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 Title: |
US3938089:
Double read system for character recognition systems
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
McGregor, Arvin D.; Birmingham, MI
Holmes, William E.; Birmingham, MI
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| Assignee: |
Burroughs Corporation, Detroit, MI
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| Published / Filed: |
1976-02-10
/ 1974-02-25
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| Application Number: |
US1974000445773
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| IPC Code: |
Advanced:
G06K 9/00;
G06K 9/03;
Core:
more...
IPC-7:
G06K 9/00;
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| ECLA Code: |
G06K9/00E; G06K9/03;
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| U.S. Class: |
Current:
382/318;
382/320;
Original:
340/146.3D;
340/146.3C;
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| Field of Search: |
340/146.3 C,146.3 D,146.3 ED
235/61.11 D
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| Priority Number: |
| 1974-02-25 |
US1974000445773 |
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| Abstract: |
An improved character reading system that utilizes two separate read devices: a first read device and a second read device in combination with a random access memory for storing each character read by the first read device, a memory control circuit for writing each character into the random access memory, and a comparison logic circuit for comparing each character as read by the second read device with the corresponding character stored in the random access memory. The system also includes a time-out counter for indicating when the last character has been read and a comparison logic timing circuit for controlling the comparison logic and triggering the random access memory read control circuit so as to provide the corresponding character to the comparison logic.
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| Attorney, Agent or Firm: |
Schivley, G. Gregory ;
McMurry, Michael B. ;
Uren, Edwin W. ;
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| Primary / Asst. Examiners: |
Thesz, Jr., Joseph M.;
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 17 claims |
What is claimed is:
1. In a method of reading characters which includes the steps of reading each character with a first reading means and again reading each character with a second independent and different reading means, the improvement comprising the steps of:
- storing two interpretations of a first character, the first interpretation as read by said first reading means and the second interpretation as read by said second reading means;
- providing two interpretations of a second character, the first interpretation as read by said first reading means and the second interpretation as read by said second reading means;
- selecting for output the first interpretation of said first character if both interpretations of said first character are the same;
- selecting a non-reject interpretation of said first character for output when the other interpretation of said first character is a reject character;
- outputting a reject character when both interpretations of said first character are reject characters;
- selecting only characters from said first reading means when the second interpretation of said first character and of said second character are both reject characters;
- selecting only characters from said second reading means when the first interpretation of said first character and of said second character are both reject characters; and
- outputting a reject character where the interpretations of said first character are not equal, but where neither is a reject character, and where both interpretations of said second character are equal and not reject characters.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 12 U.S. patent(s) that reference this one
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