发明名称 |
Universal display media exposure measurement |
摘要 |
Systems, methods and devices for gathering data concerning exposure of predetermined survey participants to billboards are provided. A portable transmitter is arranged to transmit a signal containing survey participant data, and a receiver located proximately to the billboard serves to receive the signal transmitted by the transmitter.
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申请公布号 |
US2004122727(A1) |
申请公布日期 |
2004.06.24 |
申请号 |
US20020329132 |
申请日期 |
2002.12.24 |
申请人 |
ZHANG JACK K.;CRYSTAL JACK C.;JENSEN JAMES M. |
发明人 |
ZHANG JACK K.;CRYSTAL JACK C.;JENSEN JAMES M. |
分类号 |
G06Q30/00;G09F27/00;(IPC1-7):G06F17/60;H04B7/00 |
主分类号 |
G06Q30/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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