| 摘要 |
<p>PROBLEM TO BE SOLVED: To independently perform a power saving operation so as not to affect a repeater operation on a serial bus interface where a plurality of devices are connected by cascade connection. SOLUTION: Between devices such as digital cameras and printers subjected to cascade connection by using an IEEE 1394 serial bus interface, an IC 2401 obtained by making both a physical layer used inside the devices and a link layer to be one chip is used to shit and return to individual modes such as a sleep mode, a suspend mode and a shutdown mode as power saving control of the devices when a standby state continues for a fixed time.</p> |
