US 12,252,149 B2
Alert system and recording medium
Masaki Maruyama, Wako (JP); Minoru Higuchi, Wako (JP); Yuya Kishimoto, Wako (JP); Toshiaki Seo, Wako (JP); Masuhito Tanaka, Tokyo (JP); Kazuki Takano, Tokyo (JP); Hidehiro Takeda, Tokyo (JP); and Misaki Koseki, Kawasaki (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Sep. 23, 2022, as Appl. No. 17/951,466.
Claims priority of application No. 2021-159821 (JP), filed on Sep. 29, 2021.
Prior Publication US 2023/0112294 A1, Apr. 13, 2023
Int. Cl. B60W 50/14 (2020.01); B60K 35/00 (2024.01); B60K 35/26 (2024.01); B60K 35/28 (2024.01); B60K 35/29 (2024.01); B60K 35/60 (2024.01); B60K 35/81 (2024.01)
CPC B60W 50/14 (2013.01) [B60K 35/00 (2013.01); B60K 35/26 (2024.01); B60K 35/28 (2024.01); B60K 35/29 (2024.01); B60K 35/60 (2024.01); B60K 35/81 (2024.01); B60K 2360/178 (2024.01); B60K 2360/1868 (2024.01); B60K 2360/188 (2024.01); B60K 2360/334 (2024.01); B60K 2360/785 (2024.01); B60W 2050/143 (2013.01); B60W 2050/146 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An alert system comprising:
a projection device configured to output, on a front window of a mobile body, a visual display viewable to an operator of the mobile body, wherein the projection device comprises a plurality of light sources; and
a processor configured to function as:
a display control unit configured to cause the projection device to output a prescribed alert display on the front window as the visual display;
a target object recognition unit configured to recognize a target object present in front of the mobile body; and
a sound image localization control unit configured to change a sound image position of a prescribed alert sound perceived by the operator by controlling an output mode of a plurality of speakers provided to the mobile body, wherein
the display control unit:
when the target object is not recognized by the target object recognition unit, causes the projection device to output, on the front window, the alert display in a linear form having a prescribed length corresponding to a width of the front window along a width direction of the mobile body; and
when a state changes from a state where the target object is not recognized by the target object recognition unit to a state where the target object is recognized by the target object recognition unit, causes the projection device to output the alert display on the front window such that the length of the alert display is gradually shortened toward a position where a direction from the operator to the target object intersects with the front window,
the sound image localization control unit:
when the target object is not recognized by the target object recognition unit, sets the sound image position of the alert sound to a prescribed range of surroundings of the operator; and
when a state changes from a state where the target object is not recognized by the target object recognition unit to a state where the target object is recognized by the target object recognition unit, gradually reduces the range of the sound image position of the alert sound from the prescribed range toward the direction from the operator to the target object.