Patent ID: 6349389
Filing Date: 2002-02-19
Classification: G06F,H04L

Abstract:
An image forming apparatus which has a first communication control apparatus for controlling a driving unit of said image forming apparatus via a second communication control apparatus, comprising:said first communication control apparatus for performing communication with said second communication control apparatus via a clock signal line and a data signal line, said second communication control apparatus receiving a clock from said clock signal line and simultaneously receiving predetermined data from said data signal line, and accordingly starting to receive a data string; first data transmission means, provided to said first communication control apparatus, for outputting the clock to said clock signal line and simultaneously outputting the predetermined data to said data signal line, and then outputting the data string to be transmitted; and second data transmission means, provided to said first communication control apparatus, for outputting the clock to said clock signal line independently of whether a communication abnormality is detected, and simultaneously outputting inverted data of the predetermined data to said data signal line to initialize said second communication control apparatus, wherein said second data transmission means outputs the clock and the inverted data at a predetermined time interval.