Method and apparatus for controlling a stereo video display with non-stereo video source

A method for controlling a stereo video display with non-stereo video source, comprising the steps of:

• calculating, in relation to a current frame of the non-stereo video source, a next overall motion direction of a next frame of the current frame;
• comparing the next overall motion direction with a previous overall motion direction of a previous frame of the current frame;
• and
• according to a result of the comparing step, determining a corresponding relation between the current and the next frames and dextral and sinistral images of a stereoscopic image, wherein the step of determining the corresponding relation is carried out by changing addresses to write the current frame and the next frame into the memory.

A computer system comprising:

• a decoder for generating, from the non-stereo video source, a current frame, a previous frame of the current frame, and a next frame of the current frame that is in preparation, the current frame and the previous frame are for a dextral image and a sinistral image of a stereoscopic image respectively;
• a memory for storing the current frame, the previous frame and the next frame;
• a memory controller for controlling data accessing and transferring in the memory;
• a read/write controller for controlling addresses to write the current frame and the next frame in the memory, and reading order of the current frame and the previous frame;
• and
• a motion analyzer for calculating an overall motion direction of the next frame in relation to the current frame, and comparing the next overall motion direction with a previous overall motion direction of the current frame relative to the previous frame, in order to control the read/write controller to read from or write into the memory, so that a corresponding relation between the current and the next frames and the dextral and the sinistral images is changed when a horizontal relation between the next overall motion direction and the previous overall motion direction is changed.