Title:
SMART CARD AND POWER SWITCHING CIRCUIT OF SMART CARD
Document Type and Number:
WIPO Patent Application WO/2020/052461
Kind Code:
A1
Abstract:
A smart card and a power switching circuit (1) of the smart card, the power switching circuit (1) of the smart card being connected to a load (2) of the smart card, the power switching circuit comprising: a 7816 contact (10), configured to be electrically connected to a contact card reader for communication; an NFC antenna (20), configured to wirelessly communicate with an NFC card reader; a first voltage conversion unit (30), connected to the 7816 contact (10), and configured to convert a contact voltage (7816_VCC) outputted by the 7816 contact (10) into a first voltage (CARD_VCC); a second voltage conversion unit (40), connected to the NFC antenna (20), and configured to convert an antenna voltage (ANT_VCC) outputted by the NFC antenna (20) into a second voltage (NFC_VCC); and a switching unit (50), connected to the first voltage conversion unit (30) and the second voltage conversion unit (40), and configured to select the first voltage (CARD_VCC) or the second voltage (NFC_VCC) to supply power to the load (2).
Inventors:
CHEN LIUZHANG (CN)
Application Number:
PCT/CN2019/103998
Publication Date:
March 19, 2020
Filing Date:
September 02, 2019
Export Citation:
Assignee:
EXCELSECU DATA TECH CO LTD (CN)
International Classes:
H02J9/06; G06K19/07
Foreign References:
| CN208890472U | 2019-05-21 | |||
| CN101523327A | 2009-09-02 | |||
| CN101512863A | 2009-08-19 | |||
| CN101533479A | 2009-09-16 | |||
| CN102609022A | 2012-07-25 | |||
| US20100302039A1 | 2010-12-02 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)
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