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公开(公告)号：US5475628A
公开(公告)日：1995-12-12
申请号：US954149
申请日：1992-09-30
申请人： Robert W. Adams , Tom W. Kwan , Michael Coln
发明人： Robert W. Adams , Tom W. Kwan , Michael Coln
CPC分类号： H03H17/0628
摘要： An asynchronous digital sample rate converter includes a random access memory for storing input data values and a read only memory for storing a reduced set of interpolation filter coefficients. Input data is written to the random access memory at the input sample rate. Output samples are provided from a multiply/accumulate engine which given a stream of input data and filter coefficients produces an output sample upon request at the output frequency. The initial address for reading input data from the random access memory, and the addresses for coefficients from the read only memory are provided by an auto-centering scheme which is a first order closed loop system with a digital integrator fed by an approximation of the input to output sample rate ratio. This auto-centering scheme may include a feed forward low pass filter to cancel steady state error, and an interpolated write address to reduce noise. A circuit determining the output to input sample rate ratios can also be provided to scale coefficient addresses and resulting output samples to allow for decimation. This circuit includes a form of digital hysteresis to eliminate noise. The ROM coefficients are reduced by relying on the symmetry of the impulse response of the interpolation filter and by utilizing a variable step size forward and backward linear interpolation.
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22.发明授权Error reduction in switched capacitor digital-to-analog converter systems by balanced sampling 失效开关电容数模转换器系统通过平衡采样降低误差
公开(公告)号：US5412387A
公开(公告)日：1995-05-02
申请号：US44370
申请日：1993-04-06
摘要： A switched-capacitor DAC system includes two switched-capacitor DACs and a load circuit. The switched-capacitor filter of the first DAC samples a reference voltage source, which produces a reference voltage, at a first rate and the switched-capacitor filter of the second DAC samples the reference voltage source at a second rate, greater than the first rate. The load circuit samples the reference voltage source at a rate such that the level of the reference voltage is the same each time a sample is taken. The load circuit effectively equates the sampling of the two filters and substantially eliminates problems related to gain errors and low frequency quantization noise.
摘要翻译： 开关电容DAC系统包括两个开关电容DAC和负载电路。 第一DAC的开关电容滤波器以第一速率对产生参考电压的参考电压源进行采样，并且第二DAC的开关电容滤波器以比第一速率的第二速率对第二速率采样第二速率 。 负载电路以参考电压的电平在每次采样时相同的速率对参考电压源进行采样。 负载电路有效地等同于两个滤波器的采样，并且基本上消除了与增益误差和低频量化噪声有关的问题。
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公开(公告)号：US5311181A
公开(公告)日：1994-05-10
申请号：US60890
申请日：1993-05-12
CPC分类号： H03G3/02 , H03M3/454 , H03M7/3035 , H03M3/43 , H03M3/446 , H03M3/45 , H03M7/3028 , H03M7/304
摘要： A separate filter circuit is inserted between the D/A converter and the summing junction in the feedback path of a conventional sigma delta modulator. This additional filter allows control of the quantization noise transfer function profile independently of the forward signal transfer function. By proper tailoring of the transfer functions a third or higher order modulator can be constructed without instability developing. The modulator can also be constructed as a completely digital circuit and used as a noise shaping circuit in a digital digital-to-analog converter.
摘要翻译： 在常规Σ-Δ调制器的反馈路径中的D / A转换器和求和结点之间插入单独的滤波电路。 该附加滤波器允许独立于正向信号传递函数来控制量化噪声传递函数谱。 通过适当调整传递函数，可以构建第三个或更高阶的调制器，而不会产生不稳定的发展。 调制器也可以构造为完全数字电路，并用作数字数/模转换器中的噪声整形电路。
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公开(公告)号：US5294913A
公开(公告)日：1994-03-15
申请号：US829455
申请日：1992-01-31
CPC分类号： A63B24/0021 , A63B63/083 , A63B71/0669 , A63B2024/0037 , A63B2208/12 , A63B63/00
摘要： A portable electronic scoreboard comprising a housing with a display face, an electronic mechanism disposed within the housing, and a score registering assembly. The housing back configuration is amenable to releasable attachment to a pole or a flat surface such as a wall. The housing back face configuration comprises a longitudinal channel capable of disposition adjacent to a pole and a strap fastener extendable about the pole. The housing back configuration also comprises a pair of flat surfaced wings having slots capable of receiving bolts of the like to secure the housing to a wall. The score registering assembly may be positioned to detect the successful passage of a basketball through a basketball goal. The score registering assembly comprises a paddle and a switch. The paddle actuates the switch if a basketball passing through the goal causes the paddle to change from a ready to a reactive position. The switch thereby detects successful scores and communicates such scores to the electronic mechanism for processing and display. The score registering assembly also comprises a self-locking adjustable arm attachment assembly for securing the score registering assembly to the basketball goal. The arms of the attachment assembly are laterally adjustable and configured with grooves to permit clamping engagement with the rim plate portion of the basketball goal.
摘要翻译： 一种便携式电子记分板，包括具有显示面的壳体，设置在壳体内的电子机构和分数记录组件。 壳体背部构造适于可释放地附接到杆或诸如墙壁的平坦表面。 壳体背面构造包括能够邻近杆的配置的纵向通道和能够围绕杆延伸的带紧固件。 壳体背部构造还包括一对平坦的表面翼，其具有能够接收类似物的螺栓的槽，以将壳体固定到壁上。 评分记录组件可以定位成检测篮球通过篮球目标的成功通过。 分数记录组件包括桨叶和开关。 如果穿过目标的篮球导致桨从准备状态变为无效位置，则桨驱动开关。 切换器由此检测成功的分数，并将这些分数传达到用于处理和显示的电子机构。 分数记录组件还包括用于将分数记录组件固定到篮球目标的自锁可调臂附接组件。 附件组件的臂可横向调节并且配置有凹槽以允许与篮球目标的边缘板部分夹紧接合。
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公开(公告)号：US4331931A
公开(公告)日：1982-05-25
申请号：US131225
申请日：1980-03-17
申请人： Robert W. Adams
发明人： Robert W. Adams
CPC分类号： H03G1/0005 , H03G7/002
摘要： Amplification means responsive to an input signal of a gain control circuit is utilized in each log-antilog transmission path of the gain control circuit so as to provide in each path signal gain as a function of said input signal.
摘要翻译： 利用增益控制电路的输入信号的放大装置，用于增益控制电路的每个对数 - 对数传输路径，以便在每个路径中提供作为所述输入信号的函数的信号增益。
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公开(公告)号：USD262760S
公开(公告)日：1982-01-26
申请号：US104040
申请日：1979-12-17
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公开(公告)号：US10993906B2
公开(公告)日：2021-05-04
申请号：US16459577
申请日：2019-07-01
申请人： Robert W. Adams
发明人： Robert W. Adams
IPC分类号： A61K9/00 , A61K45/06 , A61K31/4468 , A61K31/485
摘要： An improved medical implant device directed to, inter alia, (i) avoiding unwanted initial drug “burst” problems, (ii) providing a more level amount of drug delivery, (iii) reducing blood clotting, (iv) reducing the amount of drug material that remains in the implant device, and/or (v) novel materials for an implant device.
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公开(公告)号：US10010501B2
公开(公告)日：2018-07-03
申请号：US15233632
申请日：2016-08-10
申请人： Robert W. Adams
发明人： Robert W. Adams , Wayne C. Pollock
IPC分类号： A61K9/00 , A61K31/485 , B33Y10/00 , B33Y80/00 , B29C67/00 , A61L31/14 , A61L31/16 , B29K67/00 , B29L31/00
CPC分类号： A61K9/0024 , A61K31/485 , A61L31/08 , A61L31/148 , A61L31/16 , A61L2300/604 , A61L2420/02 , B29C64/112 , B29C64/386 , B29K2067/046 , B29K2995/0056 , B29K2995/006 , B29L2031/753 , B33Y10/00 , B33Y50/02 , B33Y80/00
摘要： A method (and the resulting product) of making a medical implant device for releasing self-contained drugs on a controlled basis wherein the method utilizes, at least in part, computer-controlled 3-D printing equipment to deposit via nozzles portions of one or more layers of the medical implant product. The implant has an outer impervious coating, an inner matrix core, an opening and an optional bonding layer.
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公开(公告)号：US20170212144A1
公开(公告)日：2017-07-27
申请号：US15007752
申请日：2016-01-27
CPC分类号： G01P15/03 , G01H9/00 , G01P1/006 , G01P15/093 , G01P21/00 , G01V7/00 , G01V2210/1429
摘要： An apparatus for measuring acceleration includes: a reference cavity having a first fixed reflecting surface and a second fixed reflecting surface; a sense cavity having a fixed reflecting surface and a non-fixed reflecting surface, the non-fixed reflecting surface being configured to be displaced when subject to an acceleration force; a light source to illuminate the reference and sense cavities; a controller to vary a wavelength of light emitted by the light source and/or an index of refraction of an optical medium of the cavities; a photodetector to detect light emitted by the reference and sense cavities; an interferometer sensor to measure using the detected light, for each variation of the wavelength of light and/or the index of refraction a reference displacement of the reference cavity and a sense displacement of the sense cavity; and a processor to calculate the acceleration using each of the reference displacements and the sense displacements.
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公开(公告)号：US5133546A
公开(公告)日：1992-07-28
申请号：US644929
申请日：1991-01-23
申请人： Lonny R. Matherne , Robert W. Adams
发明人： Lonny R. Matherne , Robert W. Adams
CPC分类号： A63B24/0021 , A63B63/083 , A63B69/0071 , A63B71/0669 , A63B2024/0037 , A63B2063/001 , A63B2208/12 , A63B63/00
摘要： An arcade-type foldable basketball game apparatus upon which games may be played using a basketball is provided, having a framework with a support portion and an extended portion pivotally connected to the support portion so that the extended portion is movable between an upright, storage position and a recumbent, ready-to-play position. The support portion is configured to maintain an upright disposition independent of whether the extended portion is disposed in the upright position or the recumbent position. The movement of the extended portion is controlled by a releasable catch and detent assembly for securing the extended portion in either the storage position or the ready-to-play position. One or two basketball goals are connected to the support portion of the framework and a ball return is connected to said framework to return basketballs shot at the goals by players to the players. Each basket scored is counted by a scoring mechanism which displays the time remaining in a game and the running and final scores.
摘要翻译： 提供一种可以使用篮球进行游戏的街机式折叠式篮球游戏装置，具有支撑部的框架和与支撑部枢转地连接的延伸部，使得延伸部能够在直立的存放位置 和一个卧室，即时的位置。 支撑部分被配置为保持直立配置，而不管延伸部分是放置在直立位置还是放置位置。 延伸部分的移动由可释放的卡扣和止动组件控制，用于将延伸部分固定在存放位置或准备就绪位置。 一个或两个篮球目标连接到框架的支撑部分，并且球返回连接到所述框架，以将玩家的目标射门的篮球返回给玩家。 每个得分的篮子都被计分机制计算，显示游戏中剩余的时间以及运行和最终得分。
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