EP 0175179 A3 19871007 - METHOD AND APPARATUS FOR GENERATING A SET OF SIGNALS REPRESENTING A CURVE

Title (en)

METHOD AND APPARATUS FOR GENERATING A SET OF SIGNALS REPRESENTING A CURVE

Publication

EP 0175179 A3 19871007 (EN)

Application

EP 85110751 A 19850827

Priority

US 64901284 A 19840910
US 64904084 A 19840910

Abstract (en)

[origin: EP0175179A2] Disclosed is a method and system for generating a series of signals representing nodes on a locus of a curve partially defined by a set of related knots, using a compiler in the form of a Hermite cubic parametric polynomial with said knots defining the end points of respective segments of said curve locus, and with said knots being in a successive order in relation to said locus. The method and system are also provided for encoding and decoding said node signals as data and for use of said data in an imaging process responsive to the shape for said curve segments as represented by said encoded data, and encoding the node signals derived in a data base to represent the curve segment. The imaging process involves accessing the encoded data base signals and controlling an imaging means responsive to said accessed signals to reproduce said curve.

IPC 1-7

B41B 19/00; B41B 19/01; G09G 1/14

IPC 8 full level

B41B 19/01 (2006.01); G09G 1/14 (2006.01)

CPC (source: EP)

B41B 19/01 (2013.01); G09G 1/14 (2013.01)

Citation (search report)

[A] WO 8302179 A1 19830623 - DICOMED CORP [US]
[AD] US 4199815 A 19800422 - CRAIG RODERICK I [GB], et al
[A] US 4331955 A 19820525 - HANSEN WALTER I
[AD] US 4029947 A 19770614 - EVANS GREGORY W, et al
[A] COMPUTER, vol. 17, no. 5, May 1984, pages 40-48, IEEE, Long Beach, California, US; J. FLOWERS: "Digital type manufacture: an interactive approach"
[AD] J.D. FOLEY et al.: "Fundamentals of computer graphics", 1982, pages 514-523, Addison-Wesley Publ. Co., Reading, US

Designated contracting state (EPC)

AT CH DE GB LI

DOCDB simple family (publication)

EP 0175179 A2 19860326; EP 0175179 A3 19871007; EP 0175179 B1 19920102; CA 1248250 A 19890103; DE 3585064 D1 19920213

DOCDB simple family (application)

EP 85110751 A 19850827; CA 490402 A 19850910; DE 3585064 T 19850827