Circuit for and method of encoding a data stream

Details Circuit for and method of encoding a data stream Circuit for and method of encoding a data stream

2007-11-06

2007-11-06

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

C382S246000

Reexamination Certificate

active

11404411

ABSTRACT:
A circuit for encoding a data stream is described. The circuit comprises a non-zero count circuit coupled to receive the data stream and output a count of non-zero coefficients of a block of data of the data stream; a trailing ones detection circuit coupled to receive the data stream and output a number of trailing ones of the block of data; and a memory coupled to the non-zero count circuit and the trailing ones detection circuit and storing encoded data values, the memory outputting an encoded data value for a non-zero coefficient of a block of data based upon the count of non-zero coefficients and the number of trailing ones for the block of data. A method of encoding a data stream is disclosed.

REFERENCES:
patent: 6646578 (2003-11-01), Au
patent: 2005/0135691 (2005-06-01), Reese
Fedele, Nicola, J., “A Circuit For And Method of Decoding A Data Stream”, U.S. Appl. No. 11/404,324, filed Apr. 14, 2006, 29 pages, available from Xilinx Inc., 2100 Logic Drive, San Jose, CA 95124.

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