CN100389593C - Set top box and its video server overload processing method - Google Patents
Set top box and its video server overload processing method Download PDFInfo
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- CN100389593C CN100389593C CNB2005100374848A CN200510037484A CN100389593C CN 100389593 C CN100389593 C CN 100389593C CN B2005100374848 A CNB2005100374848 A CN B2005100374848A CN 200510037484 A CN200510037484 A CN 200510037484A CN 100389593 C CN100389593 C CN 100389593C
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Abstract
A set top box can dispose the condition of video server's overweight, it includes play-requesting cell, playing cell, detecting overweight condition cell, and standard playing timing cell. The requesting cell sends request to video server; the playing cell plays the film delivered back by video server; the detecting overweight cell detects if the video server is overweighed. The invention also discloses a kind of method used for the regarded set top box to dispose video server's overweight. It can detect the video server's overweight in time, and works out the overweight timing automatically to lighten video server's burden and prevents repeated playing.
Description
[technical field]
The present invention relates to the method for a kind of network equipment and processing server thereof overload, relate in particular to the method for a kind of set-top box and video server overload processing thereof.
[background technology]
(Multimedia On Demand MOD) has important status in the service, and is former because the user can arbitrarily click the broadcast of film by described function, and can control in the process of playing with selecting video in multimedia with selecting video capability.Above-mentioned functions all need be passed through real time streaming transport protocol, and (Real-Time Streaming Protocol RTSP) realizes.
Set-top box (Set Top Box) sends a line request by real time streaming transport protocol to video server, promptly shows the line that both sides are successful if video server is accepted described line request.Then, set-top box sends a playing request to video server again, if video server is accepted described playing request, will transmit film and give set-top box.If the user needs control that the broadcast of film is correlated with in the process of playing, for example the user selects time-out in the playing process of film, or film is play in F.F. and playback.The user can transmit association requests and give video server simultaneously by set-top box provided by key control.If video server is accepted described request, then it will be by the desired broadcast state of user, with film advance to set-top box, to reach with the purpose of selecting video.Yet, when video server overload, its with set-top box between communicate by letter just may produce unusual.For example might produce the film that video server will play retransfers to the situation of set-top box.
So, the method for a kind of set-top box that addresses the above problem of needs and video server overload processing thereof.
[summary of the invention]
For solving the deficiency that above-mentioned prior art exists, the technical issues that need to address are to provide a kind of set-top box that video server produces overload of handling.
In addition, also need to provide a kind of above-mentioned set-top box that is applied to, to handle the method that video server produces overload.
A kind of set-top box can be handled the situation that video server produces overload, and it comprises a playing request unit, a broadcast unit, an overload detecting unit and a normal play time calculating unit.Described playing request unit is used for sending playing request to video server; Described broadcast unit is used to play described video server and sends the film of returning; Whether described overload detecting unit is used to detect video server and overloads; Normal play time when described normal play time calculating unit is used to calculate video server generation overload.Also disclose in an embodiment of the present invention a kind of method that is applied to above-mentioned set-top box with video server overload processing is arranged.
A kind of method of set-top box processes video server overload is used to handle the situation that video server produces overload, comprises the steps: to send the playing request that comprises logical character to video server, and the response of the playing request of receiver, video server; Whether overload according to playing request response detecting video server; If overload, the normal play time when calculating video server generation overload; Send the playing request that comprises the normal play time to video server.
Whether technique scheme can be detected video server timely and overload, and the time that film has been play when calculating video server voluntarily overload taking place, with the burden that alleviates video server and avoid film to play again.
[description of drawings]
Fig. 1 is set-top box and the video server connection diagram in an embodiment of the present invention.
Fig. 2 for the set-top box in an embodiment of the present invention from sending the flow chart that the line request is play to normal mode.
Fig. 3 enters the flow chart of speical play pattern for the set-top box in an embodiment of the present invention from normal play mode.
Fig. 4 enters the flow chart of normal play mode for the set-top box in an embodiment of the present invention from the speical play pattern.
Fig. 5 is the flow chart that set-top box in an embodiment of the present invention and video server disconnect line.
[embodiment]
See also Fig. 1, be depicted as set-top box 100 and video server 300 connection diagrams in an embodiment of the present invention.
Set-top box 100 in an embodiment of the present invention is connected with video server 300 by broadband network 200.Broadband network 200 comprises the broadband network that uses the digital user loop technology, and the broadband network of use hybred fiber-coax cable technology etc.Store the required film resource of set-top box 100 in the video server 300.
Set-top box 100 in an embodiment of the present invention includes a man-machine interface unit 111, a line request (Setup request) unit 113, a playing request (Play request) unit 115, a normal play time calculating unit 119, an overload detecting unit 117, a broadcast unit 121 and disconnection line request (Teardown request) unit 123.
In the present embodiment, the user can and disconnect line request unit 123 by man-machine interface unit 111 control line request units 113, playing request unit 115.The user desires to carry out can pass through directly control man-machine interface unit 111 realizations when line, disconnection line, F.F., playback and time-out etc. are operated.
Man-machine interface unit 111 is the window of user's controller top box 100, and the user need realize by the man-machine interface unit to all operations that set-top box 100 is sent.Line request unit 113 is used to set up communicating to connect between set-top box 100 and the video server 300.Promptly, line request unit 113 is responsible for receiving the order from man-machine interface unit 111, send a line request to video server 300, require video server 300 to distribute an interconnection resources for set-top box 100, and handle the line request response that video server 300 transmissions are returned.Playing request unit 115 is used for sending a playing request to video server 300, requires video server 300 to distribute a movie resource to it, and handles video server 300 and send the playing request or the control response of returning.When the user desires with normal mode broadcast film, can send the normal mode playing request to video server 300 by man-machine interface unit 111 controls playing request units 115.When the user desires with special patterns such as F.F., playback and time-out broadcast film, also can send corresponding special pattern playing request to video server 300 by man-machine interface unit 111 controls playing request units 115.Whether overload detecting unit 117 is used to detect video server 300 and overloads.Normal play time calculating unit 119 is used to calculate the normal play time of film when overload takes place video server 300.Broadcast unit 121 is used to play film, and it can enter normal mode under user's control or special pattern is play.Disconnect the line that line request unit 123 is used to disconnect between set-top box 100 and the video server 300.
See also Fig. 2, be depicted as set-top box 100 in an embodiment of the present invention from sending the flow chart that the line request is play to normal mode.
Enter step S211, line request unit 113 sends a line request and flows (Real-Time Stream) to video server 300 in real time to start one, and video server 300 promptly is to give set-top box 100 Resources allocation by real-time stream.The line request that line request unit 113 sends to video server 300 comprises following information at least:
The version of the Internet Protocol address of set-top box 100 and the real time streaming transport protocol of use;
Set-top box 100 is sent the sequence number (Sequence code) of this line request, and this line request is line request for the first time, so its sequence number is 1;
The film format that set-top box 100 is supported, for example MPEG-2 (Moving Picture ExpertGroup) form or WMV (Windows Media Video) form;
Set-top box 100 employed host-host protocols, for example User Datagram Protoco (UDP) (User DatagramProtocol, UDP) or transmission control protocol (Transmisson Control Protocol, TCP);
Set-top box 100 is used to receive the port of data and the Internet Protocol address of video server 300 etc.
The version of the real time streaming transport protocol that set-top box 100 is used;
The conditional code (Status Code) of described line request response, described conditional code is used to represent video server 300 whether to agree this line request, if allow in the present embodiment then send " 200 ", this moment show set-top box 100 successful with video server 300 lines, if do not allow then send " 403 ", this line failure is described;
The sequence number that described line is responded is identical with the sequence number of above-mentioned line request;
The session number (Session ID) that set-top box 100 and video server 300 are set up;
The title of video server 300 and the version information of operating system;
Film format and employed host-host protocol that set-top box 100 desires receive;
Information such as the bandwidth of the Internet Protocol address of video server 300 and communication port thereof, transmission film and packet size are used to describe the size of the field of film relevant information.
Wherein, the description of aforesaid film relevant information comprises the broadcast scope (Range) of film.Video server 300 can be represented the broadcast scope in two ways, first kind for show time mark (Presentation Time Stamp, PTS), for example " Range:pts=71287-560857513 ", unit be (Bit); Second kind be the normal play time (Normal Play Time, NPT), for example " Range:npt=1200.00-end ", unit is second (Second).Wherein the normal play time is meant film from position that initial position to film has been play during this period of time, and it can calculate by showing time mark.In follow-up communication process, communicating by letter between set-top box 100 and the video server 300 all transmitted film with the normal play time.In the present embodiment, show that time mark also is used for basis of calculation reproduction time simultaneously when overload takes place video server 300.
In step S213, when set-top box 100 successes set up line with video server 300 after, enter step S215, playing request unit 115 sends a playing request (Play Request) that comprises logical character to video server 300.The described playing request that comprises the logical sub symbol comprises following information at least:
The Internet Protocol address of video server 300;
The sequence number of this playing request is for the sequence number of aforesaid line request adds an integer; For example, send then should on the basis of aforementioned line request, add 3 if this playing request is the 4th;
The broadcasting speed of film represents that with " Scale:1.00 " film is with normal speed forward;
The session number that set-top box 100 and video server 300 are set up, session number equates with the session number of aforesaid line request response.
Because this playing request is first playing request, film does not begin to play as yet, even video server 300 overloads, the broadcast scope of its set-top box that sends to 100 is the same for the movie scope that " 0.00-end " and set-top box 100 have just begun to play film also.So the broadcast scope of this playing request informs that with logical character " beginning-end " the film scope that video server 300 desires are play is broadcast from the beginning to the end, i.e. " Range:npt=beginning-end ".
In step S215, playing request unit 115 needs to wait for that video server 300 sends the playing request response (Play Response) of returning after video server 300 sends playing request, and described playing request response comprises following information at least:
The version of the employed real time streaming transport protocol of both sides;
Be used to represent whether video server 300 agrees the state code of this playing request;
The sequence number and the session number of described playing request response, described sequence number and session number are consistent with the sequence number and the session number of aforementioned playout request;
The broadcast scope of film, broadcasting speed (Scale) and line speed.
In step S217, set-top box 100 judges according to above-mentioned playing request response whether video server 300 allows to play film.If then set-top box 100 enters step S219 and plays film by broadcast unit 121.If not, then playing request unit 115 returns step S215 comprises logical character again to video server 300 transmissions one normal mode playing request once more.
See also Fig. 3, the set-top box 100 that is depicted as in an embodiment of the present invention enters the flow chart of speical play pattern from normal play mode.
Enter step S311, after set-top box 100 enters the normal mode broadcast.In this process, if detecting the user, man-machine interface unit 111 sends special pattern play instructions such as F.F., playback and time-out, then man-machine interface unit 111 promptly is responsible for relevant command information is sent to playing request unit 115.
Enter step S313, playing request unit 115 comprises the special pattern playing request of logical character to video server 300 transmissions one.Playing request unit 115 comprises following information at least in the special pattern playing request that this step sent:
The sequence number of described special pattern playing request, described sequence number are that the sequence number of the normal mode playing request among the step S211 adds an integer;
Movie speed, described broadcasting speed is the integral multiple of movie speed among the step S215, for example, if the user desires to play with the speed that is twice in normal playback speed, the value of the broadcasting speed field of then described special pattern playing request is 2, i.e. " Scale:2.00 ";
The broadcast scope of film represents that with logical character " current-end " film is played to end from present reproduction time, i.e. " Range:npt=current-end " always in the broadcast scope of film described in this step.
Enter step S315, the response of video server 300 is waited in playing request unit 115.Do not take place at video server 300 under the situation of overload, the broadcast scope during its playing request that sends to set-top box 100 responds is promptly with normal play time representation.For example, if playing request unit 115 begins to send the fast-forward play request of 2 times of speed when movie to 1200 second, then the broadcast scope in the playing request response is " Range:npt=1200.00-end ", and broadcasting speed is " Scale:2.00 ".Take place under the situation of overload at video server 300, corresponding playing request response message promptly becomes " Range:npt=0.00-end " and " Scale:2.00 ".
Enter step S317, whether the broadcast scope in the 117 detecting playing request responses of overload detecting unit is correct, to determine whether video server 300 overloads.Because film has been play a period of time in said process, not should be " 0.00-end " so video server 300 is passed to the broadcast scope of broadcast unit 121.In the present embodiment, whether overload detecting unit 117 can be that " 0.00-end " is to judge whether video server 300 overloads by the broadcast scope in the response of detecting playing request.If overload detecting unit 117 detects the broadcast scope for " 0.00-end ", show that video server 300 overloads, next enter step S319.If it is not " 0.00-end " that overload detecting unit 117 detects the broadcast scope, show that video server 300 does not overload, can directly enter step S323 with speical play mode playback film.
Enter step S319, normal play time calculating unit 119 calculates the normal play time that film has been play.In the present embodiment, normal play time calculating unit 119 inquires film from line request response broadcast scope is " Range:pts=71287-560857513 ".Then, the demonstration time stamp value in the normal play time calculating unit 119 inquiry MPEG-2 news frames, the value that for example inquires is 67535839.And the normal play speed of film is 90000 bps (the normal play speed of MPEG), so the normal play time of film is: (67535839-71287)/(90000 bps) ≈ 750 seconds.
Enter step S321, playing request unit 115 sends a special pattern playing request that comprises the normal play time that is calculated among the step S319 to video server 300.Then return step S315, playing request unit 115 waits for that video server 300 sends the playing request response of returning.If video server 300 does not allow broadcast unit 121 to play then returns the film that step S311 continues to play remainder.If video server 300 allows broadcast unit 121 to play then repeating step S317, then enter step S323 and play with special pattern.
See also Fig. 4, the set-top box 100 that is depicted as in an embodiment of the present invention enters the flow chart of normal play mode from the speical play pattern.
Enter step S411, set-top box 100 enters normal mode play after, if man-machine interface unit 111 detects the user and sends the normal mode play operation in this process, then man-machine interface unit 111 instruction promptly being responsible for being correlated with sends to playing request unit 115.
Enter step S413, playing request unit 115 comprises the normal mode playing request of logical character to video server 300 transmissions one.Playing request unit 115 comprises following information at least in the normal mode playing request that this step sent:
The sequence number of described normal mode playing request, described sequence number are that the sequence number of the normal mode playing request among the step S211 adds an integer;
Movie speed, described broadcasting speed are normal playback speed, i.e. " Scale:1.00 ";
The broadcast scope of film is to be played to end from present reproduction time with logical character " current-end " expression film in broadcast scope described in this step equally always, i.e. " Range:npt=current-end ".
Enter step S415, the response of video server 300 is waited in playing request unit 115.Do not take place at video server 300 under the situation of overload, the broadcast scope during its playing request that sends to set-top box 100 responds is with normal play time representation.For example, if the playing request unit begins to send the normal mode playing request when movie to 2200 second, then the broadcast scope in the playing request response is " Range:npt=2200.00-end ", and broadcasting speed is " Scale:1.00 ".If video server 300 overloads, then corresponding playing request response message is " Range:npt=0.00-end " and " Scale:1.00 ".
Enter step S417, whether the broadcast scope in the 117 detecting playing request responses of overload detecting unit is correct.Because film has been play a period of time in said process, not should be " 0.00-end " so video server 300 is passed to the broadcast scope of broadcast unit 121.In the present embodiment, whether overload detecting unit 117 can be that " 0.00-end " is to judge whether video server 300 overloads by the broadcast scope in the response of detecting playing request.If overload detecting unit 117 detects the broadcast scope for " 0.00-end ", show that video server 300 overloads, next need enter step S419.If it is not " 0.00-end " that overload detecting unit 117 detects the broadcast scope, show that video server 300 does not overload, can directly enter step S423 and play film with normal mode.
Enter step S419, normal play time calculating unit 119 calculates the normal play time that film has been play.In the present embodiment, the normal play time calculating unit 119 broadcast scope that inquires film from line request response is " Range:pts=71287-560857513 ".Then, the demonstration time stamp value in the normal play time calculating unit 119 inquiry MPEG-2 news frames, the value that for example inquires is 77535839.And the normal play speed of film is 90000 bps (the normal play speed of MPEG), so the normal play time of film is: (77535839-71287)/(90000 bps) ≈ 861 seconds.
Enter step S421, playing request unit 115 sends a normal mode playing request that comprises the normal play time that is calculated among the step S419 to video server 300.Then return step S415, playing request unit 115 waits for that video server 300 sends the playing request response of returning.If video server 300 does not allow broadcast unit 121 to play then returns step S411.If video server 300 allows broadcast units 121 to play then whether repeating step S417 detecting video server 300 overloads, can not enter step S423 and play with normal mode if overload does not take place.
See also Fig. 5, be depicted as the flow chart that set-top box 100 and video server 300 in an embodiment of the present invention disconnects lines.
Enter step S511, broadcast unit 121 with normally/special pattern plays.If man-machine interface unit 111 detects the user and sends the operation of disconnection line in this process, then the promptly responsible instruction that will be correlated with in man-machine interface unit 111 sends to playing request unit 115.
Enter step S513, disconnect line request unit 123 and send a disconnection line request to video server 300.Disconnect the disconnection line request that line request unit 123 sends and inform that with logical character " Teardown " video server 300 discharges stream resource in real time, disconnect information such as the sequence number that also comprises this request in the line request simultaneously and session number.
Enter step S515, disconnect line request unit 123 and wait for that video server 300 sends the disconnection line request response of returning.If video server 300 is agreed to disconnect lines then is entered step S517, if video server 300 disagree with disconnect line return step S511 continue with normally/special pattern plays.
Whether set-top box 100 in an embodiment of the present invention and video server overload processing method thereof can be detected video server 300 timely and overload, and the time that film has been play when calculating video server 300 voluntarily overload taking place, with the burden that alleviates video server 300 and avoid film to play again.
Claims (15)
1. a set-top box can be handled the situation that video server produces overload, it is characterized in that comprising:
One playing request unit is used for sending playing request to described video server, and receives the playing request response from described video server;
One broadcast unit is used to play described video server and sends the film of returning;
Whether one overload detecting unit is used for overloading according to the described video server of described playing request response detecting; And
One normal play time calculating unit, the normal play time when being used to calculate described video server overload taking place;
Wherein, described playing request unit also be used to send comprise the normal play time that described normal play time calculating unit calculated playing request to described video server.
2. set-top box as claimed in claim 1 is characterized in that also comprising a line request unit, is used for establishing a communications link with described video server.
3. set-top box as claimed in claim 1 is characterized in that also comprising that one disconnects the line request unit, is used to disconnect communicating to connect between described set-top box and the described video server.
4. set-top box as claimed in claim 1 is characterized in that also comprising a man-machine interface unit, is used to control described line request unit, described playing request unit and described disconnection line request unit.
5. set-top box as claimed in claim 1 is characterized in that the playing request that described playing request unit is sent, and comprises playing request that comprises logical character and the playing request that comprises the normal play time.
6. set-top box as claimed in claim 1 is characterized in that the playing request that described playing request unit is sent, and comprises normal mode playing request and special pattern playing request.
7. the method for a set-top box processes video server overload is used to handle the situation that video server produces overload, it is characterized in that comprising the steps:
Comprise the playing request of logical character to described video server transmission, and receive the playing request response of described video server;
Whether overload according to the described video server of described playing request response detecting;
If overload, the normal play time when calculating described video server overload taking place; And
Send the playing request that comprises the described normal play time to described video server.
8. the method for set-top box processes video server overload as claimed in claim 7 is characterized in that described playing request response comprises that one shows time mark.
9. the method for set-top box processes video server overload as claimed in claim 8 is characterized in that described playing request response comprises the normal play time.
10. the method for set-top box processes video server overload as claimed in claim 9 is characterized in that the described normal play time calculates by described reproduction time mark.
11. the method for set-top box processes video server overload as claimed in claim 7, it is characterized in that also comprising described video server according to the described playing request that comprises the normal play time, send the step of the playing request response that comprises the described normal play time.
12. the method for set-top box processes video server overload as claimed in claim 7 is characterized in that described set-top box and described video server send playing request and playing request response by real time streaming transport protocol.
13. the method for set-top box processes video server overload as claimed in claim 7 is characterized in that also comprising to described video server and sends the line request, and the step that receives line request response.
14. the method for set-top box processes video server overload as claimed in claim 7 is characterized in that the described playing request that comprises logical character comprises the normal mode playing request that comprises logical character, and the special pattern playing request that comprises logical character.
15. the method for set-top box processes video server overload as claimed in claim 7 is characterized in that described video server can normal mode and special pattern broadcast.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100374848A CN100389593C (en) | 2005-09-23 | 2005-09-23 | Set top box and its video server overload processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100374848A CN100389593C (en) | 2005-09-23 | 2005-09-23 | Set top box and its video server overload processing method |
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| CN1937707A CN1937707A (en) | 2007-03-28 |
| CN100389593C true CN100389593C (en) | 2008-05-21 |
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| CNB2005100374848A Expired - Fee Related CN100389593C (en) | 2005-09-23 | 2005-09-23 | Set top box and its video server overload processing method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1359237A (en) * | 2000-12-15 | 2002-07-17 | 清华同方股份有限公司 | Cable television network basd personalized television advertisement transmitting and receiving system |
| CN1516468A (en) * | 2003-08-29 | 2004-07-28 | 广州新华夏宽带网视讯技术有限公司 | Telephone video requesting system and its method |
-
2005
- 2005-09-23 CN CNB2005100374848A patent/CN100389593C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1359237A (en) * | 2000-12-15 | 2002-07-17 | 清华同方股份有限公司 | Cable television network basd personalized television advertisement transmitting and receiving system |
| CN1516468A (en) * | 2003-08-29 | 2004-07-28 | 广州新华夏宽带网视讯技术有限公司 | Telephone video requesting system and its method |
Also Published As
| Publication number | Publication date |
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| CN1937707A (en) | 2007-03-28 |
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Assignee: Ambit Microsystems (Shanghai) Co., Ltd. Assignor: Hongfujin Precision Industry (Shenzhen) Co., Ltd.|Hon Hai Precision Industry Co., Ltd. Contract fulfillment period: 2009.3.1 to 2019.3.1 Contract record no.: 2009990000121 Denomination of invention: Set top box and its video server overload processing method Granted publication date: 20080521 License type: Exclusive license Record date: 20090220 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.3.1 TO 2019.3.1; CHANGE OF CONTRACT Name of requester: GUOJI ELECTRONIC( SHANGHAI ) CO., LTD. Effective date: 20090220 |
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Effective date of registration: 20180402 Address after: 530007 the Guangxi Zhuang Autonomous Region, China Hi tech Zone, the headquarters of the headquarters of the road No. 18, China ASEAN enterprise base, phase 5, No. three plant Patentee after: NANNING FUGUI PRECISION INDUSTRIAL CO., LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Co-patentee before: Hon Hai Precision Industry Co., Ltd. Patentee before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. |
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Granted publication date: 20080521 Termination date: 20190923 |