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Alphanumeric Display

IP.com Disclosure Number: IPCOM000098957D
Original Publication Date: 1962-Mar-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Kamp, DE: AUTHOR [+3]

Abstract

Rotatable disk 1 of transparent material has a set of characters to be displayed arranged around the periphery. Disk 1 and coded drum 2 and ratchet 3 are mounted on shaft 4, driven by motor 5. When a character is to be selected, a coded input signal is applied through code lines 6 and associated brushes 6A to drum 2. Common brush 7 couples the voltage from drum 2 to energize relay 8, and to an external source through terminal 9. When relay 8 is energized, common contact of switch 11 moves to its upper position and also disengages rachet pawl 10 which allows shaft 4 to rotate.

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Alphanumeric Display

Rotatable disk 1 of transparent material has a set of characters to be displayed arranged around the periphery. Disk 1 and coded drum 2 and ratchet 3 are mounted on shaft 4, driven by motor 5. When a character is to be selected, a coded input signal is applied through code lines 6 and associated brushes 6A to drum 2. Common brush 7 couples the voltage from drum 2 to energize relay 8, and to an external source through terminal 9. When relay 8 is energized, common contact of switch 11 moves to its upper position and also disengages rachet pawl 10 which allows shaft 4 to rotate.

Voltage is now applied from terminal 20 through switch 11 to energize motor 5, causing drum 2 and disk I to rotate. When the character corresponding to the input signal is in position to be displayed, drum 2 is so coded that no voltage is supplied to common brush 7. This deenergizes relay 8 allowing rachet pawl 10 to engage rachet 3 and stop rotation of disk 1 and drum 2. Switch 11 returns to its normally closed position disconnecting the voltage to the motor and applying it to lamp 12. Light is then projected through lenses 13, 14 and the selected character onto the translucent display screen 15.

The voltage appearing on terminal 9 is used to indicate when the desired character is located. Alternatively, by applying a second input signal voltage to terminal 9 back through the drum 2 and code lines 6, the coded output from the lines 6 indicates what character is in posit...