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Memory card with smart cart function, memory card power supply control method, and memory card power supply control circuit

A technology of power control unit and smart card, which is applied in the direction of information storage, static memory, digital memory information, etc., and can solve problems such as limiting the scope of application

Active Publication Date: 2013-09-25
PHISON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of memory card receives different power input when it is read by the reading device in the host system under different circumstances. limit its scope of application

Method used

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  • Memory card with smart cart function, memory card power supply control method, and memory card power supply control circuit
  • Memory card with smart cart function, memory card power supply control method, and memory card power supply control circuit
  • Memory card with smart cart function, memory card power supply control method, and memory card power supply control circuit

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Embodiment Construction

[0067] figure 1 It is a schematic block diagram of a memory card and its host system according to an exemplary embodiment of the present invention. Please refer to figure 1 , the host system 100 of this exemplary embodiment includes a memory card reading device 110 and a wireless communication reading device 120 . Here, the host system 100 is, for example, a portable electronic communication device (such as a mobile phone, a tablet computer), but the invention is not limited thereto. In this exemplary embodiment, the memory card 200 includes a flash memory unit 210 , a data processing control unit 220 and a power control unit 230 . The data processing control unit 220 includes a memory control circuit 222 and a smart card circuit 224 . The memory control circuit 222 is coupled to the flash memory unit 210 . The smart card circuit 224 is coupled to the memory control circuit 222 . The memory card 200 is, for example, a Micro Secure Digital (Micro SD) memory card, which is ...

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PUM

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Abstract

The invention relates to a memory card with a smart card function, a memory card power supply control method, and a memory card power supply control circuit. The memory card comprises a flash memory unit, a data processing control unit and a power supply control unit, wherein the data processing control unit is coupled to the flash memory unit, controls the flash memory unit, and encrypts / decrypts and stores smart card security data, the power supply control unit is coupled to the data processing control unit and the flash memory unit, the power supply control unit receives at least one of a first power supply input and a second power supply input, and supplies the first power supply input or the second power supply input to the data processing control unit according to at least a control signal, and one output terminal of the power supply control unit is coupled to the first power supply input. In addition, the invention provides the memory card power supply control method and the memory card power supply control circuit.

Description

technical field [0001] The invention relates to a power control method and a power control circuit, and in particular to a memory card with smart card function and its power control method and power control circuit. Background technique [0002] As users gradually accept the use of electronic wallets and prepaid stored value, the use of smart cards is becoming more and more popular. A smart card (Smart Card) is an integrated circuit chip (IC chip) having components such as a microprocessor, a card operating system, a security module, and a memory to allow a holder to perform predetermined operations. The smart card provides computing, encryption, two-way communication and security functions, making this card not only store data, but also protect the stored data. Subscriber Identification Module (SIM) cards used in cellular phones using the Global System for Mobile Communications (GSM) mechanism are one example of smart cards. In general, smart cards are inherently limited ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C7/10G11C5/14
Inventor 刘兴昌蔡明宪
Owner PHISON ELECTRONICS