Samsung Electronics Co., Ltd.

Hyun Seok Shin

Seung Eun Lee

Yong Jin Lee

Kyung Hwan Lee

Jong Ho Park

Young Deog Koh

Dong Jin Keum

Hoang Quoc Duong

Kwang Joo Kim

Young Min Yoo

Beom Gon Kim

Min Kyung Lee

Sung Woo Moon

Chang Gwon Chung

Jin O Kwak

In Ho Yun

Da Hyun Byeoun

An exterior material of a home appliance having improved corrosion resistance and fingerprint resistance by changing a treatment method of a surface of the exterior material, and the home appliance including the same, and a manufacturing method therefor are provided. The method of manufacturing the exterior material of the home appliance, the method including applying a diamond like carbon (DLC) coating on the substrate to form a DLC coating layer; and conducting anti-fingerprint coating to form the anti-fingerprint coating on the DLC coating layer.

Exterior material of home appliance, home appliance including exterior material and manufacturing method of exterior material of home appliance

A passivation surface treatment method of stainless steel that improves corrosion resistance including in a brine environment without changing the appearance of the surface of stainless steel. A passivation surface treatment method for stainless steel includes: performing degreasing of stainless steel, performing electrolytic pickling where the stainless steel that underwent the degreasing is immersed in a pickling solution having phosphoric acid (HPO) and is connected to the anode and a voltage of about 0.5 to 5.0 V for about 10 seconds or more is applied, performing electrolytic degreasing of the stainless steel, and performing electrolytic passivation where the stainless steel that underwent the electrolytic degreasing is immersed in a passivation solution including dichromic acid and chromium sulfate and a voltage of about 0.5 to 5.0 V is applied for 5 seconds or more.

Passivation surface treatment of stainless steel

A voltage regulator may include an error amplifier configured to amplify a difference between a reference voltage and a feedback voltage and generate a first amplified voltage based thereon; a power transistor between a second voltage supply node and an output node of the voltage regulator, the power transistor including a gate configured to receive a gate voltage; a buffer between a first voltage supply node and a ground, the buffer configured to generate the gate voltage based on the first amplified voltage; a voltage divider between the output node and the ground, the voltage divider configured to generate the feedback voltage based on the output voltage; and a control circuit configured to connect the output node to the ground through the gate of the power transistor based on the output voltage and the gate voltage.

Voltage regulator for suppressing overshoot and undershoot and devices including the same

A voltage regulator is provided that includes an error amplifier circuit having a reference voltage input port that receives a reference voltage, N input ports, N output ports, and N power transistors, where N is a positive integer that is greater than or equal to 2. Each of the power transistors has a gate that is connected to one of the N output ports. The error amplifier amplifies a difference between the reference voltage and each of N respective feedback voltages input to the N input ports, respectively, and outputs amplified voltages to the respective N output ports.

Voltage regulator and integrated circuit including the same

A signal path configuration method and apparatus of a wireless device are provided for avoiding radiation performance degradation caused by holding a specific part of the wireless device. A wireless device of the present invention includes a Radio Frequency (RF) unit that includes a plurality of antennas, an RF connector for RF calibration, and a detection unit for detecting connection of an RF cable, a switch for switching a signal path to one of the plurality of antennas, and a control unit for distinguishing between communication modes based on a detection signal output by the detection unit and for generating a control signal for controlling the switch to connect the signal path to one of the antennas according to the communication mode.

Wireless device and signal path configuration method thereof

A mobile terminal and personal information protection method thereof using a protection function shortcut key are provided. The personal information protection method determines, when at least one key is input, whether the key is substantially identical with one of a plurality of protection function shortcut keys, displays, when the input key is substantially identical with a protection function shortcut key, a protection function setting menu having at least one item of personal information, sets, when at least one item of personal information is selected, the protection function in association with the selected personal information, and enables the protection function on the selected personal information. Therefore, the personal information protected by the protection function is not displayed on a display unit of the mobile terminal.

Mobile terminal and method for protecting personal information thereof

Growing community of inventors

Suwon-si, South Korea

Hyun Seok Shin