Display Controller Prioritizes Audio Device Wake-Up Sequence

The patent applies preliminary action by identifying and prioritizing the audio device for activation before other external devices. The controller determines which external device is an audio device and sends a power-on command to the audio device first, then subsequently sends power-on commands to other external devices. This sequential approach with prioritization reduces the overall time for the display apparatus to enter the power-on state while ensuring all necessary devices are activated.

The patent applies local quality by treating different external devices differently based on their type and function. Specifically, the controller identifies audio devices among the multiple external devices and applies a different wake-up strategy to audio devices compared to other devices. This differentiation simplifies the management complexity by creating a clear priority rule: audio devices are activated first, followed by other devices, rather than managing all devices uniformly.

The patent applies segmentation by dividing the external devices into distinct groups based on their type. Audio devices are segmented as a separate category from other external devices. This segmentation allows the controller to manage power activation in a structured manner: first activating audio devices, then activating other devices. This approach maintains activation speed while reducing power management complexity through clear categorization and sequential handling of device groups.