Program/data overwriting control after machine stop

Details Program/data overwriting control after machine stop Program/data overwriting control after machine stop

1996-07-26

1998-10-27

Nelli, Raymond A.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

F02O 4100

Patent

active

058289771

ABSTRACT:
An engine control program is not overwritten when an engine of a vehicle is in operation even if a memory writer sends an engine write request to an engine controller. When an operator stops the engine and the memory writer again requests to overwrite the engine control program, the engine controller receives a write control program from the memory writer and executes the same. After that, the engine controller starts a new engine control program after its CPU is reset. Therefore, since the engine is at a stop during the overwriting of the engine control program, there will be no unexpected operations in the mechanism of the vehicle even though the control program and data are changed.

REFERENCES:
patent: 4510569 (1985-04-01), Takao et al.
patent: 4908792 (1990-03-01), Przybyla et al.
patent: 5293317 (1994-03-01), Adrain et al.
patent: 5602738 (1997-02-01), Sasaki
patent: 5668726 (1997-09-01), Kondo et al.

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