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 Title: |
US3806871:
MULTIPLE SCANNER CHARACTER READING SYSTEM
[ Derwent Title ]
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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: |
1974-04-23
/ 1971-04-13
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| Application Number: |
US1971000133690
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| IPC Code: |
Advanced:
G06K 9/03;
G06K 9/20;
G06T 1/00;
Core:
more...
IPC-7:
G06K 9/10;
H04N 1/00;
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| U.S. Class: |
Current:
382/311;
382/322;
Original:
340/146.3H;
178/007.1;
178/006;
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| Field of Search: |
340/146.3,150
178/7.1,7.2
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| Priority Number: |
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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: |
Henon, Paul J.; 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 division of my copending application Ser. No. 701,670, filed Jan. 30, 1968, and now U.S. Pat. No. 3,582,884, which is a continuation-in-part of an application copending with it, Ser. No. 523,367, filed Jan. 27, 1966, and now abandoned.
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| Family: |
Show 10 known family members
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First Claim:
Show all 8 claims |
1. The method of reading graphic characters on documents at a plurality of separated locations, comprising the steps of:
- concurrently scanning documents at said separated locations in a series of consecutive, closely-adjacent and uniformly-spaced scan paths covering the full area containing the characters to be read;
- developing from said scanning operations, and concurrently therewith, binary scan signals indicating the presence or absence of character elements at uniformly-spaced positions along the scan paths;
- concurrently transmitting from said locations to a central receiving station data signals corresponding to the respective scan signals, the transmission of data signals from any given one of said locations being effected concurrently with the development of the scan signals from that location;
- storing information signals corresponding to the data signals from each location in a respective storage means at said receiving station, the storage being effected essentially simultaneously with the receipt of the signals and the storing of the data signals from all said locations occurring concurrently; and
- analyzing information signals in any storage means in which has been accumulated signals of a predetermined amount representing at least one character to be identified, so as to produce output signals identifying
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 14 U.S. patent(s) that reference this one
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