Image describing apparatus
Patent 4805127 Issued on February 14, 1989. Estimated Expiration Date: 
March 11, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 11, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod of tracing/recording image lines and apparatus therefor Digital technique for constructing variable width lines Line smoothing circuit for graphic display units Method and apparatus for representation of a curve of uniform width Patent #: 4620287 InventorsApplicationNo. 06/838592 filed on 03/11/1986US Classes:345/441, Shape generating345/634Image basedExaminersPrimary: Harkcom, Gary V.Assistant: Herndon, H. R. Attorney, Agent or FirmInternational ClassG06T 5/00 (20060101)Foreign Application Priority Data1985-03-12 JPAbstractAn image describing apparatus for describing a coupling area for forming an image via a graphic command of polygonal shape or a circular arc. The apparatus includes a device for extracting area data of boundary point row in the coupling area, a device for approximating the boundary point row in a linear primitive or curve primitive of a circular arc, a device for dividing the curve primitive so that other area does not exist in the area of the graphic command corresponding to the curve primitive if other area exists in the area of the graphic command corresponding to the approximated curve primitive, and a device for coverting the approximate boundary into a graphic command of polygonal shape or circular arc and setting a preferential sequence to the command to form encoded data.Other References
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