Data recording and playback system and method

Abstract

A data recording and playback system and method with a memory device adapted to receive and temporarily store input signal data as data frames with time stamps, the memory device having addresses associated thereto, and a circular storage buffer having a memory mapped file with same address space as the memory device for storing the input signal data. In one embodiment, an event controller provides an event signal associated to time of an event, and an event processor is provided that copies plurality of data frames stored in the circular storage buffer that have time stamps proximate to the time of the event. Another embodiment is adapted to allow playback of stored input signal data from the circular storage buffer without interrupting simultaneous recording of new input signal data into the circular storage buffer.

The claimed invention is: 
     
         1 . A method of recording and playing recorded data, the method comprising:
 receiving an input data signal with a monitoring device;   receiving and temporarily storing the input signal data from the monitoring device in a memory device as data frames with time stamps, each data frame including one time stamp, and the memory device having addresses associated thereto, and the data frames having a dynamic frame size;   receiving the temporarily stored input signal data from the memory device in a circular storage buffer, the circular storage buffer having a memory mapped file with same address space as the memory device; and   storing the input signal data in the memory mapped file of the circular storage buffer.