| 摘要 |
In this invention, signals are transported at high speed in a direction opposite the transport direction of a main high-capacity channel. A differential signal consisting of a first signal that contains a clock component is transmitted to an external device, via a channel, by a first transmission unit. A second transmission unit transmits a common-mode signal to the external device, said common-mode signal consisting of a second signal that contains a clock component, by superimposing said common-mode signal onto the channel. A state notification unit communicates with the external device via a pair of differential channels included in the aforementioned channel and uses a DC bias potential in at least one of said differential channels to notify the external device of the connection state of the apparatus containing this first transmission unit, second transmission unit, and state notification unit. |
