Antialiasing apparatus and method for computer printers
US5185852A · kind A · utility
48Cited by
1References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | May 31, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0071
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Printer apparatus provides a grayscale bitmap from a bitonal bitmap of desired output data. The apparatus includes a mapping function implemented as a lookup table for assigning predetermined grayscale values to bitonal bitmap pixels according to the neighborhood or subset of bitonal bitmap pixels including the subject pixel. From the grayscale values the laser of the laser printer is modulated to produce shades of gray during the printing of the desired data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.