KR100779542B1 - Communication terminal having rfid function and reading method for the same - Google Patents

Abstract

A communication terminal having an RFID(Radio Frequency Identification) function and a reading method are provided to output product information received from one RFID tag when plural RFID tags are contiguous to the terminal, thereby immediately confirming desired product information of a user on a terminal screen. A program memory(100) is mounted with an RFID application. A data memory(200) provides a data storage space necessary for program execution. A terminal modem(300) executes a program of the program memory(100) according to working schedule. An RCP(Reader Control Protocol) chip(400) supports an RCP of an RFID. An RF module(500) performs RF communication with an RFID tag by operating under control of the RCP chip(400).

Description

Communication terminal and reading method with radio frequency identification function {COMMUNICATION TERMINAL HAVING RFID FUNCTION AND READING METHOD FOR THE SAME}

1 is a functional block diagram showing a hardware configuration of a communication terminal according to an embodiment of the present invention.

2 is an exemplary view showing a software layer of a communication terminal according to an embodiment of the present invention.

3 is a functional diagram showing a detailed configuration of the reader control protocol of FIG.

4 is an exemplary view illustrating an operation of reading information of one product among a plurality of products.

** Description of the symbols for the main parts of the drawings **

100: Program memory 200: Data memory

300: terminal modem 400: RCP chip

500: RF module

The present invention relates to a communication terminal and a reader method having a radio frequency identification function. In particular, the present invention relates to a radio frequency identification function for outputting product information received from one RFID tag when a plurality of RFID tags are in close proximity to the communication terminal. It relates to a communication terminal and a reader method having.

RADIO FREQUENCY IDENTIFICATION (RFID) is a technology that incorporates the use of electromagnetic or electrostatic coupling within the radio frequency of the electromagnetic spectrum to identify objects, animals or humans. RFID is a technology that replaces barcodes. The advantage of RFID is that it does not require direct contact or scanning in the visible band.

An RFID system consists of three elements: an antenna, a transceiver, and a tag, also called a transponder. The antenna uses radio frequency propagation to carry a signal to activate the transponder. When the transponder is activated, the transponder transmits the data it has to the antenna. Data is usually handed over to the PLC where some processing takes place, which can range from as simple as passing through a door to something as complex as a database-driven sales transaction.

In the RFID system, the RFID reader processes the RF tag data by RF module which communicates with the RFID tag by radio frequency, RCP chip which controls the RF module to communicate with the RFID tag, and data communication by RCP chip and reader control protocol. Includes an RFID application. The communication terminal is equipped with such an RFID reader to read the RFID tag. Communication terminals include mobile communication terminals, computers, and personal information terminals.

Conventional RFID readers receive radio signals received from nearby RFID tags, decode them according to the protocol stack of RFID, and receive data information. The RFID reader collects data information received from the RFID tag and outputs the collected data information on the screen.

Recently, an RFID reader outputs information collected from various RFID tags in a list and outputs information of the selected RFID tag on the screen. Since the RFID reader outputs information collected from several RFID tags, there is a problem in that a product that a user wants to view and a product information that the user does not want to view are mixed and output. For this reason, the user checks the list to see the desired product information and checks the product information by selecting the title of the product information from the list.

When a user places an RFID reader on a product for which he / she wants to know product information, the conventional RFID reader does not immediately provide product information desired by a user by mixing and outputting product information of various RFID tags.

The present invention has been made to solve the above-mentioned conventional problems, a communication terminal having a radio frequency identification function that can output product information received from one RFID tag when a plurality of RFID tags in close proximity to the communication terminal And a reader method.

According to an aspect of the present invention, there is provided a communication terminal including an RFID reader for controlling an RF module that performs radio frequency communication with an RFID tag, wherein the RFID tag has a high frequency of data reception by wirelessly communicating with an adjacent RFID tag. A reader control protocol module for delivering data information to the RFID application; A configuration is provided that includes a processor that executes an RFID application that receives data information of an RFID tag from a reader control protocol module and outputs product information corresponding to one RFID tag on a screen.

The reader method according to the present invention comprises the steps of: wirelessly communicating with a nearby RFID tag in a reader control protocol module to transmit data information of an RFID tag having a high number of data reception times to an RFID application; And receiving, by the RFID application, data information of the RFID tag from the reader control protocol module and outputting product information corresponding to one RFID tag on a screen.

The reader control protocol module includes: a reader control protocol for controlling the RF module to receive data from an RFID tag according to a predetermined communication protocol; And a data output unit for measuring the number of times of data reception for the RFID tag of the reader control protocol and delivering the data information of the RFID tag having a high number of times of data reception to the RFID application. The reader control protocol module receives the data from the RFID tag by controlling the reader control protocol with firmware executed in the RCP chip, and measures the number of times of data reception for each RFID tag so that the data information of the RFID tag having the highest number of data reception times is higher. Deliver to RFID applications running in layers.

The reader control protocol module is configured to control a communication cycle for controlling the number of radio communication between the RFID module and the RFID tag to measure the number of times of data reception for each RFID tag. The reader control protocol module controls the wireless signal transmission and reception between the RF module and the RFID tag by setting a communication cycle differently. The reader control protocol module measures the data reception rate for each RFID tag to increase or decrease the communication cycle, and again measures the data reception count for each RFID tag to determine the increase or decrease of the communication cycle. The reader control protocol module controls the increase and decrease of the communication cycle to increase or decrease the difference between the best data rate and the lowest data rate.

The reader control protocol module is configured to measure the number of times of data reception for each RFID tag and deliver the data information of the RFID tag with the highest number of times of data reception to the RFID application. The reader control protocol module delivers only the data information of the RFID tag having the highest number of data receptions to the RFID application operating in the upper layer. The reader control protocol module receives data information from multiple RFID tags, but delivers data information for one RFID tag to an RFID application.

The reader control protocol module is configured to compare the number of times of data reception for each RFID tag and the communication cycle for the RFID tag to deliver data information of the two RFID tags to the RFID application. The reader control protocol module compares the number of times corresponding to the communication cycle for a predetermined time with the number of times of data reception and selects an RFID tag having the same number. The reader control protocol module compares and determines the communication cycle and the number of data receptions to search for an RFID tag that the communication terminal is oriented among a plurality of RFID tags located nearby.

The processor is configured such that RFID applications and reader control protocol modules directly open data communication channels to send and receive data. The processor builds a standard platform on top of the hardware layer to perform other applications in addition to the RFID application, but configures the software layer to form a communication channel through which the RFID application and the reader control protocol module can communicate directly. The processor establishes a bypass communication channel between the RFID application and the reader control protocol module to send and receive data directly between the two modules.

The processor is configured to run an RFID application on a standard platform of a mobile communication system, and a reader control protocol module operating at the RFID application and a hardware layer to directly communicate data to receive data information of the RFID tag. The processor provides a standard platform for mobile communication systems into the operating environment of RFID applications. The standard platform of a mobile communication system is a standard platform of a communication terminal that supports execution of various communication services. The processor supports the execution of the standard platform and the RFID application supports access to hardware resources through the standard platform. The reader control protocol module operates under the standard platform, but the processor configures the communication channel to allow RFID applications to communicate directly with the reader control protocol module without going through the standard platform.

The processor is configured to drive an RFID application to operate a communication terminal as an RFID reader to receive data from a plurality of RFID tags located nearby, but output data information for one RFID tag having a high number of data reception times. The processor can execute various applications, but when executing an RFID application embedded in the program memory, the communication terminal operates as an RFID reader. The RFID reader receives data from a plurality of RFID tags but outputs data information for one RFID tag having a high number of data receptions without outputting all data.

The RFID application is configured to change the communication cycle of the reader control protocol module, modify the data reception rate again, and then receive data information corresponding to the RFID tag from the reader control protocol module. The RFID application accesses the configuration of the reader control protocol module to change the communication cycle. The RFID application modifies the number of times of data reception corresponding to the changed communication cycle and receives data information corresponding to the RFID tag from the reader control protocol module.

The RFID application is configured to receive data information corresponding to an RFID tag from a reader control protocol module, output the data information for a predetermined time, check a user input, and output data information corresponding to another RFID tag. The RFID application outputs data information corresponding to the RFID tag on the screen, and then the number of times of data reception is changed as the communication terminal moves. At this time, the RFID application does not immediately output data information corresponding to the RFID tag having a high number of data reception, but maintains output of the data information corresponding to the RFID tag for a predetermined time. The RFID application then outputs the data information to the user input or to another RFID tag with a high frequency of data reception.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing the embodiments, descriptions of technical contents which are well known in the technical field to which the present invention belongs and are not directly related to the present invention will be omitted. This is to more clearly communicate without obscure the subject matter of the present invention by omitting unnecessary description.

1 is a functional block diagram showing a hardware configuration of a communication terminal according to an embodiment of the present invention, and FIG. 2 is a software layer of a communication terminal according to an embodiment of the present invention. 3 is a functional configuration diagram showing the detailed configuration of the reader control protocol of Figure 2, Figure 4 is an exemplary view showing the operation of reading information of one of a plurality of products.

Referring to FIG. 1, a communication terminal according to an embodiment of the present invention includes a program memory 100 including an RFID application, a WIPI API, and a HAL; A data memory 200 which provides a data storage space for executing a program; A terminal modem 300 executing a program of the program memory 100 according to a work schedule; A reader control protocol (RCP) chip 400 supporting a reader control protocol of RFID; It is composed of an RF module 500 that operates under the control of the RCP chip 400 and performs radio frequency communication with the RFID tag.

The program memory 100 includes an RFID application for outputting product information recognized by an RFID tag; A WIPI API supporting a standard API of a communication protocol; Equipped with Hardware Adaptation Layer (HAL) that directly controls hardware resources. RFID applications communicate data by means of an RCP chip and a reader control protocol to read data from RFID tags. The RFID application processes the data of the RFID tag to decode the product information and displays the data of the product information on the terminal screen according to the amount of display information appropriate for the terminal screen size. The WIPI API provides the hardware resources needed for an RFID application to operate.

The terminal modem 300 executes an RFID application of the program memory 100 according to a work schedule of the OS. The terminal modem 300 runs an RFID application to operate the terminal as an RFID reader. The RFID reader outputs the RF signal in the 13.56 MHz frequency band and receives the RF signal from the RFID tag located within one meter to receive data information of the RFID tag. The RFID reader receives data information of the RFID tag from a plurality of RFID tags located within one meter, but outputs only the data information of the RFID tag having a high number of data reception times on the terminal screen.

The RCP chip 400 supports the reader control protocol of RFID. The RCP chip 400 controls the RF module 500 required for radio frequency communication with the RFID tag to perform data communication with the RFID tag. The RCP chip 400 processes a data format of an RFID tag according to a reader control protocol, inputs and outputs a radio frequency signal according to an input / output cycle of a radio frequency signal, and performs data communication with the RFID tag. The RCP chip 400 selects one RFID tag among a plurality of RFID tags by checking an input / output cycle and checking the data reception count of the RFID tag. The RCP chip 400 packetizes the data information of the selected RFID tag according to a communication protocol with the RFID application and delivers the packetized information to the RFID application.

Next, the communication terminal according to the present invention will be described in detail by way of examples. From the following description of the software layer of the communication terminal, the configuration of the above-described communication terminal will also be clear.

2 is an exemplary view showing a software layer of a communication terminal according to an embodiment of the present invention.

The RCP 110 controls the RF module by driving a function of the RCP chip. The RCP 110 is located below the HAL 120 layer and controls the RF module to wirelessly communicate with the RFID tag through a physical communication channel to receive the radio signal of the RFID tag and decode the radio signal to decode the data information of the RFID tag. Receive. The RCP 110 checks the number of times of data reception of the RFID tag relative to the wireless input / output cycle and transmits the data of the RFID having a high number of times of data reception to the RFID application 140 according to a communication protocol. The RCP 110 supports the RCP of the MRF Forum standard. In the RRF of the MRF Forum standard, the RFID reader protocol format consists of an 8-bit preamble, a 32-bit header, an N * 8-bit payload, and an 8-bit end mark. The header consists of an 8 bit message type, an 8 bit code, and a 16 bit payload.

The HAL 120 is a software package tuned to the characteristics of the hardware mounted on the terminal. The HAL 120 relays access to hardware resources of the WIPI 130 to efficiently manage hardware resources. HAL 120 provides a hardware access function to standardized WIPI 130. The HAL 120 configures an access function for hardware provided in the terminal to support the operation of higher layers. HAL 120 is responsible for connecting the software interface and hardware interface of the upper layer. HAL 120 receives the hardware access of the upper layer and calls the appropriate hardware access function to provide hardware resources to the upper layer.

WIPI 130 provides the resources required by RFID application 140. The WIPI 130 provides various resources necessary for driving the RFID application 140 to the RFID application 140 and monitors the operation of the RFID application 140. The WIPI 130 supports various functions necessary for accessing various resources of the communication terminal and processing wireless communication, data communication, and event processing. The WIPI 130 is a standard platform and provides various functions to the corresponding application when the application is executed according to the work schedule of the OS. WIPI 130 provides a standard platform for applications to provide a work environment in which applications can execute the same work on other terminals.

The RFID application 140 operates in a WIPI 130 environment and communicates data directly with the RCP 110 layer. The RFID application 140 receives data information of the RFID tag by direct data communication with the RCP. The RFID application 140 reads the product information recorded on the RFID tag by decoding the data information of the RFID tag. The RFID application 140 outputs product information on the terminal screen.

3 is a functional configuration diagram showing the detailed configuration of the reader control protocol of FIG.

The RCP 110 includes a cycle controller 111 that controls input / output cycles of radio signals; A count output unit 112 for outputting a count of reading tag information of the RFID tag; Comparator 113 for comparing the input and output cycles and the number of times and delivers the tag information of the matching RFID tag to the RFID application.

The cycle controller 111 controls the number of times of wireless communication between the RFID tag and the RF module. The higher the number of input / output cycles in the cycle controller 111, the higher the number of radio communication between the RFID tag and the RF module. The cycle controller 111 receives the input / output cycle setting of the RFID application to adjust the input / output cycle. That is, the cycle controller 111 adjusts the input / output cycle according to the input / output cycle setting of the RFID application. The RCP 110 controls the RF module according to the input / output cycle of the cycle controller 111 to output a radio signal and receive a radio signal received from the RFID tag. The cycle controller 111 controls the number of times that data can be communicated between the RCP and the RFID tag.

The number output unit 112 collects data information received from a plurality of RFID tags and calculates a cumulative number of receptions of data information received for each RFID tag. The number output unit 112 calculates a cumulative number of receptions for the data information of each RFID tag and outputs the calculated number of received times to the comparator 113. The number output unit 112 classifies the data information according to the communication protocol of each RFID and calculates the cumulative number of receptions of each RFID tag.

The comparator 113 compares the input / output cycle of the radio signal with the cumulative number of reception of each RFID tag, and transmits the tag information of the RFID tag having the same number to the RFID application. The comparator 113 compares the number of input / output cycles with the cumulative number of receptions of each RFID tag, and transmits the tag information of the RFID tag having the largest cumulative number of receptions to the RFID application.

4 is an exemplary view illustrating an operation of reading information of one product among a plurality of products.

The RFID application is in data communication with the RCP of the communication terminal and receives data information of the RFID tag. The RCP of the communication terminal drives the RF module to output a radio signal (S101). The RCP of the communication terminal receives (S102) and decodes a radio signal from an RFID tag included in a product located within one meter to parse data information of the product. The RCP of the communication terminal determines the number of times of reception of the radio signal of each RFID tag relative to the radio input / output cycle and transmits data information of the RFID tag having a high number of times of reception of the radio signal to the RFID application (S103). The RFID application receives data information of an RFID tag having a high frequency of data reception from the RCP, processes the data information according to the output format of the terminal screen, and outputs it. The RCP of a communication terminal receives radio signals from RFID tags included in a number of products located within one meter, but transmits data information of RFID tags having a high number of data reception times to RFID applications. The RFID application outputs data information received from one RFID tag at a time on the terminal screen.

The communication terminal executes an RFID application that receives information of an RFID tag located in the vicinity and outputs the information on a terminal screen. When a communication terminal approaches a product displayed on the showcase, product information is displayed on the screen of the communication terminal. The RFID application of the communication terminal receives the product information from the RCP (S104) and outputs the received product information to the terminal screen (S105).

Although the present invention has been described in more detail with reference to Examples, the present invention is not necessarily limited to these Examples, and various modifications can be made without departing from the spirit of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, when a plurality of RFID tags are in close proximity to the communication terminal, product information received from one RFID tag can be output, so that the communication terminal can display product information that the user wants to view through the terminal screen. It has the effect of checking right away.

In addition, since the communication terminal operates as an RFID reader and outputs data information of the RFID tag having a high number of data reception times on the terminal screen, the user can have an effect of real-time checking of the adjacent product information according to the direction directed to the communication terminal. .

Claims (20)

A communication terminal comprising an RFID reader for controlling an RF module in radio frequency communication with an RFID tag, A reader control protocol module that wirelessly communicates with nearby RFID tags to transfer data information of an RFID tag with a high number of data receptions per communication cycle to an RFID application; And a processor for executing an RFID application that receives data information of an RFID tag from the reader control protocol module and outputs product information corresponding to one RFID tag on a screen. The method of claim 1, wherein the reader control protocol module A reader control protocol for controlling the RF module to receive data from an RFID tag according to a predetermined communication protocol; And a data output unit configured to measure the number of times of data reception for the RFID tag of the reader control protocol and to transmit data information of the RFID tag having a high number of times of data reception to an RFID application. The method of claim 1, wherein the reader control protocol module A communication terminal having a radio frequency identification function, characterized in that configured to measure the number of times of data reception for each RFID tag by controlling a communication cycle for controlling the number of radio communication between the RF module and the RFID tag. The method of claim 1, wherein the reader control protocol module And measuring the number of times of data reception for each RFID tag to transmit data information of the RFID tag having the highest number of times of data reception to an RFID application. The method of claim 1, wherein the reader control protocol module And comparing the number of times of data reception for each RFID tag and a communication cycle for the RFID tag, and transmitting data information of the RFID tag having the same number to the RFID application. The system of claim 1, wherein the processor is And a RFID application and a reader control protocol module configured to directly open a data communication channel to transmit and receive data. The processor of claim 6, wherein the processor is Communication with a radio frequency identification function, which is configured to run an RFID application on a standard platform of a mobile communication system and to receive data information of an RFID tag by directly communicating data with a reader control protocol module operating at an RFID application and a hardware layer. terminal. The system of claim 1, wherein the processor is Radio frequency, characterized in that configured to run the RFID application to operate the communication terminal as an RFID reader to receive data from a plurality of RFID tags located in the vicinity, but output data information of one RFID of which the number of times of data reception is high Communication terminal with identification function. The method of claim 1 wherein the RFID application is A communication terminal having a radio frequency identification function, characterized in that for changing the communication cycle of the reader control protocol module, modifying the reference data count again and receiving data information corresponding to the RFID tag from the reader control protocol module. 10. The method of claim 9, wherein the RFID application is And receiving data information corresponding to an RFID tag from a reader control protocol module, outputting the data information for a predetermined time, checking a user input, and outputting data information corresponding to another RFID tag. Communication terminal having a. Wirelessly communicating with a nearby RFID tag in a reader control protocol module to transmit data information of an RFID tag having a high number of data reception times to an RFID application; And receiving, by an RFID application, data information of an RFID tag from the reader control protocol module and outputting product information corresponding to one RFID tag on a screen. The method of claim 11, wherein the reader control protocol module Controlling the RF module to receive data from the RFID tag according to a predetermined communication protocol; And measuring the number of times of data reception for the RFID tag and transmitting the data information of the RFID tag with a high number of times of data reception to an RFID application. The method of claim 11, wherein the reader control protocol module is And controlling a communication cycle for controlling the number of radio communications between the RFID module and the RFID tag, and measuring the number of data receptions for each RFID tag. . The method of claim 11, wherein the reader control protocol module Measuring the number of times of data reception for each RFID tag; And transmitting the data information of the RFID tag having the highest data reception rate to the RFID application. The method of claim 11, wherein the reader control protocol module And comparing the number of times of data reception for each RFID tag and the communication cycle for the RFID, and transmitting the data information of the RFID tag having the same number to the RFID application, wherein the communication has a radio frequency identification function. Reader method of the terminal. 12. The system of claim 11, wherein the RFID application is And a method of transmitting and receiving data by opening a data communication channel directly with a reader control protocol module, the reader method of a communication terminal having a radio frequency identification function. The method of claim 16 wherein the RFID application is Running on a standard platform of a mobile communication system; And performing data communication with a reader control protocol module operating at a hardware layer to receive data information of an RFID tag. 12. The system of claim 11, wherein the RFID application is Receiving data from a plurality of RFID tags located around the RFID reader; And outputting data information of one RFID tag having a high number of times of data reception among data information corresponding to a plurality of RFID tags. 12. The system of claim 11, wherein the RFID application is Changing the communication cycle of the reader control protocol module and modifying the reference data reception count again; And then receiving data information corresponding to the RFID tag from the reader control protocol module. 20. The system of claim 19, wherein the RFID application is Receiving data information corresponding to the RFID tag from the reader control protocol module and outputting the data information for a predetermined time; And a step of outputting data information corresponding to another RFID tag after checking a user input.

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