Changtai Liang

US Patent:

20060139487, Jun 29, 2006

Filed:

Dec 29, 2004

Appl. No.:

11/025023

Inventors:

Changtai Liang - Sunnyvale CA, US
Shijun Deng - San Jose CA, US

International Classification:

H04N 11/00

US Classification:

348468000

Abstract:

Teletext engines configured for specific tasks. One such Teletext engine indexes the page numbers of incoming Teletext pages, along with the addresses at which they are stored in the TV's memory. This index essentially provides a list of stored Teletext pages and their corresponding locations in memory, sorted by page number. In one embodiment, this list is sorted in numerical order of page number, and in another embodiment, the list is sorted according to the order in which the TV receives pages. When the TV is to display a particular Teletext page number, it simply checks the index to find the corresponding address. Armed with this address, the TV can quickly retrieve the correct Teletext page from memory, as it can simply look up the correct address without first conducting a laborious search of the entire memory. Page retrieval times can thus be reduced significantly.