Patent ID: 7644208
Filing Date: 2010-01-05
Classification: G06F

Abstract:
1. In a serial transmission system in which interfaces of a plurality of terminals are connected in series to a data bus line connected to a host, a terminal of said plurality of terminals which is located at the farthest position from said host has a return signal generator section, and data transmitted from the host to each terminal or from each terminal to the host is transmitted through the interfaces, a data transmission method comprising: (a) a step of said return signal generator section transmitting a return signal at a timing when data transmitted from said host to the terminals arrives at the terminal located at the farthest position; and (b) a step of returning the return signal to said host passing successively through the interfaces of the terminals connected to said data bus and a specified terminal transmitting data to be transmitted to said host in synchronization with said return signal.