| abstract |
An apparatus identifies a program selected for reception on a monitored receiver. The monitored receiver has a receiver output, and the selected program is one of a plurality of receivable programs. The apparatus includes a tuner and demodulator arranged to receive a predetermined one of the programs. A first feature extractor extracts a first set of characteristic features from the receiver output. A second feature extractor extracts a second set of characteristic features from the predetermined program. A comparator compares the first and the second sets of characteristic features. A code extractor extracts a program identifying code from the predetermined program if the first and the second sets of characteristic features match. |