Video signal processing system for electronic endoscope
AssigneeFuji Photo Optical Co., Ltd.
InventorKiyoshi Inoue
Life of this patent
Estimating the term…
Abstract
A video signal processing system for electronic endoscope, employing a high-sensitivity solid-state image sensor device having an approximately doubled sensitivity along with improved dynamic range and RGB spectral sensitivity ratios and reduced to about 1/2 in size as compared with conventional endoscopic solid-state image sensor devices, the system being arranged to read out therefrom an A-field signal having a preceding line added to each scanning line and a B-field signal having a succeeding line added to each scanning line, store the A- and B-field signals in a field memory, and read out the A- and B-field signals alternately line by line from the field memory as picture data to improve the RGB spectral sensitivity ratios.
Claims4
A video signal processing system for an electronic endoscope, comprising:
- a solid-state image sensor device;
- a video processor for reading out signal charges from said solid-state image sensor device under sequential RGB illuminations;
- a field memory means for storing output data of said video processor;
- control means for reading out from said solid-state image sensor device an A-field signal having a preceding line added to each scanning line and a B-field signal having a succeeding line added to said each scanning line, for storing the A-field and B-field signals in said field memory means, and for reading out the A-field and B-field signals alternately line by line from said field memory means as picture data;
- and
- display means for displaying said picture data.
A video signal processing system for an endoscope, comprising:
- a control means compatible with both:
- a first system employing a single solid-state image sensor device for producing picture data on the basis of one of two different field signals obtained from picture data of each primary color;
- and a second system employing a high-sensitivity solid-state image sensor device having a half number of picture elements as compared with said single solid-state image sensor device of said first system and, said second system comprising first reading means for reading out from said high-sensitivity solid-state image sensor an A-field signal having a preceding line added to each scanning line and a B-field signal having a succeeding line added to said each scanning line, storing means for storing said A-field and B-field signals in a field memory means, and second reading means for reading out said A-field and B-field signals alternatively line by line from said field memory means as picture data to be displayed on a monitor.
Dependencies are inferred from the claim text.