The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 1994
Filed:
Jul. 12, 1991
Jim C Lo, San Jose, CA (US);
James C Lung, San Jose, CA (US);
Destiny Technology Corporation, Milpitas, CA (US);
Abstract
A fast vertical scan-conversion and filling method and apparatus for outline font character generation in dot matrix devices including a normalized polysegment generation engine for converting spline data to normalized polysegment data, a vertical scan conversion engine comprised of a decision table transitioner (DT) unit for identifying the location of a transition pixel relative to each polysegment or indicating that an identification cannot be made, intersection transition calculating unit (IT) for calculating the position of a transition pixel relative to each polysegment, and a transition pixel coordinate generating unit responsive to the normalized polysegment data and input received from the DT and IT units and operative to generate signals corresponding to the X and Y coordinates of each transition pixel, and a parity filling engine responsive to the x and y coordinate segment and operative to generate bit mapped character image data for use in driving a bit map print or display device.