Patent ID: 7653768
Filing Date: 2010-01-26
Classification: H04L

Abstract:
1. A data transfer method for connecting a master unit on an upstream side and a plurality of slave units on a downstream side in series with a serial bus by a daisy chain system, and transferring data having an appended error check code or error correction code between a data transmitter and a data receiver, said data transfer method comprising: transferring said data along said serial bus through a first circuit in at least one said slave unit, which is located between said data transmitter and said data receiver, from said data transmitter to said data receiver without performing an error check or error correction of said data; performing said error check of said data by a second circuit provided in said at least one slave unit which is located between said data transmitter and said data receiver, wherein said second circuit is different from the first circuit through which said data flows; and informing a result of said error check, which includes information identifying the slave unit where an error occurred, to said master unit individually by said at least one slave unit which has performed said error check of said data.