Title:
対数ルックアップテーブル
Document Type and Number:
Japanese Patent JP2005500724
Kind Code:
A
Abstract:
In one embodiment, the invention is directed toward techniques for generating results in a logarithmic domain. The techniques may exploit properties of a logarithmic function to reduce the memory requirements needed to implement lookup tables. For example, the techniques may utilize non-uniform sampling over a logarithmic or logarithmic-like function to reduce the number of entries needed for a given lookup table. In particular, the techniques may involve separating a number into an exponent component and a mantissa component. Each of these different components can then be converted from a first domain to a second domain using different lookup tables.
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Inventors:
Challa, Ragu
Shindu Shayana, Nagabhushana Tea
Ragpasy, Arun
Shindu Shayana, Nagabhushana Tea
Ragpasy, Arun
Application Number:
JP2003514405A
Publication Date:
January 06, 2005
Filing Date:
July 16, 2002
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
G06F1/02; G06F1/03; G06F7/00; G06F7/523; G06F7/556; H04B1/16; H04B1/707; (IPC1-7): H04B1/707; G06F1/02; H04B1/16
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto