Patent ID: 7652241
Filing Date: 2010-01-26
Classification: G09G

Abstract:
1. A system for timing an image acquisition, comprising: a source controller triggering an optical source to illuminate a target during an on-time period; a delay block coupled to the source controller, imposing a delay interval starting at the triggering of the optical source, the delay block triggering an image acquisition at the end of the delay interval, wherein after the image acquisition the source controller turns both the optical source and the image acquisition off, so that the on-time period of the optical source is longer than an on-time period of the image acquisition, and the delay interval defines an optical charge pulse that provides light to a sensor prior to triggering the image acquisition, wherein the optical charge pulse charges the sensor to compensate for dark current discharge in the sensor, and the sensor provides the image acquisition, and endings of the on-time period of the optical source and the on-time period of the image acquisition occur simultaneously.