US 11,994,438 B2
Communication device and tire pressure monitoring system
Yoshimitsu Shimojo, Kawasaki Kanagawa (JP); and Kiichiro Oya, Yokosuka Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed on Feb. 17, 2021, as Appl. No. 17/177,792.
Claims priority of application No. 2020-151559 (JP), filed on Sep. 9, 2020.
Prior Publication US 2022/0074804 A1, Mar. 10, 2022
Int. Cl. G06F 1/32 (2019.01); G01L 17/00 (2006.01); G06F 1/3234 (2019.01); G06F 1/3287 (2019.01); G06F 1/3296 (2019.01); G06F 3/06 (2006.01)
CPC G01L 17/00 (2013.01) [G06F 1/3275 (2013.01); G06F 1/3287 (2013.01); G06F 1/3296 (2013.01); G06F 3/0625 (2013.01); G06F 3/0634 (2013.01); G06F 3/0679 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A communication device, the communication device including a normal operation mode and a low-power consumption mode, the communication device comprising:
a first memory unit including a work area for execution of firmware configured to perform basic control of the communication device;
a second memory unit configured to store software for communication with an external device; and
a control unit configured to stop, when transition is performed from the normal operation mode to the low-power consumption mode, voltage supply to the first memory unit and perform control to reduce voltage supplied to the second memory unit to lower than voltage in the normal operation mode.