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Gas Panel Matrix Driver

IP.com Disclosure Number: IPCOM000079418D
Original Publication Date: 1973-Jul-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 85K

Publishing Venue

IBM

Related People

Bringol, CR: AUTHOR

Abstract

This is a method and technique of driving and controlling a gas panel which includes horizontal and vertical drive lines, selectively connected to voltage drivers under control of a logic character generator and a summing resistor matrix employed between the drivers and the gas panel.

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Gas Panel Matrix Driver

This is a method and technique of driving and controlling a gas panel which includes horizontal and vertical drive lines, selectively connected to voltage drivers under control of a logic character generator and a summing resistor matrix employed between the drivers and the gas panel.

The figure shows two first and second sets of vertical drivers b(1) through b(e) and a(1) through a(n), respectively, and there is a resistor matrix between those drivers and the panel. There is a horizontal resistor matrix associated with first and second horizontal drivers c(1) through c(e) and d(1) through d(n).

To select a given cell, for instance cell 73, first selection will be made of b and c drivers which define the character position on the matrix. In this case, driver b(2) will be selected by the logic and it will apply a half-select voltage through resistor 74 to drive line 80, which is the vertical drive line associated with cell 73. At the same time, drive c(1) will be selected and it will apply through resistor 70, a half-select voltage along line 81 which is the horizontal drive line for cell 73. Thus, the character position is selected.

Next, the desired cell, which in this case is cell 73, is selected by selecting one of the drivers a(1) through a(n) and d(1) through d(n) which are, respectively, vertical and horizontal drivers. In this case, to select cell 73, driver d(6) is selected and it applies a half-select potential along line 72 and t...