发明授权
- 专利标题： Sign extension unit
- 专利标题（中）： 签名扩展单元
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申请号： US09199281申请日： 1998-11-25
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公开(公告)号： US06311199B1公开(公告)日： 2001-10-30
- 发明人: Naoyuki Tamura , Takeshi Yoshida
- 申请人： Naoyuki Tamura , Takeshi Yoshida
- 优先权： JP9-324884 19971126
- 主分类号： G06F500
- IPC分类号： G06F500
摘要：
A sign extension unit has first and second sign extenders to extend a sign bit, i.e., the most significant bit of input data to the higher side of the input data. The input data is divided into n-bit blocks. The first sign extender carries out sign extension based on highest bits of the blocks, and the second sign extender carries out sign extension in each of the blocks based on the highest bits of the respective blocks.
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