VITERBI DECODING APPARATUS FOR HDTV

摘要

Viterbi decoder for HDTV consists of a distance calculating means that calculates the present distance values and the survival path according to accumulating the previous distance value to each situation input values of the observation area; an optimum path calculating means that output the information relating to the survival path of the stage and the optimum survival path using the matrix values from the matrix calculating means; the path history calculating means that decides the output value in the observation area according to appointing the in/out pointer; and memory that output the input value of the encoder to the output value.