公开(公告)号：US20130343486A1

公开(公告)日：2013-12-26

申请号：US13775611

申请日：2013-02-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin-Kyu Choi ,  Jong-Min Park ,  Dae-Seung Yoo ,  Gwang-Ja Jin ,  Byung-Tae Jang ,  Dong-Sun Lim

IPC: H04L25/06

CPC classification number: H04L25/061 ,  H04B1/0053 ,  H04B2001/305

Abstract: Disclosed herein are a method and apparatus for generating multiband Radio Frequency (RF) signals in maritime wireless communication. The apparatus includes a baseband conversion unit, a phase compensation unit, a Direct Current (DC) offset compensation unit, and an RF transmission unit. The baseband conversion unit converts RF signals corresponding to a baseband modulation signal having a negative frequency and a baseband modulation signal having a positive frequency into baseband signals, respectively. The phase compensation unit eliminates the images of multiband signals so as to correspond to the baseband signals. The DC offset compensation unit compensates the baseband modulation signals for DC offsets using the multiband signals from which the images have been eliminated The RF transmission unit generates the RF signals using the signals which have been compensated for the DC offsets, and sends the RF signals via an antenna.

Abstract translation: 本文公开了一种用于在海上无线通信中生成多频带（RF）信号的方法和装置。 该装置包括基带转换单元，相位补偿单元，直流（DC）偏移补偿单元和RF发送单元。 基带转换单元将具有负频率的基带调制信号和具有正频率的基带调制信号的RF信号分别转换为基带信号。 相位补偿单元消除多频带信号的图像，以对应于基带信号。 DC偏移补偿单元使用已经被去除图像的多频带信号来补偿用于DC偏移的基带调制信号RF传输单元使用已经补偿了DC偏移的信号来产生RF信号，并且经由 天线。

公开(公告)号：US08989305B2

公开(公告)日：2015-03-24

申请号：US13775611

申请日：2013-02-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin-Kyu Choi ,  Jong-Min Park ,  Dae-Seung Yoo ,  Gwang-Ja Jin ,  Byung-Tae Jang ,  Dong-Sun Lim

IPC: H04L25/49 ,  H04B1/04 ,  H04L25/06 ,  H04B1/00 ,  H04B1/30

CPC classification number: H04L25/061 ,  H04B1/0053 ,  H04B2001/305

Abstract: Disclosed herein are a method and apparatus for generating multiband Radio Frequency (RF) signals in maritime wireless communication. The apparatus includes a baseband conversion unit, a phase compensation unit, a Direct Current (DC) offset compensation unit, and an RF transmission unit. The baseband conversion unit converts RF signals corresponding to a baseband modulation signal having a negative frequency and a baseband modulation signal having a positive frequency into baseband signals, respectively. The phase compensation unit eliminates the images of multiband signals so as to correspond to the baseband signals. The DC offset compensation unit compensates the baseband modulation signals for DC offsets using the multiband signals from which the images have been eliminated. The RF transmission unit generates the RF signals using the signals which have been compensated for the DC offsets, and sends the RF signals via an antenna.

Abstract translation: 本文公开了一种用于在海上无线通信中生成多频带（RF）信号的方法和装置。 该装置包括基带转换单元，相位补偿单元，直流（DC）偏移补偿单元和RF发送单元。 基带转换单元将具有负频率的基带调制信号和具有正频率的基带调制信号的RF信号分别转换为基带信号。 相位补偿单元消除多频带信号的图像，以对应于基带信号。 DC偏移补偿单元使用已经消除了图像的多频带信号来补偿用于DC偏移的基带调制信号。 RF发送单元使用已经补偿了DC偏移的信号来生成RF信号，并且经由天线发送RF信号。

公开(公告)号：US10082148B2

公开(公告)日：2018-09-25

申请号：US14796414

申请日：2015-07-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joa-Hyoung Lee ,  Gwang-Ja Jin ,  You-Hee Choi

IPC: F04D27/02

CPC classification number: F04D27/0284 ,  F04D27/0215 ,  F04D27/0261

Abstract: Disclosed herein are a surge prevention apparatus and method for a centrifugal compressor. The surge prevention apparatus includes a control unit for controlling a gas provision operation based on a flow rate and pressure on an inlet side of a compressor and pressure on an outlet side of the compressor, and a gas provision unit for storing a part of gas flowing into the inlet side of the compressor and providing the stored gas to the inlet side in response to a control signal from the control unit.

公开(公告)号：US09277476B2

公开(公告)日：2016-03-01

申请号：US13916660

申请日：2013-06-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dae-Seung Yoo ,  Hyung-Joo Kim ,  Seung-Yong Lee ,  Jin-Kyu Choi ,  Jong-Min Park ,  Gwang-Ja Jin

IPC: H04W40/00 ,  H04W40/02

CPC classification number: H04W40/00 ,  H04W40/02

Abstract: Disclosed herein are a maritime communication apparatus and method. The maritime communication apparatus includes a land-based network communication unit, a maritime network communication unit, and a communication control unit. The land-based network communication unit communicates with a land-based communication network. The maritime network communication unit communicates with a maritime communication network. The communication control unit links the communication of the land-based network communication unit with the communication of the maritime network communication unit in accordance with a destination address of data provided by any one of the land-based network communication unit and the maritime network communication unit.

Abstract translation: 本文公开了一种海事通信装置和方法。 海事通信设备包括陆基网络通信单元，海事网络通信单元和通信控制单元。 陆基网络通信单元与陆基通信网络进行通信。 海事网络通信单元与海上通信网络进行通信。 通信控制单元根据陆基网络通信单元和海上网络通信单元中的任何一个提供的数据的目的地地址将陆地网络通信单元的通信与海事网络通信单元的通信链接 。

公开(公告)号：US20140018066A1

公开(公告)日：2014-01-16

申请号：US13916660

申请日：2013-06-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dae-Seung YOO ,  Hyung-Joo Kim ,  Seung-Yong Lee ,  Jin-Kyu Choi ,  Jong-Min Park ,  Gwang-Ja Jin

IPC: H04W40/00

CPC classification number: H04W40/00 ,  H04W40/02

Abstract: Disclosed herein are a maritime communication apparatus and method. The maritime communication apparatus includes a land-based network communication unit, a maritime network communication unit, and a communication control unit. The land-based network communication unit communicates with a land-based communication network. The maritime network communication unit communicates with a maritime communication network. The communication control unit links the communication of the land-based network communication unit with the communication of the maritime network communication unit in accordance with a destination address of data provided by any one of the land-based network communication unit and the maritime network communication unit.

Abstract translation: 本文公开了一种海事通信装置和方法。 海事通信设备包括陆基网络通信单元，海事网络通信单元和通信控制单元。 陆基网络通信单元与陆基通信网络进行通信。 海事网络通信单元与海上通信网络进行通信。 通信控制单元根据陆基网络通信单元和海上网络通信单元中的任何一个提供的数据的目的地地址将陆地网络通信单元的通信与海事网络通信单元的通信链接 。