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    • 1. 发明公开
    • 클록의 자동 켈리브레이션을 이용한 아날로그 디지털 변환기
    • 使用自动校准时钟模拟数字转换器
    • KR1020150052678A
    • 2015-05-14
    • KR1020130134384
    • 2013-11-06
    • 한국과학기술원
    • 류승탁민기정김종인
    • H03M1/12
    • H03M1/0624H03M1/1009H03M1/122H03M1/141H03M2201/62H03M2201/6309H03M2201/718
    • 기설정기울기의램프신호를생성하는램프신호생성부; 복수개의제 1 래치를구비하고, 각제 1 래치는상기아날로그신호에대응되는아날로그입력전압및 각기준전압을입력받고제 1 클록에따라두 전압차이를증폭하여제 1 차동 (+)출력과제 1 차동 (-)출력을출력하는제 1 래치단; 복수개의제 2 래치를구비하고, 하나의제 1 래치의차동출력을각각 (+),(-)입력단으로입력받는제 2 래치및 어느하나의제 1 래치의제 1 차동 (-)출력과상기제 1 래치의기준전압과인접한낮은기준전압을수신하는인접제 1 래치의제 1 차동 (+)출력을각각 (+),(-)단자로입력받는제 2 래치를포함하는제 2 래치단; 입력받은상기램프신호를기준으로복수개의제 2 차동출력신호를동일한길이의복수개구간으로나누고기설정주파수의클록신호를생성하여각 제 2 차동출력이변하는시점사이의간격이일정한지여부를확인하는클록신호확인부; 및상기클록신호확인부에서클록개수확인값을수신하고상기제 1 클록에대비하여상기제 2 클록의지연시간값을반복조절해서상기제 2 클록을생성하는제 2 클록위상변화부를포함하는아날로그디지털변환기를제공한다.
    • 提供了一种模数转换器,包括:斜坡信号产生单元,其产生具有预设等级的斜坡信号; 具有多个第一锁存器的第一锁存端,每个第一锁存器接收对应于模拟信号和每个参考电压的模拟输入电压,并且根据第一时钟放大两个电压之间的差以产生第一差分(+ )输出和第一差分( - )输出; 第二锁存端具有多个第二锁存器,并且包括通过(+)和( - )输入端中的每一个接收一个第一锁存器的差分输出的第二锁存器,以及接收一个第一锁存器的第一锁存器的第一差分输出 通过(+)和( - )端分别接收相邻第一锁存器的第一差分(+)输出,其接收与第一锁存器的参考电压相邻的低参考电压; 时钟信号确认单元,根据输入的斜坡信号将多个第二差分输出信号分成多个具有相同长度的部分,产生具有预设频率的时钟信号,以检查每个第二差分输出端之间的时间点之间的间隙 改变是正常的 以及第二时钟相位改变单元,其从所述时钟信号检查单元接收时钟计数检查值,并通过相对于所述第一时钟重复地调整所述第二时钟的时间延迟值来产生所述第二时钟。
    • 3. 发明公开
    • 전하 차감법을 적용한 디지털 아날로그 변환기
    • 数字到模拟转换器使用电荷分析方法
    • KR1020130052916A
    • 2013-05-23
    • KR1020110118255
    • 2011-11-14
    • 주식회사 실리콘웍스
    • 김지훈손영준나준호배정열
    • H03M1/66
    • H03M1/66H03M2201/61H03M2201/62H03M2201/8152H03M2201/932
    • PURPOSE: A digital analog converter which applies an electric charge subtraction method is provided to minimize errors of capacitors and relatively reduce a size of a decoder. CONSTITUTION: A control signal generating device(340) generates a switch control signal in response to digital data of N bits. A resistance string(310) comprises a first resistor array, a second resistor array, and a third resistor array which respectively divide multiple resistances which are connected between a reference voltage and a grounding voltage in series. A switch block(320) outputs a selection voltage by switching a part of voltage which is applied to any node of multiple serial resistances respectively included in the first resistor array, the second resistor array, and the third resistor array in response to the switch control signal. A conversion voltage generating block(330) generates a conversion voltage in response to a negative phase clock signal which is opposite to a positive phase clock signal.
    • 目的:提供一种应用电荷减法的数字模拟转换器,以最小化电容器的误差并相对减小解码器的尺寸。 构成:响应于N位的数字数据,控制信号产生装置(340)产生开关控制信号。 电阻串(310)包括分别分别连接在参考电压和接地电压之间的多个电阻的第一电阻器阵列,第二电阻器阵列和第三电阻器阵列。 开关块(320)响应于开关控制切换施加到分别包括在第一电阻器阵列,第二电阻器阵列和第三电阻器阵列中的多个串联电阻的任何节点的电压的一部分来输出选择电压 信号。 转换电压产生块(330)响应于与正相位时钟信号相反的负相位时钟信号产生转换电压。
    • 4. 发明授权
    • Dual-slope integrating analog-to-digital converter
    • 双路整合模拟数字转换器
    • KR101143247B1
    • 2012-07-11
    • KR20100138361
    • 2010-12-30
    • CHEONGJU UNIVERSITY INDUSTRY & ACADEMY COOPERA TION FOUNDATION
    • CHA HYEONG WOO
    • H03M1/12
    • H03M1/56H03M1/002H03M1/068H03M2201/192H03M2201/2355H03M2201/32H03M2201/62
    • PURPOSE: A double slope integrating ADC(Analog To Digital Converter) is provided to minimize a chip area by forming a switch control logic circuit part with a MCU(Micro Control Unit) and a single chip by using a standard CMOS(Complementary Metal Oxide Semiconductor) process. CONSTITUTION: An LOTA(Linear Operational Transconductance Amplifier) outputs a current by being applied with an analog input voltage and a reference voltage. First resistance applies the analog input voltage to an (+) input terminal in the LOTA. A first switch applies the analog input voltage to the first resistance according to a control signal. Second resistance applies the reference voltage to a (-) input terminal in the LOTA. The second switch applies the reference voltage to the second resistance according to the control signal. A capacitor outputs a voltage by charging an output current in the LOTA. A third switch initializes the output current in the LOTA and the voltage charged in the capacitor. A comparator outputs two constant voltages. A switch control logic circuit outputs the control signal controlling the operation of first, second, and third switches.
    • 目的:提供集成ADC(模数转换器)的双斜率,通过使用标准CMOS(互补金属氧化物半导体)(MCU)与MCU(微控制单元)和单芯片形成开关控制逻辑电路部件来最小化芯片面积 )过程。 构成:LOTA(线性运算跨导放大器)通过施加模拟输入电压和参考电压来输出电流。 第一个电阻将模拟输入电压施加到LOTA中的(+)输入端。 第一开关根据控制信号将模拟输入电压施加到第一电阻。 第二个电阻将参考电压施加到LOTA中的( - )输入端。 第二开关根据控制信号将参考电压施加到第二电阻。 电容器通过对LOTA中的输出电流充电来输出电压。 第三个开关初始化LOTA中的输出电流和电容中充电的电压。 比较器输出两个恒定电压。 开关控制逻辑电路输出控制第一,第二和第三开关的操作的控制信号。
    • 5. 发明公开
    • Switched-capacitor cyclic digital to analog converter with capacitor mismatch compensation
    • 开关电容循环数字到具有电容器误差补偿的模拟转换器
    • KR20120021021A
    • 2012-03-08
    • KR20100085037
    • 2010-08-31
    • UNIV SOGANG IND UNIV COOP FOUN
    • LEE YONG MINLEE KYE SHIN
    • H03M1/66
    • H03M1/1023H03M1/66H03M2201/62H03M2201/63H03M2201/8152
    • PURPOSE: A digital to analog converter for revising mismatch between capacitors is provided to reduce error possibility in a display output by revising errors due to mismatch between capacitors. CONSTITUTION: A DAC(Digital To Analog Converter) is composed of three capacitors(C1,C2,C3) with the same capacity as one operational amplifier(10) and switches(S1-S9). The operational amplifier includes a first input terminal, a second input terminal, and an output terminal. The second input terminal is connected to a ground terminal. A second capacitor and a third capacitor are used to revise mismatch between capacitors. The first capacitor, the second capacitor, the third capacitor, and the operational amplifier are differently connected for sampling and mismatch correction according to a turn on and off operation of the switch.
    • 目的:提供用于修改电容器之间不匹配的数模转换器,通过修改由于电容器之间的不匹配造成的误差,可以减少显示输出中的错误可能性。 构成:DAC(数模转换器)由三个电容(C1,C2,C3)组成,与一个运算放大器(10)和开关(S1-S9)的容量相同。 运算放大器包括第一输入端,第二输入端和输出端。 第二输入端子连接到接地端子。 使用第二电容器和第三电容器来修正电容器之间的失配。 根据开关的接通和断开操作,第一电容器,第二电容器,第三电容器和运算放大器被不同地连接用于采样和不匹配校正。
    • 7. 发明公开
    • 저항열을 이용한 디지털-아날로그 변환기
    • 使用电阻器的数字模拟转换器
    • KR1020110077348A
    • 2011-07-07
    • KR1020090133898
    • 2009-12-30
    • 충북대학교 산학협력단
    • 양병도
    • H03M1/66
    • H03M1/66H03M1/002H03M2201/16H03M2201/62H03M2201/932
    • PURPOSE: A digital to analog converter is provided to reduce a circuit space and improve an operation speed by reducing the number of resistance, switches, and decoders. CONSTITUTION: A first resistance string(222) generates an analog signal corresponding to the input of a MSB(Most Significant Bit). A second resistance string(232) generates an analog signal corresponding to the input of a LSB(Least Significant Bit). A reference current generating unit applies a bias current to the first and the second resistance string. An output buffer(240) outputs an analog signal corresponding to the voltage generated in the first and the second resistance string.
    • 目的:提供数模转换器,通过减少电阻,开关和解码器的数量来减少电路空间并提高运行速度。 构成:第一电阻串(222)产生对应于MSB(最高有效位)的输入的模拟信号。 第二电阻串(232)产生对应于LSB(最低有效位)的输入的模拟信号。 参考电流产生单元向第一和第二电阻串施加偏置电流。 输出缓冲器(240)输出对应于在第一和第二电阻串中产生的电压的模拟信号。
    • 8. 发明公开
    • 기준전류전달장치
    • 提供参考电流的装置
    • KR1020100119409A
    • 2010-11-09
    • KR1020090038511
    • 2009-04-30
    • 주식회사 실리콘웍스
    • 김기덕조규형전용준전진용정승철이성우
    • H03M1/66H03M1/12
    • H03M1/66H03M2201/61H03M2201/62H03M2201/711H03M2201/814H03M2201/932
    • PURPOSE: An apparatus for transferring a reference current is provided to reduce the size of an entire circuit by accurately sampling or holding the reference current regardless of the generation of mismatches in processes. CONSTITUTION: A first switch part(10) includes a first n-type metal oxide semiconductor(NMOS) transistor(11), a second NMOS transistor(13), and a third NMOS transistor(15). The first switch part transfers a reference current from reference current source(Ireft) according to a controlling signal. A sampling or holding part(20) includes a first current storing part(Cn) and a fourth NMOS transistor(21). The sampling or holding part samples or holds the reference current for a pre-set time. A second switch part(30) includes a first inverter(31) and a fifth NMOS transistor(33).
    • 目的:提供用于传送参考电流的装置,以便通过精确地采样或保持参考电流来减小整个电路的尺寸,而不管工艺中产生不匹配。 构成:第一开关部件(10)包括第一n型金属氧化物半导体(NMOS)晶体管(11),第二NMOS晶体管(13)和第三NMOS晶体管(15)。 第一开关部分根据控制信号从参考电流源(Ireft)传送参考电流。 采样或保持部分(20)包括第一电流存储部分(Cn)和第四NMOS晶体管(21)。 采样或保持部分采样或保持参考电流达预设时间。 第二开关部分(30)包括第一反相器(31)和第五NMOS晶体管(33)。
    • 10. 发明公开
    • 소형 티에프티 구동 드라이버 아이시 제품의디지털-아날로그 컨버터
    • 小尺寸TFT驱动器IC的DAC
    • KR1020070070992A
    • 2007-07-04
    • KR1020050134090
    • 2005-12-29
    • 매그나칩 반도체 유한회사
    • 권종혁
    • H03M1/66G09G3/36
    • H03M1/662G09G3/36H03M2201/62H03M2201/814H03M2201/932
    • A DAC of a small-sized TFT(Thin Film Transistor) driver IC is provided to reduce a overall size by decreasing a size of a DAC component corresponding to a single channel. A DAC(Digital to Analog Converter) driving circuit for a small-sized display device includes first to third switching elements. The first switching element includes PMOS(Positive Metal Oxide Semiconductor) and NMOS transistors, which are selectively switched by plural first input voltages. The second switching element includes one of the PMOS and NMOS(Negative Metal Oxide Semiconductor) transistors, so that plural second input voltages are selectively switched. The third switching element includes the PMOS and NMOS transistors and selectively switches plural third input voltages.
    • 提供小尺寸TFT(薄膜晶体管)驱动器IC的DAC,通过减小对应于单个通道的DAC组件的尺寸来减小总体尺寸。 用于小尺寸显示装置的DAC(数模转换器)驱动电路包括第一至第三开关元件。 第一开关元件包括由多个第一输入电压选择性地切换的PMOS(正金属氧化物半导体)和NMOS晶体管。 第二开关元件包括PMOS和NMOS(负金属氧化物半导体)晶体管之一,从而选择性地切换多个第二输入电压。 第三开关元件包括PMOS和NMOS晶体管,并选择性地切换多个第三输入电压。