Abstract: An ion source for generating an ion beam of primary ions is disclosed that includes a plasma chamber and magnets positioned therein for separating the primary ions of the plasma from secondary ions within the plasma. An electrode assembly extracts the primary ions through an extractor outlet port of the plasma chamber to form an ion beam, which preferentially is shaped as a ribbon beam. The primary ions are accelerated in the form of a ribbon beam toward the target workpiece for doping the device. The magnets are oriented in the chamber to produce a uniform current density of primary ions parallel to the elongated axis of the ribbon beam.

Abstract: This invention discloses a system for forming improved digitized stereoscopic polarizing images having reduced ghost images by utilizing digital imaging systems and ink jet printers. Stereoscopic polarizing images comprising a first polarizing sheet imprinted with a first image and a second polarizing sheets imprinted with a negative of the first image and a second image are stereoscopically aligned such that the negative of the first image reduces ghost images produced by the first image. The images in the first polarizing sheet and in the second polarizing sheet can be efficiently produced and modified using digital imaging systems and ink jet printer technology.

Abstract: Apparatus for determining the location of a signal-generating source (e.g., a conferee in a telephone conference) includes at least three sensors (e.g., microphones) arranged in a plurality of sets, each having two or more sensors. A surface-finding element responds to receipt at each sensor set of signals (e.g., speech) from the source for identifying a geometric surface (e.g., the surface of a hyperboloid or cone) representing potential locations of the source as a function of sensor locations and time difference of arrival of the signals. A location-approximating element coupled to two or more of the sets identifies a line that further defines potential source locations at the intersection of the surfaces. A location signal representing those potential locations is generated in accord with parameters of that line. Further functionality generates generating the location signal as a function of closest intersections the plural ones of the aforementioned lines.