公开(公告)号：US3751643A

公开(公告)日：1973-08-07

申请号：US3751643D

申请日：1972-05-23

Applicant: IBM

Inventor： DILL F ,  KONNERTH K

IPC: G01B11/06 ,  G06F17/00 ,  G01B9/02 ,  G01B19/08

CPC classification number: G01B11/0633 ,  G01N21/55 ,  G01N21/8422 ,  G01N2021/475 ,  G01N2021/551 ,  G01N2201/0826 ,  G01N2201/0833

Abstract: Measurements of physical attributes such as dielectric film thickness that are susceptible to spectral analysis are accomplished rapidly and accurately by a spectrophotometric system in which a programmed digital computer operating concurrently with the optical scanning means automatically performs the calibrating, normalizing and data reducing functions that otherwise must be carried out as time-consuming human, mechanical or analog electronic operations. The control over the optical data handling operations exercised by the computer eliminates the need for mechanically or electronically adjusting the optical apparatus to meet changing system conditions, whether periodic or aperiodic. Source light is transmitted through a rotating variable-wavelength interference filter which acts during one-half of its cycle to transmit light of varying wavelength through a fiber-optic reference path directly to the optical data acquisition apparatus, while acting in the next half-cycle to transmit light of such varying wavelength indirectly to said data acquisition apparatus through a measurement path. In the present example, where film thickness is the attribute being measured, the measurement path comprises a bifurcated fiber-optic bundle, one branch of which is used to carry the light of variable wavelength to the sample, and the other branch of which carries light reflected from the sample to the aforesaid data acquisition apparatus. A computer program enables light passed through the reference path in one half-cyle to calibrate the system for measuring optical transmission or reflectance in the next half-cycle. Reduction of relative reflectance data to absolute reflectance data (needed for the accurate determination of film thickness) is accomplished by additional computer programs whose algorithms are based upon the discovery that all graphs of absolute reflectance versus wavelength for film samples of a given material having different thicknesses are bounded by a common pair of wave envelopes.

公开(公告)号：US3729731A

公开(公告)日：1973-04-24

申请号：US3729731D

申请日：1971-06-23

Applicant: IBM

Inventor： KONNERTH K ,  LANZA C

IPC: G09G3/29 ,  H01J17/49 ,  G08B5/36

CPC classification number: H01J17/492 ,  G09G3/29

Abstract: A gas panel display system produces a moving display as a result of movement of at least one set of conductors. A first set of parallel conductors aligned parallel to the direction of motion of the display image is mounted behind a display window in a gas tight display housing which contains an ionizeable gas. A second perpendicular set of parallel conductors insulated from the ionizeable gas is mounted on a moving belt which carries the display image past the window. Information is written into the display by applying ignition pulses to a set of writing electrodes aligned along a line parallel to the conductors of the second set. The ignition pulses ionize the gas between the writing electrodes and the second conductors, thereby creating activated display points along the second conductors. The information written into the activated display points is made visible by applying a sustaining voltage between the conductor sets to sustain a glow discharge in the ionizeable gas at the activated points. An erase roller located just before the writing electrodes erases any remaining, previously written, information.

Abstract translation: 气体面板显示系统由于至少一组导体的移动而产生移动显示。 平行于显示图像的运动方向排列的第一组平行导体安装在包含可电离气体的气密显示器壳体中的显示窗后面。 与可离子化气体绝缘的第二垂直组平行导体安装在携带显示图像经过窗口的移动带上。 通过将点火脉冲施加到沿着与第二组的导体平行的线对准的一组写入电极而将信息写入显示器。 点火脉冲使写入电极和第二导体之间的气体电离，从而沿着第二导体产生激活的显示点。 通过在导体组之间施加维持电压来维持写入激活的显示点的信息，以维持激活点处的可离子化气体中的辉光放电。 位于写入电极之前的擦除辊擦除任何剩余的先前写入的信息。