Hyper video: information retrieval using multimedia
First Claim
1. A method for finding documents which relate to a portion of a temporal document, comprising:
- (a) in response to a signal of interest at a particular time during the temporal document, identifying a portion of the temporal document occurring during a time interval before said signal of interest;
(b) selecting text associated with the portion of the temporal document identified, by reference to a database wherein is stored each term in text associated with the temporal document, together with a time in the temporal document at which the term occurs;
(c) for a first term in the selected text, determining a first weight based on;
a function W(t) associated with said time interval, and the time in the temporal document at which said first term occurs, wherein W(t) is equal for all times between t1 before the signal of interest is given and t2 before the signal is given, and decreases from t1 until the time of the signal, and increase from a time t3 before the signal is given to the time t2, and is zero for all other times;
(d) identifying the related documents by use of information retrieval techniques as applied to said first term and said first weight.
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Accused Products
Abstract
Disclosed is a method and device for selecting documents, such as Web pages or sites, for presentation to a user, in response to a user expression of interest, during the course of presentation to the user of a document, such as a video or audio selection, whose content varies with time. The method takes advantage of information retrieval techniques to select documents related to the portion of the temporal document in which the user has expressed interest. The method generates the search query to use to select documents by reference to text associated with the portion of the temporal document in which the user has expressed interest, as by using the closed caption test associated with the video, or by using speech recognition techniques. The method further uses a weighting function to weigh the terms used in the search query, depending on their temporal relationship to the user expression of interest. To conserve resources, the method does not transmit the closed caption or other synchronized multimedia information to the user, and obtains the necessary information about the temporal occurrence of terms in the temporal document from a database.
83 Citations
28 Claims
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1. A method for finding documents which relate to a portion of a temporal document, comprising:
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(a) in response to a signal of interest at a particular time during the temporal document, identifying a portion of the temporal document occurring during a time interval before said signal of interest;
(b) selecting text associated with the portion of the temporal document identified, by reference to a database wherein is stored each term in text associated with the temporal document, together with a time in the temporal document at which the term occurs;
(c) for a first term in the selected text, determining a first weight based on;
a function W(t) associated with said time interval, and the time in the temporal document at which said first term occurs, wherein W(t) is equal for all times between t1 before the signal of interest is given and t2 before the signal is given, and decreases from t1 until the time of the signal, and increase from a time t3 before the signal is given to the time t2, and is zero for all other times;
(d) identifying the related documents by use of information retrieval techniques as applied to said first term and said first weight. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 26, 27, 28)
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15. A device for finding documents which relate to a portion of a temporal document, comprising:
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(a) means for identifying a portion of the temporal document, in response to a signal of interest at a particular time during the temporal document, said portion of the temporal document occurring during a time interval before said signal of interest;
(b) mean for selecting text associated with the portion of the temporal document identified, by reference to a database wherein is stored each term in text associated with the temporal document, together with a time in the temporal document at which the term occur;
(c) for the first term in the selected text, means for determining a first weight based on;
a function W(t) associated with said time interval, and the time in the temporal document at which said first term occurs, wherein W(t) is equal for all times between t1 before the signal of interest is given and t2 before the signal is given, and decreases from t1 until the time of the signal, and increases from a time t3 before the signal is given to the t2 and is zero for all other times;
(d) means for identifying the related document by use of information retrieval techniques as applied to said first term and said first weight. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification