Anti-aliasing apparatus and method using fast scan-line memory mapping for sampling pixel patterns
US5596684A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1994 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Nov 23, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/006
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method processes a plurality of bits stored in a first memory and representing an image to be printed by reproducing the bits in a fast scan direction. The method includes the step of reading a plurality of groups from the first memory into a second memory, wherein each of the groups comprises a number of bits greater than one bit and is stored in the second memory in the fast scan direction, and wherein each group is read one group at a time. Further, the method includes copying a predetermined number of bits from each of the plurality of groups to a sample storage area. After the copying step, the method samples the bits of the copied groups wherein the sampled bits form a pattern having a center bit having a binary state. Finally, after the sampling step, the method outputs a print signal representative of the binary state if the pattern does not match a predetermined pattern, or outputs a print signal different than the binary state if the pattern matches a predetermined pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.