公开(公告)号：US5523580A

公开(公告)日：1996-06-04

申请号：US173315

申请日：1993-12-23

Applicant: Donald E. Davis

Inventor： Donald E. Davis

IPC: G03F1/08 ,  H01J37/317 ,  H01L21/027 ,  H01J37/09

CPC classification number: B82Y10/00 ,  B82Y40/00 ,  H01J37/3174 ,  H01J2237/31764 ,  H01J2237/31788 ,  H01J2237/31794

Abstract: A reticle for an electron beam system for direct writing applications has a base layer that contains a reticle pattern; a set of reinforcing struts connected to the base layer separating the base layer into a set of non-contiguous subfields; in which the pattern is carried by a set of apertures areas in said base layer; and in which the set of non-contiguous subfields has overlapping rim portions in which the overlap portions of corresponding lines have a pattern that produces the correct exposure when the subfields are correctly aligned and minimizes pattern feature discontinuities when the subfields are misaligned. A corresponding method consists of overlapping the reticle at the field or subfield boundaries and forming a spatial breakup or a partially transmissive area of the pattern elements contained in the overlapped areas, preventing shorts and open failures in the lines or pattern elements and providing additional tolerance for the alignment of the adjacent fields or subfields.

Abstract translation: 用于直接写入应用的电子束系统的掩模版具有含有标线图案的基层; 连接到基层的一组加强支柱，将基层分成一组不连续的子场; 其中所述图案由所述基底层中的一组孔区承载; 并且其中所述一组非连续子场具有重叠的边缘部分，其中当子场被正确对准时，相应线的重叠部分具有产生正确曝光的图案，并且当子场不对准时使图案特征不连续性最小化。 相应的方法包括将掩模版在场或子场边界处重叠，并形成包含在重叠区域中的图案元素的空间分裂或部分透射区域，防止线或图案元件中的短路和开路故障，并为 相邻字段或子字段的对齐。

公开(公告)号：US5479519A

公开(公告)日：1995-12-26

申请号：US202030

申请日：1994-02-25

Applicant: Donald E. Davis

Inventor： Donald E. Davis

IPC: H04H60/04 ,  H04B1/00

CPC classification number: H04H60/04

Abstract: Disclosed is a device which provides a logic signal that indicates a true "on air" event during broadcast production. Each audio channel input from a microphone to a mixing console is coupled to a circuit arrangement which determines whether a mute switch is selected, a fader is set for full attenuation, or an input switch is deselected. If none of these events have occurred a signal is provided to an external display which is optically isolated from the mixing console. This signal controls a tally which indicates to a user that the corresponding input channel, for example, from a microphone is active.

Abstract translation: 公开了一种在广播制作期间提供指示真实“空中”事件的逻辑信号的装置。 从麦克风输入到混音台的每个音频通道被耦合到电路装置，该电路装置确定是否选择了静音开关，将推子设置为完全衰减，或者取消选择输入开关。 如果没有发生这些事件，则将信号提供给与调音台光学隔离的外部显示器。 该信号控制对用户指示例如来自麦克风的相应输入通道是活动的计数。

公开(公告)号：US4456860A

公开(公告)日：1984-06-26

申请号：US342321

申请日：1982-01-25

Applicant: George W. Cann ,  Donald E. Davis ,  Ralph R. Trotter

Inventor： George W. Cann ,  Donald E. Davis ,  Ralph R. Trotter

IPC: G05D3/12 ,  G05B19/23 ,  G05D3/20 ,  H01L21/027 ,  G05B13/00

CPC classification number: G05B19/231 ,  G05D3/20

Abstract: An X-Y positioning system for electron beam lithography employs an adaptive drive system for feedback control. A gradually increasing drive voltage, superimposed upon a step wave, is summed with the position error signal to achieve position within the system deadband zone. The drive voltage, while superimposed upon the error voltage, increases until mechanical friction and drift in the deadband zone are overcome. A function generator alters the error signal such that the combined error signal and drive voltage cause the system to approach the null point minimizing servo oscillations. A limit circuit determines when the system has reached a set of inner limits and generates an operative output signal to the signal controller which continues until the position exceeds a second, outer set of limits.

Abstract translation: 用于电子束光刻的X-Y定位系统采用自适应驱动系统进行反馈控制。 叠加在阶跃波上的逐渐增加的驱动电压与位置误差信号相加，以实现系统死区区域内的位置。 当驱动电压叠加在误差电压上时，直到克服了死区中的机械摩擦和漂移。 函数发生器改变误差信号，使得组合的误差信号和驱动电压使得系统接近零点以最小化伺服振荡。 限制电路确定系统什么时候已经达到一组内部限制，并且产生到信号控制器的操作输出信号，该信号控制器继续直到位置超过第二外部限制。

公开(公告)号：US5420933A

公开(公告)日：1995-05-30

申请号：US135351

申请日：1993-10-13

Applicant: Michael A. Zampini ,  Donald E. Davis ,  Joseph J. Dombrowski

Inventor： Michael A. Zampini ,  Donald E. Davis ,  Joseph J. Dombrowski

IPC: G11B20/02 ,  G11B20/00 ,  G11B27/02 ,  G11B27/024 ,  G11B27/028 ,  G11B27/038 ,  G11B31/00 ,  H04H60/04 ,  H04B1/00

CPC classification number: H04H60/04 ,  G11B20/00 ,  G11B27/028 ,  G11B31/00 ,  G11B2220/90 ,  G11B27/038

Abstract: Disclosed is an apparatus for configuring an audio follow video mixer used to process audio signals input from several multi-channel devices, such as VTRs. Configuration of the audio follow video mixer system can be achieved either through several input modules which couple the multi-channel devices to the mixer, or preset configurations can be provided to the input modules and remotely located devices, such as a video editor, through a serial interface module.

Abstract translation: 公开了一种用于配置用于处理从诸如VTR的多个多通道设备输入的音频信号的音频跟随视频混合器的装置。 可以通过将多声道设备耦合到混音器的多个输入模块来实现音频跟随视频混合器系统的配置，或者可以通过以下方式将预设配置提供给输入模块和远程定位的设备，例如视频编辑器 串行接口模块

公开(公告)号：US4992920A

公开(公告)日：1991-02-12

申请号：US406720

申请日：1989-09-13

Applicant: Donald E. Davis

Inventor： Donald E. Davis

IPC: H02J7/14 ,  H02M5/458 ,  H02P9/30

CPC classification number: H02P9/30 ,  H02J7/1438 ,  H02M5/458 ,  H02P2101/15

Abstract: A three phase alternator is driven by a variable speed prime mover, and its rectified output is pulse width modulated by a gate controlled H-bridge power switch circuit. Predetermined pairs of power switches are gated on and off according to programmed duration and timing instructions contained in a read only memory. In a first embodiment, a sine wave output is produced by successive pulse trains. The first pulse train has alternating positive and negative constant amplitude pulses, with the widths of positive pulses varying sinusoidally and the widths of negative pulses being constant. The second pulse train has alternating positive and negative pulses of constant amplitude, with the pulse widths of the negative pulse components varying sinusoidally, and the pulse widths of the positive components being constant. The components of the first and second pulse trains have an energy distribution which corresponds to one cycle of a sine wave having a fixed frequency. The pulse width modulated waveform is filtered to produce a smooth, low distortion sine wave output waveform. In a second embodiment, the on and off states, and the duration and timing of the on and off states, are controlled to produce a pseudo sine output power wave having an RMS value of 120 VAC at 60 Hz.

Abstract translation: 三相交流发电机由变速原动机驱动，其整流输出由门控H桥电源开关电路进行脉宽调制。 根据编程的持续时间和包含在只读存储器中的定时指令，预定的电源开关对被选通和关闭。 在第一实施例中，正弦波输出由连续的脉冲串产生。 第一个脉冲串具有交变的正和负恒定幅度脉冲，正脉冲的宽度正弦变化，负脉冲的宽度是恒定的。 第二脉冲串具有恒定振幅的交替正负脉冲，负脉冲分量的脉冲宽度正弦变化，正分量的脉冲宽度恒定。 第一和第二脉冲串的分量具有对应于具有固定频率的正弦波的一个周期的能量分布。 对脉宽调制波形进行滤波，产生平滑，低失真的正弦波输出波形。 在第二实施例中，控制导通和截止状态以及导通和关断状态的持续时间和定时，以产生具有60V的RMS值为120VAC的伪正弦输出功率波。

公开(公告)号：US4795332A

公开(公告)日：1989-01-03

申请号：US85945

申请日：1987-08-17

Applicant: Donald E. Davis

Inventor： Donald E. Davis

IPC: E01C19/40 ,  E04F21/24 ,  E01C19/30

CPC classification number: E01C19/402 ,  E04F21/242 ,  E01C2301/16

Abstract: A screed for forming the surface of a freshly poured concrete slab has parallel blades which are slidable relative to each other enabling extension and contraction of the screed during operation. The concrete surface is formed by pivoting movement of the screed around fixed pivot structure which supports and anchors one end of the screed. Vibrating mechanism may be included to tamp the concrete concurrently with the surface forming operation. The apparatus may be operated by a single person if necessary and the operator may extend and contract the screed during the pivoting movement in order to follow the outline of the concrete slab and/or to avoid interference from obstructions in the vicinity of the slab.

Abstract translation: 用于形成新浇混凝土板的表面的熨平板具有可相对于彼此滑动的平行叶片，其能够在操作期间延伸和收缩熨平板。 混凝土表面通过围绕固定枢轴结构的熨平板的枢转运动形成，其支撑并固定熨平板的一端。 可以包括振动机构以与表面成形操作同时夯实混凝土。 如果需要，该装置可以由单个人操作，并且操作者可以在枢转运动期间延伸和收缩熨平板，以便遵循混凝土板的轮廓和/或避免板坯附近的障碍物的干扰。

公开(公告)号：US4660435A

公开(公告)日：1987-04-28

申请号：US267323

申请日：1981-05-26

Applicant: Donald E. Davis ,  Kenneth T. Ingham

Inventor： Donald E. Davis ,  Kenneth T. Ingham

IPC: F16F15/30 ,  F16C15/00 ,  F16F15/305

CPC classification number: F16F15/305 ,  F16C15/00 ,  Y10T74/2132

Abstract: A flywheel 2 comprising a hub 4 having at least one radially projecting disc 6, an annular rim 14 secured to said disc and providing a surface circumferential to said hub, a first plurality of resin-impregnated fibers 22 wound about said rim congruent to said surface, and a shell 26 enclosing said first plurality of fibers and formed by a second plurality of resin-impregnated fibers wound about said rim tangentially to said surface.

Abstract translation: 飞轮2包括具有至少一个径向突出的盘6的轮毂4，固定到所述盘并且提供与所述轮毂圆周的表面的环形轮圈14，围绕所述轮缘缠绕的第一多个树脂浸渍的纤维22， 以及包围所述第一多根纤维并由绕所述边缘缠绕在所述表面上的第二多个树脂浸渍纤维形成的外壳26。

公开(公告)号：US4249218A

公开(公告)日：1981-02-03

申请号：US72076

申请日：1979-09-04

Applicant: Donald E. Davis ,  Robert J. Youngouist

Inventor： Donald E. Davis ,  Robert J. Youngouist

IPC: G11B27/00 ,  G11B27/032 ,  G11B27/034 ,  G11B27/10 ,  G11B27/32 ,  G11B31/00 ,  G11B27/02

CPC classification number: G11B27/10 ,  G11B27/002 ,  G11B27/032 ,  G11B27/323 ,  G11B31/00 ,  G11B2220/90 ,  G11B2220/913 ,  G11B27/034

Abstract: An apparatus for editing digitally recorded audio signals in which entry and exit edit points are designated based on a display of data derived from audio signal data proximate to the edit points. The apparatus enables the automatic selection and combination of portions of audio signals on at last two channels to produce a composite audio signal digitally recorded on a record medium.

Abstract translation: 一种用于编辑数字记录的音频信号的装置，其中基于从靠近编辑点的音频信号数据导出的数据的显示来指定入口和出口编辑点。 该装置能够在最后两个通道上自动选择和组合音频信号的部分，以产生数字记录在记录介质上的复合音频信号。

公开(公告)号：US08091460B2

公开(公告)日：2012-01-10

申请号：US12770413

申请日：2010-04-29

Applicant: Sean A. Hainze ,  Donald E. Davis

Inventor： Sean A. Hainze ,  Donald E. Davis

IPC: F41F3/052

CPC classification number: F41F3/0406 ,  F41F3/052

Abstract: The invention efficiently and effectively secures and releases a rail-launched missile. An asymmetrical secure-release wheel (70) is defined by several surfaces which extend radially outward from a pivot hole (70K). The surfaces include a wheel unlatch surface (70H), a wheel notch stop surface (70D), a wheel detent surface (70G), a clockwise stop surface (70C) and a counterclockwise stop surface (70B). The wheel (70) is rotatable within a wheel housing (72). When a missile is loaded onto the launch rail, the middle shoe of the missile engages the detent surface (70G) of the wheel. During missile launch, the plume of the missile moves a trigger (110) which pulls a connecting rod (52) aft which results in a wheel lock (78) being disengaged from the detent surface (70G). A microswitch (56) provides a signal indicating whether the wheel (70) is in a latched or unlatched state.

Abstract translation: 本发明有效，有效地保护和释放轨道导弹。 不对称的安全释放轮（70）由从枢轴孔（70K）径向向外延伸的几个表面限定。 表面包括车轮解锁表面（70H），车轮凹口止动表面（70D），车轮止动表面（70G），顺时针止动表面（70C）和逆时针止动表面（70B）。 轮（70）可在轮壳（72）内旋转。 当导弹装载到发射轨上时，导弹的中间鞋子与车轮的制动表面（70G）相接。 在导弹发射期间，导弹的羽流移动触发器（110），该触发器（110）将后面的连杆（52）拉动，导致车轮锁定件（78）与制动表面（70G）脱离。 微动开关（56）提供指示车轮（70）是否处于锁定或解锁状态的信号。

公开(公告)号：US20110265637A1

公开(公告)日：2011-11-03

申请号：US12770413

申请日：2010-04-29

Applicant: Sean A. Hainze ,  Donald E. Davis

Inventor： Sean A. Hainze ,  Donald E. Davis

IPC: F41F3/052

CPC classification number: F41F3/0406 ,  F41F3/052

Abstract: The invention efficiently and effectively secures and releases a rail-launched missile. An asymmetrical secure-release wheel (70) is defined by several surfaces which extend radially outward from a pivot hole (70K). The surfaces include a wheel unlatch surface (70H), a wheel notch stop surface (70D), a wheel detent surface (70G), a clockwise stop surface (70C) and a counterclockwise stop surface (70B). The wheel (70) is rotatable within a wheel housing (72). When a missile is loaded onto the launch rail, the middle shoe of the missile engages the detent surface (70G) of the wheel. During missile launch, the plume of the missile moves a trigger (110) which pulls a connecting rod (52) aft which results in a wheel lock (78) being disengaged from the detent surface (70G). A microswitch (56) provides a signal indicating whether the wheel (70) is in a latched or unlatched state.

Abstract translation: 本发明有效，有效地保护和释放轨道导弹。 不对称的安全释放轮（70）由从枢轴孔（70K）径向向外延伸的几个表面限定。 表面包括车轮解锁表面（70H），车轮凹口止动表面（70D），车轮制动表面（70G），顺时针止动表面（70C）和逆时针止动表面（70B）。 轮（70）可在轮壳（72）内旋转。 当导弹装载到发射轨上时，导弹的中间鞋子与车轮的制动表面（70G）相接。 在导弹发射期间，导弹的羽流移动触发器（110），该触发器（110）将后面的连杆（52）拉动，导致车轮锁定件（78）与制动表面（70G）脱离。 微动开关（56）提供指示车轮（70）是否处于锁定或解锁状态的信号。