Transmission method of rich media scene in broadcast network

Abstract

The invention discloses a transmission method of a rich media scene in a broadcast network, which comprises the following steps: (1) at a sending end, update and an initial scene or a current scene synthesized at a previous time are synthesized into a new current scene, the initial scene or the current scene synthesized at a previous time is replaced, new rich media scene data with the un-synthesized update is formed, and the currently sent rich media scene data is replaced; and (2) the initial scene and the current scene adopt a scene channel for transmitting by broadcasting in a file mode; and the un-synthesized update adopts an update channel for transmitting in a flow mode. Compared with uniform transmission, when split transmission is adopted, the transmission bandwidth is saved, and simultaneously the transmission burden is reduced. The data processing amount of a receiving end is reduced, thereby lightening the burden of the receiving end.

Description

technical field [0001] The invention belongs to the technical field of rich media, and more specifically relates to a method for transmitting rich media scenes in a broadcast network. Background technique [0002] Generally speaking, the most important thing in the rich media business is the rich media scene information, which describes the presentation and interaction modes of other various media resources. According to the idea of ​​rich media, a rich media service may contain multiple rich media scenes, and the switching between scenes can be triggered by user operations or time. [0003] A rich media scene consists of an initial scene and possibly multiple updates. These updates can be pushed by the sender in sequence, or generated by applying to the server through user interaction. Updating can add, delete, and replace media objects to the original scene, so that the content of the scene changes and presents a dynamic effect. Since the change of the scene is closely r...

AI Technical Summary

Problems solved by technology

However, it is unavoidable that packet loss or error will affect the reception during transmission, so it is necessary to use corresponding error correction technology to avoid this problem

Under normal circumstances, only the same error correction algorithm can be used when the scene and the update are transmitted together, and the encoding process generally does not distinguish whether the information is a scene or an update. For receiving terminals that have successfully accessed the service, in order to obtain the update information, they must go through complicated procedures. The decoding process gets updated information and discards a lot of useless scene information

Doing so will undoubtedly increase the transmission burden and the decoding burden of the receiving terminal; on the other hand, the update data is less important than the scene data, and an error correction coding algorithm with a lower code rate can be used, and even no protection is required. If the same The error correction coding strategy will cause a waste of bandwidth

Images