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103 records (took 0.026 seconds)

    24.
    发明专利
    未知

    公开(公告)号：DE69804702T2

    公开(公告)日：2005-03-24

    申请号：DE69804702

    申请日：1998-01-29

    Applicant: IBM

    Inventor： BEETESON JOHN ,  KNOX ANDREW RAMSAY

    IPC: H01J31/15 ,  H01J29/46 ,  H01J29/68 ,  H01J31/12 ,  H04N5/68

    Abstract: A display device comprises a cathode means (20) for emitting electrons and a permanent magnet (60) having a two dimensional array of channels (70) extending between opposite poles of the magnet. The magnet generates, in each channel, a magnetic field for forming electrons from the cathode means into an electron beam. A screen (90) receives an electron beam from each channel, the screen having a phosphor coating (80) facing the side of the magnet remote from the cathode, the phosphor coating comprising a plurality of areas, each area being capable of illumination, at least one of the areas being capable of illumination by a plurality of the electron beams. Grid electrode means (40) are disposed between the cathode means and the magnet for controlling flow of electrons from the cathode means into each channel, the grid electrode means comprising a plurality of elements each element corresponding to a different area of the phosphor capable of illumination. First anode means (50) is disposed between the magnet and the screen for accelerating the electron beam towards the screen.

    GPS for workstations
    30.
    发明专利
    GPS for workstations 未知

    公开(公告)号：GB2348558A

    公开(公告)日：2000-10-04

    申请号：GB9907001

    申请日：1999-03-27

    Applicant: IBM

    Inventor： KNOX ANDREW RAMSAY ,  HARPER ROBERT GORDON

    IPC: G01S1/00 ,  G01S5/00 ,  G01S5/14 ,  G01S19/16 ,  G01S19/48

    Abstract: A computer system includes a communication means (e.g. a cellular telephone) for connection to a remote computer and a position determination system (e.g. a GPS) for determining the physical position of the computer system. The communications means receives a request from the remote computer for the computer system to provide the physical position of the computer to the remote computer system via the communications means. The request from the remote computer may originate because the computer system has been stolen or mislaid by a user or it may originate because the computer system has inadvertently been allocated the same network identifier as another computer and the physical location of the computer system needs to be known so that the network identifier can be changed. The computer system may form a network which may be a local area network, an intranet network or an internet network.

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