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:
May. 16, 1995
Filed:
Jan. 26, 1994
Sau-Gee Chen, Hsinchu, TW;
Chieh-Chih Li, Chia-I, TW;
United Microelectronics Corp., Hsinchu City, TW;
Abstract
A fast divider is disclosed in the present invention. It utilizes a division method which uses a smaller quotient digit set of {-1, 1} than {-1, 0, 1} that used by known algorithms, therefore accelerates the speed of calculation. Partial remainders are computed with the signs of remainders decided independently and in parallel. By taking the absolute values of the remainders, the remainders are successively subtracted without the need of knowing the signs of remainders, while signs of the remainders can be decided in parallel and independently at the same time. The method adopts non-restoring division operation and CSA (carry save adder) type of operation for fast subtraction. The method is also an on-line algorithm that facilitates highly pipelined operations while it is much simpler than the existing on-line algorithms.