公开(公告)号：US08798096B2

公开(公告)日：2014-08-05

申请号：US12970700

申请日：2010-12-16

申请人： Ki Hyuk Park ,  Bon Tae Koo

发明人： Ki Hyuk Park ,  Bon Tae Koo

IPC分类号： H04J3/24

CPC分类号： H04L25/0226 ,  H04L7/041

摘要： Disclosed are a method for configuring a preamble for a communication system in order to effectively use a packet transmission bandwidth, a preambler, and an apparatus for generating a packet using the same. The preambler includes: a mode determining unit receiving frame characteristics information, extracting frame information to be transmitted through a preamble, and determining a transmission mode corresponding with the extracted information; and a code generation unit receiving the transmission mode information which has been determined by the mode determining unit and generating a preamble made up of a combination of sub-preamble code strings corresponding with the transmission mode.

摘要翻译： 公开了一种用于配置通信系统的前导码以便有效地使用分组传输带宽的方法，前导码和用于使用该前导码生成分组的装置。 前导码包括：模式确定单元，接收帧特性信息，提取要通过前导码发送的帧信息，以及确定与所提取的信息相对应的传输模式; 以及代码生成单元，接收由所述模式确定单元确定的所述传输模式信息，并且生成由与所述传输模式对应的子前同步码组合的组合构成的前导码。

公开(公告)号：US08311081B2

公开(公告)日：2012-11-13

申请号：US12629014

申请日：2009-12-01

申请人： Ki Hyuk Park ,  Bon Tae Koo ,  Nak Woong Eum

发明人： Ki Hyuk Park ,  Bon Tae Koo ,  Nak Woong Eum

IPC分类号： H04B1/707

CPC分类号： H04B1/7075 ,  H04J3/0608

摘要： Disclosed are a frame synchronization method and a receiver for a communication modem using the same. The frame synchronization method includes performing a correlation operation between a reception data stream and a preamble to output a synchronous signal; and computing correlation values between spreading codes and a reception data stream synchronized with the synchronous signal, wherein a maximum value of the computed correlation values is compared with a preset threshold value, and the outputting of the synchronous signal is performed again when the maximum value is smaller than the preset threshold value.

摘要翻译： 公开了一种帧同步方法和使用该帧同步方法的通信调制解调器的接收机。 帧同步方法包括执行接收数据流与前同步码之间的相关运算以输出同步信号; 以及计算扩展码与与所述同步信号同步的接收数据流之间的相关值，其中将所计算的相关值的最大值与预设阈值进行比较，并且当所述最大值为 小于预设阈值。

公开(公告)号：US20100135362A1

公开(公告)日：2010-06-03

申请号：US12629014

申请日：2009-12-01

申请人： Ki Hyuk Park ,  Bon Tae Koo ,  Nak Woong Eum

发明人： Ki Hyuk Park ,  Bon Tae Koo ,  Nak Woong Eum

IPC分类号： H04B1/707

CPC分类号： H04B1/7075 ,  H04J3/0608

摘要： Disclosed are a frame synchronization method and a receiver for a communication modem using the same. The frame synchronization method includes performing a correlation operation between a reception data stream and a preamble to output a synchronous signal; and computing correlation values between spreading codes and a reception data stream synchronized with the synchronous signal, wherein a maximum value of the computed correlation values is compared with a preset threshold value, and the outputting of the synchronous signal is performed again when the maximum value is smaller than the preset threshold value.

摘要翻译： 公开了一种帧同步方法和使用该帧同步方法的通信调制解调器的接收机。 帧同步方法包括执行接收数据流与前同步码之间的相关运算以输出同步信号; 以及计算扩展码与与所述同步信号同步的接收数据流之间的相关值，其中将所计算的相关值的最大值与预设阈值进行比较，并且当所述最大值为 小于预设阈值。

公开(公告)号：US08345735B2

公开(公告)日：2013-01-01

申请号：US12918030

申请日：2008-10-24

申请人： Tae Wook Kang ,  In Gi Lim ,  Hyung Il Park ,  Sung Weon Kang ,  Kyung Soo Kim ,  Sung Eun Kim ,  Jung Bum Kim ,  Jin Kyung Kim ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Ki Hyuk Park ,  Jae Hoon Shim ,  Hey Jin Myoung

发明人： Tae Wook Kang ,  In Gi Lim ,  Hyung Il Park ,  Sung Weon Kang ,  Kyung Soo Kim ,  Sung Eun Kim ,  Jung Bum Kim ,  Jin Kyung Kim ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Ki Hyuk Park ,  Jae Hoon Shim ,  Hey Jin Myoung

IPC分类号： H04B3/46

CPC分类号： H04B13/005 ,  H04B1/69

摘要： There is provided a communication method using a human body as a medium. A modulation apparatus using a frequency selective baseband according to an aspect of the invention may include: a serial-to-parallel conversion unit converting serial data supplied from an upper layer into parallel data consisting of M+1 number of data input bits; and a frequency selective spreader selecting one subgroup among a plurality of subgroups obtained by dividing 2N number (where N is a positive integer) of spreading codes used for frequency spreading by 2M (where M is a positive integer, and M

摘要翻译： 提供了使用人体作为介质的通信方法。 使用根据本发明的一个方面的频率选择性基带的调制装置可以包括：串行到并行转换单元，将从上层提供的串行数据转换成由M + 1个数据输入位组成的并行数据; 以及频率选择扩展器，通过将用于频率扩展的扩展码的2N个数（其中N是正整数）除以2M（其中M是正整数，并且满足M

公开(公告)号：US20100290511A1

公开(公告)日：2010-11-18

申请号：US12633980

申请日：2009-12-09

申请人： Tae Wook Kang ,  In Gi Lim ,  Sung Weon Kang ,  Tae Young Kang ,  Kyung Soo Kim ,  Sung Eun Kim ,  Jung Bum Kim ,  Jin Kyung Kim ,  Kyung Hwan Park ,  Hyung II Park ,  Byoung Gun Choi ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Hey Jin Myoung ,  Seok Bong Hyun ,  Ki Hyuk Park ,  Jae Hoon Shim

发明人： Tae Wook Kang ,  In Gi Lim ,  Sung Weon Kang ,  Tae Young Kang ,  Kyung Soo Kim ,  Sung Eun Kim ,  Jung Bum Kim ,  Jin Kyung Kim ,  Kyung Hwan Park ,  Hyung II Park ,  Byoung Gun Choi ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Hey Jin Myoung ,  Seok Bong Hyun ,  Ki Hyuk Park ,  Jae Hoon Shim

IPC分类号： H04B7/02 ,  H04L27/28 ,  H04B17/00

CPC分类号： H04B1/707 ,  H04B2201/70715

摘要： An adaptive frequency selective baseband communications method using orthogonal codes includes: a communications testing step of performing communications by using one of a plurality of codes each having a different frequency band; a proper code selecting step of selecting a proper code by using a correlation value of a plurality of codes included in test data transmitted in the communications testing step; a communications performing step of performing communications by using the proper code; and a feedback step of newly selecting a proper code by using the correlation value of the plurality of codes included in the test data transmitted in the communications performing step if a pre-set time duration has lapsed or if a reception error of more than a pre-set reference occurs, and performing the communications performing step again, wherein the test data transmitted in the communications testing step and the communications performing step includes a plurality of codes each having a different frequency band.

摘要翻译： 使用正交码的自适应频率选择性基带通信方法包括：通信测试步骤，通过使用每个具有不同频带的多个码中的一个来执行通信; 适当的代码选择步骤，通过使用在通信测试步骤中发送的测试数据中包括的多个代码的相关值来选择适当的代码; 通过使用适当的代码执行通信的通信执行步骤; 以及反馈步骤，通过使用包括在通信执行步骤中发送的测试数据中的多个代码的相关值来重新选择适当的代码，如果预设的持续时间已经过去或者如果超过预先设定的持续时间的接收错误 - 进行参考，并且再次执行通信执行步骤，其中在通信测试步骤和通信执行步骤中发送的测试数据包括每个具有不同频带的多个代码。

公开(公告)号：US20100171562A1

公开(公告)日：2010-07-08

申请号：US12601584

申请日：2008-04-11

申请人： In Gi Lim ,  Hyung II Park ,  Sung Weon Kang ,  Tae Wook Kang ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Kyung Soo Kim ,  Jung Bum Kim ,  Duck Gun Park ,  Jin Kyung Kim ,  Sung Eun Kim ,  Ki Hyuk Park ,  Jae Hoon Shim

发明人： In Gi Lim ,  Hyung II Park ,  Sung Weon Kang ,  Tae Wook Kang ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Kyung Soo Kim ,  Jung Bum Kim ,  Duck Gun Park ,  Jin Kyung Kim ,  Sung Eun Kim ,  Ki Hyuk Park ,  Jae Hoon Shim

IPC分类号： H03C3/02 ,  H03D3/00

CPC分类号： H04J13/0003 ,  H04B13/005 ,  H04J13/12 ,  H04L5/0016 ,  H04L25/03828 ,  H04L25/03866 ,  H04L25/4908

摘要： Provided are modulation and demodulation methods and apparatuses using a frequency selective baseband. The frequency modulation method includes: generating a plurality of subgroups by dividing 2N (N is a real number) spread codes used for frequency spreading into 2M (M

摘要翻译： 提供了使用频率选择性基带的调制和解调方法和装置。 频率调制方法包括：通过将用于频率扩展的2N（N是实数）扩频码划分成2M（M

公开(公告)号：US09867322B2

公开(公告)日：2018-01-16

申请号：US15262865

申请日：2016-09-12

申请人： Ki Hyuk Park

发明人： Ki Hyuk Park ,  Jae Hyun Park

IPC分类号： A01B61/04 ,  A01B3/24

CPC分类号： A01B61/044 ,  A01B3/24 ,  A01B61/046

摘要： Provided is a safety apparatus for a cultivator. A driving cylinder includes a body wherein a rod having a pressurizing plate at a front end of the rod is inserted into the body; a first inlet hole and a second outlet hole which are formed at one side of the body; a first inlet hole and a second outlet hole formed at a rear portion of the pressurizing plate when the rod extends from the body; a first outlet hole and a second inlet hole formed at the other side of the body; a relief valve at the first outlet hole; a first hydraulic line to connect the relief valve and the first inlet hole; a second hydraulic line to connect the second outlet hole and the second inlet hole; and a check valve at any of the second outlet hole, the second inlet hole and the second hydraulic line.

公开(公告)号：US07961061B2

公开(公告)日：2011-06-14

申请号：US12601584

申请日：2008-04-11

申请人： In Gi Lim ,  Hyung II Park ,  Sung Weon Kang ,  Tae Wook Kang ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Kyung Soo Kim ,  Jung Bum Kim ,  Duck Gun Park ,  Jin Kyung Kim ,  Sung Eun Kim ,  Ki Hyuk Park ,  Jae Hoon Shim

发明人： In Gi Lim ,  Hyung II Park ,  Sung Weon Kang ,  Tae Wook Kang ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Kyung Soo Kim ,  Jung Bum Kim ,  Duck Gun Park ,  Jin Kyung Kim ,  Sung Eun Kim ,  Ki Hyuk Park ,  Jae Hoon Shim

IPC分类号： H03C3/00 ,  H03D3/00 ,  H04B1/00

CPC分类号： H04J13/0003 ,  H04B13/005 ,  H04J13/12 ,  H04L5/0016 ,  H04L25/03828 ,  H04L25/03866 ,  H04L25/4908

摘要： Provided are modulation and demodulation methods and apparatuses using a frequency selective baseband. The frequency modulation method includes: generating a plurality of subgroups by dividing 2N (N is a real number) spread codes used for frequency spreading into 2M (M

摘要翻译： 提供了使用频率选择性基带的调制和解调方法和装置。 频率调制方法包括：通过将用于频率扩展的2N（N是实数）扩频码划分成2M（M

公开(公告)号：US20100322290A1

公开(公告)日：2010-12-23

申请号：US12918030

申请日：2008-10-24

申请人： Tae Wook Kang ,  In Gi Lim ,  Hyung Il Park ,  Sung Weon Kang ,  Kyung Soo Kim ,  Sung Eun Kim ,  Jung Bum Kim ,  Jin Kyung Kim ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Ki Hyuk Park ,  Jae Hoon Shim ,  Hey Jin Myoung

发明人： Tae Wook Kang ,  In Gi Lim ,  Hyung Il Park ,  Sung Weon Kang ,  Kyung Soo Kim ,  Sung Eun Kim ,  Jung Bum Kim ,  Jin Kyung Kim ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Ki Hyuk Park ,  Jae Hoon Shim ,  Hey Jin Myoung

IPC分类号： H04B1/707

CPC分类号： H04B13/005 ,  H04B1/69

摘要： There is provided a communication method using a human body as a medium. A modulation apparatus using a frequency selective baseband according to an aspect of the invention may include: a serial-to-parallel conversion unit converting serial data supplied from an upper layer into parallel data consisting of M+1 number of data input bits; and a frequency selective spreader selecting one subgroup among a plurality of subgroups obtained by dividing 2N number (where N is a positive integer) of spreading codes used for frequency spreading by 2M (where M is a positive integer, and M

摘要翻译： 提供了使用人体作为介质的通信方法。 使用根据本发明的一个方面的频率选择性基带的调制装置可以包括：串行到并行转换单元，将从上层提供的串行数据转换成由M + 1个数据输入位组成的并行数据; 以及频率选择扩展器，通过将用于频率扩展的扩展码的2N个数（其中N是正整数）除以2M（其中M是正整数，并且满足M

公开(公告)号：US08311175B2

公开(公告)日：2012-11-13

申请号：US12677158

申请日：2008-04-11

申请人： Jin Kyung Kim ,  Sung Weon Kang ,  Tae Wook Kang ,  Kyung Soo Kim ,  Sung Eun Kim ,  Jung Bum Kim ,  Duck Gun Park ,  Hyung Il Park ,  In Gi Lim ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Ki Hyuk Park ,  Jae Hoon Shim

发明人： Jin Kyung Kim ,  Sung Weon Kang ,  Tae Wook Kang ,  Kyung Soo Kim ,  Sung Eun Kim ,  Jung Bum Kim ,  Duck Gun Park ,  Hyung Il Park ,  In Gi Lim ,  Chang Hee Hyoung ,  Jung Hwan Hwang ,  Ki Hyuk Park ,  Jae Hoon Shim

IPC分类号： H04L7/02

CPC分类号： H04B13/005

摘要： A Time Division Duplex (TDD) communication apparatus and an operation method thereof can provide operation clock signals in the transmission and reception of the TDD communication apparatus using a Clock Recovery & Data Retiming (CDR) circuit, thereby stabilizing an operation without any crystal oscillator and reducing the power consumption. In a transmission time interval, a transmitting frame is processed using a clock signal of a reference frequency generated from the CDR circuit. In a reception time interval, a receiving frame is processed using a clock signal recovered from the receiving frame by the CDR circuit.

摘要翻译： 时分双工（TDD）通信设备及其操作方法可以使用时钟恢复和数据重定时（CDR）电路在TDD通信设备的发送和接收中提供操作时钟信号，从而稳定没有任何晶体振荡器的操作， 降低功耗。 在传输时间间隔中，使用从CDR电路产生的参考频率的时钟信号来处理发送帧。 在接收时间间隔中，使用由CDR电路从接收帧恢复的时钟信号来处理接收帧。