Browse Prior Art Database

Display Device

IP.com Disclosure Number: IPCOM000098163D
Original Publication Date: 1960-Apr-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 93K

Publishing Venue

IBM

Related People

French, WK: AUTHOR

Abstract

A plurality of superimposed coded plates 1, 2, 3 and 4 shown in A, B, C and D, when selectively positioned and viewed through the mask 5 in E, form characters in accordance with the selective positioning of the various plates.

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Display Device

A plurality of superimposed coded plates 1, 2, 3 and 4 shown in A, B, C and D, when selectively positioned and viewed through the mask 5 in E, form characters in accordance with the selective positioning of the various plates.

In one form of the device, the plates 1 and 2 have opaque strips 6 and 7, respectively, alternated with transparent strips 8 and 9, the transparent strips 8 being vertically displaced from the strips 9 by a distance equal to one-fourth the width of a strip 8 or 9.

Plates 3 and 4 are completely covered by checkerboard patterns of opaque squares 10 and 11 and transparent squares 12 and 13, the squares of plate 3 being horizontally displaced from the squares on plate 4 by a distance equal to one-half their width.

Each plate 1, 2, 3 and 4 may be considered divided into thirty five squares such as the square labeled AEGF. The squares are five across each plate and seven vertically. Enlarged views of the squares AEGF from plates 1, 2, 3 and 4 are shown in A', B', C' and D', respectively.

Each square AEGF may be considered divided into sixteen squares as illustrated in F.

The plates 1, 2, 3 and 4 are superimposed as shown in a sectional view in G and are individually and selectively shifted from the illustrated positions to a lowered position by solenoids, cams, etc. The amount of movement is equal to the width of a strip 8 or 9. Sixteen combinations of positions of the four plates are possible. For each different combination, a cor...