Patent ID: 8560745

Claim:
A storage device comprising: a data storage section that stores data; a first control section that controls reading and writing the data from and into the data storage section; a communication section that is connected to a host device for processing data of the data storage section and for requesting the data storage section to read and write data; a second control section that transmits and receives the data to and from the first control section and the communication section; a wireless transmission/reception section that is directly connected to the first and second control sections respectively, is directed toward a predetermined direction, and wirelessly transmits and receives data to and from another storage device provided in the predetermined direction; the first control section including a first electro-optical conversion section that converts an electric signal as the data into an optical signal, and a first opto-electric conversion section that converts, into electric signals, optical signals that are transmitted from the second control section and the wireless transmission/reception section, the second control section including a second electro-optical conversion section that converts an electric signal as the data into an optical signal, and a second opto-electric conversion section that converts, into electric signals, optical signals that are transmitted from the first control section and the wireless transmission/reception section, a first transmission line that connects the first control section to the second control section and connects the first control section to the wireless transmission/reception section, the first transmission line being a first optical branching line including an optical branch section that branches the optical signal output by the first electro-optical conversion section into both directions to the second opto-electric conversion section of the second control section and to the wireless transmission/reception section; a second transmission line that connects the second control section to the first control section and connects the second control section to the wireless transmission/reception section, the second transmission line being a second optical branching line including an optical branch section that branches the optical signal output by the second electro-optical conversion section into both directions to the first opto-electric conversion section of the first control section and to the wireless transmission/reception section; and a housing including the data storage section, the first control section, the communication section, the second control section, the wireless transmission/reception section, the first transmission line, and the second transmission line.