Smart Magic Cube Wake-Up Using Low-Power Acceleration Sensing

The patent extracts the wake-up detection function from the main control unit and implements it in a separate low-power wake-up control unit. This dedicated unit only monitors acceleration via the accelerometer, consuming minimal power, while the main control unit remains in deep sleep mode with its IO port monitoring disabled. The separation allows responsive wake-up detection without the power cost of full system monitoring.

The patent introduces an accelerometer as an intermediary device between the user's rotation action and the control system. Instead of directly monitoring IO ports for rotation events, the system uses the accelerometer to detect acceleration changes caused by rotation, then triggers the wake-up process. This intermediary approach enables indirect detection with much lower power consumption than direct IO monitoring.

The patent performs preliminary action by continuously monitoring acceleration in the background at low power during dormancy state. The wake-up control unit is kept in a ready state with the accelerometer actively detecting motion, so when the user rotates the cube, the system is already prepared to wake up immediately without requiring additional user actions or suffering delays.

The patent replaces the mechanical interaction-based wake-up method (requiring user to rotate a specific face to trigger wake-up) with an accelerometer-based detection system. The accelerometer detects any acceleration event causally linked to user interaction, automatically triggering wake-up without requiring specific mechanical actions from the user, thus eliminating wake-up delay while maintaining low power consumption.