公开(公告)号：US08085843B2

公开(公告)日：2011-12-27

申请号：US11945816

申请日：2007-11-27

申请人： Tae Wook Kim

发明人： Tae Wook Kim

IPC分类号： H04N11/02

CPC分类号： G11B27/005 ,  H04N1/00 ,  H04N5/76 ,  H04N5/783 ,  H04N9/8042

摘要： Provided are an MP4 demultiplexer and a method of operating the same, enabling an MP4 file to be played in a fast-play mode input by a user, wherein the MP4 demultiplexer extracts all intra-frames (I-frames) among video frames in a sample track of an MP4 file, and the MP4 demultiplexer extracts predicted-frames (P-frames) by skipping, according to a fast-play speed input by a user, at least one P-frame in a succession of P-frames present between the I-frames.

摘要翻译： 提供了一种MP4解复用器及其操作方法，使MP4文件能够以用户输入的快速播放模式进行播放，其中MP4解复用器在一个视频帧中提取所有帧内（I帧） MP4文件的采样轨道，并且MP4解复用器通过根据用户输入的快速播放速度跳过提取预测帧（P帧）中的至少一个P帧，所述至少一个P帧存在于 I帧。

公开(公告)号：US07949322B2

公开(公告)日：2011-05-24

申请号：US11684120

申请日：2007-03-09

申请人： Tae Wook Kim ,  Kenneth Charles Barnett

发明人： Tae Wook Kim ,  Kenneth Charles Barnett

IPC分类号： H04B1/06 ,  H04B1/16 ,  H03F3/52

CPC分类号： H03F1/56 ,  H03F3/45188 ,  H03F2203/45296 ,  H03F2203/45316 ,  H03F2203/45511 ,  H03F2203/45512 ,  H03F2203/45704 ,  H03H11/1291

摘要： This disclosure is directed to a frequency-selective low noise amplifier (LNA) with wide-band impedance and noise matching. The LNAS may include a closed loop circuit that supports wideband input matching. For example, the closed loop circuit may be configure to impedance match an input signal and provide a low noise figure. In addition, the LNA may include an open loop circuit that amplifies the input signal and provides a high output impedance. The open loop circuit may further include a selectivity filter that filters out frequencies outside a desired frequency band. The LNA may drive a tunable band-pass filter via the open loop circuit.

摘要翻译： 本公开涉及具有宽带阻抗和噪声匹配的频率选择性低噪声放大器（LNA）。 LNAS可以包括支持宽带输入匹配的闭环电路。 例如，闭环电路可以被配置为阻抗匹配输入信号并提供低噪声系数。 此外，LNA可以包括放大输入信号并提供高输出阻抗的开环电路。 开环电路还可以包括滤除期望频带外的频率的选择性滤波器。 LNA可以通过开环电路驱动可调谐带通滤波器。

公开(公告)号：US20110099590A1

公开(公告)日：2011-04-28

申请号：US12605878

申请日：2009-10-26

申请人： Tae Wook KIM ,  Sang Rea Woo

发明人： Tae Wook KIM ,  Sang Rea Woo

IPC分类号： H04N7/18 ,  G08B13/14

CPC分类号： H04W12/06 ,  H04N21/2143 ,  H04N21/4126 ,  H04N21/4182 ,  H04N21/4367 ,  H04W84/12

摘要： A digital broadcasting system and a method for processing data in the same are disclosed. A method for controlling a digital television (DTV) located in one independent space among a plurality of independent spaces physically separated from one another is disclosed. The DTV includes an access point (AP) card. The method includes receiving guest information recorded in a storage area of a compact wireless device and a wired equivalent privacy (WEP) key value of the AP card, receiving the WEP key value corresponding to the AP card of the DTV from a management server, comparing the WEP key value received from the compact wireless device with the WEP key value received from the management server, switching an operation mode of the DTV from a power-off mode to a wake mode, if the WEP key values are identical to each other, and controlling at least one guest information received from the compact wireless device to be displayed.

摘要翻译： 公开了一种数字广播系统及其处理数据的方法。 公开了一种用于控制位于物理上彼此分离的多个独立空间中的一个独立空间中的数字电视（DTV）的方法。 数字电视包括接入点（AP）卡。 该方法包括接收记录在紧凑无线设备的存储区域中的客户信息和AP卡的有线等效保密（WEP）密钥值，从管理服务器接收对应于DTV的AP卡的WEP密钥值，比较 从管理服务器接收的具有WEP密钥值的小型无线设备接收到的WEP密钥值，如果WEP密钥值彼此相同，则将DTV的操作模式从关闭模式切换到唤醒模式， 以及控制从所述小型无线设备接收的至少一个客户信息被显示。

公开(公告)号：US07812644B2

公开(公告)日：2010-10-12

申请号：US11971654

申请日：2008-01-09

申请人： Choong-yul Cha ,  Tae-wook Kim ,  Jae-sup Lee

发明人： Choong-yul Cha ,  Tae-wook Kim ,  Jae-sup Lee

IPC分类号： G01R25/00 ,  H03D13/00

CPC分类号： H03D13/003 ,  H03L7/091

摘要： A digital frequency detector and a digital phase locked loop (PLL) are provided. The digital frequency detector includes a first conversion unit which outputs a first frequency as first frequency information of a digital type using a first ring oscillator that operates in a high-level period of the first frequency, a second conversion unit which outputs a second frequency as second frequency information of a digital type using a second ring oscillator that operates in a high-level period of the second frequency, and an operation unit which outputs a digital frequency for the first frequency by calculating a ratio of the first frequency information to the second frequency information.

摘要翻译： 提供数字频率检测器和数字锁相环（PLL）。 数字频率检测器包括：第一转换单元，其使用在第一频率的高电平周期中工作的第一环形振荡器将第一频率作为数字类型的第一频率信息输出;第二转换单元，输出第二频率作为 使用在第二频率的高电平时段中工作的第二环形振荡器的数字类型的第二频率信息，以及通过计算第一频率信息与第二频率的比率来输出第一频率的数字频率的操作单元 频率信息。

公开(公告)号：US07719352B2

公开(公告)日：2010-05-18

申请号：US11832581

申请日：2007-08-01

申请人： Tae Wook Kim ,  Kenneth Charles Barnett ,  Harish Muthali

发明人： Tae Wook Kim ,  Kenneth Charles Barnett ,  Harish Muthali

IPC分类号： H03F1/14

CPC分类号： H03F3/72 ,  H03F1/342 ,  H03F3/211 ,  H03F3/45475 ,  H03F3/68 ,  H03F2203/21142 ,  H03F2203/45731

摘要： Active circuits with isolation switches are described. In one design, an apparatus includes first and second amplifiers coupled in parallel. Each amplifier receives an input signal and provides an output signal. Each amplifier has a switch that isolates the amplifier when the amplifier is turned off. The first and second amplifiers may be high and low gain amplifiers or two low noise amplifiers (LNAs). The first and second amplifiers may be for different communication systems, different frequency bands, and/or different gain ranges. In general, any number of amplifiers may be coupled in parallel, and each amplifier may have a switch to isolate that amplifier when turned off. A switch for an amplifier may be a shunt switch coupled between an internal node of the amplifier and ground. The shunt switch may be closed when the amplifier is turned off and may be opened when the amplifier is turned on.

摘要翻译： 描述了具有隔离开关的有源电路。 在一种设计中，装置包括并联耦合的第一和第二放大器。 每个放大器接收输入信号并提供输出信号。 每个放大器都有一个开关，当放大器关闭时，隔离放大器。 第一和第二放大器可以是高和低增益放大器或两个低噪声放大器（LNA）。 第一和第二放大器可以用于不同的通信系统，不同的频带和/或不同的增益范围。 通常，任何数量的放大器可以并联耦合，并且每个放大器可以具有开关以在关断时隔离该放大器。 用于放大器的开关可以是耦合在放大器的内部节点和地之间的并联开关。 当放大器关闭时，并联开关可能关闭，并且当放大器接通时可能会断开分流开关。

公开(公告)号：US07586375B2

公开(公告)日：2009-09-08

申请号：US12146308

申请日：2008-06-25

申请人： Tae Wook Kim ,  Bonkee Kim ,  Kwyro Lee

发明人： Tae Wook Kim ,  Bonkee Kim ,  Kwyro Lee

IPC分类号： H03F3/68

CPC分类号： H03F3/505 ,  H03F1/3205 ,  H03F1/3211 ,  H03F3/345 ,  H03F2200/453 ,  H03F2203/5042

摘要： The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit unit. According to the present invention, the common gate circuit includes a main circuit unit consisting of a common gate circuit having a drain terminal through which an input signal is output as an output signal, an assistant circuit unit having a common gate circuit in order to assist the linearity of the main circuit unit, a biasing unit for biasing the main circuit unit and the assistant circuit unit, respectively, and load stages connected to output stages of the main circuit unit and the assistant circuit unit, wherein the output stages of the main circuit unit and the assistant circuit unit are coupled to each other.

摘要翻译： 本发明涉及有源电路的改进的线性度，更具体地，涉及使用主电路单元和辅助电路单元具有改进的线性度的有源电路。 根据本发明，公共门电路包括主电路单元，该主电路单元由具有输出信号作为输出信号输出的漏极端子的公共门电路组成，具有公共门电路的辅助电路单元以辅助 主电路单元的线性度，分别用于偏置主电路单元和辅助电路单元的偏置单元和连接到主电路单元和辅助电路单元的输出级的负载级，其中主电路单元和辅助电路单元的输出级 电路单元和辅助电路单元彼此耦合。

公开(公告)号：US20090153259A1

公开(公告)日：2009-06-18

申请号：US12104494

申请日：2008-04-17

申请人： Tae-wook KIM ,  Choong-yul CHA ,  Jae-sup LEE ,  Kang-yoon LEE

发明人： Tae-wook KIM ,  Choong-yul CHA ,  Jae-sup LEE ,  Kang-yoon LEE

IPC分类号： H03B5/18

CPC分类号： H03B5/1228 ,  H03B5/1215 ,  H03B5/1253 ,  H03B5/1259 ,  H03B5/1271 ,  H03B5/1293

摘要： A digitally controlled oscillator (DCO) includes a current generator which generates an electric current having a magnitude corresponding to an input signal, and a digitally controlled oscillating unit which generates an oscillating frequency based on an inductance which varies according to the magnitude of the electric current generated by the current generator.

摘要翻译： 数字控制振荡器（DCO）包括产生具有对应于输入信号的幅度的电流的电流发生器，以及数字控制的振荡单元，其基于根据电流的大小而变化的电感产生振荡频率 由当前发电机产生。

公开(公告)号：US07525386B2

公开(公告)日：2009-04-28

申请号：US12146299

申请日：2008-06-25

申请人： Tae Wook Kim ,  Bonkee Kim ,  Kwyro Lee

发明人： Tae Wook Kim ,  Bonkee Kim ,  Kwyro Lee

IPC分类号： H03F3/68

CPC分类号： H03F3/505 ,  H03F1/3205 ,  H03F1/3211 ,  H03F3/345 ,  H03F2200/453 ,  H03F2203/5042

摘要： The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit unit. According to the present invention, the common gate circuit includes a main circuit unit consisting of a common gate circuit having a drain terminal through which an input signal is output as an output signal, an assistant circuit unit having a common gate circuit in order to assist the linearity of the main circuit unit, a biasing unit for biasing the main circuit unit and the assistant circuit unit, respectively, and load stages connected to output stages of the main circuit unit and the assistant circuit unit, wherein the output stages of the main circuit unit and the assistant circuit unit are coupled to each other.

公开(公告)号：US07400211B2

公开(公告)日：2008-07-15

申请号：US11471512

申请日：2006-06-21

申请人： Jae Sup Lee ,  Tae Wook Kim ,  Seung Woo Kim ,  Jeong Hoon Lee ,  Young Sik Kim

发明人： Jae Sup Lee ,  Tae Wook Kim ,  Seung Woo Kim ,  Jeong Hoon Lee ,  Young Sik Kim

IPC分类号： H03C3/08

CPC分类号： H03K7/04 ,  H04L27/20

摘要： A high speed passband phase modulation apparatus and method are provided. In the phase modulation apparatus, an RF phase shifter modulates a phase of a local signal that is generated in a VCO according to a digital input. The RF phase shifter is controlled by a phase-controlled loop so that a baseband phase shifter is phased locked to a modulation reference signal from the local signal and a reference clock signal according to the digital input. The phase-controlled loop phase-locks using the modulation reference signal so that the phase-modulated signal generated in the RF phase shifter has a phase value according to the digital input.

摘要翻译： 提供了一种高速通带相位调制装置和方法。 在相位调制装置中，RF移相器根据数字输入调制在VCO中生成的本地信号的相位。 RF移相器由相控环路控制，使得基带移相器根据数字输入从本地信号和参考时钟信号被锁相到调制参考信号。 使用调制参考信号的相位控制环相位锁定，使得在RF移相器中产生的相位调制信号具有根据数字输入的相位值。

公开(公告)号：US07342432B2

公开(公告)日：2008-03-11

申请号：US10775234

申请日：2004-02-11

申请人： Tae-Wook Kim ,  Bon-Kee Kim ,  Kwy-Ro Lee

发明人： Tae-Wook Kim ,  Bon-Kee Kim ,  Kwy-Ro Lee

IPC分类号： G06G7/16

CPC分类号： H03F3/45089 ,  H03F2203/45318 ,  H03F2203/45496 ,  H03F2203/45702

摘要： A mixer circuit having improved linearity and noise figure is disclosed. The mixer circuit comprises an amplification unit having an input terminal and an output terminal, the amplification unit amplifying a signal applied to the input terminal to output it to the output terminal; a mixing unit having first, second and third input terminals, and first and second output terminals, the mixing unit mixing signals respectively applied to the first and second input terminals with a signal supplied to the third input terminal, to respectively output the mixed signals to the first and second output terminals; a capacitor connected between the output terminal of the amplification unit and the third input terminal of the mixing unit; and a current source for providing a specific quantity of current to the third input terminal of the mixing unit such that the quantity of current flowing through the third input terminal of the mixing unit is substantially larger than the quantity of current flowing through the amplification unit.

摘要翻译： 公开了具有改进的线性和噪声系数的混频器电路。 所述混频电路包括具有输入端和输出端的放大单元，所述放大单元放大施加到所述输入端的信号，将其输出到所述输出端; 混合单元，具有第一，第二和第三输入端以及第一和第二输出端，所述混合单元将分别施加到第一和第二输入端的信号与提供给第三输入端的信号混合，分别输出混合信号 第一和第二输出端子; 连接在所述放大单元的输出端子和所述混频单元的第三输入端子之间的电容器; 以及电流源，用于向混合单元的第三输入端提供特定量的电流，使得流过混合单元的第三输入端的电流量大大地大于流过放大单元的电流量。