I don't know if you have those tiny ads called bumps

Not normally. They seem to be becoming more prevalent -- particularly on satellite and cable channels.

Often, a series of films on a particular channel will be sponsored by a particular advertiser, and they'll get a tiny ad at the beginning/end of each ad break -- Stella Artois have been doing this recently.

And the logo of the station that's omnipresent in the corner of the screen, supposedly but not really noninvasive is called a bug

Again, this is restricted to the satellite and cable channels, but I can see it becoming more prevalent.