Renaissance Learning, Inc.
|Renaissance Learning, Inc. Patent applications|
|Patent application number||Title||Published|
|20090232419||SYSTEM FOR DETECTING MARKINGS - A marking detection system detects markings on a printed medium, such as pencil markings in bubbles on the printed medium. The marking detection system includes a circuit board with a plurality of components thereon, including an optical subsystem and an electronic subsystem including circuitry. The marking detection system further includes a shroud for optically isolating a plurality of emitting and detecting elements of the system.||09-17-2009|