Title:
COMPRESSION OF FLOATING-POINT DATA
Document Type and Number:
WIPO Patent Application WO/2013/003479
Kind Code:
A3
Abstract:
Compression of floating-point numbers is realized by comparing the exponents of the floating-point numbers to one or more exponent thresholds to classify the floating-point numbers into classes. The floating-point number is encoded using the compression type for its class. Each class is associated with an indicator. A compressed data packet contains an indicator array and encoded floating-point numbers. Alternatively, exponents, mantissas and signs of floating¬ point numbers are compressed. Differences between exponents are encoded by exponent tokens selected from a code table. The mantissa is encoded to a mantissa token having a length based on the exponent. Alternatively for a group of floating-point numbers, encoding the maximum exponent produces the exponent token and encoding each mantissa of the group produces mantissa tokens having a length based on the maximum exponent. Signs are encoded to produce sign tokens. Exponent tokens, mantissa tokens and sign tokens are packed in a compressed data packet.
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Inventors:
WEGENER ALBERT W (US)
Application Number:
PCT/US2012/044424
Publication Date:
March 07, 2013
Filing Date:
June 27, 2012
Export Citation:
Assignee:
SAMPLIFY SYSTEMS INC (US)
WEGENER ALBERT W (US)
WEGENER ALBERT W (US)
International Classes:
G06F7/38; H03M7/30
Domestic Patent References:
| WO2011029876A1 | 2011-03-17 |
Foreign References:
| US20110099295A1 | 2011-04-28 | |||
| US6701427B1 | 2004-03-02 | |||
| US6631392B1 | 2003-10-07 |
Attorney, Agent or Firm:
HAYNES, Mark, A. (P.O. Box 366Half Moon Bay, CA, US)
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