Patent ID: 7660477
Filing Date: 2010-02-09
Classification: G09G

Abstract:
1. A method of correcting image data for the presence of a ghost image, the image data being for acceptance by a device that includes a finite-thickness element with a partially reflecting surface that reflects incident light and passes through some of the incident light to provide a reflection of an image for display, the ghost image being a shifted and attenuated version of the image data, the method comprising: accepting the image data; processing the image data to produce processed image data, the processing including subtracting a first correction term from the image data, the first correction term being a shifted and attenuated version of the image data, the shift being the same as that between the image data and the ghost image, and the attenuation matching the attenuation of the ghost image caused by the device; and providing the processed image data to the device, such that, for a small enough attenuation of the ghost image, substantially no ghost image of the image data is displayed by the device.