CN102255782A - Channel management method for digital television and digital home network system - Google Patents
Channel management method for digital television and digital home network system Download PDFInfo
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Abstract
The embodiment of the invention discloses a channel management method for a digital television and a digital home network system. The method comprises that: a television adapter in the digital television transmits channel request information to a home gateway; the home gateway transmits a channel address to the television adapter according to the channel request information; the television adapter transmits a connection request to the home gateway according to the channel address; the home gateway establishes data connection with the television adapter according to the connection request; and the home gateway transmits acquired channel data to the television adapter. The embodiment of the invention can realize reliable communication between the digital television and the home gateway by establishing the connection, transmitting the data and releasing the connection, more effectively control and manage a plurality of digital televisions by adding fields into a message frame, solve the problems of different channel needs of the different digital televisions and reduce hardware cost, and can be simply developed.
Description
Technical field
The present invention relates to the digital home network technical field, relate in particular to a kind of management method and digital family network system of Digital Television mid band.
Background technology
Along with the development of family digitalization, one family inside exists many Digital Television and becomes very general already, even also will have more intelligent wireless terminal to add the ranks of digital home.(Community Antenna Television CATV) provides a main path of digital television program to the cable television network of current access subscriber household, and in addition the user also can obtain own interested TV programme by the Internet.
Existing digital household environment is to be the home network at center with the home gateway, and wherein home gateway is in charge of the network of planning as a whole whole family, is the core in the home network; And digital terminal equipments such as Digital Television, portable terminal, water power gas meter can also be arranged except home gateway.Home gateway is not only taken on the function of gateway and is had the function of multiple server, as the function of streaming media server.Multiple streaming media server is arranged at present, for example the QuickTime of the VideoCharger of the Windows Media of the RealSystem of RealNetworks company, Microsoft, IBM Corporation, Apple company and the VLC that increases income etc.The VLC multimedia player is supported numerous audio ﹠ video decoders and file format, and supports all kinds of streaming protocol.VLC is not only powerful, and can carry out detailed custom-modification according to the exploitation needs.
When the server requests digital television program, the demand between the different user of how managing, cooperate is an an open question still always when relating to the multi-user digital television identical.At present, double frequency head set-top box can satisfy two users and select different channels to watch simultaneously, but this method also can only satisfy two users' demand, and then can lose efficacy for more user, and the double frequency head means higher cost, therefore increase receiving card from hardware and must cause cost to increase, and do not solve the problem of more users demand.The double frequency head is by arranging that two tv receiver cards receive the TV signal to CATV, are pushed to different TV user then respectively.And adopt VLC also to have different schemes as streaming media server, some scheme is made amendment to the code of VLC itself and is reached the purpose of specific occasion demand, the prerequisite of doing like this is to carry out deep analysis and understanding to the code of VLC, and the construction cycle of this scheme is grown, has a big risk, and makes mistakes easily in the process of revising.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the invention provides a kind of management method and digital family network system of Digital Television mid band, can solve the problem of the different channel demand of different digital TV, can reduce hardware cost, and exploitation is simple.
In order to address the above problem, the present invention proposes a kind of management method of Digital Television mid band, described method comprises:
TV adapter in the Digital Television sends to home gateway with channel request information;
Described home gateway sends to described TV adapter according to described channel request information with channel address;
Described TV adapter sends connection request according to described channel address to described home gateway;
Described home gateway is set up data according to described connection request with described TV adapter and is connected;
Described home gateway sends to described TV adapter with the channel data that gets access to.
Preferably, described home gateway comprises the step that channel address sends to described TV adapter according to described channel request information:
The gateway control point of described home gateway is according to described channel request information inquiry and obtain described channel request information frequency points corresponding information;
The name a person for a particular job frequency point information that obtained of described gateway control sends to the streaming media server of described home gateway;
Described streaming media server obtains the channel address of frequency point information correspondence according to described frequency point information;
Described streaming media server sends to described gateway control point with the channel address that is obtained;
The described gateway control described channel address of naming a person for a particular job sends to adapter control point in the described TV adapter.
Preferably, described TV adapter comprises to the step that described home gateway sends connection request according to described channel address:
DST PLAYER in the described TV adapter receives the channel address from described adapter control point;
Described DST PLAYER sends connection request according to the streaming media server of described channel address in described media gateway.
Preferably, after described home gateway sends to the step of described TV adapter with the channel data that gets access to, also comprise:
Described TV adapter sends to described home gateway and discharges connection message;
Described home gateway disconnects being connected between described home gateway and the described TV adapter according to described release connection message.
Preferably, described method also comprises:
Described home gateway pins the frequency that primary adapter in the described TV adapter is asked the channel place of the channel address correspondence that obtains;
Send channel request information from adapter to described home gateway in the described TV adapter;
The channel that described home gateway is judged described channel request information correspondence whether described primary adapter is asked the frequency at the channel place of the channel address correspondence that obtains;
If then described home gateway sends channel data to described from adapter;
If not, then described home gateway to described send from adapter described primary adapter ask all channel address the frequency at channel place of the channel address correspondence that obtains to described from adapter.
Preferably, described home gateway to described send from adapter described primary adapter ask all channel address the frequency at channel place of the channel address correspondence that obtains to described after the step of adapter, also comprise:
Describedly described all channel address, select arbitrary channel, and connection request is sent to described home gateway according to the channel address of this channel correspondence from adapter;
Described home gateway is set up data from adapter and is connected with described according to described connection request.
Correspondingly, the embodiment of the invention also discloses a kind of digital family network system, described digital family network system comprises home gateway and at least one Digital Television, described Digital Television comprises the TV adapter, described TV adapter comprises DST PLAYER and adapter control point, and described home gateway comprises gateway control point and streaming media server; Wherein,
TV adapter in the Digital Television sends to home gateway with channel request information;
Described home gateway sends to described TV adapter according to described channel request information with channel address;
Described TV adapter sends connection request according to described channel address to described home gateway;
Described home gateway is set up data according to described connection request with described TV adapter and is connected;
Described home gateway sends to described TV adapter with the channel data that gets access to.
Preferably, described home gateway pins the frequency that primary adapter in the described TV adapter is asked the channel place of the channel address correspondence that obtains; Send channel request information from adapter to described home gateway in the described TV adapter; The channel that described home gateway is judged described channel request information correspondence whether described primary adapter is asked the frequency at the channel place of the channel address correspondence that obtains; If then described home gateway sends channel data to described from adapter; If not, then described home gateway to described send from adapter described primary adapter ask all channel address the frequency at channel place of the channel address correspondence that obtains to described from adapter.
Preferably, describedly described all channel address, select arbitrary channel, and connection request is sent to described home gateway according to the channel address of this channel correspondence from adapter; Described home gateway is set up data from adapter and is connected with described according to described connection request.
Implement the embodiment of the invention, the transmission by establishment of connection, data and the release of connection can realize the reliable communication between Digital Television and the home gateway, by in message frame, increasing as a plurality of Digital Television of control and management (specifically being the TV adapter) more effectively such as " DEVID " field, can solve the problem of the different channel demand of different digital TV, can reduce hardware cost, and exploitation is simple.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of management method of the Digital Television mid band of the embodiment of the invention;
Fig. 2 is a data establishment of connection process schematic diagram among the inventive method embodiment;
Fig. 3 is the process schematic diagram of exchanges data among the inventive method embodiment;
Fig. 4 is the configuration schematic diagram of a plurality of TV adapters among the inventive method embodiment;
Fig. 5 connects the process schematic diagram that discharges among the inventive method embodiment;
Fig. 6 is that the digital family network system structure of the embodiment of the invention is formed schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the schematic flow sheet of management method of the Digital Television mid band of the embodiment of the invention, and as shown in Figure 1, this method comprises:
S101, the TV adapter in the Digital Television sends to home gateway with channel request information;
S102, home gateway sends to the TV adapter according to channel request information with channel address;
S103, the TV adapter sends connection request according to channel address to home gateway;
S104, home gateway set up data according to connection request with the TV adapter and are connected;
S105, home gateway sends to the TV adapter with the channel data that gets access to.
Further, S102 comprises:
The gateway control point of home gateway is according to the channel request information inquiry and obtain channel request information frequency points corresponding information; The name a person for a particular job frequency point information that obtained of gateway control sends to the streaming media server of home gateway; Streaming media server obtains the channel address of frequency point information correspondence according to frequency point information; Streaming media server sends to the gateway control point with the channel address that is obtained; The gateway control channel address of naming a person for a particular job sends to adapter control point in the TV adapter.
In embodiments of the present invention, streaming media server is VLC (VideoLan Client); Gateway control point is in order to the supervision and management in addition of the communication between streaming media server and the client.The TV adapter includes adapter control point and client DST PLAYER, the embodiment of the invention adopts the VLC player to be used as the player of Streaming Media, the adapter control point is in order to the communication of monitoring TV adapter, comprises communicating by letter between communicating by letter between adapter control point and the DST PLAYER, TV adapter and the home gateway.
Be described in detail below by the channel request process of example the inventive method.This process may further comprise the steps:
Step 1: the user carries out the channel selection of program by remote controller, and the monitoring module in the TV adapter receives infrared signal, this signal is handed to parsing module resolve, and resolves the channel request information that obtains;
Step 2: the adapter control point sends to home gateway with channel request information;
Step 3: the gateway control point of home gateway receives channel request information, tables look-up and carries out the frequency correspondence, and the search frequency point information that obtains is submitted to streaming media server;
Step 4: streaming media server draws its corresponding channel address according to frequency, then this channel address is returned to the gateway control point;
Step 5: the gateway control channel address of naming a person for a particular job sends to adapter control point in the TV adapter;
Step 6: the adapter control point is transmitted to client DST PLAYER in the adapter with the address, and the client DST PLAYER sends connection request according to this channel address to streaming media server.
In embodiments of the present invention, mainly be on application layer, to carry out the reliable transmission design.
The definition such as the table 1 that are used for the message frame structure of connection request comprise the version number (Version) of agreement, the device number (DevID) of sign client, command field (Command), data field (Length) length (Data).
Table 1 message frame organization definition table
| Version | EevID | Command | Lenghth | Data |
The specific definition table of message frame structure is as shown in table 2.
Table 2 frame structure specific definition table
| Field name | Chinese name | Length (byte) | Describe | |
| | Version number | 1 | Protocol version identification | |
| | Device number | 1 | The sign client identity | |
| | Command word | 1 | The action of this | |
| Length | Length | |||
| 2 | The length of Data | |||
| Data | Data | Elongated | Data division |
As shown in table 1, version number only needs 1 byte just enough; Because number of users still is limited in the family, but can distribute 256 users with 1 byte.
Further, S103 can comprise: the DST PLAYER in the TV adapter receives the channel address from the adapter control point; DST PLAYER sends connection request according to the streaming media server of channel address in media gateway.
The DST PLAYER here is the client DST PLAYER in the TV adapter.
Fig. 2 is a data establishment of connection process schematic diagram among the inventive method embodiment, and incipient stage adapter control point and gateway control point two ends all are in (CLOSED) state of closing.Square frame among Fig. 2 below object shows adapter control point and the residing separately state of gateway control point respectively.The home gateway start is in listening state after initialization, wait for the connection request of miscellaneous equipment (as digital TV).Behind the Digital Television switch, adapter control point in the TV adapter sends " HELLO " message for the gateway control point of home gateway, the expression connection request, be in " SYNSENT " state then, if the adapter control point does not obtain replying in official hour, then the adapter control point is in " SYNSENT " state always, continues to send connection request to gateway control point.After the gateway control point of home gateway receives " HELLO " message, an acknowledge message " ACK=1 " is replied at the adapter control point, distribute a unique device number " DEV=XXX " for simultaneously the adapter at this place, adapter control point, the gateway control point is in " SYNRCVD " state after sending.Adapter receives after affirmation information that gateway sends and device number distribute, and replys an acknowledge message " ACK=1 ", is in the state that connects foundation then, i.e. " ESTABLISHED " state.After gateway control is checked and accepted affirmation message " ACK=1 " from the adapter control point, also be in and connect the state of setting up (" ESTABLISHED " state).So far, finished and connected 3 handshake procedures setting up, follow-uply can carry out exchanges data.The concrete steps that process is set up in above-mentioned connection are as follows:
Step 1: through a series of initialization, transfer " LISTEN " state to by " CLOSED " state after the home gateway start, adapter sends connection request (" HELLO " message) to gateway control point, and is in " SYN-SENT " state through after the initialization;
Step 2: the gateway control point is received the adapter number of allocating a device of replying an acknowledge message and giving this place, adapter control point to the adapter control point after " HELLO " message, " ACK=1; DEVID=XXX, then the gateway control point enters " SYN-RCVD " state;
Step 3: the adapter control point enters " ESTABLISHED " state after receiving this acknowledge message, sends " ACK=1 " message authentication to gateway control point simultaneously and connects foundation; The gateway control point receives to enter after " ACK=1 " message that the adapter control point sends and connects the state " ESTABLISHED " of setting up that so far the establishment of connection process finishes.
Table 3 is allocation tables of " command word " field in the message frame structure, the meaning of this this packet of command word field identification.
The allocation table of " command word " field in the table 3 message frame structure
| Command value | Command word | Describe | |
| 0 | Keep and do not use | ||
| 1 | | Connection request | |
| 2 | GOODBYE | Connect and discharge | |
| 3 | ACK | Confirm | |
| 4 | CHANGE | Change channel commands | |
| 5 | ADDRESS | Reply channel address |
In concrete the enforcement, as shown in Figure 3, S105 is achieved as follows description.
Shown in Figure 3 is once typical data exchange process.At first send one to the request message of P1 channel i.e. " Request P1 " by the adapter control point, this P1 channel can be by the user by straighforward operation, the adapter control point receives and resolves and obtains; After the gateway control point receives this solicited message, judge whether this channel belongs to current frequency, if then return the channel address of this channel; Behind the adapter control point acquisition channel address this channel address is sent to the DST PLAYER of place, adapter control point adapter; DST PLAYER sends media data request by channel address " rtsp:P1 " to streaming media server; Streaming media server receives stream medium data request backward current media player and sends stream medium data (channel data).In concrete the enforcement, can have heartbeat detection between adapter control point and gateway control point, so that both sides confirm the other side's existence, this heart time can be made as 1 minute or other.
When the digital family network system of the embodiment of the invention comprised a plurality of adapter, the method for the embodiment of the invention can also comprise:
Home gateway pins the frequency that primary adapter in the TV adapter is asked the channel place of the channel address correspondence that obtains;
Send channel request information from adapter to home gateway in the TV adapter;
The channel that home gateway is judged channel request information correspondence whether primary adapter is asked the frequency at the channel place of the channel address correspondence that obtains;
If then home gateway is to sending channel data from adapter;
If not, then home gateway asks all channel address the frequency at channel place of the channel address correspondence that obtains to from adapter to send primary adapter from adapter.
As shown in Figure 4, this process is achieved as follows:
Whether be the problem of current frequency, this needs to handle in addition if not current frequency if in above-mentioned data exchange process, relating to this request.Under the situation of unique user (single TV adapter), streaming media server can return corresponding channel address information then by switching frequency; But in the digital home network environment that a plurality of users (a plurality of TV adapter) arranged, current streaming media server can only pin a frequency at every turn, and each frequency comprises 7 digital TV channels, and each transmission is all information of a frequency.Primary adapter is determined with being connected when setting up by data from adapter, is promptly decided by the device number DEVID that adapter obtained, and setting up the adapter that data are connected with home gateway A earlier is primary adapter B, afterwards be from adapter C.During primary adapter B request P1 channel, home gateway A pins the F1 frequency at P1 place, to the data of primary adapter B transmission F1, decodes the P1 channel data in the data of primary adapter B in F1 then.To home gateway A request P2 channel, home gateway A judges whether this P2 channel belongs in the F1 frequency, if to transmitting the F1 data from adapter C, decode the P2 channel data from adapter C among F1 then from adapter C; If the P2 channel does not belong in the frequency F1, home gateway A reselects in 7 channels that F1 provides from adapter C return the information of all channels of a F1 from adapter C so.Can select any one channel the F1 from adapter C, also can select to abandon, withdraw from.
After S105, can also may further comprise the steps:
The TV adapter sends to home gateway and discharges connection message;
Home gateway disconnects being connected between home gateway and the TV adapter according to discharging connection message.
Fig. 5 shows the connection dispose procedure of the inventive method.
When primary adapter B will withdraw from, send " GOODBYE " message to home gateway A; Home gateway A receives the transfer of data that stops after the message primary adapter B that withdraws from of primary adapter B, and the device number of cancelling primary adapter B; It is new main equipment from adapter that home gateway A selects original one of them, as shown in Figure 5, can select adapter C, sends selected notification message to adapter C; Adapter C returns an acknowledge message; Withdrawing from of primary adapter B and selecting of a new primary adapter C have so just been finished.If withdraw from be one from adapter, for example from adapter C, the dispose procedure that only need connect then, and do not relate to primary adapter more select process.
It should be noted that if an adapter accident withdraws from home gateway can confirm whether this adapter exists by heartbeat detection.If there is no, cancel its device number.If home gateway occurs unexpected, then adapter also can confirm whether home gateway exists by heartbeat detection.
In embodiments of the present invention, the transmission by establishment of connection, data and the release of connection can realize the reliable communication between Digital Television and the home gateway, by in message frame, increasing as a plurality of Digital Television of control and management (specifically being the TV adapter) more effectively such as " DEVID " field, in addition, can realize the purpose of exploitation fast.
Correspondingly, the embodiment of the invention also discloses a kind of digital family network system, as shown in Figure 6, this digital family network system comprises home gateway 1 and at least one Digital Television (not shown), Digital Television comprises TV adapter 2, TV adapter 2 comprises DST PLAYER 21 and adapter control point 20, and home gateway comprises gateway control point 10 and streaming media server 11; Wherein,
In addition, when having a plurality of TV adapter, home gateway pins the frequency that primary adapter in the TV adapter is asked the channel place of the channel address correspondence that obtains; Send channel request information from adapter to home gateway in the TV adapter; The channel that home gateway is judged channel request information correspondence whether primary adapter is asked the frequency at the channel place of the channel address correspondence that obtains; If then home gateway is to sending channel data from adapter; If not, then home gateway asks all channel address the frequency at channel place of the channel address correspondence that obtains to from adapter to send primary adapter from adapter.All channel address, select arbitrary channel from adapter, and connection request is sent to home gateway according to the channel address of this channel correspondence; Home gateway according to connection request with set up data from adapter and be connected.
The all right UTI card 12 of said system is used for obtaining channel data from CATV, and streaming media server 11 obtains the channel data that TV adapter 2 is asked by UTI card 12.
Can repeat no more here referring to the associated description among the inventive method embodiment about the implementation procedure that foundation, transfer of data, connection discharges that is connected between the home gateway in the digital family network system in the embodiment of the invention and the TV adapter.
More than the management method and the digital family network system of the Digital Television mid band that the embodiment of the invention provided is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. the management method of a Digital Television mid band is characterized in that, described method comprises:
TV adapter in the Digital Television sends to home gateway with channel request information;
Described home gateway sends to described TV adapter according to described channel request information with channel address;
Described TV adapter sends connection request according to described channel address to described home gateway;
Described home gateway is set up data according to described connection request with described TV adapter and is connected;
Described home gateway sends to described TV adapter with the channel data that gets access to.
2. the management method of Digital Television mid band as claimed in claim 1 is characterized in that, described home gateway comprises the step that channel address sends to described TV adapter according to described channel request information:
The gateway control point of described home gateway is according to described channel request information inquiry and obtain described channel request information frequency points corresponding information;
The name a person for a particular job frequency point information that obtained of described gateway control sends to the streaming media server of described home gateway;
Described streaming media server obtains the channel address of frequency point information correspondence according to described frequency point information;
Described streaming media server sends to described gateway control point with the channel address that is obtained;
The described gateway control described channel address of naming a person for a particular job sends to adapter control point in the described TV adapter.
3. as the management method of the Digital Television mid band of claim 1 or 2, it is characterized in that described TV adapter comprises to the step that described home gateway sends connection request according to described channel address:
DST PLAYER in the described TV adapter receives the channel address from described adapter control point;
Described DST PLAYER sends connection request according to the streaming media server of described channel address in described media gateway.
4. the management method of Digital Television mid band as claimed in claim 1 is characterized in that, after described home gateway sends to the step of described TV adapter with the channel data that gets access to, also comprises:
Described TV adapter sends to described home gateway and discharges connection message;
Described home gateway disconnects being connected between described home gateway and the described TV adapter according to described release connection message.
5. the management method of Digital Television mid band as claimed in claim 1 is characterized in that, described method also comprises:
Described home gateway pins the frequency that primary adapter in the described TV adapter is asked the channel place of the channel address correspondence that obtains;
Send channel request information from adapter to described home gateway in the described TV adapter;
The channel that described home gateway is judged described channel request information correspondence whether described primary adapter is asked the frequency at the channel place of the channel address correspondence that obtains;
If then described home gateway sends channel data to described from adapter;
If not, then described home gateway to described send from adapter described primary adapter ask all channel address the frequency at channel place of the channel address correspondence that obtains to described from adapter.
6. the management method of Digital Television mid band as claimed in claim 5, it is characterized in that, described home gateway to described send from adapter described primary adapter ask all channel address the frequency at channel place of the channel address correspondence that obtains to described after the step of adapter, also comprise:
Describedly described all channel address, select arbitrary channel, and connection request is sent to described home gateway according to the channel address of this channel correspondence from adapter;
Described home gateway is set up data from adapter and is connected with described according to described connection request.
7. digital family network system, described digital family network system comprises home gateway and at least one Digital Television, it is characterized in that, described Digital Television comprises the TV adapter, described TV adapter comprises DST PLAYER and adapter control point, and described home gateway comprises gateway control point and streaming media server; Wherein,
TV adapter in the Digital Television sends to home gateway with channel request information;
Described home gateway sends to described TV adapter according to described channel request information with channel address;
Described TV adapter sends connection request according to described channel address to described home gateway;
Described home gateway is set up data according to described connection request with described TV adapter and is connected;
Described home gateway sends to described TV adapter with the channel data that gets access to.
8. digital family network system as claimed in claim 7 is characterized in that,
Described home gateway pins the frequency that primary adapter in the described TV adapter is asked the channel place of the channel address correspondence that obtains;
Send channel request information from adapter to described home gateway in the described TV adapter;
The channel that described home gateway is judged described channel request information correspondence whether described primary adapter is asked the frequency at the channel place of the channel address correspondence that obtains;
If then described home gateway sends channel data to described from adapter;
If not, then described home gateway to described send from adapter described primary adapter ask all channel address the frequency at channel place of the channel address correspondence that obtains to described from adapter.
9. digital family network system as claimed in claim 8 is characterized in that,
Describedly described all channel address, select arbitrary channel, and connection request is sent to described home gateway according to the channel address of this channel correspondence from adapter;
Described home gateway is set up data from adapter and is connected with described according to described connection request.
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| CN102255782B (en) | 2012-12-05 |
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