Methods and apparatus to encode and decode audio for shopper location and advertisement presentation tracking
US8508357B2 · kind B2 · utility
15Cited by
171References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2009 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Feb 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q30/02
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus to encode and decode audio for shopper location and advertisement presentation tracking are disclosed. A method for tracking a shopper includes receiving a first audio signal at a first location with a decoder attached to a shopping implement, determining a first code encoded in the first audio signal, receiving a second audio signal at a second location with the decoder, determining a second code encoded in the first audio signal, and transmitting the first code and the second code to a data retrieval device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.