Patent ID: 6374404
Filing Date: 2002-04-16
Classification: H04N

Abstract:
In a digital television system, a method of displaying information comprising the steps of:a) maintaining an intelligent filter that records hypertext documents that were previously accessed by a viewer of said digital television system; b) monitoring datacast information decoded from a digital television broadcast signal to identify newly received hypertext documents. said step b) comprising the steps of: b1) tuning a tuner to a selected channel within said digital television broadcast signal and receiving datacast information therefrom for a time period: b2) identifying newly received hypertext documents from said datacast information of said step b1): b3) provided said time period expired, updating said selected channel and initializing said time period: and b4) repeating said steps b1)-b3); c) storing into a cache memory any of said newly received hypertext documents that are recorded in said intelligent filter; d) receiving, from a viewer, an identifier of a selected hypertext document; and e) provided said selected hypertext document is located within said cache memory, accessing said selected hypertext document from said cache memory and displaying said selected hypertext document on a display screen of said digital television system.