Data conversion method and apparatus

Details Data conversion method and apparatus Data conversion method and apparatus

1996-08-28

1998-10-13

Hoff, Marc S.

Coded data generation or conversion

Digital code to digital code converters

341 51, 341 61, H03M 700

Patent

active

058218823

ABSTRACT:
According to a data conversion method and apparatus, an original signal is wavelet-transformed with a desired expansion count to generate transformed data. The transformed data is corrected such that a difference between the original signal and a value obtained by inversely wavelet-transforming the transformed data falls within a desired tolerance range, thereby generating the corrected transformed data as compressed data in which the original signal is compressed.

REFERENCES:
patent: 5365271 (1994-11-01), Asano
patent: 5412741 (1995-05-01), Shapiro
patent: 5495292 (1996-02-01), Zhang et al.
patent: 5619998 (1997-04-01), Abdel-Malek et al.
"ECG Data Compression Techniques--A Unified Approach", IEEE Transactions on Riomedical Engineering. vol. 17. No. 4, Apr. 1990.
"ECG Data Compression by Using Wavelet Transform", IEICE Trans, Inf. & Syst., vol. E76-D, No. 12 Dec. 1993.

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