Card-searching method for non-contact intelligent card reader

A non-contact card reader technology, applied to computer parts, instruments, induction record carriers, etc., can solve problems such as inconvenient use, high security of card readers, dustproof and waterproof difficulties, and achieve convenience Sexuality, high safety effect

Inactive Publication Date: 2006-12-13
SHANGHAI HUAHONG INTEGRATED CIRCUIT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a button or switch is set on the card reader and the card reader is turned on when the card needs to be read, although this is a method of saving energy, it brings great inconvenience to the use.
At th

Method used

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  • Card-searching method for non-contact intelligent card reader
  • Card-searching method for non-contact intelligent card reader

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] like figure 1 As shown, the card inquiry method of the non-contact smart card reader of the present invention is to control the card reader to be in a sleep state with low power consumption in most of the time through the card reader software, and not send the card inquiry carrier signal during the sleep period . After the waiting time t1, a card inquiry carrier signal is sent to inquire whether there is a non-contact smart card in the card reading range. If it is found that there is a card response, the card reading transaction process is started to carry out the deduction transaction operation. After a card reading transaction process operation is completed, it returns to the dormant state and waits for the next card inquiry carrier signal to be sent. If no contactless smart card is found in the card reading area, after the card inquiry carrier signal lasts for a period of time t2, the card reader actively turns off the card inquiry carrier signal, exits the card in...

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PUM

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Abstract

The disclosed query method for a non-contact smart card reader comprises: usually, the reader is on sleep state with very-low power, and auto sends query carrier-wave signal periodically; if there is card in range, the reader starts to read and complete operation; or else, back to sleep state. This invention saves energy and improves security.

Description

technical field [0001] The invention relates to a card inquiry method of a non-contact smart card reader using a battery, in particular to a non-contact smart card reader that does not read cards frequently but needs to be in the range of automatic inquiry whether there is a card all the time machine inquiry method. Background technique [0002] With the continuous promotion of smart card technology, contactless smart cards have been widely used in public transportation, taxis, refueling, water meters, electricity meters and other places that require small payment due to their convenience and safety. With the continuous expansion of application places, the types of matching smart card readers are also continuously subdivided. high demands. [0003] In many applications, there is such a demand that for the convenience of use, it is hoped that the non-contact smart card reader does not need to be switched on and off, and it is always in the state of automatically inquiring w...

Claims

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Application Information

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IPC IPC(8): G06K7/00
Inventor 许国泰
Owner SHANGHAI HUAHONG INTEGRATED CIRCUIT
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