Interactive video distribution systems – Access control or blocking – Of specific program
Reexamination Certificate
2006-05-12
2009-06-16
Corsaro, Nick (Department: 2617)
Interactive video distribution systems
Access control or blocking
Of specific program
C725S050000
Reexamination Certificate
active
07549155
ABSTRACT:
A digital television signal includes for use in a digital television receiver includes a rating region table carrying rating information for multiple geographical regions. The rating region table includes a version number field defining a version number of the rating region table which increments by 1 modulo 32 when any field in the rating region table changes, and an extended version number field defining an extended version number which specifies a number of times the version number of the rating region table. A combination of the version number and the extended version number indicates a total number of changes made in the rating region table, and it can be used by the digital television receiver when determining whether the rating region table is a newly-updated table. The extended version number field may be included in a table ID extension field within the rating region table which serves to establish uniqueness of the rating region table.
REFERENCES:
patent: 5663616 (1997-09-01), Stringfellow et al.
patent: 5828402 (1998-10-01), Collings
patent: 2005/0166227 (2005-07-01), Joshi
Advanced Television Systems Committee (ATSC) Document A/69: ATSC Recommended Practice: Program and System Information Protocol Implementation Guidelines for Broadcasters, Jun. 25, 2002, http://www.atsc.org/standards/a—69.pdf.
“Downloadable U.S. Region Rating System White Paper,” Consumer Electronics Association, Dec. 15, 2005, 7 pages.
“U.S. and Canadian Rating Region Tables (RRT) and Content Advisory Descriptors for Transport of Content Advisory Information using ATSC Program and System Information Protocol (PSIP),” ANSI/CEA Standard, ANSI/CEA-766-C, Apr. 2008, Consumer Electronics Association, 16 pages.
Corsaro Nick
LG Electronics Inc.
McKenna Long & Aldridge LLP
Sternbane Larry
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