Apparatus and method for detecting scanning boundary
US6061147A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1997 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Dec 8, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04732
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method are provided for detecting a scanning boundary of a scanner. The apparatus includes a reference unit, an image-pickup unit, and an operating process unit. The detecting method includes steps of: a) providing an initial optical signal; b) receiving the initial optical signal and generating a reference signal in response to the initial optical signal; c) setting a first reference pixel in the scanner; d) receiving the reference signal and generating a second reference pixel; e) calculating a difference between the first reference pixel and the second reference pixel; and f) detecting the scanning boundary after adjusting the scanner according to the difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.