Method and system for transmission of serial data
US4347609A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1980 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Aug 20, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for transmitting N-bit serial data (where N is a positive number) in the form of a bit serial, including a data sending circuit, a data receiving circuit and data transmission lines. The system includes a first data transmission line; a second transmission line; a transfer circuit, provided in the receiving means, for sending back to the data sending circuit through the second data transmission line, the bit content of received N-bit data each time one bit of the N-bit data is received through the first data transmission line; a comparison circuit, provided in the data sending circuit, for comparing the transmitted bit content and the bit content sent back on the second data transmission line; and a detection circuit provided in the data receiving circuit. The data sending circuit is adapted to transmit as a start bit a signal of a prescribed logical value before the N-bit serial data is sent, and, as an alarm bit, the results of the comparison after the N-bit serial data has been sent. The detection circuit detects whether the logical values of the start bit and the alarm bit are prescribed logical values, so that a transmission error or a break in a transmissi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.