Collision detection method by using magnetic bi-directional communication

A technology of collision detection and magnetic communication, applied in electronic circuit testing, instruments, inductive record carriers, etc., can solve the problems of occupying radio frequency interaction time and increasing time.

Active Publication Date: 2013-03-20
NATIONZ TECH INC
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Problems solved by technology

[0004] It can be seen from the above that in the radio frequency communication system where magnetic communication is one-way communication, the conflict detection method adopted, the conflict response is replied on the radio frequency channel, and the first magnetic radio frequency device must periodically inquire whether there is any Conflict response, occupying the normal radio frequency interaction time, resulting in a longer time for the first magnetic radio frequency device and the second magnetic radio frequency device to swipe the card

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  • Collision detection method by using magnetic bi-directional communication
  • Collision detection method by using magnetic bi-directional communication

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[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0022] An embodiment of the present invention discloses a collision detection method using magnetic two-way communication, which is applied to a short-distance communication system including at least one first magnetic radio frequency device and at least one second magnetic radio frequency device. In the embodiment of the present invention, the first magnetic radio frequency device may be a card reading device; the second magnetic radio frequency device may be a SIM card, a UIM card, or a USIM card placed in a mobile terminal or placed in a mobile terminal , TF card or SD card, wherein the mobile terminal refers to a mobile terminal, which may be a mobile phone, a personal digital assistant (PDA), or a notebook compu...

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Abstract

The present invention relates to a collision detection method by using magnetic bi-directional communication. The method is applied to a near field communication system including at least one first magnetic radio frequency device and at least one second magnetic radio frequency device. The method comprises the following steps: a magnetic channel is used to access a second magnetic radio frequency device; and the first magnetic radio frequency device further sends a magnetic collision detection request signal via the magnetic channel, and determines whether there are a plurality of second radio frequency device are in collision, according to whether a response signal of the collision detection request signal is received. The collision detection method by using magnetic bi-directional communication provided by the present invention, both the collision detection request signal and the response signal of the collision detection request signal are transferred via the magnetic channel, so the radio frequency interaction time is not affected, and the communication efficiency is improved to some extent.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a collision detection method utilizing magnetic two-way communication. Background technique [0002] With the popularity of mobile terminals, the demand for electronic payment using mobile terminals has become very urgent. There are currently many implementation schemes, one of which is realized by integrating a 2.4G radio frequency communication module and a magnetic signal magnetic induction module in a smart card such as a mobile phone SIM card or SD card. The magnetic communication of this scheme is one-way communication. The SIM card or SD card in the mobile phone detects the coupled magnetic signal strength and receives magnetic information to activate the radio frequency communication module on the SIM card or SD card for radio frequency data exchange. This radio frequency data exchange method has been widely used in many fields such as electronic wallet payment, bus...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00G01R31/28
CPCG06K7/10029
Inventor 李富仪
Owner NATIONZ TECH INC
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