| 摘要 |
PURPOSE:To correct a pulse count difference longer than the address length of a memory by detecting the pulse count difference between a reference signal and a non-reference signal, correcting the count difference when the difference exceeds a prescribed constant and setting the corrected address. CONSTITUTION:A write processing circuit (WC) 1 writes a reference signal DAI to a memory 4 and the WC3 writes a non-reference signal DBI to a memory 5. A pulse count difference detection circuit 6 detects the count difference of pulses between a reference signal DAO read by a read processing circuit (RC) 2 from the memory 4 with the non-reference signal DBO from the memory 5 and provides the output of an error signal when the detected count difference is larger than a prescribed constant. A pulse count start decision circuit 8 receives an error signal from the circuit 6 to decide the error signal, the start signal of correction count and the operation signal. An address setting means 7 makes the correction of the pulse count difference from the circuit 6 to set the corrected address. |
