发明申请
- 专利标题: Digital signature generation for hardware functional test
- 专利标题(中): 数字签名生成用于硬件功能测试
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申请号: US10897058申请日: 2004-07-22
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公开(公告)号: US20060020860A1公开(公告)日: 2006-01-26
- 发明人: John Tardif , Stephen Au , Eiko Junus
- 申请人: John Tardif , Stephen Au , Eiko Junus
- 申请人地址: US WA Redmond
- 专利权人: Microsoft Corporation
- 当前专利权人: Microsoft Corporation
- 当前专利权人地址: US WA Redmond
- 主分类号: G01R31/28
- IPC分类号: G01R31/28
摘要:
A Multiple Input Shift Register (MISR) is used to generate signatures, based on data from a device under test, in order to validate the proper sequence and content of the data over a defined period of time. The MISR described herein includes the ability to “tag” the signatures for each time period using an incrementing value, and make that tag and the signature readable by a test controller. The MISR has the flexibility to be reset to a known initial state (or otherwise load a seed value) at the beginning of each time period or to continue accumulating signatures without being reset (or using the seed value). Accumulation of signatures over an extended period of time allows a test controller to validate that no errors occurred during a long term test without having to closely monitor the intermediate results.
公开/授权文献
- US07461312B2 Digital signature generation for hardware functional test 公开/授权日:2008-12-02