Patent ID: 8155202

Claim:
A method for encoding a scrolling element so the scrolling element can be scrolled through a scrolling region in accordance with path information, without searching for a reference frame or a reference macroblock, the method comprising: standard encoding the scrolling element for at least one frame; and for at least one subsequent frame: calculating a location for the scrolling element based on the path information; determining, based on the path information, at least one motion vector that references a previously-encoded frame; and encoding the scrolling element using the least one calculated motion vector, wherein calculating the location for the scrolling element comprises calculating an X coordinate, within the subsequent frame, of the scrolling element according to the formula: X=X (previous)+(speed×delta frame number), where: X(previous) represents an X coordinate at which the scrolling element was displayed in the previously-encoded frame; speed represents a speed of the scrolling element; and delta frame number represents a difference between the subsequent frame and the previously-encoded frame.