Browse Prior Art Database

80-Column Braille Transducer

IP.com Disclosure Number: IPCOM000035108D
Original Publication Date: 1989-Jun-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 2 page(s) / 75K

Publishing Venue

IBM

Related People

Linnell, D: AUTHOR [+3]

Abstract

Disclosed is a method of producing a compact, low-cost 80-column braille transducer.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

80-Column Braille Transducer

Disclosed is a method of producing a compact, low-cost 80-column braille transducer.

Due to the high cost of braille transducers, full-line or 80-column displays have been impractical.

As a basis for an 80-column (or larger) braille display, a low-cost pin actuator is needed. The actuator described in the preceding article is low-cost and is the basis for an 80-column unit. To provide a linear array of braille transducers and make them easy to use, the standard spacing must be maintained (3.97 mm dot- to-dot space between adjacent cells).

(Image Omitted)

To achieve this size the pin module described in the preceding article was modified by stacking four coil assemblies vertically within the module, as shown in Fig. 1. Two modules are placed end to end, as shown in Fig. 2, to produce a single braille cell. This is possible due to the fact that the end is keyed, as shown in Fig. 2. When 2n modules are stacked side by side, as shown in Fig. 2, a braille transducer n characters in length is possible.

1

Page 2 of 2

2

[This page contains 6 pictures or other non-text objects]