JP2018129789A5 - - Google Patents

Description

An apparatus according to an embodiment of the present invention is an imaging element that outputs an image signal acquired by an imaging unit having a plurality of pixel units, the gain unit that sets a gain for the output signal of the imaging unit, and the pixel a control unit for controlling the parts storage time, a receiver for receiving control information of the target brightness values and exposure, detecting the luminance value by the image signal read from the pixel unit, the target brightness received by the receiving unit A calculation unit that calculates the gain and the accumulation time based on the value and the exposure control information, and performs exposure control of the imaging unit by the gain unit and the control unit.

Claims (14)

An imaging device that outputs an image signal acquired by an imaging unit having a plurality of pixel units,
A gain unit for setting a gain for an output signal of the imaging unit;
A control unit for controlling the accumulation time of the pixel unit;
A receiving unit for receiving control information of a target luminance value and exposure ;
A luminance value is detected from an image signal read from the pixel unit, and the gain and the accumulation time are calculated based on the target luminance value and the exposure control information received by the receiving unit, and the gain unit and the control And an arithmetic unit for performing exposure control of the imaging unit by a unit. The calculation unit calculates a change amount of a luminance value using the control information, calculates the accumulation time corresponding to the change amount, and performs exposure control of the imaging unit by the control unit. Item 2. The imaging device according to Item 1. The control information includes information indicating the timing of the diaphragm operation with respect to the image sensor,
The imaging device according to claim 2, wherein the calculation unit calculates the amount of change in the luminance value when it is determined that it is time to perform a diaphragm operation. 3. The imaging according to claim 2, wherein the calculation unit acquires information on an exposure follow-up speed based on the control information, and determines a timing at which an exposure calculation is executed following a diaphragm operation with respect to the image pickup device. element. The arithmetic unit, even when the throttle operation is performed, wherein, wherein the receiving unit performs the calculation using the target luminance value when receiving a new target luminance value Item 4. The imaging device according to Item 3. The imaging device according to claim 2, wherein the calculation unit does not accept a new target luminance value when exposure control of the imaging unit is performed by the gain unit and the control unit. The imaging device according to claim 1, wherein the calculation unit calculates a different gain for each line of the shooting screen and controls the setting of the gain unit.   A stacked structure comprising a first chip having the pixel portion and a second chip stacked on the first chip and having the arithmetic unit.
Further comprising
  The image pickup device according to claim 1, wherein the image pickup device is an image pickup device. The imaging device according to any one of claims 1 to 8 ,
An image processing apparatus comprising: an arithmetic processing unit that transmits the target luminance value and control information to the image sensor. The arithmetic processing unit, to claim 9, acquires control information of the diaphragm, and performing detection to exposure calculation luminance value of the subject from the image signal acquired by the imaging device imaging optical system comprises The imaging device described. The arithmetic processing unit performs a process of switching between a first control for performing an exposure calculation in the image sensor and a second control for performing an exposure control of the image sensor based on a calculation result performed by the arithmetic processing unit. The imaging apparatus according to claim 10 , wherein the imaging apparatus is characterized. The arithmetic processing unit performs processing to switch to the first control when the processing load amount is equal to or greater than a threshold value, and to switch to the second control when the processing load amount is less than the threshold value. Item 12. The imaging device according to Item 11 . The arithmetic processing unit performs a control using a combination of a first control for performing an exposure calculation in the image sensor and a second control for performing an exposure control of the image sensor based on a calculation result performed by the arithmetic processing unit. The imaging apparatus according to claim 10 .   Stacked imaging comprising a first chip in which a plurality of pixels for receiving light are arranged, and a second chip in which a processing circuit for processing signals from the pixels and a receiving unit for receiving setting information are arranged A communication method between an element and a control element including a communication circuit that receives a signal processed by the processing circuit from the image sensor and transmits setting information to the image sensor,
  A transmission step in which the communication circuit transmits setting information including luminance information to the imaging device;
  A calculation step for calculating a parameter for the image sensor to generate an image based on the luminance information;
  A receiving step in which the communication circuit receives the image signal generated in the calculating step;
With
A communication method characterized by the above.