Power management for automotive multimedia system

摘要

A multimedia/personal computer-based system for operating information, communication, and entertainment devices in a mobile vehicle uses a power management strategy which reduces power consumption and boot-up time in a manner which facilitates use of a complex instruction set computing (CISC) processor system. A loosely coupled power management strategy utilises a low power microprocessor (25) off board of the main motherboard (10) for switching a plurality of regulated voltages to the main motherboard (10) and other devices. The use of a separate board for input/output processing and power management provides for more robust power management and facilitates adaptation of the system for inclusion in different vehicles using different input/output devices and networks. <IMAGE>