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    • 4. 发明申请
    • DIGITAL IF WIRELESS TRANSMITTER, RF MODULATOR, AND RF MODULATING METHOD
    • 数字无线发射机,RF调制器和RF调制方法
    • US20100046668A1
    • 2010-02-25
    • US12234826
    • 2008-09-22
    • Hae Moon SeoWoo Chul ParkMyung Soo LeeMyung Hyuo Yoon
    • Hae Moon SeoWoo Chul ParkMyung Soo LeeMyung Hyuo Yoon
    • H04L27/36H04L27/00
    • H04L27/364
    • Provided are a digital IF wireless transmitter, an RF modulator, and an RF modulating method. A digital IF wireless transmitter includes an IF up-converting unit up-converting a baseband I signal and a baseband Q signal on the basis of a first IF, a first operating unit subtracting the first IF-up-converted I signal and the first IF-up-converted Q signal, a D/A converting unit analog converting an output signal of the first operating unit, an IF modulating unit separating the same first and second signals from the output signal of the D/A converting unit, and modulating the first and the second signals on the basis of a second IF, a high-pass filtering unit passing a single sideband of the modulated first signal, a miss-matching correcting unit correcting an error of the modulated second signal, a second operating unit subtracting an output signal of the high-pass filtering unit and an output signal of the miss-matching correcting unit, a feedback unit receiving a feedback signal output from the second operating unit, detecting an error of the feedback signal, and providing the detected error to the miss-matching correcting unit, and an RF up-converting unit up-converting the output signal of the second operating unit on the basis of an RF.
    • 提供了数字IF无线发射机,RF调制器和RF调制方法。 数字IF无线发射机包括:IF上变频单元,其基于第一IF上升转换基带I信号和基带Q信号;第一操作单元,减去第一IF上变频I信号和第一IF 上变频Q信号,对第一操作单元的输出信号进行模拟转换的D / A转换单元,将来自D / A转换单元的输出信号的相同第一和第二信号分离的IF调制单元, 基于第二IF的第一和第二信号,通过调制的第一信号的单个边带的高通滤波单元,校正调制的第二信号的误差的缺失匹配校正单元,第二运算单元,减去第 高通滤波单元的输出信号和失配匹配校正单元的输出信号,反馈单元接收从第二操作单元输出的反馈信号,检测反馈信号的误差,并提供 检测到错误匹配校正单元,以及RF上变频单元,基于RF对第二操作单元的输出信号进行上变频。
    • 7. 发明授权
    • Digital IF wireless transmitter, RF modulator, and RF modulating method
    • 数字IF无线发射机,RF调制器和RF调制方法
    • US07983630B2
    • 2011-07-19
    • US12234826
    • 2008-09-22
    • Hae Moon SeoWoo Chul ParkMyung Soo LeeMyung Hyun Yoon
    • Hae Moon SeoWoo Chul ParkMyung Soo LeeMyung Hyun Yoon
    • H04B1/02H04L27/36H04L27/00
    • H04L27/364
    • Provided are a digital IF wireless transmitter, an RF modulator, and an RF modulating method. A digital IF wireless transmitter includes an IF up-converting unit up-converting a baseband I signal and a baseband Q signal on the basis of a first IF, a first operating unit subtracting the first IF-up-converted I signal and the first IF-up-converted Q signal, a D/A converting unit analog converting an output signal of the first operating unit, an IF modulating unit separating the same first and second signals from the output signal of the D/A converting unit, and modulating the first and the second signals on the basis of a second IF, a high-pass filtering unit passing a single sideband of the modulated first signal, a miss-matching correcting unit correcting an error of the modulated second signal, a second operating unit subtracting an output signal of the high-pass filtering unit and an output signal of the miss-matching correcting unit, a feedback unit receiving a feedback signal output from the second operating unit, detecting an error of the feedback signal, and providing the detected error to the miss-matching correcting unit, and an RF up-converting unit up-converting the output signal of the second operating unit on the basis of an RF.
    • 提供了数字IF无线发射机,RF调制器和RF调制方法。 数字IF无线发射机包括:IF上变频单元,其基于第一IF上升转换基带I信号和基带Q信号;第一操作单元,减去第一IF上变频I信号和第一IF 上变频Q信号,对第一操作单元的输出信号进行模拟转换的D / A转换单元,将来自D / A转换单元的输出信号的相同第一和第二信号分离的IF调制单元, 基于第二IF的第一和第二信号,通过调制的第一信号的单个边带的高通滤波单元,校正调制的第二信号的误差的缺失匹配校正单元,第二运算单元,减去第 高通滤波单元的输出信号和失配匹配校正单元的输出信号,反馈单元接收从第二操作单元输出的反馈信号,检测反馈信号的误差,并提供 检测到错误匹配校正单元,以及RF上变频单元,基于RF对第二操作单元的输出信号进行上变频。
    • 8. 发明授权
    • Multi-band ZigBee transceiver supporting IEEE 802.15.4 wireless communication
    • 支持IEEE 802.15.4无线通信的多频ZigBee收发器
    • US07260360B2
    • 2007-08-21
    • US10981789
    • 2004-11-05
    • Hae Moon SeoKwang Ho WonYoung Kuk ParkMyung Hyun YoonJun Jae Yoo
    • Hae Moon SeoKwang Ho WonYoung Kuk ParkMyung Hyun YoonJun Jae Yoo
    • H04B7/00H04M1/00
    • H04M1/72522H04B1/40H04M2250/06
    • Disclosed herein is a multi-band ZigBee transceiver for supporting IEEE 802.15.4 wireless communications. In the multi-band ZigBee transceiver, a Multi-Mode Modem (MMM) selects any one of a European version standard using 860 MHz band, a US version standard using 920 MHz band, and a worldwide version standard using 2.4 GHz ISM band among IEEE 802.15.4 standards. A frequency synthesizing unit variably adjusts a carrier frequency according to the transmission standard. A transmission unit receives a digital modulated signal, low-pass-filters the digital modulated signal with a bandwidth thereof being variably adjusted, and up-converts the filtered digital modulated signal into an RF modulated signal corresponding to the selected transmission channel. A receiving unit down-converts the RF modulated signal into a BB modulated signal using the carrier frequency, low-pass-filters the BB modulated signal with a bandwidth thereof being variably adjusted according to the selected transmission standard, converts the filtered BB modulated signal into a digital modulated signal, and outputs the digital modulated signal to the MMM. A transmission/reception switch unit outputs the RF modulated signal, input from the transmission unit, to an antenna, or outputs the RF modulated signal, received from the antenna, to the receiving unit.
    • 这里公开了一种用于支持IEEE 802.15.4无线通信的多频带ZigBee收发器。 在多频ZigBee收发器中,多模式调制解调器(MMM)选择使用860 MHz频段的欧洲版本标准,使用920 MHz频段的美国版本标准和使用2.4 GHz ISM频段的全球版本标准 802.15.4标准。 频率合成单元根据传输标准可变地调整载波频率。 发送单元接收数字调制信号,对其数字调制信号进行可变调整的带宽的低通滤波,并且将滤波后的数字调制信号上变频为对应于选择的发送信道的RF调制信号。 接收单元使用载波频率将RF调制信号下变频为BB调制信号,对BB调制信号进行低通滤波,其带宽根据选定的传输标准进行可变调整,将经过滤波的BB调制信号转换为 数字调制信号,并将数字调制信号输出到MMM。 发送/接收开关单元将从发送单元输入的RF调制信号输出到天线,或者将从天线接收的RF调制信号输出到接收单元。
    • 9. 发明申请
    • VIRTUAL WORLD-BASED VIRTUAL OBJECT IDENTIFICATION SYSTEM SUPPORTING METHOD AND SYSTEM SUPPORTING THE SAME
    • 基于虚拟世界的虚拟对象识别系统支持方法和系统支持
    • US20130111367A1
    • 2013-05-02
    • US13806605
    • 2011-03-30
    • Woo Chool ParkHae Moon SeoKyong Ro Yoon
    • Woo Chool ParkHae Moon SeoKyong Ro Yoon
    • H04L12/56G06F3/0481
    • H04L45/72G06F3/04815H04N21/23109H04N21/235H04N21/278H04N21/422H04N21/6582H04N21/8146H04N21/8543H04N21/8545
    • A virtual world-based virtual object identification system supporting method and a system supporting the same. The method includes: collecting information from at least one of real world information providing means providing information according to the position and management of a corresponding identification ID by assigning each identification ID to a user terminal providing object information according to an avatar registration and terminal operation, a service server generating and providing various contents, a sensor network collecting and providing sensor information according to a set schedule, and an object; converting the collected information into information containing MPEG-V metadata such as information on an identification number separately identifiable in a virtual world, and object profile, an object ownership, reliability, an ownership origin, and an object right; storing the information including the converted MPEG-V metadata; and establishing at least one virtual world by using the stored information as a virtual object.
    • 一种基于虚拟世界的虚拟对象识别系统的支持方法和支持该系统的系统。 所述方法包括:从至少一个真实世界信息提供装置收集信息,根据所述对应的识别ID的位置和管理,通过根据化身登记和终端操作将每个识别ID分配给提供对象信息的用户终端来提供信息, 生成并提供各种内容的服务服务器,传感器网络根据设定的时间表收集和提供传感器信息以及对象; 将收集的信息转换成包含MPEG-V元数据的信息,诸如在虚拟世界中可分辨识别的识别号码的信息,对象简档,对象所有权,可靠性,所有权起始和对象权; 存储包括转换的MPEG-V元数据的信息; 以及通过使用所存储的信息作为虚拟对象来建立至少一个虚拟世界。