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 Title: |
US3582884:
MULTIPLE-SCANNER CHARACTER READING SYSTEM
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| Country: |
US United States of America
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| Inventor: |
Shepard, David H.; Rye, NY
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| Assignee: |
Cognitronics Corporation, Mount Kisco, NY
other patents from COGNITRONICS CORPORATION (110145) (approx. 18)
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| Published / Filed: |
1971-06-01
/ 1968-01-30
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| Application Number: |
US1968000701670
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| IPC Code: |
Advanced:
G06K 9/00;
Core:
more...
IPC-7:
G06K 9/10;
H04N 1/00;
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| U.S. Class: |
Current:
382/245;
382/322;
Original:
340/146.3;
178/006;
178/007.1;
340/149;
340/172.5;
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| Field of Search: |
340/146.3,149,150,151,152,172.5,182,183
178/001,2,3,4.1,6,7.1,7.3,11,17
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| Priority Number: |
| 1968-01-30 |
US1968000701670 |
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| Abstract: |
A system comprising a central station having data processing apparatus with a common data buss arrangement interconnecting a data processor with its peripheral devices including a number of incoming data buffers. A plurality of remote desk top scanner units are connected to the central station, each being arranged to receive a document bearing graphic characters and to scan the characters on the document with an optical light beam so as to sweep the character area in a series of adjacent paths. Each remote scanner has means to develop scan signals representing the light reflected from the scanned document and to produce binary code groups indicating the scan distances between certain selected events such as white-to-black transitions. The code groups from each remote scanner are transmitted to a respective data buffer at the central station and subsequently are decoded to reconstruct the original video scan data in a form suitable for deciphering by character recognition means so as to identify the individual characters of the document. The central data processing apparatus, including decoding and character recognition means, operates on a time-sharing basis to service all of the remote units.
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| Attorney, Agent or Firm: |
Bryan, Parmelee, Johnson & Bollinger ;
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| Primary / Asst. Examiners: |
Wilbur, Maynard R.; Boudreau, Leo H.
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Parent Case: |
This application is a continuation-in-part of my copending application Ser. No. 523,367, filed Jan. 27, 1966, and now abandoned. The invention relates primarily to sensing and recognition of graphic characters. In another aspect, the invention relates to improved techniques for transmitting graphic symbol material between remote points.
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| Family: |
Show 4 known family members
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First Claim:
Show all 17 claims |
I claim:
1. The method of reading graphic characters on a document bearing characters in line format, comprising the steps of:
- scanning the document in a series of consecutive closely adjacent sweeps parallel to and completely traversing the line of characters to be read, the number of such successive sweeps being sufficient to scan in their entirety all of said characters in that line;
- developing from said scanning operation binary scan signals indicating the instantaneous amount of light reflected from predetermined positions along the scan path;
- transmitting to a receiving station data signals corresponding to said scan signals;
- storing said data signals in a buffer at said receiving station until data is accumulated representing all of said characters in said line;
- reading out such accumulated data signals to produce a series of sequences of binary data bits representing a series of vertical sweeps through said characters in said line; and
- analyzing said series of sequences of data bits to produce output signals identifying each of the characters in the line.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 43 U.S. patent(s) that reference this one
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