Abstract: A technique for multi-level ad insertion may include and/or involve identifying a device that provided an indication of an ad break in a program stream, attempting to select one or more ads particular to a region or regions served by the device, and if an ad or ads particular to a region or regions served by the device is selected, causing the ad or ads to stream to the device; otherwise, providing an indication to the device that the ad break should be retained in the program stream.

Abstract: A method may include and/or involve identifying a received signal as an indication that advertising content should be provided, determining ad content to provide in response to the signal, specifying a playlist file as a file to provide the ad content, the playlist file including identifications of multiple digital content files including the ad content, and streaming the multiple content files as a Single Program Transport Stream.

Abstract: System and method for compensating for even order and odd order nonlinear distortion in a single by introduction of a compensating signal that removes substantially all of the nonlinear distortion in one order or in two orders. Two or more diodes are arranged in at least one of an anti-series configuration and an anti-parallel configuration in which a circuit voltage is equal to a selected odd order and/or to a selected even order in current, plus higher order terms that are often negligible. The diodes may be replaced by other selected nonlinear devices.