Browse Prior Art Database

Numerical Decoder and Display

IP.com Disclosure Number: IPCOM000095673D
Original Publication Date: 1964-May-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Charipper, BA: AUTHOR [+2]

Abstract

This device uses patterns of dots similar to those found on dominoes to display values from one to nine.

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Numerical Decoder and Display

This device uses patterns of dots similar to those found on dominoes to display values from one to nine.

Input values are applied in binary-coded-decimal (BCD) form to switches 10... 13 which represent successive powers of two from 2/0/ to 23, inclusive. Each switch connects one or more of the lamps 1... 9 of the rectangular display to power source 14. The number of lamps controlled is equal to the numerical weight assigned to the switch.

Thus, switch 10 controls lamp 1. Switch 1 1 controls lamps 2 and 3. Switch 12 controls lamps 4, 5, 6 and 7. Switch 13 controls lamps 2, 3 (via diode 15) 4, 5, 6, 7 (via diode 16) 8 and 9. When the switches are closed in combinations representative of B:CD values, the corresponding dot patterns are produced by the lighted lamps. For example, a B:CD three, represented by closing switches 10 and 11, lights lamps 1, 2 and 3. Seven in BCD, represented by closing switches 10, 11 and 12, lights lamps 1... 7.

The display is essentially analog in character, since each dot pattern includes a number of lighted lamps corresponding directly to the weight of the number represented. Thus, in addition to providing a display which is easily read visually, the device is compatible with mechanical or electronic reading devices.

While manual switches are shown as input controls for the display, electronic devices performing equivalent functions can be used. Also, if analog outputs of some form of energy other than ligh...