Electronics and Telecommunications Research Institute

Korea Telecommunication Authority

Youn Kwae Jeong

Wan Ki Park

Hong Soon Nam

Chang Sic Choi

Jae Young Kim

Kwang Roh Park

Il Woo Lee

Jin Soo Han

Hyeong Jun Park

Tae Hyung Kim

Intark Han

Young Woo Choi

Dong J Shin

Jongwoo Choi

Jae H Hong

Jung Chul Seo

Sung Il Nam

In Tark Han

A dynamic high-resolution ADC according to an example embodiment may include a dynamic amplifier configured to amplify, by as much as a first gain, the sampled-and-held analog signal received from the sample and hold circuit; DAC configured to convert a digital signal input from a decoder into an analog signal; a residue signal amplifier connected to the dynamic amplifier and the DAC and configured to calculate a difference between an output signal of the dynamic amplifier and an output signal of the DAC and amplify the difference by as much as a second gain; an ADC connected to the residue signal amplifier and configured to convert an output signal of the residue signal amplifier into a digital signal; and a decoder connected to the ADC and configured to decode, into digital data, an output signal of the ADC input by the ADC.

Dynamic high-resolution analog to digital converter and operating method thereof

A method and system for energy improvement verification of buildings. An energy improvement learning method includes receiving building characteristic information related to an existing building constructed in the past and a diagnosis result of energy diagnosis performed based on the building characteristic information, receiving a result of renovating the existing building using energy saving schemes suitable for the diagnosis result, and generating an energy improvement learning model for the existing building by learning the building characteristic information and the renovation result.

Method and system for energy improvement verification of buildings

An apparatus and method for managing energy are disclosed herein. The apparatus for managing energy includes a State-of-Health (SOH) determination unit and an energy distribution unit. The SOH determination unit collects information about energy storage systems and energy facilities, and determines the SOH of each of the energy storage systems based on the information. The energy distribution unit distributes energy stored in the energy storage system to loads inside a building based on the information and the SOH.

Apparatus and method for managing energy in building based on state of health of energy storage system

There are provided a home gateway system providing an optical communication packet data interface function and a home broadcast service providing method using the same. The home gateway system is constructed to include a network processor having two Ethernet interfaces connected to a system control processor of a home gateway and an Ethernet switch having an Ethernet multicast traffic processing/IGMP snooping function based on an Ethernet L2 multicast MAC table to thereby simultaneously provide a broadcast service such as a CATV broadcast service, and an Internet data service to a plurality of hosts in a home. In case of a broadcast service, the home gateway system converts a broadcast stream into an IP multicast packet and then processes the broadcast IP multicast packet by an L2 multicast function of an Ethernet switch, thereby making it possible to directly transmit the broadcast IP multicast packet to a host without the help of the control processor.

Home gateway system for providing optical communication packet data interface function and home broadcast service providing method using the same

Disclosed are an apparatus for distributing same/different digital broadcasting streams in a heterogeneous home network and a method thereof The apparatus includes a home gateway, and a home server, connected to the home gateway through Ethernet and also connected to a PC, a second IP STB, a 1394 STB, an HAS (Home Auto System) and an HDTV receiver, for outputting a ground-wave broadcast, a satellite broadcast and a cable broadcast to their HDTV receivers, respectively, through the second IP STB and the 1394 STB if the ground-wave broadcast, the satellite broadcast and the cable broadcast are received through coaxial cables, interworking with the HAS in order to control home appliances, and directly outputting the broadcast to the HDTV receiver through a built-in STB function. According to the apparatus, a user having a plurality of HDTV receivers at home can simultaneously view a plurality of HDTV broadcasts irrespective of the broadcasting systems when a plurality of heterogeneous home networks match through a home network matching device.

Apparatus for distributing same/different digital broadcasting streams in heterogeneous home network and method thereof

A home server for service convergence and energy-saving, and a method for controlling the same are disclosed to provide broadcast services, Internet services, game platform services, and a broadband network distribution function required by each home network. The home server includes a broadcast processor, a service, a network distribution, a power-supply unit for providing a power-supply signal to each module of the home server, and a power-supply controller. The power-supply controller controls on/off operations of the power-supply signal transmitted from the power-supply unit to each module of the home server according to services and operation states of the service processor and the network distribution unit.

Home server capable of implementing energy-saving and service convergence and method for controlling the same

An apparatus for reducing power consumption in a digital broadcast receiver is provided. An AC-to-DC converter converts input AC power into DC power that can be used in the receiver. A power control switch selectively supplies the DC power from the converter to a tuner unit and a decoder according to a command of a controller. The tuner unit receives broadcast channel signals and demodulates the received broadcast channel signals according to the respective broadcast formats. The decoder receives the demodulated broadcast signals from the tuner unit and decodes analog/digital broadcast signals. A multimedia output port is connected between the decoder and the display unit to transfer the audio/video output signals from the decoder to the display unit. The controller detects the state of the display unit through the multimedia output port to control whether to supply the DC power through the power control switch.

Apparatus and method for reducing power consumption in digital broadcast receiver

A circuit for determining whether a digital circuit clock is operating normally. It includes a monitoring clock receiver for receiving a monitoring clock signal, a counter reset generator which generates a first reset signal in response to the monitoring clock signal, and a reset signal receiver for receiving a second reset signal and synchronizing the second reset signal with the monitoring clock signal. The second reset signal is also used to initialize a digital circuit pack upon power-on. The circuit further includes a monitoring counter circuit for sampling and counting a reference clock signal in response to the first and second reset signals to monitor the monitoring clock signal. The reference clock signal has a frequency twice that of the monitoring clock signal. A NAND logic unit is provided for outputting the monitored result in response to an output signal from the monitoring counter circuit so that the user can determine a clock error according to the monitored result. An output hold circuit is further provided for holding the monitored result from the NAND logic unit when the monitoring clock signal is abnormal.

Growing community of inventors

Daejeon, South Korea

Youn Kwae Jeong