Communications: electrical – Systems – Portable self-contained
Patent
1974-12-18
1976-07-13
Curtis, Marshall M.
Communications: electrical
Systems
Portable self-contained
315169TV, 340343, G06F 314
Patent
active
039697185
ABSTRACT:
In a plasma display system, electronic circuitry is used for applying voltage to a plurality of selected cells, all part of a single gas-filled chamber, to cause these cells to be written and erased if previously unwritten, without disturbing the written
ot written (lit/unlit) status of every cell in the panel. By thus writing and erasing cells in a particular chamber, writing of data into them is made more reliable because the free electrons necessary to ensure reliable writing are made available for a period of time. The particular technique employed to write and erase these selected cells is particularly well suited for displays using coincident-select writing and erasing. The pulses to perform the operation comprise first, a pulse applied to the electrode adjacent the entire length of a selected chamber. A second pulse is applied to the electrodes transverse to the chambers, causing the unlit cells in the selected chamber to be written. After the first and before the second pulse terminates, a third pulse opposite in polarity is applied to the electrode adjacent the chamber which allows the trailing edge of the second pulse to erase the wall charge created in the previously unwritten cells by the leading edge of the second pulse, but no others.
REFERENCES:
patent: 3803449 (1974-04-01), Schmersal
patent: 3840779 (1974-08-01), Schermerhorn
patent: 3851210 (1974-11-01), Schermerhorn
patent: 3851327 (1974-11-01), Ngo
Control Data Corporation
Curtis Marshall M.
Schwarz Edward L.
LandOfFree
Plasma panel pre-write conditioning apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Plasma panel pre-write conditioning apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma panel pre-write conditioning apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1742551