Method of scaling a graphic character
View Patent ↗A graphic character that has a character matrix with a number of character units that are indivisible at least in either a horizontal direction or a vertical direction is scaled by dividing the character matrix into one first and at least one second character segment, each comprising at least one of the character units. The first character segment is symmetrically scaled using a first scaling factor and the second character segment is scaled using a second scaling factor different from the first scaling factor.
1. A method performed in a processer of scaling a graphic character defined by a character matrix with a number of character units that are indivisible at least in a horizontal direction or a vertical direction, the method performed in the processor comprising:
dividing the character matrix into a first character segment and at least one second character segment, each character segment including at least one of the character units;
symmetrically scaling the first character segment using a first scaling factor; and
scaling within the processor the at least one second character segment using a second scaling factor different from the first scaling factor to provide a scaled character matrix, and filtering of the scaled character matrix to provide a filtered scaled character matrix.
2. The method of claim 1 , where
in a symmetrical scaling of the first character segment by a first scaling factor greater than one, the character units of the first segment are displayed repeatedly adjacently according to the value of the first scaling factor; and
in a symmetrical scaling of the first character segment by a first scaling factor smaller than one, the first character segment is divided into at least two subsegments, each having the same number of character units, while the same number of character units is deleted from each character segment at the same respective positions of the subsegment.
3. The method of claim 2 , where the character matrix has an information segment containing character information and a blank segment containing no character information, and is divided such that the first character segment comprises the information segment and the at least one second character segment comprises the blank segment.
4. The method of claim 3 , where the at least one second character segment is selected such that it consists of one character unit.
5. The method of claim 2 , where the character matrix is divided into one first character segment and two second character segments, the first character segment being located between the second character segments.
6. The method of claim 5 , where the second character segments are selected such that they each comprise exactly one character unit.
7. The method of claim 5 , where the second character segments are scaled using different second scaling factors.
8. The method of claim 1 , where the first scaling factor is greater than one and is an integer.
9. The method of claim 1 , where the first scaling factor is the reciprocal value of an integer.
10. The method of claim 1 , where the character units are lines of the character matrix.
11. The method of claim 1 , where the character units are columns of the character matrix.
12. The method of claim 1 , where the character matrix comprises lines and columns, and where the lines and/or columns are scaled.
13. The method of claim 1 , where the second scaling factor is an integer.
14. The method of claim 1 , where the second scaling factor is a non-integer.
15. A method performed in a processor of scaling a graphic character defined by a character matrix with a number of character units that are indivisible at least in a horizontal direction or a vertical direction, the method performed in a processor comprising:
dividing the character matrix into a first character segment and at least one second character segment, each character segment including at least one of the character units;
symmetrically scaling the first character segment using a first scaling factor; and
scaling within the processor the at least one second character segment using a second scaling factor different from the first scaling factor, where the graphic character is a teletext character having a character matrix of 12 columns by 10 lines.
16. A method performed in a processor of scaling a graphic character defined by a character matrix having a number of character units, the method performed in a processor comprising the steps of:
dividing the character matrix into a first character segment and at least one second character segment, each character segment including at least one character unit;
scaling the first character segment using a first scaling factor;
scaling within the processor the at least one second character segment using a second scaling factor to provide a rescaled character matrix that includes rescaled first and second character segments; and
filtering the rescaled character matrix to provide a filtered rescaled character matrix.
17. The method of claim 16 , where the first and second scaling factors are different.
18. The method of claim 16 , where the character units comprise lines of the character matrix.
19. The method of claim 16 , where the character units comprise columns of the character matrix.