MULTI-LEVEL ANALOG RECORDING AND REPRODUCING SYSTEM OF A PLURALITY OF MESSAGES HAVING MEMORY ARRANGEMENT IN WHICH CONSTITUTION FOR ANALOG AND DIGITAL MEMORY AND SERIAL COMMUNICATION IS AVAILABLE

摘要

PROBLEM TO BE SOLVED: To provide integrated digital and analog memory in a recording and a reproducing device having an efficient bus interface. SOLUTION: An analog processing circuit processes analog data. A storage circuit comprises non-volatile memory arrangement, a exchange circuit, and a communication interface. The non-volatile memory arrangement stores analog data and digital data. The change circuit inputs analog data and digital data to the memory arrangement and transfers it from there. An external device can exchange information with the device through the communication interface.