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1. 发明授权

US5982204A Information-discriminating circuit 失效
标题翻译：信息鉴别电路
公开(公告)号：US5982204A
公开(公告)日：1999-11-09
申请号：US989572
申请日：1997-12-12
申请人： Akihiko Toda , Masao Noro
发明人： Akihiko Toda , Masao Noro
IPC分类号： H03K5/003 , H03K5/08 , H04L25/03 , H04L25/06 , H04L25/49 , H03K5/22
CPC分类号： H04L25/062 , H03K5/003 , H03K5/08
摘要： An information-discriminating circuit has a biasing device that superposes bias voltage on an input signal, and a comparator that discriminates information by comparing an output signal from the biasing device with a threshold value. The difference between the bias voltage and the threshold value is continuously adjusted such that a noise margin is varied according to the amplitude of the input signal.
摘要翻译：信息识别电路具有将偏置电压叠加在输入信号上的偏置装置和通过将来自偏置装置的输出信号与阈值进行比较来鉴别信息的比较器。连续地调整偏置电压和阈值之间的差异，使得噪声容限根据输入信号的幅度而变化。

2. 发明授权

US06724333B1 Digital-to-analog converter 失效
标题翻译：数模转换器
公开(公告)号：US06724333B1
公开(公告)日：2004-04-20
申请号：US10148300
申请日：2003-02-20
申请人： Masao Noro , Akihiko Toda
发明人： Masao Noro , Akihiko Toda
IPC分类号： H03M166
CPC分类号： H03M1/0619 , H03M1/687 , H03M1/745 , H03M1/765
摘要： There is provided a D/A converter that is free from a variation in the voltage width of 1 LSB between more significant bits and less significant bits of data for conversion due to variations in characteristics of resistors, transistors, etc. to thereby ensure a higher conversion accuracy than the conventional D/A converter. The eight more significant bits of 12-bit data for conversion are applied to a decoder 21, while the four less significant bits of the same are applied to a current addition circuit 22. The decoder 21 selects one of FET's F0 to F255 based on the eight more significant bits to cause one of voltages divided by a series circuit formed by resistors r0 to r255 to be applied to an operational amplifier 40. On the other hand, switches 30 to 33 of the current addition circuit 22 are switched, respectively, by the four less significant bits to turn respective FET's 35 to 38 on and off. As a result, currents flowing through turned-on ones of the FET's 35 to 38 are synthesized to flow through the resistor ra so that a voltage is generated across the resistor ra. The operational amplifier 40 synthesizes the two voltages and then outputs the synthesized voltage. An FET 24 and each of the FET's 35 to 38 form a current mirror circuit, whereby the influence of variations in characteristics of the resistors, etc. is eliminated.
摘要翻译：提供了一种D / A转换器，由于电阻器，晶体管等的特性的变化，在更高有效位之间不存在1LSB的电压宽度的变化和用于转换的较低有效位数据，从而确保更高的转换精度比传统的D / A转换器。用于转换的12位数据的八个更高有效位被应用于解码器21，而其相同的四个较低有效位被应用于当前的加法电路22.解码器21基于以下情况选择FET的F0至F255中的一个八个更高有效位使得由电阻r0至r255形成的串联电路分压的一个电压施加到运算放大器40.另一方面，电流相加电路22的开关30至33分别切换为将相应的FET 35打开和关闭的四个较低有效位。结果，流过FET35至38中导通的电流的电流被合成以流过电阻器ra，使得跨过电阻器ra产生电压。运算放大器40合成两个电压，然后输出合成电压。 FET24和FET35至38中的每一个形成电流镜电路，从而消除了电阻器等的变化的影响。

3. 发明申请

US20050007268A1 D/A converter 有权
标题翻译： D / A转换器
公开(公告)号：US20050007268A1
公开(公告)日：2005-01-13
申请号：US10853896
申请日：2004-05-26
申请人： Akihiko Toda
发明人： Akihiko Toda
IPC分类号： H03M1/76 , H03M1/06 , H03M1/68 , H03M1/78
CPC分类号： H03M1/0648 , H03M1/685 , H03M1/765
摘要： A D/A converter formed on a semiconductor substrate includes a plurality of resistance strings which are provided between a low voltage terminal and a high voltage terminal, each of the resistance strings including a plurality of resistances connected in series. The resistance strings to be connected at odd-numbered positions are arranged on the substrate in order of increasing in a direction from a near side of the terminal to which the low voltage is applied to the far side thereof, and the resistance strings to be connected at even-numbered positions are arranged on the substrate in order of increasing in a direction from the far side of the terminal to the near side. A voltage at a junction point of the resistances constituting the resistance string is selectively output in accordance with input data to be converted.
摘要翻译：形成在半导体基板上的D / A转换器包括设置在低电压端子和高电压端子之间的多个电阻串，每个电阻串包括串联连接的多个电阻。要连接在奇数位置的电阻串按照从施加低电压的端子的近侧的方向向远离方向增加的顺序布置在基板上，并且要连接的电阻串在偶数位置上，以从端子的远侧到近侧的方向增加的顺序排列在基板上。根据要转换的输入数据选择性地输出构成电阻串的电阻的接合点处的电压。

4. 发明授权

US06791392B2 Circuit for shifting an input signal level including compensation for supply voltage variation 失效
标题翻译：用于移位输入信号电平的电路，包括电源电压变化的补偿
公开(公告)号：US06791392B2
公开(公告)日：2004-09-14
申请号：US10253787
申请日：2002-09-24
申请人： Toshio Maejima , Akihiko Toda
发明人： Toshio Maejima , Akihiko Toda
IPC分类号： H03L500
CPC分类号： H03K3/35613 , H03K3/012
摘要： A signal level shift circuit is provided for different circuit systems operating based on different supply voltages (VDDL, VDDH), wherein a supply voltage detection circuit detects a reduction of a first supply voltage (VDDL) regarding an input signal (IN). A level shift circuit comprises a load circuit portion consisting of PMOS transistors and a drive circuit portion consisting of NMOS transistors, all of which are connected together to form current paths. A switch circuit arranged for the current paths opens when a reduction is detected in the first supply voltage so that both the NMOS transistors are turned on. Thus, it is possible to effectively avoid occurrence of through currents flowing in the level shift circuit. The level shift circuit is followed by a flip-flop, which provides an output signal (OUT) in conformity with a second supply voltage (VDDH).
摘要翻译：为基于不同电源电压（VDDL，VDDH）工作的不同电路系统提供信号电平移位电路，其中电源电压检测电路检测到关于输入信号（IN）的第一电源电压（VDDL）的减小。电平移位电路包括由PMOS晶体管组成的负载电路部分和由NMOS晶体管组成的驱动电路部分，所有这些都被连接在一起以形成电流路径。当在第一电源电压中检测到减小时，设置用于电流路径的开关电路打开，使得两个NMOS晶体管导通。因此，可以有效地避免在电平移位电路中流过的电流的发生。电平移位电路之后是触发器，触发器提供符合第二电源电压（VDDH）的输出信号（OUT）。

5. 发明授权

US09138146B2 Biological optical measurement instrument and reference image display method 有权
标题翻译：生物光学测量仪器和参考图像显示方法
公开(公告)号：US09138146B2
公开(公告)日：2015-09-22
申请号：US13501815
申请日：2010-10-08
申请人： Michiyo Tanii , Shingo Kawasaki , Michiyuki Fujiwara , Joerg Schnackenberg , Akihiko Toda
发明人： Michiyo Tanii , Shingo Kawasaki , Michiyuki Fujiwara , Joerg Schnackenberg , Akihiko Toda
IPC分类号： A61B6/00 , A61B5/00 , A61B5/02 , A61B5/145
CPC分类号： A61B5/0059 , A61B5/0042 , A61B5/02028 , A61B5/14546 , A61B5/6814 , A61B2562/0233 , A61B2562/046
摘要： The biological optical measurement instrument is provided with a mobile position sensor that can move in a 3-dimensional space and that detects spatial position in the 3-dimensional space, a head-surface image creating unit that creates a head-surface image of an object and a head-surface point creating unit that creates, on the head-surface image, a head-surface point corresponding to the spatial position of the mobile position sensor.
摘要翻译：该生物光学测量仪器设置有能够在三维空间中移动并且检测三维空间中的空间位置的移动位置传感器，产生物体的头部表面图像的头表面图像生成单元以及头表面点生成单元，其在头表面图像上形成与移动位置传感器的空间位置对应的头表面点。

6. 发明授权

US06329551B1 Phenylenediamine derivative, production method thereof and antioxidant for rubber using it as effective constituent 有权
标题翻译：苯二胺衍生物，其制备方法和使用其作为有效成分的橡胶的抗氧化剂
公开(公告)号：US06329551B1
公开(公告)日：2001-12-11
申请号：US09544208
申请日：2000-04-07
申请人： Seiji Nakagome , Akihiko Toda
发明人： Seiji Nakagome , Akihiko Toda
IPC分类号： C07C21100
CPC分类号： C07C255/56 , C07C211/55 , C07C217/80 , C07C225/22 , C08K5/18 , C08L21/00
摘要： A phenylenediamine derivative represented by following formula (I) or (II): wherein R1 and R2 each represents a hydrogen atom, a lower alkyl group, or a lower alkoxy group; R3 represents a hydrogen atom or a methyl group; R4 represents a methyl group or an ethyl group; and n and m each is 1, 2, or 3; wherein R1 and R2 each represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, or a cyano group; and n and m each is 1, 2, or 3, is disclosed. These phenylenediamine derivatives are effectively used as antioxidants for rubbers, which scarcely cause vanishing by evaporation or a thermal denaturation even under a high-temperature condition of 150° C. or higher.
摘要翻译：由下式（I）或（II）表示的苯二胺衍生物：其中R1和R2各自表示氢原子，低级烷基或低级烷氧基; R3表示氢原子或甲基; R4表示甲基或乙基; n和m各自为1,2或3;其中R 1和R 2各自表示氢原子，低级烷基，低级烷氧基或氰基; 并且n和m各自为1,2或3。这些苯二胺衍生物有效地用作橡胶的抗氧化剂，即使在150℃的高温条件下也几乎不会蒸发消失或热变性，或更高。

7. 发明授权

US5894281A Digital-to-analog converter utilizing MOS transistor switching circuit with accompanying dummy gates to set same effective gate capacitance 失效
标题翻译：利用具有伴随的虚拟栅极的MOS晶体管开关电路来设置相同的有效栅极电容的数模转换器
公开(公告)号：US5894281A
公开(公告)日：1999-04-13
申请号：US891121
申请日：1997-07-10
申请人： Akihiko Toda
发明人： Akihiko Toda
IPC分类号： H03M1/78 , H03M1/06 , H03M1/66
CPC分类号： H03M1/0678 , H03M1/785
摘要： A digital-to-analog (D/A) converter provides superior linearity and reduces glitches by setting optimum dimensions for MOS transistors. The D/A converter is configured from a R-2R ladder circuit and a switching circuit. The R-2R ladder circuit consists of series resistors (R) and shunt resistors (2R), which are connected together at respective nodes corresponding to the bit stages. The switching circuit is configured from MOS transistors which are connected between reference potentials and the shunt resistors for each bit stage. The width/length (W/L) ratios of the MOS transistors are set such that the on-resistances of the transistors are sequentially increased by a factor of 2 in bit-stage descending order from the most significant bit (MSB) to the least significant bit (LSB) to maintain the linearity of the R-2R ladder circuit. Dummy gates are provided in parallel to the MOS transistors, except for the MOS transistors which correspond to the MSB, so that the same effective gate capacitance is set for each bit stage to provide uniform switching speed for each stage avoiding the occurrence of glitches.
摘要翻译：数模（D / A）转换器通过设置MOS晶体管的最佳尺寸，提供卓越的线性度并减少毛刺。 D / A转换器由R-2R梯形电路和开关电路构成。 R-2R梯形电路由串联电阻器（R）和分流电阻器（2R）组成，它们分别对应于位级的相应节点连接在一起。开关电路由连接在每个位级的参考电位和分流电阻之间的MOS晶体管构成。 MOS晶体管的宽度/长度（W / L）比被设置为使得晶体管的导通电阻从最高有效位（MSB）到最低有效位（MSB）的比特级顺序依次增加2倍有效位（LSB）来保持R-2R梯形电路的线性。除了对应于MSB的MOS晶体管之外，与MOS晶体管并联设置虚拟栅极，使得针对每个位级设置相同的有效栅极电容，以为每个级提供均匀的开关速度，避免毛刺的发生。

8. 发明授权

US06961014B2 D/A converter 有权
公开(公告)号：US06961014B2
公开(公告)日：2005-11-01
申请号：US10853896
申请日：2004-05-26
申请人： Akihiko Toda
发明人： Akihiko Toda
IPC分类号： H03M1/76 , H03M1/06 , H03M1/68 , H03M1/36
CPC分类号： H03M1/0648 , H03M1/685 , H03M1/765
摘要： A D/A converter formed on a semiconductor substrate includes a plurality of resistance strings which are provided between a low voltage terminal and a high voltage terminal, each of the resistance strings including a plurality of resistances connected in series. The resistance strings to be connected at odd-numbered positions are arranged on the substrate in order of increasing in a direction from a near side of the terminal to which the low voltage is applied to the far side thereof, and the resistance strings to be connected at even-numbered positions are arranged on the substrate in order of increasing in a direction from the far side of the terminal to the near side. A voltage at a junction point of the resistances constituting the resistance string is selectively output in accordance with input data to be converted.

9. 发明授权

US6093853A Phenylenediamine derivative, production method thereof and antioxidant for rubber using it as effective constituent 失效
标题翻译：苯二胺衍生物，其制备方法和使用其作为有效成分的橡胶的抗氧化剂
公开(公告)号：US6093853A
公开(公告)日：2000-07-25
申请号：US106457
申请日：1998-06-30
申请人： Seiji Nakagome , Akihiko Toda
发明人： Seiji Nakagome , Akihiko Toda
IPC分类号： C07C211/55 , C07C217/80 , C07C225/22 , C07C255/56 , C08K5/18 , C07C211/00
CPC分类号： C07C255/56 , C07C211/55 , C07C217/80 , C07C225/22 , C08K5/18
摘要： A phenylenediamine derivative represented by following formula (I) or (II): ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a lower alkyl group, or a lower alkoxy group; R.sub.3 represents a hydrogen atom or a methyl group; R.sub.4 represents a methyl group or an ethyl group; and n and m each is 1, 2, or 3; ##STR2## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, or a cyano group; and n and m each is 1, 2, or 3, is disclosed.These phenylenediamine derivatives are effectively used as antioxidants for rubbers, which scarcely cause vanishing by evaporation or a thermal denaturation even under a high-temperature condition of 150.degree. C. or higher.
摘要翻译：由下式（I）或（II）表示的苯二胺衍生物：其中R1和R2各自表示氢原子，低级烷基或低级烷氧基; R3表示氢原子或甲基; R4表示甲基或乙基; n和m各自为1,2或3; 其中R1和R2各自表示氢原子，低级烷基，低级烷氧基或氰基; 并且n和m各自为1,2或3。这些苯二胺衍生物有效地用作橡胶的抗氧化剂，即使在150℃以上的高温条件下也几乎不会蒸发消失或热变性。

10. 发明授权

US5402127A Digital-to-analog converter 失效
标题翻译：数模转换器
公开(公告)号：US5402127A
公开(公告)日：1995-03-28
申请号：US75141
申请日：1993-06-10
申请人： Akihiko Toda
发明人： Akihiko Toda
IPC分类号： H01C13/02 , H03M1/06 , H03M1/76 , H03M1/78
CPC分类号： H03M1/0646 , H03M1/765
摘要： A digital-to-analog converter (i.e., D/A converter) formed on a wafer comprises a decoder, transistors (e.g., field-effect transistors) and resistors. Since the wafer provides a gap between the p-well region and the n-well region, the resistance values of the resistors formed on the p-well region differ from those of the resistors formed on the n-well region. In order to cancel such difference between the resistance values, there are provided two series of resistors in parallel between a power-applying terminal and a ground terminal, wherein each of two series of resistors contain two kinds of resistors respectively formed on the p-well region and the n-well region, while a midpoint of the first series of resistors is connected with a midpoint of the second series of resistors. Due to the direct connection between two midpoints, the potential applied to these midpoints are stabilized and set at the certain fixed voltage. Thus, it is possible to obtain a desirable precision for the linear digital-to-analog conversion characteristic of the D/A converter, regardless of the difference between the resistance values of the resistors respectively formed on the p-well region and n-well region on the wafer.
摘要翻译：形成在晶片上的数模转换器（即，D / A转换器）包括解码器，晶体管（例如场效应晶体管）和电阻器。由于晶片在p阱区域和n阱区域之间提供间隙，所以形成在p阱区域上的电阻器的电阻值与形成在n-阱区域上的电阻器的电阻值不同。为了消除电阻值之间的差异，在功率施加端子和接地端子之间并联设置两个串联的电阻器，其中两个串联电阻器中的每一个包含分别形成在p阱上的两种电阻器区域和n阱区域，而第一系列电阻器的中点与第二系列电阻器的中点连接。由于两个中点之间的直接连接，施加到这些中点的电位被稳定并设置在一定的固定电压。因此，可以获得D / A转换器的线性数/模转换特性的期望精度，而不管分别形成在p阱区和n阱上的电阻的电阻值之间的差异如何晶圆上的区域。

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