| 摘要 |
PROBLEM TO BE SOLVED: To provide a cyclic code circuit without need of increasing frequency even to an application which needs simultaneous processing of a plurality of bits. SOLUTION: This cyclic code circuit is provided with: exclusive OR circuits (XOR) groups (11 to 21) of the pieces expressed by A*(2<SP>B</SP>-1-B); a barrel shifter 23 which inputs initial data and output of the exclusive OR circuits and outputs data of C bit selected by an address signal; and an address generator 22 which outputs the address signal, in order to simultaneously output cyclic codes expressed by a generator polynomial expressed by using an added number A and the maximum degree B by every C bit. COPYRIGHT: (C)2006,JPO&NCIPI
|
