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| System and method for power control calibration and a wireless communication device |
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| Call processing system with call screening |
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| Communications device within a doll |
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| Establishing a communication link |
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| Method and apparatus of providing audio feedback over a digital channel |
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Electronic device and interface device
| Details |
Inventors: Osawa, Shohei;
Assignee: Sharp Kabushiki Kaisha (Osaka, JP)
Primary Examiner: Feild; Joseph
Assistant Examiner: Smith; S.
Attorney, Agent or Firm: Birch, Stewart, Kolasch & Birch, LLP
When a portable information terminal device is connected with a cradle, a power interface is connected to a power interface being connected to an external power source so as to allow power to transfer. When the portable information terminal device is connected with the cradle, an optical interface is connected to an optical interface being connected to an external device so as to allow communications. A main function block having a control function to function when the portable information terminal device is not connected with the cradle, is connected to a main power source and the power interface so as to allow power to transfer. The optical interface is arranged so that power is supplied from only the power interface. In such arrangement, a terminal becomes more durable, because optical communication is performed. Further, only the external power source supplies power to the optical interface when the optical interface is connected with the cradle. |
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DETAILED DESCRIPTION In view of the foregoing problems, the present invention is made, and an object of the present invention is to provide an electronic device and an interface device, respectively for solving a problem in durability of connecting terminal of a cradle.
In order to achieve the foregoing object, an electronic device in accordance with the present invention is an electronic device, that is attachable to and detachable from an interface device, wherein (i) the electronic device includes a first power interface, a first communication interface, a main function block, and a main power source, (ii) the interface device includes a second power interface, and a second communication interface, (iii) 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, (iv) 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, and (v) 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.
With the arrangement, the first communication interface operates upon receipt of the power supplied from the external power source, while the electronic device is attached to the interface device
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