Audio signaling training for bidirectional communications
US9141950B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2015 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Feb 12, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/77
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
Aspects of the subject disclosure provide a card reader for receiving payment card information at a mobile point-of-sale terminal. In some implementations, a reader of the subject technology can include a memory, a conditioning module and a 3.5 mm audio plug including an audio bus that is configured for insertion into a headphone port of a host device, such as a smart phone or tablet computer. Implementations of the subject technology also include a microprocessor configured to perform operations for tuning communication parameters. That is, upon connection of the reader device to the host computing device, the devices can engage in an exchange of carrier waves which the devices exchange can used to not only determine and negotiate operational parameters for the devices that support a highest possible connection speed with acceptable connection quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.