Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Electro Optic Data Store

IP.com Disclosure Number: IPCOM000094143D
Original Publication Date: 1966-Jun-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

McDonnell, JA: AUTHOR

Abstract

This storage unit either rapidly writes on or reads or both from photographic film having binary coded indicia. The latter are in the form of transparencies at those bit positions wherever a 1 is to be denoted.

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

Electro Optic Data Store

This storage unit either rapidly writes on or reads or both from photographic film having binary coded indicia. The latter are in the form of transparencies at those bit positions wherever a 1 is to be denoted.

A particular bit is addressed by X and Y selection techniques. Such is effected by selecting a particular one of a bank of parallel elongated cathodes C and a particular horizontal strip of grid G to permit electrons to pass through C and G to phosphor-coated plate P only at the selected bit. The glow thus generated on the plate can be used to write on unexposed film F. To read exposed film, light can pass through a transparency on F at that bit and is focused by lens L on and detected by the photocell PC.

By eliminating G, this unit can be word-oriented instead of bit-oriented. Various combinations of a screen and suppressor and plate can be used in place of either the cathode or grid or both.

1

Page 2 of 2

2

[This page contains 1 picture or other non-text object]