Browse Prior Art Database

Data Storage System

IP.com Disclosure Number: IPCOM000093023D
Original Publication Date: 1967-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Frankovsky, AJ: AUTHOR [+2]

Abstract

This system reduces the rate of nonread character fields on multiple field documents processed by a character recognition system having a rescan mode. It allows character fields that are correctly read on any scan to be retained for processing. This information would be lost by a system which requires all fields to be read correctly within one scan. This is accomplished by storing any field of characters which is correctly read on the original scan or any successive rescan. Whenever the character recognition system fails to recognize a character within a field on the first scan, that field is erased and the document is rescanned at a different clipping level. This system is particularly effective when large print density variations exist from field to field on multiple field documents.

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Data Storage System

This system reduces the rate of nonread character fields on multiple field documents processed by a character recognition system having a rescan mode. It allows character fields that are correctly read on any scan to be retained for processing. This information would be lost by a system which requires all fields to be read correctly within one scan. This is accomplished by storing any field of characters which is correctly read on the original scan or any successive rescan. Whenever the character recognition system fails to recognize a character within a field on the first scan, that field is erased and the document is rescanned at a different clipping level. This system is particularly effective when large print density variations exist from field to field on multiple field documents.

The information obtained on the first scan is stored on magnetic drum 4 under the control of recognition logic 1 and magnetic drum control circuit 2. When a failure field is detected at failure circuit 3, circuit 2 causes an erase function for the error field to occur at drum 4. This is accomplished through special store position field circuits 2a or 2b at the end of scan. In addition, failure circuit 3 initiates a rescan request of scan control circuit 5 because of the error field. Drum 4 then has an open storage location assigned to the failure field. Circuit 3 retains the fact that one or more fields are read correctly through field good circuits 3a and 3b.

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