| 摘要 |
Methods and systems for enhancing the storage and display of video data and other digital content in a set-top box or other television environment so that such data is securely stored and displayed are provided. Example embodiments provide an enhanced display controller (EDC) that executes in an electronic device, such as a set-top box, to provide secure storage and playback of streamed digital content. The EDC creates or identifies a secure storage location and stores the data stream in that secure location in a secure manner, thereby minimizing unauthorized access. In addition, the EDC supports the secure display of the data stream using standard (or proprietary) encryption techniques, and/or obfuscation techniques. The EDC also optionally supports various requirements for complying with the usage limitations typically associated with DRM data content. In one embodiment, the enhanced display controller is a modified set-top display (device) driver that includes a VBI decoder, mechanisms (e.g., code) for securely storing and retrieving digital content, a display obfuscation/encryption mechanism, and a secure data repository. Methods and systems for displaying dynamic, floating graphics using an EDC are also provided. These graphics may be used to as interfaces to invoke the secure storage and playback mechanisms of the EDC and to navigate through display spaces presented on the television display.
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