Patent ID: 7714803
Filing Date: 2010-05-11
Classification: H04N

Abstract:
1. Method of displaying a volumetric 3D image in actual space by using a volumetric 3D display based on a projector system, said projector system comprising a spatial light modulator as image source, the method including steps of: (1) providing a set of frames of image data to be projected by the projector system to form the volumetric 3D image; (2) dividing the pixels of the spatial light modulator into a number of groups and defining each group as a sub-panel; (3) projecting the images of the sub-panels and recombining and superimposing them into one picture frame; the method further including improvements for the display and the projection of sub-frames at an effective frame rate that can be higher than the full frame rate of said spatial light modulator, said improvements requiring neither the need of modulation of the light source of projection nor the need of switchable color filters, said sub-frame being defined as one frame of image data being displayed on one said sub-panel, herein said display of sub-frames meaning only the display of image on said sub-panel as a result of data writing to said spatial light modulator, said improvements including steps of: (4) applying a data writing method in order to display said frames of image data at an effective frame rate that can be higher than the full frame rate of said spatial light modulator, the data writing method writing data to said sub-panels by turns so that the written data can be displayed on said sub-panels in a fashion such that at any time only one sub-panel displays one frame of said frames of image data and the rest of the sub-panels display blank or black, the step of writing data to sub-panels by turns including writing said frames of image data in sequence to each of the sub-panels in a fixed order and erasing the written data on a sub-panel that has been displayed before the next sub-panel displays data, herein said display of sub-frames meaning only the display of image on said sub-panel as a result of data writing to said spatial light modulator; (5) projecting said sub-frames in their displayed sequence and showing each projected sub-frame at a different and pre-determined location in actual space to form the volumetric 3D image.