Imaging system, endoscope, and control device
AssigneeOlympus Corporation
InventorHideaki Mizoguchi
Life of this patent
Estimating the term…
Abstract
An imaging system includes: an imaging unit configured to generate a video signal; a control device configured to control the imaging unit; a first signal line configured to transmit a predetermined power supply voltage to the imaging unit; and a second signal line configured to transmit the video signal to the 284 control device. The imaging unit includes an imaging element including a pixel portion configured to generate the video signal according to a light reception amount and output the generated video signal to the second signal line, and a first detector configured to detect a voltage value of a power supply voltage that has reached the imaging unit via the first signal line as a voltage value of a first power supply voltage and output the voltage value to the second signal line.
Claims11
An imaging system comprising:
- an imaging unit configured to generate a video signal by imaging a subject;
- a control device configured to control the imaging unit;
- a first signal line configured to transmit a predetermined power supply voltage to the imaging unit;
- and
- a second signal line configured to transmit the video signal to the 284 control device,
- wherein the imaging unit includes
- an imaging element including
- a pixel portion configured to generate the video signal according to a light reception amount and output the generated video signal to the second signal line, and
- a first detector configured to detect a voltage value of a power supply voltage that has reached the imaging unit via the first signal line as a voltage value of a first power supply voltage and output the voltage value to the second signal line, and
- the control device includes:
- a power source configured to supply a voltage value of a second power supply voltage to the imaging element via the first signal line;
- a second detector configured to detect a current value in the first signal line;
- a third detector configured to detect the voltage value of the second power supply voltage supplied by the power source;
- a calculator configured to calculate a resistance value of the first signal line based on the voltage value of the first power supply voltage, the current value, and a voltage detection value of the second power supply voltage detected by the third detector;
- and
- a power source controller configured to adjust the voltage value of the second power supply voltage to be supplied to the imaging element by the power source based on the current value, the resistance value, and a voltage value of a target power supply voltage in the imaging element, and supply the adjusted second power supply voltage to the first signal line.
An endoscope comprising:
- an imaging unit configured to generate a video signal by imaging a subject;
- a connector that is connectable to a control device;
- a first signal line configured to transmit a predetermined power supply voltage to the imaging unit;
- and
- a second signal line configured to transmit the video signal to the control device,
- wherein the imaging unit includes
- an imaging element including
- a pixel portion configured to generate the video signal according to a light reception amount and output the generated video signal to the second signal line, and
- a first detector configured to detect a voltage value of a power supply voltage that has reached the imaging unit via the first signal line as a voltage value of a first power supply voltage and output the voltage value to the second signal line, and
- the connector includes:
- a power source configured to supply a second power supply voltage to the imaging element via the first signal line;
- a second detector configured to detect a current value in the first signal line;
- a calculator configured to calculate a resistance value of the first signal line based on the voltage value of the first power supply voltage, the current value, and a voltage detection value of the second power supply voltage;
- and
- a power source controller configured to adjust the voltage value of the second power supply voltage to be supplied to the imaging element by the power source based on the current value, the resistance value, and a voltage value of a target power supply voltage which is an optimum value of the power supply voltage in the imaging element, and supply the adjusted second power supply voltage to the first signal line.
A control device electrically connectable to an imaging unit configured to generate a video signal by imaging a subject by using a first signal line configured to transmit a predetermined power supply voltage to the imaging unit and a second signal line configured to transmit the video signal, the control device comprising:
- a power source configured to supply a second power supply voltage to the imaging unit via the first signal line;
- a second detector configured to detect a current value in the first signal line;
- a third detector configured to detect a voltage value of the second power supply voltage;
- a calculator configured to calculate a resistance value of the first signal line based on a voltage value of a first power supply voltage that has reached the imaging unit via the first signal line and that is detected in the imaging unit, the current value, and a voltage detection value of the second power supply voltage detected by the third detector;
- and
- a power source controller configured to adjust the voltage value of the second power supply voltage to be supplied to the imaging unit by the power source based on the current value, the resistance value, and a voltage value of a target power supply voltage which is an optimum value of the power supply voltage in the imaging unit, and supply the adjusted second power supply voltage to the first signal line.
Dependencies are inferred from the claim text.