公开(公告)号：US11379624B2

公开(公告)日：2022-07-05

申请号：US16496392

申请日：2018-03-06

申请人： BLUESKYTEC LTD

发明人： Christopher Mobley

IPC分类号： G06F21/87 ,  G01R31/317 ,  G06F7/58 ,  G08B13/12 ,  G08B13/181

摘要： This invention relates to an anti-tamper assembly for a circuit board comprising one or more electronic components, the assembly comprising: a container having side walls, a first, closed end and a second, opposing, open end, the container being configured to be mounted on said circuit board at said open end, over at least one of said electrical components, to form, in use, a sealed cavity around said at least one of said electrical components; a source of radioactive particles mounted within said container; an image sensor for capturing image frames within said sealed cavity, in use, wherein said image sensor comprises a detector region defining an array of pixels; and a processor for receiving said captured image frames, monitoring said image frames for changes in the statistical distribution of active pixels and, in the event that statistical distribution of active pixels indicates the presence of a feature in an image frame, generating a tamper alert.

公开(公告)号：US12067156B2

公开(公告)日：2024-08-20

申请号：US17276541

申请日：2019-09-16

申请人： BLUESKYTEC LTD

发明人： Christopher Mobley

IPC分类号： G06F21/00 ,  G01T7/12 ,  G06F21/86 ,  G06F21/87 ,  G08B13/14 ,  H04L9/32 ,  H05K1/02

CPC分类号： G06F21/87 ,  G01T7/12 ,  G06F21/86 ,  G08B13/1481 ,  H04L9/3278 ,  H05K1/0275 ,  H05K2201/10121

摘要： An anti-tamper assembly is disclosed for a circuit board which comprises one or more electronic components. The assembly comprises a container having side walls, a first closed end and a second, opposing open end, the container being configured to be mounted on said circuit board at said open end, over at least one of the electronic components to form, in use, a sealed cavity around said at least one of said electronic components. The assembly further comprises a source of radioactive particles mounted within the container, an image sensor for capturing image frames within said sealed cavity, in use. The image sensor comprises a detector region defining an array of pixels, a screen member located, in use, within the cavity between the radioactive source and the detector, said screen member having at least one aperture, and a processor for retrieving said captured image frames, monitoring said image frames for changes in the statistical distribution of active pixels and, in the event that statistical distribution of active pixels indicates the presence of a feature in an image frame, generating a tamper alert.

公开(公告)号：US20220035959A1

公开(公告)日：2022-02-03

申请号：US17276541

申请日：2019-09-16

申请人： BLUESKYTEC LTD.

发明人： Christopher Mobley

IPC分类号： G06F21/87 ,  H05K1/02 ,  G08B13/14 ,  G01T7/12

摘要： An anti-tamper assembly is disclosed for a circuit board which comprises one or more electronic components. The assembly comprises a container having side walls, a first closed end and a second, opposing open end, the container being configured to be mounted on said circuit board at said open end, over at least one of the electronic components to form, in use, a sealed cavity around said at least one of said electronic components. The assembly further comprises a source of radioactive particles mounted within the container, an image sensor for capturing image frames within said sealed cavity, in use. The image sensor comprises a detector region defining an array of pixels, a screen member located, in use, within the cavity between the radioactive source and the detector, said screen member having at least one aperture, and a processor for retrieving said captured image frames, monitoring said image frames for changes in the statistical distribution of active pixels and, in the event that statistical distribution of active pixels indicates the presence of a feature in an image frame, generating a tamper alert.