Electronics and Telecommunications Research Institute

Eui Suk Jung

Byoung Whi Kim

Yong Tae Lee

Eun Jung Kwon

Hyun Ho Park

Sung Won Byon

Sang Soo Lee

Jie Hyun Lee

Seung Hyun Jang

Young Soo Park

Dong Man Jang

Chul Soo Lee

Min Soo Kim

Won Geun Ryu

Seung-Hyun Cho

Jung Hak Kim

Kang Bok Lee

Kwang Ok Kim

Tae Yeon Kim

Seung Il Myong

Jea Hoon Yu

Hyun Woo Lee

Seung Hyun Cho

Hyeong Ho Lee

Young Ho Kim

Young Il Kim

Han-Hyub Lee

Myung-Sun Baek

Hyunho Park

Seung-Hyun Jang

Jong Hoon Lee

Eun Gu Lee

Sungwon Byon

Chul-Soo Lee

Won-Jae Shin

The apparatus for validating various kinds of data and a digital twin operation includes a validation target data selector configured to select a target to be validated among various kinds of input data, a data validator configured to validate individual data for each type of data selected for validation, and a data linkage validator configured to validate various kinds of multiple data by linking the various kinds of multiple data in order to detect an error in a process of linking the various kinds of multiple data.

Apparatus and method for validating various kinds of data and digital twin operation

Provided is an emergency dispatch command information management method capable of providing relevant emergency dispatch command information. The method includes: a step of receiving report input data from a reporter terminal; a step of generating reception input data of a recipient on the basis of the report input data; a step of generating first emergency dispatch command information on the basis of the reception input data; a step of detecting at least one second emergency dispatch command information relevant to the generated first emergency dispatch command information; and a step of transmitting the first and second emergency dispatch command information to a command receiver terminal.

Emergency dispatch command information management system, device, and method capable of providing relevant emergency dispatch command information

Provided are an object tracking system and an object tracking method. The object tracking system includes: a terminal identifier and reference time providing module configured to receive an identifier of a terminal and a reference time for tracking an object corresponding to the identifier; a cross-CCTV detection module configured to detect a cross-CCTV for the terminal by using a CCTV installation information and a location of the terminal before the reference time; a basic image detection module configured to detect an object repeatedly appearing in the cross-CCTV as a basic image; a current-CCTV detection module configured to detect a current-CCTV currently recording the terminal by detecting a location and a moving direction of the terminal after the reference time; an object detection module configured to detect an object appearing in the current-CCTV based on the location and the moving direction of the terminal after the reference time; and an object tracking module configured to track an object corresponding to the identifier by determining whether the detected object from the current-CCTV and the basic image.

Object tracking system and object tracking method

Disclosed is a method of processing an object in an image and a system for the same. According to an embodiment of the present disclosure, there is provided a method of processing an object in an image, the method including: detecting a first object from a first image obtained by a first network camera; detecting a second object from a second image obtained by a second network camera; checking similarity between the first and second objects in consideration of feature information of the first and second objects, installation location information of the first and second network cameras, and location information of a terminal device; and determining whether the first object is equal to the second object on the basis of the similarity between the first and second objects.

Method of processing object in image and apparatus for same

A network management apparatus and method for remotely controlling a state of an IT device in order to use WOL to change a remote device from an inactive state to an active state over an IP network. The network management apparatus includes a detection pattern generator, a remote state controller, and a wake-up cause analyzer. By activating an inactivated PC connected over an IP network and positioned at a remote site using WOL to control a state of another IT device interoperating through the IP network as well as a state of the PC, it is possible to inactivate the device without unnecessarily having to leave the device on and then control the device as necessary, thereby reducing power consumption of the device and extending a lifetime of the device.

Network management apparatus and method for remotely controlling state of IT device

A network cooperation-based low power type charged broadcasting set-top box and a controlling method therefor, the set-top box sub-dividing a standby mode of the set-top box into an active standby mode, in which only background functions are processed without processing a main function, and a passive standby mode, in which no functions are processed; extending the passive standby mode occupation time to more than that of the active standby mode; and including a way of transitioning between operating modes by exchanging information regarding the set-top box through an inter-cooperation between a charged broadcasting network and the set-top box, thereby reducing the power consumption of a processor (SoC) which processes multimedia contents and minimizing the power consumption while the set-top box is in standby mode.

Network cooperation-based low power type charged broadcasting set-top box and controlling method therefor

A method of acquiring an Internet protocol (IP) address to control a standby mode of a set-top box, and the set-top box and a power management server performing the method are disclosed. The method may include determining whether a state of the set-top box changes from a broadcasting state in which a broadcasting service is provided to a passive standby state in which a network connection between the set-top box and a headend providing the broadcasting service is blocked, receiving state information associated with an IP address allocated to the set-top box for the network connection in response to the state of the set-top box changing to the passive standby state, and transmitting, to the set-top box, a state change command to maintain the network connection for the IP address allocated to the set-top box based on the received state information.

IP address acquisition method for controlling standby mode of set-top box, and set-top box and power management server performing the method

A peak detector using a charge pump is provided. The peak detector includes a differential amplifier configured to receive an input signal to be detected through an input node and amplify the received signal; a current control logic configured to create two or more current control signals by comparing a signal output from the differential amplifier with two or more reference voltages; a mirror current source portion comprising two or more mirror current sources configured to be driven respectively by the current control signals from the current control logic; a capacitor configured to be charged or discharged by currents output from the mirror current sources; and a reset circuit configured to reset a voltage of the capacitor.

Peak detector using charge pump and burst-mode transimpedance amplifier

Provided is a hybrid passive optical network (PON) system. The hybrid PON system of wavelength division multiplexing (WDM)/time division multiplexing (TDM) may include an optical line terminal (OLT) and an optical network unit (ONU). The OLT and the ONU may transmit a signal based on wavelength reuse using a seed light source and a reflective modulator. The light source may include a seed light source having a single wavelength, two seed light sources having different wavelength bands, and a light source having a wavelength tunable characteristic.

Hybrid passive optical network system

A modulation method of an optical modem and a signal transmission apparatus performing the method are disclosed. The modulation method of the optical modem includes an optical interface providing a signal to a light source, a photo detector receiving reflected light by an optical link when output light from the light source based on the provided signal is reflected by the optical link, the photo detector measuring and determining characteristics of the optical link using the reflected light, and the optical modem determining a power level and a modulation method for each subcarrier based on the characteristics of the optical link.

Signal transmission apparatus and optical modem modulation method

A wavelength tunable light source includes: an optical gain medium generating light; a wavelength tunable filter positioned on a optical path and transmitting or reflecting only a predetermined wavelength generated from and injected into the optical gain medium; a first housing where the optical gain medium and the wavelength tunable filter are mounted; and an optical fiber block providing the optical wave having the predetermined wavelength come from the wavelength tunable filter, wherein the wavelength tunable filter comprised of a dielectric thin-film filter formed by alternately stacking a first dielectric thin film layer and a second dielectric thin film layer having different refractive index.

Wavelength tunable light source

In a method of allocating a bandwidth of a passive optical network, downward data are transmitted by varying a wavelength based on a wavelength division method and upward data are transmitted using a time division method. Thereby, by efficiently allocating a network bandwidth, data can be transmitted and by realizing statistical multiplexing, transmission efficiency can be improved.

Method of allocating bandwidth of passive optical network

The present invention relates to an apparatus with reconfiguration function and signal gathering function. The apparatus with reconfiguration function and signal gathering function according to the present invention comprises a signal gathering unit which gathers at least one alarm digital alarm signal, an alarm signal address setting unit where the address of the alarm signal gathering unit is setup; and an alarm signal collection controller which outputs the at least one digital alarm signal through serial bus. Therefore, address is allocated to a plurality of digital signals and thus the number of necessary components decreases and the embodiment area decreases, as well.

Apparatus with reconfiguration function and signal gathering function

Provided are a fault localization apparatus based on an optical communication network and a method thereof. In the fault localization apparatus according to the present invention, a downstream light source is used as a monitoring optical signal instead of using an additional monitoring light source and a subcarrier multiplexing (SCM) monitoring pulse signal of a certain frequency band having no interference with a frequency band of a downstream data signal is used and thus a fault position may be detected at low cost.

Fault localization apparatus for optical line using subcarrier multiplexing (SCM) monitoring signal and method thereof

An apparatus for measuring Optical Beat Interference (OBI) noise is applied to a central office in a Subcarrier Multiple Access (SCMA) optical network. The central office includes an optical receiver for converting an optical signal received through an optical fiber into an electrical signal. The OBI noise measurement apparatus includes a power divider, first and second filters, and a power measurement unit. The power divider divides the power of a signal output from the optical receiver into two signals. The first filter passes one of the two signals divided by the power divider in a low band of frequencies below a band of subcarrier signals. The second filter passes the other of the two signals divided by the power divider in a high band of frequencies above the band of subcarrier signals. The power measurement unit measures the power of each signal passed through the first and second filters.

Growing community of inventors

Daejeon, South Korea

Eui Suk Jung