Memory management in event recording systems

  • US 9,911,253 B2
  • Filed: 12/28/2015
  • Issued: 03/06/2018
  • Est. Priority Date: 12/08/2005
  • Status: Active Grant
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First Claim
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1. A vehicle event recorder system configured to be mounted in a vehicle, the vehicle event recorder system comprising:

  • a camera configured to capture image data, wherein the camera has a field-of-view that includes an environment in and/or around the vehicle, wherein the image data includes a set of consecutive frames of visual information;

    a buffer memory configured to electronically store information, wherein the information includes the image data;

    a long-term storage memory configured to store information, wherein the stored information includes a subset of the set of consecutive frames of visual information;

    one or more sensors configured to generate output signals conveying vehicle information related to a particular vehicle event at a particular time; and

    a controller configured to;

    detect the particular vehicle event based on the generated output signals;

    effectuate storage of the set of consecutive frames of visual information in the buffer memory;

    determine values of individual frames in the set of consecutive frames, wherein the values of the individual frames decrease with increasing time away from the particular time of the particular vehicle event;

    facilitate overwriting of the individual frames stored in the buffer memory based on the determined values; and

    responsive to detecting the particular vehicle event, transfer information stored in the buffer memory to the long-term storage memory, wherein the transferred information includes frames of visual information for a period of time that begins before the particular vehicle event and lasts until after the particular vehicle event.

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