Communication device, communication system and communication method
US9800660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2014 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Oct 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0428
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication device according to the present invention aims to restart data transmission/reception between communication devices in a short amount of time, without performing key sharing again, even when a communication device of a transmitting side is rebooted. The communication device includes a volatile memory storing a count value, a generator generating data including a count value, a communicator transmitting data to another communication device, a storage instructor, each time the communicator transmits data, updating the volatile memory with a count value, and a nonvolatile memory. A count value is incremented each time the communicator transmits data, the storage instructor causes the nonvolatile memory to store a count value at certain intervals, and the generator, when the communication device is rebooted, includes in data a sum of a certain value and a count value stored in the nonvolatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.