公开(公告)号：WO1997044813A1

公开(公告)日：1997-11-27

申请号：PCT/US1997006672

申请日：1997-04-23

Applicant: HEWLETT-PACKARD COMPANY

Inventor： HEWLETT-PACKARD COMPANY ,  HANSEN, Stuart, C.

IPC: H01J49/42

CPC classification number: H01J49/424

Abstract: A hyperbolic ion trap is provided that includes a glass ring electrode and first and second glass end-cap electrodes. Hyperbolic surfaces of the electrodes are coated with a conductive material. The glass ring electrode and glass end-cap electrodes are formed by conforming glass substrates to a refractory mandrel and establishing hyperbolic surfaces thereon using vacuum and heat. Mass spectrometers including a glass hyperbolic ion trap are also provided as well.

Abstract translation: 提供了一种双曲线离子阱，其包括玻璃环电极和第一和第二玻璃端盖电极。 电极的双曲面用导电材料涂覆。 玻璃环电极和玻璃端帽电极通过使玻璃基板与耐火材料芯棒相符而形成，并使用真空和热量在其上建立双曲面。 还提供了包括玻璃双曲线离子阱的质谱仪。

公开(公告)号：WO1997039523A1

公开(公告)日：1997-10-23

申请号：PCT/IB1996000331

申请日：1996-04-16

Applicant: PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  HEWLETT-PACKARD COMPANY

Inventor： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  HEWLETT-PACKARD COMPANY ,  SHELTON, Boyd, N. ,  BUTHKER, Henricus, C., J.

IPC: H02P06/10

CPC classification number: H02P7/29 ,  H02P6/10

Abstract: A PWM controlled multiphase DC motor apparatus has a multiphase DC motor, a current sensor, and a PWM controller. The DC motor has multiple windings which turn on and off during commutation at a commutation frequency. The current sensor is coupled to sense power supply current flowing in all windings of the DC motor. The PWM controller is coupled to control the DC motor using a PWM signal at selected PWM frequency with variable duty cycle. Using the feedback from the current sensor, the PWM controller maintains approximately constant torque in the DC motor by adjusting the duty cycle of the PWM signal. The PWM controller includes a soft switching circuit which manipulates a voltage used to generate the controlling PWM signal in a manner which causes linear slewing of currents in the windings during commutation. The linear current slewing occurs at a slew rate that is slow relative to the PWM frequency to thereby reduce torque ripple during commutation. The combined features of continuous PWM duty cycle control and linear current slewing during commutation significantly reduces torque ripple at the fundamental commutation frequency, as well as at the first few harmonics. A method for PWM control of a multiphase DC motor is also described.

Abstract translation: PWM控制的多相直流电动机装置具有多相直流电动机，电流传感器和PWM控制器。 直流电动机具有多个绕组，其在换向频率的换向期间导通和关断。 电流传感器被耦合以感测在直流电动机的所有绕组中流动的电源电流。 PWM控制器被耦合以使用具有可变占空比的所选PWM频率的PWM信号来控制DC电动机。 使用电流传感器的反馈，PWM控制器通过调整PWM信号的占空比来保持直流电机的大致恒定的转矩。 PWM控制器包括一个软开关电路，其以在换向期间引起绕组中的电流的线性回转的方式操纵用于产生控制PWM信号的电压。 线性电流回转以相对于PWM频率缓慢的转换速率发生，从而减少换向期间的转矩波动。 在换向期间连续PWM占空比控制和线性电流回转的组合特征显着降低了基本换向频率以及前几个谐波处的转矩脉动。 还描述了一种用于多相DC电动机的PWM控制的方法。

公开(公告)号：WO1997037461A1

公开(公告)日：1997-10-09

申请号：PCT/GB1997000897

申请日：1997-03-27

Applicant: HEWLETT-PACKARD COMPANY ,  MAO, Wenbo

Inventor： HEWLETT-PACKARD COMPANY

IPC: H04L09/32

CPC classification number: H04L9/3236 ,  G06Q20/3678 ,  H04L9/3247 ,  H04L2209/42 ,  H04L2209/56

Abstract: A method of transmitting a message over a network from a sender to a receiver, comprises the steps of: taking a message (Coin) to be signed by the sender; signing the message into a digital signature (e, y) of the sender (steps 56, 58), the digital signature being generated as a function of that message using public and secret signature generators (x, r) of the sender, a private key (s) of the sender, and other publicly known values (a, p, q); and transmitting the signed message over the network to the receiver (step 60); characterised in that: the message to be signed by the sender incorporates a first value (f(x)) which is a first predetermined function (such as a secure one-way hash function) of the sender's public signature generator (x) (step 48). Its is thus possible that the incorporation of a proper first value can be verified by a receiver of the message who requires the sender to sign the message using a public signature generator, and furthermore that if a sender signs and transmits the same message more than once, the private key of the sender can be derived from the plurality of signed messages and a relationship between the public and private signature generators.

Abstract translation: 一种通过网络从发送方向接收方发送消息的方法，包括以下步骤：取消发送方签名的消息（硬币）; 将消息签名到发送者的数字签名（e，y）（步骤56,58）中，使用发送者的公共和秘密签名生成器（x，r），生成数字签名作为该消息的函数，私人 发送方的密钥和其他公知值（a，p，q）; 以及通过网络将签名的消息发送到接收机（步骤60）; 其特征在于：由发送者签署的消息包含作为发送方公共签名生成器（x）的第一预定功能（例如安全单向散列函数）的第一值（f（x））（步骤 48）。 因此，可以通过使用公共签名生成器来要求发送方签署消息的消息的接收者来验证合适的第一值的并入，此外，如果发送方不止一次地签署并发送相同的消息 ，可以从多个签名的消息和公共和私有签名生成器之间的关系导出发送者的私钥。

公开(公告)号：WO1997027541A1

公开(公告)日：1997-07-31

申请号：PCT/GB1997000222

申请日：1997-01-24

Applicant: HEWLETT-PACKARD COMPANY ,  FLEMING, Roger, Alan

Inventor： HEWLETT-PACKARD COMPANY

IPC: G06F11/14

CPC classification number: G06F11/2097 ,  G06F11/2028 ,  G06F11/2038 ,  G06F11/2041

Abstract: A recovery unit in a software fault-tolerant system has primary and secondary processing units (I, II) running replicate application processes (24). Input messages sent to the recovery unit are received at the primary unit (I) and in due course processed by the primary process (24) to produce application messages; however, these application messages produced by the primary process (24) are not normally output from the primary unit (I) as the recovery-unit output messages. Instead, these application messages are logged from the primary unit (I) to the secondary unit (II) together with state update information. The secondary process (24) run by secondary unit (II) uses this update information to update its own state so as to track the state of the primary process. The secondary unit (II) outputs the application messages logged to it from the primary unit (I) as the recovery-unit output messages. Should the primary unit (I) fail, the secondary unit (II) takes over the role of the primary. Furthermore, in the absence of an operative secondary unit (II) (due either to its failure or to its promotion to the primary unit), the primary unit becomes responsible for outputting its own application messages as the recovery-unit output messages. Configurations with multiple secondaries are also possible.

Abstract translation: 软件容错系统中的恢复单元具有运行复制应用程序（24）的主要和次要处理单元（I，II）。 发送到恢复单元的输入消息在主单元（I）处被接收并且在适当的时候被主进程（24）处理以产生应用消息; 然而，由主处理（24）产生的这些应用消息通常不作为恢复单元输出消息从主单元（I）输出。 相反，这些应用消息与状态更新信息一起从主单元（I）记录到次要单元（II）。 由次级单元（II）运行的辅助处理（24）使用该更新信息来更新其自身状态，以便跟踪主进程的状态。 次级单元（II）将从主单元（I）记录的应用消息作为恢复单元输出消息输出。 如果主单元（I）失败，则次级单元（II）将接管主单元（I）的作用。 此外，在没有操作的次级单元（II）（由于其故障或其升级到主单元的情况下）的情况下，主单元负责输出其自己的应用消息作为恢复单元输出消息。 具有多个辅助功能的配置也是可能的。

公开(公告)号：WO1997025152A1

公开(公告)日：1997-07-17

申请号：PCT/US1996020935

申请日：1996-12-31

Applicant: HEWLETT-PACKARD COMPANY ,  PREDTECHENSKY, Mikhail

Inventor： HEWLETT-PACKARD COMPANY

IPC: B05B01/08

CPC classification number: B05B17/0607 ,  B23K3/0607 ,  B23K2101/40 ,  H05K3/1241 ,  H05K3/3468

Abstract: A simple yet highly reliable technique for ejecting a droplet of heated solder, or other liquid conductive material, is described. Small droplets of an electrically-conductive liquid are ejected on-demand from a drop generator (100) operating on a magnetohydrodynamic principle. The drop generator (100) consists of two substantially parallel conductive paths (14, 16) separated by a thin electrically-insulating material (18). A channel (12) for the conductive liquid contains a drop ejecting orifice (20), and the conductive liquid in the channel forms a first (16) of these two parallel conductive paths. The other path (14) is either a solid conductor or a second channel filled with the conductive liquid. A current on the order of 10-1000 amperes is pulsed through the two parallel conductive paths, and the interaction of the magnetic fields generated by the electric currents through the parallel paths with these currents forces a droplet (24) of the conductive liquid through the orifice (20) in the first channel (16). By adjusting the duration and/or magnitude of the pulsed current, the droplet size may be carefully controlled. In the preferred embodiment, the drop generator (100) is in the form of a self-contained replaceable cartridge.

Abstract translation: 描述了用于喷射加热焊料液滴或其它液体导电材料的简单且高度可靠的技术。 导电液体的小液滴按照磁流体动力学原理从液滴发生器（100）按需喷射。 液滴发生器（100）包括由薄的电绝缘材料（18）分开的两个基本平行的导电路径（14,16）。 用于导电液体的通道（12）包含液滴喷射孔（20），并且通道中的导电液体形成这两个平行导电路径中的第一（16）。 另一路径（14）是固体导体或填充有导电液体的第二通道。 大约10-1000安培的电流通过两个平行的导电路径被脉冲，并且由这些电流通过平行路径的电流产生的磁场的相互作用迫使导电液体的液滴（24）通过 第一通道（16）中的孔口（20）。 通过调节脉冲电流的持续时间和/或幅度，可以小心地控制液滴大小。 在优选实施例中，液滴发生器（100）是独立的可更换盒的形式。

公开(公告)号：WO1996034312A1

公开(公告)日：1996-10-31

申请号：PCT/GB1996001009

申请日：1996-04-29

Applicant: HEWLETT-PACKARD COMPANY ,  GEISOW, Adrian, Derek ,  RUDIN, John, Christopher

Inventor： HEWLETT-PACKARD COMPANY

IPC: G02F01/1343

CPC classification number: G02F1/13439 ,  G02F1/134336 ,  G02F2203/30

Abstract: An electro-optic display (10) provides an electrode configuration adjacent each pixel which allows a non-uniform electrical field to be applied across the pixel (22) so that the optical output varies in the direction tranverse to the pixel thickness. This allows only part of the pixel to be turned ON, or for shading within the pixel, depending on the characteristics of the electro-optic material. In a preferred embodiment the row and column electrodes (14, 17) are each made up of a group of conductive tracks (12, 18) connected into groups by impedance elements (13, 19). Voltage ramps are applied across the electrodes via input electrodes (15) and (20). A multiphase drive scheme is described for ferro-electric and similar materials in which a number of different voltage ramps are applied to a row in succession, and at each phase the appropriate ramps are applied simultaneously to the column electrodes to build up the required pixel shape over a number of phases.

Abstract translation: 电光显示器（10）提供与每个像素相邻的电极配置，其允许跨越像素（22）施加不均匀的电场，使得光输出在与像素厚度相反的方向上变化。 这取决于电光材料的特性，这允许仅部分像素被打开，或者用于像素内的阴影。 在优选实施例中，行和列电极（14,17）各自由一组通过阻抗元件（13,19）连接成组的导电轨道（12,18）组成。 电压斜坡通过输入电极（15）和（20）施加在电极两端。 对于铁电和类似材料描述了多相驱动方案，其中多个不同的电压斜坡连续施加到一行，并且在每个相位，适当的斜坡同时施加到列电极以建立所需的像素形状 在一些阶段。