公开(公告)号：US07053810B2

公开(公告)日：2006-05-30

申请号：US11151551

申请日：2005-06-14

申请人： Hisashi Harada ,  Takahiro Miki ,  Hideo Matsui

发明人： Hisashi Harada ,  Takahiro Miki ,  Hideo Matsui

IPC分类号： H03M1/34

CPC分类号： H03M1/1225 ,  H03M1/46

摘要： A successive approximation A/D converter includes first and second S/H and comparators sampling and holding first and second external analog input voltages simultaneously and comparing the held, first and second external analog input voltages with a reference voltage to output first and second signals having levels corresponding to resultant comparisons, and a reference voltage generator operative in response to the first and second signals to generate the reference voltage. The two S/H and comparators share the single reference voltage generator. A reduced chip area can be achieved.

摘要翻译： 逐次逼近A / D转换器包括第一和第二S / H，并且比较器同时采样并保持第一和第二外部模拟输入电压，并将保持的，第一和第二外部模拟输入电压与参考电压进行比较，以输出具有 对应于所得到的比较的电平，以及响应于第一和第二信号而工作以产生参考电压的参考电压发生器。 两个S / H和比较器共享单个参考电压发生器。 可以实现减少的芯片面积。

公开(公告)号：US20060044169A1

公开(公告)日：2006-03-02

申请号：US11214723

申请日：2005-08-31

申请人： Osamu Matsumoto ,  Takahiro Miki ,  Yasuo Morimoto

发明人： Osamu Matsumoto ,  Takahiro Miki ,  Yasuo Morimoto

IPC分类号： H03M1/66

CPC分类号： H03M1/0604 ,  H03M1/742

摘要： A current driven D/A converter sets an OFF control voltage (BIAS3) for turning off NMOS transistors M12P, M12N, M22P, M22N, M32P and M32N at a voltage close to an ON control voltage (BIAS2). This makes it possible to reduce the swing of the control voltage (ON control voltage—OFF control voltage) of the NMOS transistors, and hence to reduce the noise due to charge injections through parasitic capacitances, and noise of a ground voltage or power supply voltage due to flowing of discharge currents from the parasitic capacitances to the ground or power supply at turn off of the transistors, thereby being able to offer a high performance current driven D/A converter.

摘要翻译： 电流驱动D / A转换器设置用于在接近ON控制电压（BIAS2）的电压下关断NMOS晶体管M12P，M12N，M22P，M22N，M32P和M32N的OFF控制电压（BIAS3）。 这使得可以减小NMOS晶体管的控制电压（ON控制电压 - 关闭控制电压）的摆动，从而减少由于通过寄生电容的电荷注入引起的噪声，以及接地电压或电源电压的噪声 由于在晶体管截止时由寄生电容放电到地或电源的放电电流的流动，从而能够提供高性能的电流驱动D / A转换器。

公开(公告)号：US06472930B1

公开(公告)日：2002-10-29

申请号：US09177503

申请日：1998-10-23

申请人： Yasuo Morimoto ,  Hiroyuki Kono ,  Takahiro Miki

发明人： Yasuo Morimoto ,  Hiroyuki Kono ,  Takahiro Miki

IPC分类号： G05F110

CPC分类号： G05F3/24

摘要： A current generator (CG) is composed of a constant-current-source transistor M1, and transistors (M2, M3). On receipt of control signals (VG2, VG3) respectively from a driver circuit (not shown), the transistors (M2, M3) complementarily operate to function as current switches. Then, damping resistance (R3) is provided between the drain electrode of the transistor (M3) and an output terminal ({overscore (IT)}). The output terminal ({overscore (IT)}) is connected to a ground (GND), while an output terminal (IT) is grounded via an external terminal (R2). Such a structure allows a semiconductor integrated circuit device to reduce its output ringing and further to suppress imperfections resulting from the adoption of the structure to reduce the ringing.

摘要翻译： 电流发生器（CG）由恒流源晶体管M1和晶体管（M2，M3）组成。 分别从驱动电路（未示出）接收到控制信号（VG2，VG3）时，晶体管（M2，M3）互补地工作，起到电流开关的作用。 然后，在晶体管（M3）的漏电极和输出端（{overscore（IT）}之间设置阻尼电阻（R3）。 输出端子（{overscore（IT）}）连接到地（GND），而输出端（IT）通过外部端子（R2）接地。 这种结构允许半导体集成电路器件减少其输出振铃并且进一步抑制由采用该结构导致的减少振铃的缺陷。

公开(公告)号：US06388502B2

公开(公告)日：2002-05-14

申请号：US09756215

申请日：2001-01-09

申请人： Kazuo Kaneki ,  Takahiro Miki

发明人： Kazuo Kaneki ,  Takahiro Miki

IPC分类号： G06F744

CPC分类号： H03F3/45089 ,  H03D7/1433 ,  H03D7/1458 ,  H03D2200/0088 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45631 ,  H03F2203/45702 ,  H03F2203/45722

摘要： An output signal gain is improved by a semiconductor integrated circuit comprising a mixer circuit having an upper-stage transistor circuit to which a local signal is inputted and a lower-stage transistor circuit to which an RF signal is inputted, wherein a first resistance and a second resistance serving as a load are connected between the upper-stage transistor circuit and supply voltage, and a result of multiplication operation performed via the upper-stage transistor circuit and the lower-stage transistor circuit is made to appear as a first signal and a second signal at the first resistance and the second resistance respectively on the basis of the supply voltage; an emitter follower circuit including a first transistor and a second transistor for respectively receiving outputs from the first resistance and the second resistance and outputting a first amplified signal and a second amplified signal that have been subjected to impedance conversion on the basis of the supply voltage; and an operational amplifier circuit for receiving the first amplified signal on an inverting input side via an input resistance and the second amplified signal on a non-inverting input side, the operational amplifier circuit including a feedback resistance for connecting its output side and the inverting input side provided with the input resistance.

摘要翻译： 输出信号增益由包括具有输入本地信号的上级晶体管电路的混频器电路和输入RF信号的下级晶体管电路的半导体集成电路改进，其中第一电阻和 作为负载的第二电阻连接在上级晶体管电路和电源电压之间，并且经由上级晶体管电路和下级晶体管电路执行的乘法运算的结果作为第一信号和 第二电阻和第二电阻分别基于电源电压; 射极跟随器电路，包括第一晶体管和第二晶体管，用于分别从第一电阻和第二电阻接收输出，并输出基于电源电压进行阻抗转换的第一放大信号和第二放大信号; 以及运算放大器电路，用于经由输入电阻在反相输入侧接收第一放大信号，并且在非反相输入侧接收第二放大信号，运算放大器电路包括用于连接其输出侧和反相输入端的反馈电阻 一侧设有输入电阻。

公开(公告)号：US06380881B2

公开(公告)日：2002-04-30

申请号：US09757462

申请日：2001-01-11

申请人： Hisashi Harada ,  Takahiro Miki

发明人： Hisashi Harada ,  Takahiro Miki

IPC分类号： H03M106

CPC分类号： H03M1/0695 ,  H03M1/46

摘要： A successive approximation A/D converter includes a comparator formed of a plurality of comparators and comparing an analog input voltage with a plurality of voltages output from a digital-to-analog converter so as to output a conversion result including at least 2 bits. A control circuit in the A/D converter performs error correction based on the final result output from the comparator and outputs a final conversion result to a conversion result output terminal.

摘要翻译： 逐次逼近A / D转换器包括由多个比较器形成的比较器，并将模拟输入电压与从数模转换器输出的多个电压进行比较，以便输出包括至少2位的转换结果。 A / D转换器中的控制电路根据比较器的最终结果输出执行纠错，并向转换结果输出端输出最终转换结果。

公开(公告)号：US5327135A

公开(公告)日：1994-07-05

申请号：US12406

申请日：1993-02-02

申请人： Shiro Hosotani ,  Takahiro Miki

发明人： Shiro Hosotani ,  Takahiro Miki

IPC分类号： H03M1/14 ,  H03M1/36

CPC分类号： H03M1/148 ,  H03M1/365

摘要： Low-order reference potentials including high-order reference potentials (VRT, VRB, VC0 to VC6) generated from a ladder resistor and potentials (V(i, j) (i=0 to 7, j=0 to 6)) are applied to potential lines, respectively, to be transmitted by various switches to analog bus lines (FR0a to FR14a) or analog bus lines (FR0b FR14b). The low-order reference potentials are applied to the analog bus lines (FR0b to FR14b) when it is judged that a sample signal potential falls in voltage zones (Z0 to Z3) as a result of comparison with the high-order reference potentials and are applied to the analog bus lines (FR0a to FR14a) when it is judged that the sample signal potential falls in voltage zones (Z4 to Z7). This provides for reduction in the number of switches connected to each analog bus line and in parasitic capacitance, so that a settling time of the low-order reference potentials is shortened. High-speed operation of a series-parallel A-D converter is achieved.

摘要翻译： 应用梯形电阻产生的高阶参考电位（VRT，VRB，VC0〜VC6）和电位（V（i，j）（i = 0〜7，j = 0〜6））的低阶参考电位 分别由各种开关传输到模拟总线（FR0a至FR14a）或模拟总线（FR0b FR14b）的电位线。 作为与高阶参考电位进行比较的结果，当判断为采样信号电位落在电压区（Z0〜Z3））时，将低阶参考电位施加到模拟总线（FR0b〜FR14b），分别为 当判断为采样信号电位落在电压区域（Z4〜Z7）时，施加到模拟总线（FR0a〜FR14a）。 这提供了减少连接到每个模拟总线线路和寄生电容的开关的数量，使得低阶参考电位的建立时间缩短。 实现串并联A-D转换器的高速运行。

公开(公告)号：US5160930A

公开(公告)日：1992-11-03

申请号：US665856

申请日：1991-03-07

申请人： Shiro Hosotani ,  Takahiro Miki

发明人： Shiro Hosotani ,  Takahiro Miki

IPC分类号： H03M1/36 ,  H03M1/74

CPC分类号： H03M1/362

摘要： A reference voltage generating circuit is disclosed which generates a plurality of linear analog voltages and is desirably applied to A/D and D/A converters. As the reference voltage generating circuit itself or a resistor network comprised therein, a resistor network is employed which comprises a plurality of resistor elements connected in series between two power sources and resistor networks (or resistor elements) connected to all the other nodes than the two nodes closest to the two power sources, respectively, out of the nodes between the former resistor elements. The above-mentioned plurality of resistor elements have the same resistance value r and the output impedance (or resistance value) of the resistor networks (or resistor elements) connected to all the nodes above is set to a value twice the resistance value r of the above-mentioned resistor elements, or 2r. Accordingly, output impedance at any of the nodes between said plurality of resistor elements represents 2.multidot.r/3. A a result, inequality of output impedances between the output terminals of the reference voltage generating circuit can be improved.

摘要翻译： 公开了一种产生多个线性模拟电压的参考电压产生电路，并期望地应用于A / D和D / A转换器。 作为参考电压产生电路本身或其中包含的电阻网络，采用电阻网络，其包括串联连接在两个电源和电阻器网络（或电阻器元件）之间的多个电阻元件，所述电阻器网络连接到除了两个 最靠近两个电源的节点分别位于前一个电阻元件之间的节点之间。 上述多个电阻元件具有相同的电阻值r，并且连接到上述所有节点的电阻器网络（或电阻元件）的输出阻抗（或电阻值）被设置为两倍于 上述电阻元件，或2r。 因此，所述多个电阻元件之间的任何节点处的输出阻抗表示2×r / 3。 结果，可以提高参考电压产生电路的输出端子之间的输出阻抗的不等式。

公开(公告)号：US4958157A

公开(公告)日：1990-09-18

申请号：US310112

申请日：1989-02-14

申请人： Takahiro Miki ,  Shiro Hosotani

发明人： Takahiro Miki ,  Shiro Hosotani

IPC分类号： H03M7/00 ,  H03M1/36 ,  H03M7/08 ,  H03M7/20

CPC分类号： H03M7/20

摘要： An encoder circuit is disclosed wherein a plurality of input signals are parallel-supplied directly to the gates of transistor pairs. Each transistor pair comprises at least two series-connected transistors which are provided between an associated one of output lines and a source of a predetermined potential level (a supply potential or groud potential). The encoding function of the circuit is performed by turning on and off the transistors.

摘要翻译： 公开了一种编码器电路，其中多个输入信号被并行地提供给晶体管对的栅极。 每个晶体管对包括至少两个串联连接的晶体管，其被提供在相关联的一个输出线和预定电位电平（电源电位或电位）之间。 通过接通和关断晶体管来执行电路的编码功能。

公开(公告)号：US08278788B2

公开(公告)日：2012-10-02

申请号：US13057875

申请日：2010-03-31

申请人： Koji Hayashi ,  Makoto Tomita ,  Shinichi Kojima ,  Ryuichi Hasegawa ,  Takahiro Miki

发明人： Koji Hayashi ,  Makoto Tomita ,  Shinichi Kojima ,  Ryuichi Hasegawa ,  Takahiro Miki

IPC分类号： H02K9/00

摘要： A heat-generating portion cooling structure of vehicle drive apparatus that sufficiently supplies cooling oil to heat-generating portions to enhance efficiency of the vehicle drive apparatus when the heat-generating portions generate maximum heat includes drawing means for drawing oil in a case into a catch tank, and an oil circulation passage for circulating the oil through the catch tank while supplying the oil to first and second heat-generating portions. The oil circulation passage includes a first passage for the oil to flow to the first heat-generating portion when the oil surface in the catch tank is at a first height and a second passage for the oil to flow to the second heat-generating portion when the oil surface is at a second height lower than the first height, and more amount of oil flows to the second heat-generating portion than to the first heat-generating portion when the oil surface is low.

公开(公告)号：US07499819B2

公开(公告)日：2009-03-03

申请号：US11698074

申请日：2007-01-26

申请人： Atsushi Kanke ,  Takahiro Miki ,  Kelji Hanzawa

发明人： Atsushi Kanke ,  Takahiro Miki ,  Kelji Hanzawa

IPC分类号： G01F1/12 ,  G01F1/50 ,  G01F25/00

CPC分类号： G01F1/698 ,  G01F1/6965

摘要： A flow measuring device has a sensor element for outputting a nonlinear signal according to a flow rate. In the device, a first signal processing system obtains a first signal by filtering the nonlinear signal output from the sensor element, thereafter corrects a sensitivity of the filtered signal. A second signal processing system obtains a second signal by linearizing the nonlinear signal from the sensor element, thereafter filters the linearized signal and corrects a sensitivity of the filtered signal, and then non-linearizes the linearized signal with a corrected sensitivity. An amplifier amplifies a differential signal between the first and second signals. A correcting section corrects the nonlinear signal by using the amplified differential signal.

摘要翻译： 流量测量装置具有用于根据流量输出非线性信号的传感器元件。 在该装置中，第一信号处理系统通过对从传感器元件输出的非线性信号进行滤波来获得第一信号，然后校正滤波信号的灵敏度。 第二信号处理系统通过线性化来自传感器元件的非线性信号获得第二信号，然后对线性化信号进行滤波，并校正滤波信号的灵敏度，然后以校正的灵敏度对线性化信号进行非线性化。 放大器放大第一和第二信号之间的差分信号。 校正部分通过使用放大的差分信号校正非线性信号。