Patent EP0599244A2 successfully refreshed from Google Patents.
EP0599244A2
Expired / Lapsed
EP
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Portable electronic device
Assignee: Denso Corp
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Filing: 1993-11-22
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Granted: —
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Expires: 2013-11-22
Abstract
Abstract An IC card reader-writer (16) 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), thereby controlling 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.
Inventors
- 👤 Hidenori Ishii
- 👤 Kiyoshi Tsuzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 11:57
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/3816; G; G06; G06K; G06K7/00; G06K7/0013; G06K7/0086; G07; G07F; G07F19/00; G07F19/20; G07F19/208; H04M; H04M1/00; H04M1/02; H04M1/0202; H04M1/026; H04M1/0262; H04M1/66; H04M1/667; H04M1/67; H04M1/675; H04M1/72; H04M1/724; H04M1/72448; H04M1/725; H04M1/73; H04W; H04W52/00; H04W52/02; H04W52/0209; H04W52/0261; H04W52/0267; H04M2250/00; H04M2250/14; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
A portable electronic device comprising: An external device (17) integrated with a battery (18) for supplying electric power; An electronic device body (10) connectable to said external device to be supplied with the electric power from said battery; process control means (S12 through S14, S30 through S34) provided in said body for performing process which are predetermined in accordance with the type of said external device connected to said electronic device body; first power supply control means (S3, S4, S16, S17, S3', S4', S61' and S62') provided in said body (10) for producing, when said external device is connected to said body, an output signal which controls power supply from said battery to said external device; and signal transmission means (RXD, TXD) for outputting 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.
Claim 2
Dependent Claim
27 words
A device according to claim 1, wherein said signal transmission means includes deciding means (S10) for deciding which type of external device is connected to said body.
Claim 3
Dependent Claim
43 words
A device according to claim 1, further comprising: second power supply control means (30) provided in said external device for controlling power supply from said battery to said external device in response to said output signal from said first power supply control means.
Claim 4
Dependent Claim
45 words
A device according to claim 3, wherein said first power supply control means produces, to said second power supply means, an activation signal which activates said external device when said body is activated and a stop signal which stops power supply to said external device.
Claim 5
Dependent Claim
32 words
A device according to claim 4, wherein said external device includes an IC card reader-writer (16) for reading information stored in an IC card (22) and writing information into said IC card.
Claim 6
Dependent Claim
36 words
A device according to claim 5, wherein said IC card reader-writer includes external control means (24) for controlling operation of said IC card reader-writer in response to a control signal produced from said process control means.
Claim 7
Dependent Claim
27 words
A device according to claim 6, wherein said external control means produces to said process control means signal arising from the operation of said IC card reader-writer.
Claim 8
Dependent Claim
27 words
A device according to claim 7, wherein said body includes a phone (10), and wherein said reader-writer reads and writes information indicative of usage of said phone.
References Cited (Backward Citations)
No citation records indexed.
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