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    • 2. 发明申请
    • CAPACITOR-FREE LOW DROP-OUT REGULATOR
    • 无电容低压降稳压器
    • US20130082672A1
    • 2013-04-04
    • US13348464
    • 2012-01-11
    • Myeung Su KIMJoon Hyung LIMSang Hoon HWANGSang Hyun MINHan Jin CHOTah Joon PARK
    • Myeung Su KIMJoon Hyung LIMSang Hoon HWANGSang Hyun MINHan Jin CHOTah Joon PARK
    • G05F1/10
    • G05F1/575
    • There is provided a low drop-out regulator. The low drop-out regulator includes an amplifier including an odd number of operational amplifiers connected to one another in series, and an output unit including a pass transistor operated by an output from the amplifier and generating an output voltage to be applied to a load, wherein the pass transistor is an N-channel transistor, and the amplifier controls a feedback loop gain between an output terminal of one of the odd number of operational amplifiers and the output unit. The feedback loop gain may be controlled independently from the trans-conductance of the pass transistor, whereby the stable output voltage may be generated, even in the case that the load and the input voltage are changed, and the design parameter may be simplified.
    • 提供了一个低压差调节器。 低压差调节器包括一个包括串联连接的奇数运算放大器的放大器,以及一个输出单元,包括一个由放大器的输出端工作的通过晶体管,并产生一个要加到负载上的输出电压, 其中所述传输晶体管是N沟道晶体管,并且所述放大器控制所述奇数个运算放大器之一的输出端与所述输出单元之间的反馈环路增益。 反馈环路增益可以独立于传输晶体管的跨导电阻来控制,由此即使在改变负载和输入电压的情况下也可以产生稳定的输出电压,并且可以简化设计参数。
    • 4. 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。
    • 5. 发明申请
    • Communication system for data transfer between on-chip circuits
    • 用于片上电路之间数据传输的通信系统
    • US20070162645A1
    • 2007-07-12
    • US11524069
    • 2006-09-20
    • Jin Ho HanHan Jin Cho
    • Jin Ho HanHan Jin Cho
    • G06F13/28
    • G06F13/28
    • Provided is a communication system for improving utilization of on-chip communication architecture and eliminating waiting of a master to use a bus. The communication system includes: a direct memory access controller handling high-capacity data communication among a memory and peripheral devices; a communication switch connected with the direct memory access controller, transferring a header storing information on a location of a passive circuit and a continuous transfer size, and an initial address from an active circuit to the passive circuit, and sending and receiving data to/from the direct memory access controller; and a memory controller sending and receiving the data and the address to/from the direct memory access controller. According to the communication system, a request of an active circuit is not delayed between on-chip circuits, several active circuits can simultaneously transfer data, data communication rate between passive circuits increases, and communication congestion between the passive circuits can be controlled.
    • 提供了一种用于提高片上通信体系结构的利用并消除主机等待使用总线的通信系统。 通信系统包括:直接存储器访问控制器,用于处理存储器和外围设备之间的高容量数据通信; 与直接存储器存取控制器连接的通信开关,将存储有关无源电路的位置的信息和连续的传送大小的报头以及从有源电路的初始地址传送到无源电路,以及发送和接收数据到/从 直接存储器存取控制器; 以及存储器控制器向/从直接存储器存取控制器发送和接收数据和地址。 根据通信系统,有源电路的请求在片上电路之间不被延迟,几个有源电路可以同时传输数据,无源电路之间的数据通信速率增加,并且可以控制无源电路之间的通信拥塞。
    • 6. 发明授权
    • Multiplierless finite impulse response filter
    • 无有限脉冲响应滤波器
    • US06850579B2
    • 2005-02-01
    • US09753258
    • 2000-12-29
    • In-Gi LimIk-Soo EoKyung-Soo KimHan-Jin Cho
    • In-Gi LimIk-Soo EoKyung-Soo KimHan-Jin Cho
    • H03H17/02H03H17/06H03K5/159
    • H03H17/0607H03H17/0226H03H17/0621H03H17/0657
    • A finite impulse response filter of 1:4 interpolation with 108 taps for outputting filter output data of 8 bits with respect to filter input data of 4 bits includes four shifting and storing unit of 27 bits for unifying bits of filter input data of 4 bits, which is 2's complement to shift and store the bi-unified input data, first selection unit for selecting any one of the input data stored in the four shifting and storing unit of 27 bits, address generating unit for generating addresses of lookup tables corresponding to each of a plurality of filter coefficients groups, first to fourth lookup table groups for generating filter outputs of each filter coefficients group, four accumulating unit for shifting the filter outputs of the filter coefficients groups respectively outputted in parallel from the first to the fourth lookup table groups, and second selection unit for serially converting the outputs from each of the four accumulators in accordance with filter coefficients groups.
    • 对于4位的滤波器输入数据,输出8位的8位滤波器输出数据,具有108抽头的1:4内插有限脉冲响应滤波器包括4位的4位移位和存储单元,用于4位滤波器输入数据的位的统一, 其是用于移位和存储双统一输入数据的补码,用于选择存储在27位的四个移位和存储单元中的任何一个输入数据的第一选择单元,用于生成与每个对应的查找表的地址的地址生成单元 多个滤波器系数组的第一至第四查找表组,用于产生每个滤波器系数组的滤波器输出;四个累加单元,用于将由第一至第四查找表组并行输出的滤波器系数组的滤波器输出移位; 以及第二选择单元,用于根据滤波器系数组串行转换四个累加器中的每一个的输出。
    • 8. 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。
    • 9. 发明授权
    • Error detecting circuit in a line length decoding system
    • 线路长度解码系统中的错误检测电路
    • US06201487B1
    • 2001-03-13
    • US09368347
    • 1999-08-05
    • Seong Mo ParkJin Jong ChaHan Jin Cho
    • Seong Mo ParkJin Jong ChaHan Jin Cho
    • H03M740
    • H03M7/46
    • An error detection circuit for detecting errors occurring in a data obtained by decoding a compressed image data block by block in a line length decoding system, includes a first storage device for temporarily storing the run representing the number of zeros (‘0’s) in the compressed image data and an EOB signal externally inputted, a selection signal generator for generating a first and a second selection signal in response to the EOB signal supplied from the first storage device, a first selection circuit for selectively transferring the run supplied by the first storage device or ground signal according to the first selection signal, a second selection circuit for selectively transferring the run supplied by the first storage device or ground signal according to the second selection signal, a reference value generator for generating a reference value based on the output signal of the first selection circuit according to an operation control signal externally inputted, accumulator for accumulating the output of the second selection circuit based on the feedback signal from a second storage device, the second storage device temporarily storing the output of the accumulator, and an error detector for detecting the errors based on the reference value and the output of the second storage device.
    • 一种误差检测电路,用于检测通过在行长解码系统中逐块解码压缩图像数据而获得的数据中发生的错误,包括:第一存储装置,用于临时存储表示压缩的零数量(“0”)的运行 图像数据和外部输入的EOB信号,响应于从第一存储装置提供的EOB信号产生第一和第二选择信号的选择信号发生器,用于选择性地传送由第一存储装置提供的运行的第一选择电路 或接地信号,第二选择电路,用于根据第二选择信号选择性地传送由第一存储装置提供的运行或接地信号;参考值发生器,用于基于第一选择信号的输出信号产生参考值; 第一选择电路根据外部输入的操作控制信号,蓄电池 基于来自第二存储装置的反馈信号累积第二选择电路的输出,第二存储装置临时存储累加器的输出,以及错误检测器,用于基于参考值和第二选择电路的输出检测错误 储存设备。