Information transmission system for transmitting a digital information signal divided into packets with an information signal error diagnosis and correction function
US5430738A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1991 |
| Grant date | Jul 4, 1995 |
| Priority date | — |
| Expiry date | Dec 18, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/28
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An information transmission system includes a base station in which a digital information signal is divided into packets of a predetermined amount of information of a same type, a packet identification signal is inserted into each of the packets, the packet identification signal indicating the total number of consecutive packets carrying packet information of the same type and a packet number specifying an associated packet among the consecutive packets, and the packets are transmitted. The system includes a relay station, in which diagnosis data of an erred information signal is stored in a memory, and the diagnosis data is transmitted to the base station in response to a diagnosis return instruction sent from the base station. According to a further aspect of the invention, an error correction code is added to each packet and an error correction code for an identification code including a relay station pointing code is also added in the base station. In relay stations, error correction of the identification code is performed before the error correction of the packets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.