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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0876578 (1992-04-30) |
| 발명자 / 주소 |
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| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 407 인용 특허 : 0 |
Broadcast segment recognition systems and methods are provided in which a signature representing a monitored broadcast segment is compared with broadcast segment signatures in a data base representing known broadcast segments to determine whether a match exists. Criteria for determining the validity
Broadcast segment recognition systems and methods are provided in which a signature representing a monitored broadcast segment is compared with broadcast segment signatures in a data base representing known broadcast segments to determine whether a match exists. Criteria for determining the validity of such a match are provided. In addition, signatures characterizing respective intervals of a broadcast signal exhibiting correlation are produced by generating a difference vector for each respective interval and carrying out vector transformations of the different vectors to reduce such correlation. Also, a broadcast segment recognition data base is updated by monitoring a broadcast signal to detect signal events indicating possible broadcast segments of interest in which at least two alternative segments of interest are detected by assigning priority to one of the two segments based upon predetermined criteria. A signature characterizing a broadcast signal interval is produced including a plurality of digital words each characterizing a respective sub-interval thereof by selecting at least one such digital word based on predetermined digital word distribution criteria, match probability and a degree of signal difference between the respective sub-interval and adjacent portions of the signal.
A method of broadcast segment recognition, comprising the steps of: producing a signature for each of a plurality of broadcast segments to be recognized; storing each said signature to form a database of broadcast segment signatures; monitoring a broadcast segment; forming another signature represen
A method of broadcast segment recognition, comprising the steps of: producing a signature for each of a plurality of broadcast segments to be recognized; storing each said signature to form a database of broadcast segment signatures; monitoring a broadcast segment; forming another signature representing the monitored broadcast segment; comparing the another signature representing the monitored broadcast segment with at least one of the broadcast segment signatures of the database to determine whether a match exists therebetween; and evaluating the validity of the match of the monitored broadcast segment by carrying out at least one of: (a) determining whether the monitored broadcast segment is temporally bounded by predetermined signal events; (b) determining whether the monitored broadcast segment overlaps another monitored broadcast segment for which a match has been accepted in accordance with predetermined criteria; (c) determining whether the match conforms with a predetermined profile of false matching segments; and (d) determining whether the monitored broadcast segment is temporally bounded on at least one boundary of the monitored broadcast segment by a predetermined signal event.
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