公开(公告)号：US20090022139A1

公开(公告)日：2009-01-22

申请号：US12176129

申请日：2008-07-18

申请人： U Sang Lee ,  Koon Shik Cho

发明人： U Sang Lee ,  Koon Shik Cho

IPC分类号： H04J3/06

CPC分类号： H04L7/042 ,  H04B2001/6912 ,  H04W84/10 ,  H04W84/18 ,  H04W88/04

摘要： There are provided a wireless personal area networks (WPAN) Zigbee receiver and a receiving method thereof that can obtain a spreading gain by a reduction in data rate. A wireless personal area network Zigbee receiver receiving a signal packet including a plurality of functional units having a plurality of symbols, the plurality of functional units each repeated as many as a predetermined extension number according to an aspect of the invention includes: a preamble detection unit detecting a, and generating a preamble synchronization; and an SFD synchronization unit comparing, each symbol of SFD units included in the signal packet with a predetermined SFD reference symbol continuously and repeatedly as many as the extension number, and generating an SFD synchronization signal when each of the symbols of the SFD units is equal to the SFD reference symbol as many as the extension number.

摘要翻译： 提供了可以通过降低数据速率获得扩展增益的无线个人区域网络（WPAN）ZigBee接收机及其接收方法。 根据本发明的一个方面，一种无线个人区域网络ZigBee接收机接收包括具有多个符号的多个功能单元的信号分组，所述多个功能单元每个重复多达预定分机号码，包括：前导码检测单元 检测a并产生前同步码同步; 以及SFD同步单元，将包含在信号分组中的SFD单元的每个符号与预定的SFD参考符号连续且重复地与分机号码一样进行比较，并且当SFD单元的每个符号相等时产生SFD同步信号 到SFD参考符号与分机号码一样多。

公开(公告)号：US20080101516A1

公开(公告)日：2008-05-01

申请号：US11925121

申请日：2007-10-26

申请人： Koon Shik Cho ,  Seung Han Ko ,  Jae Hyung Lee ,  Kwang Mook Lee ,  Sang Hyun Min ,  Sang Ho Lee ,  U Sang Lee

发明人： Koon Shik Cho ,  Seung Han Ko ,  Jae Hyung Lee ,  Kwang Mook Lee ,  Sang Hyun Min ,  Sang Ho Lee ,  U Sang Lee

IPC分类号： H04L7/02

CPC分类号： H04L7/08

摘要： Provided is a synchronization device for wireless communication packets, the synchronization device including an A/D (analog/digital) converter that converts an analog input signal applied from outside into a digital signal; a correlation calculating section that is connected to the A/D converter and correlates the converted input signal with a preset reference code so as to calculate a correlation value; a threshold setting section that is connected to the correlation calculating section and sets a threshold value of the correlation value; a maximum correlation detecting section that is connected to the correlation calculating section and the threshold setting section, compares the correlation value with the threshold value, detects the position of the maximum correlation value within each symbol of the input signal when the correlation value is larger than the threshold value, and judges whether a difference in position between the maximum correlation values of consecutive symbols is equal to the period of one symbol or not; a preamble detecting section that is connected to the correlation calculating section and the maximum correlation detecting section and outputs a preamble detection signal when the difference is equal to the period of one symbol; and a data detecting section that receives data of the input signal when the preamble detection signal is applied.

摘要翻译： 提供了一种用于无线通信分组的同步装置，该同步装置包括将从外部施加的模拟输入信号转换为数字信号的A / D（模拟/数字）转换器; 相关计算部分，连接到A / D转换器，并将转换的输入信号与预置的参考码相关联，以便计算相关值; 阈值设定部，与相关计算部连接并设定相关值的阈值; 连接到相关计算部分和阈值设定部分的最大相关检测部分将相关值与阈值进行比较，当相关值大于该值时，检测输入信号的每个符号内的最大相关值的位置 阈值，并且判断连续符号的最大相关值之间的位置差是否等于一个符号的周期; 前同步码检测部，其连接到所述相关计算部和所述最大相关检测部，并且当所述差等于一个符号的周期时，输出前同步码检测信号; 以及数据检测部分，当应用前导码检测信号时，接收输入信号的数据。

公开(公告)号：US08094596B2

公开(公告)日：2012-01-10

申请号：US12176129

申请日：2008-07-18

申请人： U Sang Lee ,  Koon Shik Cho

发明人： U Sang Lee ,  Koon Shik Cho

IPC分类号： H04B7/00

CPC分类号： H04L7/042 ,  H04B2001/6912 ,  H04W84/10 ,  H04W84/18 ,  H04W88/04

摘要： There are provided a wireless personal area networks (WPAN) Zigbee receiver and a receiving method thereof that can obtain a spreading gain by a reduction in data rate. A wireless personal area network Zigbee receiver receiving a signal packet including a plurality of functional units having a plurality of symbols, the plurality of functional units each repeated as many as a predetermined extension number according to an aspect of the invention includes: a preamble detection unit detecting a, and generating a preamble synchronization; and an SFD synchronization unit comparing, each symbol of SFD units included in the signal packet with a predetermined SFD reference symbol continuously and repeatedly as many as the extension number, and generating an SFD synchronization signal when each of the symbols of the SFD units is equal to the SFD reference symbol as many as the extension number.

摘要翻译： 提供了可以通过降低数据速率获得扩展增益的无线个人区域网络（WPAN）ZigBee接收机及其接收方法。 根据本发明的一个方面，一种无线个人区域网络ZigBee接收机接收包括具有多个符号的多个功能单元的信号分组，所述多个功能单元每个重复多达预定分机号码，包括：前导码检测单元 检测a并产生前同步码同步; 以及SFD同步单元，将包含在信号分组中的SFD单元的每个符号与预定的SFD参考符号连续且重复地与分机号码一样进行比较，并且当SFD单元的每个符号相等时产生SFD同步信号 到SFD参考符号与分机号码一样多。

公开(公告)号：US07643579B2

公开(公告)日：2010-01-05

申请号：US11457116

申请日：2006-07-12

申请人： Sang Hyun Min ,  Tah Joon Park ,  U Sang Lee ,  Koon Shik Cho ,  Kwang Mook Lee

发明人： Sang Hyun Min ,  Tah Joon Park ,  U Sang Lee ,  Koon Shik Cho ,  Kwang Mook Lee

IPC分类号： H04L27/22 ,  H03D3/22 ,  H04L27/06

CPC分类号： H04B14/06 ,  H04W84/10

摘要： The present invention relates to a multiple differential demodulator using a weighting value. The multiple differential demodulator according to the present invention includes a weighting value generator for integrating a real part and an imaginary part of a value acquired by multiplying one of a plurality of differentiated reception signals by a conjugated value of a differentiated PN code signal corresponding to a preset symbol, and determining the greater of the integrated real and integrated imaginary parts to apply a predetermined weighting value to the greater value, where the PN code signal is differentiated in the same fashion as the differentiated reception signals.

摘要翻译： 本发明涉及使用加权值的多重差分解调器。 根据本发明的多重差分解调器包括一个加权值产生器，用于将通过将多个差分接收信号中的一个相乘而得到的值的实部和虚部进行积分，该复数值与对应于 并且确定积分的实数和积分虚部中的较大者，以将预定加权值应用于较大值，其中PN码信号以与差分接收信号相同的方式进行微分。

公开(公告)号：US07558346B2

公开(公告)日：2009-07-07

申请号：US11427771

申请日：2006-06-29

申请人： Sang Hyun Min ,  Hyung Jin Choi ,  Jung Su Han ,  Joo Hyun Do ,  Tah Joon Park ,  Kwang Mook Lee ,  Koon Shik Cho ,  U Sang Lee

发明人： Sang Hyun Min ,  Hyung Jin Choi ,  Jung Su Han ,  Joo Hyun Do ,  Tah Joon Park ,  Kwang Mook Lee ,  Koon Shik Cho ,  U Sang Lee

IPC分类号： H04B1/00 ,  H04L27/06

CPC分类号： H04L27/2657 ,  H04B1/708 ,  H04B1/709 ,  H04L27/261 ,  H04L27/2675

摘要： The invention relates to a symbol detector for detecting symbols received in a receive modem of short-range wireless personal area network of a ZigBee system (IEEE 802.15.4). An OQPSK short-range wireless communication system according to the invention acquires frequency offset in a received signal using a symbol contained in a preamble of a packet of the signal, multi-delay-differentiates the signal by a plurality of predetermined delay times, and complex-conjugates the acquired frequency offset to eliminate the frequency offset. Then, the OQPSK short-range wireless communication system according to the invention correlates the received signal with a PN sequence delay-differentiated through the same process to detect the symbols corresponding to the received signal.

摘要翻译： 本发明涉及一种用于检测在ZigBee系统（IEEE 802.15.4）的短距离无线个域网的接收调制解调器中接收的符号的符号检测器。 根据本发明的OQPSK短距离无线通信系统使用包含在信号分组的前导码中的符号来获取接收信号中的频率偏移，将信号多延迟多个预定延迟时间，并且复数 收集频率偏移以消除频率偏移。 然后，根据本发明的OQPSK短距离无线通信系统将接收到的信号与通过相同处理延迟差分的PN序列相关，以检测对应于接收信号的符号。

公开(公告)号：US20100077113A1

公开(公告)日：2010-03-25

申请号：US12262516

申请日：2008-10-31

申请人： Soon Jin CHOI ,  Seung Han Ko ,  Bo II Seo ,  Koon Shik Cho

发明人： Soon Jin CHOI ,  Seung Han Ko ,  Bo II Seo ,  Koon Shik Cho

IPC分类号： G06F3/00

CPC分类号： G06F5/12 ,  G06F2205/126

摘要： Provided is a data communication system including a first-in first-out (FIFO) buffer having a fixed size; a central processing unit (CPU) that writes data stored in a memory into the FIFO buffer; a modem that reads the data written by the CPU from the FIFO buffer; and a modem controller that is connected to the FIFO buffer, the CPU, and the modem, respectively, and controls the CPU such that data having a larger volume than the size of the FIFO buffer can be processed.

摘要翻译： 提供了一种包括具有固定大小的先进先出（FIFO）缓冲器的数据通信系统; 将存储在存储器中的数据写入FIFO缓冲器的中央处理单元（CPU） 调制解调器，从FIFO缓冲器读取CPU写入的数据; 以及分别连接到FIFO缓冲器，CPU和调制解调器的调制解调器控制器，并且控制CPU，使得可以处理具有比FIFO缓冲器的大小更大的数据的数据。

公开(公告)号：US20080100391A1

公开(公告)日：2008-05-01

申请号：US11928720

申请日：2007-10-30

申请人： Joon Hyung LIM ,  Tah Joon Park ,  Kwang Mook Lee ,  Koon Shik Cho

发明人： Joon Hyung LIM ,  Tah Joon Park ,  Kwang Mook Lee ,  Koon Shik Cho

IPC分类号： H03K3/02

CPC分类号： H03K3/011 ,  H03L7/06

摘要： There is provided an RC oscillation circuit capable of adjusting an oscillation frequency, and an oscillation method thereof. The RC oscillation circuit including: an RC oscillator including a variable resistor and a variable capacitor, the RC oscillator generating an RC oscillating signal having a frequency determined by a resistance of the variable resistor and a capacitance of the variable capacitor; a counter counting a clock number of a reference oscillating signal corresponding to one period of the RC oscillating signal to generate a first count value, the reference oscillating signal having a preset frequency; and a frequency controller controlling a frequency of the RC oscillating signal by determining the resistance of the variable resistor and the capacitance of the variable capacitor such that a difference between the first count value and a preset second count value is smaller than a preset first critical value.

摘要翻译： 提供了能够调节振荡频率的RC振荡电路及其振荡方法。 RC振荡电路包括：包括可变电阻器和可变电容器的RC振荡器，RC振荡器产生具有由可变电阻器的电阻和可变电容器的电容确定的频率的RC振荡信号; 计数对应于RC振荡信号的一个周期的参考振荡信号的时钟数，以产生第一计数值，所述参考振荡信号具有预置频率; 以及频率控制器，通过确定可变电阻器的电阻和可变电容器的电容来控制RC振荡信号的频率，使得第一计数值和预设的第二计数值之间的差小于预设的第一临界值 。

公开(公告)号：US20070121765A1

公开(公告)日：2007-05-31

申请号：US11549025

申请日：2006-10-12

申请人： Sang Hyun Min ,  Hyung Jin Choi ,  Joo Hyun Do ,  Shin Woo Kang ,  Tah Joon PARK ,  Koon Shik Cho

发明人： Sang Hyun Min ,  Hyung Jin Choi ,  Joo Hyun Do ,  Shin Woo Kang ,  Tah Joon PARK ,  Koon Shik Cho

IPC分类号： H04L27/06 ,  H04L27/22

CPC分类号： H04L7/041 ,  H04L27/2278 ,  H04L27/2331

摘要： A timing estimator of an OQPSK demodulator is provided. In the timing estimator, an A/D converter converts an analog reception signal into a digital reception signal. A differential circuit section delays the digital reception signal from the A/D converter by a preset time and obtains a phase difference between a conjugate complex number signal of the delayed digital reception signal and the digital reception signal to offset a frequency error contained in the digital reception signal. A correlation operation section performs a correlation operation between a reference symbol differentiated in the same way as a differentiation of the differential circuit section and the reception signal to obtain each correlation value. A coherent detector detects a coherent point on the basis of the correlation value from the correlation operation section.

摘要翻译： 提供OQPSK解调器的定时估计器。 在定时估计器中，A / D转换器将模拟接收信号转换为数字接收信号。 差分电路部分将来自A / D转换器的数字接收信号延迟预设时间，并且获得延迟的数字接收信号的共轭复数信号与数字接收信号之间的相位差，以抵消包含在数字 接收信号。 相关运算部分以与差分电路部分的微分和接收信号相同的方式执行区分的参考符号之间的相关运算，以获得每个相关值。 相干检测器根据相关运算部分的相关值检测相干点。

公开(公告)号：US07612624B2

公开(公告)日：2009-11-03

申请号：US11928720

申请日：2007-10-30

申请人： Joon Hyung Lim ,  Tah Joon Park ,  Kwang Mook Lee ,  Koon Shik Cho

发明人： Joon Hyung Lim ,  Tah Joon Park ,  Kwang Mook Lee ,  Koon Shik Cho

IPC分类号： H03K3/02

CPC分类号： H03K3/011 ,  H03L7/06

摘要： An RC oscillation circuit and method capable of adjusting an oscillation frequency includes: an RC oscillator including a variable resistor and a variable capacitor, the RC oscillator generating an RC oscillating signal having a frequency determined by a resistance of the variable resistor and a capacitance of the variable capacitor; a counter counting a clock number of a reference oscillating signal corresponding to one period of the RC oscillating signal to generate a first count value, the reference oscillating signal having a preset frequency; and a frequency controller controlling a frequency of the RC oscillating signal by determining the resistance of the variable resistor and the capacitance of the variable capacitor such that a difference between the first count value and a preset second count value is smaller than a preset first critical value.

摘要翻译： 一种能够调节振荡频率的RC振荡电路和方法包括：RC振荡器，包括可变电阻器和可变电容器，RC振荡器产生具有由可变电阻器的电阻确定的频率的RC振荡信号和 可变电容器 计数对应于RC振荡信号的一个周期的参考振荡信号的时钟数，以产生第一计数值，所述参考振荡信号具有预置频率; 以及频率控制器，通过确定可变电阻器的电阻和可变电容器的电容来控制RC振荡信号的频率，使得第一计数值和预设的第二计数值之间的差小于预设的第一临界值 。

公开(公告)号：US20090160362A1

公开(公告)日：2009-06-25

申请号：US12108778

申请日：2008-04-24

申请人： Joon Hyung LIM ,  Tah Joon Park ,  Koon Shik Cho ,  Kwang Mook Lee ,  Bo II Seo

发明人： Joon Hyung LIM ,  Tah Joon Park ,  Koon Shik Cho ,  Kwang Mook Lee ,  Bo II Seo

IPC分类号： H05B37/02

CPC分类号： H05B33/086

摘要： Provided is an apparatus for controlling lighting brightness including a light control unit that generates a control signal for controlling the brightness of a plurality of lightings; a digital signal generating unit that converts a signal corresponding to the control signal at each period so as to generate non-periodic digital signals; and a driving voltage generating unit that generate driving voltages by converting the digital signals into analog signals.

摘要翻译： 提供一种用于控制照明亮度的装置，包括产生用于控制多个照明亮度的控制信号的光控制单元; 数字信号发生单元，其在每个周期转换对应于控制信号的信号，以便产生非周期数字信号; 以及通过将数字信号转换为模拟信号来产生驱动电压的驱动电压产生单元。