Method and apparatus for rotation of high addressability bitmap images
US5634088A · kind A · utility
25Cited by
7References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1995 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Nov 1, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/606
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a method and apparatus for consistently rotating high addressability bitmap images to be rendered on a printing system. The invention first encodes the high addressability image to produce a regular bitmap array and then rotates the regular array. Next the invention applies a compact dot growth operation to assure that the exposure pulses for any gray pixels are consistently positioned, thereby assuring consistent output-independent of the rotation direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.