US 11,758,102 B2
Display device and display method
Hirotomo Ishii, Saitama (JP); Norihiro Nagashima, Saitama (JP); Saori Koeda, Saitama (JP); and Hirofumi Nishiyama, Saitama (JP)
Assigned to Marelli Corporation, Saitama (JP)
Appl. No. 17/619,574
Filed by Marelli Corporation, Saitama (JP)
PCT Filed Jul. 3, 2020, PCT No. PCT/JP2020/026256
§ 371(c)(1), (2) Date Dec. 15, 2021,
PCT Pub. No. WO2021/049141, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 2019-167592 (JP), filed on Sep. 13, 2019.
Prior Publication US 2022/0377299 A1, Nov. 24, 2022
Int. Cl. H04N 13/111 (2018.01); B60K 35/00 (2006.01)
CPC H04N 13/111 (2018.05) [B60K 35/00 (2013.01); B60K 2370/1529 (2019.05); B60K 2370/166 (2019.05); B60K 2370/52 (2019.05); B60Y 2200/11 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A display device mounted on a vehicle and comprising a control unit and a display unit,
wherein the control unit is configured to calculate coordinates of a second point obtained as a result of projecting a first point in a three-dimensional coordinate system onto a two-dimensional plane, convert the calculated coordinates of the second point into coordinates according to a display mode of the display unit, and cause the display unit to display an image corresponding to the second point at the converted coordinates,
the three-dimensional coordinate system is a three-dimensional coordinate system relative to the vehicle, and is defined by an X coordinate axis approximately parallel to a width direction of the vehicle, a Y coordinate axis approximately parallel to a direction from rear to front of the vehicle, and a Z coordinate axis approximately parallel to a height direction of the vehicle,
the two-dimensional plane is at a predetermined distance away from an origin of the three-dimensional coordinate system along the Y coordinate axis, and is approximately parallel to an XZ plane defined by the X coordinate axis and the Z coordinate axis, and
the control unit is configured to:
calculate the coordinates of the second point obtained as a result of projecting the first point in the three-dimensional coordinate system onto the two-dimensional plane, by the following Formula (1):
Xc=(L/Y)×X
Zc=(L/Y)×Z  Formula (1),
where the predetermined distance is L, coordinates of the first point in the three-dimensional coordinate system are (X, Y, Z), and the coordinates of the second point on the two-dimensional plane are (Xc, Zc); and
convert the calculated coordinates of the second point into the coordinates according to the display unit, by the following Formula (2):
Xs=Xc×(C1/ZA)+C2
Ys=Zc×(C1/ZA)+C1  Formula (2),
where a coordinate system of the display unit is an XsYs coordinate system, a Z coordinate of the vehicle in the three-dimensional coordinate system is ZA, and the display mode of the display unit varies depending on a constant C1 and a constant C2.