| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for accurately identifying monitored media within a prescribed time period in media monitoring using multiple types of signatures.SOLUTION: A method comprises: processing signatures of a first type to monitor media presented by a media device until it is determined that a first one of the signatures of the first type matches a reference signature of the first type, the reference signature of the first type being associated with first reference media; and processing signatures of a second type to monitor the media presented by the media device after it is determined that the first one of the signatures of the first type matches the reference signature of the first type and until it is determined that a number of signatures of the second type do not match corresponding reference signatures of the second type, the reference signatures of the second type being associated with the first reference media. |
