Electronic device and method for secure operating system update in embedded system
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United States of America Patent
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May 15, 2012
Grant Date -
Jul 15, 2010
app pub date -
Mar 3, 2009
filing date -
Jan 14, 2009
priority date (Note) -
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Abstract
An electronic device and method for secure embedded operating system update within embedded system. The embedded system includes a random-access memory, a non-volatile storage unit and a processing unit. The non-volatile storage unit defines a boot sector, a first sector and a second sector and contains a boot loader in the boot sector, an initialization variable in the boot sector and an embedded operating system in the first sector. The second sector is provided for storing another embedded operating system. The processing unit is coupled to the random-access memory and the non-volatile storage unit and is capable of executing the boot loader in order to copy one of the embedded operating systems from either the first sector or the second sector of the non-volatile storage unit into the random-access memory according to the current value of the initialization variable and then executing the loaded embedded operating system.
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