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. 08, 2001
Filed:
Nov. 10, 1998
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A bus for data transmission, bus switches for slicing the bus, and four arithmetic blocks are provided to perform a series of fixed-point arithmetic operations. Each of the four arithmetic blocks has a plurality of digit-serial arithmetic units, namely a multiplier, an adder/subtracter, and a shifter. Each of the digit-serial arithmetic units has the functions of receiving a plurality of input digits representative of an input operand and a digit position indicator of each of the input digits and providing a plurality of result digits representative of an arithmetic result of the input operand and a digit position indicator of each of the result digits to any other one of the plurality of digit-serial arithmetic units. Particularly, the digit-serial adder/subtracter contains therein a selector for input switching so that the digit-serial adder/subtracter can perform butterfly arithmetic.