| 摘要 |
PURPOSE:To attain low speed operation independently by synchronized/ asynchronized sample rate fS, Baud rate fB with each other by using a rate converting filter inputting a sample value series of the fS and outputting a sample value series interpolated with the fB as an interpolation filter so as to provide a time delay to the said filter. CONSTITUTION:A sample circuit 1 samples an input signal of a transmission period TB at a period of TS. A rate conversion filter circuit 2 outputs the 1st and 2nd interpolation values being the result of delay and interpolation of the input to the circuit 1 at each start pulse of a reference time generating circuit 5 according to the 1st and 2nd delay time amount outputted from an operating section 4. An error detection section 3 uses the said interpolation to output a surplus/deficient value DELTAT of the 1st delay amount. The operating section 4 inputs the output DELTAT and outputs the DELTAT and the 2nd delay time amount DELTAT+TB/2. The circuit 5 inputs the DELTAT and applies a start pulse to the filter 2 at a period of TB+DELTAT based on the period TS. |
