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Devices with removable smart cards

A technology for smart cards and electronic devices, applied in the directions of reducing energy consumption, energy-saving computing, climate sustainability, etc., can solve problems such as shortening device battery life and increasing total power requirements

Pending Publication Date: 2020-12-11
NORDIC SEMICONDUCTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In turn, this increases the overall power requirement, reducing the battery life of the device

Method used

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  • Devices with removable smart cards
  • Devices with removable smart cards
  • Devices with removable smart cards

Examples

Experimental program
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Embodiment Construction

[0050] figure 1 A device 100 is shown connected to a Universal Integrated Circuit Card (UICC) 110 according to an embodiment of the invention. For example, the device may be an Internet of Things (IoT) device such as a remote environmental sensor. The apparatus includes a memory 102 , a CPU 104 including encryption hardware 106 , and a UICC power regulator 108 .

[0051] UICC 110 is a standard smart card that is used in devices that require a cellular data network connection, such as mobile phones or remote sensors. The UICC 110 runs a Subscriber Identity Module (SIM) application containing the required profiles etc. for establishing communications with the network operator. The CPU 104 can then use this to control the relevant hardware on the device 100 for communicating with the network. UICC 110 is in operative communication with CPU 104 of device 100 .

[0052] The device 100 is a device connected to a network via, for example, LTE, 3G, GSM, etc., for data communicatio...

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PUM

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Abstract

A method of controlling an electronic device (100) including a memory (102) and a removable smart card (110). The method involves the device (100) sending a request for context data to the smart card(110). The smart card (110) sends context data to the device (100) in response to the request and stores this data in the memory (102) and power to the smart card (110) is reduced. Power to the smartcard (110) is then increased or restored, and the data is written back to the smart card (110).

Description

technical field [0001] The present invention relates to devices connectable to removable smart cards, such as Universal Integrated Circuit Cards (UICCs) running Subscriber Identity Module (SIM) applications, and to methods of controlling such devices. Background technique [0002] Currently, the use of smart cards such as Universal Integrated Circuit Cards (UICCs) in devices is typical for applications such as mobile phones or other cellular enabled devices. A UICC usually includes a CPU and a small amount of memory. Due to the large demand for very low-cost UICCs, components such as CPUs inside UICCs are very limited in terms of speed / efficiency. Applications such as Subscriber Identity Module (SIM) applications can run on the UICC to allow devices connected to the UICC to communicate with the cellular network. This allows long-distance transmission of data from mobile / remote devices without requiring connections such as direct wiring, Wi-Fi, Bluetooth, etc., all limited ...

Claims

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Application Information

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IPC IPC(8): G06F1/3234G06F1/3287G06K7/00H04W52/02G06K19/07
CPCG06F1/325G06F1/3287H04W52/0216H04W52/0229H04W52/0235H04W8/183Y02D10/00Y02D30/70G06K19/0701H04L9/32H04W8/18G06F1/3203
Inventor 汉努·塔维帝马可·温布拉德维利-佩卡·朱蒂拉
Owner NORDIC SEMICONDUCTOR