Browse Prior Art Database

Hand-Held CRT Scanner

IP.com Disclosure Number: IPCOM000100907D
Original Publication Date: 1990-Jun-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Dickerson, JA: AUTHOR [+4]

Abstract

A solid-state camera and a motor-driven X-Y table are used with the distortion measurement system shown in Fig. 1. Test patterns displayed on the CRT are digitized with this equipment set-up. A bit-map of the image is created for data manipulation. Seven minutes is required to scan and digitize one test pattern image.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Hand-Held CRT Scanner

       A solid-state camera and a motor-driven X-Y table are
used with the distortion measurement system shown in Fig. 1. Test
patterns displayed on the CRT are digitized with this equipment
set-up.  A bit-map of the image is created for data manipulation.
Seven minutes is required to scan and digitize one test pattern
image.

      An alternative manually-driven system is shown in Fig. 2.
Using one hand, an operator holds the scan fixture against the face
of the CRT.  The operator's other hand provides "scanning" motion
when he moves the electronics package from left to right. Eleven
seconds is required to scan and digitize a test pattern image when
using this system.

      In the alternative system, a linear array of charge-coupled
diodes (200/inch) provides image sensing over a wide range of CRT
intensities.  Optics accommodate faceplate curvature of approximately
0.250 inch.  The electronics package is supported by linear bearings
on precision shafts.  The horizontal position of the scanner is
determined with a linear digital transducer.