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From: evans@mhuxt.UUCP (crandall)
Newsgroups: net.audio
Subject: photon stylus from the past
Message-ID: <797@mhuxt.UUCP>
Date: Sat, 20-Apr-85 16:04:50 EST
Article-I.D.: mhuxt.797
Posted: Sat Apr 20 16:04:50 1985
Date-Received: Sun, 21-Apr-85 05:41:54 EST
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 9

For what its worth a fellow in my group at Murray Hill mentioned that he and
another fellow built a "light beam" stylus in the late 50s to make a gee-whiz
demo for a single tube 8 bit ADC (it had an internal shadow mask!) they were
working on. He reports that the thing produced crediable sound. Tracking was
via a non-functioning stylus as they didn't have time to build a photo-tracker.

			Steve Crandall
			AT&T Bell Labs
			ihnp4!mhuxt!evans