Storage device and controlling method thereof

1. A controlling method of a storage device, the storage device being in communication with a handheld electronic device and being connected with a peripheral storage unit, the controlling method comprising steps of:

providing a connection status between the storage device and the peripheral storage unit to the handheld electronic device from the storage device, so that the connection status is shown on the handheld electronic device, wherein the connection status indicates that the peripheral storage unit is connected with the storage device;

selecting a specified file stored in the peripheral storage unit according to the connection status shown on the handheld electronic device, wherein files stored in the peripheral storage unit is browsed on the handheld electronic device, and the specified file of the files stored in the peripheral storage unit is selected through the handheld electronic device;

issuing a read command from the storage device to the peripheral storage unit, and reading the specified file stored in the peripheral storage unit in response to the read command; and

storing the specified file into the storage device, and providing a storing result to the handheld electronic device.

2. The controlling method as claimed in claim 1 , further comprising a step of issuing a control signal from the handheld electronic device to the storage device, wherein in response to the control signal, the connection status is generated by the storage device.

3. The controlling method as claimed in claim 1 , wherein the storage device further comprises a wireless transmission unit, which is in communication with the handheld electronic device.

4. The controlling method as claimed in claim 1 , wherein the handheld electronic device is a smart phone or a tablet personal computer.

5. The controlling method as claimed in claim 1 , wherein the peripheral storage unit is a solid state drive, a memory card, a network storage unit or a cloud storage service device.

6. A storage device for use with a handheld electronic device, the storage device being connected with a peripheral storage unit, the storage device comprising:

a wireless transmission module in communication with the handheld electronic device;

a controlling unit connected with the wireless transmission module;

a storing unit connected with the controlling unit; and

a first connecting port connected with the controlling unit,

wherein when the wireless transmission module provides a connection status between the first connecting port of the storage device and the peripheral storage unit to the handheld electronic device, the handheld electronic device indicates that the peripheral storage unit is connected with the first connecting port, and files stored in the peripheral storage unit is browsed on the handheld electronic device, wherein when a specified file stored in the peripheral storage unit is selected through the handheld electronic device, the controlling unit issues a read command to the peripheral storage unit, wherein in response to the read command, the specified file stored in the peripheral storage unit is read by the controlling unit and stored into the storing unit of the storage device.

7. The storage device as claimed in claim 6 , wherein in response to a control signal issued from the handheld electronic device to the wireless transmission module, the connection status is generated by the controlling unit.

8. The storage device as claimed in claim 6 , wherein the wireless transmission module is a Bluetooth transmission module.

9. The storage device as claimed in claim 6 , wherein the handheld electronic device is a smart phone or a tablet personal computer.

10. The storage device as claimed in claim 6 , wherein the peripheral storage unit is a solid state drive, a memory card, a network storage unit or a cloud storage service device.