top box |
| CN103297848B (en) | 2012-02-22 | 2016-12-14 | 华为终端有限公司 | The player method of Media Stream and Set Top Box |
| CN103986945B (en) | 2014-05-27 | 2018-01-05 | 华为技术有限公司 | A kind of hybrid network system, channel content review method with mixing set top box |
| CN104080000B (en) * | 2014-06-19 | 2017-02-15 | 江苏省邮电规划设计院有限责任公司 | Start-Over media service method in IPTV |
| CN107566882B (en) * | 2017-09-14 | 2020-06-09 | 海信视像科技股份有限公司 | Live television recording method and terminal equipment |
| CN110996113A (en) * | 2019-12-13 | 2020-04-10 | 四川省有线广播电视网络股份有限公司 | Live broadcast channel real-time video navigation method realized through IP channel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801929A (en) * | 2005-12-08 | 2006-07-12 | 复旦大学 | Method for network interaction television system realizing time-shift function |
| CN1968351A (en) * | 2005-11-16 | 2007-05-23 | Lg电子株式会社 | Method of performing time-shift function and television receiver using the same |
| CN1984291A (en) * | 2005-12-12 | 2007-06-20 | Lg电子株式会社 | Method for performing time-shift function and television receiver using the same |
-
2007
- 2007-08-25 CN CN2007100766398A patent/CN101374210B/en active Active
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2008
- 2008-03-28 WO PCT/CN2008/070623 patent/WO2009026799A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1968351A (en) * | 2005-11-16 | 2007-05-23 | Lg电子株式会社 | Method of performing time-shift function and television receiver using the same |
| CN1801929A (en) * | 2005-12-08 | 2006-07-12 | 复旦大学 | Method for network interaction television system realizing time-shift function |
| CN1984291A (en) * | 2005-12-12 | 2007-06-20 | Lg电子株式会社 | Method for performing time-shift function and television receiver using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009026799A1 (en) | 2009-03-05 |
| CN101374210A (en) | 2009-02-25 |
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