Television – Responsive to nonvisible energy – Infrared
Patent
1985-10-21
1995-11-14
Buczinski, Stephen C.
Television
Responsive to nonvisible energy
Infrared
250334, 348168, H04N 533, G02B 2610
Patent
active
054671264
ABSTRACT:
An infrared thermography system is provided which includes an infrared camera in which raster scanning is accomplished in parallel using an oscillating mirror and scanned lines of the field of view are projected onto a detection matrix including m detectors oriented in the raster direction. The signal processor receives an analog signal output of the camera and provides sequential analog signals to a display unit which displays a representation of the field of view. The system includes digital enlargement circuitry which enables an enlarged view of a portion of the field of view which contains an object of particular interest to be viewed on the display unit. The enlargement circuit controls the raster scanner to scan at a slow scan rate by causing time successive scanned lines of the field of view to be projected on the detection matrix in overlapped relationship. The analog signal from the camera is digitized to provide a series of digital signals representing a chronological succession of lines corresponding to the lines of the field of view scanned by the camera means. A line reordering circuit provides a reordered digital output of this series of digital signals output from the digitizer to provide a correct correspondence between this series of digital signals and a spatial succession order of field lines in the field of view, in order to compensate for the aforesaid overlapped relationship. Thus, the chronological succession of line data displayed by the display means correctly corresponds to the spatial succession order of the field lines in the field of view.
REFERENCES:
patent: 3804976 (1974-04-01), Gard
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patent: 3953764 (1976-04-01), Miller et al.
patent: 4231066 (1980-10-01), Merchant
patent: 4323776 (1982-04-01), Bridges et al.
patent: 4477834 (1984-10-01), Beaumont et al.
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