Electronic device and interface device

An electronic device, that is attachable to and detachable from an interface device, wherein:

• the electronic device includes a first power interface, a first communication interface, a main function block, and a main power source,
• the interface device including a second power interface, and a second communication interface,
• the first power interface is connected to the second power interface, to which an external power source is connected, so that power transfer can be carried out between the first and second power interfaces, while the electronic device is connected to the interface device,
• the first communication interface is connected to the second communication interface, to which an external device is connected, so that a communication can be carried out between the first and second communication interfaces, while the electronic device is connected to the interface device, the first communication interface being connected to the main power source and the first power interface so that power supply can be carried out between the first communication interface and the main power source, or between the first communication interface and the first power interface, via switching means for selecting, as a power supply source, one of the first communication interface and the first power interface, and
• the main function block, having a control function which functions when the electronic device is not connected to the interface device, is connected to the main power source and the first power interface so that power supply can be carried out between the main function block and the main power source, and between the main power source and the first power interface.

An interface device, that is attachable to and detachable from an electronic device, wherein:

• the electronic device includes a first power interface, a first communication interface, a main function block, and a main power source,
• the interface device includes a second power interface, and a second communication interface,
• the first power interface is connected to the second power interface to which an external power source is connected so that power transfer can be carried out between the first and second power interfaces, while the electronic device is connected to the interface device,
• the first communication interface is connected to the second communication interface, to which an external device is connected, so that a communication can be carried out between the first and second communication interfaces, while the electronic device is connected to the interface device, the first communication interface being connected to the first power interface so that power supply can be carried out only between the first communication interface and the first power interface,
• the main function block, having a control function which functions when the electronic device is not connected to the interface device, is connected to the main power source and the first power interface so that power supply can be carried out between the main function block and the main power source, and between the main power source and the first power interface, and
• the second communication interface has a function for controlling the communication between the first and second communication interfaces.

An interface device, that is attachable to and detachable from an electronic device, wherein:

• the electronic device includes a first power interface, a first communication interface, a main function block, and a main power source,
• the interface device includes a second power interface, and a second communication interface,
• the first power interface is connected to the second power interface to which an external power source is connected so that power transfer can be carried out between the first and second power interfaces, while the electronic device is connected to the interface device,
• the first communication interface is connected to the second communication interface, to which an external device is connected, so that a communication can be carried out between the first and second communication interfaces, while the electronic device is connected to the interface device, the first communication interface being connected to the main power source and the first power interface so that power supply can be carried out between the first communication interface and the main power source, or between the first communication interface and the first power interface, via switching means for selecting, as a power supply source, one of the first communication interface and the first power interface,
• the main function block, having a control function which functions when the electronic device is not connected to the interface device, is connected to the main power source and the first power interface so that power supply can be carried out between the main function block and the main power source, and between the main power source and the first power interface, and
• the second communication interface has a function for controlling the communication between the first and second communication interfaces.

An interface device, that is attachable to and detachable from an electronic device, wherein:

• the electronic device includes a first power interface, a first communication interface, a main function block, and a main power source,
• the interface device includes a second power interface, and a second communication interface,
• the first power interface is connected to the second power interface to which an external power source is connected so that power transfer can be carried out between the first and second power interfaces, while the electronic device is connected to the interface device,
• the first communication interface is connected to the second communication interface, to which an external device is connected, so that a communication can be carried out between the first and second communication interfaces, while the electronic device is connected to the interface device, the first communication interface being connected to the first power interface so that power supply can be carried out only between the first communication interface and the first power interface,
• the main function block, having a control function which functions when the electronic device is not connected to the interface device, is connected to the main power source and the first power interface so that power supply can be carried out between the main function block and the main power source, and between the main power source and the first power interface,
• the first and second communication interfaces respectively carry out optical communication,
• the second communication interface serves as a connection terminal for an optic fiber, and
• the optic fiber is connected to the external device having a function for controlling the communication between the first and second communication interfaces.

An interface device, that is attachable to and detachable from an electronic device, wherein:

• the electronic device includes a first power interface, a first communication interface, a main function block, and a main power source,
• the interface device includes a second power interface, and a second communication interface,
• the first power interface is connected to the second power interface to which an external power source is connected so that power transfer can be carried out between the first and second power interfaces, while the electronic device is connected to the interface device,
• the first communication interface is connected to the second communication interface, to which an external device is connected, so that a communication can be carried out between the first and second communication interfaces, while the electronic device is connected to the interface device, the first communication interface being connected to the main power source and the first power interface so that power supply can be carried out between the first communication interface and the main power source, or between the first communication interface and the first power interface, via switching means for selecting, as a power supply source, one of the first communication interface and the first power interface,
• the main function block, having a control function which functions when the electronic device is not connected to the interface device, is connected to the main power source and the first power interface so that power supply can be carried out between the main function block and the main power source, and between the main power source and the first power interface,
• the first and second communication interfaces respectively carry out optical communication,
• the second communication interface serves as a connection terminal for an optic fiber, and
• the optic fiber is connected to the external device having a function for controlling the communication between the first and second communication interfaces.