Patent ID: 7774112
Filing Date: 2010-08-10
Classification: G07C

Abstract:
1. A system for acquiring aircraft parameters data, the system comprising: a data acquisition unit configured to sample an aircraft parameter during a first sampling period; and sample the aircraft parameter during a plurality of subsequent sampling periods consecutively following the first sampling period; and a flight data recorder in communication therewith wherein the flight data recorder is configured to record the aircraft parameter's full value sampled during the first data period and record a change between the aircraft parameter's value sampled in one of the plurality of subsequent sampling period and the aircraft parameter's value sampled in a previous sampling period; and wherein a sampling function of the data acquisition unit is disassociated from a data recording function of the flight data recorder; wherein the flight data recorder allocates a volume of storage for recording the aircraft parameter over a sampling frame comprising at least one sampling period according to: wherein “S” is a predetermined number of samples over the sampling frame, “B” is a predetermined number of bits for recording the full actual value of the aircraft parameter, and “b” is the number of bits required to record the change between the aircraft parameter's value in a current sampling period and its value in a previous sampling period, and wherein “b<B”.