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
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[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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