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:
Jun. 08, 1976
Filed:
Jan. 17, 1975
Applicant:
Inventor:
Tich T Dao, Cupertino, CA (US);
Assignee:
Signetics Corporation, Sunnyvale, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
235164 ; 3401725 ;
Abstract
A parallel shifter consists of a plurality of AND gates arranged in a skewed configuration to simulate the partial products of a multiplication of the binary number to be shifted with a second binary number representing 2.sup.N where N is the number of shift steps. Pseudo multiplication may be accomplished merely by ORing the outputs of the AND gates of any given binary weight since only one partial product of that weight will be non-zero. Left or right shift is accomplished by selection of the most significant or least significant half of the product. Rotation is accomplished by merging of the two halves.