Patent application number | Description | Published |
20090078975 | CMOS image sensor - There is provided a CMOS image sensor including: a photodiode receiving light to generate photogenerated charges; a transmission gate unit transmitting the photogenerated charges generated by the photodiode to a first floating diffusion area, and increasing the capacitance of the first floating diffusion area; a transfer transistor transferring the photogenerated charges of the first floating diffusion area transmitted by the transmission gate unit to a second floating diffusion area; and a drive transistor converting the photogenerated charges of the second floating diffusion area into a detection voltage. | 03-26-2009 |
20100045851 | Method of controlling mechanical shutter - There is provided a method of controlling a mechanical shutter that can ensure faster shutter speed by preventing a reduction of the shutter speed of the mechanical shutter caused by signal loss and physical loss caused by inertia. A method of controlling a mechanical shutter according to an aspect of the invention may include performing a row reset operation to remove image information remaining in an image sensor according to input of a trigger event generated by a user to acquire an image; transmitting a shutter close operation start signal for a mechanical shutter to the mechanical shutter before the row reset operation ends after a predetermined delay time from a time when the row reset operation starts; exposing the imager sensor right after the row reset operation ends; and fully closing the mechanical shutter. | 02-25-2010 |
20110190632 | ULTRASONIC DIAGNOSTIC APPRATUS AND ULTRASONIC IMAGE PROCESSING METHOD - Disclosed herein is an ultrasonic diagnostic apparatus and ultrasonic image processing method. The ultrasonic diagnostic apparatus includes an ultrasonic transmission unit; An ultrasonic probe emits; An ultrasonic reception unit; An image processing unit; A sound velocity determination unit; and A control unit. Accordingly, there is an advantage in that the actual sound velocity of a reflected wave is estimated, so that high-quality ultrasonic images can be provided, and the time required for the estimation of a sound velocity can be reduced. | 08-04-2011 |
20110194007 | CMOS IMAGE SENSOR - Disclosed herein is a Complementary Metal-Oxide Semiconductor (CMOS) image sensor. The CMOS image sensor includes a pixel array, a frame memory, and an analog-to-digital converter. The pixel array includes N unit pixels for converting optical signals, caused by light, into electric signals. The frame memory eliminates offset voltage included in reset voltage and signal voltage transmitted from the pixel array and internal offset voltage, and performs Correlated Double Sampling (CDS) on the reset voltage and the signal voltage. The analog-to-digital converter converts an analog signal, transmitted from the frame memory, into a digital signal. | 08-11-2011 |
Patent application number | Description | Published |
20080278608 | Camera module - There is provided a camera module including dual image sensors used for different purposes, which corrects optical defects of images imaged by the dual image sensors individually to suit purposes and processes the imaged images into image signals. The camera module includes: a plurality of image sensors imaging images with different optical properties from one another; a plurality of auxiliary image processors electrically connected to the plurality of image sensors, individually, the auxiliary image processors correcting different optical defects of the images from corresponding ones of the image sensors, respectively; and an image signal processing part selecting at least one of corrected images from the auxiliary image processors to process into an image signal capable of being displayed. | 11-13-2008 |
20080297605 | APPARATUS FOR IMAGE PROCESSING - An apparatus for image processing includes an image sensor including a pixel array of a plurality of pixels, the pixel array having equal vertical and horizontal lengths; a buffer storing image signals scanned at the image sensor; and a controller reading out the image signals stored in the buffer according to a gradient of the image sensor with respect to a reference direction set to a predetermined value on an X-Y plane. | 12-04-2008 |
20090136127 | APPARATUS AND METHOD OF REMOVING COLOR NOISE OF DIGITAL IMAGE - There is provided an apparatus for removing color noise including: a color interpolation unit performing color interpolation on a bayer pattern image output from an image sensor; a high-pass filter unit performing high-pass filtering on each of the pixels of the bayer pattern image to generate high-pass filtered values of each of the pixels; a high frequency region determining unit comparing pixel values of a target pixel, from which color noise is removed, and pixels adjacent to the target pixel with the high-pass filtered values to determine whether the target pixel is included in a high frequency region; and a color noise region determining unit using differences between color values of the target pixel interpolated by the color interpolation unit and determining whether the target pixel is included in a color noise region when it is determined that the target pixel is included in the high frequency region. | 05-28-2009 |
20090147099 | METHOD OF PERFORMING AUTO WHITE BALANCE IN YCBCR COLOR SPACE - There is provided a method of performing auto white balance including: setting a plurality of sections of a whole range of a value of each of Y, Cb, and Cr in the YCbCr color space, according to a size of each value; calculating an accumulated Y, Cb, and Cr value of pixels included in each of the plurality of sections; determining effective sections according to the number of the pixels included in each of the plurality of sections; calculating a mean Y, Cb, and Cr value of pixels included in all of the effective sections by using the accumulated Y, Cb, and Cr value of each of the effective sections; calculating a mean RGB value by converting the mean Y, Cb, and Cr value into an RGB color space; and determining an RGB color gain of a Bayer image outputted from an image sensor by using the mean RGB value. | 06-11-2009 |
Patent application number | Description | Published |
20080285877 | APPARATUS FOR REMOVING RINGING NOISE AND APPARATUS FOR REMOVING NOISE - Provided are an apparatus for removing ringing noise and an apparatus for removing noise. The apparatuses includes a representative value setting block dividing pixel data in one block including a plurality of pixel data into two groups through a K-means algorithm and setting a representative value in each of the groups; a parameter generator block calculating intervals and approaches between all the pixel data in the block and a pair of the representative values; and a correction block correcting an inputted pixel data value using the intervals and the approaches. | 11-20-2008 |
20080292184 | Apparatus and method for automatically adjusting white balance - Provided is an apparatus for automatically adjusting white balance, the apparatus including an Image Signal Processing (ISP) unit that processes image data; a first histogram setting unit that is connected to the ISP unit, stores the number of pixels corresponding to each Cb and Cr value of the image data applied from the ISP unit so as to set a first histogram, and sets an effective range of the first histogram; a second histogram setting unit that is connected to the first histogram setting unit, subdivides the first histogram included in the effective range so as to set a second histogram, and applies a weight to the second histogram; and a lean setting unit that is connected to the second histogram setting unit, applies preset lean values to the second histogram, to which the weight has been applied, so as to calculate a lean correction value, and delivers the calculated correction value to the ISP unit. | 11-27-2008 |
20080316329 | CAMERA MODULE - There is provided a camera module including: first and second image sensors having different optical characteristics and sensing images; first and second auxiliary image processors electrically connected to the first and second image sensors, respectively, and correcting optical defects of the images sensed by the first and second sensors, respectively; and an image signal processing section selecting at least one image between the images corrected by the first and second auxiliary image processors, and processing the selected image into an image signal that can be displayed, wherein at least one of the first and second image sensors may include: a center pixel array having a square shape; and first to fourth pixel arrays having one set of sides connected to sides of the center pixel array and having the same length as the sides of the center pixel array. | 12-25-2008 |
20090046928 | Auto white balance method - An auto white balance method includes converting a color space of an input image from an RGB color space into the Commission International de I'Eclairage (CIE) L*a*b* color space, determining at least a portion of pixels of the input image, assumed that a reference white color is changed, in a range of a predetermined L*a*b* value as pixels to be used for estimating the reference white color, determining averages of an L* value, an a* value, a b* value of the determined pixels to be used for estimating the reference white color as a reference white color estimation value, and calculating a color gain to move the reference white color estimation value to a target value for a predetermined white balance. | 02-19-2009 |
20090052798 | METHOD FOR ELIMINATING NOISE FROM IMAGE GENERATED BY IMAGE SENSOR - A method for eliminating noise from an image generated by an image sensor, includes: setting a group of pixels arranged in a square matrix and including a central pixel intended to eliminate the noise in the image and peripheral pixels arranged around the central pixel; obtaining absolute difference values between a luminance value of the central pixel and a luminance value of the peripheral pixels according to directionalities of the peripheral pixels about the central pixel; comparing the obtained absolute difference values with first critical values to determine a region to which the central pixel belongs; when the determined region is the contour region, eliminating noise of the group of the pixels according to directionality of the contour; and when the determined region is the noise region, eliminating the noise of the group of the pixels according to a noise level of the group of the pixels. | 02-26-2009 |