Patent classifications
H04N5/365
Solid-state imaging device, method for driving solid-state imaging device, and imaging device
A solid-state imaging device includes: a pixel unit in which a plurality of unit pixels is arranged in rows and columns, the unit pixels performing photoelectric conversion of incident light to generate pixel information; and a secondary memory unit in which a plurality of unit memories is arranged in rows and columns, the unit memories holding the pixel information, wherein each of the columns in the secondary memory unit includes, as a unit memory block, the unit memories in the column, the secondary memory unit includes: a memory signal line provided for each of the columns in the memory unit; and a selection transistor provided between the unit memory block and the memory signal line, and shared by the plurality of unit memories in the unit memory block.
Image pickup apparatus capable of selectively using one of correction values to correct image signals, image pickup system, signal processing method, and non-transitory computer-readable storage medium
An image pickup apparatus includes an image pickup element including a plurality of pixels corresponding to a plurality of respective micro lenses and the first photoelectric conversion portion and the second photoelectric conversion portion that are included in each of the pixels and share a corresponding one of the micro lenses, and a signal processing unit configured to correct an addition signal of outputs from the first photoelectric conversion portion and the second photoelectric conversion portion included in each of the pixels and a first signal generated from a plurality of signals of the first photoelectric conversion portions corresponding to the micro lenses, and the signal processing unit corrects the addition signal for each of the pixels and corrects the first signal for the first photoelectric conversion portions.
Image sensor with active clamp to suppress transfer gate feedthrough
An image sensor may include an array of image pixels arranged in rows and columns. Each column of pixels may be coupled to current source transistors and active clamping circuitry. The active clamping circuitry may be configured to sample a reset voltage and to selectively pull down the column line after a charge transfer operation if the column line exceeds the previously sampled reset voltage. The active clamping circuitry can reduce settling time during low light conditions while eliminate column fixed pattern noise.
IMAGE CAPTURING APPARATUS, CONTROL METHOD THEREOF, AND STORAGE MEDIUM
An image capturing apparatus comprises an image sensor; a readout unit that reads out an added signal and that independently reads out the signal of the first photoelectric conversion portion; a calculation unit that calculates a signal corresponding to a signal of the second photoelectric conversion portion by subtracting the signal of the first photoelectric conversion portion from the added signal; a correlation calculation unit that performs correlation calculation for the signal of the first photoelectric conversion portion and the signal corresponding to the signal of the second photoelectric conversion portion; and a subtraction unit that subtracts, from the result of the correlation calculation on an object image by the correlation calculation unit, a correction value for correcting noise caused by obtaining the signal corresponding to the signal of the second photoelectric conversion portion.
OPTICAL NON-UNIFORMITY COMPENSATION (NUC) FOR PASSIVE IMAGING SENSORS USING MICRO-ELECTRO-MECHANICAL SYSTEM (MEMS) MICRO-MIRROR ARRAYS (MMAS)
A passive imaging sensor includes a plurality of optical elements in which at least one includes one or more Micro-Electro-Mechanical System (MEMS) Micro-Mirror Arrays (MMAs) having a plurality of independently and continuously controllable mirrors that at least tip and tilt in 2 DOF and may tip, tilt and piston in 3 DOF. In an operational mode, the mirrors are tipped and tilted, and possibly pistoned, such that the optical radiation is focused at the pixelated detector to read out an image of the scene. NUC coefficients such as offset and/or gain are applied to either the output signals of the detector or to the image to form the NUC'd images. In a calibration mode, the mirrors are tipped and tilted and/or pistoned to spatially or temporally blur the image or to re-direct the FOV to one or more on-board calibration sources to generate a uniform image from which to calculate and update the NUC coefficients.
Imaging device and defective pixel correction method
Provided is an imaging device and a defective pixel correction method which can improve the accuracy of a defective pixel correction. In a case where a correction target pixel is a G pixel, a defective pixel correction unit determines whether there is an edge portion around the G pixel; when there is an edge portion, the defective pixel correction unit performs a defect correction by using G pixels adjacent to the G pixel in a X shaped direction; when there is no edge portion, it performs the defect correction using G pixels adjacent to the G pixel in the cross direction.
Radiation imaging apparatus and radiation imaging system
A radiation imaging apparatus includes a unit constituted by arranging blocks in line and an information processing unit. Each of the blocks includes a conversion element configured to generate an image signal corresponding to radiation, a switching element connected between the conversion element and a column signal line, a detection element configured to detect radiation, and a detection signal line connected to the detection element. The information processing unit corrects a signal from the detection element, by using a value of the signal based on a parasitic capacitance between the conversion elements arranged on the same column as a column of the detection element.
Thermal detection systems, methods, and devices
Systems, methods, and devices for thermal detection. A thermal detection device includes a visual camera, a thermal detector, a controller, a user interface, a display, and a removable and rechargeable battery pack. The thermal detection device also includes a plurality of additional software and hardware modules configured to perform or execute various functions and operations of the thermal detection device. An output from the visual camera and an output from the thermal detector are combined by the controller or the plurality of additional modules to generate a combined image for display on the display.
Flexible readout and signal processing in a computational sensor array
A computational sensing array includes an array of sensing elements. In each sensing element, a first signal is generated from a transducer. A second signal is produced by a collection unit in response to receiving the first signal. The second signal may be modified, in a conditioning unit. A sensing element preprocessing unit generates a word representing the value of the modified second signal, and may produce an indication of change of the first signal. A current value of the word may be stored in a state holding element local to the sensing element, and a previous value of the word may be retained in a further state holding element local to the sensing element.
Image capturing apparatus, image capturing system, and control method for the image capturing apparatus
An image capturing apparatus comprises an image capturing unit that includes an image sensor that has an effective pixel region and a reference pixel region which outputs a reference signal for correcting an output signal of the effective pixel region. In a case where a predetermined condition is satisfied, a reduction unit reduces a data amount of reference pixel region data that corresponds to the reference pixel region in an image data obtained by the image capturing unit. A recording unit records the image data after the processing performed by the reduction unit.