Method for preventing non-contact card reader from mistakenly exiting
A non-contact, card reader technology, applied in the direction of instruments, inductive record carriers, electromagnetic radiation induction, etc., can solve the problem of large power interference of the antenna at the receiving end
Active Publication Date: 2020-01-17
北京维普无限智能技术有限公司
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In practical applications, because the signal reception and transmission of the non-contact card reader are integrated, when the transmitting field is too strong, it will often cause large power interference to the antenna of the receiving end
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0062] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0063] Embodiment 1 of the present invention, such as figure 1 As shown in the schematic diagram of a method for preventing the error exit of the non-contact card reader provided by Embodiment 1 of the present invention, the method includes the following steps:
[0064] Step 1, the contactless card reader obtains the signal average energy calculation factor parameter from the system area to generate the first factor, obtains the signal ave...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The embodiment of the invention relates to a method for preventing a non-contact card reader from mistakenly exiting, being characterized by comprising the following steps: 1, generating a first factor, a first proportion, a first threshold and a second threshold, and initializing a noise signal counter; 2, acquiring a signal modulation mode parameter to generate a first modulation mode; 3, turning to the step 4 when the first modulation mode is a binary on-off keying mode, and turning to the step 5 when the first modulation mode is a binary phase shift keying mode; 4, carrying out wireless signal receiving operation through a signal receiving antenna to begin to acquire a first signal frame, carrying out first signal identification operation on a bit signal of the first signal frame, andthen turning to step 6; 5, starting to obtain a second signal frame, carrying out second signal identification operation on a bit signal of the second signal frame, and then turning to step 6; and 6,enabling the non-contact card reader to set the signal receiving antenna to be in a standby state and quits the wireless signal receiving operation.
Description
technical field [0001] The invention relates to the technical field of near-field communication, in particular to a method for preventing a non-contact card reader from exiting by mistake. Background technique [0002] Contactless card readers based on the International Organization for Standardization (International Organization for Standardization, abbreviation: ISO) / International Electrotechnical Commission (International Electrotechnical Commission, abbreviation: IEC) 14443 specification family are currently widely used in financial transactions, identification, Freight logistics and other fields. According to the ISO / IEC14443 specification family protocol, the signal modulation methods of the contactless card reader include: binary on-off keying (On-Off Keying, abbreviation: OOK) mode, and binary phase shift keying (Binary Phase Shift Keying, abbreviation BPSK) ) mode; the data frame between the contactless card reader and the contactless card does not contain valid da...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10
CPCG06K7/10257G06K7/10297
Inventor 李洪旭欧曦姚贵军潘萌萌
Owner 北京维普无限智能技术有限公司