| 摘要 |
A code state determining method for spectral-null type trellis code of which the number of states of start points and end points of code words is restricted to two or more is disclosed, that comprises the step of determining states of end points of code corresponding to a state-determination state transition diagram of which prohibited output code is newly assigned as an additional path to a code output prohibited state of a state transition diagram having a particular restriction with respect to a cumulated value.
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