Abstract: A tactile user interface device that allows a user to manipulate the graphical elements of a graphical user interface and provides tactile feedback to the user. The interface device comprises a substrate and a plurality of tactile elements. Each tactile element of the tactile user interface device comprises a means for sensing pressure from a user's finger to determine if the user has depressed the tactile element and a means for conveying tactile feedback information to the user. Tactile feedback information may be elevations, vibrations, textures, and temperatures.

Abstract: A compact antenna assembly which includes a lower member having a mast that is an elongated configuration terminating at an upper end and a lower end. The mast can be located at the center of an upper member. The upper member includes an emitter, having a perimeter, a top end, and a bottom end. The upper end of the mast is electrically connected to the perimeter near the top end. Furthermore, a collector with a centrally disposed opening can be placed in a horizontal plane which positions the collector orthogonally in space with respect to the mast so that the collector is electrically insulated from the emitter and the mast. The lower end of the mast is centered at the centrally disposed opening of the collector and extends perpendicularly to the plane of the collector.