US 12,277,293 B2
Vehicular display device
Ryuji Saito, Niigata (JP)
Assigned to Nippon Seiki Co., Ltd., Niigata (JP)
Appl. No. 18/711,713
Filed by Nippon Seiki Co., Ltd., Niigata (JP)
PCT Filed Nov. 24, 2022, PCT No. PCT/JP2022/043315
§ 371(c)(1), (2) Date May 20, 2024,
PCT Pub. No. WO2023/095823, PCT Pub. Date Jun. 1, 2023.
Claims priority of application No. 2021-191408 (JP), filed on Nov. 25, 2021.
Prior Publication US 2025/0021192 A1, Jan. 16, 2025
Int. Cl. G06F 3/041 (2006.01); G06F 3/04886 (2022.01)
CPC G06F 3/04186 (2019.05) [G06F 3/04886 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A vehicular display device comprising:
a touch panel that detects a touch coordinate on a display screen; and
a controller that causes the touch panel to switch and display a plurality of layout screens including an operation button and causes the touch coordinate to be inputted from the touch panel, wherein:
the touch panel includes a first storage that stores calibration data, which is an adjustment parameter for detecting the touch coordinate;
the controller includes a second storage that stores correct calibration data, and is further configured to detect a malfunction of the touch panel;
the plurality of layout screens includes:
a first layout screen that does not include a fail-safe control target operation button, which is a malfunction detection target of the controller; and
a second layout screen that includes the fail-safe control target operation button;
after the controller is activated and before the second layout screen is displayed on the touch panel, the controller compares the calibration data stored in the first storage and the calibration data stored in the second storage, thereby executing a first confirmation process to confirm whether the calibration data stored in the first storage is correct; and
when the controller determines that the calibration data stored in the first storage is incorrect, the controller rewrites the calibration data stored in the first storage to the correct calibration data.