专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07586293B2 Digital modulation circuit 有权
标题翻译：数字调制电路
公开(公告)号：US07586293B2
公开(公告)日：2009-09-08
申请号：US11847761
申请日：2007-08-30
申请人： Man Suk Seo , Hyung Cheol Park , Seong Soo Lee , Sang Yub Lee , Chang Soo Yang , Wan Cheol Yang
发明人： Man Suk Seo , Hyung Cheol Park , Seong Soo Lee , Sang Yub Lee , Chang Soo Yang , Wan Cheol Yang
IPC分类号： H04L27/20
CPC分类号： H03C3/02 , H03C1/02 , H03K7/04 , H03K2005/00247 , H04B1/71635
摘要： Provided is a digital modulation circuit constructed with only a digital circuit. The digital modulation circuit includes: a clock generator which generates a reference clock pulse having a predetermined period; an up/down counter which generates a count value having predetermined bits by up-counting or down-counting the reference clock pulse and outputs a bit in the count value as a transmission signal; a controller which determines a counting start/end time point of the up/down counter and determine which one of the up-counting operation and the down-counting operation of the up/down counter is to be performed, according to a value of digital transmission data that is to be transmitted; and a band-pass filter which converts a waveform of the transmission signal output from the up/down counter into a sine waveform.
摘要翻译：提供了仅由数字电路构成的数字调制电路。数字调制电路包括：时钟发生器，其产生具有预定周期的参考时钟脉冲; 向上/向下计数器，其通过对参考时钟脉冲进行向上计数或递减计数来产生具有预定位的计数值，并将计数值中的位作为发送信号输出; 确定上/下计数器的计数开始/结束时间点的控制器，并根据数字的数值确定要执行向上/向下计数器的向上计数操作和向下计数操作中的哪一个要发送的发送数据; 以及将从上/下计数器输出的发送信号的波形转换为正弦波形的带通滤波器。

2. 发明申请

US20080055139A1 DIGITAL MODULATION CIRCUIT 有权
标题翻译：数字调制电路
公开(公告)号：US20080055139A1
公开(公告)日：2008-03-06
申请号：US11847761
申请日：2007-08-30
申请人： Man Suk Seo , Hyung Cheol Park , Seong Soo Lee , Sang Yub Lee , Chang Soo Yang , Wan Cheol Yang
发明人： Man Suk Seo , Hyung Cheol Park , Seong Soo Lee , Sang Yub Lee , Chang Soo Yang , Wan Cheol Yang
IPC分类号： H03M1/66
CPC分类号： H03C3/02 , H03C1/02 , H03K7/04 , H03K2005/00247 , H04B1/71635
摘要： Provided is a digital modulation circuit constructed with only a digital circuit. The digital modulation circuit includes: a clock generator which generates a reference clock pulse having a predetermined period; an up/down counter which generates a count value having predetermined bits by up-counting or down-counting the reference clock pulse and outputs a bit in the count value as a transmission signal; a controller which determines a counting start/end time point of the up/down counter and determine which one of the up-counting operation and the down-counting operation of the up/down counter is to be performed, according to a value of digital transmission data that is to be transmitted; and a band-pass filter which converts a waveform of the transmission signal output from the up/down counter into a sine waveform.
摘要翻译：提供了仅由数字电路构成的数字调制电路。数字调制电路包括：时钟发生器，其产生具有预定周期的参考时钟脉冲; 向上/向下计数器，其通过对参考时钟脉冲进行向上计数或递减计数来产生具有预定位的计数值，并将计数值中的位作为发送信号输出; 确定上/下计数器的计数开始/结束时间点的控制器，并根据数字的数值确定要执行向上/向下计数器的向上计数操作和向下计数操作中的哪一个要发送的发送数据; 以及将从上/下计数器输出的发送信号的波形转换为正弦波形的带通滤波器。

3. 发明申请

US20080205536A1 I/Q REGENERATION DEVICE OF FIVE-PORT NETWORK 审中-公开
标题翻译： I / Q五端口网络再生设备
公开(公告)号：US20080205536A1
公开(公告)日：2008-08-28
申请号：US12037537
申请日：2008-02-26
申请人： Sang Yub Lee , Hyung Cheol Park , Chang Soo Yang , Hak Sun Kim
发明人： Sang Yub Lee , Hyung Cheol Park , Chang Soo Yang , Hak Sun Kim
IPC分类号： H04L23/02
CPC分类号： H04L27/3845
摘要： There is provided an I/Q regeneration device of a five-port network which adopts a single-frequency continuous wave signal in place of a specific modulated signal such as a QPSK signal to estimate an I/Q regeneration parameter of the five-port network. The I/Q regeneration device of the five-port network including: a five-port network distributing an input signal as three signals and adding the three signals to first, second and third carrier signals, respectively to output first, second and third phase signals each having a phase different from one another; a power detection part detecting a power of each of the first, second and third phase signals from the five-port network to output first, second and third power detection signals; and a post-processing part restoring original data in response to the first, second and third power detection signals.
摘要翻译：提供了一种五端口网络的I / Q再生装置，其采用单频连续波信号代替诸如QPSK信号的特定调制信号来估计五端口网络的I / Q再生参数。五端口网络的I / Q再生装置包括：分配输入信号作为三个信号的五端口网络，并将三个信号分别相加于第一，第二和第三载波信号，以输出第一，第二和第三相位信号每个具有彼此不同的相位; 功率检测部分，检测来自五端口网络的第一，第二和第三相位信号中的每一个的功率，以输出第一，第二和第三功率检测信号; 以及后处理部分，响应于第一，第二和第三功率检测信号来恢复原始数据。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式