Interactive video distribution systems – Operator interface – To facilitate tuning or selection of video signal
Reexamination Certificate
2006-10-10
2006-10-10
Miller, John (Department: 2623)
Interactive video distribution systems
Operator interface
To facilitate tuning or selection of video signal
C725S040000, C725S044000, C725S045000, C725S049000, C725S050000, C725S052000, C725S053000, C725S134000, C725S139000, C725S142000
Reexamination Certificate
active
07120923
ABSTRACT:
Electronic television program guide information is downloaded, stored and searched by a local device. A plurality of linked lists are used to remove redundancy, increase search speed, and allow dynamic categories. When a new category is encountered a new head node for a link list data structure is created. When a first program guide object containing information related to that category is downloaded, a link is made (i.e., a pointer is stored) from the head node to the guide object. When subsequent program guide objects containing information related to that category are downloaded, links are added to the end of the list or inserted in alphabetical order. As guide objects expire the links are removed. When no links remain in a particular category the head node for that category is deleted.
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Arsenault Robert G.
Leminh Tam T.
Seibert Kenneth D.
Hoye Michael W.
Miller John
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