| 发明名称 | Methods and apparatus for generating signatures | ||
| 摘要 | 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. | ||
| 申请公布号 | US9326044(B2) | 申请公布日期 | 2016.04.26 |
| 申请号 | US201314074499 | 申请日期 | 2013.11.07 |
| 申请人 | The Nielsen Company (US), LLC | 发明人 | Topchy Alexander Pavlovich;Ramaswamy Arun;Srinivasan Venugopal |
| 分类号 | H04H60/58;G11B27/28;G06F17/30;H04N21/442;H04N21/8358;G10L25/48;H04H60/66;H04H60/37 | 主分类号 | H04H60/58 |
| 代理机构 | Hanley, Flight & Zimmerman, LLC | 代理人 | Hanley, Flight & Zimmerman, LLC |
| 主权项 | 1. A method, comprising: 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. | ||
| 地址 | New York NY US | ||