Television signal transmitter combining wired television transmission and network television transmission

Abstract

The invention relates to a television signal transmitter combining wired television transmission and network television transmission. The television signal transmitter comprises a digital voice signal acquisition module, a digital video signal acquisition module, an additional data acquisition module, a packing and multiplexing module, a 8B / 10B encoding module, a synchronous character insertion module, a serial-parallel conversion module, an asynchronous serial interface (ASI) processing module, an IP (Internet Protocol) packing module, a UDP (User Datagram Protocol) packing module and a conversion control module, wherein the packing and multiplexing module is connected with the digital voice signal acquisition module, the digital video signal acquisition module and the additional data acquisition module to be respectively used for receiving compressed voice data, compressed video data and encoded additional data, packing and multiplexing the data and processing the packed and multiplexed data under the control of the conversion control module so as to obtain wired television signals or network television signals. Through the invention, the functions of the transmitter can be expanded, and wired television signal transmission and network television signal transmission are combined.

Description

technical field [0001] The invention relates to the field of digital television, in particular to a television signal transmitting device compatible with cable television transmission and network television transmission. Background technique [0002] Digital TV gradually replaces the original analog TV because it carries many programs and the program quality is good. The current digital TV can be divided into cable TV, satellite TV, terrestrial TV and Internet TV according to the transmission signal. Generally, a fixed type of transmitter corresponds to a fixed type of receiver, for example, a terrestrial TV receiver such as a terrestrial TV A set-top box only receives signals from terrestrial TV transmitters, not from other types of receivers. [0003] However, because the types of cable TV, satellite TV, terrestrial TV, and Internet TV are only in the channel transmission mode, but are the same in the multiplexing of code streams, the packaging format of transport streams...

AI Technical Summary

Problems solved by technology

[0003] However, because the types of cable TV, satellite TV, terrestrial TV, and Internet TV are only in the channel transmission mode, but are the same in the multiplexing of code streams, the packaging format of transport streams, etc., if you have to face multiple types It is necessary to build multiple types of transmitters, which is a waste of resources, especially when there are many types of receivers but a small number of actual receivers, this waste phenomenon is more prominent

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