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A passive triple-frequency multi-interface smart card and its self-adaptive working method

A smart card and multi-interface technology, applied in the field of radio frequency identification RFID, can solve the problem that the smart card cannot support three frequency bands at the same time, such as external power supply, so as to improve the radio frequency capture ability, improve the signal-to-noise ratio, and improve the communication efficiency.

Active Publication Date: 2017-03-29
苏州市洛肯电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that none of the existing smart cards can simultaneously support the reading and writing of three frequency bands and require an external power supply when working. The present invention proposes a passive triple-frequency multi-interface smart card and its adaptive work method

Method used

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  • A passive triple-frequency multi-interface smart card and its self-adaptive working method
  • A passive triple-frequency multi-interface smart card and its self-adaptive working method

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specific Embodiment approach 1

[0025] Specific implementation mode 1. Combination figure 1 and figure 2 Describe this embodiment, a passive triple-frequency multi-interface smart card described in this embodiment, the smart card includes a smart card chip 1, a card base 2, No. 1 antenna L1 and No. 2 antenna L2; the smart card chip 1 includes a voltage stabilizing circuit 4, Power pump 5, reset circuit 6, frequency selection interface circuit 7, random access memory 8, central control circuit 9, decoding circuit 10, encoding circuit 11, EEPROM 12, ROM 13 and verification / authentication anti-collision detection circuit 14;

[0026] The smart card chip 1 is embedded on one side of the card base 2, one end of the No. 1 antenna L1 is connected to the ground, and the other end of the No. 1 antenna L1 and one end of the No. 2 antenna L2 are simultaneously connected to the electrical signal input end of the power pump 5. The other end of No. antenna L2 is connected to a frequency signal input end of frequency ...

specific Embodiment approach 2

[0033] Specific implementation mode two, see figure 2 This embodiment is described. This embodiment is a further description of the passive tri-frequency multi-interface smart card described in Embodiment 1. The smart card also includes a magnetic strip 3, and the magnetic strip 3 is attached to one side of the card base 2. .

specific Embodiment approach 3

[0034] Specific implementation mode three, see figure 2 Describe this embodiment, this embodiment is the further description of a kind of passive triple-frequency multi-interface smart card described in specific embodiment one, smart card chip (1) also comprises reset circuit 6; The reset signal output terminal of reset circuit 6 is connected The reset signal input terminal of the central control circuit 9.

[0035] The card passive tri-frequency multi-interface smart card of the present invention is compatible with the relevant standards of bank magnetic stripe cards at the same time, and can realize the loading function of the bank account to the card, so that the card has small payment, attendance card, credit card, loading, etc. Many functions.

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Abstract

The invention discloses a passive three-frequency multi-interface intelligent card and an adaptive work method of the passive three-frequency multi-interface intelligent card, and relates to the technical field of RFID free of a built-in power supply. The problems that an existing intelligent card cannot support read-write of three frequency bands at the same time and needs to be externally connected with a power supply in the work process are solved. An intelligent card chip is fixedly embedded in one side of a card base, a first antenna and a second antenna are fixedly embedded in the two sides of the card base respectively, one end of the first antenna is grounded, the other end of the first antenna and one end of the second antenna are connected with an electric signal input end of a power pump at the same time, the other end of the second antenna is connected with a frequency signal input end of a frequency selection interface circuit, and a judgment feedback signal output end of a verification / certification anti-collision detection circuit is connected with a feedback signal input end of a center control circuit. The intelligent card is suitable for serving as the passive three-frequency multi-interface intelligent card.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification (RFID) based on no built-in power supply. Background technique [0002] Smart cards have been widely used in all aspects of people's lives. From the way they communicate with card reading and writing equipment / devices, they can be roughly divided into two working modes: contact and non-contact. Obviously, the contact end of the contact working method is prone to mechanical wear, dirt, etc., which lead to poor contact and other problems, and gradually tends to disappear; the non-contact working method avoids the shortcomings of the contact method and is widely used, but the non-contact working method And because of its various applications, it is divided into different working frequencies, resulting in smart cards that even work in a non-contact way are divided into low-frequency cards, high-frequency cards and ultra-high-frequency cards, resulting in one card and one use, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/077
Inventor 张福生王知非宗明魁许家忠蒋安波张凯
Owner 苏州市洛肯电子科技有限公司
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