45.
    发明专利
    未知

    公开(公告)号:FR2823901B1

    公开(公告)日:2006-05-12

    申请号:FR0204923

    申请日:2002-04-19

    Abstract: A method for testing semiconductor memory modules in which data are stored in banks with an addressable matrix structure containing rows and columns. Defect addresses of the defect locations in the banks are transmitted in compressed form to an external test device. The rows and/or the columns are subdivided into regions. The defects occurring in the respective region are counted row by row and/or column by column. The number of defects in each region is compared row by row and/or column by column with a threshold value, and the comparison results are transmitted as additional information row by row and/or column by column together with the defect addresses to a test device.

    47.
    发明专利
    未知

    公开(公告)号:DE10136703C1

    公开(公告)日:2003-04-17

    申请号:DE10136703

    申请日:2001-07-27

    Abstract: A system for testing an integrated circuit at a plurality of locations with a plurality of test modes includes a sequence of test-mode storage devices, each of which has an input and an output. The sequence includes at least first and second test-mode storage devices located at corresponding first and second locations on the integrated circuit and configured to store first and second test modes. The first test-mode storage device is configured to perform a shift operation by providing the first test-mode at its output. The second test-mode storage device has its input connected to the output of the first test-mode storage device. This second device is configured to perform the shift operation by receiving, at its input, the first test mode and providing, at its output, the second test-mode.

    50.
    发明专利
    未知

    公开(公告)号:DE10117614A1

    公开(公告)日:2002-10-17

    申请号:DE10117614

    申请日:2001-04-07

    Abstract: A method for operating a semiconductor memory at a data transmission rate which is twice as fast. According to the invention, data read access and data write access is divided up into two memories. A first memory bank is operated at one speed which is offset by a factor of 0.5 in relation to the operating speed of the second memory bank and the data partial flows are combined at the output of the two memory banks to form a data flow at a frequency which is multiplied by two.

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