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    • 1. 发明授权
    • Apparatus for sequentially enabling and disabling multiple powers
    • 用于顺序启用和禁用多个功率的装置
    • US07464275B2
    • 2008-12-09
    • US11213059
    • 2005-08-26
    • Tae Young LimHan Jin ChoSoon Il YeoIg Kyun KimKyoung Seon ShinHee Bum Jung
    • Tae Young LimHan Jin ChoSoon Il YeoIg Kyun KimKyoung Seon ShinHee Bum Jung
    • G06F1/26
    • G06F1/26
    • Provided is an apparatus for controlling multiple powers which is capable of turning on and off the multiple powers in their priorities for systems or components to be supplied with the multiple powers such as a liquid crystal display (LCD) module. In the apparatus for controlling multiple powers, an on-signal of high level is applied to an input terminal, and an output of a control signal generating unit is sequentially changed to a high level whenever a clock is applied to a clock signal input terminal by one period, so that outputs of the multiple powers are sequentially output. In addition, an off signal of low level is applied to the input terminal, and an output of the control signal generating unit is changed to a low level in a reversal order whenever a clock is applied to the clock signal input terminal by one period, so that outputs of the multiple powers are interrupted in the reversal order.
    • 本发明提供了一种用于控制多个功率的装置,其能够在要提供给诸如液晶显示器(LCD)模块的多个功率的系统或组件的优先级中打开和关闭多个功率。 在用于控制多个功率的装置中,将高电平的接通信号施加到输入端,并且每当时钟被施加到时钟信号输入端时,控制信号产生单元的输出被顺序地改变为高电平 一个周期,从而顺序输出多个功率的输出。 此外,只要将时钟施加到时钟信号输入端子一个周期,则将低电平的关闭信号施加到输入端子,并且控制信号产生单元的输出以反转次序改变为低电平, 使得多个功率的输出以反转顺序中断。
    • 2. 发明授权
    • Low offset automatic frequency tuning circuits for continuous-time filter
    • 低偏移自动频率调谐电路,用于连续时间滤波
    • US06400932B1
    • 2002-06-04
    • US09454389
    • 1999-12-03
    • Chang Jun OhJong Kee KwonJong Ryul LeeWon Chul SongHee Bum JungKyung Soo KimHan Jin ChoOok Kim
    • Chang Jun OhJong Kee KwonJong Ryul LeeWon Chul SongHee Bum JungKyung Soo KimHan Jin ChoOok Kim
    • H04B118
    • H03H11/0422H03L7/06
    • The present invention relates to a tuning circuit, more specifically to a tuning circuit for continuous-time filter capable of making exact the Gm value to minimize the variation of the cutoff frequency due to the variation of process in the Gm-C type of continuous-time filter. According to the invention, a frequency tuning circuit is provided which comprises integrating means for generating a signal discharging from a first reference voltage to a first predetermined value and a signal charging from a second reference voltage to a second predetermined value; offset sampling means for sampling the offset voltages of the Gm cells by receiving a current multiplied by the offset voltages from the Gm cells included in the integrating means and providing a feedback path between the output nodes and the input nodes of the included Gm cells; comparative signal generating means for generating a comparative signal by generating a reference signal by dividing a clock inputted from the external, receiving the signal discharging from the first reference voltage to the first predetermined value and the signal charging from the second reference voltage to the second predetermined value from the integrating means, and comparing the actual intersection and the target intersection of these signals; and control means for generating a control signal to regulate the Gm values of the integrating means and the offset sampling means by receiving the reference signal and the comparative signal from the comparative signal generating means and detecting the phase differences therebetween.
    • 调谐电路技术领域本发明涉及一种调谐电路,更具体地说涉及一种用于连续时间滤波器的调谐电路,其能够精确地确定Gm值,以使由于Gm-C型连续时间滤波器中的工艺变化引起的截止频率的变化最小化, 时间过滤器。 根据本发明,提供了一种频率调谐电路,其包括用于产生从第一参考电压放电到第一预定值的信号的积分装置和从第二参考电压到第二预定值的信号充电; 偏移采样装置,用于通过接收与积分装置中包括的Gm单元的偏移电压相乘的电流来对Gm单元的偏移电压进行采样,并在输出节点和所包括的Gm单元的输入节点之间提供反馈路径; 比较信号发生装置,用于通过将从外部输入的时钟分频,将从第一参考电压放电的信号接收到第一预定值和从第二参考电压到第二预定值的信号充电来产生参考信号, 从积分装置获取值,并比较这些信号的实际交点和目标交点; 以及控制装置,用于通过从比较信号发生装置接收参考信号和比较信号并检测它们之间的相位差,产生控制信号以调节积分装置和偏移采样装置的Gm值。
    • 7. 发明申请
    • Inverse modified discrete cosine transform (IMDCT) co-processor and audio decoder having the same
    • 协处理器和音频解码器的逆修正离散余弦变换(IMDCT)具有相同的功能
    • US20070050440A1
    • 2007-03-01
    • US11432100
    • 2006-05-11
    • Suk Ho LeeNak Woong EumHee Bum Jung
    • Suk Ho LeeNak Woong EumHee Bum Jung
    • G06F17/14
    • G06F17/147G10L19/16
    • Provided are an IMDCT co-processor and an audio decoder having the same. The IMDCT co-processor includes: an input buffer for storing an input inverse-quantized frequency spectrum sample value; an I/Q separator for dividing the sample value stored in the input buffer into real data I and imaginary data Q; a first operation unit for performing complex-multiplication on the data divided by the I/Q separator and a given twiddle factor; an IFFT unit for performing an inverse fast Fourier transform on the operation result value of the first operation unit; a second operation unit for performing complex-multiplication on the result value from the IFFT unit and a given twiddle factor; a deinterleaver for receiving the operation result value from the second operation unit to arrange data and performing inverse-mapping on a positive value (+) and a negative value (−) of a certain portion of the data to each other to output a final IMDCT time sample value; and a control register for selecting the input inverse-quantized frequency spectrum sample value according to a given window sequence value to determine the final IMDCT time sample value.
    • 提供了一种IMDCT协处理器和具有其的音频解码器。 IMDCT协处理器包括:输入缓冲器,用于存储输入的反量化频谱样本值; I / Q分离器,用于将存储在输入缓冲器中的采样值分成实数数据I和虚数据Q; 第一操作单元,用于对由I / Q分离器划分的数据和给定的旋转因子进行复数乘法; IFFT单元,用于对第一操作单元的操作结果值进行快速傅立叶逆变换; 第二操作单元,用于对来自IFFT单元的结果值和给定的旋转因子进行复数乘法; 去交织器,用于从第二操作单元接收操作结果值以排列数据并且对数据的某一部分的正值(+)和负值( - )进行反向映射,以输出最终的IMDCT 时间样本值; 以及控制寄存器,用于根据给定的窗口序列值选择输入的反量化频谱采样值,以确定最终的IMDCT时间采样值。
    • 8. 发明授权
    • Methods for coding and decoding nibble inversion codes and block inversion codes and coding and decoding apparatus for the same
    • 用于编码和解码半字节反转码和块反转码的方法及其编码和解码装置
    • US06366223B1
    • 2002-04-02
    • US09350097
    • 1999-07-09
    • Bhum Cheol LeeBong Soo KimHee Bum JungKwon Chul ParkSeok Youl Kang
    • Bhum Cheol LeeBong Soo KimHee Bum JungKwon Chul ParkSeok Youl Kang
    • H03M700
    • H03M5/04
    • A nibble inversion and block inversion code coding and decoding method and a coding and decoding apparatus for the same. The apparatus includes a disparity calculator for receiving a pre-code in which a nibble-inverted indication (NII) bit is added at the position next to the LSB of a source data of a n-bit (n represents an odd number higher than 3), computing a disparity Dpc value of the pre-code, computing a disparity value Dni of the odd bit nibble-inverted pre-code, decoding a code type in accordance with the value of the register and the value of the running digital sum RDS which represent the disparity code and outputting a control signal for manipulating the bits of the pre-code; a RDS calculator for outputting a RDS value which is obtained by accumulatively summing the disparity of the calculated code word by the unit of blocks for selecting a code word or a complement code word when the computed disparity Dpc is not 0; and a bit manipulator for selecting a nibble-inverted and block-inverted (NIBI) code type in accordance with a control signal from the disparity calculator, manipulating a bit of the inputted pre-code and generating a code word or a complement code word, for thereby providing a transition and a DC spectrum component of 0, using a 1-bit redundancy bit when a predetermined n-bit (n represents odd number) is coded, providing multiple frame patterns, and fully providing an in-band and out-band signal.
    • 一种半字节反转和块反转码编码和解码方法及其编码和解码装置。 该装置包括:视差计算器,用于接收在n比特的源数据的LSB旁边的位置附加了半字节反转指示(NII)比特的预编码(n表示高于3的奇数) ),计算预编码的视差Dpc值,计算奇数比特半字节反相前置码的视差值Dni,根据寄存器的值解码码类型和运行数字和RDS的值 其代表差异码并输出用于操纵前置码的位的控制信号; RDS计算器,用于输出当所计算的视差Dpc不为0时通过用于选择代码字或补码的单元的单元累积求和所计算的代码字的视差获得的RDS值; 以及用于根据来自视差计算器的控制信号选择半字节反转和块反转(NIBI)码类型的位操纵器,操纵输入的预编码的位并产生码字或补码字, 从而提供转换和DC频谱分量为0,当预定的n位(n表示奇数)被编码时,使用1位冗余位,提供多个帧模式,并且完全提供带内和外部 频带信号。
    • 10. 发明授权
    • Blind channel estimation in an orthogonal frequency division multiplexing system
    • 正交频分复用系统盲信道估计
    • US07929620B2
    • 2011-04-19
    • US11634276
    • 2006-12-05
    • Tae Joon KimIk Soo EoHee Bum Jung
    • Tae Joon KimIk Soo EoHee Bum Jung
    • H04L27/28H04J11/00
    • H04L25/0238H04L25/0212H04L25/0248
    • A method for stable channel estimation to increase frequency band efficiency that is lost by using a pilot, and to reduce the complexity and the sensitivity to channel zero. The method includes generating an i-th symbol block Si including N carriers, performing an inverse fast Fourier transform (IFFT) operation on the i-th symbol block, and forming an orthogonal frequency division multiplexing (OFDM) symbol block. The method also includes attaching a guard interval sample in front of the i-th OFDM symbol block Ui and forming at least one OFDM symbol block Ui,cp. The method further includes modeling the formed OFDM symbol block Ui,cp with a channel finite impulse response (FIR) filter and estimating channel impulse response using signals yi received through a channel.
    • 一种用于稳定信道估计的方法,以增加使用导频丢失的频带效率,并降低对信道零的复杂度和灵敏度。 该方法包括生成包括N个载波的第i个符号块Si,对第i个符号块执行快速傅里叶逆变换(IFFT),并形成正交频分复用(OFDM)符号块。 该方法还包括在第i个OFDM符号块Ui的前面附加保护间隔样本并形成至少一个OFDM符号块U 1,c p。 该方法还包括使用信道有限脉冲响应(FIR)滤波器对形成的OFDM符号块Ui,cp进行建模,并且使用通过信道接收的信号y i来估计信道脉冲响应。