CN103236880B - A kind of satellite digital publishing system and method - Google Patents
A kind of satellite digital publishing system and method Download PDFInfo
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- CN103236880B CN103236880B CN201310134400.7A CN201310134400A CN103236880B CN 103236880 B CN103236880 B CN 103236880B CN 201310134400 A CN201310134400 A CN 201310134400A CN 103236880 B CN103236880 B CN 103236880B
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- satellite
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Abstract
The invention discloses a kind of satellite digital publishing system and method, for digital media data is sent to user terminal from satellite headend.Described satellite digital publishing system includes: satellite headend, is used for launching modulated digital media data；At least one LAN, each LAN at least one LAN described includes: the node server being connected by satellite link with described satellite headend；Described node server includes the satellite earth antenna for receiving described modulated digital media data, described modulated digital media data is carried out the data processing unit of data process, and stores the memorizer of the described digital media data processed through data；At least one user terminal, it is connected with described node server by described LAN, directly to obtain the digital media data processed through data from described node server.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of satellite digital publishing system and method.
Background technology
Existing satellite digital publishing system such as Fig. 1 utilizing satellite to carry out transmitting digital media data
Shown in, including the satellite headend 10 for launching digital media data, and at least one is used
In the user terminal of the described digital media data of reception, as Fig. 1 schematically illustrates two
User terminal 30 and 40.By satellite chain between satellite headend 10 and user terminal 30 and 40
Road 20 is connected, and such satellite headend 10 just can be by digital media data real time propelling movement to each
Individual user terminal.Utilize the feature that satellite system overlay area is wide, communication mode is many, it is possible to
Realize transmitting data at a distance, on a large scale, and not by time place and meteorological condition
Limit, be therefore with a wide range of applications.But owing to satellite repeater lease cost is higher,
When causing using satellite to push substantial amounts of digital media data, cost also can raise accordingly.
Meanwhile, satellite headend needs process such as armed digital media data are modulated
Rear just can send, thus need, the hardware such as corresponding demodulator are set on the subscriber terminal and sets
It is standby so that user's use just can be supplied to after the digital media data received is processed.This is just
The manufacturing cost that can cause user terminal also can raise.
In sum, utilize satellite to transmit substantial amounts of digital media data, high one-tenth will be faced
This problem.
Summary of the invention
The present invention provides a kind of satellite digital publishing system and method, for by digital media data
It is sent to user terminal, to solve the one-tenth utilizing satellite communication to carry out data transmission from satellite headend
This too high problem.
Described satellite digital publishing system includes:
Satellite headend, is used for launching modulated digital media data；
At least one LAN, each LAN bag at least one LAN described
Include:
The node server being connected by satellite link with described satellite headend；Described node
Server includes the satellite earth antenna for receiving described modulated digital media data, right
Described modulated digital media data carries out the data processing unit of data process, and storage institute
State the memorizer of the digital media data processed through data；
At least one user terminal, it is connected with described node server by described LAN
Connect, directly to obtain the described digital media data processed through data from described node server.
Wherein, described LAN can be Ethernet.
Preferably, described satellite headend is arranged in satellite idle periods and sends described Digital Media number
According to.
Specifically, the described digital media data processed through data is pushed by described node server
To described user terminal.Or, described user terminal actively access described node server and under
Carry the described digital media data processed through data.
Specifically, described data processing unit at least includes: modem, in order to described
Digital media data is demodulated.Further, it is also possible to include following in one or many
Individual:
High-frequency/low-frequency signal adapter, in order to change described digital media data from high-frequency signal
For low frequency signal；
Analog/digital signal conversion device, in order to change described digital media data from analogue signal
For digital signal；
Demultiplexer, in order to demultiplex described digital media data；With
PID filter, in order to carry out PID filtration to described digital media data.
Described satellite digital distributing method, including:
The digital media data after modulation is sent via satellite link by satellite headend；
Described digital media data is received by the node server in LAN, and to described number
Word media data stores after carrying out data process；
At least one user terminal being connected by described LAN with described node server
Directly obtain the described digital media data processed through data from described node server.Wherein,
Described LAN is specifically as follows Ethernet.
Specifically, the described digital media data processed through data is pushed by described node server
To described user terminal.Or, described user terminal actively access described node server and under
Carry the described digital media data processed through data.
Specifically, described data process and at least include entering described modulated digital media data
Row demodulation process.Further, it is also possible to include following in one or more: high frequency/low
Frequently at signal conversion processes, analog/digital signal conversion process, demultiplexing process and PID filtration
Reason.
Utilize satellite digital publishing system and method that the present invention provides, can be at node server
End receives digital media data and carries out storing after necessary data process, and such user is eventually
After end directly can be connected to obtain described process with described node server by LAN
Digital media data, and without arranging satellite earth antenna on each user terminal and carrying out
The necessaries that described data process such that it is able to reduce user terminal cost.It addition, it is each
Node server can connect multiple user terminal, compared to from satellite headend directly by pending
The digital media data of row is transferred to each user terminal, and from satellite headend by described numeral matchmaker
Volume data is transferred to node server, it is possible to reduce the data volume utilizing satellite link to transmit, from
And reach cost-effective purpose.Further, due to can be at node server end by institute
State digital media data to store, so from satellite headend, described digital media data is transmitted
To the time of node server, the time obtaining described digital media data with user terminal just may be used
With asynchronous, the time utilizing the satellite link described digital media data of transmission is upper the most unrestricted,
Such that it is able to utilize the free time of satellite link to transmit data, saving further becomes
This.
Accompanying drawing explanation
Fig. 1 show the structural representation of existing satellite digital publishing system；
Fig. 2 show the structural representation of the satellite digital publishing system that one embodiment of the invention provides
Figure；
Fig. 3 show the node server structural representation shown in Fig. 2；
Fig. 4 show the flow process of the satellite digital distributing method that another embodiment of the present invention provides and shows
It is intended to.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment describes the present invention.
The present invention provides a kind of satellite digital publishing system, by digital media data from satellite headend
It is transferred to node server by satellite link carry out data process and preserve, such user terminal
Directly can obtain data by LAN from node server.Direct compared to each user terminal
Obtained for data from satellite headend by satellite link, decrease and transmitted by satellite link
Data volume such that it is able to cost-effective.
As a preferred embodiment of the present invention, satellite digital publishing system as shown in Figure 2
In, modulated digital media data is launched by satellite headend 100, passes through satellite link
200 are transmitted at least one LAN.Exemplary in Fig. 2 show two LANs 501
With 502.Node server 201 and four use being exemplarily illustrated are included in LAN 501
Family terminal 301～304.Similarly, include node server 202 in LAN 502 and show
Four user terminals 305～308 illustrated to example.It is appreciated that in the distribution of this satellite digital and is
System can also include more or less of LAN, can also include more in each LAN
Many or less user terminal.
Each node server 201 and 202 can as shown in Figure 3, including for receiving
State the satellite earth antenna 401 of modulated digital media data, to described modulated numeral matchmaker
Volume data carries out the data processing unit 402 of data process, and stores the described number processed through data
The memorizer 403 of word media data.Each user terminal all can by the LAN at its place with
Described node server in this LAN is connected to obtain the described digital matchmaker processed through data
Volume data.Wherein, described digital media data can be music, books, newpapers and periodicals, magazine,
Courseware or game.Described digital media data be described user terminal obtain after can directly by
Described digital media data is shown to the data of user.
Specifically, described digital media data multicast can be pushed to respectively by described node server
Individual user terminal.Certainly, user terminal can also be by actively accessing described node server
Obtain described digital media data.
Due to described digital media data and non-immediate be pushed to user terminal by satellite headend, and
Being to be received by node server and preserve, such satellite headend transmits described Digital Media number
According to time, from described user terminal obtain described digital media data time be can be different
Step.So satellite headend 100 can utilize satellite link 200 idle periods to transmit data to
Preserve on node server 201,202, on the one hand can save renting of satellite repeater
Cost, on the other hand also can improve the utilization rate of satellite link.Described idle periods is satellite link
The channel of 200 is in the time period of relative free state.
During satellite communication, need at satellite headend 100 described digital media data
Allow it to adapt to satellite communication mode through various complex process, after satellite transmits
Need satellite earth antenna to be received, and need further exist for other hardware devices to described numeral
Media data carries out the process of corresponding data could obtain the Digital Media adapting to described user terminal
Data.By arranging data reception antenna 401 sum on described node server in the present embodiment
According to processing unit 402 to complete reception process and described data handling procedure, and then obtain adaptation
The digital media data of user terminal.Compared to arranging satellite reception sky on each user terminal
For line and data processing unit, the mode provided in the present embodiment can simplify user terminal
Hardware device, reduces user terminal cost of manufacture.
In one embodiment, described data processing unit 402 may include that
Modem, for being demodulated process to described modulated digital media data；
High-frequency/low-frequency signal adapter, in order to change described digital media data from high-frequency signal
For low frequency signal；
Analog/digital signal conversion device, in order to change described digital media data from analogue signal
For digital signal；
Demultiplexer, in order to demultiplex described digital media data；With
PID filter, in order to carry out PID filtration to described digital media data.
In another embodiment, this data processing unit 402 can also only include above-mentioned listing respectively
A part for item.In another embodiment, described data processing unit 402 can also include using
In described modulated digital media data being carried out other hardware devices processed, to obtain symbol
Share the final data of family terminal requirements, thus simplify the hardware device of user terminal.Here need
It being understood that and the hardware comprised at the data processing unit 402 of node server is set
Standby, then can save in corresponding user terminal.
Described user terminal 301～308 is specifically as follows Set Top Box, computer or smart mobile phone,
Those skilled in the art are readily apparent that, described user terminal is not restricted to only the said equipment.
A kind of satellite digital distributing method provided for another embodiment of the present invention as shown in Figure 4,
Including:
Step 11, is sent modulated digital media data by satellite headend via satellite link；
Step 12, is received described modulated Digital Media by the node server in LAN
Data, and store after described modulated digital media data is carried out data process；
Step 13, at least one being connected by described LAN with described node server
User terminal directly obtains the described digital media data processed through data from described node server.
Wherein, described user terminal can actively obtain described through data from described node server
The digital media data processed.Or, described node server is by the described number processed through data
Word media data multicast is pushed to described user terminal, to adapt to different LAN bandwidth.
Described LAN is preferably Ethernet.
Described data handling procedure includes: be demodulated described modulated digital media data
Process, high-frequency/low-frequency signal conversion processes, analog/digital signal conversion process, demultiplex use
Reason and PID filtration treatment, in order to make through data process after described digital media data can
Meet user terminal demand, thus simplify the processing procedure of user terminal.Certainly, this area skill
Art personnel should know, above-mentioned data procedures is not limited to this, can be according to the actual requirements to institute
State data handling procedure to be adjusted.
Above example is merely to illustrate technical scheme, is not limited to the present invention
Protection domain.Amendment that technical scheme can be carried out by those skilled in the art or
Person replaces on an equal basis, without deviating from the spirit and scope of technical solution of the present invention.
Claims (12)
1. a satellite digital publishing system, for sending digital media data from satellite headend
To user terminal, described satellite digital publishing system includes:
Satellite headend, for launching modulated digital media data, described sky in satellite idle periods
The not busy phase is the time period that the channel of satellite link is in relative free state；
At least one LAN, each LAN bag at least one LAN described
Include:
The node server being connected by satellite link with described satellite headend；Described node
Server includes the satellite earth antenna for receiving described modulated digital media data, right
Described modulated digital media data carries out the data processing unit of data process, and storage warp
The memorizer of the digital media data that data process；
At least one user terminal, it is connected with described node server by described LAN
Connect, directly to obtain the digital media data processed through data from described node server；Wherein,
The time that described user terminal obtains described digital media data is described with the transmitting of described satellite headend
The time irreversibility of digital media data；
Wherein, described digital media data be music, books, newpapers and periodicals, magazine, courseware or
Game.
Satellite digital publishing system the most according to claim 1, it is characterised in that described
The described digital media data processed through data is pushed to described user terminal by node server.
Satellite digital publishing system the most according to claim 1, it is characterised in that described
User terminal actively accesses described node server and downloads the described Digital Media processed through data
Data.
Satellite digital publishing system the most according to claim 1, it is characterised in that described
Data processing unit includes:
Modem, in order to be demodulated described digital media data.
Satellite digital publishing system the most according to claim 4, it is characterised in that described
Data processing unit also include following in one or more:
High-frequency/low-frequency signal adapter, in order to change described digital media data from high-frequency signal
For low frequency signal；
Analog/digital signal conversion device, in order to change described digital media data from analogue signal
For digital signal；
Demultiplexer, in order to demultiplex described digital media data；With
PID filter, in order to carry out PID filtration to described digital media data.
6. according to the arbitrary described satellite digital publishing system of claim 15, it is characterised in that
Described LAN is Ethernet.
7. a satellite digital distributing method, including:
Modulated Digital Media number is sent in satellite idle periods via satellite link by satellite headend
The time period of relative free state it is according to the channel that, described idle periods is satellite link；
Described digital media data is received by the node server in LAN, and to described number
Word media data stores after carrying out data process；
At least one user terminal being connected by described LAN with described node server
The digital media data processed through data is directly obtained from described node server；Wherein, described
User terminal obtains time and the described satellite headend described numeral of transmitting of described digital media data
The time irreversibility of media data；
Wherein, described digital media data be music, books, newpapers and periodicals, magazine, courseware or
Game.
Satellite digital distributing method the most according to claim 7, it is characterised in that described
The described digital media data processed through data is pushed to described user terminal by node server.
Satellite digital distributing method the most according to claim 7, it is characterised in that described
User terminal actively accesses described node server and downloads the described Digital Media processed through data
Data.
10., according to the arbitrary described satellite digital distributing method of claim 79, its feature exists
In, described data process and at least include described modulated digital media data is demodulated place
Reason.
11. satellite digital distributing methods according to claim 10, it is characterised in that institute
State data process also include following in one or more: high-frequency/low-frequency signal conversion processes, mould
Plan/digital signal conversion process, demultiplexing process and PID filtration treatment.
12. satellite digital distributing methods according to claim 11, it is characterised in that institute
Stating LAN is Ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310134400.7A CN103236880B (en) | 2013-04-18 | 2013-04-18 | A kind of satellite digital publishing system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310134400.7A CN103236880B (en) | 2013-04-18 | 2013-04-18 | A kind of satellite digital publishing system and method |
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| CN103236880A CN103236880A (en) | 2013-08-07 |
| CN103236880B true CN103236880B (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310134400.7A Expired - Fee Related CN103236880B (en) | 2013-04-18 | 2013-04-18 | A kind of satellite digital publishing system and method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763018B (en) * | 2014-01-17 | 2017-02-08 | 航天数字传媒有限公司 | Data receiving method for user terminal of satellite |
| CN104539633A (en) * | 2015-01-21 | 2015-04-22 | 冯山泉 | Large multimedia file content receiving method and system |
| CN105049415B (en) * | 2015-06-09 | 2019-06-21 | 上海文广科技（集团）有限公司 | A kind of method and system by satellite remote transmission data |
| WO2018023526A1 (en) * | 2016-08-04 | 2018-02-08 | 深圳市华讯星通讯有限公司 | Wireless communication method for terminal, and terminal |
| CN106059654A (en) * | 2016-08-04 | 2016-10-26 | 深圳市华讯星通讯有限公司 | Wireless communication method and device for terminal |
| CN113452431B (en) * | 2021-06-25 | 2022-10-11 | 亚太卫星宽带通信（深圳）有限公司 | Method for optimizing satellite network data service by utilizing edge computing technology |
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| CN1348649A (en) * | 1998-10-23 | 2002-05-08 | 斯塔盖德数字网络有限公司 | Ethernet digital storage (EDS) card and satellite transmission system |
| CN200976634Y (en) * | 2006-10-16 | 2007-11-14 | 祝万昌 | Digital media player for receiving DVB data broadcasting |
| CN101114974A (en) * | 2007-08-29 | 2008-01-30 | 南京中网通信有限公司 | Device and method for establishing private LAN using satellite network |
| CN101127676A (en) * | 2007-07-06 | 2008-02-20 | 清华大学 | Network access and control method based on satellite multicast and backhaul channel sharing |
| CN203225755U (en) * | 2013-04-18 | 2013-10-02 | 航天数字传媒有限公司 | Satellite digital distribution system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7324469B2 (en) * | 2003-09-29 | 2008-01-29 | System Services, Inc. | Satellite distributed high speed internet access |
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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348649A (en) * | 1998-10-23 | 2002-05-08 | 斯塔盖德数字网络有限公司 | Ethernet digital storage (EDS) card and satellite transmission system |
| CN200976634Y (en) * | 2006-10-16 | 2007-11-14 | 祝万昌 | Digital media player for receiving DVB data broadcasting |
| CN101127676A (en) * | 2007-07-06 | 2008-02-20 | 清华大学 | Network access and control method based on satellite multicast and backhaul channel sharing |
| CN101114974A (en) * | 2007-08-29 | 2008-01-30 | 南京中网通信有限公司 | Device and method for establishing private LAN using satellite network |
| CN203225755U (en) * | 2013-04-18 | 2013-10-02 | 航天数字传媒有限公司 | Satellite digital distribution system |
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| CN103236880A (en) | 2013-08-07 |
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