Samsung Electro-mechanics Co., Ltd.

Solum Co., Ltd.

Lg Electronics Inc.

Han Jin Cho

Yong Il Kwon

Tah Joon Park

Joon Hyung Lim

Myeung Su Kim

Hyun Hun Cho

Se Uk Jeon

Jeong Ho Yoo

Kyung Hee Hong

Koon Shik Cho

Sang Hoon Hwang

Jae Hyung Lee

Gwang Mi Go

Byung Hyun An

Provided is a computing technology for controlling information display of an electronic shelf label that is connected to a management server via a network and displays electronic information. The electronic shelf label measures a distance to at least one product arranged behind the electronic shelf label, and when a change in the distance occurs, activates a wireless tag reader. When product identification information acquired by the wireless tag reader is different from currently displayed product identification information, the electronic shelf labels request a label change registration to a server. Changed product information is received according to the label change registration, and the changed product information is reflected in displayed product information.

Electronic shelf label and method of controlling information display of the same

An electronic device having a self-diagnosis function is proposed. In the electronic device, a fault detector is provided on a primary side of a power board, so that fault states of a main board and a load may be detected even when the main board is broken or power is not applied to the main board. In addition, as long as commercial alternating power is input, even in a state where a power switch is turned off, the electronic device is supplied with the power, so that various types of faults in the main board and the load may be detected.

Electronic device having self-diagnosis function

A wireless communications terminal includes: an RF wake-up detection unit detecting a first RF signal including an RF ID for waking up; and a wireless communications unit waking up when the RF ID included in the first RF signal detected by the RF wake-up detection unit matches a pre-set reference ID in a sleep mode.

Wireless communications terminal having RF direct wakeup function and wakeup method thereof

Disclosed herein is a pad controlling apparatus controlling current and voltage applied to a pad, the pad controlling apparatus including: a voltage drop unit dropping the voltage applied to the pad; a switching unit connected in parallel with the voltage drop unit; and a control unit comparing a level of the dropped voltage and first reference voltage with each other and turning on the switching unit on when the level of the dropped voltage is larger than the first reference voltage. According to the present invention, even though interrupt occurs from the outside, a chip may be normally operated.

Pad controlling apparatus

Disclosed herein is a delay circuit for a low power ring oscillator. The delay circuit includes: a pair of N type transistors that receive first differential input signals Vin+ and Vin&#x2212;; a pair of P type transistors that receive second differential input signals Vin+ and Vin&#x2212;; a differential output terminal that outputs differential output signals Vout+ and Vout&#x2212; generated from the pair of N type transistors and the pair of P type transistors; an N type detector that supplies a body voltage to the pair of N type transistors; and a P type detector that supplies a body voltage to the pair of P type transistors.

Delay circuit for low power ring oscillator

Disclosed is a wireless communication apparatus having a self sensing function, which can detect an object by use of a wake-up function without employing a separate sensor. The wireless communication apparatus includes a communication unit wirelessly communicating with a server forming a wireless network, and a wake-up unit waking up the communication unit under the control of the server when the communication unit is in sleep mode, and sensing the presence of an object within a preset communication range according to a reflection signal, which is a signal reflected by the object after being transmitted from the communication unit.

Growing community of inventors

Seoul, South Korea

Han Jin Cho