Patent ID: 7358474
Filing Date: 2008-04-15
Classification: G11C,H04N

Abstract:
1. A system comprising: an optical arrangement configured to view a scene that includes an object, wherein the scene is configured to move through a field of view of the optical arrangement during each of a plurality of transit periods; an assembly including a plurality of detectors arranged in a vertical scanning direction corresponding to a direction of movement of the scene, wherein the detectors of the assembly are separately configured to produce an image of the object for each transit period in accordance with a time-delay integration technique; and a signal processor configured to determine an angular position of the object for each transit period based upon the images produced by the detectors, wherein the detectors of the assembly are arranged such that, when an error is introduced in the system, the detectors separately experience at least a portion of the error, and the signal processor is configured to reduce the error by averaging out the portions of the error experienced by the respective detectors, and wherein the detectors of the assembly are arranged such that, when the error introduced in the system comprises a fixed pattern error, the fixed pattern error is uncorrelated from detector to detector to thereby introduce diversity in the fixed pattern error over the assembly.