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1. 发明授权

US07076221B2 Digital automatic fine tuning method and apparatus 失效
标题翻译：数字自动微调方法及装置
公开(公告)号：US07076221B2
公开(公告)日：2006-07-11
申请号：US10695758
申请日：2003-10-30
申请人： Young Jin Lee , Hyo Seok Kwon , Won Jin Baek , Jin Taek Lee , Hyun Hwan Yoo , Jeong Ki Choi
发明人： Young Jin Lee , Hyo Seok Kwon , Won Jin Baek , Jin Taek Lee , Hyun Hwan Yoo , Jeong Ki Choi
IPC分类号： H04B1/18 , H04N5/50
CPC分类号： H03J1/0041 , H03J2200/02
摘要： Disclosed herein is a digital automatic fine tuning method and apparatus, which is capable of detecting a difference between a nominal frequency and an intermediate frequency generated in a tuner using a counter, and applying the counted data of the counter as a fine tuning value for the intermediate frequency without using a decoder by controlling the reset and preset operations of the counter that counts the frequency of the intermediate frequency.
摘要翻译：这里公开了一种数字自动微调方法和装置，其能够使用计数器检测在调谐器中产生的标称频率和中频之间的差异，并将计数器的计数数据应用于微调值通过控制对中频的频率进行计数的计数器的复位和预置操作而不使用解码器的中频。

2. 发明授权

US07514980B2 Exponential function generator and variable gain amplifier using the same 失效
标题翻译：指数函数发生器和可变增益放大器使用相同
公开(公告)号：US07514980B2
公开(公告)日：2009-04-07
申请号：US11420728
申请日：2006-05-26
申请人： Jeong Ki Choi , Won Jin Baek , Hyun Hwan Yoo , Seung Min Oh
发明人： Jeong Ki Choi , Won Jin Baek , Hyun Hwan Yoo , Seung Min Oh
IPC分类号： G06F7/556 , G06G7/20 , G06G7/24
CPC分类号： H03G7/001
摘要： The present invention relates to an exponential function generator which is realized with only CMOS element without BJT element, not limited by the physical properties of the element or a square circuit, and not complicated in its configuration, and a variable gain amplifier using the same. The exponential function generator includes a voltage-current converter, 1st to nth curve generators for mirroring the current from the voltage-current converter, outputting a current adjusted according to a predetermined ratio, and an output end for outputting the sum of the current from the 1st to nth curve generators. The exponential current generator is configured to generate the current exponentially adjusted according to the control voltage.
摘要翻译：本发明涉及一种仅使用没有BJT元件的CMOS元件实现的指数函数发生器，不受元件或平方电路的物理特性限制，并且其结构不复杂，以及使用其的可变增益放大器。指数函数发生器包括电压 - 电流转换器，用于镜像来自电压 - 电流转换器的电流的第1至第n曲线发生器，输出根据预定比率调节的电流，以及输出端，用于输出来自第1〜第n曲线发生器。指数电流发生器被配置为根据控制电压产生指数调节的电流。

3. 发明申请

US20060256216A1 Downconverter and upconverter 失效
公开(公告)号：US20060256216A1
公开(公告)日：2006-11-16
申请号：US11403980
申请日：2006-04-13
申请人： Kishi Takahiko , Sato Takahiro , Won-Jin Baek , Jeong-Ki Choi
发明人： Kishi Takahiko , Sato Takahiro , Won-Jin Baek , Jeong-Ki Choi
IPC分类号： H04N5/247
CPC分类号： H03D7/166 , H03D3/007 , H03D7/18
摘要： A downconverter and upconverter are provided which can obtain a sufficient image rejection ratio in a low-Intermediate Frequency (IF) scheme while reducing power consumption and can suppress Error Vector Magnitude (EVM)-related degradation in a zero-IF scheme. A complex-coefficient transversal filter rejects one side of a positive or negative frequency, and converts a Radio Frequency (RF) signal to a complex RF signal configured by real and imaginary parts. A local oscillator outputs a real local signal with a set frequency. A half-complex mixer, connected to the complex-coefficient transversal filter and the local oscillator, performs a frequency conversion process by multiplying the complex RF signal output from the complex-coefficient transversal filter and the real local signal output from the local oscillator, and outputs a complex signal of a frequency separated by the set frequency from a frequency of the RF signal.

4. 发明申请

US20050048936A1 Digital automatic fine tuning method and apparatus 失效
标题翻译：数字自动微调方法及装置
公开(公告)号：US20050048936A1
公开(公告)日：2005-03-03
申请号：US10695758
申请日：2003-10-30
申请人： Young Jin Lee , Hyo Seok Kwon , Won Jin Baek , Jin Taek Lee , Hyun Hwan Yoo , Jeong Ki Choi
发明人： Young Jin Lee , Hyo Seok Kwon , Won Jin Baek , Jin Taek Lee , Hyun Hwan Yoo , Jeong Ki Choi
IPC分类号： H04N5/50 , H03J1/00 , H01Q11/12
CPC分类号： H03J1/0041 , H03J2200/02
摘要： Disclosed herein is a digital automatic fine tuning method and apparatus, which is capable of detecting a difference between a nominal frequency and an intermediate frequency generated in a tuner using a counter, and applying the counted data of the counter as a fine tuning value for the intermediate frequency without using a decoder by controlling the reset and preset operations of the counter that counts the frequency of the intermediate frequency.
摘要翻译：这里公开了一种数字自动微调方法和装置，其能够使用计数器检测在调谐器中产生的标称频率和中频之间的差异，并将计数器的计数数据应用于微调值通过控制对中频的频率进行计数的计数器的复位和预置操作而不使用解码器的中频。

5. 发明申请

US20090280762A1 HIGH-ORDER HARMONIC REJECTION MIXER USING CURRENT STEERING TECHNIQUE 审中-公开
标题翻译：使用电流转向技术的高阶谐波抑制混频器
公开(公告)号：US20090280762A1
公开(公告)日：2009-11-12
申请号：US12259619
申请日：2008-10-28
申请人： Kyoung Seok PARK , Nam Heung KIM , Jeong Ki CHOI , Yo Sub MOON , Gyu Suck KIM , Seung Won SEO , Yoo Hwan KIM
发明人： Kyoung Seok PARK , Nam Heung KIM , Jeong Ki CHOI , Yo Sub MOON , Gyu Suck KIM , Seung Won SEO , Yoo Hwan KIM
IPC分类号： H04B1/16
CPC分类号： H03D7/1441 , H03D7/1483 , H03D2200/0043 , H03D2200/0086
摘要： A mixer includes, an input current generation unit generating an input current; a first path circuit unit including n number of transistors having sources connected in common to an output node of the input current generation unit; and a second path circuit unit including n number of transistors having sources connected in common to the output node of the input current generation unit, and respectively corresponding to the n number of transistors included in the first path circuit unit. Local oscillator signals sequentially phase-shifted by 180°/n are individually input to gates of the n number of transistors included in the first path circuit unit, and local oscillator signals having opposite phases to the local oscillator signals input to the gates of the corresponding transistors included in the first path circuit unit are individually input to gates of the n number of transistors included in the second path circuit unit.
摘要翻译：混合器包括：输入电流产生单元，其产生输入电流; 包括n个晶体管的第一路径电路单元，其源极共同连接到输入电流产生单元的输出节点; 以及第二路径电路单元，其包括n个晶体管，其源极共同连接到输入电流产生单元的输出节点，并且分别对应于包括在第一路径电路单元中的n个晶体管。顺序相移180°/ n的本地振荡器信号被分别输入到包括在第一路径电路单元中的n个晶体管的栅极，并且与本地振荡器信号相反的本地振荡器信号输入到相应的门包括在第一路径电路单元中的晶体管被单独地输入到包括在第二路径电路单元中的n个晶体管的栅极。

6. 发明申请

US20100073081A1 INTEGRATED TRACKING FILTER 审中-公开
标题翻译：集成跟踪过滤器
公开(公告)号：US20100073081A1
公开(公告)日：2010-03-25
申请号：US12394677
申请日：2009-02-27
申请人： Yo Sub MOON , Jeong Ki Choi , Yoo Hwan Kim , Gyu Suck Kim , Kyoung Seok Park
发明人： Yo Sub MOON , Jeong Ki Choi , Yoo Hwan Kim , Gyu Suck Kim , Kyoung Seok Park
IPC分类号： H03K5/00
CPC分类号： H03H11/1291
摘要： An integrated tracking filter includes: an amplifying unit having first to third terminals, the first terminal being connected to an input stage and the second terminal being connected to an output stage, and amplifying a signal from the input stage; a loading unit connected between a power source stage and the second terminal of the amplifying unit; a current source connected between the third terminal of the amplifying unit and a ground; and a switched LC filter unit connected between the third terminal of the amplifying unit and the ground and varying a pass band of the signal.
摘要翻译：集成跟踪滤波器包括：放大单元，具有第一至第三端子，第一端子连接到输入级，第二端子连接到输出级，并且放大来自输入级的信号; 连接在电源级与放大单元的第二端子之间的负载单元; 连接在放大单元的第三端子与地之间的电流源; 以及连接在放大单元的第三端子和地之间并改变信号的通带的开关LC滤波器单元。

7. 发明授权

US07627295B2 Downconverter and upconverter 失效
标题翻译：下变频器和上变频器
公开(公告)号：US07627295B2
公开(公告)日：2009-12-01
申请号：US11403980
申请日：2006-04-13
申请人： Kishi Takahiko , Sato Takahiro , Won-Jin Baek , Jeong-Ki Choi
发明人： Kishi Takahiko , Sato Takahiro , Won-Jin Baek , Jeong-Ki Choi
IPC分类号： H04B17/02
CPC分类号： H03D7/166 , H03D3/007 , H03D7/18
摘要： A downconverter and upconverter are provided which can obtain a sufficient image rejection ratio in a low-Intermediate Frequency (IF) scheme while reducing power consumption and can suppress Error Vector Magnitude (EVM)-related degradation in a zero-IF scheme. A complex-coefficient transversal filter rejects one side of a positive or negative frequency, and converts a Radio Frequency (RF) signal to a complex RF signal configured by real and imaginary parts. A local oscillator outputs a real local signal with a set frequency. A half-complex mixer, connected to the complex-coefficient transversal filter and the local oscillator, performs a frequency conversion process by multiplying the complex RF signal output from the complex-coefficient transversal filter and the real local signal output from the local oscillator, and outputs a complex signal of a frequency separated by the set frequency from a frequency of the RF signal.
摘要翻译：提供下变频器和上变频器，其可以在降低功率消耗的同时在低中频（IF）方案中获得足够的镜像抑制比，并且可以抑制零中频方案中的误差矢量幅度（EVM）相关的劣化。复系数横向滤波器拒绝正或负频率的一侧，并将射频（RF）信号转换为由实部和虚部配置的复合RF信号。本地振荡器输出具有设定频率的实际本地信号。连接到复系数横向滤波器和本地振荡器的半复合混频器通过将从复系数横向滤波器输出的复RF信号与从本地振荡器输出的实局信号相乘来执行频率转换处理，以及从RF信号的频率输出由设定频率分开的频率的复信号。

8. 发明申请

US20060293012A1 TERRESTIAL DIGITAL MULTIMEDIA BROADCASTING RECEIVER 审中-公开
标题翻译：陆军数字多媒体广播接收机
公开(公告)号：US20060293012A1
公开(公告)日：2006-12-28
申请号：US11422060
申请日：2006-06-02
申请人： BYEONG HAK JO , WON JIN BAEK , JEONG KI CHOI , KYUNG SEOK PARK
发明人： BYEONG HAK JO , WON JIN BAEK , JEONG KI CHOI , KYUNG SEOK PARK
IPC分类号： H04B1/06
CPC分类号： H03D7/18 , H03D7/166 , H03J2200/40
摘要： The present invention relates to a terrestrial DMB receiver capable of eliminating image noise and minimizing the number of external elements. In the invention, a terrestrial DMB signal is down-converted into a baseband I/Q signal and then up-converted into a predetermined intermediate frequency signal. The invention solves the problematic image noise and minimizes the number of external elements at the same time.
摘要翻译：本发明涉及能够消除图像噪声并最小化外部元件的数量的地面DMB接收机。在本发明中，地面DMB信号被下变频为基带I / Q信号，然后上变频成预定的中频信号。本发明解决了有问题的图像噪声，同时最大限度地减少了外部元件的数量。

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