发明授权
US5930814A Computer system and method for synthesizing a filter circuit for
filtering out addresses greater than a maximum address
失效
用于合成滤波器电路的计算机系统和方法,用于滤除大于最大地址的地址
- 专利标题: Computer system and method for synthesizing a filter circuit for filtering out addresses greater than a maximum address
- 专利标题(中): 用于合成滤波器电路的计算机系统和方法,用于滤除大于最大地址的地址
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申请号: US697968申请日: 1996-09-03
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公开(公告)号: US5930814A公开(公告)日: 1999-07-27
- 发明人: Yervant David Lepejian , Hrant Marandjian , Hovhannes Ghukasyan , Lawrence Kraus
- 申请人: Yervant David Lepejian , Hrant Marandjian , Hovhannes Ghukasyan , Lawrence Kraus
- 申请人地址: CA Fremont
- 专利权人: Credence Systems Corporation
- 当前专利权人: Credence Systems Corporation
- 当前专利权人地址: CA Fremont
- 主分类号: G11C29/18
- IPC分类号: G11C29/18 ; G11C29/26 ; G06F12/00 ; G11C29/00
摘要:
A method and circuit are provided for generating a minimum-sized address filter to detect when the address space of an embedded memory having a smaller address space than another larger embedded memory is being exceeded. The method includes decomposing a maximum address into alternating sequences of consecutive binary ones (1's) and zeros (0's), discarding a final sequence if it contains binary 1's, and generating a filter circuit from a filter function formed from the alternating sequences of consecutive binary 1's and 0's. A built-in self test (BIST) circuit incorporating the address filter provides the ability to test a plurality of embedded memories at full speed in parallel. A computer system including a computer program for generating the filter circuit may also be provided.
公开/授权文献
- US5228611A Container holder 公开/授权日:1993-07-20
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