Card-searching method for non-contact intelligent card reader

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...

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 the same time, due to the surface of the button and the gap between the button and the card reader as a whole, it is very difficult for the card reader to achieve high security, dustproof, waterproof, etc.

Images