US 12,392,890 B2
Vision system for a vehicle-trailer system
Michael J. Nocket, Frisco, TX (US); and Tyler J. Kass, Hickory Creek, TX (US)
Assigned to Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US); and Toyota Jidosha Kabushiki Kaisha, Toyota (JP)
Filed by Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US)
Filed on Oct. 31, 2023, as Appl. No. 18/499,070.
Prior Publication US 2025/0136022 A1, May 1, 2025
Int. Cl. G01S 13/90 (2006.01); B60R 11/04 (2006.01); G01S 13/00 (2006.01); H04B 7/02 (2018.01); H04L 5/00 (2006.01)
CPC G01S 13/90 (2013.01) [B60R 11/04 (2013.01); G01S 13/00 (2013.01); H04B 7/02 (2013.01); H04L 5/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. In a vehicle-trailer system, a vision system configured to maximize a signal-to-noise ratio (SNR) of a video signal received from a trailer-mounted camera system, the vision system comprising:
a vehicle-mounted receiver;
a pair of spaced-apart vehicle-mounted Wi-Fi antennas; and
a dual-antenna trailer-mounted camera system configured to transmit a waveform incorporating video data to the vehicle-mounted Wi-Fi antennas,
the receiver including a processor and a memory communicably coupled to the processor and storing a display control module including computer-readable instructions that when executed by the processor cause the processor to:
determine a signal-to-noise ratio based on estimated waveforms received from the camera system antennas via the vehicle-mounted Wi-Fi antennas; and
control operation of at least one vehicle display to display a video signal based on the received waveforms,
the camera system including a processor and a memory communicably coupled to the processor and storing a camera control module including computer-readable instructions that when executed by the processor cause the processor to:
using the SNR and link characterization information, estimate a phase shift to be applied to each future waveform to be transmitted by an associated camera system antenna, to increase a signal-to-noise ratio based on future waveforms received by the receiver from the vehicle Wi-Fi antennas;
apply each phase shift to an associated future waveform to provide estimated waveforms; and
control operation of the camera system antennas to transmit the estimated waveforms through the vehicle Wi-Fi antennas to the receiver for determination of the signal-to-noise ratio based on the received estimated waveforms.