Enhanced digital broadcasting transmitter

Abstract

The invention relates to an enhanced digital broadcasting transmitter. The enhanced digital broadcasting transmitter comprises a first multiplexing device and a second multiplexing device, wherein the first multiplexing device is used for multiplexing basic digital audio data and basic digital video data, the sampling rate of the basic digital audio data is lower than that of acquired audio data, and the sampling rate of the basic digital video data is lower than that of the acquired video data; and second multiplexing device is connected with the first multiplexing device to receive multiplexed data and is used for multiplexing the multiplexed data, the acquired audio data and acquired video data, and sending all the multiplexed data through a DVB (Digital Video Broadcasting) channel. By virtue of the enhanced digital broadcasting transmitter, a normal data stream and a basic data stream which meets the basic requirements of a user can be simultaneously multiplexed and sent out, and then a receiving end can conveniently and adaptively select different data streams to receive according to the local channel environment, so that sounds and images which are continuous all the time can be showed for the receiving user.

Description

technical field [0001] The invention relates to the field of digital television broadcasting, in particular to an enhanced digital broadcasting transmitter. Background technique [0002] Digital Video Broadcasting (DVB, Digital Video Broadcasting) is a series of internationally recognized digital television open standards maintained by the "DVB Project." The "DVB Project" is an industrial organization composed of more than 300 members. The Joint Technical Committee (JTC) jointly formed by the European Telecommunications Standards Institute (ETSI), the European Committee for Electrotechnical Standardization (CENELEC) and the European Broadcasting Union (EBU) ) initiated. [0003] DVB system transmission methods are as follows: satellite TV (DVB-S and DVB-S2), cable TV (DVB-C), terrestrial TV (DVB-T), handheld terrestrial wireless (DVB-H). These standards define the physical layer and data link layer of the transmission system. The device interacts with the physical layer t...

AI Technical Summary

Problems solved by technology

[0006] However, the existing DVB transmission is an ideal channel transmission mode. For the receiving users, it often occurs that the receiving channel is bad and the picture is discontinuous or even impossible to watch. If the signal quality is too poor and lasts for a long time, a On the one hand, users feel very uncomfortable. On the other hand, sometimes key information cannot be received. From this point of view, the existing transmission methods lack a transmission method that allows the receiver to always receive a coherent signal.

Images