US 12,261,867 B2
Method and system for estimating the time of occurrence of a security event
Seok Min Hong, Hanam-si (KR); and Hyun Jung Lee, Namyangju-si (KR)
Assigned to FESCARO Co., Ltd., Suwon-si (KR)
Filed by FESCARO Co., Ltd., Suwon-si (KR)
Filed on Oct. 18, 2022, as Appl. No. 17/968,043.
Claims priority of application No. 10-2021-0138697 (KR), filed on Oct. 18, 2021.
Prior Publication US 2023/0121819 A1, Apr. 20, 2023
Int. Cl. G06F 21/00 (2013.01); H04L 9/40 (2022.01)
CPC H04L 63/1425 (2013.01) [H04L 63/1416 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of estimating a time of occurrence of a security event, the method comprising:
transmitting an actual time to a gateway of a vehicle;
obtaining, from the gateway, time history data storing an actual time flag data element;
obtaining, from the gateway, logging data prepared during security event detection; and
estimating a time of occurrence of a security event, based on the logging data and the time history data,
wherein the time history data and the logging data are prepared based on a vehicle reference time including a timestamp value and a reset counter value of the vehicle, and
wherein the gateway identifies a clock state of the vehicle during booting, and when the clock state of the vehicle is a disabled state, the gateway writes a data element of a reset flag on the time history data and then changes the clock state of the vehicle to an enabled state.