Method and apparatus for generating aesthetically alterable character designs

• US 4,933,866 A
• Filed: 11/17/1988
• Issued: 06/12/1990
• Est. Priority Date: 11/17/1988
• Status: Expired due to Fees

• Current Assignee: Mindabit, Inc., Vital Lasertype Incorporated
• Original Assignee: Vital Lasertype Incorporated
• Inventors: Markoff, Jay, Deubert, John R.
• Primary Examiner(s): Harkcom, Gary V.
• Assistant Examiner(s): Zimmerman, Mark K.
• Application Number:
  US07/274,347
• Time in Patent Office: 572 Days
• Field of Search: 364/518, 364/519, 364/521, 340/728, 340/730, 340/731, 340/735, 340/790
• US Class Current: 345/471
• CPC Class Codes: G06K 15/02 using printers
• CPC Class Codes: G06K 2215/0054 Geometric transformations, e.g. on rasterised data
• CPC Class Codes: G09G 5/24 Generation of individual character patterns

Abstract

A process and system for generating an aesthetically altered character design with the aid of a computer includes the steps of providing the computer with coordinates defining a wide fixed reference character shape, providing the computer with corresponding coordinates defining a narrow fixed reference character shape, providing the computer with a desired degree of alteration to be made to the character shape in relation to one of the reference character shapes, and calculating in the computer coordinates of an aesthetically alterable character shape. Each of the calculated coordinates for the aesthetically altered shape is generated by interpolating in an amount equal to the desired degree between corresponding coordinates to the wide fixed and narrow fixed reference character shapes. When the desired degree of alteration is outside corresponding coordinates of the wide fixed and narrow fixed reference character shape, the calculated coordinates are generated by extrapolating between the corresponding coordinates of the wide fixed and narrow fixed reference character shapes.

Claims

1. A process for generating an altered character image design for display and use in the printing industry, with the aid of a computer, comprising the steps, executed by said computer, of:

establishing a wide fixed character shape, said wide fixed character shape being of a particular typeface;

establishing a narrow fixed character shape, said narrow fixed character shape also being of said particular typeface;

providing the computer with data representing coordinates defining said wide fixed reference character shape;

providing the computer with data representing corresponding coordinates defining said narrow fixed reference character shape;

providing the computer with a desired percentage of alteration in relation to one of said reference character shapes;

calculating in the computer new coordinates of an altered character shape having said desired percentage of alteration, each of said calculated coordinates being generated, when said desired percentage of alteration specifies compression of said one character shape, by interpolating between said corresponding coordinates of said wide fixed and narrow fixed reference character shapes in an amount equal to said desired percentage, and when said desired percentage of alteration specifies expansion of said one character shape, by extrapolating beyond said corresponding coordinates of said wide and narrow fixed reference character shapes in an amount equal to desired percentage; and

generating for display on an output device said altered character shape having said new coordinates.

2. The process of claim 1, wherein said degree of alteration is defined by a desired percentage of compression of overall width of said character design, while maintaining character height.

3. The process of claim 1, wherein said degree of alteration is defined by a desired percentage of expansion of overall width of said character design, while maintaining character height.

4. The process of claim 1, wherein said interpolation is between corresponding wide fixed and narrow fixed shape coordinates based on a linear function.

5. The process of claim 1, wherein said interpolation is between corresponding wide fixed and narrow fixed shape coordinates based on a logarithmic function.

6. The process of claim 1, wherein said extrapolation is with reference to corresponding wide fixed and narrow fixed coordinates based on a linear function.

7. The process of claim 1, wherein said extrapolation is in relation to corresponding wide fixed and narrow fixed shape coordinates based on a logarithmic function.

8. The process of claim 1, wherein said wide fixed and narrow fixed reference character shapes each have an overall character height, and each of said character heights are the same, and wherein one of said wide fixed and narrow fixed reference character shapes has an increased "x" height.

9. The process of claim 1, wherein said character designs are sans-serif typeface characters.

10. The process of claim 1, wherein said wide fixed reference character shape is a standard typeface font.

11. A system for generating an altered character image shape for display and use in the printing industry, with the aid of a computer, comprising:

means for establishing a wide fixed character shape, said wide fixed character shape being of a particular typeface;

means for establishing a narrow fixed character shape, said narrow fixed character shape also being of said particular typeface;

means for providing the computer with data representing coordinates defining said wide fixed reference character shape;

means for providing the computer with data representing corresponding coordinates defining said narrow fixed reference character shape;

means for providing the computer with a desired percentage of alteration in relation to one of said reference character shapes;

means for calculating in the computer new coordinates of an altered character shape having said desired percentage of alteration, each of said calculated coordinates being generated, when said desired percentage of alteration specifies compression of said one character shape, by interpolating between said corresponding coordinates of said wide fixed and narrow fixed reference character shapes in an amount equal to said desired percentage, and when said desired percentage of alteration specifies expansion of said one character shape, by extrapolating beyond said corresponding coordinates of said wide and narrow fixed reference character shapes in an amount equal to desired percentage; and

means for generating for display on an output device said altered character shape having said new coordinates.

12. The system of claim 11, wherein said degree of alteration is defined by a desired percentage of compression of overall width of said character designs, while maintaining character height.

13. The system of claim 11, wherein said degree of alteration is defined by a desired percentage of expansion of overall width of said character design, while maintaining character height.

14. The system of claim 11, wherein said interpolation is between corresponding wide fixed and narrow fixed shape coordinates based on a linear function.

15. The system of claim 11, wherein said interpolation is between corresponding wide fixed and narrow fixed shape coordinates based on a logarithmic function.

16. The system of claim 11, wherein said extrapolation is with reference to corresponding wide fixed and narrow fixed coordinates based on a linear function.

17. The system of claim 11, wherein said extrapolation is in relation to corresponding wide fixed and narrow fixed shape coordinates based on a logarithmic function.

18. The system of claim 11, wherein said wide fixed and narrow fixed reference character shapes each have an overall character height, and each of said character heights are the same, and wherein one of said wide fixed and narrow fixed reference character shapes has an increased "x" height.

19. The system of claim 11, wherein said character designs are sans-serif typeface characters.

20. The system of claim 11, wherein said wide fixed reference character shape is a standard typeface font.