US 11,993,237 B2
Drive assistance device
Mafune Kakeshita, Toyota (JP); Toshifumi Kawasaki, Toyota (JP); and Kohei Morotomi, Nagoya (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jul. 12, 2022, as Appl. No. 17/862,590.
Application 17/862,590 is a continuation of application No. 16/867,630, filed on May 6, 2020, granted, now 11,433,861.
Claims priority of application No. 2019-146974 (JP), filed on Aug. 9, 2019.
Prior Publication US 2022/0340106 A1, Oct. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B60T 7/12 (2006.01); B60T 17/18 (2006.01)
CPC B60T 7/12 (2013.01) [B60T 17/18 (2013.01); B60T 2201/10 (2013.01); B60T 2220/02 (2013.01); B60T 2220/06 (2013.01); B60T 2250/03 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A drive assistance device comprising:
an automatic brake unit configured to perform automatic brake control of a vehicle to automatically stop the vehicle;
a brake hold unit configured to perform brake hold control of the vehicle to keep the vehicle stopped after the automatic brake control is performed;
an exterior vehicle sensor configured to surroundings information of the vehicle;
an operation state sensor configured to detect at least one driving maneuver performed by a driver of the vehicle;
a brake hold cancel unit configured to cancel the brake hold control of the vehicle when a cancel condition is satisfied;
a prohibition unit configured to prohibit cancelation of the brake hold control, even when the cancel condition is satisfied, based upon a predetermined situation of the vehicle being satisfied,
wherein the predetermined situation includes: (i) a situation around the vehicle indicates that a predetermined surroundings information is satisfied and (ii) a predetermined driving maneuver is performed by the driver.