Browse Prior Art Database

Character Recognition System

IP.com Disclosure Number: IPCOM000094934D
Original Publication Date: 1965-Jul-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Hardin, WW: AUTHOR [+2]

Abstract

This character recognition system utilizes a cathode ray tube scanner. This provides a first search and normalizing pattern for detecting and normalizing the size of characters to be scanned. Such is followed by a recognition scan of the character utilizing a minimum number of scans for determining the value of the character scanned.

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Character Recognition System

This character recognition system utilizes a cathode ray tube scanner. This provides a first search and normalizing pattern for detecting and normalizing the size of characters to be scanned. Such is followed by a recognition scan of the character utilizing a minimum number of scans for determining the value of the character scanned.

Characters on document 1 are scanned by scanning patterns generated by cathode ray tube CRT. The patterns are projected upon the characters via an optical system indicated diagrammatically by lens 3. The variations in reflected light as a result of scanning a character, such as character 2 on document 1, are detected by photo multiplier PM. The output of PM is supplied to suitable amplifying and shaping circuits 5. Here the scanning signals are amplified to suitable values, shaped and digitalized for further use.

The scanning pattern developed by CRT is provided by deflection circuits 7 which are operated in one of two modes. The first is considered a search and normalizing mode where the deflection is controlled by search and normalize circuits 9. The second pattern is a bar code pattern mode governed by bar code pattern control circuits 11. Circuits 9 provide a pattern which locates the character and also proceeds through a routine which determines the size of the character for subsequent analysis and recognition. Circuits 9 and 11 are selectively controlled by mode selection circuits 13 which are, in turn, controlled via recognition circuits 15. The output of amplifier 5 i...