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    PERSONAL COMPUTER SYSTEM WITH SECURITY FEATURES
    2.
    发明专利
    PERSONAL COMPUTER SYSTEM WITH SECURITY FEATURES 未知

    公开(公告)号：HK1018826A1

    公开(公告)日：2000-01-07

    申请号：HK99103889

    申请日：1999-09-08

    Applicant: IBM

    Inventor： BLACKLEDGE JOHN WILEY JR ,  CLARKE GRANT LEACH JR ,  DAYAN RICHARD ALAN ,  LE KIMTHANH DO ,  MCCOURT PATRICK EDWARD ,  MITTELSTEDT MATTHEW TODD ,  MOELLER DENNIS LEE ,  NEWMAN PALMER EUGENE ,  RANDALL DAVE LEE ,  YODER JOANNA BERGER

    IPC: G06F9/06 ,  G06F11/00 ,  G06F12/14 ,  G06F21/00 ,  G06F21/06 ,  G06F21/22 ,  G06F21/24 ,  G06F

    Abstract: This invention relates to personal computer systems and, more particularly, to such a system having security features enabling control over access to data retained in such a system. In particular, a personal computer system in accordance with this invention has a normally closed enclosure, an erasable memory element for selective activation to active and inactive states and for receiving and storing a privileged access password when in the active state, an option switch operatively connected with the erasable memory element for setting the erasable memory element to the active and inactive states, a tamper detection switch operatively connected with the erasable memory element for detecting opening of the enclosure and for clearing any stored privileged access password from the erasable memory element in response to any switching of the tamper switch, and a system processor operatively connected with the erasable memory element for controlling access to at least certain levels of data stored within the system by distinguishing between the active and inactive states of the memory element and between entry and non-entry of any stored privileged access password. In the presently preferred form of the invention, two non-volatile erasable memory elements are provided, one an EEPROM and the other battery backed CMOS RAM.

    PERSONAL COMPUTER WITH ACCESS PASSWORD IN ACTIVATED ERASABLE MEMORY
    7.
    发明专利
    PERSONAL COMPUTER WITH ACCESS PASSWORD IN ACTIVATED ERASABLE MEMORY 未知

    公开(公告)号：NZ245756A

    公开(公告)日：1995-12-21

    申请号：NZ24575693

    申请日：1993-01-26

    Applicant: IBM

    Inventor： BLACKLEDGE JOHN WILEY ,  CLARKE GRANT LEACH ,  DAYAN RICHARD ALAN ,  LE KIMTHANH DO ,  MCCOURT PATRICK EDWARD ,  MITTELSTEDT MATTHEW TODD ,  MOELLER DENNIS LEE ,  NEWMAN PALMER EUGENE ,  RANDALL DAVE LEE ,  YODER JOANNA BERGER

    IPC: G06F9/06 ,  G06F12/14 ,  G06F21/00 ,  G06F11/00 ,  G06F21/06 ,  G06F21/22 ,  G06F21/24 ,  G06F1/16

    Abstract: This invention relates to personal computer systems and, more particularly, to such a system having security features enabling control over access to data retained in such a system. In particular, a personal computer system in accordance with this invention has a normally closed enclosure, an erasable memory element for selective activation to active and inactive states and for receiving and storing a privileged access password when in the active state, an option switch operatively connected with the erasable memory element for setting the erasable memory element to the active and inactive states, a tamper detection switch operatively connected with the erasable memory element for detecting opening of the enclosure and for clearing any stored privileged access password from the erasable memory element in response to any switching of the tamper switch, and a system processor operatively connected with the erasable memory element for controlling access to at least certain levels of data stored within the system by distinguishing between the active and inactive states of the memory element and between entry and non-entry of any stored privileged access password. In the presently preferred form of the invention, two non-volatile erasable memory elements are provided, one an EEPROM and the other battery backed CMOS RAM.

    Personal computer system with security features and method
    8.
    发明专利
    Personal computer system with security features and method 未知

    公开(公告)号：AU663551B2

    公开(公告)日：1995-10-12

    申请号：AU3201993

    申请日：1993-01-25

    Applicant: IBM

    Inventor： BLACKLEDGE JOHN WILEY JR ,  CLARKE GRANT LEACH JR ,  DAYAN RICHARD ALAN ,  LE KIMTHANH DO ,  MCCOURT PATRICK EDWARD ,  MITTELSTEDT MATTHEW TODD ,  MOELLER DENNIS LEE ,  NEWMAN PALMER EUGENE ,  RANDALL DAVE LEE ,  YODER JOANNA BERGER

    IPC: G06F11/00 ,  G06F9/06 ,  G06F12/14 ,  G06F21/00 ,  G06F21/06 ,  G06F21/22 ,  G06F21/24

    Abstract: This invention relates to personal computer systems and, more particularly, to such a system having security features enabling control over access to data retained in such a system. In particular, a personal computer system in accordance with this invention has a normally closed enclosure, an erasable memory element for selective activation to active and inactive states and for receiving and storing a privileged access password when in the active state, an option switch operatively connected with the erasable memory element for setting the erasable memory element to the active and inactive states, a tamper detection switch operatively connected with the erasable memory element for detecting opening of the enclosure and for clearing any stored privileged access password from the erasable memory element in response to any switching of the tamper switch, and a system processor operatively connected with the erasable memory element for controlling access to at least certain levels of data stored within the system by distinguishing between the active and inactive states of the memory element and between entry and non-entry of any stored privileged access password. In the presently preferred form of the invention, two non-volatile erasable memory elements are provided, one an EEPROM and the other battery backed CMOS RAM.

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