Method and apparatus for measuring FM frequency deviation
    42.
    发明授权
    Method and apparatus for measuring FM frequency deviation 失效
    用于测量FM频率偏差的方法和装置

    公开(公告)号:US5771443A

    公开(公告)日:1998-06-23

    申请号:US530717

    申请日:1995-09-15

    摘要: An FM input signal V(t) is A/D converted, then an in-phase component I and a quadrature component Q are obtained. Then, an instantaneous phase .theta.=tan.sup.-1 (Q/I) of the V(t) is obtained and also an instantaneous frequency of the modulated signal f.sub.a (t)=(1/2.pi.)d.theta./dt is obtained. Alternately, f.sub.a (t)=(IdQ/dt-QdI/dt)/{2.pi.(I.sup.2 +Q.sup.2)} is directly obtained from I and Q. A positive peak P+ and a negative peak P- of the obtained f.sub.a (t) is detected to display the average value of these as a frequency deviation.

    摘要翻译: FM输入信号V(t)被A / D转换,然后获得同相分量I和正交分量Q。 然后,获得V(t)的瞬时相位θ= tan-1(Q / I),并且调制信号的瞬时频率fa(t)=(+ E,fra 1/2 + EE pi)d theta / dt。 或者,从I和Q直接获得fa(t)=(IdQ / dt-QdI / dt)/ {2 pi(I2 + Q2)}。获得的fa(t)的正峰值P +和负峰值P- )被检测为将它们的平均值显示为频率偏差。

    Projector
    43.
    发明授权
    Projector 失效
    投影机

    公开(公告)号:US5676441A

    公开(公告)日:1997-10-14

    申请号:US692517

    申请日:1996-08-05

    申请人: Hitoshi Takahashi

    发明人: Hitoshi Takahashi

    摘要: A projector includes a plurality of cabinets arranged in rows and columns and each of the cabinets has a screen located at its front end with a plurality of the screens being adapted to collectively form a large display screen on which an image is formed. The cabinet further includes a screen a screen frame for holding edges of the screen, a screen holder, which is secured to the screen by the screen frame, a screen bracket for mounting the screen holder to the cabinet, a mechanism for securing the screen holder to the screen bracket and permitting disconnection of the screen holder from the screen bracket when the screen holder is pushed rearwardly toward the screen bracket, and a slide mechanism mounted on one side of the screen bracket and the screen holder and adapted to permit reciprocal movement of the screen holder relative to the cabinet when the screen holder is disconnected from the screen bracket.

    摘要翻译: 一种投影仪包括以行和列布置的多个机柜,并且每个机柜具有位于其前端的屏幕,多个屏幕适于共同形成形成图像的大型显示屏幕。 该橱柜还包括屏幕,用于保持屏幕边缘的屏幕框架,通过屏幕框架固定到屏幕的屏幕保持器,用于将屏幕保持器安装到机壳的屏幕支架,用于固定屏幕保持架的机构 当屏幕保持器向后推动到屏幕支架时,允许屏幕保持器与屏幕支架断开;以及滑动机构,其安装在屏幕支架和屏幕保持器的一侧,并且适于允许屏幕支架相互移动, 当屏幕支架与屏幕支架断开时,屏幕支架相对于机柜。

    Waste paper processing system
    45.
    发明授权

    公开(公告)号:US5538193A

    公开(公告)日:1996-07-23

    申请号:US453876

    申请日:1995-05-30

    摘要: A waste paper processing system includes an upper shredding portion and a lower compressing portion. The shredding portion includes to horizontally parallel shafts mounting thereon a plurality of circular blades. The shafts are rotated to spin outwardly of a space between the shafts from a paper feeding direction. Presser arms are provided for retaining paper from above during shredding and stopper arms and a filter portion are provided below the blades to assure the paper is shredded sufficiently. After shredding the paper falls into a hopper and is introduced via a rotor to the compression portion. In the compression portion a screw is rotated for urging the shredded paper into a compression tube the tube as a narrower portion at the lower end for assuring sufficient compression of the shredded paper. In addition, water is added to the shredded paper in the upper side of the compression tube for binding the shredded paper together as pulp. A sensor arrangement is provided for assuring sufficient water is introduced to the shredded paper automatically during compression operation. After the pulp is output from the compression portion, a conveyer arrangement is provided for loading the pulp into a tray or bag to facilitate easy disposal or recycling.

    Double-gated integrating scheme for electron beam tester
    46.
    发明授权
    Double-gated integrating scheme for electron beam tester 失效
    电子束测试仪双栅集成方案

    公开(公告)号:US5210487A

    公开(公告)日:1993-05-11

    申请号:US710768

    申请日:1991-06-04

    CPC分类号: G01R31/305

    摘要: A surface is probed with a pulsed electron beam and secondary electrons are detected to produce a detector signal. First portions of the detector signal are substantially dependent on the voltage of the surface being probed, while second portions of the detector signal are substantially independent of the voltage of the surface being probed. In general, the first and second portions of the detector signal include unwanted noise caused by low-level sampling due to beam leakage and/or by scintillator afterglow in the secondary-electron detector. The detector signal is sampled during the first signal portions and is sampled during the second signal portions. The sampled first signal portions are combined with the complement of the sampled second signal portions to produce a measured voltage signal representing voltage of the conductor. In a preferred sampling scheme, alternate electron-beam sampling pulses are held-off. A first gate samples the secondary-electron detector signal when sampling pulses are not held off. A second gate samples the secondary-electron detector signal when sampling pulses are held off, and these samples are inverted. The samples from the first gate are combined with the inverted samples from the second gate to substantially cancel unwanted background noise caused by beam leakage and/or scintillator afterglow after sufficient integration.

    Welt system for automotive vehicle
    48.
    发明授权
    Welt system for automotive vehicle 失效
    汽车维修系统

    公开(公告)号:US5147105A

    公开(公告)日:1992-09-15

    申请号:US751154

    申请日:1991-08-28

    摘要: A weatherstrip system disposed on a body flange of a vehicle at a location facing the door system of the vehicle to establish a seal between the body flange and the door system when the door system is closed comprises a frame member formed of a resin material adapted to clamp the flange of the frame member, an additional layer formed of co-extrudable material laid on a surface of the frame member, and a sealing member joined to the surface of the additional layer for contacting the door system for establishing the sealing between the body flange and the door system. The additional layer is co-extruded with the frame member. An edge line of the sealing member is presented on the additional layer and is colored with the color of the layer to enhance the outer appearance of the edge line.

    摘要翻译: 一种挡风雨系统,其在面向车辆门系统的位置处设置在车辆的车身法兰上,以在车门系统关闭时在车身法兰和车门系统之间建立密封,包括由树脂材料形成的框架构件,该框架构件适于 夹紧框架构件的凸缘,由布置在框架构件的表面上的可共挤出材料形成的附加层和连接到附加层的表面的密封构件,用于接触门系统以建立身体之间的密封 法兰和门系统。 附加层与框架构件共挤出。 密封构件的边缘线呈现在附加层上并用层的颜色着色以增强边缘线的外观。

    Paper sheet processing apparatus
    49.
    发明授权
    Paper sheet processing apparatus 失效
    纸张处理装置

    公开(公告)号:US5012932A

    公开(公告)日:1991-05-07

    申请号:US227924

    申请日:1988-08-03

    IPC分类号: G07D11/00

    CPC分类号: G07D11/0084

    摘要: Uninspected bundles of paper sheets are supplied to each of a plurality of pre-processors in units of bundles. Each pre-processor removes a band from the uninspected bundle, prints a serial number in association with the received paper sheets on the band, and holds the band. A number of reusable paper sheets from which the band is removed are counted by and stored in a corresponding inspection device. Each inspection device stores the serial number printed on the band by the preprocessor. In each inspection device, the paper sheets to be re-inspected are sorted by a separator card in units of bundles and stored as rejectable notes in a rejectable note cassette. A center console receives data such as a count result, band number, cassette number, card number, and the like, from each inspection device, and sequentially stores these data in units of inspection devices. When rejectable notes in units of bundles taken out from the cassette are inserted, a rejectable note processor fetches data such as the count result, band number, cassette number, card number, and the like from the center console, and performs discrimination of authenticity, detection of denominations, and counting and collation processing of the received rejectable notes.

    Read-only memory device
    50.
    发明授权
    Read-only memory device 失效
    只读存储器件

    公开(公告)号:US4426686A

    公开(公告)日:1984-01-17

    申请号:US261964

    申请日:1981-05-08

    IPC分类号: G11C17/00 G11C17/12 G11C11/40

    CPC分类号: G11C17/12

    摘要: A read-only memory device in which the presence or absence of a MOS transistor in a memory cell located at each intersection between word lines and bit lines is disclosed. In this device, when data belonging to one word line is written into the memory cells, the original data or the inverted data of the original data is written. The determination whether or not the data is inverted is performed in accordance with the number of data "0" or "1" belonging to each word line.

    摘要翻译: 公开了一种只读存储器件,其中位于字线和位线之间的每个交点处的存储单元中存在或不存在MOS晶体管。 在该装置中,当属于一个字线的数据被写入存储单元时,原始数据或原始数据的反相数据被写入。 根据属于每个字线的数据“0”或“1”的数量来执行数据是否被反转的确定。