Abstract: A device includes a digitizer in communication with a touch sensor and configured to generate touchscreen data indicative of an ink stroke, a processor configured to generate image data for rendering on a display panel, and a display controller configured to receive the image data and to generate pixel control signals for the display panel from the image data. The display controller includes a memory to store frame data derived from the image data by the display controller, and an ink rendering engine configured to generate ink image data from the touchscreen data while the processor resides in a sleep mode. The ink rendering engine is coupled to the memory to store the ink image data in the memory as the frame data such that the pixel control signals direct the display panel to render the ink stroke while the processor remains in the sleep mode.

Abstract: A device includes a digitizer in communication with a touch sensor and configured to generate touchscreen data indicative of an ink stroke, a processor configured to generate image data for rendering on a display panel, and a display controller configured to receive the image data and to generate pixel control signals for the display panel from the image data. The display controller includes a memory to store frame data derived from the image data by the display controller, and an ink rendering engine configured to generate ink image data from the touchscreen data while the processor resides in a sleep mode. The ink rendering engine is coupled to the memory to store the ink image data in the memory as the frame data such that the pixel control signals direct the display panel to render the ink stroke while the processor remains in the sleep mode.

Abstract: In order to establish connections between a presentation device and a display device, the presentation device is plugged into the display device using a wired video connection. The presentation device sends to the display device via a wired video connection a request for information regarding how to connect to the display device via a network. The display device returns the requested information, and the presentation device uses the received information to establish a network connection to the display device. After establishing the network connection to the display device, the presentation device continues to send video to the display device via the wired video connection. The display device displays the video received from the presentation device, and also receives user inputs at the display device. Data describing these user inputs are sent to the presentation device via the network connection for processing.