In one embodiment, a delay circuit is configured to delay pixel information from an image source, such as a frame buffer. The delay circuit may be configured to delay the pixel information by an amount of time that would move a pixel projected on a surface by a distance less than a dimension of the pixel....http://www.google.com.au/patents/US6967758?utm_source=gb-gplus-sharePatent US6967758 - System and method for sub-pixel electronic alignment