| 摘要 |
A method for transmitting content (12) via a digital video interface (15) using a high-bandwidth digital content protection system (50). The content (12) has a first format in a first state, a second format in a second state, and vertical blanking intervals associated therewith. In the first state, the method includes: authenticating (302) that the receiver (25) is licensed to receive the content, signaling (304) that the content will be encrypted, and transmitting (306) the encrypted content in the first format. A transition of the content from the first format to the second format is detected (308), and the encrypted content continues (310) to be transmitted in the first format. In the second state, the method includes: signaling (312) that the content will be unencrypted, adjusting (314) the transmitter to transmit in the second format, waiting (316) for the receiver to identify a vertical blanking interval, signaling (318) that the content will be re-encrypted, and transmitting (320) the re-encrypted content in the second format. |
