High-bandwidth digital content protection during rapid channel changing
View Patent ↗A method and apparatus are disclosed for providing High-Bandwidth Digital Content Protection during a channel change process. The method and apparatus include detection of High-Bandwidth Digital Content Protection capability on a receiver during an interface event. High-Bandwidth Digital Content Protection authentication is delayed for a predetermined time period to allow the channel change process to stabilize. The invention reduces a performance penalty associated with the channel change process.
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.
2. The method of claim 1 , further comprising using a hot-plug event to detect whether the receiver supports the security protocol.
3. The method of claim 2 , wherein the hot-plug event is a Digital Video Interface hot-plug event, and further comprising determining whether a Digital Video Interface is connected.
4. The method of claim 1 , further comprising displaying a first warning message if the receiver does not support the security protocol.
5. The method of claim 1 , further comprising allowing the channel change process to proceed without the security protocol.
6. The method of claim 1 , further comprising initiating a timer during the channel change process.
7. The method of claim 6 , further comprising enabling the authentication after the timer has reached the predetermined lapse of time.
8. The method of claim 1 , further comprising indicating a second warning when communication is lost with the receiver.
9. The method of claim 1 , wherein the receiver includes a display.
10. The method of claim 1 , further comprising restarting the authentication if secure communication is lost after the channel change process.
11. The method of claim 1 , wherein the security protocol comprises High-Bandwidth Digital Content Protection.
12. A system for providing a security protocol during rapid channel changing utilizing a Digital Video Interface event as a starting point, the system comprising:
a detector for detecting whether a display supports the security protocol; and
a controller in communication with the detector for:
(i) permitting a channel change process upon detection that the display supports the security protocol;
(ii) delaying an authentication under the security protocol until the channel change process is completed; and
(iii) enabling the authentication after a predetermined lapse of time.
13. The system of claim 12 , further comprising a timer utilized in delaying the authentication.
14. The system of claim 12 , wherein the controller uses a Digital Video Interface event as a starting point, and wherein the Digital Video Interface event includes a connection of a Digital Video Interface.
15. The system of claim 12 , further comprising a display controlling device for displaying a plurality of warning messages when the security protocol is required and not available.
16. The system of claim 12 , wherein the security protocol comprises High-Bandwidth Digital Content Protection.
17. The method of claim 2 , wherein the hot-plug event is a High-Definition Multimedia Interface hot-plug event, and further comprising determining whether a High-Definition Multimedia Interface is connected.
18. The system of claim 12 , wherein the controller uses a High-Definition Multimedia Interface event as a starting point, and wherein the High-Definition Multimedia Interface event includes a connection of a High-Definition Multimedia Interface.