DEVICE FOR USE AS STAND-ALONE DEVICE AND AS SLAVE

专利名称：DEVICE FOR USE AS STAND-ALONE DEVICE

AND AS SLAVE DEVICE IN A DATA BUSSYSTEM

发明人：WAUTERS, Piet, S.,LENAERTS, Jean, L., L., J.申请号：EP00929443.0申请日：20000425公开号：EP1092194A1公开日：20010418

摘要：A device is provided for use in a data bus system like a USB bus system. Thedevice (14) can be coupled to a host (10) via a bus cable (12) that comprises a datatransfer conductor (124) and power supply conductors (120-122). The device (14) detectswhether a power supply is connected to the power supply conductors (120-122).

Dependent on whether or not connection of the power supply has been detected, device(14) starts operating in a slave mode or in a stand-alone mode respectively. In a slavemode the device (14) waits for commands received via the data transfer conductor. In thestand-alone mode the device (14) operates independent from communication via thecable. Preferably, the device signals back to the host whether it is in the slave mode byenabling pull-up of a potential of the data transfer conductor (124). In an embodiment,detection and signaling is controlled via a single control node (149).

申请人：Koninklijke Philips Electronics N.V.

地址：Groenewoudseweg 1 5621 BA Eindhoven NL

国籍：NL

代理机构：de Haas, Laurens Johan

更多信息请下载全文后查看