The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 2014
Filed:
Jul. 28, 2009
Yukihiko Mogi, Kanagawa, JP;
Yukihiko Mogi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A mantissa/exponent splitter splits an input value X=(1+X/2)×(2^X) into a mantissa Xand an exponent X. An interpolation processor references the mantissa/exponent splitter using the mantissa Xand determines a power value (log(1+X/2)) through an interpolation process. A logarithmic calculator determines a logarithmic value Z=logX=Y(X+log(1+X/2)) from the exponent Xand the power value from the interpolation processor. The integer/fraction splitter splits the logarithmic value Z into an integer Zand a fraction Z. The interpolation processor references a power of fraction table storage unit in response to the fraction Zand determines a power value (2^Z) through the interpolation process. The power calculator determines X=2^Z=(2^Z)×(2^Z), thereby resulting in the input value X to the power of Y.