US 11,704,909 B2
Rear-facing perception system for vehicles
Xiaoling Han, San Diego, CA (US); and Xue Mei, San Diego, CA (US)
Assigned to TUSIMPLE, INC., San Diego, CA (US)
Filed by TUSIMPLE, INC., San Diego, CA (US)
Filed on May 19, 2021, as Appl. No. 17/325,160.
Application 17/325,160 is a continuation of application No. 16/125,531, filed on Sep. 7, 2018, granted, now 11,023,742.
Prior Publication US 2021/0271899 A1, Sep. 2, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G06V 20/56 (2022.01); H04B 7/26 (2006.01); H04N 7/18 (2006.01); H04N 23/65 (2023.01); H04N 23/695 (2023.01); G05D 1/02 (2020.01)
CPC G06V 20/56 (2022.01) [H04B 7/2621 (2013.01); H04N 7/181 (2013.01); H04N 23/651 (2023.01); H04N 23/695 (2023.01); G05D 1/0231 (2013.01); G05D 1/0257 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for rear-facing perception for a vehicle, comprising:
a control unit;
two corner units; and
a center unit,
wherein each of the two corner units and the center unit comprises a camera module, a dual-band transceiver, a power module comprising a battery, and an attachment mechanism that is configured to provide attachability and detachability of each of the two corner units and the center unit to the vehicle,
wherein the camera module of the center unit comprises a fisheye camera,
wherein the control unit is configured to perform, in response to detecting by an inertial measurement unit (IMU) of the control unit an acceleration greater than or equal to a threshold acceleration, a first set of wireless communications between the control unit and the two corner units and the center unit over a first frequency band, wherein the first set of wireless communications comprises a synchronization signal to the center unit and the two corner units, and
wherein the two corner units are configured to switch to an active mode in response to a first trigger signal transmitted over a second frequency band non-overlapping with the first frequency band, wherein the active mode comprises orienting the camera modules on the two corner units.