Video Detection and Insertion
First Claim
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1. A method for video detection comprising:
- (a) receiving an input video signal;
(b) creating a temporal sliding window of initial length L seconds, and capturing at least a first portion of the input video signal with the temporal sliding window;
(c) comparing a first segment of the first portion of the input video signal captured by the temporal sliding window of initial length L seconds to a portion of stored fingerprint data;
(d) expanding the temporal sliding window to have an expanded length approximately equal to the length of the stored fingerprint data if the first segment of the first portion of the input video signal matches the portion of stored fingerprint data; and
(e) comparing a second segment of the input video signal captured by the expanded window having the expanded length with the stored fingerprint data.
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Abstract
A television signal substitution system that replaces known video segments such as advertisements with selected replacement advertisements. Fingerprint data of known advertisements can be stored in a fingerprint database. When new fingerprint data is available, the fingerprint data can be automatically or manually transmitted to subscribers. Various techniques can be used to identify advertisements based on the fingerprint data.
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Citations
15 Claims
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1. A method for video detection comprising:
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(a) receiving an input video signal; (b) creating a temporal sliding window of initial length L seconds, and capturing at least a first portion of the input video signal with the temporal sliding window; (c) comparing a first segment of the first portion of the input video signal captured by the temporal sliding window of initial length L seconds to a portion of stored fingerprint data; (d) expanding the temporal sliding window to have an expanded length approximately equal to the length of the stored fingerprint data if the first segment of the first portion of the input video signal matches the portion of stored fingerprint data; and (e) comparing a second segment of the input video signal captured by the expanded window having the expanded length with the stored fingerprint data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of detecting video comprising:
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(a) receiving an input video signal; (b) capturing a first portion of the received input video signal, the captured portion having a length of L seconds; (c) comparing the first portion of the input video signal to an L second long portion of stored fingerprint data, the stored fingerprint data having a total fingerprint length greater than or equal to L seconds; (d) if the first portion of the input video signal substantially matches the portion of stored fingerprint data, capturing a second portion of the received input video signal, the second portion being contiguous with the first portion, such that a third captured portion comprising the first portion of the received input video signal and the second portion has a length that is approximately equal in length to the total fingerprint length of the stored fingerprint data; and (e) comparing the third captured portion of the received input video signal to the stored fingerprint data. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification