Handheld document scanner
US6229139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2000 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Apr 11, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04737
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A document transport for a scanner (100) has a flexible, elongated finger (226) disposed adjacent to a document (134), and a force applied to the finger (226) urges teeth (233) on the finger (226) into contact with the document (134) which urges the document (134) along a path through the scanner (100). A piezoelectric plate (222), which applies the force to the finger (226), requires only a small amount of electrical power. To traverse the scanner (100), a document (134) may also be manually fed along a guide (272). First and second speed-sensing detectors (276a and 276b), disposed along the path traversed by the document (134), permit the scanner (100) to determine a speed at which the manually fed document (134) traverses the scanner (100). To conserve electrical energy, the scanner (100) also includes a document-presence detector (274) for activating the scanner (100) when a document (134) to be scanned is present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.