Patent ID: 7975085

Claim:
A signal processing device which controls a plurality of signal processing units via a control line with narrow bandwidth or a signal line with wide bandwidth, the signal processing units being configured to process an input signal inputted via the signal line, comprising: storing means for storing correspondence information that associates instruction information indicating an instruction of control with respect to each of the signal processing units, with control information related to all of the plurality of signal processing units, among pieces of control information necessary for each of the signal processing units to execute content of control; determining means for determining whether to transmit the control information via the control line or the signal line based on the correspondence information stored in the storing means; and transmitting means for transmitting the control information associated with the instruction information by the correspondence information, to the plurality of signal processing units via the signal line or the control line based on the determination of the determining means, when control is instructed with respect to the plurality of signal processing units.