| US 7,398,547 B2 | ||
| High-bandwidth digital content protection during rapid channel changing | ||
| Linden deCarmo, Plantation, Fla. (US) | ||
| Assigned to Pace plc., West Yorkshire (United Kingdom) | ||
| Filed on May 19, 2004, as Appl. No. 10/847,852. | ||
| Claims priority of provisional application 60/535827, filed on Jan. 13, 2004. | ||
| Prior Publication US 2005/0154917 A1, Jul. 14, 2005 | ||
| Int. Cl. G06F 17/30 (2006.01); G06F 17/00 (2006.01) | ||
| U.S. Cl. 726—3 [726/11; 726/15] | 18 Claims |
| 1. A method for enabling a security protocol for transmission from a transmitter to a receiver during a channel change process,
comprising:
allowing the transmitter to transmit data to the receiver so as to detect whether the receiver supports the security protocol;
upon communication from the receiver to the transmitter that the receiver supports the security protocol, permitting a channel
change process to proceed;
permitting the transmitter to delay an authentication of the communication from the receiver under the security protocol until
the channel change process is completed; and
enabling the authentication after a predetermined lapse of time.
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