Patent ID: 11908316
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. The walking information provision system according to claim 1, wherein
the device is a cane used by the pedestrian being a visually impaired person, and is configured to notify the visually impaired person of the information on walking by vibration,
the attribute of the information on walking is assigned, based on the urgency degree and the importance degree, to an advisory zone, a caution zone, or a warning zone,
the attribute of the information on walking is assigned to the advisory zone in response to any one of following (a)-(d):
(a) the visually impaired person has not approached a crosswalk and a power source of the walking information provision system is turned on,
(b) a state of a traffic light is recognized based on information of an image captured by a camera of the cane,
(c) the state of the traffic light being switched from a red light to a green light was recognized, and
(d) the visually impaired person completes crossing of the crosswalk without deviating to a left side or a right side of the crosswalk,

the attribute of the information on walking is assigned to the caution zone in response to any one of following (e)-(g):
(e) the visually impaired person starts walking toward the crosswalk and a time to reach the crosswalk is less than a predetermined time,
(f) the visually impaired person deviates to the left side or the right side of the crosswalk while crossing the crosswalk, and
(g) an error occurs in the walking information provision system due to the state of the traffic light not being recognized, and

the attribute of the information on walking is assigned to the warning zone in response to that the visually impaired person starts crossing the crosswalk even though the traffic light is the red light.