Endoscope for displaying a normal image
First Claim
1. An endoscope wherein an insertion section provided at the forward end portion thereof with an objective optical system including a reflecting surface and a solid state imaging device is inserted into a portion of an object of interest and said portion of the object of interest is displayed on a screen of a display unit in response to a video signal outputted from said solid state imaging device in the forward end of said insertion section, characterized in that said endoscope comprises:
- a plurality of memories, into which image information obtainable from said solid state imaging device is written;
first switching means provided on the input sides of said plurality of memories for successively switching said memories with every horizontal scanning time duration;
second switching means provided on the output sides of said plurality of memories for switching said memories with every horizontal scanning time duration such that image information is read out successively from the memory, in which the write-in is completed; and
control means for writing image information into said plurality of memories in a predetermined order and for outputting a control signal to read out image information from the plurality of memories in an order opposite to the predetermined order.
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Accused Products
Abstract
An endoscope used for observing the interior of a cavity in a human body. In the endoscope according to the present invention, an image sensor is provided in the forward end of an insertion section and an object of interest is displayed on a screen of a television set in response to a video signal obtained from the image sensor. According to the present invention, image information from the image sensor is provisionally stored in a memory, and the read-out from the memory is performed by horizontal scanning in accordance with read-out information by reversing the steps in the case of the write-in. With this arrangement, an image of the object of interest, which is inverted in an optical system in the forward end of the insertion section of the endoscope, can be displayed on the screen of the television as a normal image.
103 Citations
9 Claims
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1. An endoscope wherein an insertion section provided at the forward end portion thereof with an objective optical system including a reflecting surface and a solid state imaging device is inserted into a portion of an object of interest and said portion of the object of interest is displayed on a screen of a display unit in response to a video signal outputted from said solid state imaging device in the forward end of said insertion section, characterized in that said endoscope comprises:
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a plurality of memories, into which image information obtainable from said solid state imaging device is written; first switching means provided on the input sides of said plurality of memories for successively switching said memories with every horizontal scanning time duration; second switching means provided on the output sides of said plurality of memories for switching said memories with every horizontal scanning time duration such that image information is read out successively from the memory, in which the write-in is completed; and control means for writing image information into said plurality of memories in a predetermined order and for outputting a control signal to read out image information from the plurality of memories in an order opposite to the predetermined order. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An endoscope wherein an insertion section provided at the forward end portion thereof with an objective optical system including a reflecting surface and a solid state imaging device is inserted into a portion of an object of interest and said portion of the object of interest is displayed on a screen of a display unit in response to a video signal outputted from said solid state imaging device in the forward end of said insertion section, characterized in that said endoscope comprises:
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a plurality of memory sections, each of said memory sections comprising a plurality of memories into which image information obtainable from said solid state imaging device is written; first switching means provided on the input sides of said plurality of memories for successively switching said memories with every horizontal scanning time duration; second switching means provided on the output sides of said plurality of memories for switching said memories with every horizontal scanning time duration such that image information is read out successively from the memory section, in which the write-in is completed; and control means for writing image information into said plurality of memories in a predetermined order and for outputting a control signal to read out image information from the plurality of memories in an order opposite to the predetermined order.
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Specification