Wake up system for electronic component supported on a vehicle
US6838783B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2002 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jun 11, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A power control assembly limits the amount of leakage current absorbed by a device (30) supported on a vehicle when the device is in a sleep mode. The described example includes a switch (40) between a vehicle power source (54) and a power supply (50, 52) for the peripheral device. A locking portion (44) controls operation of the switch (40) so that selected portions of the device (30) are isolated from the vehicle power source (34) when the device (30) is in a sleep mode. A wake up signal received by a communication bus transceiver (32) activates the switch locking portion (44), which in turn allows the isolating switch (40) to be electrically closed and kept in the closed condition until the controller (54) of the device determines that the device should enter the sleep mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.