Patent Number: 6,311,199

Title: Sign extension unit

Abstract: A sign extension unit has first and second sign extenders to extend a signbit, i.e., the most significant bit of input data to the higher side ofthe input data. The input data is divided into n-bit blocks. The firstsign extender carries out sign extension based on highest bits of theblocks, and the second sign extender carries out sign extension in each ofthe blocks based on the highest bits of the respective blocks.

Inventors: Tamura; Naoyuki (Tokyo, JP), Yoshida; Takeshi (Tokyo, JP)


International Classification:

Expiration Date: 10/32013