Vehicle crash data recorder

  • US 6,185,490 B1
  • Filed: 03/15/1999
  • Issued: 02/06/2001
  • Est. Priority Date: 03/15/1999
  • Status: Expired due to Fees
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First Claim
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1. A self-contained apparatus to be installed upon motor vehicles for detecting and recording vehicle operating systems data and vehicle response to kinetic forces that act upon the vehicle during an accident trigger event, comprising:

  • a plurality of electrical connections for collecting pertinent data on vehicle systems, said data including speed of the vehicle, seat belt use, forward or reverse gear status and brake activation, said data being in part analog and in part digital; and

    a multistage memory scheme for storing collected vehicle data, the memory scheme including a short term active memory capable of retaining a short time segment of collected data, a second stage cache memory to temporarily store data transferred from the active memory to prevent overwriting of data stored in the active memory and a non-volatile memory capable of permanently storing data for periods of at least 30 days.

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