Claims
- 1. A process for establishing control signals for an alternating plasma panel, in which these signals are applied to two electrodes belonging to two orthogonal networks, and each cell of the panel is formed by the gaseous space located at the intersection between two electrodes in different networks, said procedure being characterized by the fact that:
- a "selection" voltage (Vx1) is applied to one of the electrodes in one of the networks, and a "non-selection" voltage (Vx2) is applied to the other electrodes in the same network;
- simultaneously, a "setting" voltage and a "clearing" voltage (Vy1 and Vy2) are applied respectively to the two electrodes in the other network; the form, amplitude and duration of such voltages being such that cells receiving the selection voltage at one electrode and the setting voltage or clearing voltage at the other electrode are either set or cleared accordingly, while cells receiving the non-selection voltage at one electrode are all maintained in their initial state, regardless of the voltage applied to the other electrode; and
- "maintenance" voltage, and cells receiving the maintenance voltage at one electrode and the selection or non-selection voltage at the other electrode being maintained in their initial state.
- 2. A process as defined in claim 1, in which:
- the selection voltage rises lineally in relation to time, from 0 to V.sub.1, then stabilizes at V.sub.1, before returning to 0;
- the non-selection voltage is 0;
- the setting voltage is negative, with an amplitude of V.sub.1 ;
- the clearing voltage is 0;
- 3. An alternating plasma panel, in which the control signals are established by means of the procedure defined in claim 1.
- 4. A process as defined in claim 1 in which:
- the selection voltage rises lineally in relation to time, from 0 to V1, then stabilizes at V1, before returning to 0;
- the non-selection voltage is 0;
- the setting voltage is negative, with an amplitude of V1;
- the clearing voltage is 0.
- 5. An alternating plasma panel, in which the control signal are established by means of the following procedure:
- the selection voltage rises lineally in relation to time, from 0 to V.sub.1, then stabilizes at V.sub.1, before returning to 0;
- the non-selection voltage is 0;
- the setting voltage is negative, with an amplitude of V.sub.1 ;
- the clearing voltage is 0;
- the maintenance voltage is positive, with an amplitude of V.sub.1.
- 6. A process for controlling a plasma panel,
- said panel having,
- first, second, third, and fourth electrodes,
- cells located at the intersections of the first electrode with the third and fourth electrodes, and at the intersection of the second electrode with the third and fourth electrodes, and having a gas display space at each of said electrode intersections;
- each of said cells:
- (i) being set by a predetermined set voltage being applied across said cells' gas space by said cells' intersecting electrode,
- (ii) being cleared by a predetermined cleared voltage being applied across said cells' gas space by said cells' intersecting electrode,
- (iii) being maintained by a voltage which is neither a set nor a cleared voltage being applied across said cells' gas space by said cells' intersecting electrodes;
- said process comprising the steps of
- (a) applying a first (selection) voltage to the first electrode;
- (b) simultaneously applying a second (non-selection) voltage to the second electrode;
- (c) simultaneously applying a third (setting) voltage to said third electrode; and
- (d) simultaneously apply a fourth (clearing) voltage to said fourth electrode; and
- (e) choosing said first (selection) voltage and choosing said third (setting) voltage such that the combination of said voltages across a cell is said predetermined set voltage, and when said two voltages are simultaneously applied to a cell the cell is set;
- (f) choosing said fourth (clearing) voltage such that the combination of said fourth voltage and said first (selection) voltage across a cell is said cleared voltage and when said voltages are applied across a cell, it clears said cell;
- (g) choosing said second (non selection) voltage such that the combination of said second voltage with said third (setting) and the combination of said second voltage with said fourth (clearing) voltage across any of said cells neither sets nor clears said cells;
- whereby the two cells having a common first electrode may be simultaneously set and cleared.
- 7. A process according to claim 6, wherein said panel has a fifth electrode intersecting said first and second electrodes and having a gas display space at each of said intersections; and comprising the further steps of:
- simultaneously applying with said first (selection) and said second (non selection) voltages a fifth (maintaining) voltage to said fifth electrode;
- choosing said fifth (maintaining) voltage such that the combination of said fifth voltage and said first (selection) voltage across a cell is one of said voltages which maintains said cell; and
- further choosing said fifth (maintaining) voltage such that the combination of said fifth voltage and said second (non selection) voltage across a cell is one of said voltages which maintains said cell;
- thereby three cells having a common electrode may be simultaneously set, cleared, and maintained, respectively.
Priority Claims (1)
Number |
Date |
Country |
Kind |
80 19415 |
Sep 1980 |
FRX |
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Parent Case Info
This application is a continuation of application Ser. No. 302,568, filed Sept. 15, 1981 now abandoned.
US Referenced Citations (3)
Continuations (1)
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Number |
Date |
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Parent |
302568 |
Sep 1981 |
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