Signal processing apparatus

A signal processing apparatus for receiving a time divisional multiplexed signal including a plurality of kinds of data, said signal processing apparatus comprising:

• switching signal generating means for identifying a type of each of a plurality of kinds of data received as part of said time divisional multiplexed signal, wherein said identification is based on information in a header of said time divisional multiplexed signal, said switch signal generating means generating a signal containing the type of data;
• memory means for storing each of said plurality of kinds of data to one of a plurality of memory areas according to the identified type;
• processing means for executing one of a plurality of functional operations corresponding to the type of data of said time divisional multiplexed signal read from said plural memory areas at certain timing;
• memory input/output control means for selecting the area for storage in said memory means of a type of data in accordance with its identified type, retrieving from said memory means the stored data to be read by said processing means and supplying to said memory means data generated by said processing means after execution of one or more of the plurality of functional operations;
• and
• changing means for changing the operation of said processing means to one of said plurality of functional operations, corresponding to the type of data at the timing of the transit of said data to the processing means.