Information transmission method, system and device in radio frequency identification
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An information transmission system, radio frequency identification technology, used in instruments, inductive record carriers, computing, etc.
Active Publication Date: 2012-06-13
ZTE CORP
View PDF0 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0014] In view of this, the main purpose of the present invention is to provide an information transmission method, system and device in radio frequency identification, to solve the autocorrelation of existing frame synchronization code technology Poor performance, not suitable for judging the starting time of data
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0044] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.
[0045] In order to solve the defect that the existing frame synchronization code technology has poor autocorrelation performance and is not suitable for judging the starting time of data, the present invention provides an information transmission method in radio frequency identification, the core idea of which is: the reader will need to send The data information is coded and modulated to form a modulated signal, and the modulated signal is sent to the tag; the code adopts Energy Enhanced Code (EEC, Energy Enhanced Code), and the frame format of the modulated signal includes frame synchronization code, frame synchronization code The number of high and low levels is different, and the code word of the frame synchronization code contains three consecutive high levels with the same polarity; after the tag receives, dem...
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 invention discloses an information transmission method in radio frequency identification, comprising the following steps: a reader encodes and modulates the data information to be transmitted to form a modulation signal and transmits the modulation signal to a label, wherein the frame format of the modulation signal comprises a frame synchronous code comprising 10 binary codes in which the polarities are V1, V1, V2, V2, V2, V1, V2, V2, V1, and V2, sequentially, wherein V1 represents low level and V2 represents high level; therefore, the frame synchronous code forms the following levels: low, low, high, high, high, low, high, high, low, and high. The invention discloses an information transmission system in radio frequency identification, thereby solving the problem of poor auto correlation in the existing frame synchronous code technology which is not suitable for judging data start time.
Description
Technical field [0001] The invention involves radio frequency recognition technology in wireless communication, especially in information transmission methods, systems and devices in radio frequency recognition. Background technique [0002] Radio Frequency Identify is a non -contact automatic recognition technology that automatically recognizes the target object through RF signal and obtains relevant data. The identification operation does not require manual intervention, which can work in various harsh environments.The RFID system includes readers and labels (or answers). The reader can identify the label of high -speed movement, and can recognize multiple labels at the same time, which is fast and convenient to operate. [0003] Radio frequency recognition is divided into passive radio frequency recognition and active radio frequency recognition. The essence of the two is the label side.The label of passive radio frequency recognition is to obtain energy from the waveform emit...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more