Bus encoding/decoding method and bus encoder/decoder

Details Bus encoding/decoding method and bus encoder/decoder Bus encoding/decoding method and bus encoder/decoder

2009-01-28

2011-12-27

Lauture, Joseph (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from minimum d.c. level codes

C341S059000

Reexamination Certificate

active

08085172

ABSTRACT:
An encoding method and an encoder for encoding data transmitted in a manner of bursts via a parallel bus and a decoding method and a decoder. The encoding method includes organizing data of the bursts into matrixes, determining for each of the matrixes whether a transform mode capable of decreasing the bus transition number exists, determining that the matrix needs to be transformed, determining a transform mode for transforming the matrix, and replacing the initial matrix with the transformed matrix. Then, forming a new matrix to be transmitted from matrixes which do not need to be transformed and matrixes which have been transformed. Thereafter, first generating a transform information word indicating transform states of the respective matrixes and then attaching the transform information word to the matrix to be transmitted to form an encoded matrix for actual transmission.

REFERENCES:
patent: 7899961 (2011-03-01), Kao
M. R. Stan and W. P. Burleson, “Bus-Invert Coding for Low-Power I/O”, IEEE Transactions on VLSI, vol. 3 issue 1, Mar. 1995, pp. 49-58.

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