Advanced inductive charging pad for portable devices
US8248024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2008 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | May 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methodologies for efficient inductive charging of electronic devices are provided herein. A charging device as described herein can utilize a sensor-integrated resonating circuit with automatic frequency control to provide low-cost inductive charging functionality for electronic devices. As further described herein, a device to be charged can be equipped with a power receiver operable to receive power from the charging device via electromagnetic induction. The power receiver can additionally be utilized for initiation of charging such that charging for a device commences upon its associated power receiver being brought within range of an inductive charging surface at the charging device. Further, a charging device as described herein can have an inductive charging surface as well as a non-charging surface for providing other services such as information display. A charging device can integrate with an external information source to obtain items to be displayed at a non-charging surface thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.