AIDING REAL-TIME PROCESSING INTEGRITY IN PORTABLE RADIOS UNDER POWER FAIL CONDITIONS
Original Publication Date: 1992-Dec-01
Included in the Prior Art Database: 2002-Jan-22
Modem land mobile radios are often equipped with microprocessors or other complex integrated circuits which require signiticant current in order to properly operate. When the power to these circuits is abruptly removed, any processing in progress is aborted. In the past, special support circuits were built to detect such power-loss conditions and supply the processor with volt- age long enough to ensure an orderly shut-down. These additional circuits were costly and required additional space in the products.