David P Benfey

45311811, Jul 23, 1985

Dec 22, 1982

6/452113

Harold L. Herz - Binghamton NY
Sam S. Jobes - Vestal NY
John D. Jordan - Chesapeake VA
David P. Benfey - Endicott NY
William C. Wheeler - Conklin NY

General Electric Company - Binghamton NY

H02M 3335

363 21

A high voltage power supply of the flyback type typically used in cathode ray tube displays or TV receivers operates in synchronism with the scan rate frequency of display and may either be self-synchronizing, externally synchronized, or externally directly driven. The power supply has a relatively high efficiency (75%), regulates three output voltages to within. +-. 1% against source voltage variations and regulates its highest level voltage output to within. +-. 1% against source voltage and load variations.

52992209, Mar 29, 1994

Sep 8, 1992

7/941832

David C. Brown - Brackney PA
David P. Benfey - Endicott NY

H01S 3091
H01S 3092

372 71

The present invention features a slab laser apparatus having a stable/unstable resonator. The slab laser comprises a slab-shaped medium for producing a beam of coherent light. The slab-shaped medium is physically defined by an entrance end face; a rear, exiting end face; and two oppositely disposed and substantially parallel side faces. The respective end faces of the medium are disposed along an axis defining a "p" plane; the side faces are disposed along an axis defining an plane. A light beam entering at the entrance end face of the slab-shaped medium along the "p" plane axis reflects back and forth within the slab-shaped medium via total internal reflection, exiting at the rear end face. A stable optical cavity is defined for the "p" plane, comprising a hemispherical, high reflector curvature having an finite radius of curvature, and a flat, partially reflecting, outcoupler. An unstable optical resonator is defined for the plane, which operates in a low order transverse mode.

45516570, Nov 5, 1985

Dec 10, 1981

6/329215

Gary Miller - Binghamton NY
Sam S. Jobes - Vestal NY
David P. Benfey - Endwell NY

General Electric Company - Binghamton NY

H01J 2970
H01J 2976

315399

A CRT display is provided with a multiple-pole, double-throw switching mechanism, which in conjunction with alternate circuitry provides a means for easily reconfiguring the CRT display presentation. By operating the switches the normal left to right, the top to bottom raster scan may, for example, become a bottom to top, left to right raster scan. When applied to a multicolor CRT display, a second multiple-pole, double-throw switching mechanism serves, upon operation, to redirect beam convergence signals in compliance with the reconfigured format effected by switching the deflection signals.