Variable Speed Swept Volume Display for 3D Image Rendering

The patent applies dynamics by transitioning from constant screen movement speed to variable speed control. The screen moves at a first speed when positioned at slice locations to allow proper rendering, and at a second, faster speed when positioned between slice locations. This dynamic speed adjustment eliminates image tearing and shearing while maintaining frame rate, directly resolving the contradiction between image quality and processing complexity.

The patent implements periodic action through cyclic speed variation during screen movement. The screen alternates between a slower speed at slice locations (enabling high-quality rendering) and a faster speed between slices (maintaining frame rate). This periodic speed modulation ensures that sufficient time is spent at each slice location for proper rendering while the faster traversal between slices compensates to maintain overall frame rate productivity.

The patent applies local quality by implementing different movement speeds in different spatial zones during screen traversal. Specifically, the screen moves at a reduced first speed when located at slice locations where image rendering occurs, minimizing movement-induced distortion. Between slice locations, the screen moves at a faster second speed to maintain frame rate. This localized speed differentiation ensures high rendering quality at critical positions while maintaining overall productivity.