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:
Dec. 25, 1984
Filed:
Dec. 01, 1983
Pierre R Chevillat, Adliswil, CH;
Hans P Kaser, Thalwil, CH;
Dietrich G Maiwald, Wadenswil, CH;
Gottfried Ungerbock, Langnau, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
In a signal processor computing arrangement comprising an ALU (11) and a multiplier (21), two selectively usable accumulators (37, 41) and gating circuitry (61, 63) are provided to allow alternating computation and accumulation of product terms for two output values with sets of input values that overlap. This saves memory accesses by using the same operand twice for different output values, and requires only one processor cycle per partial term and output value. A specific pipeline multiplier (21) is provided consisting of two partial sections (29, 31) with an intermediate pipeline register (33) to allow applying a second set of input operands while computation of the product of a first set of operands is still in progress.