Portable electronic device
US7278224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2006 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | May 23, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B3/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A portable electronic device is provided. The portable electronic device includes a casing, a display unit, a roller, an encoder and a controller. The casing has a casing surface. The display unit is disposed on the casing surface. The roller is rotatably disposed on the casing surface with a portion of the roller being exposed outside the casing. The roller is for adjusting the voice of the portable electronic device when the portable electronic device works at a voice-adjusting mode. The roller is for touching a surface and rotating on the surface to measure a length when the portable electronic device works at a length-measuring mode. The encoder disposed inside the casing is for outputting a pulse number. The controller receives the pulse number and determines a length value accordingly, and then controls the display unit to display the length value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.