Pseudo barrel shifting for entropy encoding

Details Pseudo barrel shifting for entropy encoding Pseudo barrel shifting for entropy encoding

1997-06-02

1999-06-08

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

To or from packed format

H03M 700

Patent

active

059107839

ABSTRACT:
A method, system, and apparatus for performing encoding employing a pseudo-barrel shifting technique. An encoder is provided with a buffer of at least twice a maximum symbol size. The encoder enables a window of bits in the buffer to be written during any time period. A steering circuit in the encoder steers valid data bits of an incoming symbol into appropriate enabled bit locations in the buffer. A read-out circuit in the encoder reads a data block of the maximum symbol size from the buffer after a write causes a boundary crossing in the buffer.

REFERENCES:
patent: 5423010 (1995-06-01), Mizukami
patent: 5446916 (1995-08-01), Derovanessian et al.
patent: 5627991 (1997-05-01), Hose, Jr. et al.

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