A system for identifying a work represented by digital data. This system detects events in data of the content of an unknown work and measures a metric between the events. The system then compares the detected events and metrics from an unknown work with the events and metrics of a known work. If the...http://www.google.com.au/patents/US8006314?utm_source=gb-gplus-sharePatent US8006314 - System for identifying content of digital data
