Method and apparatus for enhancement of display screen resolution

Claim 1

A method for increasing the visually perceptible resolution of a physically addressable analog-vector-display-screen coordinate system grid, said grid having a predetermined actual-resolution-density, until said resolution appears, to a viewer, to equal a greater predetermined virtual-resolution-density, and for drawings at least one composite line resolved at said virtual density, said method for increasing and drawing comprising the steps of: (a) receiving a first endpoint virtual coordinate X,Y pair, said first virtual pair having a virtual resolution higher than the grid resolution; (b) receiving a second endpoint virtual coordinate X,Y pair at the virtual resolution; (c) determining D as the integer division of the virtual resolution by the grid resolution; (d) creating a first anchor point X coordinate by dividing the first endpoint X coordinate by D using integer division; (e) creating a first anchor point Y coordinate by dividing the first endpoint Y coordinate by D using integer division; (f) creating a second anchor point X coordinate by dividing the second endpoint X coordinate by D using integer division; (g) creating a second anchor point Y coordinate by dividing the second endpoint Y coordinate by D using integer division; (h) drawing, on said analog vector display screen with an electron beam, a component line from the first anchor point to the second anchor point; (i) incrementing the first endpoint coordinate X,Y pair; (j) incrementing the second endpoint coordinate X,Y pair; (k) repeating steps (d) through (j) until D component lines are drawn to form the composite line, such that the endpoints of the composite line visibly appear to be resolved at locations having said virtual density.

Claim 2

A method for increasing the visually perceptible resolution of a physically addressable analog-vector-display-screen coordinate system grid, said grid having a predetermined actual-resolution-density, until said resolution appears, to a viewer, to equal a greater predetermined virtual-resolution-density, and for drawings at least one composite line resolved at said virtual density, said method for increasing and drawing comprising the steps of: (a) receiving a first endpoint virtual coordinate X,Y pair, said first virtual pair having a virtual resolution higher than the grid resolution; (b) receiving a second endpoint virtual coordinate X,Y pair at the virtual resolution; (c) determining D as the integer division of the virtual resolution by the grid resolution; (d) creating a first anchor point X coordinate by dividing the first endpoint X coordinate by D using integer division; (e) creating a first anchor point Y coordinate by dividing the first endpoint Y coordinate by D using integer division; (f) creating a second anchor point X coordinate by dividing the second endpoint X coordinate by D using integer division; (g) creating a second anchor point Y coordinate by dividing the second endpoint Y coordinate by D using integer division; (h) drawing, on said analog vector display screen with an electron beam, a component line from the first anchor point to the second anchor point; (i) incrementing the first endpoint coordinate X,Y pair; (j) incrementing the second endpoint coordinate X,Y pair; (k) repeating steps (d) through (j) until D component lines are drawn to form the composite line, such that the endpoints of the composite line visibly appear to be resolved at locations having said virtual density.