Abstract: Systems, methods, and circuitries are disclosed for generating and storing event data records. In one example, a method includes, for each of a plurality of monitored parameters, controlling a memory controller to write pre-event system data from a controller memory to a buffer in a non-volatile memory. In response to detection of an event, for each of the plurality of monitored parameters, the method includes controlling the memory controller to write post-event system data occurring during a post-event time window from the controller memory to an event data record for the event in the non-volatile memory; and controlling the memory controller to copy pre-event system data for each monitored parameter from the buffer to the event data record for the event, wherein, writing of post-event system data and copying of pre-event system data are performed concurrently.

Abstract: A remote entry system for a vehicle includes a portable transmitter and a vehicle-mounted receiver. The receiver alternates between a monitoring state lasting for a monitoring period and a sleep state lasting for a sleep period. A remote control is manually activated and a message sequence is transmitted to the receiver in response to the manual activation for initiating a function of the remote entry system. The message sequence comprises a plurality of blocks transmitted at a predetermined block interval, the blocks including a preamble block and at least one message block. If the receiver detects the preamble block then it enters a reception state for detecting the message block. The preamble block has a predetermined preamble length and is comprised of a plurality of bytes separated by respective off intervals between successive bytes. Each off interval comprises a predetermined off period greater than the predetermined byte period.