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公开(公告)号：US20240356445A1
公开(公告)日：2024-10-24
申请号：US18762569
申请日：2024-07-02
申请人： MaxLinear, Inc.
CPC分类号： H02M3/1584 , H02M3/156 , H02M3/1586 , H03M1/143
摘要： Methods and systems for ripple suppression in multi-phase buck converters may comprise a buck converter for providing an output voltage with controlled ripple current. The buck converter may include one or more main buck converter stages and one or more suppression buck converter stages coupled with the one or more main buck converter stages. The one or more suppression buck converter stages may provide suppression currents to reduce ripple currents generated in the one or main buck converter stages.
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公开(公告)号：US20130112859A1
公开(公告)日：2013-05-09
申请号：US13291905
申请日：2011-11-08
申请人： Jamie Shaffer
发明人： Jamie Shaffer
IPC分类号： G01D5/347
CPC分类号： G01D5/34715 , H03M1/143 , H03M1/245 , H03M1/301
摘要： An optical readhead for measuring a displacement along a measuring axis direction between the readhead and a scale track comprises an illumination portion configured to output source light to the scale track and a monolithic detector configuration. The monolithic detector configuration comprises: a first track photodetector portion configured to receive scale light from the scale track; a first metal layer; a second metal layer; and a plurality of dummy vias between the first metal layer and the second metal layer. The plurality of dummy vias is arranged to block light transmission along a layer between the first and second metal layers, and the plurality of dummy vias is formed by the same process steps used to fabricate a plurality of active vias used to connect circuit elements on the monolithic detector configuration.
摘要翻译： 用于测量沿读取头和刻度轨道之间的测量轴线方向的位移的光学读取头包括被配置为将光源输出到刻度轨道的照明部分和单片检测器配置。 单片检测器配置包括：第一轨道光电检测器部分，被配置为从标尺轨道接收标度光; 第一金属层; 第二金属层; 以及在第一金属层和第二金属层之间的多个虚拟通路。 多个虚拟通孔被布置成阻挡沿着第一和第二金属层之间的层的光传输，并且多个虚拟通孔由用于制造用于连接电路元件上的多个活动通孔的相同工艺步骤形成 单片检测器配置。
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公开(公告)号：US5013988A
公开(公告)日：1991-05-07
申请号：US382784
申请日：1989-06-23
申请人： Tetsuro Sakano
发明人： Tetsuro Sakano
CPC分类号： G01D5/2455 , G01D5/2497 , H03M1/143 , G05B2219/37263 , H03M1/26 , H03M1/30
摘要： An absolute position encoder outputs position data as absolute data. When a power supply is turned on, absolute position data is read from an absolute code pattern (6) and is set in a counter (14). Thereafter, the counter (14) effects counting of incremental pulses read from an incremental code pattern (7) and increments the contents of the counter (14). Accurate absolute data referenced upon startup to the absolute code pattern can thus be output even during a high speed rotation.
摘要翻译： PCT No.PCT / JP88 / 01061 Sec。 371日期1989年6月23日第 102（e）日期1989年6月23日PCT提交1988年10月18日PCT公布。 出版物WO89 / 03976 日期：1989年5月5日。绝对位置编码器将位置数据作为绝对数据输出。 当电源接通时，从绝对代码模式（6）读取绝对位置数据，并将其设置在计数器（14）中。 此后，计数器（14）对从增量代码模式（7）读取的增量脉冲进行计数并增加计数器（14）的内容。 因此，即使在高速旋转期间，也可以输出在启动到绝对代码模式时所参考的精确绝对数据。
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公开(公告)号：US5012673A
公开(公告)日：1991-05-07
申请号：US176087
申请日：1988-04-01
申请人： Yoshiya Takano , Yoshikazu Hoshi
发明人： Yoshiya Takano , Yoshikazu Hoshi
CPC分类号： H03M1/143 , G01D5/2455 , H03M1/285 , H03M1/30
摘要： A measurement range is divided into a plurality of sections, a binary coded signal is generated at each division point, small section signals are generated at a predetermined interval between the binary coded signals, the binary coded signals are weighted by angles, and the small section signals are added or subtracted to or from the weighted signal to interpolate between two binary coded signals. Since the increment signals generated between the adjacent absolute signals is used as an interpolation signal between the absolute signals, the measurement accuracy is enhanced without increasing the number of elements for generating the absolute signals. The measured angle can be accurately read by adding or subtracting the increment signals to and from the weighted signal of the absolute signal.
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公开(公告)号：US4621256A
公开(公告)日：1986-11-04
申请号：US775983
申请日：1985-09-13
申请人： Stanley J. Rusk
发明人： Stanley J. Rusk
摘要： A shaft angle encoder comprises a code disc (21) mountable coaxially upon a rotary shaft (20) whose angular position is to be continuously measured. Coarse-bit angular position data are encoded digitally in Gray code by a pattern of opaque and transparent sectors provided on a plurality of inner annular tracks on the code disc (21). Fine-bit angular position data are encoded in analog triangular waveforms generated by the outermost annular track on the code disc (21). The analog position data are converted to fine-bit digital values, which are combined with coarse-bit digital values to obtain an angular position measurement. Alignment of the fine-bit digital values with the coarse-bit digital values obtained from the Gray code position data is accomplished by using information provided by overlapping the least significant bit of the coarse-bit digital values with the most significant bit of the fine-code digital values.
摘要翻译： 轴角编码器包括同轴安装在旋转轴（20）上的代码盘（21），所述旋转轴（20）的角度位置将被连续测量。 粗位角度位置数据通过设置在代码盘（21）上的多个内环形轨道上的不透明和透明扇区的图案以格雷码数字编码。 微位角位置数据以由代码盘（21）上的最外环形轨迹生成的模拟三角波形编码。 模拟位置数据被转换为精细位数字值，它们与粗位数字值组合以获得角位置测量。 通过使用通过将粗位数字值的最低有效位与精细位数字值的最高有效位重叠而提供的信息来实现精细位数字值与从格雷码位置数据获得的粗位数字值的对准， 代码数字值。
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公开(公告)号：US3315253A
公开(公告)日：1967-04-18
申请号：US37787264
申请日：1964-06-25
申请人： INDUCTOSYN CORP
发明人： GELIER ROBERT Z
摘要： 1,103,219. Analogue-digital converters. INDUCTOSYN Ltd. 17 June, 1965 [25 June, 1964], No. 25657/65. Heading G4H. The angular displacement of a shaft 43 (Fig. 1A) is digitized by means of movable transformer elements rotating with the shaft. a resolver measuring the coarse position and an " Inductosyn " (Registered Trade Mark) measuring the fine position. The phase modulated sine wave output from the Inductosyn is applied to a zero cross detector 52 to give a time differentiated output pulse to inhibit a fine gate 56 from counting clock pulses. The output from the fine gate is fed to a fine counter 65. In a similar way the output from the resolver 22 is applied to a zero cross detector 53 to inhibit the gate 57, through which pulses from a coarse clock have been sent to a coarse counter 66. The outputs from the counters may be used to illuminate a display 81. In addition the output from the fine counter is applied to a digital to analogue converter 74 the output from which is used to bias the coarse zero crossing detector 53 to retard the advance of the coarse stop pulse until the Inductosyn cycle is completed.
摘要翻译： 1,103,219。 模拟数字转换器。 INDUCTOSYN有限公司1965年6月17日[1964年6月25日]，第25657/65号。 标题G4H。 轴43（图1A）的角位移通过与轴一起旋转的可移动变压器元件进行数字化。 测量粗略位置的旋转变压器和测量精细位置的“Inductosyn”（注册商标）。 将来自Inductosyn的相位调制正弦波输出施加到零交叉检测器52，以给出时间微分输出脉冲，以阻止精细门56对时钟脉冲进行计数。 来自精细栅极的输出被馈送到精细计数器65.以类似的方式，来自分解器22的输出被施加到零交叉检测器53，以阻止门57，来自粗略时钟的脉冲通过该门被发送到 粗计数器66.来自计数器的输出可以用于照亮显示器81.另外，来自精细计数器的输出被施加到数模转换器74，数字模拟转换器74的输出用于将粗过零检测器53偏置到 延迟粗略停止脉冲的进行，直到Inductosyn循环完成。
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公开(公告)号：US12027981B2
公开(公告)日：2024-07-02
申请号：US17403765
申请日：2021-08-16
申请人： MAXLINEAR, INC.
CPC分类号： H02M3/1584 , H02M3/156 , H02M3/1586 , H03M1/143
摘要： Methods and systems for ripple suppression in multi-phase buck converters may comprise a buck converter for providing an output voltage with controlled ripple current. The buck converter may include one or more main buck converter stages and one or more suppression buck converter stages coupled with the one or more main buck converter stages. The one or more suppression buck converter stages may provide suppression currents to reduce ripple currents generated in the one or main buck converter stages.
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8.发明授权Encoder count error detection circuitry and encoder count error detection method 有权编码器计数错误检测电路和编码器计数错误检测方法公开(公告)号：US07397393B2
公开(公告)日：2008-07-08
申请号：US11636112
申请日：2006-12-08
申请人： Takeshi Yamamoto
发明人： Takeshi Yamamoto
IPC分类号： H03M1/22
CPC分类号： G01D5/24466 , G01D5/2451 , G05B2219/37154 , H03M1/1071 , H03M1/143 , H03M1/30
摘要： To provide encoder count error detection circuitry and an encoder count error detection method capable of realizing a highly reliable encoder by providing detection of the count errors of count signals used to measure displacement, an encoder count error detection circuitry and detection method configured as count error detection circuitry for an encoder outputting pulse trains according to the displacement of a measured object, doubles, triples, or quadruples one or more fundamental signals used for measuring displacement to convert to count signals, and compares the output signals of the counter counting these count signals with the level of these fundamental signals to detect count errors in the count signals.
摘要翻译： 为了提供编码器计数错误检测电路和编码器计数错误检测方法，能够通过提供用于测量位移的计数信号的计数误差的检测来实现高度可靠的编码器，编码器计数错误检测电路和配置为计数错误检测的检测方法 用于根据测量对象的位移输出脉冲串的编码器电路，将用于测量位移的一个或多个基本信号加倍，三倍或四倍以转换为计数信号，并将计数这些计数信号的计数器的输出信号与 这些基本信号的电平检测计数信号中的计数误差。
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公开(公告)号：US5091643A
公开(公告)日：1992-02-25
申请号：US561380
申请日：1990-07-31
申请人： Norio Okutani , Yutaka Masuda
发明人： Norio Okutani , Yutaka Masuda
摘要： A method and apparatus for simultaneously detecting and comparing a plurality of upper patterns indicative of Gray code patterns and having greater pattern pitches and a plurality of lower patterns indicative of pure binary code patterns and having smaller pattern pitches to correct the upper pattern detection data and thereby detect an absolute position. An absolute position detecting apparatus includes a code plate formed with a plurality of upper patterns and a plurality of lower patterns which are arranged radially along the periphery of a rotating body; a mask arranged at a position opposite to the code disc and having a plurality of upper slits and a plurality of first slits and a plurality of second slits which are formed to correspond to the lower patterns and having a 90-degree phase difference therebetween; a laser light source arranged at a position on the opposite side of the code plate to the mask to illuminate the code plate to form pattern projection images on the mask; a light detector for detecting the pattern projection images to detect positional alignment between the patterns and the slits; and data processing circuit for correcting detected data of the upper patterns by referring to those of the lower patterns.
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10.发明授权Optical and magnetic encoder for serially transmitting absolute position signals with an auxiliary power supply 失效用于使用辅助电源串行传输绝对位置信号的光磁编码器
公开(公告)号：US4988945A
公开(公告)日：1991-01-29
申请号：US165843
申请日：1988-03-09
申请人： Takashi Nagase
发明人： Takashi Nagase
IPC分类号： G01D5/14 , G01D5/16 , G01D5/244 , G01D5/245 , G01D5/249 , G05B19/39 , G06F1/30 , H03M1/06 , H03M1/10 , H03M1/14 , H03M1/24 , H03M1/28 , H03M1/30
CPC分类号： H03M1/143 , G01D5/145 , G01D5/2455 , G01D5/2497 , G05B19/39 , G06F1/30 , H03M1/1076 , G05B2219/37104 , G05B2219/37175 , G05B2219/50083 , H03M1/285 , H03M1/308
摘要： The rotation type absolute encoder of the present invention is constituted by a magnetic type one-pulse encoder for detecting one or more rotations, and an optical type absolute encoder comprising a plural number of aspheric LED lens as a light source, a group of detecting elements corresponding to the area of the light source, a slit disc beginning from the track of two slits, and a differential input type current-to-voltage convertor. This absolute encoder is also so constructed as to back up the circuit voltage by an external battery and an internal large capacitance capacitor when a current is cut, and has a circuit for serially transmitting a signal indicating the number of rotations and the absolute angle to an external controller, and a circuit for synthesizing and outputting one reference pulse per rotation from the signals of the magnetic type one-pulse encoder and the optical type absolute encoder.
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