Electronic endoscope
First Claim
1. An electronic endoscope, comprising:
- a light source that radiates illuminating light;
a movie-image processor that alternately reads odd-field image-pixel signals corresponding to an odd-field and even-field image-pixel signals corresponding to an even-field to generate a movie-image;
a still-image processor that alternately reads odd-line image-pixel signals and even-line image-pixel signals over two field intervals to generate a still image on the basis of one frame worth of image-pixel signals generated by a one-time still image exposure, the illuminating light being blocked for a latter field interval in the two field intervals;
an image change processor that switches between an operation of said movie-image processor for displaying the movie-image and an operation of said still-image processor for displaying the still-image; and
a provisional image displayer that displays a provisional image on the basis of at least one of odd-field image-pixel signals and even-field image-pixel signals that are obtained by an exposure before the still image exposure for recording a still image, while said still-image processor reads the odd-line and even-line image-pixel signals over the two field intervals,wherein, when the operation of the still-image processor is started, the provisional image displayer displays, in order, a first provisional image based on even-field image-pixel signals that are obtained by an exposure before the still image exposure and subsequently a second provisional image based on odd-field image-pixel signals that are obtained by an exposure before the still image exposure, until the still-image processor finishes reading the odd-line and even-line image-pixel signals over the two field intervals.
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Accused Products
Abstract
An electronic endoscope has a light source that radiates illuminating light, a movie-image processor, a still-image processor, an image-change processor, and provisional image displayer. The still-image processor that alternately reads odd-line image-pixel signals and even-line image-pixel signals over two field interval to generate a still image on the basis of one frame worth of image-pixel signals generated by a one-time still image exposure. The illuminating light being blocked for a latter filed interval in the two field interval. The image change processor switches between a performance of the movie-image processor for displaying the movie-image and a performance of the still-image processor for displaying the still-image. While the still-image processor reads the odd-line and even-line image-pixel signals over the two field intervals, the provisional image displayer displays a provisional image on the basis of at least one of odd-field image-pixel signals and even-field image-pixel signals, which are obtained by an exposure before the still image exposure.
61 Citations
5 Claims
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1. An electronic endoscope, comprising:
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a light source that radiates illuminating light; a movie-image processor that alternately reads odd-field image-pixel signals corresponding to an odd-field and even-field image-pixel signals corresponding to an even-field to generate a movie-image; a still-image processor that alternately reads odd-line image-pixel signals and even-line image-pixel signals over two field intervals to generate a still image on the basis of one frame worth of image-pixel signals generated by a one-time still image exposure, the illuminating light being blocked for a latter field interval in the two field intervals; an image change processor that switches between an operation of said movie-image processor for displaying the movie-image and an operation of said still-image processor for displaying the still-image; and a provisional image displayer that displays a provisional image on the basis of at least one of odd-field image-pixel signals and even-field image-pixel signals that are obtained by an exposure before the still image exposure for recording a still image, while said still-image processor reads the odd-line and even-line image-pixel signals over the two field intervals, wherein, when the operation of the still-image processor is started, the provisional image displayer displays, in order, a first provisional image based on even-field image-pixel signals that are obtained by an exposure before the still image exposure and subsequently a second provisional image based on odd-field image-pixel signals that are obtained by an exposure before the still image exposure, until the still-image processor finishes reading the odd-line and even-line image-pixel signals over the two field intervals. - View Dependent Claims (2, 3, 4)
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5. An apparatus for displaying an observed image associated with an electronic endoscope, comprising:
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a still-image processor that alternately reads odd-line image-pixel signals and even-line image-pixel signals over two field interval to generate a still image on the basis of one frame worth of image-pixel signals generated by a one-time still image exposure, illuminating light being blocked for a latter filed interval in the two field interval; an image change processor that switches a performance of a movie-image processor for displaying a movie-image and a performance of said still-image processor for displaying the still-image; and a provisional image displayer that displays a provisional image on the basis of at least one of odd-field image-pixel signals and even-field image-pixel signals that are obtained by an exposure before the still image exposure for recording the still-image, while said still-image processor reads the odd-line and even-line image-pixel signals over the two field intervals, wherein, when the performance of the still-image processor is started, the provisional image displayer displays, in order, a first provisional image based on even-field image-pixel signals that are obtained by an exposure before the still image exposure and subsequently a second provisional image based on odd-field image-pixel signals that are obtained by an exposure before the still image exposure, until the still-image processor finishes reading the odd-line and even-line image-pixel signals over the two field intervals.
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Specification