Data transmission system
US4694293A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1985 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Sep 16, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/403
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data transmission system comprises a transmitter and a plurality of serially connected receivers. The transmitter, when energized, outputs an initialization signal to all of the receivers and also outputs a data of a predetermined value to the first receiver. In response to the initialization signal, the first receiver stores the received data in a register and modifies the received data to output a modified data to the second receiver. The second to last receivers operate in the same manner, so that different data are stored in the respective registers of the receivers. To transmit a given data to a selected one of the receivers, the transmitter outputs the given data with an identification code equal to the data stored in the register of the selected receiver. Although each of the receivers compares the received identification code with the contents of the register, only the selected receiver outputs a coincidence signal and stores the received data into a data utilization circuit thereof. A transmitter of a modified data transmission system outputs a given data together with an identification code which includes a bit of "1" at a bit position corresponding to the position of t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.