Image analysis – Image transformation or preprocessing – Multilayered image transformations
Reexamination Certificate
2005-05-03
2005-05-03
Tran, Phuoc (Department: 2621)
Image analysis
Image transformation or preprocessing
Multilayered image transformations
C382S240000
Reexamination Certificate
active
06888970
ABSTRACT:
An ASIC-implemented wavelet transformation engine (circuit) providing a wavelet filter is described. The wavelet filter itself provides up to a 9-stage FIR (finite impulse response) filter with symmetrical coefficients. The architecture of the filter includes data inputs, a bank of shift registers (register bank), coefficient registers, a multiplier/accumulator, a sub-sampling component, and output (results) registers. The filter provides a wavelet-based compression solution that may be implemented in less-costly, page-based memory architecture (e.g., SDRAM), and does so in a manner that overcomes the inherent speed disadvantage encountered due to the horizontal-optimized access strategy employed by page-based memory architectures.
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Blakely , Sokoloff, Taylor & Zafman LLP
LightSurf Technologies, Inc.
Szepesi Judith A.
Tran Phuoc
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