公开(公告)号：US08717991B2

公开(公告)日：2014-05-06

申请号：US13209830

申请日：2011-08-15

Applicant: Jong Min Park ,  Sangwoo Lee ,  Min Jung Kim ,  Hyun Kyun Choi ,  Hyun Seo Oh

Inventor： Jong Min Park ,  Sangwoo Lee ,  Min Jung Kim ,  Hyun Kyun Choi ,  Hyun Seo Oh

IPC: H04W4/04

CPC classification number: H04W72/10

Abstract: In a vehicle communication system, a multi channel operation apparatus for communication of a vehicle or a road side base station operates a multi channel in one physical layer and differentially transmits a frame through a corresponding channel according to a user priority order value of a frame to transmit.

Abstract translation: 在车辆通信系统中，用于车辆或道路侧基站的通信的多信道操作装置在一个物理层中操作多个信道，并且根据帧的用户优先级顺序值通过相应的信道差分地发送帧到 发送。

公开(公告)号：US08570930B2

公开(公告)日：2013-10-29

申请号：US12949362

申请日：2010-11-18

Applicant: Min Jung Kim ,  Sangwoo Lee ,  Hyun Kyun Choi ,  Han Byeog Cho ,  Hyun Seo Oh

Inventor： Min Jung Kim ,  Sangwoo Lee ,  Hyun Kyun Choi ,  Han Byeog Cho ,  Hyun Seo Oh

IPC: H04Q7/00

CPC classification number: H04W40/20 ,  H04W40/026 ,  H04W40/24

Abstract: In order for a source node including a vehicle multihop protocol unicast apparatus to route data to a destination node, the source node broadcasts a location request message to neighbor node and receives a location response message from the neighbor nodes in response to the location request message. Therefore, the source node routes unicast data on the basis of the location information of the destination node included in the location response message. At this time, the source node uses a location based forwarder selecting algorithm in order to select a forwarder.

Abstract translation: 为了使包括车辆多跳协议单播装置的源节点将数据路由到目的地节点，源节点向邻居节点广播位置请求消息，并响应于位置请求消息从邻居节点接收位置响应消息。 因此，源节点根据位置响应消息中包含的目的地节点的位置信息来路由单播数据。 此时，源节点使用基于位置的转发器选择算法来选择转发器。

公开(公告)号：US08543155B2

公开(公告)日：2013-09-24

申请号：US13195365

申请日：2011-08-01

Applicant: Sangwoo Lee ,  Hyun Kyun Choi ,  Hyun Seo Oh

Inventor： Sangwoo Lee ,  Hyun Kyun Choi ,  Hyun Seo Oh

IPC: H04B7/00

CPC classification number: H04W36/00 ,  H04W36/18 ,  H04W74/00

Abstract: A first roadside equipment operates as a transmitting/receiving mode in a control channel interval of an Nth synchronization interval so as to support a handover. In this instance, a second roadside equipment neighboring to the first roadside equipment operates as a receiving mode in the control channel interval of the Nth synchronization interval. The first roadside equipment operates as the receiving mode in a control channel interval of an (N+1)th synchronization interval. In this instance, the second roadside equipment operates as the transmitting/receiving mode in the control channel interval of the (N+1)th synchronization interval.

Abstract translation: 第一路边设备在第N个同步间隔的控制信道间隔中作为发送/接收模式工作，以支持切换。 在这种情况下，与第一路边设备相邻的第二路边设备在第N个同步间隔的控制信道间隔中作为接收模式进行操作。 第一路边设备在第（N + 1）同步间隔的控制信道间隔中作为接收模式进行操作。 在这种情况下，第二路边设备作为第（N + 1）同步间隔的控制信道间隔中的发送/接收模式。

公开(公告)号：US08270510B2

公开(公告)日：2012-09-18

申请号：US12643296

申请日：2009-12-21

Applicant: Hyun Seo Oh ,  Hyun Kyun Choi ,  Sangin Kim ,  Daeki Hong ,  Dong Yong Kwak ,  Jong-Hyun Park

Inventor： Hyun Seo Oh ,  Hyun Kyun Choi ,  Sangin Kim ,  Daeki Hong ,  Dong Yong Kwak ,  Jong-Hyun Park

IPC: H04L27/28

CPC classification number: H04L27/2656 ,  H04L25/068 ,  H04L27/2675 ,  H04L27/2695

Abstract: An apparatus for time synchronization of an orthogonal frequency division multiplexing (OFDM) system oversamples a received signal using a master clock having a frequency at least four times higher than a minimum sampling frequency in a transmission apparatus, sets one of a plurality of oversampled signals to an on-time signal, and shifts each of the remaining oversampled signals by a predetermined time on the basis of the on-time signal. The apparatus for time synchronization calculates a correlation value by correlating each of the shifted signals and the on-time signal with a previously known signal, detects a maximum energy value among the calculated correlation values, and detects a start point of a frame by comparing the maximum energy value with a predetermined threshold value.

Abstract translation: 正交频分复用（OFDM）系统的时间同步的装置使用在发送装置中具有比最小采样频率高至少四倍的频率的主时钟对接收信号进行采样，将多个过采样信号中的一个设置为 导通时间信号，并且基于接通时间信号将每个剩余的过采样信号移位预定时间。 用于时间同步的装置通过将每个移位信号和接通时间信号与先前已知的信号相关来计算相关值，检测所计算的相关值中的最大能量值，并通过比较 具有预定阈值的最大能量值。

公开(公告)号：US20100141378A1

公开(公告)日：2010-06-10

申请号：US12619034

申请日：2009-11-16

Applicant: Kyong Hee LEE ,  Hyun Kyun CHOI ,  Jeong-Ho PARK ,  Seung Yong LEE ,  Inhak JOO ,  Gwang Ja JIN ,  Wan Sik CHOI

Inventor： Kyong Hee LEE ,  Hyun Kyun CHOI ,  Jeong-Ho PARK ,  Seung Yong LEE ,  Inhak JOO ,  Gwang Ja JIN ,  Wan Sik CHOI

IPC: G05B23/02

CPC classification number: G06K7/0008

Abstract: A transmitter of an apparatus position in a moving body transmits a first move command signal for moving a radio frequency identification tag to a location within an identification distance to a receiver positioned within a communication distance. A radio frequency identification reader of the moving body transmits an information request signal to the radio frequency identification tag that moves from a first location to a second location corresponding to a location within an identification distance in accordance with a first move command signal and receives a response signal corresponding to the information request signal from the radio frequency identification tag.

Abstract translation: 移动体中的装置位置的发射器发送用于将射频识别标签移动到位于通信距离内的接收机的识别距离内的位置的第一移动命令信号。 移动体的射频识别读取器根据第一移动指令信号，将信息请求信号发送到从第一位置移动到对应于识别距离内的位置的第二位置的射频识别标签，并接收响应 信号对应于来自射频识别标签的信息请求信号。

公开(公告)号：US08660439B2

公开(公告)日：2014-02-25

申请号：US12086225

申请日：2006-12-05

Applicant: Ho-Yong Kang ,  Hyun-Kyun Choi ,  Quan Le ,  Yool Kwon ,  Bong-Tae Kim ,  Sang-Gug Lee

Inventor： Ho-Yong Kang ,  Hyun-Kyun Choi ,  Quan Le ,  Yool Kwon ,  Bong-Tae Kim ,  Sang-Gug Lee

IPC: H04B10/69

CPC classification number: H04B10/6931 ,  H03G3/3084 ,  H04B10/66

Abstract: A transimpedance amplifier for a burst mode optical communication converts a burst current signal into differential output voltage signals. Using a multi-level digital AGC mechanism, the transimpedance amplifier is rapidly adapted to a burst signal whose amplitude varies in a wide range. By using an adaptive level detection method, a multi-level digital AGC can be implemented without using ADC. In addition, because the transimpedance amplifier uses a selective reset generation scheme that performs a reset operation for itself after a high power burst, a burst mode operation can be performed without external reset signals. Accordingly, the transimpedance amplifier can be integrated with an optical detector within a TO-can. Furthermore, the transimpedance amplifier can have the burst mode capability and the best sensitivity.

Abstract translation: 用于突发模式光通信的跨阻放大器将突发电流信号转换成差分输出电压信号。 使用多电平数字AGC机制，跨阻放大器快速适应幅度在宽范围内变化的脉冲串信号。 通过使用自适应电平检测方法，可以在不使用ADC的情况下实现多电平数字AGC。 此外，由于跨阻抗放大器使用在高功率突发之后对其自身执行复位操作的选择性复位产生方案，所以可以在没有外部复位信号的情况下执行突发模式操作。 因此，跨阻放大器可以与TO-can内的光学检测器集成。 此外，跨阻放大器可以具有突发模式能力和最佳灵敏度。

公开(公告)号：US20120287913A1

公开(公告)日：2012-11-15

申请号：US13471421

申请日：2012-05-14

Applicant: Sangwoo LEE ,  Han Byeog Cho ,  Hyun Kyun Choi ,  Hyun Seo Oh ,  Sunghwan Moon ,  Minseok Kim ,  Jong-Moon Chung ,  Dong-Sun Lim

Inventor： Sangwoo LEE ,  Han Byeog Cho ,  Hyun Kyun Choi ,  Hyun Seo Oh ,  Sunghwan Moon ,  Minseok Kim ,  Jong-Moon Chung ,  Dong-Sun Lim

IPC: H04W72/04 ,  H04J3/00

CPC classification number: H04W72/1252 ,  H04W40/20 ,  H04W84/18

Abstract: In a wireless multi-hop network, a transmission scheduling apparatus calculates a transmission demand of every node within the wireless multi-hop network, and allocates a time slot to each node by using the transmission demand of each node.

Abstract translation: 在无线多跳网络中，传输调度装置计算无线多跳网络内的每个节点的传输需求，并且通过使用每个节点的传输需求为每个节点分配时隙。

公开(公告)号：US20120028675A1

公开(公告)日：2012-02-02

申请号：US13195365

申请日：2011-08-01

Applicant: Sangwoo LEE ,  Hyun Kyun Choi ,  Hyun Seo Oh

Inventor： Sangwoo LEE ,  Hyun Kyun Choi ,  Hyun Seo Oh

IPC: H04W36/00

CPC classification number: H04W36/00 ,  H04W36/18 ,  H04W74/00

Abstract: A first roadside equipment operates as a transmitting/receiving mode in a control channel interval of an Nth synchronization interval so as to support a handover. In this instance, a second roadside equipment neighboring to the first roadside equipment operates as a receiving mode in the control channel interval of the Nth synchronization interval. The first roadside equipment operates as the receiving mode in a control channel interval of an (N+1)th synchronization interval. In this instance, the second roadside equipment operates as the transmitting/receiving mode in the control channel interval of the (N+1)th synchronization interval.

Abstract translation: 第一路边设备在第N个同步间隔的控制信道间隔中作为发送/接收模式工作，以支持切换。 在这种情况下，与第一路边设备相邻的第二路边设备在第N个同步间隔的控制信道间隔中作为接收模式进行操作。 第一路边设备在第（N + 1）同步间隔的控制信道间隔中作为接收模式进行操作。 在这种情况下，第二路边设备作为第（N + 1）同步间隔的控制信道间隔中的发送/接收模式。

公开(公告)号：US20110306353A1

公开(公告)日：2011-12-15

申请号：US12984837

申请日：2011-01-05

Applicant: Min Jung Kim ,  Sangwoo Lee ,  Jong Min Park ,  Kyeong-Soo Han ,  Hyun Kyun Choi ,  Hyun Seo Oh

Inventor： Min Jung Kim ,  Sangwoo Lee ,  Jong Min Park ,  Kyeong-Soo Han ,  Hyun Kyun Choi ,  Hyun Seo Oh

IPC: H04W72/06

CPC classification number: H04W48/18 ,  H04W72/06 ,  H04W72/10

Abstract: A device for allocating a channel by using wireless access in a vehicular environment in which an onboard unit is provided in a vehicle and at least one roadside unit is provided, receives a service announcement message from at least one roadside unit, uses the service announcement message to generate an available service table, determines whether the available service table has roadside unit entries for transmitting the service announcement message, and if so, compares average RSSI provided by the roadside units to select a roadside unit to access, selects a channel that corresponds to the service provider ID with the highest priority from among the service provided by the selected roadside unit, and assigns the selected channel as a service channel to exchange information with the roadside unit.

Abstract translation: 一种用于通过在车辆中提供车载单元的车辆环境中使用无线接入和至少一个路侧单元来分配频道的设备，从至少一个路侧单元接收服务通知消息，使用服务通知消息 生成可用服务表，确定可用服务表是否具有用于发送服务通知消息的路侧单元条目，如果是，则比较由路边单元提供的平均RSSI以选择要接入的路侧单元，选择对应于 从所选择的路侧单元提供的服务中具有最高优先级的服务提供商ID，并且将所选择的频道分配为服务信道以与路侧单元交换信息。

公开(公告)号：US20110140778A1

公开(公告)日：2011-06-16

申请号：US12961539

申请日：2010-12-07

Applicant: Woong CHO ,  Hyun Kyun Choi ,  Hyun Seo Oh

Inventor： Woong CHO ,  Hyun Kyun Choi ,  Hyun Seo Oh

IPC: H03G3/20

CPC classification number: H03G3/3078

Abstract: An automatic gain control method of a receiving apparatus is provided. The automatic gain control method includes low-noise amplifying a signal using a first gain value, amplifying the low-noise amplified signal to a second gain value, determining the first gain value using a strength of the low-noise amplified signal, and determining the second gain value using the signal amplified to the second gain value. Accordingly, the reliability of the automatic gain control may be guaranteed.

Abstract translation: 提供了一种接收装置的自动增益控制方法。 自动增益控制方法包括使用第一增益值对信号进行低噪声放大，将低噪声放大信号放大到第二增益值，使用低噪声放大信号的强度来确定第一增益值，并且确定 使用被放大到第二增益值的信号的第二增益值。 因此，可以保证自动增益控制的可靠性。