Patent attributes
An interface device includes a conversion circuit that converts data that conforms to a first communication interface standard into data that conforms to a second communication interface standard, first and second flow control units that execute respectively a first flow control that conforms to the first communication interface standard on the first device, and a second flow control that conforms to the second communication interface standard on the second device, first and second communication circuits that receive data from and transmit data to the first device under control of the first flow control unit and the second device under control of the second flow control unit, respectively. Data is transmitted from the second to the first device in accordance with first and second credits used in the first and second flow controls, respectively, and a data amount associated with the first credit is equivalent to a data amount associated with the second credit.