The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2003
Filed:
Sep. 08, 1999
Douglas Alexander, South Lyon, MI (US);
David P. Wright, Redford, MI (US);
John Frank Konstantine, Dearborn, MI (US);
Vincent Messina, Saline, MI (US);
Visteon Global Technologies, Inc., Dearborn, MI (US);
Abstract
A multimedia/personal computer based system for operating information, communication, and entertainment devices in a mobile vehicle uses a power management system which provides power to volatile ram during engine startup. During engine startup, battery voltage decreases to a point that most electronic devices can not function and may be harmed. A low power microprocessor off-board of a main processor board, which is a complex instruction set (CISC) processor system, switches a primary voltage regulator, which provides a plurality of regulated voltages to the main processor board, off to reduce power requirements. The main processor board stores a state of predetermined peripheral devices in volatile ram and then turns the devices off. The main processor then goes into a suspend mode awaiting a wake up signal from the low power microprocessor. A secondary voltage regulator turns on to supply power to the volatile ram when the primary voltage regulator is turned off.