Irradiation time control imaging device and irradiation time control endoscope device
AssigneeKabushiki Kaisha Toshiba
InventorsTetsuo Sakurai, Bin Qi
Life of this patent
Estimating the term…
Abstract
An imaging device includes: an imaging module configured to have a plurality of photoelectric conversion elements corresponding to a frame composed of a plurality of lines, with start of an accumulation period of electric charge by the plural photoelectric conversion elements being different depending on each of the lines, and reading the accumulated electric charge to repeatedly output the read electric charge as an image signal; a light source configured to irradiate an imaging range of the imaging module; and a controller configured to control an irradiation time of the light source according to a motion of an image captured by the imaging module.
Claims18
An imaging device, comprising:
- a CMOS image sensor configured to have a plurality of photoelectric conversion elements corresponding to a plurality of lines, with start of an accumulation period of electric charge by the plural photoelectric conversion elements being different depending on each of the lines, and read the accumulated electric charge to repeatedly output the read electric charge as an image signal;
- a light source configured to irradiate an imaging range of the CMOS image sensor;
- a detector configured to detect a motion vector of an image imaged by the CMOS image sensor;
- a comparator configured to compare the motion vector detected by the detector with a threshold value;
- and
- a controller configured to control the light source so as to cause the light source to irradiate the imaging range within a span during which the accumulation periods of the plural photoelectric conversion elements overlap with one another, and
- wherein the controller sets a first irradiation time of the light source when the value of the motion vector detected by the detector is smaller than the threshold value, and sets a second irradiation time of the light source shorter than the first irradiation time when the value of the motion vector detected by the detector is equal to or larger than the threshold value.
An imaging device, comprising:
- a CMOS image sensor configured to have a plurality of photoelectric conversion elements corresponding to a plurality of lines, with start of an accumulation period of electric charge by the plural photoelectric conversion elements being different depending on each of the lines, and read the accumulated electric charge to repeatedly output the read electric charge as an image signal;
- a light source configured to irradiate an imaging range of the CMOS image sensor;
- a detector configured to detect a motion vector of an image imaged by the CMOS image sensor;
- and
- a controller configured to control the light source so as to cause the light source to irradiate the imaging range within a span during which the accumulation periods of the plural photoelectric conversion elements overlap with one another based on comparison of the motion vector detected by the detector with a threshold value.
An endoscope device, comprising:
- a scope inserted into an inspection target;
- a CMOS image sensor provided at a tip of the scope, the CMOS image sensor configured to have a plurality of photoelectric conversion elements corresponding to a plurality of lines, with start of an accumulation period of electric charge by the plural photoelectric conversion elements being different depending on each of the lines, and read the accumulated electric charge to repeatedly output the read electric charge as an image signal;
- a light source configured to irradiate an imaging range of the CMOS image sensor;
- a detector configured to detect a motion vector of an image imaged by the CMOS image sensor;
- a comparator configured to compare the motion vector detected by the detector with a threshold value;
- a controller configured to control the light source so as to cause the light source to irradiate the imaging range within a span during which the accumulation periods of the plural photoelectric conversion elements overlap with one another;
- and
- a monitor configured to display an image signal output from the CMOS image sensor as an image, and
- wherein the controller sets a first irradiation time of the light source when the value of the motion vector detected by the detector is smaller than the threshold value, and sets a second irradiation time of the light source shorter than the first irradiation time when the value of the motion vector detected by the detector is equal to or larger than the threshold value.
An endoscope device, comprising:
- a scope inserted into an inspection target;
- a CMOS image sensor provided at a tip of the scope, the CMOS image sensor configured to have a plurality of photoelectric conversion elements corresponding to a plurality of lines, with start of an accumulation period of electric charge by the plural photoelectric conversion elements being different depending on each of the lines, and read the accumulated electric charge to repeatedly output the read electric charge as an image signal;
- a light source configured to irradiate an imaging range of the CMOS image sensor;
- a detector configured to detect a motion vector of an image imaged by the CMOS image sensor;
- a controller configured to control the light source so as to cause the light source to irradiate the imaging range within a span during which the accumulation periods of the plural photoelectric conversion elements overlap with one another based on comparison of the motion vector detected by the detector with a threshold value;
- and
- a monitor configured to display an image signal output from the CMOS image sensor as an image.
A running method of an imaging device comprising a CMOS image sensor configured to have a plurality of photoelectric conversion elements corresponding to a plurality of lines, with start of an accumulation period of electric charge by the plural photoelectric conversion elements being different depending on each of the lines, and read the accumulated electric charge to repeatedly output the read electric charge as an image signal, a light source for exposure, a controller configured to control the light source, a detector configured to detect a motion vector of an image imaged by the CMOS image sensor and a comparator configured to compare the motion vector detected by the detector with a threshold value,
- irradiating an imaging range of the CMOS image sensor by the light source;
- controlling the light source so as to cause the light source to irradiate the imaging range within a span during which the accumulation periods of the plural photoelectric conversion elements overlap with one another by the controller;
- setting a first irradiation time of the light source when the value of the motion vector detected by the detector is smaller than the threshold value by the controller;
- and
- setting a second irradiation time of the light source shorter than the first irradiation time when the value of the motion vector detected by the detector is equal to or larger than the threshold value by the controller.
A running method of an imaging device comprising a CMOS image sensor configured to have a plurality of photoelectric conversion elements corresponding to a plurality of lines, with start of an accumulation period of electric charge by the plural photoelectric conversion elements being different depending on each of the lines, and read the accumulated electric charge to repeatedly output the read electric charge as an image signal, a light source for exposure, a detector configured to detect a motion vector of an image imaged by the CMOS image sensor and a controller configured to control the light source,
- irradiating an imaging range of the CMOS image sensor by the light source;
- detecting a motion vector of the CMOS image sensor by the detector;
- and
- controlling the light source so as to cause the light source to irradiate the imaging range within a span during which the accumulation periods of the plural photoelectric conversion elements overlap with one another based on comparison of the motion vector detected by the detector with a threshold value by the controller.
Dependencies are inferred from the claim text.