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. 16, 1999
Filed:
Feb. 04, 1998
Gene M Amdahl, Atherton, CA (US);
Other;
Abstract
A new class of shift registers that shift the contents of a 2.sup.n bit length register up to 2.sup.n -1 positions in n cycles. Shift registers according to the present invention can be constructed to shift left, shift right, or to shift either left or right. A general implementation of this class of shift registers comprises the following hardware: 2.sup.n D flip-flops or D latches for the data register positions of the shift register; logic for each of the 2.sup.n positions to determine the input value to which the position should take on at each of the n cycles; an n bit shift count register to store a value indicating the number of positions to shift; control lines specifying whether to shift left or right; n control lines which are sequentially raised for one cycle to select a bit in the shift count register for the current cycle beginning with the most significant bit and continuing sequentially to the least significant bit; and a clock to set the selected input data to each position in the shift register.