CABLE WITH MULTIPLE FUNCTIONS

摘要

A cable for establishing different communications between the cable, a first external device, and a second external device. The cable includes a first connector, a second connector, a controlling unit, a switching unit, a rectification unit, and a storage unit. The controlling unit generates different controlling signals to the switching unit based on a bus power from the first external device and an identification signal from the second external device. The rectification unit ensures a current direction from the first external device to the second connector when the bus power is supplied. In a first function, the switching unit establishes a communication between the first external device and the second external device; in a second function, the switching unit establishes a communication between the first external device and the cable, and in a third function, the switching unit establishes a communication between the second external device and the cable.

主权项

1. A cable capable of switching between different functions for establishing different communications between the cable, a first external device, and a second external device, the cable comprising:
a first connector configured to connect with the first external device; a second connector configured to connect with the second external device; a controlling unit connected between the first connector and the second connector, and configured to generate different controlling signals based on a bus power from the first external device and an identification signal from the second external device; a switching unit connected with the first connector, the second connector, and the controlling unit for establishing different connections in response to different controlling signals; a rectification unit connected between the first connector and the second connector, and configured to ensure that a current direction is from the first external device to the second connector when the bus power is supplied by the first external device; and a storage unit connected to the switching unit and configured to selectively communicate with one of the first external device and the second external device; wherein when the switching unit establishes a communication between the first external device and the second external device, the cable switches into a first function; when the switching unit establishes a communication between the first external device and the storage unit, the cable switches into a second function; and when the switching unit establishes a communication between the second external device and the storage unit, the cable switches into a third function for transmitting data.