Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for providing customized television advertisements. In one aspect, television advertising templates are used for generating customized television advertisements. The television advertisement templates include targeting criteria specifying targeting conditions for the television advertising template, which are conditions for selecting the television advertisement template for an advertisement availability, and content selection criteria specifying availability content associated with an advertisement availability for use in selecting variable advertisement content elements for inclusion in a customized television advertisement generated from the television advertising template. The variable advertisement content elements can include video elements, audio elements, and text elements.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for providing television advertisements while a viewing device is tuning to a channel. In one aspect, a viewing device, in response to receiving a signal to tune to a channel, selects advertisement data for an advertisement from a data storage device storing advertisement data for one or more advertisements, and generates a video signal when tuning to the channel, the video signal generated only for the duration that the viewing device is tuning to the channel and for displaying on the television device, and the video signal causing the advertisement to be displayed on the television device.