Generating bit-streams with higher compression gains

Details Generating bit-streams with higher compression gains Generating bit-streams with higher compression gains

2007-05-15

2007-05-15

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S156000

Reexamination Certificate

active

10574442

ABSTRACT:
A system (10) and method that generate bit-streams that result in higher compression gains. The system is akin to a normal 1-bit SDM. Internally, the system (10) tries to find the best possible bit sequence by tracing N possible solutions at every time instant. In an implementation, the system has N>I trellis path structures (20). Every path is used to track a possible output bitstream. The quality of a bitstream is determined by measuring the (frequency weighted) difference between input and output; it is this measure that is reduced or minimized.

REFERENCES:
Generalized Predictive Trellis Coded Quantization of Speech by Michael W. Marcellin of the Deparment of Electrical & Computer Engineering, The University of Arizona Tucson, AZ; & Thomas R. Fischer of the Department of Electrical and Computer Engineering, Washington State University Pullman, WA. (date unknown).

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