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38 records (took 0.019 seconds)

    33.
    发明专利
    未知

    公开(公告)号：DE3780977T2

    公开(公告)日：1993-03-11

    申请号：DE3780977

    申请日：1987-01-02

    Applicant: IBM

    Inventor： GARWIN RICHARD LAWRENCE ,  LEVINE JAMES LEWIS

    IPC: G06F3/041 ,  G06F3/033 ,  G06F3/048 ,  G06K11/06 ,  G06K11/16

    Abstract: The calibration of a force sensing type data input device through the use of at least one correction developed by minimization of differences between an actual location of a pattern of test forces and a calculated location of the test forces where the calculation is on the basis of the effect of the test forces on the equilibrium of the device.

    ALIGNMENT OR CORRECTION OF ENERGY BEAM TYPE DISPLAYS
    35.
    发明专利
    ALIGNMENT OR CORRECTION OF ENERGY BEAM TYPE DISPLAYS 未知

    公开(公告)号：DE3064521D1

    公开(公告)日：1983-09-15

    申请号：DE3064521

    申请日：1980-04-25

    Applicant: IBM

    Inventor： GARWIN RICHARD LAWRENCE

    IPC: H01J9/44 ,  H04N17/04 ,  H04N5/13

    Abstract: Multiple energy beams in a display, such as a color TV tube or computer terminal, can be accurately aligned or corrected using information acquired with a photodetector having a single sensitive spot which is precisely placed on the viewing surface of the display and the display unit, in turn, is equipped to be able independently to disable, to position, and to vary the intensity of each beam.

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