Apparatus for generating an image from a digital video signal
USRE38942E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1991 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Jan 24, 2011 |
Classification
- Technology area (CPC —)General
Abstract
An apparatus for generating a high quality image from a digital video signal includes a system for gamma correcting the digital video signal with a digital look up table and for converting the resultant digital signal to an analog video signal. Another circuit generates a triangular wave reference pattern signal and a comparator compares the analog video signal with the triangular wave reference pattern signal to form a pulse-width-modulated signal. A raster scanning print engine producing, for example, a laser beam, scans over a recording medium in accordance with the pulse-width-modulated signal, thereby forming an image of high quality on the recording medium of a print engine. This apparatus can also be used with an analog video signal by first converting the analog video signal to a digital video signal with an analog to digital converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.