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发明名称
Gathering research data
摘要
Methods and systems are provided for gathering research data. Frequency domain data is received or produced, a signature is extracted from the frequency domain data and an ancillary code is read from the frequency domain data.
申请公布号
US7908133(B2)
申请公布日期
2011.03.15
申请号
US20070805075
申请日期
2007.05.21
申请人
ARBITRON INC.
发明人
NEUHAUSER ALAN R.
分类号
G10L19/00;G10L15/00;G10L21/00;H04B1/00;H04B1/06;H04B1/69;H04B17/00;H04H60/31;H04H60/37;H04H60/58;H04H60/65;H04N
主分类号
G10L19/00
代理机构
代理人
主权项
地址
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