Patent ID: 8120643

Claim:
A video signal processing apparatus comprising: an image generation module configured to convert an input video signal to first and second divided signals to be displayed in first and second areas on one screen; and first and second divided signal controllers configured to receive the first and second divided signals, adjust the signals to be signals for display, and output the adjusted signals to a display unit, wherein the first and second divided signal controllers comprise first and second frame memory groups to sequentially store divided signals for a plurality of frames, wherein the first divided signal controller comprises a preparation-complete detection module configured to determine whether video signals for the left and right eyes that are input last to the first frame memory group are prepared to output or not prepared to output, and wherein a first output selection module configured to change a memory selection state for reading the video signals for the left and right eyes from the first and second memory groups, based on the determination indicating whether the preparation for output is complete or not complete.