Global Patent Index - EP 2140367 A1

EP 2140367 A1 20100106 - IMPROVEMENTS RELATING TO SIMD PARALLEL PROCESSORS

Title (en)

IMPROVEMENTS RELATING TO SIMD PARALLEL PROCESSORS

Title (de)

VERBESSERUNGEN IM BEZUG AUF SIMD-PARALLELPROZESSOREN

Title (fr)

PERFECTIONNEMENTS PORTANT SUR DES PROCESSEURS PARALLÈLES SIMD

Publication

EP 2140367 A1 20100106 (EN)

Application

EP 08718975 A 20080402

Priority

  • GB 2008001167 W 20080402
  • GB 0706411 A 20070402

Abstract (en)

[origin: WO2008120001A1] A processing element of a Single Instruction Multiple Data parallel processing array processor is described where the processing element is configured to implement two bits at-a-time arithmetic operations local to the processing element. The processing element comprises: a plurality of operand registers arranged to store operands and results for arithmetic operations; an arithmetic logic unit for effecting the two bits at-a-time logical arithmetic operations including a Booth's algorithm mathematical operation, where subgroups of a multiplier are used to determine multiples (summands) of an operand to be summed together to determine the multiplication result; and variation means for enabling local conditional variation of the mathematical operation; the variation means comprising a Booth's algorithm delay register which provides the least significant bit of a current multiplier subgroup, the register being arranged to read the most significant bit of the current subgroup and to use this as the least significant bit of the next subgroup for the next summand determination operation.

IPC 8 full level

G06F 15/80 (2006.01); G06F 7/525 (2006.01); G06F 7/533 (2006.01)

CPC (source: EP)

G06F 7/5338 (2013.01); G06F 7/525 (2013.01)

Citation (examination)

  • BEHROOZ PARHAMI: "Computer Arithmetic Algorithms and Hardware Designs - excerpt Chapter 10", 31 December 2000 (2000-12-31), NEW YORK, pages 157 - 161, ISBN: 978-0-19-512583-2, [retrieved on 20130506]
  • See also references of WO 2008120001A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2008120001 A1 20081009; EP 2140367 A1 20100106; GB 0706411 D0 20070509

DOCDB simple family (application)

GB 2008001167 W 20080402; EP 08718975 A 20080402; GB 0706411 A 20070402