Method for maintaining the integrity of a dual microprocessor mu

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

364133, 364900, 371 15, G06F 1130, G06F 1516, F02D 3702

Patent

active

045584168

ABSTRACT:
A dual microprocessor computing system is used to control an engine in a motor vehicle. Each system contains a Personality Programmable Read Only Memory (PPROM) containing system calibration data that is transferred from the PPROM to the read-write memories in the microprocessors. In order to identify each PPROM a byte of memory contains a check sum and a byte of the microprocessor memory contains an identical check sum. During data transfer, the check sums are compared. Also during data transfer, the amount of data being transferred within a predetermined interval is counted both at the transmitter and the receiver memories.

REFERENCES:
patent: 3786433 (1974-01-01), Notley et al.
patent: 4198678 (1980-04-01), Maatje et al.
patent: 4369511 (1983-01-01), Kimura et al.
patent: 4488300 (1984-12-01), Horey et al.
patent: 4532593 (1985-07-01), Mouri et al.
patent: 4532594 (1985-07-01), Hosaka et al.
Anolick et al.: Memory Test System. IBM Technical Disclosure Bull., vol. 22, No. 7, Dec. 1979, pp. 2837-2838.
Electronic Design: Watchdog Timer lets Microcomputer Monitor Itself. Dec. 9, 1982.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for maintaining the integrity of a dual microprocessor mu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for maintaining the integrity of a dual microprocessor mu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for maintaining the integrity of a dual microprocessor mu will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-62754

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.