Portable electronic device having an external I/O unit and power source integral therewith
First Claim
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1. A portable electronic device comprising:
- an external device integral with a battery for supplying electric power;
an electronic device body connectable to said external device to be supplied with the electric power from said battery;
process control means provided in said electronic device body for performing processes which are predetermined in accordance with a type of said external device connected to said electronic device body;
first power supply control means provided in said electronic device body for producing, when said external device is connected to said electronic device body, an output signal which controls power supply from said battery to said external device to prevent unnecessary power consumption; and
signal transmission means for outputting a first signal generated by said process control means to said external device and for inputting a second signal generated by said external device to said process control means.
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Abstract
An IC card reader-writer is integrated with a battery pack 15. This IC card reader-writer 16 has a control terminal CNT and a power supply control switch 30. A portable phone unit sends power-on/off signals, which are received by the control terminal CNT to turn on and off the power supply control switch 30 to control power supply from the battery 18 to the IC card reader-writer 16. The CPU 24 of the IC card reader-writer 16 controls power supply in such a manner that power is supplied to the IC card 22 only when access to the IC card 22 is necessary and stopped when access to the IC card 22 is unnecessary.
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Citations
19 Claims
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1. A portable electronic device comprising:
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an external device integral with a battery for supplying electric power; an electronic device body connectable to said external device to be supplied with the electric power from said battery; process control means provided in said electronic device body for performing processes which are predetermined in accordance with a type of said external device connected to said electronic device body; first power supply control means provided in said electronic device body for producing, when said external device is connected to said electronic device body, an output signal which controls power supply from said battery to said external device to prevent unnecessary power consumption; and signal transmission means for outputting a first signal generated by said process control means to said external device and for inputting a second signal generated by said external device to said process control means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 13, 14, 15, 16, 17, 18, 19)
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9. A modular electronic apparatus for an information processing device, said apparatus comprising:
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a housing connectable to said information processing device, said housing having a power connector, a data connector and an IC card connector disposed therein; an IC card reader/writer, disposed in said housing, for communicating with an IC card removably disposed in said IC card connector and for communicating with said information processing device separate from said modular apparatus via said data connector; a power supply, disposed in said housing, for supplying operative power to said information processing device and to said IC card. - View Dependent Claims (10, 11, 12)
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Specification