The rendering engine acquires via the path those of the pattern data identified as being required to render the image.

By including with the frames reference data defining the sequence in which the tiles must be assembled to reproduce the image, a reproduction of the original image can be created from the video frames.

The requirement of checkpoint 3.1 to allow the user to turn off rendering of background images does not extend to multi-layered rendering.

A video camera for example serves as an image signal source at the transmission end whilst a conventional television receiver is used to reproduce the images at the other end.

To retrieve the image that is 'stored' in the liquid crystal film (10), the liquid crystal material is illuminated with a monochromatic optical beam.

The dynamic range provides the correct width and the stereo image is above average.

With certain liquid crystal films (10), reapplication of the dc potential (20) combined, application of the optical illumination results in retrieval of the stored optical image.