METHOD OF UPDATING FIRMWARE USING SINGLE OPTICAL PORT COMMUNICATION AND MICROCONTROLLER CAPABLE OF UPDATING FIRMWARE
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United States of America Patent
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Jun 24, 2016
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Dec 30, 2013
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Abstract
A method of updating firmware using single optical port communication and a microcontroller (MCU) capable of updating firmware using single optical port communication are disclosed herein. The method includes detecting the voltage of a battery when a firmware update start code is received by a single optical port, transmitting firmware-related information to the transmitter if the detected voltage of the battery is equal to or higher than a predetermined reference voltage, receiving update data corresponding to an update mode, and storing rollback information related to previous version of firmware and also performing an update to new version of firmware in a first mode, and updating the predetermined data of the previous version of firmware using the update data in a second mode.
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