A method for data storage includes storing data in a group of memory cells, by encoding the data using at least an outer code and an inner code, and optionally inverting the encoded data prior to storing the encoded data in the memory cells. Each CMOS image sensor includes phase-locked loop circuitry. The genes, gene products and agents of the invention are also useful for monitoring the effectiveness of prevention and treatment of AMI and CHD. The system is optimized after the redundant reset circuitry has been removed. The coefficient for the ellipse can be updated over time. The controller sets a default time schedule for enabling the wireless transceiver.