Image freezing unit for obtaining still image at a precise timin

Details Image freezing unit for obtaining still image at a precise timin Image freezing unit for obtaining still image at a precise timin

1995-03-17

1997-04-01

Britton, Howard W.

Television

Special applications

With endoscope

348 65, 348 70, A61B 1300, A61B 104

Patent

active

056171366

ABSTRACT:
A freezing unit of the present invention includes a color discrepant magnitude detection unit for accumulating the color corrected magnitude for each pixel output from a color discrepancy correction circuit, and detecting it as the color discrepant magnitude for one field. The freezing unit also includes a comparator circuit including a memory for storing the color discrepant magnitudes for sixteen fields, and a comparator for comparing the color discrepant magnitudes for sixteen fields to search a field with the least color discrepant magnitude, and a memory for storing sixteen field images. The freezing unit further includes a reference position selection circuit for selecting the reference position of the image by the freezing signal, and an image selection circuit for selecting the address of an image of a field with the least color discrepant magnitude.

REFERENCES:
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patent: 4933757 (1990-06-01), Kanno et al.
patent: 5032913 (1991-07-01), Hattori et al.
patent: 5164824 (1992-11-01), Ieoka et al.
patent: 5331949 (1994-07-01), Funakoshi et al.
patent: 5333010 (1994-07-01), Nakamura et al.
patent: 5339159 (1994-08-01), Nakamura et al.
patent: 5408263 (1995-04-01), Kikuchi et al.
patent: 5408265 (1995-04-01), Sasaki

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