Title:
署名を生成する方法及び装置
Document Type and Number:
Japanese Patent JP2011521272
Kind Code:
A
Abstract:
Signaturing methods and apparatus as described. An example method includes applying a first function to a portion of digital data to produce a first windowed block, applying a second function different from the first function to the same portion of the digital data to produce a second windowed block, determining a first characteristic of a band of frequencies in the first windowed block, determining a second characteristic of the band of frequencies in the second windowed block, comparing the first characteristic to the second characteristic, and assigning a signature bit representative of the portion of the digital data based on the comparison of the first characteristic and the second characteristic.
Inventors:
Topiti Alexander Pavlovich
Ramas Whammy Alan
Srinivasan Benugopal
Ramas Whammy Alan
Srinivasan Benugopal
Application Number:
JP2010549634A
Publication Date:
July 21, 2011
Filing Date:
November 06, 2008
Export Citation:
Assignee:
The Nielsen Company (US) LRC
International Classes:
G10L11/00; H04H20/31; H04H60/31; H04H60/37; H04H60/58; H04H60/66
Domestic Patent References:
| JP2004519015A | 2004-06-24 | |||
| JP2003512779A | 2003-04-02 |
Foreign References:
| WO2007066450A1 | 2007-06-14 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office