Patent ID: 7159058

Claim:
A state indicating information setting circuit, comprising: a first state holding part for inputting thereto a signal indicating either a predetermined first state or a predetermined second state, holding the state indicated by said signal input and outputting said state; a second state holding part for inputting thereto the signal output from said first state holding part, holding the state indicated by said signal input and outputting said state; a first state comparing part inputting thereto a predetermined state detection signal and the signal output from said second state holding part, and outputting a signal indicating said predetermined first state to said first state holding part when the respective states indicated by the respective signals input are different from one another, and outputting a signal indicating said predetermined second state when these states are same as one another; a second state comparing part comparing the states of the respective signals output from said first state holding part and said second state holding part, and outputting a signal indicating said predetermined second state as a state detection signal clearing signal when the respective states indicated by said input signals are different from one another; and a third state comparing part comparing the states of the respective signals output from said first state holding part and said second state holding part, outputting a state detection signal indicating said predetermined first state when said states of the respective signals input are different from each other, and outputting the state non-detection signal indicating said predetermined second state when said states are same as one another.