Method of transmitting information between two units each provided with means for sending and/or receiving signals
US7295526B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2003 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Dec 23, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The method is one of wireless transmission of information between two units consisting primarily of a portable object, such as a personalized watch (1), and a computer station (20). Each unit includes signal transmitting and/or receiving means (2, 24, 26) switched alternately to a transmitting mode and into a receiving mode. Information is transmitted by transmitting a plurality of information frames alternately between the two units. Each information frame comprises a synchronization field, which includes a particular number of synchronization bytes, an information packet and filler bytes. On receiving a frame, the receiving unit counts the synchronization bytes. The receiving unit transmits, in a heading of the information packet, a synchronization indication which is a function of the number of synchronization bytes received. The synchronization indication is used to correct the size of the synchronization field of the next frame received by the receiving unit. These synchronization field size correction operations are effected in a similar manner in both units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.