FR2615981B1 - Procede et dispositif pour obtenir des valeurs inverses instantanees de coordonnees homogenes w pour utilisation dans la restitution d'images sur un organe afficheur - Google Patents

Procede et dispositif pour obtenir des valeurs inverses instantanees de coordonnees homogenes w pour utilisation dans la restitution d'images sur un organe afficheur

Info

Publication number
FR2615981B1
FR2615981B1 FR8806128A FR8806128A FR2615981B1 FR 2615981 B1 FR2615981 B1 FR 2615981B1 FR 8806128 A FR8806128 A FR 8806128A FR 8806128 A FR8806128 A FR 8806128A FR 2615981 B1 FR2615981 B1 FR 2615981B1
Authority
FR
France
Prior art keywords
rendering
images
display member
homogeneous coordinates
inverted values
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
FR8806128A
Other languages
English (en)
Other versions
FR2615981A1 (fr
Inventor
Lien Sheue-Ling
R. Evans Jerald
E. Carrie Susan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sun Microsystems Inc
Original Assignee
Sun Microsystems 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
Application filed by Sun Microsystems Inc filed Critical Sun Microsystems Inc
Publication of FR2615981A1 publication Critical patent/FR2615981A1/fr
Application granted granted Critical
Publication of FR2615981B1 publication Critical patent/FR2615981B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/52—Multiplying; Dividing
    • G06F7/535—Dividing only
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/03—Digital function generators working, at least partly, by table look-up
    • G06F1/035—Reduction of table size
    • G06F1/0356—Reduction of table size by using two or more smaller tables, e.g. addressed by parts of the argument
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/20—Drawing from basic elements, e.g. lines or circles
    • G06T11/203—Drawing of straight lines or curves
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2101/00—Indexing scheme relating to the type of digital function generated
    • G06F2101/12—Reciprocal functions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/535—Indexing scheme relating to groups G06F7/535 - G06F7/5375
    • G06F2207/5354—Using table lookup, e.g. for digit selection in division by digit recurrence
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/535—Indexing scheme relating to groups G06F7/535 - G06F7/5375
    • G06F2207/5356—Via reciprocal, i.e. calculate reciprocal only, or calculate reciprocal first and then the quotient from the reciprocal and the numerator

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computing Systems (AREA)
  • Image Generation (AREA)
FR8806128A 1987-05-08 1988-05-06 Procede et dispositif pour obtenir des valeurs inverses instantanees de coordonnees homogenes w pour utilisation dans la restitution d'images sur un organe afficheur Expired - Fee Related FR2615981B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/047,767 US5179659A (en) 1987-05-08 1987-05-08 Method and apparatus for deriving instantaneous reciprocals of the homogenous coordinate w for use in defining images on a display

Publications (2)

Publication Number Publication Date
FR2615981A1 FR2615981A1 (fr) 1988-12-02
FR2615981B1 true FR2615981B1 (fr) 1994-04-01

Family

ID=21950849

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8806128A Expired - Fee Related FR2615981B1 (fr) 1987-05-08 1988-05-06 Procede et dispositif pour obtenir des valeurs inverses instantanees de coordonnees homogenes w pour utilisation dans la restitution d'images sur un organe afficheur

Country Status (8)

Country Link
US (1) US5179659A (fr)
JP (1) JPH0664620B2 (fr)
CA (1) CA1317691C (fr)
DE (1) DE3815374C2 (fr)
FR (1) FR2615981B1 (fr)
GB (2) GB2204433B (fr)
HK (2) HK61092A (fr)
SG (1) SG52292G (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02156328A (ja) * 1988-12-08 1990-06-15 Toshiba Corp 逆数回路
US5471573A (en) * 1989-12-07 1995-11-28 Apple Computer, Inc. Optimized scan conversion of outlines for generating raster images
EP0530661A3 (en) * 1991-09-04 1994-06-15 Seikosha Kk Curve approximation method
US5739820A (en) * 1992-11-19 1998-04-14 Apple Computer Inc. Method and apparatus for specular reflection shading of computer graphic images
US5544291A (en) * 1993-11-10 1996-08-06 Adobe Systems, Inc. Resolution-independent method for displaying a three dimensional model in two-dimensional display space
US5798762A (en) * 1995-05-10 1998-08-25 Cagent Technologies, Inc. Controlling a real-time rendering engine using a list-based control mechanism
US6581085B1 (en) * 1999-05-12 2003-06-17 Ati International Srl Approximation circuit and method
US7117238B1 (en) * 2002-09-19 2006-10-03 Nvidia Corporation Method and system for performing pipelined reciprocal and reciprocal square root operations
US7457838B2 (en) * 2003-12-03 2008-11-25 Marvell World Trade Ltd. Methods and apparatus for performing calculations using reduced-width data
US7657589B2 (en) * 2005-08-17 2010-02-02 Maxim Integrated Products System and method for generating a fixed point approximation to nonlinear functions
US7962537B2 (en) * 2006-06-26 2011-06-14 Southern Methodist University Determining a table output of a table representing a hierarchical tree for an integer valued function

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508038A (en) * 1966-08-30 1970-04-21 Ibm Multiplying apparatus for performing division using successive approximate reciprocals of a divisor
SU546881A1 (ru) * 1974-09-16 1977-02-15 Институт Электродинамики Ан Украинской Сср Устройство дл определени обратной величины числа
US4482975A (en) * 1982-03-29 1984-11-13 Motorola, Inc. Function generator
US4636973A (en) * 1982-07-21 1987-01-13 Raytheon Company Vernier addressing apparatus
US4688186A (en) * 1982-10-04 1987-08-18 Honeywell Bull Inc. Division by a constant by iterative table lookup
US4718032A (en) * 1985-02-14 1988-01-05 Prime Computer, Inc. Method and apparatus for effecting range transformation in a digital circuitry
JPS61262930A (ja) * 1985-05-17 1986-11-20 Nec Corp 除算装置
JPS6278629A (ja) * 1985-10-02 1987-04-10 Hitachi Denshi Ltd 逆数値演算方式

Also Published As

Publication number Publication date
JPS6453277A (en) 1989-03-01
HK61092A (en) 1992-08-21
FR2615981A1 (fr) 1988-12-02
GB2224914B (en) 1992-02-05
US5179659A (en) 1993-01-12
JPH0664620B2 (ja) 1994-08-22
GB8810315D0 (en) 1988-06-02
GB8925215D0 (en) 1989-12-28
DE3815374A1 (de) 1988-11-24
GB2204433A (en) 1988-11-09
CA1317691C (fr) 1993-05-11
DE3815374C2 (de) 1997-07-17
HK60892A (en) 1992-08-21
GB2224914A (en) 1990-05-16
GB2204433B (en) 1992-02-05
SG52292G (en) 1992-12-04

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Legal Events

Date Code Title Description
ST Notification of lapse