Browse Prior Art Database

Display and Storage Device

IP.com Disclosure Number: IPCOM000092438D
Original Publication Date: 1966-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Dingwall, RP: AUTHOR

Abstract

The system is used to both store and display a desired image. An image is initially projected on face 10 of CRT tube 12 by use of light pen 14, a fixed film device 16 projecting an image through window 18 in CRT 12, or a CPU applying suitable deflection voltages through line 19 and Or 20 to control input 22 of the CRT.

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

Display and Storage Device

The system is used to both store and display a desired image. An image is initially projected on face 10 of CRT tube 12 by use of light pen 14, a fixed film device 16 projecting an image through window 18 in CRT 12, or a CPU applying suitable deflection voltages through line 19 and Or 20 to control input 22 of the CRT.

The image on face 10 is picked up by vidicon tube 24 through window 26 and applied through conditioned gate 28 and Or 20 to input 22 to maintain the image on face 10. This storage loop is maintained as long as there is a control input applied to line 30 leading to the conditioning input of gate 28.

The image on face 10 can have additions made to it by, for example, the use of pen 14. By selectively cutting off the signal on line 30, a portion of the image can be erased while retaining the rest of the image. This permits a drawing to be corrected or otherwise modified. When it is desired to store a new image on face 10, the signal on line 30 is turned off. This occurs for a sufficient period of time to allow the image on CRT 10 to decay. A new image is then applied to the face 10 as described.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]