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 Title: |
US3744025:
OPTICAL CHARACTER READING SYSTEM AND BAR CODE FONT THEREFOR
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| Country: |
US United States of America
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| Inventor: |
Bilgutay, Ilhan M.; Mountain View, CA 94040
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| Assignee: |
None
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| Published / Filed: |
1973-07-03
/ 1971-02-25
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| Application Number: |
US1971000118771
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| IPC Code: |
Advanced:
G06K 7/10;
G06K 9/03;
G06K 9/18;
H03K 19/173;
Core:
more...
IPC-7:
G06M 9/18;
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| U.S. Class: |
Current:
382/184;
235/436;
235/437;
235/462.28;
235/462.49;
235/473;
235/494;
382/289;
382/309;
382/314;
382/321;
385/119;
Original:
340/146.3Z;
340/146.3A;
235/061.11E;
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| Field of Search: |
340/146.3
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| Priority Number: |
| 1971-02-25 |
US1971000118771 |
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| Abstract: |
An optical character reading system comprising a hand-held probe device for scanning a printed font to produce an output adapted for driving a printed readout display or producing digital inputs to data storage or computing apparatus. The font is comprised of bar code symbols which can form humanly recognizable alphanumeric characters. At the tip of the probe device are means for transmitting a bright light and means for receiving reflected light at spaced apart windows. The light receiving means of each window is connected to an electrical signal producing element so that as the device scans over a series of characters, each window "sees" the reflective and non-reflective areas and output signals are produced which provide information as to the relative locations of reflective and non-reflective areas and also the number of non-reflective edges passed during scanning and these signals provide input data to logic circuitry that includes means for compensating for variations in the direction of scanning or orientation of the probe with respect to the character block; means for identifying variables and characters of the printing font and for producing and storing representative data outputs and also error-checking components for assuring the accuracy of the data outputs.
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| Attorney, Agent or Firm: |
Schwartz, Lew ;
Sivertson, Wayne A. ;
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| Primary / Asst. Examiners: |
Wilbur, Maynard R.; Gnuse, Robert F.
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Family: |
Show 2 known family members
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First Claim:
Show all 30 claims |
I claim:
1. An optical reading device for scanning a series of spaced printed variables in the form of adjacent bars of different reflectivity to provide electrical output signals representative of each variable, said device comprising:
- a generally elongated main housing adapted to be held in one hand and having a forward tapered portion on the one end terminating at a tip means;
- a series of reflective light receiving means fixed in said tip means at aligned regularly spaced apart openings;
- light transmitting means comprising a plurality of glass fibers fixed at spaced apart locations within said tip means adjacent to each of said light receiving means and extending axially through said device;
- a rear housing portion on said main housing at the opposite end from said forward portion;
- at least three light sensitive signal producing elements mounted within said device, each being generally identically sensitive to the different reflectivity of said bars and each being positioned to receive light from one of said light reflecting means;
- support means in said main housing for holding in place each of said reflective light receiving means and said light transmitting glass fibers extending from said tip means, said light transmitting fibers from said tip means converging within said housing to form a bundle retained by said support means;
- at least three light sensitive signal producing elements mounted within said device, each being generally identically sensitive to the different reflectivity of said bars;
- plug means in said rear housing portion for retaining and positioning each of said light sensitive signal producing elements to receive light from one of said light reflecting means;
- a light pipe adapted for connection to an external light source comprised of substantially more glass fibers than said light transmitting means and having end portions retained by said plug means, said light pipe being in direct alignment with said bundle of light transmitting fibers thereby providing a cold light to said tip means;
- means for holding said main housing and said rear housing together so that said light sensitive elements are adjacent to and responsive to light from the inner ends of said reflective light receiving fibers from said tip means; and
- electrical lead means extending from said light sensitive elements for transmitting signals produced thereby in response to reflective lights from said light receiving means.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 27 U.S. patent(s) that reference this one
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