SPIKE-SHAPED NOISE ELIMINATING METHOD IN CASE OF DATA TRANSMISSION

摘要

PURPOSE:To eliminate effectively a spike-shaped noise generated on a receiving data by a transmission code error, by calculating a difference absolute value of the past digital data and the present digital data, and comparing it with an absolute value which has been determined in advance. CONSTITUTION:The i-th and the i+1-th receiving data Si, Si+1 are stored in the X-th and the Y-th storage areas of a storage means 12 under a control of an input control means 11. In an operating means, these two data are read out from the storage means 12, a difference absolute value operation is executed, and its value is sent to a deciding means 14, and a size relation to a processing condition value which has been set beforehand is compared/decided. By a result of the decision, an output control means 15 controls an output of a data which has been stored in the X or Y area of the storage means 12. The result of the decision is sent simultaneously to the input control means 11, too, and the input control means 11 controls the next i+2-th data Si+2 to be stored newly in the X or Y area of the storage means 12.