专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US07154426B2 Analog-digital converter with advanced scheduling 有权
标题翻译：具有高级调度的模数转换器
公开(公告)号：US07154426B2
公开(公告)日：2006-12-26
申请号：US11052093
申请日：2005-02-08
申请人： Kuniyuki Tani , Atsushi Wada , Shigeto Kobayashi
发明人： Kuniyuki Tani , Atsushi Wada , Shigeto Kobayashi
IPC分类号： H03M1/12
CPC分类号： H03M1/167 , H03M1/162
摘要： A first amplifier circuit samples and holds an input analog signal and outputs the same to a subtracting circuit. An AD converter circuit converts the input analog signal into a digital value so as to retrieve a predetermined number of bits. A DA converter circuit converts the digital value derived from conversion by the AD converter circuit into an analog value. A subtracter circuit subtracts an output analog signal from the DA converter circuit from the analog signal input via a first switch or the first amplifier circuit. A second amplifier circuit amplifies an output analog signal from the subtracter circuit by a gain of 2 and outputs the amplified signal. An input switching circuit controls the order of inputs, i.e. the input analog signal and a reference voltage, to voltage comparison elements constituting the Ad converter circuit.
摘要翻译：第一放大器电路对输入的模拟信号进行采样并保持，并将其输出到减法电路。 AD转换器电路将输入的模拟信号转换为数字值，以便检索预定数量的位。 DA转换器电路将由AD转换器电路的转换得到的数字值转换为模拟值。减法电路经由第一开关或第一放大器电路从DA转换器电路的模拟信号输入中减去输出模拟信号。第二放大器电路将来自减法器电路的输出模拟信号以2的增益放大并输出放大的信号。输入开关电路将输入的顺序，即输入模拟信号和参考电压控制到构成Ad转换器电路的电压比较元件。

12. 发明申请

US20060249659A1 Photodetection apparatus with operation-mode switching 有权
标题翻译：具有操作模式切换的光电检测设备
公开(公告)号：US20060249659A1
公开(公告)日：2006-11-09
申请号：US11390424
申请日：2006-03-28
申请人： Yoh Takano , Atsushi Wada , Kuniyuki Tani
发明人： Yoh Takano , Atsushi Wada , Kuniyuki Tani
IPC分类号： H01J40/14
CPC分类号： H04N5/3745 , H01L27/14643
摘要： A set of voltage output units outputs the light intensity detected by a photodetection device in the form of a voltage value. With the set of voltage output units, the capacitance of the cathode terminal of a photodiode PD provided within the pixel is charged or discharged using the photoelectric current. A current output unit outputs photoelectric current Iph flowing from the photodetection device. The current output unit includes a current output transistor provided between one terminal of the photodetection device and the data line. A pixel circuit effects control of the pixel so as to activate either the set of the voltage output units or the current output unit, thereby outputting either voltage value or photoelectric current to the data line connected to the pixel.
摘要翻译：一组电压输出单元以电压值的形式输出由光检测装置检测的光强度。利用该组电压输出单元，使用光电流对设置在像素内的光电二极管PD的阴极端子的电容进行充电或放电。电流输出单元输出从光检测装置流出的光电流Iph。电流输出单元包括设置在光检测装置的一个端子与数据线之间的电流输出晶体管。像素电路实现像素的控制，以激活电压输出单元或电流输出单元，从而将电压值或光电流输出到连接到像素的数据线。

13. 发明授权

US07095352B2 Analog-to-digital converter including a plurality of amplifier circuits 有权
标题翻译：模数转换器包括多个放大器电路
公开(公告)号：US07095352B2
公开(公告)日：2006-08-22
申请号：US11066498
申请日：2005-02-28
申请人： Kuniyuki Tani , Atsushi Wada , Shigeto Kobayashi
发明人： Kuniyuki Tani , Atsushi Wada , Shigeto Kobayashi
IPC分类号： H03M1/12
CPC分类号： H03M1/08 , H03F3/45183 , H03F3/45475 , H03F2203/45514 , H03F2203/45551 , H03M1/164
摘要： An AD converter includes therein a plurality of amplifier circuits such as first to fourth amplifier circuits. Among the plurality of amplifier circuits an amplifier circuit that requires higher accuracy is placed nearer to a power source. An amplifier circuit that receives the first input of an input analog signal is placed nearest to the power source. That is, the first amplifier circuit in the embodiment is disposed closest to the power source. The amplifier circuit that receives the first input of an input analog signal is disposed closest to the power source compared to the other amplifier circuits. The first amplifier circuit, the second amplifier circuit, the third amplifier circuit and the fourth amplifier circuit in the embodiment are placed in this order of how close to the power source.
摘要翻译： AD转换器包括多个放大器电路，例如第一至第四放大器电路。在多个放大器电路中，需要更高精度的放大器电路被放置得更靠近电源。接收输入模拟信号的第一输入的放大器电路被放置在最靠近电源的位置。也就是说，本实施例中的第一放大器电路设置成最靠近电源。接收输入模拟信号的第一输入的放大器电路与其他放大器电路相比最靠近电源设置。本实施例中的第一放大器电路，第二放大器电路，第三放大器电路和第四放大器电路以与电源接近的顺序放置。

14. 发明申请

US20060033652A1 Current control method and application thereof 有权
标题翻译：电流控制方法及其应用
公开(公告)号：US20060033652A1
公开(公告)日：2006-02-16
申请号：US11212748
申请日：2005-08-29
申请人： Takafumi Nakamori , Atsushi Wada
发明人： Takafumi Nakamori , Atsushi Wada
IPC分类号： H03M1/12
CPC分类号： H03M1/002 , H03M1/167 , H03M1/44
摘要： A current supply circuit supplies a bias current to operational amplifiers which constitute a pipelined AD converter. A current switching circuit switches between output currents in response to a current control signal from current control means, thereby switching between currents to be supplied from a bias circuit to the operational amplifiers via transistors. A sufficiently large current enough for the amplifiers to operate at a high frequency is supplied, while the current is switched to a lower supply current for the amplifier to operate at lower frequencies.
摘要翻译：电流供给电路向构成流水线式AD转换器的运算放大器提供偏置电流。电流切换电路响应于来自电流控制装置的电流控制信号在输出电流之间切换，从而通过晶体管切换从偏置电路提供给运算放大器的电流。提供足以使放大器以高频率工作的足够大的电流，同时将电流切换到较低的电源电流，以使放大器在较低频率下工作。

15. 发明申请

US20050285768A1 DA converter circuit provided with DA converter of segment switched capacitor type 失效
标题翻译： DA转换电路配有片段开关电容型DA转换器
公开(公告)号：US20050285768A1
公开(公告)日：2005-12-29
申请号：US11157923
申请日：2005-06-22
申请人： Hiroyuki Hagiwara , Haruo Kobayashi , Hao San , Atsushi Wada
发明人： Hiroyuki Hagiwara , Haruo Kobayashi , Hao San , Atsushi Wada
IPC分类号： H03M1/06 , H03M1/66 , H03M1/80 , H03M3/00 , H03M3/04
CPC分类号： H03M1/0665 , H03M1/806 , H03M3/43 , H03M3/464
摘要： A DA converter circuit is provided for use in a ΔΣ AD modulator. The DA converter circuit includes a DA converter of segment switched capacitor type. The DA converter includes an operational amplifier, capacitors as connected in parallel to each other to supply electric charges to the operational amplifier, an electrically charging switch for switching of electrically charging electric charges onto the respective capacitors or not, and an electrically discharging switch for switching or not electrically discharging electric charges from the respective capacitors or not. A switch device performs either one of the electrically charging, the electrically discharging, grounding, and polarity inversion onto the respective capacitors. A controller controls the electrically charging switch, the electrically discharging switch and the switch device to execute a process of second-order DWA algorithm for performing a second-order noise shaping of a non-linearity of the DA converter circuit.
摘要翻译：提供了用于DeltaSigma AD调制器的DA转换器电路。 DA转换器电路包括段转换电容器类型的DA转换器。 DA转换器包括运算放大器，彼此并联连接的电容器，以向运算放大器提供电荷，用于将充电电荷转换到各个电容器上的充电开关，以及用于切换的放电开关或不从各个电容器中电荷放电。开关装置对各个电容器进行充电，放电，接地和极性反转之一。控制器控制充电开关，放电开关和开关装置，以执行用于执行DA转换器电路的非线性的二阶噪声整形的二阶DWA算法的处理。

16. 发明申请

US20050219109A1 Technique for comparing analog signal with reference voltage 有权
标题翻译：比较模拟信号与参考电压的技术
公开(公告)号：US20050219109A1
公开(公告)日：2005-10-06
申请号：US11067946
申请日：2005-03-01
申请人： Shigeto Kobayashi , Atsushi Wada
发明人： Shigeto Kobayashi , Atsushi Wada
IPC分类号： H03M1/14 , H03M1/12 , H03M1/16 , H03M1/18
CPC分类号： H03M1/186 , H03M1/167
摘要： The present invention provides a technique for reducing power consumption of an A/D converting device. An A/D converting device according to the present invention includes: multiple comparators each of which has a function for comparing input analog signals with a predetermined reference voltage; an A/D converter for converting the input analog signal into the digital signal with a predetermined number of bits using comparison results from the multiple comparators; a determining unit for determining which range the voltage of the input analog signal belongs to before the comparators comparing the input analog signal with the reference voltages; and a control unit for controlling power supply for the multiple comparators corresponding to the range determined by the determining unit. Thus, power is supplied only to the comparators necessary for this particular A/D conversion, thereby reducing power consumption.
摘要翻译：本发明提供一种用于降低A / D转换装置的功耗的技术。根据本发明的A / D转换装置包括：多个比较器，每个比较器具有将输入模拟信号与预定参考电压进行比较的功能; A / D转换器，用于使用来自多个比较器的比较结果将输入的模拟信号转换成具有预定位数的数字信号; 确定单元，用于在比较器将输入模拟信号与参考电压进行比较之前确定输入模拟信号的电压属于哪个范围; 以及控制单元，用于控制对应于由确定单元确定的范围的多个比较器的电源。因此，仅向该特定A / D转换所需的比较器供电，从而降低功耗。

17. 发明授权

US06947679B2 Image forming apparatus and fixing temperature control method 有权
标题翻译：图像形成装置和定影温度控制方法
公开(公告)号：US06947679B2
公开(公告)日：2005-09-20
申请号：US10649763
申请日：2003-08-28
申请人： Akira Kato , Takeshi Sugita , Atsushi Wada , Tatsubumi Mizuno , Satoshi Nishida
发明人： Akira Kato , Takeshi Sugita , Atsushi Wada , Tatsubumi Mizuno , Satoshi Nishida
IPC分类号： G03G15/16 , G03G15/20
CPC分类号： G03G15/2039 , G03G15/1675 , G03G2215/00734
摘要： An image forming apparatus has sufficient fixing stability and load capacity and being free of sheet jamming and poor image formation. An image forming apparatus includes a transfer voltage applying section for applying a voltage to a transfer section; a transfer current detector for detecting the transfer current flowing through the transfer section; a fixing section for fixing the toner image to fixing position at a predetermined temperature; and a size detector for detecting the size of the recording material. The transfer voltage applying section applies a predetermined transfer voltage, while the recording material passes through the transfer section, so that the transfer current is kept a constant current. When the predetermined transfer voltage is lower than a threshold voltage and the size of the recording material is larger than the predetermined size, the fixing section fixes the toner image at a temperature which is lower than the predetermined temperature.
摘要翻译：图像形成装置具有足够的固定稳定性和负载能力，并且没有纸张堵塞和图像形成不良。图像形成装置包括用于向转印部分施加电压的转印电压施加部分; 转移电流检测器，用于检测流过转印部分的转印电流; 用于将调色剂图像定影在预定温度下的固定位置的固定部分; 以及用于检测记录材料尺寸的尺寸检测器。转印电压施加部分在记录材料通过转印部分时施加预定的转印电压，使得转印电流保持恒定电流。当预定的转印电压低于阈值电压并且记录材料的尺寸大于预定尺寸时，固定部分将调色剂图像固定在低于预定温度的温度下。

18. 发明申请

US20050190095A1 Analog/digital converting device 有权
标题翻译：模/数转换器
公开(公告)号：US20050190095A1
公开(公告)日：2005-09-01
申请号：US11061668
申请日：2005-02-22
申请人： Atsushi Wada , Kuniyuki Tani , Shigeto Kobayashi
发明人： Atsushi Wada , Kuniyuki Tani , Shigeto Kobayashi
IPC分类号： H03M1/12 , H03M1/16 , H03M1/34 , H03M1/40 , H03M1/44
CPC分类号： H03M1/34 , H03M1/162 , H03M1/167 , H03M1/40 , H03M1/44
摘要： The present invention provides a widely general-purpose A/D converting device. The A/D converting device comprises multiple signal conversion units each of which include: an A/D converter for converting an input analog signal into a digital signal with a predetermined number of bits; a D/A converter for converting the output from the A/D converter into an analog signal; a subtracter for subtracting the output signal from the D/A converter, from the input analog signal; and an amplifier for amplifying the output signal from the subtracter. The A/D converting device has a configuration wherein the signal conversion units are arrayed in multiple rows and columns. This allows the user to realize an A/D converting device having various types and levels of performance by making various combinations of the signal conversion units without change of the layout of the signal conversion units.
摘要翻译：本发明提供广泛通用的A / D转换装置。 A / D转换装置包括多个信号转换单元，每个信号转换单元包括：A / D转换器，用于将输入的模拟信号转换成具有预定位数的数字信号; 用于将来自A / D转换器的输出转换为模拟信号的D / A转换器; 用于从输入模拟信号中减去D / A转换器的输出信号的减法器; 以及用于放大来自减法器的输出信号的放大器。 A / D转换装置具有其中信号转换单元以多行和列排列的配置。这允许用户通过进行信号转换单元的各种组合而不改变信号转换单元的布局来实现具有各种类型和级别的性能的A / D转换装置。

19. 发明申请

US20050068220A1 Analog-to-digital converter cyclically repeating AD coversion 有权
标题翻译：模数转换器循环重复AD转换
公开(公告)号：US20050068220A1
公开(公告)日：2005-03-31
申请号：US10950569
申请日：2004-09-28
申请人： Atsushi Wada , Shigeto Kobayashi , Kuniyuki Tani
发明人： Atsushi Wada , Shigeto Kobayashi , Kuniyuki Tani
IPC分类号： H03M1/44 , H03M1/14 , H03M1/16 , H03M1/34 , H03M1/60
CPC分类号： H03M1/167 , H03M1/162
摘要： An AD converter capable of achieving both an improved processing speed and a reduced circuit area in good balance. The AD converter pipelines analog-to-digital conversion by using a two-stage configuration consisting of a first conversion unit, or the prior stage, and a second conversion unit, or the subsequent stage. The first conversion unit is a conversion unit of noncyclic type. The second conversion unit is a conversion unit of cyclic type. The second conversion unit is given a conversion processing speed higher than that of the first conversion unit so that the second conversion unit performs cyclic processing twice while the first conversion unit performs conversion processing once.
摘要翻译： AD转换器能够以良好的平衡实现提高的处理速度和减小的电路面积。 AD转换器通过使用由第一转换单元或前一级以及第二转换单元或后续级组成的两级配置来管线模数转换。第一转换单元是非循环型转换单元。第二转换单元是循环型转换单元。给予第二转换单元的转换处理速度高于第一转换单元的转换处理速度，使得第二转换单元在第一转换单元执行转换处理一次的同时进行两次循环处理。

20. 发明授权

US06859158B2 Analog-digital conversion circuit 有权
标题翻译：模拟数字转换电路
公开(公告)号：US06859158B2
公开(公告)日：2005-02-22
申请号：US10653251
申请日：2003-09-03
申请人： Atsushi Wada , Kuniyuki Tani
发明人： Atsushi Wada , Kuniyuki Tani
IPC分类号： H03M1/44 , H03M1/16 , H03M1/12
CPC分类号： H03M1/167 , H03M1/162
摘要： An operational amplifier, a sub A/D converter, a D/A converter, and an operation amplifier in a first stage circuit operate in response to a clock signal. An operation amplifier, a sub A/D converter, a D/A converter, and an operation amplifier in a second stage circuit operate in response to a clock signal having a frequency three times as high as that of the first clock signal. An analog signal output from the operational amplifier in the first stage is applied to an input node in the second stage circuit through a switch. An analog signal output from an operational amplifier in the second stage circuit is applied to an input node in the second stage circuit through a switch.
摘要翻译：第一级电路中的运算放大器，副A / D转换器，D / A转换器和运算放大器响应于时钟信号而工作。第二级电路中的运算放大器，副A / D转换器，D / A转换器和运算放大器响应于具有第一时钟信号的三倍的频率的时钟信号而工作。从第一级的运算放大器输出的模拟信号通过开关施加到第二级电路中的输入节点。从第二级电路中的运算放大器输出的模拟信号通过开关施加到第二级电路中的输入节点。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式