Topic summary
Station ID

Extracted from the Wikipedia article Station identification.
Television
On television, station identification may occur in either a visual format or aural. As no audio announcement of the call sign is necessary if the information appears on screen, often the identification is fulfilled by incorporating it into a short promo for a program the station airs (such as a syndicated or network program, or a preview of an upcoming newscast), the title sequence of the station's newscasts, or automatically cued as a digital on-screen graphic briefly displayed at the required time. The identification can even be monetized as part of a regular commercial, with the text appearing in small type on the bottom of the screen (for instance, a law firm can sponsor a court show and directly lead into the beginning of a program with proper station identification, along with their ad). Translators are required to be identified and listed daily at 9 a.m. and 3 p.m. local time.