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Hyper video: information retrieval using realtime buffers

  • US 6,965,890 B1
  • Filed: 10/03/2002
  • Issued: 11/15/2005
  • Est. Priority Date: 10/29/1999
  • Status: Expired due to Term
First Claim
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1. A computer implemented method for finding documents which relate to a portion of a temporal document, comprising:

  • (a) presenting a temporal document, wherein the temporal document is a time related document;

    (b) determining text associated with portions of the temporal document, and (c) storing in a buffer each term in said associated text, together with a time in the temporal document at which the term occurs;

    (d) in response to a user signal of interest at a particular time during the temporal document, identifying a portion of the temporal document that occurred during a time interval before said user signal of interest;

    (e) for a first term in said buffer occurring during said time interval, 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 time t2, and is zero for all other times;

    (f) identifying related documents by use of information retrieval techniques as applied to said first term and said first weight.

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