Method of Storing Accident Data for a Vehicle
First Claim
1. A method of storing accident data for a vehicle implemented in an apparatus for storing accident data for a vehicle, the apparatus including a camera unit, a frame grabber, an accident detecting sensor, a volatile memory, a non-volatile memory, and a controller, the method comprising:
- acquiring, by the controller, driving data including image data every pre-determined interval;
setting a weight value corresponding to an average impulse value included in the acquired driving data, and calculating a priority index;
sequentially storing the driving data if a capacity of the volatile memory is not full, and selecting a block having a lowest priority index from the volatile memory and storing the driving data in the selected block if the capacity of the volatile memory is full;
determining, by the controller, whether a timer starts, checking if an impulse value acquired in real time is greater than a predetermined threshold if the timer does not start, and starting the timer if the impulse value is greater than the pre-determined threshold;
if the timer starts, determining whether a predetermined amount of time has elapsed from a point-in-time at which the timer starts; and
reading out all data stored in the volatile memory and storing the read data in the non-volatile memory as accident-related data if the predetermined amount of time has elapsed from the point-in-time at which the timer starts.
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Accused Products
Abstract
Provided is a method of storing accident data for a vehicle, in which image data taken by a camera during driving is stored in real time, a weight value is set according to a measured impulse value to calculate a priority index and data is stored in a memory based on the priority index, thereby preventing initial accident-cause data from being deleted over time. The method includes acquiring driving data including image data, setting a weight value corresponding to an average impulse value and calculating a priority index, selecting a block having a lowest priority index and storing the driving data in the selected block if the capacity of the volatile memory is full, determining whether a timer starts, and reading out all data stored in the volatile memory and storing the read data in the non-volatile memory if the predetermined amount of time has elapsed.
11 Citations
4 Claims
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1. A method of storing accident data for a vehicle implemented in an apparatus for storing accident data for a vehicle, the apparatus including a camera unit, a frame grabber, an accident detecting sensor, a volatile memory, a non-volatile memory, and a controller, the method comprising:
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acquiring, by the controller, driving data including image data every pre-determined interval; setting a weight value corresponding to an average impulse value included in the acquired driving data, and calculating a priority index; sequentially storing the driving data if a capacity of the volatile memory is not full, and selecting a block having a lowest priority index from the volatile memory and storing the driving data in the selected block if the capacity of the volatile memory is full; determining, by the controller, whether a timer starts, checking if an impulse value acquired in real time is greater than a predetermined threshold if the timer does not start, and starting the timer if the impulse value is greater than the pre-determined threshold; if the timer starts, determining whether a predetermined amount of time has elapsed from a point-in-time at which the timer starts; and reading out all data stored in the volatile memory and storing the read data in the non-volatile memory as accident-related data if the predetermined amount of time has elapsed from the point-in-time at which the timer starts. - View Dependent Claims (2, 3, 4)
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Specification