Feedback device
US7551060B1 · kind B1 · utility
7Cited by
2References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2005 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Apr 12, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07G1/12
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A feedback device 1 including an interface 2 for receiving a first signal 3 from a point of sale console 4. A processor 5 is responsive to signal 3 for selectively defining a second signal, in the form of an inaudible ultrasonic transmission 6. An output, in the form of an ultrasonic transducer 7, is responsive to processor 5 for propagating transmission 6 to provide only in a predetermined spatially defined transmission zone 8 an audible signal 9 indicative of signal 3. Signal 9 is substantially inaudible outside of zone 8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.