 |
|
|
|
|
|
 Title: |
US3978450:
Image character reader system
[ Derwent Title ]
|
| Country: |
US United States of America
|
| |
| Inventor: |
Sanner, Medford Duane; Irving, TX
Lafevers, Jim O.; Richardson, TX
Mirci, Sauas; Mission Viejo, CA
|
| Assignee: |
Recognition Equipment Incorporated, Irving, TX
other patents from RECOGNITION EQUIPMENT INCORPORATED (467235) (approx. 145)
News, Profiles, Stocks and More about this company
|
| Published / Filed: |
1976-08-31
/ 1974-05-30
|
| Application Number: |
US1974000474383
|
| IPC Code: |
Advanced:
G06K 7/08;
G06K 9/00;
Core:
more...
IPC-7:
G06K 9/12;
|
| ECLA Code: |
G06K7/08C2D; G06K9/00E;
|
| U.S. Class: |
Current:
382/320;
235/449;
360/122;
382/137;
Original:
340/146.3C;
235/061.11D;
360/122;
|
| Field of Search: |
340/146.3 C,146.3 D,146.3 AG,146.3 J,146.3 AC,146.3 MA,146.3 R
360/129,120,121,122
235/61.11 E,61.11 D
|
| Priority Number: |
| 1974-05-30 |
US1974000474383 |
|
| Abstract: |
An improved magnetic image character reading system which produces high signal levels, eliminates dead spots between sample tracks for full resolution. Two sets of read heads are positioned in a spaced apart, staggered arrangement such that one set is adjacent the other with elements of the first set staggered to overlap the tracks read by the second set. Scanned signals generated while passing magnetized characters first past one set and then past the second set of heads are combined after delay of the signal generated by the first set of heads to compensate for spacing between the sets of heads.
|
| Attorney, Agent or Firm: |
Richards, Harris and Medlock ;
|
| Primary / Asst. Examiners: |
Boudreau, Leo H.;
|
| INPADOC Legal Status: |
Show legal status actions
|
| Family: |
None
|
First Claim:
Show all 6 claims |
What is claimed is:
1. A reading system for sensing magnetic characters on a document transport past a read station which comprises:
- a. a first set of read head elements each of a selected dimension spaced laterally one from another less than the selected dimension across a path traversed by said document at said read station to sense magnetic material on a first set of spaced, parallel tracks,
- b. a second set of read head elements each of a selected dimension spaced laterally one from another less than the selected dimension across said path downstream from said first set in a partially overlapping relation with respect to said first set to sense magnetic material along parallel tracks intermediate and in part common to said first set of tracks, and having a center line offset from the center line of the next read head of said first set less than the selected dimension,
- c. means to delay signals from said first set, and
- d. means to combine signals from said second set and from said delay means.
|
| Background / Summary: |
Show background / summary
|
| Drawing Descriptions: |
Show drawing descriptions
|
| Description: |
Show description
|
| Forward References: |
Show 9 U.S. patent(s) that reference this one
|
