The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1995
Filed:
May. 26, 1994
Motorola, Inc., Schaumburg, IL (US);
Abstract
A combined multiplier/shifter (150) uses an existing high-speed multiplier to perform both multiplies and programmable left and right shifts without a dedicated high-speed shifter. A shift decoder (160) used in a shift mode provides first recoded signals according to a shift count and a shift direction. A recoder (161) recodes a multiplier input in a multiply mode to provide second recoded signals. A multiplier array (163) receives either a multiplicand or a shift operand at its multiplicand input, and uses either the first or second recoded signals selectively according to the mode. An output of the multiplier array (163) is either a product in the multiply mode or a first shift result in the shift mode. An output shifter (157) selectively adjusts the first shift result according to the shift direction to provide a second, final shift result.