Multi-frequency channel broadcasting television interactive information order program system
Patent Information
- Authority / Receiving Office
- CN ยท China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ้็ธๅ
- Publication Date
- 2008-07-23
- Estimated Expiration
- Not applicable ยท inactive patent
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Abstract
Description
technical field
[0001] The invention relates to a radio and television system, in particular to a multi-channel radio and television interactive information on-demand system. Background technique
[0002] At present, my country's radio and television department is promoting the overall digital translation of radio and television transmission, that is, the overall conversion from the current analog transmission to digital transmission, which is what we usually call digital TV. After digital shifting of broadcasting and TV, the functions will be greatly expanded: the quality of digital TV image and sound has been greatly improved, reaching the level above that of a DVD player; it can be easily connected with various external information sources, and can be connected on the same channel. Realize the transmission and access of different services within the network, so that the TV media has changed from a single TV program transmission to a broadband comprehensive information ser...