Bidirectional video-on-demand method and system based on CAM card

Abstract

The present invention discloses a bidirectional video-on-demand method and a bidirectional video-on-demand system based on a CAM card. The bidirectional video-on-demand method comprises the steps as follows: a digital television receives an instruction for entering into a video-on-demand page, and forwards the instruction to a CAM card through a client and a CI protocol stack which are arranged at a middleware thereof; the CAM card acquires IP address information of the corresponding video-on-demand page according to the instruction and returns the IP address information back to a browser of the digital television; and the browser of the digital television acquires and displays the corresponding video-on-demand page according to the IP address information returned from the CAM card. Through adoption of the method and the system of the present invention, video-on-demand speed can be improved, and correlated video data of bidirectional video-on-demand can be obtained from different front-end servers.

Description

technical field [0001] The invention relates to the technical field of digital television, in particular to a two-way video-on-demand method and system based on a CAM card. Background technique [0002] With the development of digital TV and network technology, digital TV can provide more and more functions. The operator provides the interactive digital TV on demand service based on the IPAM (IP Address Management, IP address management) mode for the set-top box users with two-way interactive function. The two-way interactive set-top box requests the program on demand from the server, and the server sends the program information to the digital TV. [0003] However, if figure 1 As shown, the existing on-demand mode comprises application layer, application frame layer, and library three-layer software architecture ( figure 1 Each layer in the software only provides some functional modules for reference), and the TV management module is set in the application framework layer...

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Problems solved by technology

[0003] However, if figure 1 As shown, the existing on-demand mode comprises application layer, application framework layer, and library three-layer software architecture ( figure 1 Each layer in the software only provides some functional modules for reference), and the TV management module is set in the application framework layer to handle the logic and connection relationship of on-demand broadcasting. The process of module processing and on-demand is slow; and the front-end servers selected by operators in different regions are different, and the hardware structure of digital TV will also be different. Therefore, the two-way on-demand methods of digital TV in different regions are different. Digital TV It is impossible to obtain relevant video data of two-way on-demand from different front-end servers

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