Intellectual Discovery Co., Ltd.

Samsung Display Co., Ltd.

Hyundai Electronics Industries Co. Ltd.

Kookmin University

Inha-industry Partnership Institute

Jae Hyeong Kim

Jun Hyung Lim

Dae Hwan Kim

Je Hun Lee

Byung Du Ahn

Ji Hun Lim

Zheng Zi Li

Hyun Kwang Jung

Yong Suk Hwang

Dong Jun Lee

Kyung Hi Chang

Sang Jun Ko

Jianjun Li

Tae Hyoung Sun

Zhengzi Li

Jung Nam Yun

Sang Bae Ji

A thin film transistor display panel a includes a transparent substrate; a gate electrode positioned on the substrate; a gate insulating layer positioned on the gate electrode; a semiconductor layer positioned on the gate insulating layer and including a channel region; a source electrode and a drain electrode positioned on the semiconductor layer and facing each other; and a passivation layer configured to cover the source electrode, the drain electrode, and the semiconductor layer, wherein the semiconductor layer includes a relatively thick first portion between the source electrode and the gate electrode and a relatively thinner second portion between the drain electrode and the gate electrode overlap, the relatively thick first portion being sufficiently thick to substantially reduce a charge trapping phenomenon that may otherwise occur at a gate electrode to gate dielectric interface if the first portion were as thin as the second portion.

Thin film transistor display panel

Disclosed is a frame transmission method using precoding for supporting MU-MIMO, which facilitates to reduce overhead of a downlink frame in a wireless communication system of FDD method, and a base station supporting that method. The frame transmission method comprises calculating a precoding matrix of a present frame based on channel state information (CSI) of each mobile station and a precoding matrix of a prior frame; precoding a dedicated pilot and downlink data to be transmitted to the mobile station by the use of precoding matrix of the present frame; and transmitting a downlink frame including the precoded dedicated pilot and precoded downlink data to the corresponding mobile station.

Frame transmission method using precoding for supporting MU-MIMO, and base station supporting the frame transmission method

Provided are a decoding apparatus and method for a system supporting an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, the apparatus and method compensating received signals according to a wireless channel estimation result and thereby simply performing decoding by a coherent method. The decoding method includes the steps of: receiving a Quadrature phase shift keying (QPSK) modulated signal; compensating the received signals by applying a result of channel estimation based on pilot signals to the received signals; performing subcarrier demodulation to generate correlation metrics on the basis of the compensated received signals; and performing decoding using a decoding metric derived from the correlation metrics. The decoding apparatus and method compensate a received wireless signal according to a channel estimation result of a wireless channel through which a signal is transmitted, thereby performing decoding by a coherent method having a simple structure.

Decoding apparatus and decoding method

Provided are a decoding apparatus, a decoding method and a receiving apparatus for decoding in a system supporting an OFDM/OFDMA scheme. The decoding method includes the steps of: receiving phase-modulated signal; performing subcarrier demodulation on the received signal and generating correlation metrics; generating decoding metrics using the correlation metrics; and determining a payload using the largest metric of the decoding metrics and at least one of an average metric and the second largest metric of the decoding metrics. The decoding apparatus includes: a receiving buffer for buffering received phase-modulated signal; a likelihood metric generator for generating decoding metrics corresponding to likelihoods of the received signal buffered in the receiving buffer being determined as respective potential payload values; a mean calculator for calculating an average metric; and a payload determiner for determining a payload using the largest metric of the decoding metrics and at least one of an average metric and the second largest metric of the decoding metrics.

Provided is a method for dynamic resource allocation of uplink and downlink in an OFDMA/TDD cellular system. The method for dynamic resource allocation of uplink in an OFDMA/TDD cellular system includes the steps of determining the number of sub-channels which can be allocated to each user through an FLR algorithm; performing channel allocation for a first frame through a round-robin algorithm in which channel information is not needed; performing dynamic channel allocation for a next frame through uplink channel information measured by uplink channel sounding; and performing power control. The method for dynamic resource allocation of downlink in an OFDMA/TDD cellular system includes the steps of selecting a user through a GPF algorithm; performing dynamic channel allocation through an ASA algorithm so as to perform a FASA algorithm for obtaining a multiuser diversity gain; and performing dynamic power allocation through an improved CHC algorithm, in consideration of a data rate provided to each user and a channel state.

Method for dynamic resource allocation of uplink and downlink in OFDMA/TDD cellular system

A memory device, comprising: an interface block for transferring a packet data of selected bits through every data pads at a negative edge and a positive edge of clock signals; a data shift block, in accordance with a load signal from the interface block, for converting the packet data in serial transferred through the interface block and writing the converted data into the core block or converting packet data read from the core block into the serial data and transferring the converted data with a packet type through data pads at a negative edge and a positive edge; and a load signal control means for controlling the load signal to be provided into from the interface block to the data shift block in data read in accordance with a confirming signal for indicating whether the data from the core block is ready to read, or not.

Memory device with packet command

A data output buffer in a semiconductor memory device capable of minimizing generation of ground noise in data being transmitted to an external circuit device via an output line. The data output buffer includes a first input line for inputting true data, a second input line fox inputting complement data, a pull-up transistor connected among a first power supply source, an output line and the first input line, a pull-down transistor connected among a second power supply source, the output line and the second input line, and a resistance-varying transistor for controlling an amount of current being supplied from the second input line to the pull-down transistor, and thereby removing a noise signal to be included in output data of low logic on the output line.

Data output buffer

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Seoul, South Korea

Jae Hyeong Kim