Dual USB port device
OwnerKarl Keppelerinventor
Life of this patent
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Abstract
Described is a system which includes a first device connected to a second device via a USB cable. The cable has a first USB connector and a second USB connector. The first device includes a first USB port, a second USB port and a voltage detector coupled to the second port. The detector detects a voltage at the second port. The first port is configured to accept the first connector and the second port is configured to accept the second connector. The second device includes at least one of a third USB port and a fourth USB port. The third port is configured to accept the first connector and the fourth port is configured to accept the second connector. The first device switches operation between a host state and a client state based on the detected voltage at the second port.
Claims20
A device, comprising:
- a processor;
- a first USB port coupled to the processor;
- a second USB port coupled to the processor;
- and
- a voltage detector coupled to the second port and the processor, the detector detecting a voltage at the second port,
- wherein the processor switches operation of the device between a host state and a client state based on the detected voltage.
A method, comprising:
- detecting a voltage by a voltage detector of a device, the device including at a first USB port and a second USB port, the voltage being detected at the second port;
- and
- switching an operation of the device between a host state and a client state based on the detected voltage.
A system, comprising:
- a USB cable having a first USB connector and a second USB connector;
- a first device having a first USB port, a second USB port and a voltage detector coupled to the second port, the detector detecting a voltage at the second port, the first port being configured to accept the first connector and the second port being configured to accept the second connector;
- and
- a second device having at least one of a third USB port and a fourth USB port, the third port being configured to accept the first connector and the fourth port being configured to accept the second connector,
- wherein the cable connects the first and second devices,
- wherein the first device switches operation between a host state and a client state based on the detected voltage at the second port.
Dependencies are inferred from the claim text.