公开(公告)号：KR1020090071005A

公开(公告)日：2009-07-01

申请号：KR1020070139188

申请日：2007-12-27

Applicant: 한국전자통신연구원 ,  보드 오브 트러스티즈 오브 미시건 스테이트 유니버시티

Inventor： 조용주 ,  유정주 ,  홍진우 ,  헤이더라다 ,  쉬리쉬크란데 ,  키란미스라

IPC: H04L12/24 ,  H04L12/26 ,  H04B7/26

CPC classification number: H04L1/0026 ,  H04L1/0009 ,  H04L1/0014 ,  H04L1/203 ,  H04L1/20 ,  H04L47/38

Abstract: A channel capacity estimation and prediction method for rate adaptive wireless video is provided to optimize a video/channel coding rate based on a channel capacity estimation value by a video transmitting device if the video receiving device feeds back channel capacity, thereby increasing adaptability of a coding rate by accurate channel capacity estimation. A channel capacity estimator(121) estimates a BER(Bit Error Rate) of each received video packet by using additional channel state information. The channel capacity estimator estimate channel capacity by the estimated BER and feeds back the estimated channel capacity to the video transmitting device. A decoder(123) channel-decodes a received video stream by using the channel additional channel state information and video-decodes the channel-decoded video stream to recover.

Abstract translation: 提供了一种用于速率自适应无线视频的信道容量估计和预测方法，用于根据视频发送设备的信道容量估计值来优化视频/信道编码率，如果视频接收设备反馈信道容量，从而提高编码的适应性 通过准确的信道容量估计率。 信道容量估计器（121）通过使用附加信道状态信息来估计每个接收到的视频分组的BER（误码率）。 信道容量估计器通过估计的BER估计信道容量，并将估计的信道容量反馈给视频发射设备。 解码器（123）通过使用信道附加信道状态信息对所接收的视频流进行信道解码，并对通道解码的视频流进行视频解码以进行恢复。

公开(公告)号：KR1020090057585A

公开(公告)日：2009-06-08

申请号：KR1020070124224

申请日：2007-12-03

Applicant: 한국전자통신연구원

Inventor： 신일홍 ,  강정원 ,  배성준 ,  유정주 ,  홍진우

IPC: H04N19/90

CPC classification number: H04N19/395 ,  H04N19/33 ,  H04N19/59

Abstract: A distributed video codec device using spatial reduction and enlargement, and a method thereof are provided to prevent degradation of a system with a reduced decoding computation quantity by receiving a time and space-reduced image. An image separator(211) temporally separates an input image. A first encoder transmits parity by encoding a part of the separated input image. A down-sampler(214) spatially reduces the rest of the separated input image. A second encoder encodes and transmits the reduced image.

Abstract translation: 提供一种使用空间缩小和放大的分布式视频编解码器装置及其方法，用于通过接收时间和空间缩小的图像来防止具有降低的解码计算量的系统的劣化。 图像分离器（211）在时间上分离输入图像。 第一编码器通过对分离的输入图像的一部分进行编码来发送奇偶校验。 下采样器（214）在空间上减少分离的输入图像的其余部分。 第二编码器对缩小图像进行编码和发送。

公开(公告)号：KR1020090041141A

公开(公告)日：2009-04-28

申请号：KR1020070106697

申请日：2007-10-23

Applicant: 한국전자통신연구원

Inventor： 신일홍 ,  최해철 ,  이경일 ,  유정주 ,  홍진우

IPC: H04N19/30 ,  G06T3/40

CPC classification number: H04N21/4302 ,  G06T3/40 ,  H04N21/234363 ,  H04N21/23439 ,  H04N21/242 ,  H04N21/2662

Abstract: A method for reducing arbitrary-ratio up-sampling operation using context of macroblock, and a method and an apparatus for encoding/decoding by using the same are provided to reduce the operation quantity of an enlargement calculation by using the information of the peripheral block in a scalable video encoding and decoding. An arbitrary macroblock is selected to successively examine a mode of each macroblock of the lower layer(S510). It is determined at least the selected macroblock or a peripheral macroblock is an intra macroblock(S520). If one of the macroblocks is the intra macrobloc, the selected macroblock is enlarged(S530). It is determined whether a mode investigation is finished for all macroblocks of the lower layer image(S540). If the adaptive enlargement process for all macroblocks is completed, the encoding of the higher layer image is performed.

Abstract translation: 提供一种使用宏块上下文来减少任意比例的上采样操作的方法，以及一种使用该宏块的上下文进行编码/解码的方法和装置，以通过使用周边块的信息来减小放大计算的操作量 一个可扩展的视频编码和解码。 选择任意宏块以连续检查下层的每个宏块的模式（S510）。 确定至少所选择的宏块或外围宏块是帧内宏块（S520）。 如果宏块之一是内部宏块，则放大所选择的宏块（S530）。 确定对于下层图像的所有宏块是否完成了模式调查（S540）。 如果所有宏块的自适应放大处理完成，则执行较高层图像的编码。

公开(公告)号：KR1020090027181A

公开(公告)日：2009-03-16

申请号：KR1020080089997

申请日：2008-09-11

Applicant: 한국전자통신연구원

Inventor： 탕청꽁 ,  강정원 ,  최해철 ,  유정주 ,  홍진우

IPC: H04N19/30 ,  H04N19/147

CPC classification number: H04N19/147 ,  H04N19/30

Abstract: An apparatus for allocating priority order on each frame in SVC and a method thereof are provided to reduce memory required for storing a distortion value and to decrease complexity in case the distortion value is calculated. An apparatus for allocating priority order on each frame in SVC comprises the followings; a single condition setting unit(410) assuming that an SNR enhancement layer exists in other frame of GOP; an estimating unit(420) estimating an identical distortion value; and a compensation unit(430) compensating the distortion value by reflecting a different rate of size.

Abstract translation: 提供一种用于在SVC中的每个帧上分配优先级顺序的装置及其方法，以减少用于存储失真值所需的存储器并且在计算失真值的情况下降低复杂度。 用于在SVC中的每个帧上分配优先顺序的装置包括以下步骤： 假设在GOP的其他帧中存在SNR增强层的单条件设定单元（410） 估计单元（420）估计相同的失真值; 以及补偿单元（430），通过反映不同的尺寸比例来补偿失真值。

公开(公告)号：KR1020090016343A

公开(公告)日：2009-02-13

申请号：KR1020070080901

申请日：2007-08-10

Applicant: 한국전자통신연구원

Inventor： 장인선 ,  백승권 ,  장대영 ,  강경옥 ,  유정주 ,  강홍구 ,  이창헌 ,  이동금

IPC: G10L19/02 ,  H03M7/30 ,  H04N21/233

Abstract: A voice and audio signal encoding/decoding apparatus and a method thereof are provided to efficiently and simultaneously encode/decode voice and audio signals. A signal separation part(110) separates an input signal into signals having different frequency bands. A phase and amplitude information extracting unit(120) extracts momentary phase and momentary amplitude information of each of the separated signal by performing Hilbert conversion of the separated signal. An encoder(130) encodes each of the separated signal by using the extracted momentary phase and momentary amplitude information.

Abstract translation: 提供语音和音频信号编码/解码装置及其方法以有效地并且同时编码/解码语音和音频信号。 信号分离部分（110）将输入信号分离成具有不同频带的信号。 相位和幅度信息提取单元通过执行分离信号的希尔伯特转换来提取每个分离信号的瞬时相位和瞬时振幅信息。 编码器（130）通过使用所提取的瞬时相位和瞬时振幅信息来对每个分离的信号进行编码。

公开(公告)号：KR1020080052332A

公开(公告)日：2008-06-11

申请号：KR1020070098885

申请日：2007-10-01

Applicant: 한국전자통신연구원

Inventor： 이강복 ,  김태연 ,  유정주 ,  윤현호 ,  김병휘

IPC: H04B10/40 ,  H04B10/00

CPC classification number: H04B10/40 ,  H04B10/503 ,  H04B10/572

Abstract: A wavelength initializing method using an external lookup table, and an optical transceiver of a wavelength variable type using the same are provided to perform wavelength initialization of a self-tuning way easily by mounting the lookup table to a controller of an external host and sharing a control function including a lookup function with the host. An optical transceiver(420) converts electrical signals into optical signals of wavelength variable type. A memory unit(430) stores a lookup table including information controlling the wavelength of the optical signals, and transmits the lookup table to an external host after connecting to the external host. The optical transceiver comprises a laser driver(412) which generates bias current, a laser diode(422) which converts electric signals into optical signals, and a wavelength control unit(423) which controls the wavelength of the optical signals after receiving the wavelength control information of the lookup table.

Abstract translation: 提供使用外部查找表的波长初始化方法和使用其的波长可变类型的光收发器，以通过将查找表安装到外部主机的控制器并共享一个自适应方式来轻松地执行自调谐方式的波长初始化 控制功能包括与主机的查找功能。 光收发器（420）将电信号转换为波长可变类型的光信号。 存储单元（430）存储包括控制光信号的波长的信息的查找表，并且在连接到外部主机之后将查找表发送到外部主机。 光收发器包括产生偏置电流的激光驱动器（412），将电信号转换为光信号的激光二极管（422），以及在接收到波长控制之后控制光信号的波长的波长控制单元（423） 查询表的信息。

公开(公告)号：KR1020070061290A

公开(公告)日：2007-06-13

申请号：KR1020060085820

申请日：2006-09-06

Applicant: 한국전자통신연구원

Inventor： 이강복 ,  윤현호 ,  김태연 ,  유정주 ,  김병휘

IPC: H04L29/06 ,  H04B10/25 ,  H04L12/28 ,  H04B10/07

CPC classification number: H04J14/0227 ,  H04J14/0286

Abstract: A PCS(Physical Coding Sublayer) apparatus and the Ethernet layer architecture of a T-PON(Tunable-Wavelength Passive Optical Network System) having a wavelength variable type optical source are provided to support a wavelength initialization and alignment of an ONT(Optical Network Terminal) based on a PLC-ECL(Planar Lightwave Circuit-External Cavity Laser) by independently determining an ONT optical signal. A PCS apparatus of a T-PON having a wavelength variable type optical source includes a wavelength monitoring unit(615), and an automatic recognition unit(614), a transmission unit(611), and a receiving unit(612). The wavelength monitoring unit(615) extracts wavelength information from a digital frame signal transmitted from an ONT, and monitors whether the wavelength information is ONT optical source assignment wavelength information or not. If the wavelength information is not matched with the optical source assignment information of the ONT, the automatic recognition unit(614) adds wavelength control information to the digital frame signal and transmits the added information to the ONT. If the wavelength information is matched with the optical source assignment information of the ONT, the transmission unit(611) encodes and transmits the data transmitted from the ONT to a MAC layer. The receiving unit(612) decodes and receives data of the MAC layer.

Abstract translation: 提供具有波长可变型光源的PCS（物理编码子层）装置和具有波长可变型光源的T-PON（可调波长无源光网络系统）的以太网层架构，以支持ONT（光网络终端）的波长初始化和对准 ）通过独立地确定ONT光信号而基于PLC-ECL（平面光波电路 - 外腔激光器）。 具有波长可变型光源的T-PON的PCS装置包括波长监视单元（615）和自动识别单元（614），发送单元（611）和接收单元（612）。 波长监视单元（615）从ONT发送的数字帧信号中提取波长信息，并监视波长信息是否为ONT光源分配波长信息。 如果波长信息与ONT的光源分配信息不匹配，则自动识别单元（614）将波长控制信息添加到数字帧信号，并将添加的信息发送到ONT。 如果波长信息与ONT的光源分配信息相匹配，则发送单元611将从ONT发送的数据编码并发送到MAC层。 接收单元（612）解码并接收MAC层的数据。

公开(公告)号：KR1020070059921A

公开(公告)日：2007-06-12

申请号：KR1020060085888

申请日：2006-09-06

Applicant: 한국전자통신연구원 ,  한국정보통신대학교 산학협력단

Inventor： 유정주 ,  김병휘 ,  김영민 ,  류미선 ,  김태화 ,  박홍식

IPC: H04B10/03 ,  H04L12/24 ,  H04B10/07 ,  H04B10/40

Abstract: An apparatus and a method for protecting and recovering fixed transceivers using tunable transceivers in a PON(Passive Optical Network) are provided to cut expenses in constructing a PON by protecting N numbers of fixed transceivers in an OLT(Optical Line Terminal), which all ONUs(Optical Network Units) use in common, by using M numbers of tunable transceivers and offer differentiated services according to wavelengths by appointing protection/recovery priorities according to wavelengths and protecting a fixed transceiver having high priority first. An apparatus for protecting fixed transceivers in a PON comprising an OLT having N numbers of fixed transceivers(201) and ONUs(305,306) having a plurality of fixed transceivers comprises a state detection circuit part(303) and M numbers of tunable transceivers(202). The state detection circuit part(303), installed in the OLT, detects the fault state of an optical signal outputted from a fixed transceiver. The tunable transceivers(202), installed in the OLT, output a plurality of respectively different wavelength optical signals. The unable transceivers(202) extract a wavelength optical signal outputted from a fixed transceiver, which has generated a fault detected by the state detection circuit part(303), and recover the fault. The number(M) of tunable transceivers is smaller than the number(N) of fixed transceivers in the OLT.

Abstract translation: 提供了一种使用PON（无源光网络）中的可调谐收发器来保护和恢复固定收发器的装置和方法，用于通过保护OLT（光线路终端）中的N个固定收发器来削减构建PON的开销，所有ONU （光网络单元）通过使用M个可调谐收发器并通过根据波长指定保护/恢复优先级并根据波长提供差异化​​服务，并首先保护具有高优先级的固定收发器。 一种用于保护PON中的固定收发器的装置，包括具有N个固定收发器（201）的OLT和具有多个固定收发器的ONU（305,306），包括状态检测电路部分（303）和M个可调谐收发器（202） 。 安装在OLT中的状态检测电路部分（303）检测从固定收发器输出的光信号的故障状态。 安装在OLT中的可调收发器（202）输出多个分别不同的波长光信号。 无线收发器（202）提取从固定收发器输出的已经产生由状态检测电路部分（303）检测到的故障的波长光信号并恢复故障。 可调谐收发器的数量（M）小于OLT中固定收发器的数量（N）。

公开(公告)号：KR100675838B1

公开(公告)日：2007-01-29

申请号：KR1020040108920

申请日：2004-12-20

Applicant: 한국전자통신연구원

Inventor： 윤현호 ,  김태연 ,  유정주 ,  김병휘

IPC: H04L12/28

CPC classification number: H04L47/34 ,  H04L47/10 ,  H04L47/125

Abstract: 본 발명은 다중 채널로 구성된 링크에서 프레임 전달 순서를 유지하면서 프레임의 전송량을 효율적으로 분배하기 위한 다중 채널 링크에서 프레임의 순서유지 및 전송량 분배장치, 방법 및 이를 이용한 다중 채널 송신기에 관한 것이다.
본 발명은, 수신된 프레임의 정보를 이용하여 프레임의 순서유지 필요성 유무를 결정하고, 순서유지가 필요한 경우 프레임의 길이를 통하여 프레임 전송 완료 시간을 예측하고, 예측된 전송 완료 시간을 바탕으로 순서보호서비스시간(SPST)을 결정하여 순서보호버퍼(SPB)에 저장한 후, SPST 완료시점에 프레임을 유휴 전송기에 분배함으로써 채널사용의 효율을 극대화 할 수 있다.
다중 채널, 링크, 프레임, 전송량, 분배, 순서보호서비스시간(SPST), 순서보호버퍼(SPB), 유휴

Abstract translation: 本发明提供一种用于保持帧序列并在多信道链路中分配业务的装置和方法，该多信道链路有效地分配帧业务，同时保持由多个信道组成的链路中的帧的传输序列，并且向多信道发射机 使用设备和方法。 本发明确定使用关于接收到的帧的信息是否需要帧序列的保留，如果需要顺序保存，则基于帧的长度来预测帧传输服务完成时间，确定序列保存服务时间（SPST ）根据预测的传输服务完成时间将帧存储在用于SPST的序列保存缓冲器中，并且在SPST的终止点将帧分配给空闲发射机，从而最大化信道使用的效率。

公开(公告)号：KR100516152B1

公开(公告)日：2005-09-21

申请号：KR1020030091332

申请日：2003-12-15

Applicant: 한국전자통신연구원

Inventor： 김태연 ,  유정주 ,  김병휘

IPC: H04J14/02

CPC classification number: H04J14/0282 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0298 ,  H04Q11/0067 ,  H04Q2011/0016 ,  H04Q2011/0086

Abstract: The present invention relates to a WDM/SCM-PON and a media access control method for asymmetric packet communication in the same. In the WDM/SCM-PON, each SCM channel is classified and used as a link by adopting an SCM technique of subdividing a wavelength band of up/downstream data links between an OLT and ONTs into frequency bands, and the ONTs are formed so that a certain SCM channel is independently distributed not fixedly assigned. Accordingly, an inventory problem, which can be generated in WDM/SCM, is prevented before happens, asymmetric dynamic band allocation is performed, and asymmetric service of up/downstream transmission is supported. As a result, a band required for next generation service is dynamically provided, optical interference effect is minimized, and Ethernet compatibility is provided so that Ethernet service suitable for providing IP service can be accommodated.