Bi-directional protocol
US6512463B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1999 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Mar 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q9/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A protocol for utility meter interrogation has a data write portion including: assembling a password transmission sequence having a synchronization string and a message including identification indicia for a select utility meter and a password to activate a select data access level within the select utility meter. This is wirelessly transmitted a first time to a select utility meter. Then, the password transmission sequence is wirelessly transmitted a second time to the select utility meter to confirm the password transmission sequence. A command transmission sequence having the synchronization string and a message including the identification indicia and a write command is assembled to cause the select utility meter to store data in a memory location of the select utility meter corresponding to the data access level activated with the password. The command sequence is then wirelessly transmitted to the select utility meter two times to confirm the command transmission sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.