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:
Nov. 07, 1995
Filed:
Feb. 14, 1994
Michael C Seckora, Gales Creek, OR (US);
Tektronix, Inc., Wilsonville, OR (US);
Abstract
A barrel shifter or multiply/divide integrated circuit (IC) structure includes a plurality of stages in series. The number of stages is a function of the number of bits in an input digital data word, and each stage in sequence provides for a different power of two rotary or multiply/divide shift of the digital data word at the input if selected. A multiplexer in each stage selects as an output either the shifted digital data word or the input digital data word for output to the next stage according to a shift amount select command. At the input and output of the series of stages an additional reversal multiplexer selects in response to a shift direction command either the digital data word or a reversed version of the digital data word, which determines the effective direction of the shift in the stages. Logic may be included in each stage to determine whether the shift operation is a rotary or multiply/divide shift operation.