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:
Aug. 06, 1991
Filed:
Nov. 14, 1989
Shingo Kojima, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An arithmetic processing unit which speeds up arithmetic operations performed up on vectors, matrices or a vector and a matrix, and is coupled to a central processing unit. The arithmetic unit includes a program memory for storing a microprogram corresponding to a macro-instruction code fed from the central processing unit, wherein each macro-instruction is representative of an arithmetic operation. Within the arithmetic unit, operand codes are transferred from an internal register array to operand registers assigned to an augend and an addend, or a multiplicand and a multiplier for calculations carried out by an arithmetic and logic unit. The operand codes for the arithmetic operation are successively transferred to the internal register array prior to the execution of the macro-instruction codes, so that the arithmetic processing unit completes each task without the need for interruptions to receive operands.