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Displaying Encoding and Reading Characters

IP.com Disclosure Number: IPCOM000073515D
Original Publication Date: 1970-Dec-01
Included in the Prior Art Database: 2005-Feb-22
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Tierney, DW: AUTHOR

Abstract

This description is directed to a device for displaying six characters which may be entered in any conventional manner, by positioning in succession six wheels or sliders. For illustration purposes, wheel type displays have been chosen. Each of the wheels includes about its periphery, thirteen display positions. These include digits 0 through 9, a blank position, a - and an = sign. In addition, positioned about the periphery are eight actuator projections. As the wheels are rotated, the selected character is displayed in a window area, and the actuators are displaced from a normal rest position and coact with four switches S1, S2, S3, and S4 to selectively connect resistors R1, R2, R3, and R4 in a parallel circuit.

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Displaying Encoding and Reading Characters

This description is directed to a device for displaying six characters which may be entered in any conventional manner, by positioning in succession six wheels or sliders. For illustration purposes, wheel type displays have been chosen. Each of the wheels includes about its periphery, thirteen display positions. These include digits 0 through 9, a blank position, a - and an = sign. In addition, positioned about the periphery are eight actuator projections. As the wheels are rotated, the selected character is displayed in a window area, and the actuators are displaced from a normal rest position and coact with four switches S1, S2, S3, and S4 to selectively connect resistors R1, R2, R3, and R4 in a parallel circuit. When the six characters have been entered by positioning the six successive character wheels, the resistor sets R1 through R4 associated with each wheel are scanned in sequence. As each resistor set is scanned, the value of the resistors connected in the circuit is determined, and the value thus read corresponds to the angular displacement of the wheel and the character displayed in the display window. All of the positions associated with a single wheel are displayed in view A showing the coaction of the actuators with the various switch contacts S1 through S4 in each of the thirteen discreet angular positions of the wheel.

Alternatively, a single set of resistors and switches S1 through S4 may be employed. Th...