| 摘要 |
PURPOSE:To make a circuit constitution simple by adding the data multiplying by (n) the correct data before one sample of continuous errors and the correct data after one sample of the continuous errors to the (n) continuous errors, and dividing the result by n+1. CONSTITUTION:Data to be inputted are D0, D1, D2, D3... and an error is presumed to occur at D1. The data are successively inputted, D3 is held at a latch A, D2 is held at B, D1 is held at C and D0 is held at D, and then, an error deciding circuit 3 decides that the data are one error by the error flag of the latch C. As the result, a data selecting circuit 4, is controlled by a deciding circuit 3, selects a (b) side, a data selecting circuit 9 selects an (a) side, the output of a dividing circuit 10 selects 1/2 dividing at the (a) side and a multiplying circuit 7 outputs the value which multiplys D0 by one. Since they are selected as mentioned above, the output (D0+D2) of the dividing circuit 10 is inputted to the latch D. Thus, error data D1 is corrected on the average by the data in front and in the rear. Thus, since the circuit is composed of the multiplying circuit, adder circuit 8 and dividing circuit only, the scale is reduced. |
