Data communication apparatus
US6717982B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2000 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Mar 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/1446
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A controller of a data communication apparatus according to the present invention stores information on each successful and unsuccessful data communication, a season, a data of the week, a time, and a data communication rate of the communication for each site in a data memory. The controller reads out a data communication rate at which a data communication succeeded from the data memory and directs a modem to conduct a communication at the data communication rate. A data communication is conducted at the directed data communication rate. These procedures ensure a secure link between sites and a secure data communication irrespective of a line distance between the sites etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.