Electronic book
US9323125B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2014 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Dec 1, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electronic book includes an electronic paper display module, an electrochromic unit, a light source module, and a light detecting unit. The electrochromic unit is arranged on the electronic paper display module and configured for adjusting a brightness for the electronic paper display module. The light source module is arranged on the electrochromic unit and configured for illuminating the electronic paper display module. The light source module includes a light guide member and a light source, the light source arranged at one side of the light guide member. The light detecting unit includes a light detector, a storage unit, and a control unit. The light detector is configured for detecting a brightness of ambient light, the storage unit is used for storing a preset value range, and the control unit is used for controlling the light source module and the electrochromic unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.