Electronic device having an operating mode and an energy saving standby mode, and a method for switching between the two modes
US6920342B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 2002 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Oct 12, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An electronic device has an operating mode and an energy saving standby mode. The electronic device includes an input-side antenna element for receiving a signal carrying information, a receiving unit for processing the basic information carried on the signal, a voltage supply unit for providing the supply voltage required for operation, and a switching unit for switching between the operating mode and the standby mode. First, to minimize the current being drawn in the standby mode, and second to ensure quick and reliable switching from the energy saving standby mode to the operating mode as required, it is proposed that the signal carrying the information includes a number of modulated frequency bands. At least one frequency band is intended for the basic information to be processed by the receiving unit. The other frequency band contains wake-up information for actuating the switching unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.