Data transmission system
US4208650A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1978 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Jan 30, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A data transmission system is provided for transmitting data over a communication link extending between a transmitter and a receiver. The transmitter is connected to a data containing unit and operates through a data cycle which addresses the data unit to provide a plurality of serially arranged message frames during each data cycle. Each message frame includes a marker bit, a sync word, data words having either digital or analog information, address and error words, a checkword, and various parity and start bits. The receiver, which is connected to another data unit, is adapted to recognize each message frame by means of the marker bit and the sync word, and evaluate the message validity by means of the parity and start bits, and the checkword. The data received in each verified message frame is then used to update a portion of the other data unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.