Patent Document ID: 4672370
Application ID: 06667320
Patent Status: 1

Claim One:
1. In a stroke-vector character generation system capable of displaying characters wherein each stroke-vector is characterized by a plurality of character-shape dependent stroke attributes and a plurality of character-field-size dependent stroke attributes, a method of scaling characters comprising the steps of: receiving a first data signal defining a character type, a horizontal X and a vertical Y character field dixension, and a character drawing point, said dimensions and drawing point being in the coordinate system of said display screen; retrieving from memory a stroke-vector character mask corresponding to the character defined by said first data signal, said character mask containing a stroke resolution factor representing the number x of horizontal stroke-vectors in a straight line and the number y of vertical stroke-vectors in a straight line that are used by said character mask to represent said character within a normalized character field; generating a horizontal length stroke-vector attribute DX-LENGTH by forming the quotient X/x, and generating a vertical length stroke-vector attribute DY-LENGIH by forming the quotient Y/y; converting said DX-LENGTH attribute and said DY-LENGTH attribute from the display screen coordinate system to a virtual screen coordinate system having a greater resolution than the display screen coordinate system; scaling the length of each stroke-vector in said character mask by applying said DX-LENGTH and DY-LENGTH attributes in the virtual screen coordinate system to each of said stroke-vectors of said character mask; and translating the stroke-vectors of said character mask in the virtual screen coordinate system to the physical screen coordinate system, said translated stroke-vectors having those attributes that define a character image on the display screen having the desired X and Y field dimensions. --.