Scanner carriage stop/start artifact suppression system and method
US6335807B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1998 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Nov 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/047
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanner, utilizing a local buffer, prevents the occurrence of stop/start artifacts in the image data by selecting a scan rate that will not overflow the buffer. This is accomplished by having the host computer communicate to the scanner to instruct a modification to a default scanning speed. The modification is based upon an expected rate at which the host computer can consume the image data, prior to the beginning of the document scan. Consequently, the scanner does not generate image data faster than they can be accepted by the host computer, thus avoiding the need to stop the relative movement between the image sensor and the document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.