Browse Prior Art Database

Error Detecting Translator

IP.com Disclosure Number: IPCOM000098636D
Original Publication Date: 1959-Aug-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Steckenrider, RN: AUTHOR

Abstract

Magnetic cores having substantially square hysteresis loop characteristics are employed for converting decimal digits to binary coded characters in this translator. The five cores represent the 2/0/, 2/1/, 2/2/, 2/3/ and parity check bit positions in the output code. Translation is effected by threading each of the ten input lines only through those cores representing bit positions which contain a 1 in the corresponding output code character.

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Error Detecting Translator

Magnetic cores having substantially square hysteresis loop characteristics are employed for converting decimal digits to binary coded characters in this translator. The five cores represent the 2/0/, 2/1/, 2/2/, 2/3/ and parity check bit positions in the output code. Translation is effected by threading each of the ten input lines only through those cores representing bit positions which contain a 1 in the corresponding output code character.

Detection of input errors is provided by coupling all input lines to the reference potential through a common line X that is coupled.to every core in the translator with the same sense as the input lines. The input digit drivers are adjusted to produce driving currents of half-select magnitude. When a single input digit driver is energized, half-select current flows through the corresponding input line and through the common line X to the reference potential. The common line develops a half select magnetic force on all cores. The input line develops an additional half-select on the specific cores coupled to it, causing only those cores to be set. If two or more digit drivers are energized simultaneously, two or more units of half-select current are passed through the common line, causing all of the cores to be set. This produces a recognizable error character.

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