Patent ID: 8549338
Filing Date: 2013-10-01
Classification: G06F,Y02D

Abstract:
1. A recording device that can detect a first event and a second event, wherein the second event occurs within a data capture window of the first event, comprising: a first memory partitioned into a plurality of first segments; a second memory partitioned into a plurality of second segments; an address logic circuit coupled to the first memory and to the second memory, the address logic circuit controlling read and write locations for data stored to the first memory and to the second memory an energy management system coupled to the second memory, the energy management system controlling a power state of the second memory, a data bus coupled to the first memory and the second memory; wherein a selected segment of the first memory acts as a circular buffer and real-time data received on the data bus is stored to the selected segment, a processor coupled to the address logic circuit, the energy management system, and the data bus, the processor monitoring data received on the data bus and identifying designated events having at least the first event and the second event, wherein the processor sends an event trigger to the address logic circuit and to the energy management system upon detection of a designated event including at least the first event, wherein the energy management system supplies power to the second memory upon detection of the first event trigger, and wherein the address logic circuit causes data to be stored to the second memory upon detection of the first event trigger without looping or overwriting the first memory of the first memory for the duration of a data-capture window of the first loop, wherein the processor is further configured to maintain a pointer to mark the beginning of second event data that overlaps within a data-capture window of the first event, wherein the first memory continues to record incoming data for the duration of the second event capture window with looping or overwriting the first memory, and wherein, after capturing the second event data in the data capture window, the second memory is powered on and the second even data is transferred to the outer memory.