Samsung Electro-mechanics Co., Ltd.

Chae Dong Go

Kyoung Soo Kwon

Jong Jin Lee

Deuk Hee Park

Youn Joong Lee

Ha Woong Jeong

Sang Suk Kim

Disclosed herein is a photodiode cell, including: a first-type substrate; a second-type epitaxial layer disposed on the first-type substrate; heavily-doped second-type layers, each having a small depth, formed on the second-type epitaxial layer; and heavily-doped first-type layers, each having a narrow and shallow section, disposed on the second-type epitaxial layer and formed between the heavily-doped second-type layers, wherein the first-type and second-type have opposite doped states.

Photodiode cell structure of photodiode integrated circuit for optical pickup and method of manufacturing the same

There is provided a digital-analog converter capable of easily extending the resolution that can easily extend the resolution by a simple circuit implementation when a 10-bit digital-analog converter is configured on the basis of an 8-bit digital-analog converter used in a display driving IC, and prevent an increase in area of the display driving IC. A digital-analog converter capable of easily extending the resolution according to an aspect of the invention includes a voltage dividing unit including a plurality of resistors connected in series with each other between operating voltage terminals to divide operating voltages into a plurality of voltages at connection nodes of the plurality of resistors, a decoder unit providing a plurality of switching signals including a first switching signal for selecting a voltage and a second switching signal for controlling the current, a switch unit selecting two voltages from the plurality of voltages divided by the voltage dividing unit according to the first switching signal, a comparing unit comparing the two voltages with each other selected by the switching unit to output a reference current corresponding to a difference between the two voltages, a current control unit controlling a feedback current according to the second switching signal of the decoder unit, and an adding unit transmitting the feedback current to the current control unit and adding one voltage between the two voltages selected by the switch unit and a feedback voltage determined according to the feedback current.

Digital-analog converter capable of easily extending resolution

An RF modulator includes a C/L delay compensation function of compensating for a delay of a luminance signal with respect to a chrominance signal occurring during demodulating a video signal in a TV set. The RF modulator includes a C/L delay compensation unit delaying a luminance signal by 170 nsec and combining the delayed luminance signal with a chrominance signal to output a composite image signal having a C/l delay of &#x2212;170 nsec and a frequency modulation unit modulating the video signal received from the C/L delay compensation unit into a high frequency signal of a predetermined broadcasting channel in a single module or package. The RF modulator outputs a video signal having the luminance signal delayed by 170 nsec with respect to the chrominance signal and complies with a C/L delay standard without adding any additional C/L delay compensation unit to the RF modulator.

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Gyunggi-do, South Korea

Chae Dong Go