Browse Prior Art Database

Information Search System

IP.com Disclosure Number: IPCOM000098751D
Original Publication Date: 1959-Dec-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Furman, RM: AUTHOR [+2]

Abstract

An IBM Type 026 Key Punch and modified IBM Type 056 Verifier combine to form a phrasematching information search system. The argument to be searched for (APPLEPIE in the illustration) is punched in an argument card which is to be compared with each function card from a file. The function cards which contain the argument phrase are selected and duplicated. The file remains complete and in order.

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Information Search System

An IBM Type 026 Key Punch and modified IBM Type 056 Verifier combine to form a phrasematching information search system. The argument to be searched for (APPLEPIE in the illustration) is punched in an argument card which is to be compared with each function card from a file. The function cards which contain the argument phrase are selected and duplicated. The file remains complete and in order.

The argument card is placed on a serial, repetitive reading drum similar to the verifier program drum, but capable of independent stepping. Function cards are placed in the function card hopper of the verifier to be fed serially, column by column, freely without stopping. A release operation positions the argument drum for reading the first character of the argument while simultaneously positioning the function card for reading column 1. The argument drum remains on the first character until stepped or released. Each time the character currently being read from the argument card matches a character currently appearing on the function card, the argument card drum is stepped. When successive matches cause complete stepping through the argument, a match signal is produced on the punch and offset lines. As the argument matching function card passes the read station of the verifier on the next cycle, a blank card from the punch hopper is punched as a duplicate. As reading ends, the matching function card is selected by being offset in the stacker. When rea...