Do you mean the station ID? For example Fox has their logo in the corner from time to time. This is directly from Fox, and is in the source material; thus the cable company nor satelite are involved.
But, if you mean a channel description of what channel you are watching, the start and end time of the program, the program's title, and a 3 sentence synopsis of what the program is; that's available on satelite as either a transparent overlay, or a non-transparent page. This 'ad' is controlled, meaning you can turn it on, and off.