发明名称 |
DEVICE FOR USE AS STAND-ALONE DEVICE AND AS SLAVE DEVICE IN A DATA BUS SYSTEM |
摘要 |
A device is provided for use in a data bus system like a USB bus system. The device can be coupled to a host via a bus cable that comprises a data transfer conductor and power supply conductors. The device detects whether a power supply is connected to the power supply conductors. Dependent on whether or not connection of the power supply has been detected, the device starts operating in a slave mode or in a stand-alone mode respectively. In a slave mode the device waits for commands received via the data transfer conductor. In the stand-alone mode the device operates independently from communication via the cable. Preferably, the device signals back to the host whether it is in the slave mode by enabling pull-up of a potential of the data transfer conductor. In an embodiment, detection and signaling is controlled via single control node. |
申请公布号 |
EP1092194(A1) |
申请公布日期 |
2001.04.18 |
申请号 |
EP20000929443 |
申请日期 |
2000.04.25 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
WAUTERS, PIET, S.;LENAERTS, JEAN, L., L., J. |
分类号 |
G06F13/38;G06F13/40;H04L29/00 |
主分类号 |
G06F13/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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