An information storage and display system for time sequential information using a cathode ray tube raster brightup display and a memory system, wherein the high speed or line scan of the raster is transverse to the time sequence of the displayed information, and the information is stored in a memory in sequence according to its order on the scan rather than its original time sequence.

The present disclosure is directed toward a drive method and circuit for a memory matrix panel which comprises a light-emitting body having hysteresis behavior responsive to application of a desired AC voltage, a plurality of horizontal electrodes disposed on a first major surface of the light-emitting body and a plurality of vertical electrodes disposed on a second major surface of the light-emitting body, each cross point of the both electrodes providing a light-emitting unit point in a matrix...

Deflection system for a cathode ray tube used in synthetic generators of curves comprising a vertical deflection device and a horizontal deflection device. Each of the devices comprises a main loop with a main deflection coil producing a deflection having a high amplitude with a slow variation and a secondary loop with a secondary coil producing a deflection having a low amplitude with a rapid variation; the main loop is fed by a deflection signal and produces an error signal feeding the seconda...

A graphic symbol, completely digital, video signal generator, suitable for use in a television broadcast display control system, derives high resolution (50 nanosecond video dot period) symbols with edging employing off-the-shelf low resolution (200 nanosecond period) shift registers. This is accomplished by employing four different phase clocks each having a low repetition rate (5 MHz). Separate independent edge key and monochrome video signals are derived as the symbol video output of the gene...

In the space between the opposed output window and rotating disk of a light valve, loose particulate material in the fluid which becomes charged and held on the nonconductive surface of the disk or the inside surface of the output window is repelled from one surface to the opposing surface by applying a high voltage between the disk and exterior conductive shell. By periodically reversing polarity of the applied voltage, with an interval of zero voltage interposed between opposite polarity inter...

A method and device for driving a matrix type liquid crystal display element, wherein an alternating voltage .-+.1/6V.sub. O of one-sixth times as great as a selected voltage V.sub.O is applied to a non-selected X line, an alternating voltage .+-.1/6V.sub. O opposite in phase to the alternating voltage applied to the non-selected X line is applied to a non-selected Y line, an alternating voltage .+-.1/2V.sub.O opposite in phase to the alternating voltage applied to the non-selected X line is app...

There is disclosed the conditioning of a gas discharge display/memory panel by applying a high voltage one cycle pulse to the non-utilized discharge cells of the panel. There is particularly disclosed a conditioning process for a multiple gas discharge display/memory panel having a plurality of discharge cells formed by a series of transversely positioned electrodes, the discharge cells being addressable in a series of matrices, each addressable matrix having a relative size of C by R discharge ...

An improved write circuit for a gas panel produces a sequence of alternating polarity write pulses that are superimposed on a sequence of half cycle pulses of the sustain waveform. Thus the accumulation of charges on the walls of a light-emmitting cell that is required for a write operation is produced by a sequence of write pulses, and each write pulse is lower in amplitude than is required for a single write pulse. The write pulses are progressively shifted ahead in phase to further improve th...

A character board carrying a number of characters is placed in face-to-face relationship with a light source matrix comprising light sources of the same number as that of the characters so that one character may be illuminated by one light source. Each character is divided into a predetermined number of sections or dots. A photodetector matrix comprising photodetectors of the same number as that of the sections into which the character is divided is provided in connection with the character boar...

Improved waveforms are provided for a gas panel of the type in which light emitting cells are formed in an ionizable medium at the crossover points of set of horizontally and vertically extending insulated wires. The waveforms include a relatively wide, low amplitude, component and a relatively narrow, high amplitude, component that are individually incapable of producing an avalanche ionization but in combination produce ionization for write, erase, and sustain operations. The write-erase circu...