Abstract: A field-of-vision processing and filtering system for eliminating glare from mobile and transient light sources and reflective surfaces, using image recording, eye-position detection, and a active matrix screen functioning as a dynamically controllable visor, for modifying the field of vision appropriately. The system filters out high light intensity points from the field of vision, without seriously affecting the relevant parts of the field of vision. One embodiment of the system can be used by drivers for filtering glare from oncoming headlight at night, as well as during day time to block glare from the sun. Another embodiment of the system can be used for protection from glare of welding iron in a machine shop.

Abstract: A user tracking system includes a first unit and a second unit. The first unit includes a first radio transceiver and a first printed circuit board that includes microprocessor circuitry and modem circuitry. The second unit includes a second radio transceiver and an enclosure enclosing a GPS antenna, a GPS receiver, and a second printed circuit board comprising microprocessor circuitry and modem circuitry.