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United States Patent | 3,617,016 |
Bolsey | November 2, 1971 |
A system for generating signals indicative of changes in multiple scanned images. The same subject may be scanned at successive intervals or multiple subjects may be scanned simultaneously. In the former situation, signals representative of the scanned image are stored and then compared with signals from a subsequent scanning. Where simultaneous scanning of subjects occurs, signal comparison is immediate. In both cases, output signals are generated in response to changes in the scanned images, the signals being used for positional correction or data readout.
Inventors: | Bolsey; Emil J. (White Plains, NY) |
Appl. No.: | 04/778,870 |
Filed: | May 27, 1968 |
Current U.S. Class: | 244/3.16 ; 348/208.99; 348/E5.046; 348/E5.062; 348/E5.066; 396/8; 89/41.06 |
Current International Class: | F41G 7/22 (20060101); F41G 7/00 (20060101); F41G 7/20 (20060101); F41G 7/34 (20060101); G08B 13/194 (20060101); G01S 3/78 (20060101); G01S 3/786 (20060101); G03B 15/00 (20060101); G05D 3/14 (20060101); G05D 3/20 (20060101); H04N 5/232 (20060101); H04N 5/14 (20060101); F41g 009/00 (); F42b 015/02 (); F41g 011/00 () |
Field of Search: | 244/3.16 95/12.5 |
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