Abstract: An autofocus method includes receiving a left image having a first blurriness value and a right image having a second blurriness value, filtering the left image so that the first blurriness value becomes the same as the second blurriness value, and generating a control signal for controlling the lens module based on a difference between a third blurriness value of a filtered left image and the second blurriness value.

Abstract: An image signal processor includes a memory configured to store a table, the table including a plurality of point spread functions (PSFs), a PSF selection circuit configured to output at least one of the plurality of PSFs stored in the table based on selection information, a disparity extractor configured to extract a disparity value from image data corresponding to pixel signals output from at least one pixel of a plurality of pixels included in an image sensor, and a processing circuit configured to generate pixel location information for the at least one pixel. Each of the pixels of the plurality of pixels includes a plurality of photoelectric conversion elements. The selection information includes the disparity value and the pixel location information.

Abstract: An image sensor includes: an image obtainer configured to generate image information by converting received light into an electrical signal; a first detector configured to detect first time information regarding a first time at which the image obtainer acquires the image information; a second detector configured to receive a plurality of pieces of movement information indicating movements of the image obtainer, and detecting second time information regarding a second time at which at least one piece of movement information among the plurality of pieces of movement information is received. A single port is configured to output the image information, the first time information, output movement information selected from among the plurality of pieces of movement information, and the second time information regarding the selected output movement information.

Abstract: An autofocus method includes receiving a left image having a first blurriness value and a right image having a second blurriness value, filtering the left image so that the first blurriness value becomes the same as the second blurriness value, and generating a control signal for controlling the lens module based on a difference between a third blurriness value of a filtered left image and the second blurriness value.

Abstract: A method of enhancing a low-light image includes receiving a first image from an RWB image sensor, receiving a second image from an RGB image sensor, receiving an illumination value from an illumination sensor, and selecting at least one of the first and second images and generating a third image using the at least one selected image.

Abstract: A method of controlling parameters for image sensors includes; receiving a first image and a second image, calculating first feature values related to the first image and second feature values related to the second image; generating comparison results by comparing the first feature values of fixed regions and first variable regions of the first image with the second feature values of fixed regions and first variable regions of the second image, and controlling at least one parameter on the basis of the comparison results.

Abstract: An image sensor includes a pixel array including a plurality of pixels configured to output pixel signals corresponding to a plurality of row lines; a row driver configured to output a plurality of control signals for controlling operations of the plurality of pixels; a plurality of analog-to-digital converters configured to perform analog-to-digital conversion on the pixel signals output from the plurality of pixels via a plurality of column lines so as to generate digital pixel signals, and to output the digital pixel signals; and a timing generator configured to generate a line control signal, the pixel array being configured to output the pixel signals corresponding to the plurality of row lines responsive to the line control signal. The pixel signals are output in a predetermined pixel unit in parallel from at least one row line among the plurality of row lines responsive to the row driver receiving the line control signal.

Abstract: An image signal processor includes a memory configured to store a table, the table including a plurality of point spread functions (PSFs), a PSF selection circuit configured to output at least one of the plurality of PSFs stored in the table based on selection information, a disparity extractor configured to extract a disparity value from image data corresponding to pixel signals output from at least one pixel of a plurality of pixels included in an image sensor, and a processing circuit configured to generate pixel location information for the at least one pixel. Each of the pixels of the plurality of pixels includes a plurality of photoelectric conversion elements. The selection information includes the disparity value and the pixel location information.

Abstract: An iris recognition device includes a first lens and a second lens configured to capture images for recognizing a user's iris; a first filter configured to filter an image input via the first lens and output a first signal; a second filter configured to filter an image input via the second lens and output a second signal; and an image sensor including a plurality of sub-pixel groups which each include a plurality of pixels and are configured to receive the first and second signals and output a first image signal and a second image signal that respectively correspond to the first and second signals.

Abstract: A circuit includes a luminance average value output unit for extracting luminance values from pixel data of the first and the second frames to generate first luminance average values for pixel lines of the first frame and second luminance average values for pixel lines of the second frame, a flicker curve generating unit for subtracting the second luminance average values from the first luminance average values, thereby generating a flicker curve, and a flicker detecting unit for extracting a plurality of local minimum points from the flicker curve, calculating a distance between each two neighboring local minimum points of the extracted local minimum points, and determining whether the flicker is present based on the distances and the frequency numbers of the distances.

Abstract: A dual camera system includes a first bayer sensor block for outputting an external bayer image data constituted with photosensitive values of respective photosensitive cells which are sensitive to an incident light and a data processing unit, including a second bayer sensor block for outputting an internal bayer image data, for converting the external and the internal bayer image data into an image frame data with a predetermined format.

Abstract: A circuit includes a luminance average value output unit for extracting luminance values from pixel data of the first and the second frames to generate first luminance average values for pixel lines of the first frame and second luminance average values for pixel lines of the second frame, a flicker curve generating unit for subtracting the second luminance average values from the first luminance average values, thereby generating a flicker curve, and a flicker detecting unit for extracting a plurality of local minimum points from the flicker curve, calculating a distance between each two neighboring local minimum points of the extracted local minimum points, and determining whether the flicker is present based on the distances and the frequency numbers of the distances.

Abstract: A circuit includes a luminance average value output unit for extracting luminance values from pixel data of the first and the second frames to generate first luminance average values for pixel lines of the first frame and second luminance average values for pixel lines of the second frame, a flicker curve generating unit for subtracting the second luminance average values from the first luminance average values, thereby generating a flicker curve, and a flicker detecting unit for extracting a plurality of local minimum points from the flicker curve, calculating a distance between each two neighboring local minimum points of the extracted local minimum points, and determining whether the flicker is present based on the distances and the frequency numbers of the distances.

Abstract: Disclosed is an apparatus for processing a digital signal in an image sensor. The apparatus includes: a line memory unit for storing an inputted digital signal of red (R), green (G) and blue (B); a kernel generation unit for generating a plurality of kernels after receiving the RGB digital signal from the line memory unit; a false color detection unit for detecting false colors by using the plurality of kernels; an edge detection unit for detecting edges by using the plurality of kernels; an interpolation unit for interpolating the RGB digital signal from the line memory unit; a color space conversion unit for converting the interpolated RGB digital signal into a YCbCr signal; and an image enhancement unit for suppressing the false colors and enhancing the edges in the YCbCr signal in response to outputs of the false color detection unit and the edge detection unit.

Abstract: There are provided a pixel array capable of detecting and removing a flicker noise, an image sensor employing the pixel array and an automatic flicker noise detecting method capable of effectively detecting and removing the flicker noise of the image sensor. For the purpose, a pixel array of an image sensor includes a pixel group, having N×M number of unit pixels, for detecting an image signal, N and M being integers, and a pixel column, allocated along a row direction of the pixel group, for detecting an average frequency of a corresponding pixel row to thereby detect the flicker noise.

Abstract: A circuit includes a luminance average value output unit for extracting luminance values from pixel data of the first and the second frames to generate first luminance average values for pixel lines of the first frame and second luminance average values for pixel lines of the second frame, a flicker curve generating unit for subtracting the second luminance average values from the first luminance average values, thereby generating a flicker curve, and a flicker detecting unit for extracting a plurality of local minimum points from the flicker curve, calculating a distance between each two neighboring local minimum points of the extracted local minimum points, and determining whether the flicker is present based on the distances and the frequency numbers of the distances.

Abstract: A dual camera system includes a first bayer sensor block for outputting an external bayer image data constituted with photosensitive values of respective photosensitive cells which are sensitive to an incident light and a data processing unit, including a second bayer sensor block for outputting an internal bayer image data, for converting the external and the internal bayer image data into an image frame data with a predetermined format.

Abstract: Disclosed is an apparatus for processing a digital signal in an image sensor. The apparatus includes: a line memory unit for storing an inputted digital signal of red (R), green (G) and blue (B); a kernel generation unit for generating a plurality of kernels after receiving the RGB digital signal from the line memory unit; a false color detection unit for detecting false colors by using the plurality of kernels; an edge detection unit for detecting edges by using the plurality of kernels; an interpolation unit for interpolating the RGB digital signal from the line memory unit; a color space conversion unit for converting the interpolated RGB digital signal into a YCbCr signal; and an image enhancement unit for suppressing the false colors and enhancing the edges in the YCbCr signal in response to outputs of the false color detection unit and the edge detection unit.

Abstract: A CMOS image sensor for improving a characteristic of transmittance therein is provided by forming a convex-shaped color filter pattern that acts as a micro-lens. The CMOS image sensor includes a semiconductor structure having a photodiode and a peripheral circuit, an insulating layer that is formed on the semiconductor structure and that has a trench, and a convex-shaped color filter pattern formed on the insulating layer and covering the trench.

Abstract: A CMOS image sensor for improving a characteristic of transmittance therein is provided by forming a convex-shaped color filter pattern that acts as a micro-lens. The CMOS image sensor includes a semiconductor structure having a photodiode and a peripheral circuit, an insulating layer that is formed on the semiconductor structure and that has a trench, and a convex-shaped color filter pattern formed on the insulating layer and covering the trench.