TWI414184B - A set-top box and video-on-demand method of the set-top box - Google Patents

A set-top box and video-on-demand method of the set-top box Download PDF

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TWI414184B
TWI414184B TW98133290A TW98133290A TWI414184B TW I414184 B TWI414184 B TW I414184B TW 98133290 A TW98133290 A TW 98133290A TW 98133290 A TW98133290 A TW 98133290A TW I414184 B TWI414184 B TW I414184B
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video
demand
client unit
service quality
wimax
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TW98133290A
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TW201112761A (en
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Han Tzung Lin
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Hon Hai Prec Ind Co Ltd
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Abstract

The present invention provides a set-top box. The set-top box can provide QoS (quality of service) for video on demand based on WiMAX, improve performance of video on demand based on WiMAX. A related method is also disclosed.

Description

機頂盒及其視頻點播方法 Set top box and video on demand method thereof

本發明涉及一種機頂盒及其視頻點播方法。 The invention relates to a set top box and a video on demand method thereof.

VOD(video-on-demand)是視頻點播技術的簡稱，也稱為互動式視頻點播系統，即根據用戶的需要播放相對應的視頻節目。WiMAX(全球微波接入互通)是一項新興的寬頻無線接入技術，是針對微波和毫米波頻段提出的一種新的空中介面標準。相對於目前廣泛使用的WCDMA和CDMA技術，WiMAX不僅資料傳輸距離較遠，而且還具有QoS(服務品質)保障、傳輸速率高、業務豐富多樣等優點。因此，如何實現在WiMAX網路中提供視頻點播服務品質保證將是一門重要的研究課題。然而，目前的WiMAX系統中只定義空口的局部資訊，在整個WiMAX接入網端到端的QoS參數和流程定義都是空白，在WiMAX系統中還無法為不同的用戶提供不同的服務品質保證。 VOD (video-on-demand) is an abbreviation of video on demand technology, also known as interactive video on demand system, that is, playing corresponding video programs according to the needs of users. WiMAX (Worldwide Interoperability for Microwave Access) is an emerging broadband wireless access technology that is a new air interface standard for microwave and millimeter wave bands. Compared with the widely used WCDMA and CDMA technologies, WiMAX not only has a long data transmission distance, but also has the advantages of QoS (service quality) guarantee, high transmission rate, and rich and diverse services. Therefore, how to provide video on-demand service quality assurance in WiMAX networks will be an important research topic. However, in the current WiMAX system, only the local information of the air interface is defined, and the end-to-end QoS parameters and process definitions of the entire WiMAX access network are blank, and the WiMAX system cannot provide different service quality guarantees for different users.

鑒於以上內容，有必要提供一種機頂盒及其視頻點播方法，可以給基於WiMAX網路的視頻點播提供客制化的服務品質保證，提高了無線網路視頻點播系統的性能。 In view of the above, it is necessary to provide a set-top box and a video on-demand method thereof, which can provide a customized service quality guarantee for video on demand based on WiMAX network, and improve the performance of the wireless network video on demand system.

一種機頂盒，該機頂盒透過WiMAX基站與視頻點播伺服器進行通信，該機頂盒包括視頻點播用戶端單元和WiMAX用戶端單元，其中：所述視頻點播用戶端單元，用於發送視頻設置請求給視頻點播伺服器，接收視頻點播伺服器返回的視頻檔案資訊和視頻點播用戶端單元的服務品質 資訊，對所接收的服務品質資訊進行修改，以得到客制化服務品質資訊，並將客制化服務品質資訊發送給WiMAX用戶端單元；WiMAX用戶端單元，用於接收從所述視頻點播用戶端發送來的客制化服務品質資訊，並發送包含所述客制化服務品質資訊的服務品質設置請求給WiMAX基站；所述視頻點播用戶端單元還用於發送視頻播放請求給視頻點播伺服器，接收視頻點播伺服器返回的視頻檔案資料流，所述返回的視頻檔案資料流由WiMAX基站按照所述客制化服務品質資訊提供服務品質保證。 A set-top box, the set-top box communicates with a video on-demand server through a WiMAX base station, the set-top box includes a video on demand client unit and a WiMAX client unit, wherein: the video on demand client unit is configured to send a video setup request to the video on demand servo Receive video file information returned by the video on demand server and service quality of the video on demand client unit Information, modify the received service quality information to obtain customized service quality information, and send the customized service quality information to the WiMAX client unit; the WiMAX client unit is configured to receive the user from the video on demand Transmitting the customized service quality information, and sending a service quality setting request including the customized service quality information to the WiMAX base station; the video on demand client unit is further configured to send a video play request to the video on demand server Receiving a video archive data stream returned by the video on demand server, and the returned video archive data stream is provided by the WiMAX base station according to the customized service quality information to provide service quality assurance.

一種機頂盒視頻點播方法，該機頂盒透過WiMAX基站與視頻點播伺服器進行通信，該機頂盒包括視頻點播用戶端單元和WiMAX用戶端單元，該方法包括步驟：視頻點播用戶端單元發送視頻檔案設置請求給視頻點播伺服器；視頻點播伺服器接收視頻檔案設置請求，並返回視頻檔案資訊和視頻點播用戶端單元的服務品質資訊給視頻點播用戶端單元；視頻點播用戶端單元對所接收的服務品質資訊進行修改，以得到客制化服務品質資訊，並將客制化服務品質資訊發送給WiMAX用戶端單元；WiMAX用戶端單元接收從所述視頻點播用戶端發送來的客制化服務品質資訊，並發送包含所述客制化服務品質資訊的服務品質設置請求給WiMAX基站；視頻點播用戶端單元發送視頻播放請求給視頻點播伺服器；及視頻點播伺服器返回的視頻檔案資料流給視頻點播用戶端單元，所述返回的視頻檔案資料流由WiMAX基站按照所述客制化服務品質資訊提供服務品質保證。 A set-top box video on demand method, the set top box communicates with a video on demand server through a WiMAX base station, the set top box includes a video on demand client unit and a WiMAX client unit, the method comprising the steps of: the video on demand client unit sends a video file setting request to the video The on-demand server; the video on-demand server receives the video file setting request, and returns the video file information and the service quality information of the video on-demand client unit to the video on demand client unit; the video on demand client unit modifies the received service quality information To obtain customized service quality information, and send the customized service quality information to the WiMAX client unit; the WiMAX client unit receives the customized service quality information sent from the video on demand client, and sends the included The service quality setting request of the customized service quality information is sent to the WiMAX base station; the video on demand client unit sends a video play request to the video on demand server; and the video archive data returned by the video on demand server is sent to the video on demand client unit, The returned view The frequency profile data stream is guaranteed by the WiMAX base station in accordance with the customized service quality information.

相較於習知技術，所述的機頂盒及其視頻點播方法，可以給基於WiMAX網路的視頻點播提供客制化的服務品質保證，為基於WiMAX網路的視頻點播系統提供了更為合理的服務品質參數，提高了無線網路視頻點播系統的性能。 Compared with the prior art, the set-top box and its video on-demand method can provide customized service quality guarantee for video on demand based on WiMAX network, and provide a more reasonable video on demand system based on WiMAX network. Service quality parameters improve the performance of wireless network video on demand systems.

如圖1所示，係本發明機頂盒較佳實施例的硬體架構圖。所述機頂盒1透過WiMAX網路與WiMAX基站2相連，WiMAX基站2透過網際網路3與VOD伺服器4相連。 1 is a hardware architecture diagram of a preferred embodiment of the set top box of the present invention. The set top box 1 is connected to the WiMAX base station 2 via a WiMAX network, and the WiMAX base station 2 is connected to the VOD server 4 via the Internet 3.

所述VOD伺服器4中儲存有VOD用戶端單元10的QoS資訊。在本實施例中，所述QoS資訊包括：resource-allocation(資源配置，用來定義資源配置的優先權高低)，admission-control(許可權控制，當系統達到一定負荷時，用來定義使用者資源使用的優先順序)，congestion-control(擁塞控制，當系統資源吃緊時，用來定義資料包丟棄的優先順序)，buffering(緩衝，用來定義使用者資料包緩衝區的大小)，scheduling(排程，用來定義使用者資料包排程的優先順序)，traffic-priority(業務處理優先順序，具體取值0-7)，max-sustained-traffic-rate(最大持續業務速率，單位kbps)，min-reserved-traffic-rate(最小預留業務速率，單位kbps)，max-latency(最大時延)。 The VOD server 4 stores the QoS information of the VOD client unit 10. In this embodiment, the QoS information includes: resource-allocation (resource configuration, which is used to define the priority of resource configuration), and admission-control (permission control, when the system reaches a certain load, used to define the user) Resource usage priority), congestion-control (congestion control, when system resources are tight, used to define the priority of packet drop), buffering (buffer, used to define the size of the user data packet buffer), scheduling ( Scheduling, which is used to define the priority order of user profile scheduling), traffic-priority (service processing priority, specific value 0-7), max-sustained-traffic-rate (maximum sustained service rate, in kbps) , min-reserved-traffic-rate (minimum reserved service rate, in kbps), max-latency (maximum delay).

所述機頂盒1包括VOD用戶端單元10和WiMAX用戶端單元12，其中：所述VOD用戶端單元10用於發送視頻設置請求給VOD伺服 器4。在本實施例中，所述視頻設置請求包括：所點播視頻檔案的位址(例如：rtsp：//172.17.131.26：5012/asset/vscontsrv：0074000230)，信號傳輸所遵循的協定及版本(例如：RTSP/1.0)，命令序列號(例如：CSeq：1)，VOD用戶端單元10所支援檔的格式和檔傳輸協定(例如：Transport：MP2T/H2221/UDP)，接收文件的埠(例如：destination=10.128.1.140：57984)，VOD用戶端單元10所連接的網路(WiMAX網路)。 The set top box 1 includes a VOD client unit 10 and a WiMAX client unit 12, wherein: the VOD client unit 10 is configured to send a video setting request to the VOD server. Device 4. In this embodiment, the video setting request includes: an address of the video file to be requested (for example, rtsp://172.17.131.26:5012/asset/vscontsrv:0074000230), a protocol and a version followed by the signal transmission (for example, :RTSP/1.0), command serial number (for example: CSeq: 1), the format and file transfer protocol (for example: Transport: MP2T/H2221/UDP) supported by the VOD client unit 10, and the file received (for example: Destination=10.128.1.140:57984), the network to which the VOD client unit 10 is connected (WiMAX network).

所述VOD用戶端單元10還用於接收VOD伺服器4返回的視頻檔案資訊和VOD用戶端單元10的QoS資訊。在本實施例中，所述視頻檔案資訊包括：命令序列號(例如：CSeq：1)，時域(例如：session：150563f5ed14af9d84)，VOD用戶端單元10所支援檔的格式和檔傳輸協定(例如：Transport：MP2T/H2221/UDP)，接收文件的埠(例如：destination=10.128.1.140：57984)，資料包大小(例如：packet_size=8648/8648/188)，檔內容類型(例如：content-type：application/sdp)，檔內容長度(例如：content-length：495單位？)。 The VOD client unit 10 is further configured to receive the video file information returned by the VOD server 4 and the QoS information of the VOD client unit 10. In this embodiment, the video file information includes: a command sequence number (for example: CSeq: 1), a time domain (for example, session: 150563f5ed14af9d84), a format and a file transfer protocol supported by the VOD client unit 10 (for example, :Transport:MP2T/H2221/UDP), the file receiving the file (for example: destination=10.128.1.140:57984), the packet size (for example: packet_size=8648/8648/188), the file content type (for example: content-type) :application/sdp), the length of the file content (for example: content-length: 495 units?).

所述VOD用戶端單元10還用於對所接收的QoS資訊進行修改，以得到客制化QoS資訊，並將客制化QoS資訊發送給WiMAX用戶端單元12。 The VOD client unit 10 is further configured to modify the received QoS information to obtain customized QoS information, and send the customized QoS information to the WiMAX client unit 12.

所述WiMAX用戶端單元12用於接收所述客制化QoS資訊，並發送包含所述客制化QoS資訊的QoS設置請求給WiMAX 基站2。WiMAX基站2接收從所述WiMAX用戶端單元12發送來的QoS設置請求，根據接收的QoS設置請求中的客制化QoS資訊為VOD用戶端單元10所點播的視頻檔案提供服務品質保證。 The WiMAX client unit 12 is configured to receive the customized QoS information, and send a QoS setting request including the customized QoS information to the WiMAX Base station 2. The WiMAX base station 2 receives the QoS setting request sent from the WiMAX client unit 12, and provides a service quality guarantee for the video file requested by the VOD client unit 10 according to the customized QoS information in the received QoS setting request.

所述WiMAX用戶端單元12還用於接收WiMAX基站2返回的確認資訊，以確認WiMAX基站2已接受QoS設置請求。 The WiMAX client unit 12 is further configured to receive the acknowledgement information returned by the WiMAX base station 2 to confirm that the WiMAX base station 2 has accepted the QoS setup request.

所述WiMAX用戶端單元12還用於發送確認資訊給VOD用戶端單元10，以確認已完成QoS客制化設置。 The WiMAX client unit 12 is further configured to send confirmation information to the VOD client unit 10 to confirm that the QoS customization setting has been completed.

所述VOD用戶端單元10還用於發送視頻播放請求給VOD伺服器4。 The VOD client unit 10 is further configured to send a video play request to the VOD server 4.

所述VOD用戶端單元10還用於接收VOD伺服器4返回的視頻檔案資料流。所述返回的視頻檔案資料流由WiMAX基站2中的客制化QoS資訊提供服務品質保證。 The VOD client unit 10 is further configured to receive a video archive data stream returned by the VOD server 4. The returned video archive data stream is guaranteed by the customized QoS information in the WiMAX base station 2.

如圖2所示，係本發明機頂盒視頻點播方法的較佳實施例的具體實施流程圖。 As shown in FIG. 2, it is a specific implementation flowchart of a preferred embodiment of the video on demand method of the set top box of the present invention.

步驟S10，VOD用戶端單元10發送視頻檔案設置請求給VOD伺服器4。 In step S10, the VOD client unit 10 sends a video file setting request to the VOD server 4.

步驟S11，VOD伺服器4接收視頻檔案設置請求，並返回視頻檔案資訊和VOD用戶端單元10的QoS資訊給VOD用戶端單元10。 In step S11, the VOD server 4 receives the video file setting request, and returns the video file information and the QoS information of the VOD client unit 10 to the VOD client unit 10.

步驟S12，VOD用戶端單元10對所接收的QoS資訊進行修改，以得到客制化QoS資訊，並將客制化QoS資訊發送給WiMAX用戶端單元12。 In step S12, the VOD client unit 10 modifies the received QoS information to obtain customized QoS information, and sends the customized QoS information to the WiMAX client unit 12.

步驟S13，WiMAX用戶端單元12接收客制化QoS資訊，並發送包含所述客制化QoS資訊的QoS設置請求給WiMAX基站2。WiMAX基站2接收QoS設置請求，根據該QoS設置請求中的客制化QoS資訊為VOD用戶端單元10所點播的視頻檔案提供服務品質保證。 In step S13, the WiMAX client unit 12 receives the customized QoS information and sends a QoS setting request containing the customized QoS information to the WiMAX base station 2. The WiMAX base station 2 receives the QoS setting request, and provides the service quality guarantee for the video file requested by the VOD client unit 10 according to the customized QoS information in the QoS setting request.

步驟S14，WiMAX基站2發送確認資訊給WiMAX用戶端單元12，以確認已完成QoS設置請求。 In step S14, the WiMAX base station 2 sends an acknowledgement message to the WiMAX client unit 12 to confirm that the QoS setup request has been completed.

步驟S15，WiMAX用戶端單元12發送確認資訊給VOD用戶端單元10，以確認已完成QoS客制化設置。 In step S15, the WiMAX client unit 12 sends a confirmation message to the VOD client unit 10 to confirm that the QoS customization setting has been completed.

步驟S16，VOD用戶端單元10發送視頻播放請求給VOD伺服器4。 In step S16, the VOD client unit 10 sends a video play request to the VOD server 4.

步驟S17，VOD伺服器4返回的視頻檔案資料流給VOD用戶端單元10。所述返回的視頻檔案資料流由WiMAX基站2中的客制化QoS資訊提供服務品質保證。 In step S17, the video archive data returned by the VOD server 4 is sent to the VOD client unit 10. The returned video archive data stream is guaranteed by the customized QoS information in the WiMAX base station 2.

綜上所述，本發明符合發明專利要件，爰依法提出專利申請。惟，以上所述者僅為本發明之較佳實施例，本發明之範圍並不以上述實施例為限，舉凡熟悉本案技藝之人士援依本發明之精神所作之等效修飾或變化，皆應涵蓋於以下申請專利範圍內。 In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

1‧‧‧機頂盒 1‧‧‧Set top box

10‧‧‧VOD用戶端單元 10‧‧‧VOD client unit

12‧‧‧WiMAX用戶端單元 12‧‧‧WiMAX client unit

2‧‧‧WiMAX基站 2‧‧‧WiMAX base station

3‧‧‧網際網路 3‧‧‧Internet

4‧‧‧VOD伺服器 4‧‧‧VOD server

圖1係本發明機頂盒較佳實施例的硬體架構圖。 1 is a hardware architecture diagram of a preferred embodiment of a set top box of the present invention.

圖2係本發明機頂盒視頻點播方法較佳實施例的具體實施流程圖。 2 is a flow chart of a specific implementation of a preferred embodiment of a video on demand method for a set top box of the present invention.

1‧‧‧機頂盒 1‧‧‧Set top box

10‧‧‧VOD用戶端單元 10‧‧‧VOD client unit

12‧‧‧WiMAX用戶端單元 12‧‧‧WiMAX client unit

2‧‧‧WiMAX基站 2‧‧‧WiMAX base station

3‧‧‧網際網路 3‧‧‧Internet

4‧‧‧VOD伺服器 4‧‧‧VOD server

Claims (8)

一種機頂盒，該機頂盒透過WiMAX基站與視頻點播伺服器進行通信，該機頂盒包括視頻點播用戶端單元和WiMAX用戶端單元，其中：所述視頻點播用戶端單元，用於發送視頻設置請求給視頻點播伺服器，接收視頻點播伺服器返回的視頻檔案資訊和視頻點播用戶端單元的服務品質資訊，對從視頻點播伺服器所接收的服務品質資訊進行修改以得到視頻點播用戶端單元的客制化服務品質資訊，並將得到的客制化服務品質資訊發送給所述WiMAX用戶端單元；所述WiMAX用戶端單元，用於接收從所述視頻點播用戶端單元發送來的客制化服務品質資訊，並發送包含所述客制化服務品質資訊的服務品質設置請求給所述WiMAX基站；所述視頻點播用戶端單元還用於發送視頻播放請求給視頻點播伺服器，接收視頻點播伺服器返回的視頻檔案資料流，所述視頻檔案資料流由WiMAX基站按照所述客制化服務品質資訊提供服務品質保證。 A set-top box, the set-top box communicates with a video on-demand server through a WiMAX base station, the set-top box includes a video on demand client unit and a WiMAX client unit, wherein: the video on demand client unit is configured to send a video setup request to the video on demand servo Receiving the video file information returned by the video on demand server and the service quality information of the video on demand client unit, modifying the service quality information received from the video on demand server to obtain the customized service quality of the video on demand client unit Information, and the obtained customized service quality information is sent to the WiMAX client unit; the WiMAX client unit is configured to receive customized service quality information sent from the video on demand client unit, and Sending a service quality setting request including the customized service quality information to the WiMAX base station; the video on demand client unit is further configured to send a video play request to the video on demand server, and receive the video file returned by the video on demand server Data stream, the video archive data stream is pressed by the WiMAX base station The customized service quality information to provide service quality assurance. 如申請專利範圍第1項所述的機頂盒，其中，所述WiMAX用戶端單元還用於接收WiMAX基站返回的確認資訊，以確認WiMAX基站已接受服務品質設置請求，及發送確認資訊給視頻點播用戶端單元，以確認已完成服務品質客制化設置。 The set top box of claim 1, wherein the WiMAX client unit is further configured to receive confirmation information returned by the WiMAX base station to confirm that the WiMAX base station has accepted the service quality setting request, and send the confirmation information to the video on demand user. End unit to confirm that the service quality customization has been completed. 如申請專利範圍第1項所述的機頂盒，其中，所述視頻設置請求包括所點播視頻檔案的位址，信號傳輸所遵循的協定及版本，命令序列號，視頻點播用戶端單元所支援檔的 格式和檔傳輸協定，接收檔的埠和視頻點播用戶端單元所連接的網路。 The set top box of claim 1, wherein the video setting request includes an address of the video file to be clicked, a protocol and version followed by the signal transmission, a command serial number, and a file supported by the video on demand client unit. The format and file transfer protocol, the network of the receiving file and the network to which the video on demand client unit is connected. 如申請專利範圍第1項所述的機頂盒，其中，所述服務品質資訊包括資源配置、許可權控制、擁塞控制、緩衝、排程、業務處理優先順序、最大持續業務速率、最小預留業務速率和最大時延。 The set top box according to claim 1, wherein the service quality information includes resource configuration, permission control, congestion control, buffering, scheduling, service processing priority, maximum sustained service rate, and minimum reserved service rate. And maximum delay. 一種機頂盒視頻點播方法，該機頂盒透過WiMAX基站與視頻點播伺服器進行通信，該機頂盒包括視頻點播用戶端單元和WiMAX用戶端單元，該方法包括步驟：視頻點播用戶端單元發送視頻檔案設置請求給視頻點播伺服器；視頻點播伺服器接收視頻檔案設置請求，並返回視頻檔案資訊和視頻點播用戶端單元的服務品質資訊給視頻點播用戶端單元；視頻點播用戶端單元對從視頻點播伺服器所接收的服務品質資訊進行修改，以得到視頻點播用戶端單元的客制化服務品質資訊，並將客制化服務品質資訊發送給所述WiMAX用戶端單元；WiMAX用戶端單元發送包含所述客制化服務品質資訊的服務品質設置請求給所述WiMAX基站；視頻點播用戶端單元發送視頻播放請求給視頻點播伺服器；及視頻點播伺服器返回視頻檔案資料流給視頻點播用戶端單元，所述視頻檔案資料流由WiMAX基站按照所述客制化服務品質資訊提供服務品質保證。 A set-top box video on demand method, the set top box communicates with a video on demand server through a WiMAX base station, the set top box includes a video on demand client unit and a WiMAX client unit, the method comprising the steps of: the video on demand client unit sends a video file setting request to the video The on-demand server; the video on-demand server receives the video file setting request, and returns the video file information and the service quality information of the video on demand client unit to the video on demand client unit; the video on demand client unit receives the received from the video on demand server The service quality information is modified to obtain customized service quality information of the video on demand client unit, and the customized service quality information is sent to the WiMAX client unit; the WiMAX client unit sends the customized service. The service quality setting request of the quality information is sent to the WiMAX base station; the video on demand client unit sends a video play request to the video on demand server; and the video on demand server returns the video archive data stream to the video on demand client unit, the video archive data Stream by WiMAX Station service quality assurance in accordance with the customized service quality information. 如申請專利範圍第5項所述的機頂盒視頻點播方法，該方 法還包括：WiMAX基站發送確認資訊給WiMAX用戶端單元，以確認已完成服務品質設置請求，WiMAX用戶端單元發送確認資訊給視頻點播用戶端單元，以確認已完成服務品質客制化設置。 The video-on-demand method of the set-top box as described in claim 5, the party The method further includes: the WiMAX base station sends a confirmation message to the WiMAX client unit to confirm that the service quality setting request has been completed, and the WiMAX client unit sends a confirmation message to the video on demand client unit to confirm that the service quality customization setting has been completed. 如申請專利範圍第5項所述的機頂盒視頻點播方法，其中，所述視頻設置請求包括所點播視頻檔案的位址，信號傳輸所遵循的協定及版本，命令序列號，視頻點播用戶端單元所支援檔的格式和檔傳輸協定，接收檔的埠和視頻點播用戶端單元所連接的網路。 The set-top box video on demand method according to claim 5, wherein the video setting request includes an address of the video file to be recorded, a protocol and a version followed by the signal transmission, a command serial number, and a video on demand client unit. The format and file transfer protocol of the support file, the network of the receiving file and the network to which the video on demand client unit is connected. 如申請專利範圍第5項所述的機頂盒視頻點播方法，其中，所述服務品質資訊包括資源配置、許可權控制、擁塞控制、緩衝、排程、業務處理優先順序、最大持續業務速率、最小預留業務速率和最大時延。 The set-top box video on demand method according to claim 5, wherein the service quality information includes resource configuration, permission control, congestion control, buffering, scheduling, service processing priority, maximum continuous service rate, minimum pre-predetermination Stay business rate and maximum latency.
TW98133290A 2009-09-30 2009-09-30 A set-top box and video-on-demand method of the set-top box TWI414184B (en)

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