Adaptive information compression

Details Adaptive information compression Adaptive information compression

2006-05-02

2006-05-02

Chin, Stephen (Department: 2634)

Pulse or digital communications

Bandwidth reduction or expansion

C375S316000, C375S340000, C370S210000, C370S310000, C704S500000

Reexamination Certificate

active

07039105

ABSTRACT:
An adaptive information compression system and method conserves information bandwidth or storage space by compressing underutilized information present in a wide-band signal into a much narrower maximum utilized information band signal. This is achieved by obtaining a spectral concentration map of an input wide-band signal by transforming the wide-band signal into the frequency domain and de-selecting the data space where there is substantially little spectral activity. A narrow-band signal is created by reformatting the remaining data space into a contiguous narrow-band signal. The original time-domain image of the data, which has the inactive spectra removed, is reconstructed from the narrow-band signal, thus allowing the total time-domain bandwidth to be significantly less than the original.

REFERENCES:
patent: 4316282 (1982-02-01), Macina
patent: 5590156 (1996-12-01), Carney
patent: 5638406 (1997-06-01), Sogabe
patent: 6401062 (2002-06-01), Murashima
patent: 6690657 (2004-02-01), Lau et al.

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