Transform table for ink sizing and compression

• US 20050105945A1
• Filed: 12/23/2004
• Published: 05/19/2005
• Est. Priority Date: 06/27/2001
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Dresevic, Bodin, Balaz, Rudolph, Hullender, Gregory Nicholas
• Granted Patent: US 7,346,229 B2
• Time in Patent Office: Days
• US Class Current: 400/62
• CPC Class Codes: G06F 40/103 Formatting, i.e. changing of presentation of documents automatic justification G06F40/189; automatic line break hyphenation G06F40/191

Abstract

Ink is stored in a data structure that includes a mapping of the ink'"'"'s coordinates from one space to another. The responsibility of transforming the ink into desired coordinates occurs after the capture of the ink and at least based on the mapping in the data structure.

Claims

1. A method for creating a data structure, said method comprising the steps of:

receiving a first ink stroke;

determining a mapping of coordinates associated with the first ink stroke to a virtual space; and

creating the data structure that associates the first ink stroke with the mapping.

2. The method according to claim 1, further comprising the step of:

after receiving the first ink stroke, creating an empty ink object.

3. The method according to claim 1, further comprising the step of:

after determining the mapping, adding a second ink stroke, the second ink stroke sharing the mapping associated with the first ink stroke.

4. The method according to claim 1, wherein the determining a mapping step further comprises the steps of:

determining a native coordinate system;

determining a virtual coordinate system; and

,

determining coefficients to transform coordinates from the native coordinate system to the virtual coordinate system.

5. The method according to claim 1, wherein said determining a mapping step results in a determination of A, B, C, D, E, and F satisfying

x′

=Ax+By+C
y′

=Dx+Ey+F

where (x,y) is a coordinate of the native coordinate system and (x′

,y′

) is a coordinate of the virtual coordinate system.

6. The method according to claim 1, wherein said determining a mapping results in the combination of a first mapping having the form of

X′

=ax+by+c
Y′

=dx+ey+f

and a second mapping in the form of

X″

=gx′

+hy′

+i
Y″

=jx′

+ky′

+m

into a third mapping having the form of

X″

=(ga+hd)x+(gb+he)y+gc+hf+i
Y″

=(ja+kd)x+(jb+ke)y+jc+kf+m.