"Cyclic Shift Device, Cyclic Shift Method, Ldpc Decoding Device, Television Receiver, And Receiving System"

Abstract: The present invention relates to a cyclic shift device, a cyclic shift method, an LDPC decoding device, a television receiver, and a reception system, whereby reduction in size of a device can be realized. With a cyclic shift device 33 including a barrel shifter 61 for performing cyclic shift with M pieces of input data as objects, in the event of cyclically shifting parallel data made up of N pieces of input data smaller than M pieces of input data by shift amount k less than N, a selecting circuit 62 selects and outputs first through N-k"th shift data #1 through #N-k that the barrel shifter 61 outputs, as first through N-k"th output data #1 through #N-k, and selects and outputs N-k+l+(M-N) through N+(M-N)fth shift data #M-k+l through #M that the barrel shifter 61 outputs, as N-k+1 through N"th output data #N-k+l through #N. The present invention may be applied to a case for performing cyclic shift.

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