Serial bus communications system
US6463543B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1999 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Aug 3, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic system having a central controller coupled to a plurality of remote transceiver modules by means of a serial bus. The modules are designed to remain in a sleep mode in which they consume no power until such time as a wakeup signal is sent over the bus by the central controller. Each module includes a source of power and power supply circuitry adapted to provide power for operating the module when the power supply circuitry is connected to the source of power. Each module further includes an energy detector coupled to the bus and adapted to connect the power supply circuitry to the source of power upon detection of energy, in the form of the wakeup signal, on the bus. Within each module is a microprocessor which responds to the provision of power by maintaining the connection between the source of power and the power supply after the wakeup signal has terminated and until such time as the module completes its assigned task.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.