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Near-field communications terminal supply unit and method

A technology of near-field communication and power supply method, which is applied in the direction of circuit devices, selection devices, cooperative operation devices, etc., and can solve the problems of power consumption and normal use

Active Publication Date: 2008-04-09
SHANGHAI FUDAN MICROELECTRONICS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the terminal is turned off, the non-contact card simulation function and other functions that consume less power cannot be used normally, and the remaining power of the terminal battery is fully utilized to improve the effective utilization of the battery.

Method used

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  • Near-field communications terminal supply unit and method
  • Near-field communications terminal supply unit and method
  • Near-field communications terminal supply unit and method

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Embodiment Construction

[0085] A preferred embodiment of the present invention is given below in conjunction with FIG. 2 and FIG. 3 to describe the technical solution of the present invention in detail.

[0086] As shown in Figure 2, in the present embodiment, baseband chip 6 is the baseband chip of the E-GOLDPMB7880 model that Infineon Company produces, and subscriber identification card 10 is the subscriber identification card of the S3FS9DG model that Samsung Company produces, non-contact front-end chip (by RF rectification circuit 3, external field detection 12 and non-contact front-end post-processing part 9) and security chip 10 are integrated on one chip, using non-contact CPU card chip FM1920 developed by Shanghai Fudan Microelectronics Co., Ltd. The low dropout linear voltage regulator adopts TPS79311 of TI Company.

[0087] Among the various functions provided by the terminal, the power consumption of the contactless card simulation function is small, and the functions related to the reader...

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Abstract

The invention relates to a power supplying device and a method for a near field communication terminal. The device includes a non-contact front end chip, a base band chip, a safety chip, a user recognizing card, a reader / writer, an antenna, a low dropout regulator, a power supply management unit, a battery, a control switch, and a battery voltage detecting circuit; wherein the non-contact front end chip includes a RF rectifying circuit, an exterior field detecting circuit, and a non-contact front end post-treatment part. The device can supply power for a terminal in the mode by combining residual power in the battery and exterior field detection when a mobile phone is in off state so as to enable the terminal to perform simulative functions of the non-contact card normally, thereby fully utilizing the residue power in the terminal battery, improving effective utilization rate of the battery, preventing a user from always carrying a stand-by battery, and reducing the application cost of the terminal.

Description

technical field [0001] The present invention relates to a communication terminal power supply device and method, in particular to a near field communication (NearField Communication, NFC) terminal power supply device and method. Background technique [0002] In recent years, the electronic payment business has penetrated into our lives and brought us a lot of convenience, especially in fixed business places, the electronic payment business based on integrated circuit (Integrated Circuit, IC) card has formed a mature technology and stable market. Since 2006, with the promotion of near-field communication technology, mobile payment services based on mobile phones and mobile communication platforms have become a hot spot. The emerging market of near-field communication has already started, and various solutions emerge in an endless stream. In the current power supply device for a communication terminal, usually only a battery is used for power supply, and when the battery sto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K17/00G06K19/07H02J17/00H04Q7/32H02J50/20
Inventor 李清王磊石亦欣李蔚张纲
Owner SHANGHAI FUDAN MICROELECTRONICS GROUP
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