Set-top box program search
In the analog television system, the search of the TV channel only needs to carry on according to the frequency point one by one. In the digital television system, the channel and the program service are no longer one-to-one correspondence, the parameters of the channel transmission system also have a variety of configurations. Therefore, the set-top box search for the program should correspond to the front-end broadcast system design.
Generally, a fixed channel is designated by the operator as a channel for releasing channel configuration information. The channel parameters are pre-built in the set-top box.