Patent ID: 7266413
Filing Date: 2007-09-04
Classification: A61N,G06T

Abstract:
1. A method for increasing the perceived visual acuity between a high resolution video input device and a low resolution retinal prosthesis comprised at least in part of an array of stimulation electrodes, wherein said high resolution device inputs an image of higher resolution than the number stimulation electrodes in said retinal prosthesis, said method comprising the steps of: inputting a high resolution video input as an array of pixels; associating a subset of at least one input pixel with each stimulation electrode; periodically driving each stimulation electrode with a signal corresponding to its at least one associated input pixel; and periodically driving pairs of neighboring electrodes with signals associated with at least one input pixel to generate virtual electrode signals at locations physically displaced from said stimulation electrodes, whereby the perceived visual acuity is increased.