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公开(公告)号：US3909784A
公开(公告)日：1975-09-30
申请号：US37605673
申请日：1973-07-02
Applicant: BELL & HOWELL CO
Inventor： RAYMOND WILLIAM R , STEFANSSON RAFN
CPC classification number: G11B20/18
Abstract: Information is expressed in the form of pulses which are arranged in accordance with the equation: Mn xn+T wherein: n is the code number, M is the quantity of pulses per code number, T is the negative tolerance of pulse count, and x is the sum of one plus the positive tolerance and the negative tolerance of pulse count.
Abstract translation: 信息以脉冲的形式表示，其按照以下等式排列：Mn = xn + T其中：n是码数，M是每个码数的脉冲数，T是脉冲计数的负容差，以及 x是一个加上正公差和脉冲计数负公差的总和。
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公开(公告)号：US3673602A
公开(公告)日：1972-06-27
申请号：US3673602D
申请日：1970-07-30
Applicant: BELL & HOWELL CO
Inventor： STEFANSSON RAFN , BEANSTON ROBERT A
CPC classification number: G01D15/14
Abstract: In a recording oscillograph, apparatus for automatically recording on the oscillograph paper, and simultaneously with the recording thereon of one or more galvanometer traces, an indication of a selected control setting of an adjustable operative condition of the oscillograph. In an oscillograph which is provided with apparatus for applying timing lines on the moving paper, a preferred embodiment includes transparent indicia corresponding to various timing line intervals serially arranged in an opaque member, and a shutter member is driven in a light path synchronously with the driven opaque member such that only one of the timing indicia is projected onto the moving paper during a revolution of the opaque member, while preventing the projection of the others of the timing indicia during that cycle. Means responsively connected to the timing line control means automatically adjusts the phase relationship of the rotating shutter with respect to the rotating opaque member, so that the projected one of the timing indicia corresponds to the selected setting of the timing line control means.
Abstract translation: 在记录示波器中，用于在示波器纸上自动记录并与其上记录有一个或多个电流计迹线的装置一起显示示波器的可调整操作状态的所选择的控制设置。 在提供有用于在移动纸张上施加定时线的装置的示波器中，优选实施例包括对应于串联地布置在不透明构件中的各种定时线间隔的透明标记，并且挡板构件在与驱动的同步的光路中驱动 不透明构件，使得在不透明构件的旋转期间只有一个定时标记被投影到移动的纸上，同时防止在该周期期间其他时间标记的投影。 响应于连接到定时线控制装置的装置自动调节旋转快门相对于旋转不透明部件的相位关系，使得定时标记中的投影的一个对应于定时线控制装置的选定设置。
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公开(公告)号：US3646567A
公开(公告)日：1972-02-29
申请号：US3646567D
申请日：1970-06-01
Applicant: BELL & HOWELL CO
Inventor： STEFANSSON RAFN
CPC classification number: G01D13/20
Abstract: Apparatus for projecting one of at least two grid line patterns onto a moving oscillographic photosensitive record medium, without removing an included grid screen from the oscillograph. The opaque grid screen is characterized by a first plurality of transparent indicia arranged such that the light projected therethrough onto the moving surface produces thereon a first plurality of line images in predetermined spaced relation, in addition to a second plurality of transparent indicia arranged such that the light projected therethrough onto the moving surface produces thereon a second plurality of line images a predetermined number of which are disposed between successive ones of the line images of the first plurality and in predetermined spaced relation therewith. Shutter means associated with the opaque screen is provided for alternatively preventing and permitting light to be projected through the second plurality of indicia onto the moving surface, thereby permitting either the line images of both pluralities, or the line images of only the first plurality, to be recorded on the photosensitive surface.
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