公开(公告)号：US08107574B2

公开(公告)日：2012-01-31

申请号：US12200366

申请日：2008-08-28

申请人： Yeon Kug Moon ,  Tae Ho Hwang ,  Dong Sun Kim ,  Kwang Ho Won ,  Yong Kuk Park

发明人： Yeon Kug Moon ,  Tae Ho Hwang ,  Dong Sun Kim ,  Kwang Ho Won ,  Yong Kuk Park

IPC分类号： H04B1/10

CPC分类号： H04L25/0288 ,  H04L25/0272

摘要： A filter tuning circuit for a wireless communication system is provided. A filter tuning circuit includes a comparator and a counter which control a transconvertance value of a differential transconverter to tune a filter.

摘要翻译： 提供了一种用于无线通信系统的滤波器调谐电路。 滤波器调谐电路包括比较器和计数器，其控制差分转换器的跨转换值来调谐滤波器。

公开(公告)号：US07323935B2

公开(公告)日：2008-01-29

申请号：US11271455

申请日：2005-11-10

申请人： Sung-Gi Yang ,  Yeon-Kug Moon

发明人： Sung-Gi Yang ,  Yeon-Kug Moon

IPC分类号： H03F3/45

CPC分类号： H03F3/45807 ,  H03F3/45251 ,  H03F3/45286 ,  H03F2203/45424

摘要： A complementary transconductance amplifier having a common mode feedback circuit includes a first-type transconductor, a second-type transconductor and a common mode feedback circuit. The first-type transconductor generates a first differential output signal pair in response to a differential input signal pair under the control of a first control signal. The second-type transconductor generates a second differential output signal pair in response to the differential input signal pair under the control of a second control signal. The common mode feedback circuit generates the second control signal in response to the first and second differential output signal pairs under the control of a common mode control signal.

摘要翻译： 具有共模反馈电路的互补跨导放大器包括第一类型跨导体，第二类型跨导体和共模反馈电路。 第一类型跨导器在第一控制信号的控制下响应于差分输入信号对产生第一差分输出信号对。 第二类型的跨导体在第二控制信号的控制下响应差分输入信号对产生第二差分输出信号对。 共模反馈电路在共模控制信号的控制下响应于第一和第二差分输出信号对产生第二控制信号。

公开(公告)号：US20100057958A1

公开(公告)日：2010-03-04

申请号：US12200439

申请日：2008-08-28

申请人： Dong Sun Kim ,  Tae Ho Hwang ,  Yeon Kug Moon ,  Kwang Ho Won

发明人： Dong Sun Kim ,  Tae Ho Hwang ,  Yeon Kug Moon ,  Kwang Ho Won

IPC分类号： G06F13/42

CPC分类号： H04W99/00 ,  H04W74/00 ,  H04W84/10

摘要： There is provided a digital MAC apparatus for an IEEE 802.15.4 based communication system, which is implemented in hardware. The digital MAC apparatus having a processor of a Wireless Personal Area Network (WPAN) communication system and a data bus transferring data includes a frame generating unit generating and outputting a frame on the basis of input data; a frame parsing unit parsing an input frame input through the data bus, and generating and outputting a control signal or transmission and receipt data; and a controller operating at least one of the frame generating unit and the frame parsing unit according to the generated control signal, and communicating the output frame or data with the processor according to the operation.

摘要翻译： 提供了一种用于基于IEEE 802.15.4的通信系统的数字MAC设备，其以硬件实现。 具有无线个域网（WPAN）通信系统的处理器和数据总线传送数据的数字MAC设备包括：帧生成单元，基于输入数据生成并输出帧; 帧解析单元解析通过数据总线输入的输入帧，并且生成并输出控制信号或发送和接收数据; 以及根据生成的控制信号来操作帧生成单元和帧解析单元中的至少一个的控制器，并且根据该操作与输入帧或数据与处理器通信。

公开(公告)号：US07590391B2

公开(公告)日：2009-09-15

申请号：US11616451

申请日：2006-12-27

申请人： Hae-Moon Seo ,  Yeon-Kug Moon ,  Young-Kuk Park ,  Kwang-Ho Won ,  Seong-Dong Kim

发明人： Hae-Moon Seo ,  Yeon-Kug Moon ,  Young-Kuk Park ,  Kwang-Ho Won ,  Seong-Dong Kim

IPC分类号： H04B1/38 ,  H04B1/04 ,  H04L27/00

CPC分类号： H04B1/0475 ,  H04B2001/0491

摘要： A digital intermediate frequency transmitter for a wireless communication is disclosed. In accordance with the present invention, an improvement of a modulation quality such as an EVM, a linearity and a power consumption is possible, and a main characteristic of a wireless communication transmitter may be embodied at a low cost through an integration such that a high frequency 90° phase shifter, a voltage controlled oscillator having a 2× frequency or higher and a high frequency I/Q local oscillated signals are not required and a side-band signal may be effectively removed.

摘要翻译： 公开了一种用于无线通信的数字中频发射机。 根据本发明，可以提高诸如EVM，线性度和功耗的调制质量，并且通过集成可以以低成本实现无线通信发射机的主要特征，使得高 频率90°移相器，不需要具有2x频率或更高频率的高压I / Q本地振荡信号的压控振荡器，并且可以有效地去除边带信号。

公开(公告)号：US20090172684A1

公开(公告)日：2009-07-02

申请号：US12193875

申请日：2008-08-19

申请人： Tae Ho HWANG ,  Yeon Kug MOON ,  Dong Sun KIM ,  Kwang Ho WON

发明人： Tae Ho HWANG ,  Yeon Kug MOON ,  Dong Sun KIM ,  Kwang Ho WON

IPC分类号： G06F9/46 ,  G06F13/24 ,  G06F1/04

CPC分类号： G06F13/24 ,  G06F1/3203 ,  G06F1/329 ,  G06F9/4887 ,  Y02D10/24

摘要： Provided are a small low power embedded system and a preemption avoidance method thereof. A method for avoiding preemption in a small low power embedded system includes fetching and running a periodic atomic task from a periodic run queue, reducing any one of periodic atomic tasks or performing the change of a task after changing a field of the run periodic atomic task into a run standby state, according to a result value of the run of the periodic atomic task, fetching a sporadic atomic task from a sporadic run queue, and acquiring a system clock, running the fetched sporadic atomic task according to run time in the worst condition, and reducing any one of sporadic atomic tasks or performing the change of an event after a field of the run sporadic atomic task into a run standby state, according to a result value of the run of the sporadic atomic task.

摘要翻译： 提供了一种小型低功率嵌入式系统及其抢占避免方法。 一种在小型低功率嵌入式系统中避免抢占的方法包括从周期性运行队列中取出和运行周期性原子任务，减少任何一个周期性原子任务，或者在改变运行周期性原子任务的一个字段之后执行任务改变 根据周期性原子任务运行的结果值，从零星运行队列中获取零星原子任务，并获取系统时钟，根据运行时间最差运行获取的零星原子任务，进入运行待机状态 条件，并且根据零星原子任务的运行的结果值，减少零星原子任务中的任何一个或者在运行零星原子任务的字段之后的事件的更改进入运行备用状态。

公开(公告)号：US20080132182A1

公开(公告)日：2008-06-05

申请号：US11616451

申请日：2006-12-27

申请人： Hae-Moon SEO ,  Yeon-Kug Moon ,  Young-Kuk Park ,  Kwang-Ho Won ,  Seong-Dong Kim

发明人： Hae-Moon SEO ,  Yeon-Kug Moon ,  Young-Kuk Park ,  Kwang-Ho Won ,  Seong-Dong Kim

IPC分类号： H04B1/034

CPC分类号： H04B1/0475 ,  H04B2001/0491

摘要： A digital intermediate frequency transmitter for a wireless communication is disclosed. In accordance with the present invention, an improvement of a modulation quality such as an EVM, a linearity and a power consumption is possible, and a main characteristic of a wireless communication transmitter may be embodied at a low cost through an integration such that a high frequency 90° phase shifter, a voltage controlled oscillator having a 2× frequency or higher and a high frequency I/Q local oscillated signals are not required and a side-band signal may be effectively removed.

摘要翻译： 公开了一种用于无线通信的数字中频发射机。 根据本发明，可以提高诸如EVM，线性度和功耗的调制质量，并且通过集成可以以低成本实现无线通信发射机的主要特征，使得高 频率90°移相器，不需要具有2x频率或更高频率的高压I / Q本地振荡信号的压控振荡器，并且可以有效地去除边带信号。