Method and apparatus for using closed captioning data to...

Details Method and apparatus for using closed captioning data to... Method and apparatus for using closed captioning data to...

2005-03-24

2009-02-17

Tran, Thai (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

Reexamination Certificate

active

07493021

ABSTRACT:
A television video recorder controlled by a viewer automatically compares a closed captioning stream from a current program instance with one or more respective closed captioning streams associated with previously recorded program instances to determine whether the current instance matches a previously recorded instance. If the closed captioning streams match, it is assumed that the current instance is a duplicate of a previously recorded instance, and the video recorder automatically takes an appropriate action with respect to recording at least one program instance. Preferably, one of the program instances is automatically deleted, so that there are no duplicates. Alternatively, the recorder might delete or mark from the saved program instance any portions thereof which do not match corresponding portions of a duplicate program instance, on the assumption that such portions are commercial advertisements.

REFERENCES:
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patent: 5561457 (1996-10-01), Cragun et al.
patent: 5859662 (1999-01-01), Cragun et al.
patent: 6430357 (2002-08-01), Orr
patent: 6901207 (2005-05-01), Watkins
patent: 7046914 (2006-05-01), Jasinschi et al.
patent: 2003/0154493 (2003-08-01), Kagle et al.

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