Patent attributes
A signal having a segment is received into a first device, and a segment is sampled before a predetermined match range to determine a first on or off status of the segment. A determination is made whether the first on or off status of the segment matches a first predetermined desired status and, if not, the decoding of the signal is terminated. The segment is sampled during the predetermined match range with circuitry to determine a second on or off status, and a determination is made whether the second on or off status of the signal matches the second predetermined desired status and, if so, causing the first device to perform a predetermined function with respect to a second device and, if not, terminating the decoding of the signal.