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June 23, 2017

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PDFA (Phase Detection Auto Focus)

The camera has become more and more important in smartphones and people have higher requirements for its focusing speed. A lot of methods to assist focusing are available in the current market, including laser, infrared, and phase focusing. Focusing is the process whereby a motor moves to bring the subject into focus. Focusing algorithms are divided into contrast detection and phase detection auto focus (PDAF). Let us look into detail on how PDAF Technology works. In contrast focus (traditional auto focus systems) , the moment you start your camera app, a lot of calculations are done by the processor to achieve the correct focus. First, the camera software triggers the lens to move and scan through its entire range of possible focus points, then it returns to whichever settings that provides the sharpest focus. Contrast detection requires the motor to move to different positions until the image displayed on the viewfinder shows the highest contrast. Contrast detection ...

Megha pixel

This example shows an image with a portion greatly enlarged, in which the individual pixels are rendered as small squares and can easily be seen. A photograph of sub-pixel display elements on a laptop's LCD screen In digital imaging , a pixel , pel , [1] dots , or picture element [2] is a physical point in a raster image , or the smallest addressable element in an all points addressable display device ; so it is the smallest controllable element of a picture represented on the screen. The address of a pixel corresponds to its physical coordinates . LCD pixels are manufactured in a two-dimensional grid , and are often represented using dots or squares , but CRT pixels correspond to their timing mechanisms . Each pixel is a sample of an original image; more samples typically provide more accurate representations of the original. The intensity of each pixel is variable. ...

Samsung Group SuccessStory

Samsung Group SuccessStory Samsung is a Multi-national South-Korean Company founded in 1938. It was originally meant to be a trading company. Right now it has a number of holding companies and subsidiaries united under the brand name of Samsung. It is the largest South Korean conglomerate. Samsung History Samsung started in 1938 as a small trading company located in Su-dong near Daegu city.It was founded by Lee Byung-chul. He had only forty employees and the company’s major business was production and distribution of groceries within the city. In 1947, as the company began to grow Lee put up their office in Seoul. He soon started a sugar refinery which also succeeded in a very short span of time. Lee was a very ambitious person and in 1954 built the largest woollen mill in Korea located in the suburbs of Daegu city.

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