CN103945169B - System and method for transmitting satellite service with multiple safe classes - Google Patents

Abstract

The disclosed embodiments be related to it is a kind of for multiple safe classes come the system and method that transmit satellite service.More specifically, a kind of method is provided, including：Determine the safe class that the first set-top box (22a) is supported；The safe class supported using the first set-top box (22a) encodes the first IP groupings comprising satellite service；The first IP groupings of coding are sent to the first set-top box (22a)；The safe class that the second set-top box (22b) is supported is determined, wherein the safe class that the second set-top box (22b) is supported is different from the safe class that the first set-top box (22a) is supported；The safe class supported using the second set-top box (22b) encodes the 2nd IP groupings comprising satellite service；And the 2nd IP groupings of coding are sent to the second set-top box (22b).

Description

System and method for transmitting satellite service with multiple safe classes

The application is that application No. is 200580045845.1 Chinese invention patent applications " for being passed with multiple safe classes The divisional application of the system and method for sending satellite service ".

Technical field

The present invention is related generally to sends video or other numerical datas on network.More particularly it relates to one System of the kind for transmitting satellite service with multiple safe classes.

Background technology

The chapters and sections be intended to reader introduce be described below and/or many aspects of claimed invention it is related respectively The kind prior art.It is believed that the discussion contribute to reader with background's technology in order to more fully understand the present invention multiple sides Face.Thus, it should be understood that read these statements from this angle, without should be as the statement of the prior art.

It is most of it is recognized that the satellite TV system of such as DirecTV is more and more common in the past few years.It is real On border, due to the introducing of DirecTV in 1994, more than 1,200 ten thousand American families start to become satellite TV subscribers.These are ordered Live in the place being relatively easy to install with clutch disk formula satellite tv antenna to most of houses not sharing an entrance with others in family.For example, Satellite dish can be mounted on roof.

However, many potential subscribers live or tent is in multitenant unit (" MDU "), such as hotel or height Floor flat building.Unfortunately, each flat into MDU, which provides satellite TV, can be related to additional challenge. It is unpractical to be provided to each resident family and connect a satellite dish, and/or is extremely expensive. For example, in the high-rise block of flats for possessing 1,000 apartments, in building, roof installs 1,000 satellite dish It is unpractical.Some traditional systems are by being converted to and being transmitted by single coaxial cable digital satellite television signal To the analog signal of multiple resident families, these problems are avoided.However, these systems provide limited channel, with all-digital signal It compares, quality declines, and the satellite TV experience that the user that can not provide house not sharing an entrance with others inhabitation is accustomed to.

A kind of improved system and or method is needed, for providing satellite television to multitenant unit.

Invention content

The some aspects being consistent with initial claimed invention in range are set forth below.It should be understood that these Aspect is only proposed for providing the present invention some form of brief description perhaps used, and these aspects and unawareness to reader It is intended to limit the scope of the invention.In fact, the present invention may include many aspects being not shown below.

The disclosed embodiments are related to the system and method for transmitting satellite service with multiple safe classes.More specifically Ground provides a method, including：Determine the safe class that the first set-top box (22a) is supported；Use the first set-top box The safe class that (22a) is supported encodes the first IP groupings comprising satellite service；First IP of coding is grouped hair It is sent to the first set-top box (22a)；The safe class that the second set-top box (22b) is supported is determined, wherein the second set-top box (22b) institute The safe class of support is different from the safe class that the first set-top box (22a) is supported；It is supported using the second set-top box (22b) Safe class to comprising satellite service the 2nd IP grouping encode；And the 2nd IP groupings of coding are sent to second Set-top box (22b).

Description of the drawings

When detailed description below is read in conjunction with the figure, advantages of the present invention will become obvious, in attached drawing：

Fig. 1 is the block diagram of exemplary satellite television over P system according to an embodiment of the invention；

Fig. 2 is another embodiment of exemplary satellite television over P system shown in FIG. 1；And

Fig. 3 is the block diagram of the exemplary satellite gateway of the present invention.

Specific implementation mode

One or more specific embodiments of the present invention are described below.In order to provide the brief description of these embodiments, All features of actual implementation mode are not described in the description.It should be appreciated that such as one in arbitrary engineering or design object Sample, in the exploitation of any actual implementation mode, it is necessary to the specific decision of multiple embodiments is made, to realize that developer's is specific Purpose, for example, with system in relation to and the related limitation of business compatibility, and this is different different embodiments.This Outside, it should be appreciated that this exploitation may is that complicated and takes, but for benefiting from the those of ordinary skill of the disclosure and The regular works that speech is design, makes and manufactures.

Fig. 1 is turned to, reference numeral 10 is indicated generally and shows the exemplary satellite IP electricity according to one embodiment The block diagram of viewing system.As shown, in one embodiment, system 10 may include one or more satellite days Head end (head-end) unit, IP distribution networks (the IP distribution of line 12a to 12m, such as satellite gateway 14 Network) 20 and one or more set-top box (" STB ") 22a to 22n.However, those skilled in the art can recognize Know, the embodiment of system 10 shown in FIG. 1 is only a possible embodiment of system 10.Similarly, in alternative embodiment In, shown component that is reconfigurable or omitting system 10, or add-on assemble can be added to system 10.For example, small Modification in the case of, system 10 can be configured to distributed non-satellite video and audio service.

Satellite dish 12a-12m can be configured to receive video, audio or be sent from earth-circling satellite Other categorical datas with TV related.It is described below, in one embodiment, satellite dish 12a- 12m is configured to receive the DirecTV worked out on the KU wave bands from 10.7 to 12.75 Gigahertzs (" GHz ").However, In alternative embodiment, satellite dish 12a-12m is configurable to receive other types of direct broadcast satellite (" DBS ") Or TVRO television receive-only (" TVRO ") signal, such as Dish network signals, ExpressVu signals, StarChoice signals etc..At it It is not based in the system of satellite, and satellite dish 12a-12m can be omitted in system 10.

In one embodiment, the low noise block converter in satellite dish 12a-12m (" LNC ") from around Ground satellite reception input signal, and these input signals are converted to the frequency of the L-band of 950 and 2150 megahertzs (" MHz ") Rate.It will be further described with reference to Fig. 2, each in satellite 12a-12m is configurable to receive in specific frequency One or more input satellite TV signals (being known as transponder (transponder)) of particular polarization are gone up and had, and are used In these satellite-signals are converted to L-band signal, each L-band signal may include multiple video or audio signals.

Satellite dish 12a-12m is configurable to L-band signal being sent to head-end unit or gateway clothes Business device, such as satellite gateway 14.In optional non-satellite embodiments, head-end unit can be wired television receiver, high definition Clear television receiver or other video distribution systems.

Satellite gateway 14 includes satellite tuner, demodulation demultiplexing module 16 and IP wrappers (wrapper) module 18.Module 16 may include multiple tuners, demodulator and demultiplexer, by sent from satellite 12a-12m modulated and The L-band signal of multiplexing is converted to multiple single programs transport streams (" SPTS "), each SPTS is loaded with service (such as TV Channel video, television channel audio, program guide etc.).In one embodiment, module 16 is configured to be directed to satellite dish All services that television antenna 12a-12m is received generate single programs transport stream.However, in an alternative embodiment, module 16 Transport stream can be generated only for the subset for the service that satellite dish 12a-12m is received.

SPTS can be sent to IP wrapper modules 18 by satellite tuner, demodulation demultiplexing module 16.In one embodiment In, the data in SPTS are grouped into the multiple internets for being suitble to be transmitted in IP distribution networks 20 by IP wrapper modules 18 again Agreement (" IP ") is grouped.For example, the DirectTV protocol packets in SPTS can be converted to IP groupings by IP wrapper modules 18. In addition, IP wrappers 18 are configurable to receive server request from STB22a-22n, and by IP SPTS multicasts (that is, passing through IP Broadcasted to one or more STB22a-22n address) arrive these STB22a-22n for asking special services.

In an alternative embodiment, IP wrapper modules 18 can also configure unsolicited for one of multicast STB 22a-22n The IP agreement SPTS of service.It should be noted that module 16 and 18 is only an exemplary embodiment of satellite gateway 14.Can It selects in embodiment, such as with reference to Fig. 2 and 3 the embodiment described, the function of module 16 and 18 can be at a variety of appropriate groups It redistributes or combines in part or module.

IP distribution networks 20 may include one or more routers, switch, modem, splitter or bridge.For example, In one embodiment, satellite gateway 14 can be connected with main-frame (distribution frame, " MDF "), MDF and centre Distributing frame (" IDF ") be connected, IDF is connected with the coaxial cable of Ethernet bridge, and Ethernet bridge is connected with router, router and One or more of STB22a-22n is connected.In another embodiment, IP distribution networks 20 can be connect with Digital Subscriber Line Enter the MDF that multiplexer (" DSLAM ") is connected, DSLAM is connected with DSL modem, DSL modem and router phase Even.In another embodiment, IP distribution networks may include wireless network, such as 802.11 or WiMax networks.In this implementation In example, STB22a-22n may include the wireless receiver for being configured to receive multicast IP groupings.Those of ordinary skill in the art can It recognizes, above-described embodiment is only exemplary.Equally, in an alternative embodiment, it is a large amount of appropriate to use in system 10 The IP distribution networks of form.

IP distribution networks 20 can be connected with one or more STB22a-22n.STB22a-22n can be arbitrary appropriate Video, audio or the other data receivers of the IP groupings that such as IP SPTS can be received in IP distribution networks 20 of type Machine.It will recognize, term set-top box (" STB ") used herein not only may include the equipment being located on television set.But STB 22a-22n can be the video or audio of the arbitrary appropriate form in television set, display or computer-internal or outside Receiver is described herein to can be configured to regarding for including but not limited to video component, computer, radio telephone or other forms Frequency logger.In one embodiment, STB22a-22n can be configured to ethernet port (in other inputs) To receive the DirectTV receivers of the service such as video and/or audio.In an alternative embodiment, STB22a-22n can be with It designs and/or is configured to receive coaxial cable, twisted-pair feeder, the multicast transmission on copper wire, or via such as IEEE802.11 The wireless transmission of the wireless standards such as standard.

As described above, system 10 can receive video, audio and/or the other data that satellite is sent in space, and handle/ The data are converted to distribute in IP distribution networks 20.Therefore, Fig. 2 is the exemplary satellite IP electricity according to one embodiment Another embodiment of viewing system 10.Fig. 2 shows three exemplary satellite dish 12a-12c.Each circle Satellite television antenna 12a-12c is configurable to receive the signal around ground satellite from one or more.This field it is general Logical technical staff can be appreciated that, is usually referred to satellite with the track groove (orbital slot) where satellite and is sent out from satellite The signal sent.For example, in fig. 2, satellite dish 12a is configured to receive from positioned at 101 degree of track grooves DirecTV satellites signal.Similarly, satellite dish 12b is received from the signal positioned at 119 degree of satellites, Satellite dish 12c receives the signal of the satellite from the track groove positioned at 110 degree.It will recognize, optional In embodiment, satellite dish 12a-12c can receive from multiple track grooves positioned at such as 95 degree track grooves The signal of a number of other satellites.In addition, satellite dish 12a-12c can also be configured to receive polarized satellite Signal.For example, in fig. 2, satellite dish 12a is configured to receive left polarization (being illustrated as " 101L ") With the signal of right polarization (being shown as " 10iR ").

As above in conjunction with Figure 1, satellite dish 12a-12c can receive the satellite-signal of KU wave bands, And convert these signals into the L-band signal of satellite gateway 14 to be sent to.However, in some embodiments, can reach Before satellite gateway 14, by L-band signal caused by satellite dish 12a-12c merge into less signal or It is split into more signals.For example, as shown in Fig. 2, satellite dish 12b and 12c can will be come from by switch 24 L-band signal merge into single L-band signal, which includes defending from 110 degree of satellite and 119 degree The L-band signal of star.

As shown, system 10 may also include multiple 1: 2 splitter 26a, 26b, 26c and 26d, for will be defended from disc type The L-band signal that star television antenna 12a-12c is sent is divided into two L-band signals, and each L-band signal includes before dividing L-band signal service half.In an alternative embodiment, 1: 2 splitter 26a-26b can be omitted or integrated into satellite gateway In 14a and 14b.

The L-band signal newly divided can be sent to satellite gateway 14a and 14b from 1: 2 splitter 26a-26d.Fig. 2 institutes The embodiment for the system 10 shown includes two satellite gateways 14a and 14b.However, in an alternative embodiment, system 10 may include appointing It anticipates an appropriate number of satellite gateway 14.For example, in one embodiment, system may include three satellite gateways 14.

Satellite gateway 14a and 14b can also further segment L-band signal, then be tuned to one in L band signals Or multiple services, with generate can be grouped into again IP grouping and in IP distribution networks 20 multicast one or more SPTS.This Outside, one or more satellite gateway 14a, 14b can also be connected with Public Switched Telephone Network (" PSTN ") 28.Due to satellite gateway 14a, b are connected with PSTN28, so STB22a-22n can be by IP distribution networks 20 and satellite gateway 14a, b, with satellite service Provider is communicated.The function advantageously eliminates the need for each independent STB22a-22n is directly connected with PSTN28 It wants.

IP distribution networks 20 can also be connected with Internet Service Provider (" ISP ") 30.In one embodiment, IP distributes Other equipment (not shown) appropriate that network 20 is used to STB22a-22n and/or is connected with IP distribution networks 20 provide Internet service, such as high-speed data access.

As described above, satellite gateway 14a, b may be configured to receive multiple L-band signals, to generate multiple SPTS, and The requested SPTS of multicast in IP distribution networks 20.The frame of exemplary satellite gateway 14 is shown referring now to Fig. 3, Fig. 3 Figure.As shown, satellite gateway 14a, b include 40, two front end 41a and 41b of power supply and rear end 52.Power supply 40 can be Any one in multiple industrial standard AC or DC power supplies is configurable to front end 41a, b and rear end 52 is made to be able to carry out following The function.

Satellite gateway 14a, b may also include two front ends 41a, b.In one embodiment, each front end 41a, b It is configured to receive two L-band signals input from 1: 2 splitter 26a-26d described in reference diagram 2.For example, front end 41a can receive two L-band signals from 1: 2 splitter 26a, and front end 41b can receive two L from 1: 2 splitter 26b Band signal.In one embodiment, each L-band of input front end 41a, b includes eight or less service.

Then front end 41a, b can be used 1: 4L band splitters 42a, 42b, 42c and 42d defeated further to segment L-band Enter.Once subdivision, then L-band signal can by enter dual tuner links four group (bank) 44a, 44b, 44c and 44d.In group 44a-44d each dual tuner links be configurable to be tuned to the L that is received by individual dual tuner links Two services in band signal, to generate SPTS.Then SPTS can be sent to low-voltage differential letter by each dual tuner links One of number (" LVDS ") driver 48a, 48b, 48c and 48d.Lvds driver 48a-48d is configurable to amplification L-band and passes Defeated signal is to be sent to rear end 52.In an alternative embodiment, instead of lvds driver 48a-48d, various forms of differences can be used Divide driver and/or amplifier.Other embodiments, which can be used, serializes all transmission signals, to be routed to rear end 52 together.

As shown, front end 41a, b may also include microprocessor 46a and 46b.In one embodiment, microprocessor 46a, 46b be controllable and/or relay commands to dual tuner links group 44a-44d and 1: 4L band splitters 42a-42d.It is micro- Processor 46a, b may include the ST10 microprocessors using the production of ST microelectric techniques.Microprocessor 46a, b can connect with LVDS Receipts machine is connected with sender module 50a with 50b.LVDS receivers/sender module 50a, b can facilitate microprocessor 46a, b with The communication between component on rear end 52, as described below.

Turning next to rear end 52, rear end 52 includes LVDS receivers 54a, 54b, 54c and 54d, LVDS receivers 54a, 54b, 54c and 54d are configured to receive the transmission signal transmitted by lvds driver 48a-48d.Rear end 52 further includes that LVDS connects Receipts machine/sender module 56a and 56b, LVDS receivers/sender module 56a and 56b are configured to and LVDS receivers/hair Machine module 50a, b is sent to be communicated.

As shown, LVDS receiver 54a-54d and LVDS receiver/transmitter 56a, b are configured to and transmission process Device 58a and 58b are communicated.In one embodiment, transmission processor 58a, b be configured to receive in front end 41a, b by SPTS caused by dual tuner links.For example, in one embodiment, transmission processor 58a, 58b are configurable to generate 16 SPTS.Transmission processor 58a, b be configurable to SPTS being grouped into again can in IP distribution networks 20 multicast IP Grouping.For example, DirecTV protocol packets can be grouped into IP agreement grouping again by transmission processor 58a, b, then in IP address On these IP are multicast into one or more STB22a-22n.

Transmission processor 58a, b can also interconnect the bus 62 of (" PCI ") bus with such as 32,66Mz peripheral assemblies It is connected.By bus 62, transmission processor 58a, b can be with network processing unit 70, Ethernet interface 68 and/or expansion slot 66 It is communicated.Network processing unit 70 is configurable to receive the request for service from STB22a-22n, and orders transmission The requested service of processor 58a, b multicast.In one embodiment, network processing unit is the IXP425 networks of intel productions Processor.Although being not shown, network processing unit 70 can also be configured to for status data to be sent to the face of satellite gateway 14a, b Plate (front panel), or support the debugging to satellite gateway 14a, b or monitoring by debugging port.

As shown, transmission processor 58a, b can also be connected via bus 62 with Ethernet interface 68.Implement at one In example, Ethernet interface 68 is to provide the gigabit ethernet interface of copper wire or optical fiber interface towards IP distribution networks 20.This Outside, bus 62 can also be connected with the expansion slot of such as pci expansion slot, so as to upgrade or extend satellite gateway 14a, b.

Transmission processor 58a, b can also be connected with contour (host bus) 64.In one embodiment, contour 64 is will to pass Transmission processor 58a, b are connected to 16 bit data bus of modem 72, and wherein modem 72 is configurable to lead to PSTN28 as described above is crossed to be communicated.In an alternative embodiment, modem 72 can also be connected with bus 62.

As described above, satellite gateway 14 can pass through IP distribution networks 20 is sent to STB22a-22n by IP groupings.At one In embodiment, satellite gateway 14 is configured to the ability according to each in STB22a-22n, uses two or more safety etc. Grade (such as encryption), to send IP groupings.More specifically, satellite gateway 14 can be configured to specific STB safety supported etc. Grade is by multicast satellite services to each in STB22a-22n.For example, if be operated in relatively low safe class STB (i.e. compared with Weak encryption) request particular satellite service (such as CNN), then satellite gateway 14 can be sharp in the encrypted multicast of relatively low safe class It is grouped with IP and generates CNN multicasts.Meanwhile if be operated in STB22a-22n compared with high safety grade another is (i.e. relatively strong Encryption) it also asks to receive CNN, then higher safe class can be used to generate another CNN multicast in satellite gateway 14.At one In embodiment, satellite gateway 14 can be configured to generate three different safety class：Network encryption, network encryption are advanced plus part Encryption standard (" AES ") and network encryption add complete AES encryption (128 bit key encryption).However, in optional implementation In example, optional encryption technology or safety approach can also be used.

As described above, satellite gateway 14 can be configured to the security capabilities supported based on each in STB22a-22n, Different multicasts is generated to STB22a-22n.In one embodiment, satellite gateway 14 is configured in specific STB and satellite gateway 14 be connected (via IP distribution networks 20) when, ask each security capabilities for being supported in STB22a-22n.In the embodiment In, satellite gateway 14 can store the security capabilities of each in STB22a-22n, and in one of STB22a-22n to satellite gateway When 14 request satellite service, the security capabilities of these storages is accessed.In another embodiment, satellite gateway 14 can be in STB22a- A specific STB asks to check the hardware and/or software feature of the specific STB when satellite service to satellite gateway 14 in 22n. In another embodiment, satellite gateway 14 can be configured to inquire its security capabilities to the STB 22a-22n for sending out request.

Can a variety of modifications easily be carried out to the present invention and use plurality of optional form, while attached drawing is passed the imperial examinations at the provincial level and is illustrated Specific embodiment, and be described in detail herein.It should be appreciated, however, that the present invention be not intended to be limited to it is disclosed Particular form.But present invention covering all repairing of falling into the spirit and scope of the invention being defined by the following claims Change, equivalent and optional object.

Claims (18)

1. a kind of method, including：

In response to the request from equipment, the first safe class that the equipment is supported is determined；

The first safe class supported using the identified equipment will be encoded from satellite service provider's received signal Be grouped at the first IP, wherein first IP groupings comprising it is from the satellite service provider, used identified the The first safe class that one equipment is supported is come the data that encode, and wherein executes volume after determining the first safe class Code, and with other data are received from the satellite service provider, the coding continues；

The first IP groupings of coding are sent at least the first equipment；

In response to the request from the second equipment, the second safe class that the second equipment is supported is determined；

In response to determining that the second safe class that the second equipment is supported is different from the first safe class that the first equipment is supported, The second safe class supported using identified second equipment will be encoded from the satellite service provider received signal Be grouped at the 2nd IP, wherein second IP groupings comprising it is from the satellite service provider, used identified the The second safe class that two equipment are supported is come the data that encode, and wherein in the second safety for determining that the second equipment is supported Coding is executed after grade, and with other data are received from the satellite service provider, the coding continues；And

While the first equipment continues to the first IP groupings of coding, the 2nd IP groupings of coding are sent at least second Equipment；

To be wherein encoded into from the satellite service provider received signal the first IP grouping the step of and will be from the satellite Service provider received signal is encoded into identical data of the step of the 2nd IP groupings using same satellite service, and

Wherein the first IP groupings are formed to the multicast received by multiple first equipment with the first safe class, Yi Ji Two IP groupings are formed to the multicast received by multiple second equipment with the second safe class.

2. according to the method described in claim 1, wherein it is determined that the safe class that the second equipment is supported includes：Determine second Equipment supports network encryption.

3. according to the method described in claim 2, wherein it is determined that the safe class that the second equipment is supported includes：Determine second 128 bit encryption of equipment support section.

4. according to the method described in claim 2, wherein it is determined that the safe class that the first equipment is supported includes：Determine first Equipment supports complete 128 bit encryption.

5. according to the method described in claim 1, wherein, safe class of the safe class that the first equipment has than the second equipment It is low.

6. according to the method described in claim 1, wherein, the first equipment is set-top box.

7. according to the method described in claim 6, wherein, the second equipment be video display apparatus, video recorder, computer and At least one of telephone plant.

8. according to the method described in claim 1, wherein, coding the first IP groupings include：To comprising from digital satellite services IP block encodings.

9. a kind of equipment, including：

First processing module determines the first safe class that the equipment is supported, and ring in response to the request from equipment Requests of the Ying Yu from the second equipment determines the second safe class that the second equipment is supported；

Second processing module, is coupled to first processing module, and Second processing module is supported using the identified equipment First safe class will be encoded into the first IP groupings from satellite service provider's received signal, wherein first IP is grouped Including from the satellite service provider, the first safe class for having been supported using identified first equipment encoded Data, and coding is wherein executed after determining the first safe class, and connect with from the satellite service provider Other data are received, the coding continues；Second processing module is additionally in response to determine the second safety etc. that the second equipment is supported Grade is different from the first safe class that the first equipment is supported, the second safety etc. supported using identified second equipment Grade will be encoded into the 2nd IP groupings from the satellite service provider received signal, wherein second IP groupings are comprising next From the satellite service provider, the second safe class for having been supported using identified second equipment the number that encodes According to and wherein executing coding after determining the second safe class that the second equipment is supported, and with from the satellite Service provider receives other data, and the coding continues；And

Network interface, is coupled to first processing module and Second processing module, and the network interface is sent at least the first equipment The first IP groupings of coding, and while the first equipment continues to the first IP groupings of coding, sent to the second equipment The 2nd IP groupings of coding；

Wherein from the satellite service provider, the first safe class for being supported using identified first equipment come The data of coding with from the identical satellite service provider, supported using identified second equipment second Safe class is identical come the data encoded；And

Wherein the first IP groupings are formed to the multicast received by multiple first equipment with the first safe class, Yi Ji Two IP groupings are formed to the multicast received by multiple second equipment with the second safe class.

10. equipment according to claim 9, wherein the first processing module determines whether the second equipment supports network Encryption.

11. equipment according to claim 9, wherein the first processing module determine the second equipment whether support section 128 bit encryptions.

12. equipment according to claim 9, wherein the first processing module determines whether the first set-top box has been supported Complete 128 bit encryption.

13. equipment according to claim 9, wherein the first processing module is network processing unit, the second processing Module is transmission processor.

14. equipment according to claim 9, wherein safety etc. of the safe class that the first equipment has than the second equipment Grade is low.

15. equipment according to claim 9, wherein the first equipment is set-top box.

16. equipment according to claim 15, wherein the second equipment is video display apparatus, video recorder, computer At least one of with telephone plant.

17. equipment according to claim 13, wherein transmission processor is compiled using the data from digital satellite services Code the first IP groupings.

18. a kind of equipment, including：

For in response to the request from equipment, determining the device for the first safe class that the equipment is supported；

The first safe class for using the identified equipment to be supported, will be from satellite service provider's received signal It is encoded into the device of the first IP groupings, wherein first IP groupings include from the satellite service provider, used The first safe class that identified first equipment is supported the data that encode, and wherein determine the first safe class it Coding is executed afterwards, and with other data are received from the satellite service provider, the coding continues；

The first IP groupings for that will encode are sent to the device of at least the first equipment；

For in response to the request from the second equipment, determining the device for the second safe class that the second equipment is supported；

The first safe class for being supported with the first equipment in response to determining the second safe class that the second equipment is supported Difference, the second safe class supported using identified second equipment, the letter that will be received from the satellite service provider Number be encoded into the device of the 2nd IP groupings, wherein second IP groupings comprising it is from the satellite service provider, made The second safe class supported with identified second equipment is come the data that encode, and is wherein determining that the second equipment is propped up Execute coding after the second safe class held, and with receiving other data from the satellite service provider, it is described Coding continues；And

While the first IP for continuing to coding in the first equipment is grouped, the 2nd IP groupings of coding are sent at least The device of second equipment；

Wherein from the satellite service provider, the first safe class for being supported using identified first equipment come The data of coding with from the identical satellite service provider, supported using identified second equipment second Safe class is identical come the data encoded；And

Wherein the first IP groupings are formed to the multicast received by multiple first equipment with the first safe class, Yi Ji Two IP groupings are formed to the multicast received by multiple second equipment with the second safe class.