The mosaic of channels from the received signal 1 - sec, according to Japanese standard of digital television and its variants

摘要

The mosaic of channels from the received signal 1 - sec according to the standard jadonu00eas digital television and its variants. The system aims to display samples of video channels available in the transmission system of digital TV in order to be manipulated by the viewer. The ISDB-T provides that services such as the transmission of command are implemented.In turn, the hierarchical transmission allows different receptors to receive and process the signal, and generate sounds and images according to their characteristics, such as, for example, for mobile phones. The transmitted signal is divided into 13 sections, which themselves into different groups.These groups are called layers, and each of them is encoded and modulated separately, such that recipients of the narrow band (portable devices) are only part of the transmitted signal.This system allows the transmission of television signal from three layers which vary in the level of robustness of the signal and for transmission of portable devices for the protection of the signal is greater. After each line of channel sampling (image or video) is stored in the memory of the receiver.Soon after the acquisition in all channels except for the channel, which will be presented to highlight, termed here the channel in real time, the channel of real time is so tuned, and positioned at the side of the channels with images, or video sampled.