DISC SPIN SPEED PROFILE FOR AN OPTICAL DISC

摘要

Creating a disc spin speed profile allows the player to store this disc spin speed profile and control disc spin speed based on this disc spin speed profile, simplifying the disc spin speed adjustment. Instead of using a Constant Linear Velocity profile matched to the highest data rate prescribed by the standard, the playback device can establish its own disc spin speed profile that is adapted to the data rate requirements as they vary across the record carrier. Starting the disc spin speed profile with a Constant Angular Velocity part, followed by a Constant Linear Velocity part reduces the disc spin speed at zones at the innermost of the disc, reducing noise and energy consumption.