Automotive computing devices with emergency power shut down...

Details Automotive computing devices with emergency power shut down... Automotive computing devices with emergency power shut down...

2006-08-29

2006-08-29

Peikari, B. James (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S104000, C711S105000, C711S165000, C713S330000, C713S340000, C701S029000

Reexamination Certificate

active

07099991

ABSTRACT:
Methods and systems for operating automotive computing devices are described. In one embodiment, a small amount of static RAM (SRAM) is incorporated into an automotive computing device. The SRAM is battery-backed to provide a non-volatile memory space in which critical data can be maintained in the event of a power loss. Circuitry is provided to ensure that the SRAM receives back up power from the battery at the appropriate time. Software manages the SRAM and the other storage assembly components and makes use of virtual paging or virtual addressing techniques to keep track of where various pages, including object store pages, are stored in the system. The software knows exactly where all of the object store pages are stored so that in the event of a power loss, the page locations are known and hence the pages can be used when power is restored.

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Bannatyne Ross; “Semiconductor Developments for Automotive Systems” 1999 IEEE 49th Vehicular Technology Conference Houston TX May 16-20 pp. 1392-1396.
Ochoa James A. Dr.; Advanced Law Enforcement Vehicle Electronics and Associated Power The 18th Digital Avionics Systems Conference St. Louis MO Oct. 24-Oct. 29, 1999 pp. 8B.6-1-6-6.

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