Browse Prior Art Database

Braille Output Terminal

IP.com Disclosure Number: IPCOM000083629D
Original Publication Date: 1975-Jun-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Potak, DL: AUTHOR

Abstract

Characters coded in braille are represented by the electromagnetic reciprocation of selected pins 1 mounted in a box 2, constrained for two-dimensional movement between character positions corresponding to those of a visual alphanumeric display. Box 2 slides on transverse rods 3 themselves supported to slide on longitudinal rods 4.

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Braille Output Terminal

Characters coded in braille are represented by the electromagnetic reciprocation of selected pins 1 mounted in a box 2, constrained for two- dimensional movement between character positions corresponding to those of a visual alphanumeric display. Box 2 slides on transverse rods 3 themselves supported to slide on longitudinal rods 4.

A column emitter 5, supported with rods 3, is notched at character positions for engagement with a spring loaded detent 6. Similarly a notched row emitter 7, in cooperation with detent 8 locates the box 2 at character row positions. Adjustable collars, not shown, carried on the rods 3, 4, define the boundaries of the display.

In operation, the position of box 2 is signalled to an adapter over cable 9, which returns the coded representation of the character at that position. Coding into braille is onto latches at box 2, and repeated reciprocation of the pins 1 is achieved by an adjustable oscillator in pin coil drive circuitry.

A cursor can be represented by reciprocation of all pins 1 or of an additional pin, not shown.

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