Methods and Apparatus for Identifying Ion Species Formed during Gas-Phase Reactions
    1.
    发明申请
    Methods and Apparatus for Identifying Ion Species Formed during Gas-Phase Reactions 审中-公开
    用于识别气相反应中形成的离子物种的方法和装置

    公开(公告)号:US20140179020A1

    公开(公告)日:2014-06-26

    申请号:US13721603

    申请日:2012-12-20

    Inventor: David A. WRIGHT

    CPC classification number: H01J49/0036 G16C20/20 Y10T436/24

    Abstract: A method for matching each of a plurality of progenitor ion types to respective product or fragment ion types, comprising: generating the plurality of progenitor ion types over a time range by ionizing compounds eluting during the time range using an atmospheric pressure ion source; generating the product or fragment ion types within a pressure range of 750 mTorr to atmospheric pressure in an ionization chamber or first vacuum chamber; detecting abundances of the plurality of progenitor ion types and the product or fragment ion types using a mass analyzer; calculating a plurality of extracted ion chromatograms (XICs) relating to the detected abundances; automatically detecting and characterizing chromatogram peaks within each XIC; automatically generating synthetic analytical fit peaks; performing cross-correlation score calculations between each pair of synthetic analytical fit peaks; and recognizing matches based on the cross correlation scores.

    Abstract translation: 一种将多种前体离子类型中的每一种与相应的产物或碎片离子类型相匹配的方法,包括:通过使用大气压离子源在所述时间范围内电离化合物在一段时间范围内产生所述多种祖细胞离子类型; 在电离室或第一真空室中产生在750mTorr至大气压力的压力范围内的产物或碎片离子类型; 使用质量分析器检测多种前体离子类型的丰度和产物或碎片离子类型; 计算与检测到的丰度相关的多个提取离子色谱图(XIC); 自动检测和表征每个XIC内的色谱峰; 自动生成合成分析拟合峰; 在每对合成分析拟合峰之间进行互相关分数计算; 并根据互相关分数识别匹配。

    DISPLAY INTERFACE BUFFER
    2.
    发明申请
    DISPLAY INTERFACE BUFFER 有权
    显示界面缓冲区

    公开(公告)号:US20080263260A1

    公开(公告)日:2008-10-23

    申请号:US11965485

    申请日:2007-12-27

    CPC classification number: H03K17/687 H03K19/0016 H03K19/00369

    Abstract: A display interface buffer includes a general purpose memory to store data capable of being displayed on a panel, a plurality of display drivers to receive data from the general purpose memory, each of the display drivers to drive a different portion of the panel with the data, and processor or a direct memory access controller to access data in the general purpose memory and to provide the data to the display drivers for presentation on the panel.

    Abstract translation: 显示接口缓冲器包括用于存储能够显示在面板上的数据的通用存储器,用于从通用存储器接收数据的多个显示驱动器,每个显示驱动器以数据驱动面板的不同部分 以及处理器或直接存储器访问控制器来访问通用存储器中的数据,并将数据提供给显示驱动器以在面板上呈现。

    Virtual path asynchronous transfer mode switching in a processing satellite communications system
    3.
    发明授权
    Virtual path asynchronous transfer mode switching in a processing satellite communications system 有权
    虚拟路径异步传输模式切换处理卫星通信系统

    公开(公告)号:US07164683B1

    公开(公告)日:2007-01-16

    申请号:US09408808

    申请日:1999-09-29

    Abstract: The present invention provides a method (100) for virtual path switching of an ATM cell on a processing communications satellite. The method includes establishing a set of VPIs (104) associated with output ports on the satellite and assigning one VPI to an ATM cell (108). The ATM cell may then be received by an input port of the satellite (110). An associated output port (114) for the ATM cell is determined from the VPI, and the ATM cell is transferred to that output port (116). The present invention may also provide for multicast switching (400). The VPI assigned to the ATM cell may be associated with a multicast output port. The ATM cells may be reproduced (426) and reassigned with a new VPI from a multicast group of VPIs (428). The reproduced cells are received at an input port of the satellite (430) for routing to the corresponding output ports.

    Abstract translation: 本发明提供一种用于处理通信卫星上的ATM信元的虚拟路径切换的方法(100)。 该方法包括建立与卫星上的输出端口相关联的一组VPI(104)并将一个VPI分配给ATM信元(108)。 然后可以由卫星(110)的输入端口接收ATM信元。 从VPI确定用于ATM信元的相关联的输出端口(114),并且ATM信元被传送到该输出端口(116)。 本发明还可以提供组播切换(400)。 分配给ATM信元的VPI可以与多播输出端口相关联。 ATM单元可以被再现(426)并且从VPI的多播组中重新分配新的VPI(428)。 在卫星(430)的输入端口处接收再现的小区,用于路由到相应的输出端口。

    Satellite communication system threshold leveling techniques
    5.
    发明授权
    Satellite communication system threshold leveling techniques 有权
    卫星通信系统阈值调平技术

    公开(公告)号:US06771929B1

    公开(公告)日:2004-08-03

    申请号:US09693719

    申请日:2000-10-20

    CPC classification number: H04B7/18517

    Abstract: A method and apparatus for closed-loop power threshold leveling for a satellite communication system is provided. A preferred embodiment of the present invention includes a user earth terminal (UET) (140), a satellite (120) and a network control center (NCC) (110). The satellite (120) periodically determines an average error rate for data bursts transmitted by a plurality of UETs (140) and sends the average error rate as well as the number of transmitted data bursts to the NCC (110). The NCC (110) accumulates average error rates over a period of time, and when a predetermined number of data bursts has been surpassed, determines an uplink power threshold adjustment based on the average error rates. The NCC (110) then transmits the uplink power threshold adjustment to the satellite (120), which adjusts an on-board uplink power level threshold in response to the uplink power threshold adjustment. In systems using multiple beams, the satellite (120) maintains a separate uplink power level threshold for each beam, and determines a separate average error rate for each beam. The NCC (140) then determines and transmits a separate uplink power threshold adjustment for each beam. In systems using multiple coding levels, the satellite (120) determines separate error rates for each coding level, and the NCC (110) determines uplink power offset adjustment corresponding to each coding level. The NCC (110) then delivers the uplink power offset adjustments to the UETs (140), which update their local power offset values stored in memory.

    Abstract translation: 提供了一种用于卫星通信系统的闭环功率阈值调平的方法和装置。 本发明的优选实施例包括用户接地终端(UET)(140),卫星(120)和网络控制中心(NCC)(110)。 卫星(120)周期性地确定由多个UET(140)发送的数据突发的平均错误率,并将平均错误率以及发送的数据突发数量发送到NCC(110)。 NCC(110)在一段时间内累积平均错误率,并且当超过预定数量的数据突发时,基于平均错误率来确定上行链路功率阈值调整。 NCC(110)然后向卫星(120)发送上行链路功率阈值调整,该卫星响应于上行链路功率阈值调整来调整板载上行链路功率电平阈值。 在使用多个波束的系统中,卫星(120)为每个波束保持单独的上行链路功率电平门限,并且确定每个波束的单独的平均误码率。 然后,NCC(140)确定并发送用于每个波束的单独的上行链路功率阈值调整。 在使用多个编码电平的系统中,卫星(120)确定每个编码电平的单独错误率,并且NCC(110)确定对应于每个编码电平的上行链路功率偏移调整。 NCC(110)然后将上行链路功率偏移调整传递给UET(140),UET更新其存储在存储器中的本地功率偏移值。

    Downlink orderwire integrator and separator for use in a satellite based communications system
    6.
    发明授权
    Downlink orderwire integrator and separator for use in a satellite based communications system 有权
    用于基于卫星的通信系统中的下行链路积分器和分离器

    公开(公告)号:US06704297B1

    公开(公告)日:2004-03-09

    申请号:US09644588

    申请日:2000-08-23

    CPC classification number: H04B7/18515

    Abstract: A downlink orderwire integrator (63) and separator (81) for use in a processing satellite (12) and a user terminal (14) in a satellite based communications system (10) is provided having a formatter (64), a cell switch (72) and a cell sieve (80). The formatter (64) generates orderwire cells (54) with each orderwire cell (54) having a header (60) and a body (62). The cell switch (72) receives the orderwire cells (54) from the formatter (64) and traffic cells (56) from at least one uplink (16) and arranges the orderwire cells (54) and the traffic cells (52) in at least one frame (48) to transmit on at least one downlink (18). The frame (48) includes a fixed custom frame portion (42) and a fixed traffic portion (50) that contains both the traffic cells (52) and the orderwire cells (54). The cell sieve (80) receives at least one frame (48) from the at least one downlink (18) and separates the traffic cells (52) and the orderwire cells (54) from the traffic portion (50), such that the formatter (64) and cell switch (72) are positioned within the processing satellite (12) and the cell sieve (80) is positioned within the user terminal (14).

    Abstract translation: 提供了一种用于卫星通信系统(10)中的处理卫星(12)和用户终端(14)中的下行链路顺序集成器(63)和分离器(81),其具有格式器(64),小区开关 72)和细胞筛(80)。 格式器(64)产生有序线电池单元(54),每个单线单元(54)具有头部(60)和主体(62)。 小区交换机(72)从格式器(64)和来自至少一个上行链路(16)的业务信元(56)接收订单线路单元(54),并且将订单线路单元(54)和业务单元(52)布置在 至少一个帧(48)在至少一个下行链路(18)上传输。 帧(48)包括固定的定制帧部分(42)和包含业务信元(52)和有线单元(54)的固定业务部分(50)。 细胞筛(80)从至少一个下行链路(18)接收至少一个帧(48),并将业务信元(52)和有线单元(54)与业务部分(50)分离,使得格式化器 (64)和小区开关(72)位于处理卫星(12)内,并且小区筛(80)位于用户终端(14)内。

    Surface sensing device with optical sensor
    7.
    发明授权
    Surface sensing device with optical sensor 有权
    具有光学传感器的表面感测装置

    公开(公告)号:US06633051B1

    公开(公告)日:2003-10-14

    申请号:US09701699

    申请日:2000-12-01

    CPC classification number: G01B11/007

    Abstract: A surface sensing device includes an articulating head adapted for attachment to the spindle of a measuring machine and having two relatively rotatable parts capable of rotation about two mutually perpendicular axes. The device additionally includes a stylus assembly having a relatively stiff hollow stylus carrier, and a relatively flexible hollow stylus. An optical transducer system is provided within the stylus assembly and comprises a fixed light source which directs a beam of light towards a stylus tip, and a retro-reflective component at the tip which reflects the beam back to a fixed detector. The arrangement is such that lateral displacement of the stylus tip when the tip is in contact with a surface can be measured directly.

    Abstract translation: 表面感测装置包括铰接头,该铰接头适于附接到测量机的心轴上并且具有两个相对可旋转的部件,能够围绕两个相互垂直的轴线旋转。 该装置还包括具有相对刚性的空心触针托架的触针组件和相对柔性的中空触针。 光学传感器系统设置在触针组件内,并且包括将光束引向触针尖端的固定光源以及将光束反射回固定探测器的尖端处的反射反射部件。 这种布置使得当尖端与表面接触时触针尖端的横向位移可以直接测量。

    Adaptive coding scheme for a processing communications satellite
    8.
    发明授权
    Adaptive coding scheme for a processing communications satellite 有权
    一种处理通信卫星的自适应编码方案

    公开(公告)号:US06625776B1

    公开(公告)日:2003-09-23

    申请号:US09163775

    申请日:1998-09-30

    CPC classification number: H04L1/0065 H04L1/0009 H04L1/0015 H04L1/0025

    Abstract: The present invention provides a comprehensive method for controlling, independently, transmit power and coding levels for data transmitted in uplinks and downlinks. One preferred embodiment of the present invention provides a method for adaptive coding of data in a downlink. A data error rate associated with downlink data (e.g., a character error rate provided by a Reed Solomon decoder) is determined. The method, based upon pre-established error rate thresholds, controls the level of coding (e.g., heavy or light) on data in the downlink to achieve a desired data error rate. Heavy coded data is typically associated with a code rate half that of light coded data, and changes between heavy and light coding may be selected using a destination address applied at an originating terminal and interpreted at the satellite.

    Abstract translation: 本发明提供了一种用于独立地控制在上行链路和下行链路中传输的数据的发送功率和编码电平的综合方法。 本发明的一个优选实施例提供了一种用于下行链路中的数据的自适应编码的方法。 确定与下行链路数据相关联的数据错误率(例如,由里德所罗门解码器提供的字符错误率)。 该方法基于预先建立的错误率阈值来控制下行链路中的数据上的编码(例如重或轻)的水平以实现期望的数据错误率。 重编码数据通常与光编码数据的码率相关联,并且可以使用在始发终端处应用并在卫星处解释的目的地地址来选择重和轻编码之间的变化。

    Mitigation of co-channel interference in synchronization bursts in a multi-beam communication system
    9.
    发明授权
    Mitigation of co-channel interference in synchronization bursts in a multi-beam communication system 有权
    在多波束通信系统中同步突发中的同信道干扰的减轻

    公开(公告)号:US06452962B1

    公开(公告)日:2002-09-17

    申请号:US09330441

    申请日:1999-06-11

    CPC classification number: H04B7/18513

    Abstract: In a cellular satellite system such as Astrolink, where same frequency, same polarization (same “color”) signals are used in multiple ground cells, there exists the possibility of interference and false reception of uplink Synchronization Bursts (SB) in systems employing TDMA access of the frequency in question. In such systems, a SB transmitted from one terminal may be received in more than one satellite beam. The reception of the signal from a terminal in an undesired beam (330) is erroneous and may adversely impact the time synchronization (360) of the desired terminal. For example, a system may employ Maximal Length (ML) Pseudo-Noise (PN) sequences (410) for its SBs wherein every beam may use the same sequence. To minimize false reception, the ML PN sequences (410) of each SB may be cyclicly shifted a different amount for each beam to generate sequences (410, 420) having low corsscorrelation with each other. By choosing ML PN codes having low crosscorrelation (410, 420) for the different beams, the interference from undesired beams may be minimized (530).

    Abstract translation: 在诸如Astrolink的蜂窝卫星系统中,在多个接地小区中使用相同的频率,相同的极化(相同的“彩色”)信号,在采用TDMA接入的系统中存在上行同步突发(SB)的干扰和错误接收的可能性 的频率。 在这样的系统中,从一个终端发送的SB可以在多于一个的卫星波束中被接收。 来自不期望的波束(330)中的终端的信号的接收是错误的并且可能不利地影响期望的终端的时间同步(360)。 例如,系统可以为其SB使用最大长度(ML)伪噪声(PN)序列(410),其中每个波束可以使用相同的序列。 为了最小化错误接收,每个SB的ML PN序列(410)可以针对每个波束循环移位不同的量,以产生彼此具有低相关性的序列(410,420)。 通过选择对于不同波束具有低互相关(410,420)的ML PN码,可以最小化不期望波束的干扰(530)。

    Synchronization burst processor for a processing satellite
    10.
    发明授权
    Synchronization burst processor for a processing satellite 有权
    用于处理卫星的同步突发处理器

    公开(公告)号:US06434361B1

    公开(公告)日:2002-08-13

    申请号:US09408261

    申请日:1999-09-29

    CPC classification number: H04L7/042 H04B7/2125

    Abstract: A synchronization burst processor (56) used in a processing satellite (12) in a satellite based communications system (10) is provided with a sync burst memory (72), a first double correlator (74), a second double correlator (76) and a modulus module (78). The sync burst memory (72) stores at least one sync burst (52) transmitted from a terrestrial terminal (14) to the processing satellite (12) where the sync burst (52) is formed from a quadrature pair sample set {p, q}. The first double correlator (74) performs an early correlation and a late correlation of the p samples relative to a sync burst slot (50) to generate an early correlation Pe and a late correlation Pl. The second double correlator (76) performs an early correlation and a late correlation of the q samples relative to the sync burst slot (50) to generate an early correlation Qe and a late correlation Ql. The modulus module (78) determines an early modulus Re and a late modulus Rl from the early correlations Pe and Qe and from the late correlations Pl and Ql. The early modulus Re and the late modulus Rl are used to determine if the sync burst (52) is present in the sync burst slot (50) and if the sync burst (52) is early or late relative to the sync burst slot (50).

    Abstract translation: 在基于卫星的通信系统(10)中的处理卫星(12)中使用的同步突发处理器(56)具有同步脉冲串存储器(72),第一双相关器(74),第二双相关器(76) 和模数模块(78)。 同步突发存储器(72)存储从地面终端(14)发送到处理卫星(12)的至少一个同步脉冲串(52),其中同步脉冲串(52)由正交对采样集{p,q }。 第一双相关器(74)执行相对于同步突发时隙(50)的p个样本的早期相关和后期相关,以产生早期相关Pe和晚期相关性P1。 第二双相关器(76)执行相对于同步脉冲串时隙(50)的q个样本的早期相关和晚期相关,以产生早期相关Qe和晚期相关Q1。 模量模块(78)从早期相关性Pe和Qe以及从晚期相关性P1和Q1确定早期模量Re和后期模量R1。 早期模数Re和延迟模数R1用于确定同步脉冲串(52)是否存在于同步脉冲串时隙(50)中,并且如果同步脉冲串(52)相对于同步脉冲串时隙(50)早或晚 )。

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