WO2004102339A3 - Removal of acute angles in a design layout - Google Patents

Removal of acute angles in a design layout Download PDF

Info

Publication number
WO2004102339A3
WO2004102339A3 PCT/US2004/014380 US2004014380W WO2004102339A3 WO 2004102339 A3 WO2004102339 A3 WO 2004102339A3 US 2004014380 W US2004014380 W US 2004014380W WO 2004102339 A3 WO2004102339 A3 WO 2004102339A3
Authority
WO
WIPO (PCT)
Prior art keywords
design layout
segments
removal
acute angles
route
Prior art date
Application number
PCT/US2004/014380
Other languages
French (fr)
Other versions
WO2004102339A2 (en
Inventor
Etienne Jacques
Tom Kronmiller
Original Assignee
Cadence Design Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/443,315 external-priority patent/US7065731B2/en
Priority claimed from US10/443,811 external-priority patent/US7080339B2/en
Priority claimed from US10/443,595 external-priority patent/US7243328B2/en
Application filed by Cadence Design Systems Inc filed Critical Cadence Design Systems Inc
Publication of WO2004102339A2 publication Critical patent/WO2004102339A2/en
Publication of WO2004102339A3 publication Critical patent/WO2004102339A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/30—Circuit design
    • G06F30/39—Circuit design at the physical level
    • G06F30/394—Routing

Abstract

Some embodiments of the invention provide novel methods for removing acute angles from routes in a design layout (Figure 34). The method selects a route with several segments. It then identifies an acute angle between first and second contiguous segments of the route (Figure 33). The method next inserts a third segment between the first and second segments, where the third segment has an associated shape that fills the acute angle between the first and second segments (Figure 13).
PCT/US2004/014380 2003-05-07 2004-05-06 Removal of acute angles in a design layout WO2004102339A2 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US46892603P 2003-05-07 2003-05-07
US60/468,926 2003-05-07
US10/443,315 US7065731B2 (en) 2003-05-07 2003-05-21 Removal of acute angles in a design layout
US10/443,811 US7080339B2 (en) 2003-05-07 2003-05-21 Plane representation of wiring in a design layout
US10/443,595 2003-05-21
US10/443,595 US7243328B2 (en) 2003-05-07 2003-05-21 Method and apparatus for representing items in a design layout
US10/443,315 2003-05-21
US10/443,811 2003-05-21

Publications (2)

Publication Number Publication Date
WO2004102339A2 WO2004102339A2 (en) 2004-11-25
WO2004102339A3 true WO2004102339A3 (en) 2005-03-24

Family

ID=33459127

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/014380 WO2004102339A2 (en) 2003-05-07 2004-05-06 Removal of acute angles in a design layout

Country Status (1)

Country Link
WO (1) WO2004102339A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7065731B2 (en) 2003-05-07 2006-06-20 Cadence Design Systems, Inc. Removal of acute angles in a design layout
US7571408B1 (en) 2005-03-09 2009-08-04 Cadence Design Systems, Inc. Methods and apparatus for diagonal route shielding
US7472366B1 (en) 2005-08-01 2008-12-30 Cadence Design Systems, Inc. Method and apparatus for performing a path search
US7694258B1 (en) 2005-08-01 2010-04-06 Cadence Design Systems, Inc. Method and apparatus for inserting metal fill in an integrated circuit (“IC”) layout

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6301686B1 (en) * 1998-03-24 2001-10-09 Nec Corporation Graphic layout compaction system capable of compacting a layout at once

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6301686B1 (en) * 1998-03-24 2001-10-09 Nec Corporation Graphic layout compaction system capable of compacting a layout at once

Also Published As

Publication number Publication date
WO2004102339A2 (en) 2004-11-25

Similar Documents

Publication Publication Date Title
GB0502071D0 (en) Al-cu-Mg-si alloy and method for producing the same
EG25310A (en) Method for etching phosphate ores.
FR2855343B1 (en) METHOD FOR ELECTRONIC GROUP SIGNATURE WITH REVOCABLE ANONYMAL, EQUIPMENT AND PROGRAMS FOR IMPLEMENTING THE METHOD
DE69925361D1 (en) NETWORKABLE MACROMERS THAT CARRY AN INITIATOR GROUP
MX244755B (en) Method for controllong scale formation and deposition in aquesous systems.
SG116439A1 (en) System and method for determining specific rquirements from general requirements documents.
EG23415A (en) Self-refrigerated lng process.
HK1082055A1 (en) Electrophoretic medium and method for forming the same
GB0227653D0 (en) A method for producing indicators and processing system utilizing the indicators
GB0402650D0 (en) Method for liquefying methane-rich gas
EP1441227A3 (en) Functional beads, method for reading the same and bead-reading apparatus
WO2004046890A3 (en) Method and system for processing sales process information, for sales process configuration, for sales process integration, and for modeling sales processes
EP1650532A4 (en) Navigation system, method and program
MXPA03006711A (en) Manufacturing information and alarming system and method.
NO20031465D0 (en) Displacement measurement system and method
EP1653427A4 (en) Digital map position information communication method, program for executing the same, program product therefor, system therefor, and apparatus therefor
AU2003290069A1 (en) Turbo-machine and method for operating the same
WO2004102339A3 (en) Removal of acute angles in a design layout
ZA200408639B (en) A system for and method for authenticating items.
ZA200201391B (en) Removing sulphur from hydroprocessed Fischer-Tropsch products.
WO2003090039A3 (en) Method for leveraging in-vehicle resources
DE60035066D1 (en) CONDUCTOR PLATE, MULTILAYER CONDUCTOR PLATE AND METHOD FOR THE PRODUCTION THEREOF
AU2003259691A1 (en) An enhanced diamond and method for making the same
AU2003281633A8 (en) Method for liquefying a hydrocarbon-rich flow while simultaneously obtaining a cless thansbgreater than3less than/sbgreater than/cless thansbgreater than4less than/sbgreater than-rich fraction
AU2002357627A1 (en) Route search apparatus, route search system, program, and route search method

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
122 Ep: pct application non-entry in european phase