System and method for delivering targeted advertisements using multiple presentation streams

A method of delivering presentation streams carrying targeted advertisements to subscribers in a switched television service network environment, the method comprising:

• (a) defining a plurality of market segments;
• (b) generating a set of presentation streams corresponding to a programming channel having programming data, each of the presentation streams in the set corresponding to a different one of the plurality of market segments, each of the presentation streams in the set carrying the same programming data as the programming channel and at least one advertisement directed to the market segment to which the presentation stream corresponds, wherein the presentation streams are generated independent of a request for the programming channel by the subscribers;
• (c) simultaneously delivering the set of presentation streams to a switching device;
• (d) receiving at the switching device a first request for the programming channel from a first subscriber in a first market segment;
• (e) switching a first presentation stream corresponding to the first market segment from the set of presentation streams to the first subscriber;
• (f) receiving at the switching device a second request for the programming channel from a second subscriber in a second market segment;
• and
• (g) switching a second presentation stream corresponding to the second market segment from the set of presentation streams to the second subscriber.