| 摘要 |
An interface for serial data communication, comprising: a power signal contact having an associated impedance; at least one data signal contact; and sensing means for automatically sensing a discrete change in the impedance associated with the power signal contact. A method of checking a serial data connection between a host and a peripheral that are not involved in a data communication session, the method comprising: sensing a discrete change in an impedance associated with a contact that is used, during a session, for transferring power from the host to the peripheral. |
