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Optically Scanned Card/Badge Reader

IP.com Disclosure Number: IPCOM000078824D
Original Publication Date: 1973-Mar-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Georgallis, GC: AUTHOR [+3]

Abstract

Scanned gas display panels, such as the SELF-SCAN* Panel Display. may be used to simultaneously display data on the panel and provide a scanning light source suitable for use in a scanned optical perforated card or badge reader.

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Optically Scanned Card/Badge Reader

Scanned gas display panels, such as the SELF-SCAN* Panel Display. may be used to simultaneously display data on the panel and provide a scanning light source suitable for use in a scanned optical perforated card or badge reader.

The necessary modifications to the display are illustrated in the drawing. The card or perforated media is inserted between the bottom of the display panel, where it is illuminated by the scanning light, passing through a (12 x 80) matrix of holes in a backer plate, and a plurality of light-collecting devices. The light- collecting devices are constructed from fiber optic light-pipe bundles tapered to guide the light. Each * Trademark of the Burroughs Corporation. bundle terminates near a phototransistor which provides a signal when activated by light from the bundle. Thirteen bundles and associated phototransistors are provided. Twelve bundles receive light from the twelve rows in the conventional punch cards and the thirteenth is used to generate sampling signals, by reading a row of eighty holes provided in the backer plate of the panel.

The panel is turned on at column one and once turned on continues scanning. The sampling signals are used to sample the phototransistors and indicate which column of the card is being read. If a hole is punched in any position of a column, the phototransistor associated with that row is activated and read under control of the sampling signal. The display of informati...