Browse Prior Art Database

System to Prevent Motion Sickness in Users of Microfilm and Microfiche Machines

IP.com Disclosure Number: IPCOM000045544D
Original Publication Date: 1983-Apr-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Goodman, DS: AUTHOR

Abstract

Rapid movement of microfilm or microfiche images causes many people to suffer from a form of motion sickness. This may be avoided by automatically removing the image with a shutter whenever the microfilm or microfiche moves too fast.

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

System to Prevent Motion Sickness in Users of Microfilm and Microfiche Machines

Rapid movement of microfilm or microfiche images causes many people to suffer from a form of motion sickness. This may be avoided by automatically removing the image with a shutter whenever the microfilm or microfiche moves too fast.

A shutter may be added to the viewer in either the imaging or the illumination sections, as illustrated in Fig. 1. This shutter is automatically controlled by a "governor" which senses the rate of film movement, and closes the shutter if the movement is rapid. The system could also have a deactivation switch for users who are not sensitive to the film motion.

There are a number of possible embodiments for the required "speedometer". For example, in a microfilm viewer, a small electric generator could be attached to the shaft of the film crank. Similar transducers could be used for a microfiche viewer. The "speedometer" could also be an electro-optical system (Fig. 2), in which the light beam is interrupted by film movement. A spectrum containing high frequencies would indicate rapid movement.

1

Page 2 of 2

2

[This page contains 3 pictures or other non-text objects]