Browse Prior Art Database

Apparatus for Selecting Character Recognition Logic

IP.com Disclosure Number: IPCOM000095287D
Original Publication Date: 1965-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Hiller, R: AUTHOR

Abstract

Characters printed from devices utilizing an inked ribbon vary in line width over the ribbon life. A measurement can be made upon the character to determine the portion of the ribbon life during which it was printed. Characteristically, ribbon life is divided into three areas, the beginning, middle, and end. The character recognition logic used to identify the particular unknown scanned character is selected according to the area of ribbon life during which that character was printed.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 71% of the total text.

Page 1 of 2

Apparatus for Selecting Character Recognition Logic

Characters printed from devices utilizing an inked ribbon vary in line width over the ribbon life. A measurement can be made upon the character to determine the portion of the ribbon life during which it was printed. Characteristically, ribbon life is divided into three areas, the beginning, middle, and end. The character recognition logic used to identify the particular unknown scanned character is selected according to the area of ribbon life during which that character was printed.

Digitized video data developed in response to scanning the unknown character is entered into shift register 35. The total number of bits in the character pattern is then obtained by counting each bit entered into position 1 of 35 by counter 40. The number of occurrences of a particular bit configuration within the character pattern is determined by the number of times And 45 is satisfied. Each time And 45 is satisfied, counter 50 is advanced one unit. The line width of the character can then be ascertained by dividing twice the value plus one in 50 by the value in 40. This is accomplished by divider 55.

The resulting value is compared against print parameters B and E indicating beginning and end of life, respectively. If the character is printed at the beginning of ribbon life, measurements 70 are permitted to operate upon the data in shift register 35. Such provides measured data to correlator 75 which compares the measurements wi...