CN106991463A - The data read-write method of NFC label and NFC label - Google Patents

The data read-write method of NFC label and NFC label Download PDF

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Publication number
CN106991463A
CN106991463A CN201710213952.5A CN201710213952A CN106991463A CN 106991463 A CN106991463 A CN 106991463A CN 201710213952 A CN201710213952 A CN 201710213952A CN 106991463 A CN106991463 A CN 106991463A
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China
Prior art keywords
data
file
nfc
ndef
nfc label
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Granted
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CN201710213952.5A
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Chinese (zh)
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CN106991463B (en
Inventor
楼鹏
王旬贵
张吉红
康泽华
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Zhuhai Geehy Semiconductor Co Ltd
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Apex Microelectronics Co Ltd
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Publication of CN106991463A publication Critical patent/CN106991463A/en
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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G06K19/0707—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092

Abstract

The invention discloses the data read-write method of a kind of NFC label and NFC label.Data management system is set in NFC label, the encapsulation that multiple NDEF recorded or performed the NDEF records of relatively large data is read by data management system, and multiple NDEF are recorded into parsing or non-volatile memory cells are write direct, realize the storage and transmission of relatively large data, and, data head is set in non-volatile memory cells, by in data head each file index information perform targetedly or partial document data reading or rewriting, rewriting, realize the reading and write operation of data in more flexible NFC label.

Description

The data read-write method of NFC label and NFC label
This application claims enjoy in entitled " NFC label, NFC reader and the NFC label submitted on 04 01st, 2016 Data read-write method " Chinese patent application CN201610206809.9 priority, the entire disclosure of which is by drawing With being incorporated herein.
Technical field
The invention belongs to wireless communication field, it is related to a kind of NFC label for working in label and reader/writer mode, NFC and reads Write device and the data read-write method of NFC label.
Background technology
Near-field communication (Near Field Communication, abbreviation NFC), be one kind work in 13.56MHz (megahertz In frequency hereby), communication connection setup time was less than 1 second and communication distance is generally confined within the quick short distance within 10 centimetres High frequency wireless communication technology.It is currently based on NFC protocol specification NFCIP-1 (including the international standards of ISO/IEC 18092 and ECMA- 340 standards), the international standards of ISO/IEC 14443, the contactless smart card standard such as Japanese Industrial Standards (JIS) X 6319-4 determine The NFC device of justice may operate in reader/writer mode for NFC label, for the ad hoc mode between other NFC devices, 106kbps (thousand is supported for the NFC device in the snap gauge simulation models of other NFC readers, and based on different NFC standards Bits per second), the different message transmission rate such as 212kbps and 424kbps.Two kinds of communication patterns are supported between NFC device：It is logical Letter initiating equipment and target communication device all pass through power itself and the aggressive mode of alternate transport data (such as ad hoc mode)； Communication initiating equipment produces wireless signal and powered by electromagnetic field for target communication device, and target communication device passes through to existing Electromagnetic field is modulated to respond the Passive Mode (such as reader/writer mode and snap gauge simulation models) of communication initiating equipment.Generally in label and In reader/writer mode, NFC reader (mobile phone as supported NFC communication) is close to passive NFC label and produces wireless signal, NFC The antenna of label captures electric energy from the electromagnetic field of the wireless signal and powered for memory, and by the modulation to the electromagnetic field come The data that memory is stored are sent to NFC reader.Antenna and corresponding memory device are only needed due to passive NFC label and The characteristics of without additional battery, be simple to manufacture, with low cost and volume it is thin easy to carry, be now widely used for electronics label In card, anti-counterfeit recognition and electronic business card, the life given people brings great convenience.
At present, the agreement of NFC data communication is standardized by NFC forums (NFC Forum), and NFC forums define NFC Data interchange format (NFC Data Exchange Format, abbreviation NDEF) as between NFC device and NFC labels and The universal data format of NFC communication is carried out between NFC device.NDEF is using a NDEF message (NDEF Message) as once The data exchange structure of NFC communication, a NDEF message can be each comprising at least one NDEF records (NDEF Record) Individual NDEF recording carryings have data for communication as payload (NDEF Payload).When being communicated between NFC device, The data for needing to communicate are encapsulated into by the NFC generators (NFC generator) inside target communication device as payload In one or more NDEF record, and one or more NDEF records are sent to communication initiation as a NDEF message set Standby, the NDEF message received is parsed payload simultaneously by the NFC resolvers (NFC parser) inside communication initiating equipment NDEF is sent to be handled using (NDEF Application).
In existing NFC label, one NDEF of storage disappears in the form of single NDEF records in the memory of NFC label Breath, when NFC device reads NFC label as communication initiating equipment, NFC label directly regard the single NDEF records as one NDEF message is sent to NFC device, and single NDEF records are parsed payload simultaneously by the NFC resolvers inside NFC device NDEF applications are sent to be handled.
Due to only storing single NDEF records in existing NFC label, even if can be included in the single NDEF records many Individual NDEF subrecords are packaged as payload.But, due to the limitation of NFC communication speed, and target communication device and By data frame transfer between communication initiating equipment, single NDEF record datas amount crosses conference and causes the frame losing in NFC communication to pass Defeated to make communication error rate too high and bust this, the single NDEF record datas amount that current NFC label can be stored generally is limited System is within 8KB (kilobytes).So as to which current NFC label is can not to store and transmit tens of KB even several MB (Mbytes) Larger amount of data.
Moreover, be related to the storage of the data splitting of multiple files with transmission, generally using the plurality of file as effective Load is encapsulated into multiple NDEF subrecords, then the plurality of NDEF subrecords are encapsulated into single NDEF record storages to NFC marks In label., it is necessary to which the NDEF records in NFC label are all read and could be obtained after the parsing of NFC resolvers when reading file File destination, it is impossible to file therein selectively or is only partially read, it is necessary to which all files are encapsulated during write-in file Write into single NDEF records to NFC label, it is impossible to targetedly or only partially rewrite file therein, do not possess file The flexibility of read-write.
So as to which a kind of NFC label that can be stored and transmit relatively large data and one kind selectively read and write part The NFC label reading/writing method of data is desirable.
The content of the invention
In order to solve NFC label present in prior art can not store and transmit larger amount of data and reading and writing data not Flexibly the problem of, the invention provides the data read-write method of a kind of new NFC label, NFC reader and NFC label.
A kind of NFC label, including：
NFC antenna, the transmitting-receiving that the NDEF of the data compared with small data quantity is recorded is carried by demodulation or modulated electromagnetic field Communication；
Non-volatile memory cells, store the data of larger data amount；
Data management system, including data read-out unit, NDEF message encapsulation unit and NDEF message sending units, data Sensing element is used for the data read-out for the larger data amount for being stored non-volatile memory cells, and NDEF message encapsulation unit is used Recorded in the data of the larger data amount are packaged into multiple carryings compared with the NDEF of the data of small data quantity, NDEF message sends single The NDEF records that member is used for by the plurality of carrying compared with the data of small data quantity are sent by NFC antenna modulated electromagnetic.
Based on embodiments of the invention, the data of above-mentioned larger data amount record at least one NDEF.
A kind of NFC label, including：
NFC antenna, the transmitting-receiving that the NDEF of the data compared with small data quantity is recorded is carried by demodulation or modulated electromagnetic field Communication；
Non-volatile memory cells, store the data of larger data amount；
Data management system, including date read-write cell, NDEF message encapsulation unit, NDEF message parsing units and NDEF Messaging unit, date read-write cell is used for the data read-out for the larger data amount for being stored non-volatile memory cells, NDEF message encapsulation unit is used to the data of the larger data amount being packaged into NDEF of multiple carryings compared with the data of small data quantity Record, the NDEF records that NDEF messaging units are used for by the plurality of carrying compared with the data of small data quantity are adjusted by NFC antenna Electromagnetic field processed is sent, and, NDEF messaging units are used for data of multiple carryings compared with small data quantity for receiving NFC antenna NDEF records send to NDEF message parsing units, NDEF message parsing units are used for the plurality of carrying compared with small data quantity The NDEF records of data are parsed and extract the data of the larger data amount in payload, and the data of the larger data amount are passed Date read-write cell is given, date read-write cell is used to write the data of the larger data amount to non-volatile memory cells.
Based on embodiments of the invention, above-mentioned multiple carryings include at least one compared with the NDEF records of the data of small data quantity NDEF subrecords, by this, at least one NDEF subrecord sends date read-write cell to NDEF message parsing units.
Based on embodiments of the invention, the NFC antenna of above-mentioned NFC label is additionally operable to capture electric energy from electromagnetic field.
Based on embodiments of the invention, above-mentioned non-volatile memory cells include：
Directory area, the total data length of description data head, the total data length of data field, the file number of data field, NFC The title of label, type, function, date of manufacture, file generated date, file rewrite date and corresponding identification code or verification More than code at least one information；
Data head, describes the filename of each file of data field, the identification code of file type or each file, more than sequence code At least one information, and, the initial address and data length of each file or initial address and the end address of each file；
Data field, initial address and the initial address of data length or each file according to each file described by data head And end address, store each file data.
Based on embodiments of the invention, the type of above-mentioned NFC label is used for the application plan for determining the file data of NFC label Slightly.
A kind of NFC label, including：
NFC antenna, the transmitting-receiving for carrying out NDEF records by demodulation or modulated electromagnetic communicates；
Non-volatile memory cells, the data of the multiple files of storage, including directory area, data head and data field, directory area, Total data length, the total data length of data field, the file number of data field, the title of NFC label, the class of data head are described Type, function, date of manufacture, file generated date, file are rewritten more than date and corresponding identification code or check code at least one Kind of information, data head describes the filename of each file of data field, the identification code of file type or each file, more than sequence code At least one information, and, the initial address and data length of each file or initial address and the end address of each file, data Area, according to the initial address and the initial address and end address of data length or each file of each file described by data head, Store each file；
Data management system, including data read-out unit, NDEF message encapsulation unit and NDEF message sending units, data Sensing element is used for the data read-out for being stored non-volatile memory cells, and NDEF message encapsulation unit is used to seal the data NDEF records are dressed up, NDEF message sending units are used to send NDEF records by NFC antenna modulated electromagnetic.
A kind of method for reading data of NFC label, the NFC label includes NFC antenna, data management system and non-volatile Memory cell, the non-volatile memory cells include directory area, data head and data field, and the method for reading data includes：
The directory area and data head of data management system loading non-volatile memory cell, obtain title, the class of NFC label Filename, file type or document identifier code, the document order code for multiple files that type, data field are stored, and data field Initial address, data length or the end address of the multiple files stored；
Filename, the text for multiple files that data management system is stored according to the title, type, data field of NFC label At least one of part type or document identifier code, document order code information determine the file for multiple files that data field is stored Reading order；
Data management system indexes initial address, data length or the end address of each file according to file reading order, Each file is read from the data field of non-volatile memory cells in order；
Multiple NDEFs of the data management system by each Document encapsulation of reading for carrying compared with the data of small data quantity are recorded, and Sent by NFC antenna modulated electromagnetic.
Based on embodiments of the invention, above-mentioned data management system determines that data field is stored according to the type of NFC label Multiple files file reading order.
A kind of method for writing data of NFC label, the NFC label includes NFC antenna, data management system and non-volatile Memory cell, the non-volatile memory cells include directory area, data head and data field, and the method for writing data includes：
The directory area and data head of data management system loading non-volatile memory cell, obtain title, the class of NFC label Filename, file type or document identifier code, the document order code for multiple files that type, data field are stored, and data field Initial address, data length or the end address of the multiple files stored；
NFC antenna demodulation electromagnetic field obtains received NDEF message；
Data management system parses NDEF message and extracts the data in payload, according at least one included by data Individual file and write-in type, confirm that independent rewriting or at least one file of the write-in type at least one file are write again Enter；
If writing the independent rewriting that type is at least one file, the initial address of data management system foundation file, Data length or end address perform the index informations such as the rewriting of at least one file, and the initial address of document retaining；
Re-write if write-in type is at least one file, the initial address of data management system foundation file, number Re-writing at least one file is performed according to length or end address, and regenerates new filename, file type, text The index informations such as initial address, data length or the end address of part identification code, document order code and file, by the new rope Fuse breath is write to data head.
Compared with prior art, NFC label provided by the present invention and the reading/writing method for NFC label, in NFC marks Data management system is set in label, the NDEF notes that multiple NDEF recorded or performed relatively large data are read by data management system The encapsulation of record, and multiple NDEF are recorded into parsing or non-volatile memory cells are write direct, realize depositing for relatively large data Storage and transmission, also, data head is set in non-volatile memory cells, held by the index information of each file in data head Row targetedly or partial document data reading or rewriting, rewriting, realize in more flexible NFC label the reading of data with Write operation.
Other features and advantages of the present invention will be illustrated in the following description, and partly becomes from specification It is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by wanting in specification, right Structure specifically noted in book and accompanying drawing is asked to realize and obtain.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, the reality with the present invention Apply example to be provided commonly for explaining the present invention, be not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural representation of NFC label provided by the present invention；
The structural representation for the NFC label that Fig. 2 is provided by the embodiment of the present invention three；
The structural representation for the NFC label that Fig. 3 is provided by the embodiment of the present invention four；
The data store organisation figure for the NFC label that Fig. 4 is provided by the embodiment of the present invention.
Embodiment
Below, technical scheme is described in detail in conjunction with the accompanying drawings and embodiments.Ordinary skill people Member with optimal implementation it should be understood that in order to simplify description process and clearly appear from technical scheme, be only subject to below Illustrate, as long as not constituting conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, The technical scheme formed should be within protection scope of the present invention.
Fig. 1 is the structural representation of NFC label provided by the present invention.As shown in figure 1, NFC label 2 includes：For from Electromagnetic field captures electric energy and by demodulation or modulated electromagnetic receive and dispatch the NFC antenna 21 of communication, and being stored with can be as effective The non-volatile memory cells 22 of the data of load, and, NFC label 2 also includes data management system 23, for non-volatile The data that property memory cell 22 is stored are managed, read or stored, the data that non-volatile memory cells 22 are stored It is packaged into the NDEF message formats of the suitable transmission of NFC antenna 21 or is parsed into the NDEF message that NFC antenna 21 is received suitable The data format that non-volatile memory cells 22 are stored.
Specifically, NFC antenna 21 can be the coil for encompassing circular or oval or other arbitrary shapes.It is non-volatile Property memory cell 22 can be using the nonvolatile memory such as EEPROM, EPROM, FLASH, ferroelectric memory or phase transition storage Part is realized, it would however also be possible to employ the volatile memory such as one or more registers, buffer and RAM and the above are at least one The combination of nonvolatile memory is realized.Data management system 23 can be the singlechip controller being separately provided, can also Multiple control electrical combinations that right and wrong volatile memory cell 23 is integrated in one, such as using the SOC being designed on wafer System.
For different storage classes, data management system 23 provided by the present invention can have a variety of implementations, under Structure, which elaborates, to be realized to NFC label 2 provided by the present invention with reference to accompanying drawing 2-3 in face.
Embodiment one
The structural representation for the NFC label that Fig. 2 is provided by the embodiment of the present invention one.The NFC marks that the present embodiment is provided The non-volatile memory cells 22 of label 2 store larger amount of data (such as in the form of the unencapsulated former data recorded into NDEF File more than 1MB, its data volume has exceeded what can be recorded by the stable transmission of NFC antenna to the single NDEF of NFC reader Payload can carry the data volume of data).As shown in Fig. 2 the data management system 23 of NFC label 2 is sent out including NDEF message Unit 231a, data read-out unit 232c and NDEF message encapsulation unit 233 are sent, data read-out unit 232c is used for will be non-volatile Property the data read-out that is stored of memory cell 22, NDEF message encapsulation unit 233 is used for read-out by data read-out unit 232c Larger amount of data be packaged into multiple NDEF record, a part for the relatively large data is encapsulated into as payload each In individual NDEF record, and each small amount of data of NDEF recording carryings (such as less than 8KB NDEF records) is with can be by NFC Antenna 21 is stable to be sent into NFC reader, and NDEF message sending units 231a, which is used to record orderly multiple NDEF, to be made Sent at least one NDEF message by the modulated electromagnetic of NFC antenna 21.
Optionally, NDEF message sending units 231a and NDEF message encapsulation unit 233, which can also merge, is set to individually The NDEF message encapsulation transmitting element that one control message is encapsulated and sent, or using equitant multiple control circuit groups Close.
Optionally, the type for the NFC standard that can be supported according to NFC reader and the traffic rate supported are flexible Set it is packaged into multiple NDEF record the data volume of carried payload, for example, can for relatively low traffic rate To encapsulate data into the more NDEF records of carrying more small data quantity, to improve the stability of NFC communication.
Optionally, NDEF message sending units 231a according to NDEF message encapsulation unit 233 by the number of the larger data amount According to packaged into number of order of multiple carryings compared with the NDEF records of the data of small data quantity by the plurality of carrying compared with small data quantity According to NDEF records sent by NFC antenna modulated electromagnetic.
Further, NDEF message sending units 231a is before the NDEF records of the first small amount of data of carrying are sent First send a NDEF for carrying start mark to record to represent that multiple NDEF record the beginning sent, and send this Last read retransmits the NDEF for carrying an end mark note after carrying the NDEF records of small amount of data Record to represent that this multiple NDEF records the completion sent；Or, first carrying is being sent by NDEF message sending units 231a During the NDEF records of small amount of data enterprising start of line mark, and last that this reads in transmission are recorded in the NDEF During the NDEF records for carrying small amount of data end mark is carried out on NDEF records.It should be noted that non-volatile Memory cell 22 can store individual data, such as single file, can also store same type of multiple different pieces of informations, for example Multiple documents, can also store different types of multiple different pieces of informations, such as document and picture, and it can regard individual data Execute encapsulation is simultaneously sent, optionally, can also be directed to multiple different pieces of informations, each data are packaged into multiple NDEF respectively Record and has sent packaged by one data into multiple NDEF record after retransmit next data multiple NDEF record, Wherein, each data execute encapsulation is not limited into the order that NDEF is recorded.
It should be noted that the data that non-volatile memory cells 22 are stored can also be one or more NDEF message In at least one NDEF records, the NDEF message encapsulation unit 233 that it still can be provided using the present embodiment by this extremely The new NDEF that few NDEF records Reseal into suitable data amount as the data of payload is recorded.For example, when non- When volatile memory cell 22 stores that NDEF record data amounts are larger to be difficult to send, NDEF records can be Resealed into Multiple new NDEF records compared with small data quantity, and the plurality of new NDEF records are sent, it is feasible, can also will be many The new NDEF recording and sendings that individual less NDEF records Reseal into a larger data amount as subrecord are gone out.
The NFC label provided based on the present embodiment, data management system can be directly by non-volatile memory cells institute The data of storage are packaged into multiple NDEF recording and sendings and gone out so that NFC label can not only store and send larger amount of Data, and the encapsulation of NDEF records can be flexibly performed according to NFC communication.
Embodiment two
The structural representation for the NFC label that Fig. 3 is provided by the embodiment of the present invention two.The NFC provided with embodiment one Label is similar, and the non-volatile memory cells 22 for the NFC label 2 that the present embodiment is provided are same to be remembered with unencapsulated into NDEF The form of the former data of record stores larger amount of data.As shown in figure 3, the data management system 23 that the present embodiment is provided NDEF messaging units 231b and date read-write cell 232d, the NDEF message sending units provided compared to embodiment one 231a and data sensing element 232c, the function setting not only sent with data read-out and NDEF message, also disappears with NDEF The function setting that breath is received and data write.Due to date read-write cell 232d, NDEF message encapsulation unit 233 and NDEF message Data read-out that Transmit-Receive Unit 231b is stored non-volatile memory cells 22, it is packaged into the original that NDEF recording and sendings are gone out Reason is identical with embodiment one, will not be repeated here.
The data management system 23 that the present embodiment is provided includes NDEF messaging units 231b, date read-write cell 232d, NDEF message encapsulation unit 233 and NDEF message parsing units 234, wherein, NDEF message parsing units 234 are used to solve Analysis NDEF is recorded and is extracted the data in its payload.
When NFC reader writes data to NFC label 2, the demodulation electromagnetic field of NFC antenna 21 of NFC label 2 obtains being connect The NDEF message of receipts, NDEF messaging units 231b sends this comprising multiple specific order of NDEF NDEF message recorded To NDEF message parsing units 234, the plurality of NDEF is recorded and is parsed and extract payload by NDEF message parsing units 234 In data, send the larger amount of data to date read-write cell 232d, date read-write cell 232d is larger amount of by this Data are write into non-volatile memory cells 22.
Further, what NDEF messaging units 231b received that NFC reader sends carries start mark NDEF records when represent the beginning that multiple NDEF record is sent, and then start to receive the first small amount of data of carrying NDEF is recorded, and represents that this multiple NDEF records the complete of transmission when receiving the NDEF for carrying an end mark record Into；Or, risen on the NDEF records of the small amount of data of first carrying for being sent to NDEF messaging units 231b Begin mark, and carries out end mark on last NDEF record for carrying small amount of data of this transmission, by NDEF The judgement that messaging unit 231b completion messages are received.
It should be noted that date read-write cell 232d writes the larger amount of data to non-volatile memory cells 22 When, can according to the sequencing of the NDEF records received since the first address of non-volatile memory cells 22 backward one by one Write-in stores the larger amount of data, and the set order that can also be stored according to non-volatile memory cells 22 is deposited regardless of front and rear Store up the larger amount of data of address.
Optionally, NDEF messaging units 231b is it can also be provided that often receive a NDEF record just by the NDEF Record is sent to NDEF message parsing units 234, is recorded the NDEF by NDEF message parsing units 234 and is parsed and extracted The data in load are imitated, are write by date read-write cell 232d into non-volatile memory cells 22.
It should be noted that the NDEF message parsing units 234 that are provided of the present embodiment be used to parsing NDEF records so as to It is subsequently more flexible to Reseal into required new NDEF records to send by the data parsed.When NFC days When the NDEF records that line 21 is received include NDEF subrecords, NDEF message parsing units 234 can be after parsing NDEF records Continue to parse NDEF subrecords up to the data in the payload for extracting all NDEF records forms, can also only parse NDEF is recorded and is sent to date read-write cell 232d using NDEF subrecords as data.
Optionally, date read-write cell 232d can also be provided separately is used for the data that control data is read for independent one Sensing element (such as Fig. 2 232c) and an independent data write unit for control data write-in, likewise, NDEF message Transmit-Receive Unit 231b can also be provided separately is used for the NDEF message sending units for controlling NDEF message to send (such as independent one Fig. 2 231a) and an independent NDEF message reception units for controlling NDEF message sinks.
The NFC label provided based on the present embodiment, data management system can will be packaged with the multiple of relatively large data Directly by data storage to non-volatile memory cells after NDEF record parsings, so as to it is flexible when sending data should Larger amount of data are packaged into multiple NDEF recording and sendings and gone out.
NFC label based on embodiment one or embodiment two realizes structure, when non-volatile memory cells store it is multiple During the data of file composition, in order to targetedly or only partially perform file read-write for greater flexibility, the invention provides one Plant the data store organisation of the non-volatile memory cells of NFC label.
Embodiment three
The data store organisation schematic diagram for the NFC label that Fig. 4 is provided by the embodiment of the present invention three.Non-volatile memories list The operation program needed for being run for data storage management system, the firmware area instructed can be provided with member 22 and for storing The memory block of data including multiple files and the index list for data management related to these data.Such as Fig. 4 institutes Show, non-volatile memory cells 22 include：Firmware area 221, runs required operation program for data storage management system, refers to Storage firmware needed for the firmwares such as order, and the operation of other this NFC labels；Directory area 222, is arranged at data head 223 and data Before area 224, the file of the total length information, the total length information of data field 224, data field 224 of data head 223 is described At least one information such as number, for indexing simultaneously identification data first 223 and data field 224 respectively, directory area can also include this NFC The title of label, type, function, date of manufacture, file generated date, file rewrite date and corresponding identification code or verification The information such as code, the type of NFC label can be marked with identification code, the application strategy of the data for determining NFC label, NFC The title of label could be arranged to change or can not change, for being recognized by the type of NFC label and the title of NFC label And distinguish NFC label；Data head 223, the first address information (starting of each file is respectively described according to the storage order of each file Address) and length information, single file is searched respectively for the initial address and the length of data by each file And read-write, optionally, the first address information and tail address information that data head 223 can also describe each file respectively (terminate ground Location), single file is indexed by the initial address and end address of each file, wherein, data head 223 can also be added and retouched State the filename of each file, the identification code of file type or each file, sequence code；Data field 224, is retouched according to data head 223 The first address information and data length information for each file stated, or, first address information and tail address information store each number of files According to.
The information of directory area and data head is used to be indexed the file of data field as index information.
Optionally, the total length information of data head 223 and the total length information of data field 224, can also be respectively respective The original position in area is individually described, for example, 2 bytes describe the total length of directory area before directory area, in data head Preceding 2 byte describe the total length of data head；Moreover, directory area 222 can also can also be merged into individually with data head 223 An information area, the information for describing this NFC label, and the file number of data field, filename and each file Initial address, data length or end address.
When the NFC antenna of NFC label captures electric energy from electromagnetic field, data management system and non-volatile memory cells are obtained Required electric energy must be run, data management system performs number since the firmware area load operating program of non-volatile memory cells According to reading or the management role such as write-in, wherein, data management system preferentially read non-volatile memory cells directory area and Information in data head, can send these information or by data management system from line index, for recognizing NFC label Information, and each file of index initial address, data length or end address.It is literary to wherein at least one when receiving During the read-write requests of part, data management system performs number according to initial address and data length corresponding to file to this document According to reading or rewriting, or, when the read-write requests for receiving the data to a certain initial address and data length, data pipe Reason system points to the initial address and the data to defined data length perform the reading or rewriting of data.
It should be noted that directory area and data head are preferably stored in before data field by the present embodiment, optionally, also may be used So that directory area or data head are stored in into other addresses or with other specific sequential storages, if preferentially read this directory area and The index information of data head simultaneously carrys out the purpose that each file in index data area belongs to the present invention with this.
It should be noted that be not limited, the file described by the present embodiment can also be the shape recorded with NDEF The data of formula storage, likewise, the single file that each file described by the present embodiment can be independent type can also be The compressed package of the aggregate of multiple files, such as file, can also be a part for single file, one in such as multiple compressed packages It is individual.
The data store organisation of the NFC label provided based on the present embodiment, data management system can be according to data head Initial address, length information or the initial address of each file of description, end address individually index each file, and are directed to Property or only partially perform file read-write, provide more flexible read-write mode for the multifile data of NFC label.
The data store organisation of the NFC label provided based on embodiment three, for the multifile reading and writing data of NFC label There can be implemented below method.
Example IV
The data for realizing the NFC label that structure and embodiment three are provided of the NFC label provided based on embodiment one Storage organization, the multifile method for reading data of NFC label can include below scheme：
Preparation process：NFC antenna captures electric energy from electromagnetic field, and data management system and non-volatile memory cells are obtained Electric energy needed for startup optimization, data management system is transported since the firmware area load operating program of non-volatile memory cells OK；
Step 301：The directory area and data head of data management system loading non-volatile memory cell, obtain NFC label Title, type, data field filename, file type or document identifier code, the document order code of the multiple files that are stored, with And initial address, data length or the end address of multiple files that data field is stored；
Step 302：The text for multiple files that data management system is stored according to the title, type, data field of NFC label At least one of part name, file type or document identifier code, document order code information determine multiple texts that data field is stored The file reading order of part；
Step 303：Data management system indexes initial address, data length or the knot of each file according to file reading order Beam address, in order reads each file from the data field of non-volatile memory cells；
Step 304：Multiple NDEFs of the data management system by each Document encapsulation of reading for carrying compared with small data quantity are recorded, And sent by NFC antenna modulated electromagnetic.
Optionally, data management system determines the data of NFC label according to the type (such as type identification code) of NFC label Application strategy, and then the reading priority of each file is determined, so that it is determined that the file reading order of multiple files；Optionally, Data management system can determine the file reading order of each file with the document order code of each file of direct basis；It is optional , when can not clearly determine the reading priority or file reading order of file, data management system can also directly by Multiple files of order can not be determined according to sequentially reading for being stored.
Optionally, the order that data management system is sequentially read out reading according to file after each file performs NDEF records Encapsulation, alternative realization, data management system first can also read each file according to the storage order of each file, then foundation The document order code of the type of NFC label or each file determines the order of each file, and then according to identified each file Order performs the encapsulation of NDEF records.
Optionally, data management system be could be arranged to first read out after a file, and this document is encapsulated and completed, then is read Take next file.
The method for reading data of the NFC label provided based on the present embodiment, data management system can direct basis NFC marks The type of label or the sequence code of each file of defined determine the reading order of each file, and then perform each number of files in order According to reading and NDEF message encapsulation.
Embodiment five
The data for realizing the NFC label that structure and embodiment three are provided of the NFC label provided based on embodiment two Storage organization, the multifile method for writing data of NFC label can include below scheme：
Preparation process：NFC antenna captures electric energy from electromagnetic field, and data management system and non-volatile memory cells are obtained Electric energy needed for startup optimization, data management system is transported since the firmware area load operating program of non-volatile memory cells OK；
Step 401：The directory area and data head of data management system loading non-volatile memory cell, obtain NFC label Title, type, data field filename, file type or document identifier code, the document order code of the multiple files that are stored, with And initial address, data length or the end address of multiple files that data field is stored；
Step 402：NFC antenna demodulation electromagnetic field obtains received NDEF message；
Step 403：Data management system parses NDEF message and extracts the data in payload, according to included by data At least one file and write-in type, confirm write-in type at least one file independent rewriting or at least one file Re-write；
Step 404：If writing the independent rewriting that type is at least one file, data management system rises according to file Beginning address, data length or end address perform the indexes such as the rewriting of at least one file, and the initial address of document retaining Information；
Step 405：Re-write if write-in type is at least one file, starting of the data management system according to file Address, data length or end address perform re-writing at least one file, and regenerate new filename, file Type, document identifier code, the index information such as initial address, data length or end address of document order code and file, will The new index information is write to data head.
Optionally, when the write-in of file be related to the filename of file, file type, document identifier code, document order code with And file initial address, the change of at least one index information of data length or end address when, data management system should Write-in type is defined as re-writing for file, when not being related to the change of at least one index information of the above, data management system The write-in type is defined as the rewriting of file by system.
It should be noted that the data that data management system is extracted can also only include at least one file, foundation At least one of filename, file type or the document identifier code of file validation of information writes type, and execution changes accordingly Write or re-write.
The method for writing data of the NFC label provided based on the present embodiment, data management system can directly perform file Rewriting or re-write and retain according to write-in type or generate new index information, be that follow-up file is read or write-in is done It is good to prepare.
Embodiment six
When NFC label provided by the present invention and NFC reader, which are worked in, to be communicated in label and reader/writer mode, in order to Digital independent or the write-in of NFC label provided by the present invention are preferably performed, a kind of NFC reader is present embodiments provided, It is provided with the NFC reader for the NFC antenna of NFC communication and for parsing the NFC parsings that NDEF is recorded in NDEF message Device, the NFC generators for data or instruction to be packaged into NDEF records, wherein, it is also equipped with least in the NFC read write lines One application program (Application, abbreviation APP) that can be handled the data of NFC label, NDEF applications are (i.e. The application program) be used for via NFC communication obtain the title of NFC label, multiple files that type, data field are stored file Initial address, the data for multiple files that name, file type or document identifier code, document order code, and data field are stored At least one of length or end address index information, and specified according at least one index information in the NFC label The reading order of multiple files, and the corresponding processing operation for reading file is performed, or, index and believe according at least one Breath specifies the write-in type of the NFC label, and performs the transmission processing of corresponding write-in file.
Optionally, at least one application program of NFC reader is by obtaining the type of NFC label, and is marked according to the NFC The type of label directly specifies the file reading order of multiple files in NFC label, for example, for different types of NFC label point The preferential reading order rule of different files is not set, or, optionally, at least one application program of NFC reader has User visualizes the operation interface with user mutual, can instruct specify multiple texts in NFC label by the preferential reading of user The file reading order of part, for example, the NFC reader can be the mobile phone of a support NFC communication, the application program can be A application APP in mobile phone, this is using APP by obtaining filename or file type in NFC label and being grasped in visualization Make to be shown to user in interface, clicked on by user or the selected corresponding file preferentially read, meanwhile, it is all that need not read The file number for needing to read can also be selected during file by user.
Optionally, at least one application program of the NFC reader can by obtaining title, the type of NFC label, according to According to the direct specified file reading order of the type of NFC label, or, can by the filenames of the multiple files for obtaining NFC label, File type or document identifier code, the reading order of each file is specified according to filename or file type, and by the number of NFC label The reading of the file of respective sequence is performed according to the initial address of each file, data length or end address information according to management system Take, or, can also be by obtaining title, the filename of type or multiple files, file type or the file identification of NFC label Code is to determine the reading order of each file, and the initial address according to each file, data length or end address information directly refer to The data management system for determining NFC label reads number of files according to each initial address and corresponding data length or end address According to.
Optionally, at least one application program of the NFC reader can write filename, the file of file by sending Type or document identifier code and file data is write accordingly, by the data management system of NFC label according to filename or text Part type performs the rewriting of file, or, initial address, data length or the end address of file can be write by directly transmitting Information and corresponding write-in file data simultaneously specify the data management system of NFC label to perform file according to initial address Rewrite, or, can be by directly transmitting write-in file data, and directly performed from number by the data management system of NFC label Rewritten according to the file of area's first address.
The NFC reader provided based on embodiment six, for the multifile reading and writing data of NFC reader and NFC label There can be following several implementation methods.
Embodiment seven
The data for realizing the NFC label that structure and embodiment three are provided of the NFC label provided based on embodiment one Store the data for including multiple files in storage organization, and the NFC reader that embodiment six is provided, NFC label, and Corresponding directory area and data head are provided with before data field, NFC reader obtains directory area and data head and specifies NFC label institute The multifile method for reading data for the file to be read can include below scheme：
Preparation process：NFC reader and NFC label close to and set up NFC communication, the NFC antenna of NFC label is read from NFC Write and electric energy is captured in the electromagnetic field that device is launched, the data management system and non-volatile memory cells of NFC label are started Electric energy needed for operation, data management system brings into operation from the firmware area load operating program of non-volatile memory cells；
Step 501：The directory area and data head of the data management system loading non-volatile memory cell of NFC label, are obtained Take filename, file type or document identifier code, the file for multiple files that the title, type, data field of NFC label stored Sequence code, and initial address, data length or the end address of multiple files that data field is stored；
Step 502：The data management system of NFC label by the title, type, data field of NFC label stored it is multiple Filename, file type or document identifier code, the document order code at least a portion Information encapsulation of file are carrying compared with small data At least one NDEF information record of amount, and sent by the NFC antenna modulated electromagnetic of NFC label to NFC reader；
Step 503：The NFC antenna of NFC reader obtains at least one NDEF information record, via NFC resolver solutions Filename, file type or the file of the multiple files stored after analysis and by the title, type, data field of the NFC label are known The application programs of at least a portion information transmission to NFC reader such as other code, document order code；
Step 504：The application program of the NFC reader is according to the type of NFC label or according to user to the text to be read The selected filename or file type and the reading order of multiple files for determining the file to be read of the order of part, NFC read-writes The reading order of the filename or file type of the file to be read and multiple files is instructed and encapsulated by the NFC generators of device Into carrying compared with small data quantity at least one NDEF instruct record, and by NFC reader NFC antenna by electromagnetic field send to NFC label；
Step 505：The NFC antenna demodulation electromagnetic field of NFC label obtains at least one NDEF instructions and records and send to The data management system of NFC label；
Step 506：The data management system of NFC label parses and obtains what the application program of NFC reader to be read The filename or file type of file and the reading order of multiple files, and initial address according to each file, data length Or end address information, each file is read from the data field of non-volatile memory cells in order；
Step 507：The data management system of NFC label is multiple compared with small data quantity to carry by each Document encapsulation of reading NDEF data records, and sent by the NFC antenna modulated electromagnetic of NFC label to NFC reader；
Step 508：The NFC antenna of NFC reader obtains at least one NDEF data record, via NFC resolver solutions Send the application program of NFC reader after analysis and by these files to；
Step 509：The application program of NFC reader performs processing to the file read.
Optionally, step 502~506 can also be performed with following steps：
Step 502 '：The data management system of NFC label by the title, type, data field of NFC label stored it is multiple At least a portion information such as filename, file type or the document identifier code of file, document order code, and data field are stored At least a portion Information encapsulation such as initial address, data length or the end address of multiple files be carrying compared with small data quantity At least one NDEF information record, and sent by the NFC antenna modulated electromagnetic of NFC label to NFC reader；
Step 503 '：The NFC antenna of NFC reader obtains at least one NDEF information record, via NFC resolver solutions Filename, file type or the file of the multiple files stored after analysis and by the title, type, data field of the NFC label are known The initial address for multiple files that at least a portion information and the data fields such as other code, document order code are stored, data length Or the application program of at least a portion information transmission to NFC reader such as end address；
Step 504 '：The application program of the NFC reader is according to the type of NFC label or according to user to the text to be read The selected filename or file type and the reading order of multiple files for determining the file to be read of the order of part, and according to will Initial address, data length or the end address information of each file read describe file and read instruction, the NFC of NFC reader Initial address, data length or the end address information of each file that generator will be read and the reading order of multiple files Instruction is packaged into carrying and instructs record compared with least one NDEF of small data quantity, and passes through electromagnetism by the NFC antenna of NFC reader Field is sent to NFC label；
Step 505 '：The NFC antenna demodulation electromagnetic field of NFC label obtains at least one NDEF instructions and records and send to The data management system of NFC label；
Step 506 '：The data management system of NFC label parses and obtains what the application program of NFC reader to be read Initial address, data length or the end address information and reading order of file, directly in order by each file from non-volatile Property memory cell data field read.
Optionally, when user specifies or selectes multiple files and its corresponding reading order, the application journey of NFC reader Sequence can not also send the reading order of the plurality of file to NFC label, but only send reading order most preceding file Read requests (filename or file initial address and length information), and retransmited after the completion of this document reading in reading order The read requests (filename or file initial address and length information) of next file, so until having read all will read File, terminate NFC communication.
Optionally, when that need not read whole file, the application program of NFC reader can be by the starting point of file Location is positioned reads from the beginning of file, and positions the file size to be read by the length information to be read, or, when During a part through having read single file, the application program of NFC reader can be by positioning the initial address for needing to read (centre position of whole file), and the data volume to be read is controlled by the length information to be read.
The NFC reader and the method for reading data of NFC label provided based on the present embodiment, NFC reader passes through mesh Record the index that area and data head obtain multiple files of NFC label, so directly specify the filename to be read, file type or File address, is gone to index by the data management system of NFC label or is directly read corresponding file data and be packaged into NDEF notes Record is sent to NFC reader, so as to directly control the reading for the file destination or file to be read at NFC reader end There is provided more flexible NFC label file data reading mechanism for order.
Embodiment eight
The data for realizing the NFC label that structure and embodiment three are provided of the NFC label provided based on embodiment two Store the data for including multiple files in storage organization, and the NFC reader that embodiment six is provided, NFC label, and Corresponding directory area and data head are provided with before data field, NFC reader obtains directory area and data head and specifies NFC label institute The multifile data rewriting method of the file to be rewritten can include below scheme：
Preparation process：NFC reader and NFC label close to and set up NFC communication, the NFC antenna of NFC label is read from NFC Write and electric energy is captured in the electromagnetic field that device is launched, the data management system and non-volatile memory cells of NFC label are started Electric energy needed for operation, data management system brings into operation from the firmware area load operating program of non-volatile memory cells；
Step 601：The directory area and data head of the data management system loading non-volatile memory cell of NFC label, are obtained Take filename, file type or document identifier code, the file for multiple files that the title, type, data field of NFC label stored Sequence code, and initial address, data length or the end address of multiple files that data field is stored；
Step 602：The data management system of NFC label by the title, type, data field of NFC label stored it is multiple Filename, file type or document identifier code, the document order code at least a portion Information encapsulation of file are carrying compared with small data At least one NDEF information record of amount, and sent by the NFC antenna modulated electromagnetic of NFC label to NFC reader；
Step 603：The NFC antenna of NFC reader obtains at least one NDEF information record, via NFC resolver solutions Filename, file type or the file of the multiple files stored after analysis and by the title, type, data field of the NFC label are known The application programs of at least a portion information transmission to NFC reader such as other code, document order code；
Step 604：The application program of the NFC reader according to the filename of multiple files of NFC label, file type or Document identifier code, document order code are directly specified or according to user to the file to be rewritten of selected determination of the file to be rewritten The rewriting order of filename or file type and multiple files, the NFC generators of NFC reader are by the file to be rewritten Filename or file type, the rewriting order of multiple files and corresponding file rewrite data are packaged into carrying compared with small data quantity At least one NDEF instruction records, and sent by the NFC antenna of NFC reader by electromagnetic field to NFC label；
Step 605：The NFC antenna demodulation electromagnetic field of NFC label obtains at least one NDEF instructions and records and send to The data management system of NFC label；
Step 606：The data management system of NFC label parses and obtains what the application program of NFC reader to be rewritten The filename or file type of file, the rewriting order of multiple files and corresponding file rewrite data, and according to each file Initial address, data length or end address information, the file of the data field of non-volatile memory cells is rewritten in order.
Optionally, step 602~606 can also be performed with following steps：
Step 602 '：The data management system of NFC label by the title, type, data field of NFC label stored it is multiple At least a portion information such as filename, file type or the document identifier code of file, document order code, and data field are stored At least a portion Information encapsulation such as initial address, data length or the end address of multiple files be carrying compared with small data quantity At least one NDEF information record, and sent by the NFC antenna modulated electromagnetic of NFC label to NFC reader；
Step 603 '：The NFC antenna of NFC reader obtains at least one NDEF information record, via NFC resolver solutions Filename, file type or the file of the multiple files stored after analysis and by the title, type, data field of the NFC label are known The initial address for multiple files that at least a portion information and the data fields such as other code, document order code are stored, data length Or the application program of at least a portion information transmission to NFC reader such as end address；
Step 604 '：The filename of multiple files of the application program foundation NFC label of the NFC reader, file type Or document identifier code, document order code are directly specified or according to the selected determination file to be rewritten of the user to the file to be rewritten Filename or file type and multiple files rewriting order, and according to initial address, the data of each file to be rewritten Length or end address information describe file write-over instruction, the starting for each file that the NFC generators of NFC reader will be rewritten Address, data length or end address information, the rewriting order of multiple files and corresponding file rewrite data are packaged into and held At least one NDEF carried compared with small data quantity instructs record, and is sent by the NFC antenna of NFC reader by electromagnetic field to NFC Label；
Step 605 '：The NFC antenna demodulation electromagnetic field of NFC label obtains at least one NDEF instruction records, and transmits Data management system to NFC label；
Step 606 '：The data management system of NFC label parses and obtains what the application program of NFC reader to be rewritten Initial address, data length or the end address information of file, rewriting order and corresponding file rewrite data, directly by suitable Sequence rewrites the file of the data field of non-volatile memory cells.
Optionally, when user specifies or selectes multiple files and its corresponding rewriting order, the application journey of NFC reader Sequence can not also send the rewriting of the plurality of file order to NFC label, but only send rewriting order most preceding file Overwrite request (filename or file initial address and length information), and retransmited after the completion of this document rewriting in rewriting order The overwrite request (filename or file initial address and length information) of next file, so until having rewritten all will rewrite File, terminate NFC communication.
Optionally, when that need not rewrite whole file, the application program of NFC reader can be by the starting point of file Location is positioned rewrites from the beginning of file, and positions the file size to be rewritten by the length information to be rewritten, or, when need When being rewritten from the centre position of file, the application program of NFC reader can need the initial address rewritten (whole by positioning The centre position of individual file), and the data volume to be communicated is controlled by the length information to be rewritten.
Optionally, the application program of NFC reader is sending the filename to be rewritten or file type, or, to rewrite The initial address of file, data length or during end address information, will can also accordingly be set as at least one file The write-in type individually rewritten is sent to NFC label.
Under normal circumstances, when the non-volatile memory cells of NFC label use the storage that EEPROM etc. can be rewritten with step-by-step During device, only rewriting some positions can't impact to the data of other storage address, can be using described in the present embodiment File data Improvement rewrites partial data therein.
The NFC reader and the data rewriting method of NFC label provided based on the present embodiment, NFC reader passes through mesh Record the index that area and data head obtain multiple files of NFC label, so directly specify the filename to be rewritten, file type or File address, so as to directly control the file destination to be rewritten at NFC reader end, there is provided more flexible NFC marks Sign file data rewrite mechanism.
Embodiment nine
The data for realizing the NFC label that structure and embodiment three are provided of the NFC label provided based on embodiment two Store the data for including multiple files in storage organization, and the NFC reader that embodiment six is provided, NFC label, and Corresponding directory area and data head are provided with before data field, NFC reader obtains directory area and data head and specifies NFC label institute The multifile data for the file to be rewritten, which re-write method, can include different modes.
When the covering again of only limited file writes and is updated without the index information to directory area and data head When, it can be performed using the flow similar with the rewriting flow that embodiment eight is provided；When needing to directory area and data head When index information is updated or regenerated, below scheme can be included：
Preparation process：NFC reader and NFC label close to and set up NFC communication, the NFC antenna of NFC label is read from NFC Write and electric energy is captured in the electromagnetic field that device is launched, the data management system and non-volatile memory cells of NFC label are started Electric energy needed for operation, data management system brings into operation from the firmware area load operating program of non-volatile memory cells；
Step 701：The directory area and data head of the data management system loading non-volatile memory cell of NFC label, are obtained Take filename, file type or document identifier code, the file for multiple files that the title, type, data field of NFC label stored Sequence code, and initial address, data length or the end address of multiple files that data field is stored；
Step 702：The data management system of NFC label by the title, type, data field of NFC label stored it is multiple Filename, file type or document identifier code, the document order code at least a portion Information encapsulation of file are carrying compared with small data At least one NDEF information record of amount, and sent by the NFC antenna modulated electromagnetic of NFC label to NFC reader；
Step 703：The NFC antenna of NFC reader obtains at least one NDEF information record, via NFC resolver solutions Filename, file type or the file of the multiple files stored after analysis and by the title, type, data field of the NFC label are known The application programs of at least a portion information transmission to NFC reader such as other code, document order code；
Step 704：The application program of the NFC reader according to the filename of multiple files of NFC label, file type or Document identifier code, document order code are directly specified or according to user to the selected determination file to be rewritten of the file to be rewritten The rewriting order of filename or file type and multiple files, the NFC generators of NFC reader are by the file to be rewritten Filename or file type, the rewriting order of multiple files and corresponding file rewrite data and are packaged into carrying compared with small data quantity At least one NDEF instruction records, and sent by the NFC antenna of NFC reader by electromagnetic field to NFC label；
Step 705：The NFC antenna demodulation electromagnetic field of NFC label obtains at least one NDEF instructions and records and send to The data management system of NFC label；
Step 706：The data management system of NFC label parses and obtains what the application program of NFC reader to be rewritten The filename or file type of file, the rewriting order of multiple files and corresponding file rewrite data, and according to each file Initial address, data length or end address information, the file of the data field of non-volatile memory cells is rewritten in order, And it is long to regenerate initial address, the data of new filename, file type, document identifier code, document order code and file The index information such as degree or end address, the new index information is write to data head.
Optionally, step 702~706 can also be performed with following steps：
Step 702 '：The data management system of NFC label by the title, type, data field of NFC label stored it is multiple At least a portion information such as filename, file type or the document identifier code of file, document order code, and data field are stored At least a portion Information encapsulation such as initial address, data length or the end address of multiple files be carrying compared with small data quantity At least one NDEF information record, and sent by the NFC antenna modulated electromagnetic of NFC label to NFC reader；
Step 703 '：The NFC antenna of NFC reader obtains at least one NDEF information record, via NFC resolver solutions Filename, file type or the file of the multiple files stored after analysis and by the title, type, data field of the NFC label are known The initial address for multiple files that at least a portion information and the data fields such as other code, document order code are stored, data length Or the application program of at least a portion information transmission to NFC reader such as end address；
Step 704 '：The filename of multiple files of the application program foundation NFC label of the NFC reader, file type Or document identifier code, document order code are directly specified or according to the selected determination file to be rewritten of the user to the file to be rewritten Filename or file type and multiple files rewriting order, and according to initial address, the data of each file to be rewritten Length or end address information describe file rewritten instructions, the starting for each file that the NFC generators of NFC reader will be rewritten Address, data length or end address information, the rewriting order of multiple files and corresponding file rewriting data are packaged into and held At least one NDEF carried compared with small data quantity instructs record, and is sent by the NFC antenna of NFC reader by electromagnetic field to NFC Label；
Step 705 '：The NFC antenna demodulation electromagnetic field of NFC label obtains at least one NDEF instructions and records and give The data management system of NFC label；
Step 706 '：The data management system of NFC label parses and obtains what the application program of NFC reader to be rewritten Sequentially and accordingly file rewrites data for initial address, data length or the end address information of file, rewriting, directly by suitable Sequence rewrites the file of the data field of non-volatile memory cells, and regenerates new filename, file type, file identification The index informations such as initial address, data length or the end address of code, document order code and file, by the new index information Write to data head.
Optionally, step 704 ', 706 ' can also be performed with following steps：
Step 704 "：The filename of multiple files of the application program foundation NFC label of the NFC reader, file type Or document identifier code, document order code are directly specified or according to the selected determination file to be rewritten of the user to the file to be rewritten Filename or file type and multiple files rewriting order, and according to initial address, the data of each file to be rewritten Length or end address information generate the starting of new filename, file type, document identifier code, document order code and file The index informations such as address, data length or end address, the file for each file that the NFC generators of NFC reader will be rewritten Name or file type, initial address, data length or end address information, the rewriting order of multiple files, corresponding file weight Write data and corresponding new index information is packaged at least one NDEF instruction of the carrying compared with small data quantity and recorded, and by The NFC antenna of NFC reader is sent to NFC label by electromagnetic field；
Step 706 "：The data management system of NFC label parses and obtains what the application program of NFC reader to be rewritten Filename or file type, initial address, data length or end address information, rewriting order and corresponding file rewrite number According to directly the file of the data field of non-volatile memory cells being rewritten in order, and the new index information is write to number According to head.
Optionally, the application program of NFC reader is sending the filename to be rewritten or file type, or, to rewrite The initial address of file, data length or during end address information, will can also accordingly be set as at least one file The write-in type re-write is sent to NFC label.
Optionally, NFC reader needs the data field first address directly from the non-volatile memory cells of NFC label to cover When file writes new data, the directory area of NFC label or the information of data head can not also be obtained, but directly marked to NFC Sign and issue and send new data, or new data and new index information.
Under normal circumstances, write again when the non-volatile memory cells of NFC label can first be wiped using FLASH etc. by page Memory device when, the data for wiping whole page are still needed when only rewriting some, that is, can be to the data of other storage address Impact, the even rewriting to some address dates is also required to re-write the data of other addresses, so that, even only Overwritten parts data, it is also desirable to which data are re-write using the file data rewrite method described in the present embodiment.
The NFC reader and the data rewrite method of NFC label provided based on the present embodiment, NFC reader can be direct Filename, file type or the file address to be rewritten and new index information are specified, so as to straight at NFC reader end Connecing rewrite operation of the control to NFC label, there is provided more flexible NFC label file data writing mechanism.
Although it should be noted that the embodiment of the present invention states the skill of the present invention using NFC label in an optimal manner Art thinking, NFC label provided by the present invention is also not limited in portable nfc card piece, and NFC label can also be with attachment Or integrated mode forms the NFC memory units with fixing equipment or large scale equipment, being such as attached on exhibition platform, is attached to electricity NFC on refrigerator or Self-help vending machine reads part, the NFC posters of Pasting to wall, likewise, NFC label can also be with Other shapes or structure are packed, and the NFC being such as machined in collar differentiates label, are attached to the NFC checkings in wine product Part, all should as long as applying relatively large data storage provided by the present invention, reading and wiring method in NFC memory units When the scope for belonging to the present invention.
Although it should be noted that generally can just capture NFC label work by the electromagnetic field of NFC communication in NFC label Electric energy needed for making, optionally, can also be to NFC label attached battery or other equipment powered, for supplying electricity to NFC marks The work of the data management system of label, it does not influence the realization of the technology of the present invention thinking equally.
Obviously, the technical scheme provided using the embodiment of the present invention, sets data management system in NFC label, leads to Cross the encapsulation that data management system reads multiple NDEF record or performs the NDEF records of relatively large data, and by multiple NDEF Non-volatile memory cells are write direct in record parsing, realize the storage and transmission of relatively large data, also, non-volatile Data head is set in memory cell, performed targetedly or partial document number by the index information of each file in data head According to reading or rewriting, rewriting, and, NFC label is read and write by the application program at NFC reader end, realized more flexible The reading and write operation of data in NFC label.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims (19)

1. a kind of NFC label, including：
NFC antenna, the transmitting-receiving that the NDEF records of the data compared with small data quantity are carried by demodulation or modulated electromagnetic field communicates；
Non-volatile memory cells, store the data of larger data amount, and the data of the larger data amount include multiple files；
Data management system, including data read-out unit, NDEF message encapsulation unit and NDEF message sending units,
The data that the data read-out unit is used for the larger data amount for being stored the non-volatile memory cells are read Go out,
The NDEF message encapsulation unit is used to the data of the larger data amount being packaged into multiple carryings compared with small data The NDEF records of the data of amount,
The NDEF that the NDEF message sending units are used for by the multiple carrying compared with the data of small data quantity is recorded by described NFC antenna modulated electromagnetic is sent,
Wherein, the non-volatile memory cells include：
Data field, stores multiple files of the data of the larger data amount in order；
Data head, describes the initial address of each file of the data field；
Directory area, describes the total data length of the data head and the total data length of the data field.
2. NFC label as claimed in claim 1, it is characterised in that：
In the storage address of the non-volatile memory cells, the data head is stored in before the data field, the mesh Record area is stored in before the data head.
3. NFC label as claimed in claim 1, it is characterised in that：
The total data length information of the data head of the directory area is arranged at the original position of the data head,
The total data length information of the data field of the directory area is arranged at the original position of the data field.
4. NFC label as claimed in claim 1, it is characterised in that：
The data head also describes the data length of each file of the data field.
5. NFC label as claimed in claim 1, it is characterised in that：
The data head also describes the end address of each file of the data field.
6. NFC label as claimed in claim 1, it is characterised in that：
The data head also describes filename, file type or the identification code of the file, more than sequence code at least one letter Breath,
The identification code is used for the type for marking the file,
The sequence code is used for the reading order for marking the file.
7. NFC label as claimed in claim 1, it is characterised in that：
The directory area also describes the number of the file of the data field, the date of formation of file, the rewriting day of file More than phase, the title of the NFC label, type, function, date of manufacture and corresponding identification code or check code at least one letter Breath.
8. NFC label as claimed in claim 7, it is characterised in that：
The type of the NFC label is used for the application strategy for determining the file of the NFC label.
9. the NFC label as described in claim any one of 1-8, it is characterised in that：
The carrying is recorded as to be recorded by the stable NDEF sent of NFC antenna compared with the NDEF of the data of small data quantity.
10. the NFC label as described in claim any one of 1-8, it is characterised in that：
The data volume of the data of the larger data amount, which has exceeded, to be recorded by the stable single NDEF sent of NFC antenna Payload can carry the data volume of data.
11. a kind of method for reading data of NFC label,
The NFC label includes NFC antenna, data management system and non-volatile memory cells, the non-volatile memories list Member includes directory area, data head and data field, and the data field stores the data of larger data amount, the larger data amount Data include multiple files, and the data head describes the initial address of each file of the data field, the catalogue Area describes the total data length of the data head and the total data length of the data field, and the NFC label name Title, type, more than function at least one information,
The method for reading data includes：
The data management system loads the directory area and the data head of the non-volatile memory cells, obtains described At least one index information described by directory area and the data head,
And the reading order for multiple files that the data field is stored is determined according at least one index information；
The data management system indexes the initial address of the multiple file according to the reading order of multiple files, by institute Reading order is stated to read the file from the data field of the non-volatile memory cells；
NDEF of the data management system by the Document encapsulation of reading for multiple carryings compared with the data of small data quantity is recorded Group, and sent by the NFC antenna modulated electromagnetic.
12. method for reading data as claimed in claim 11, it is characterised in that：
The data management system obtains the type of the NFC label, and determines the data according to the type of the NFC label The reading order for multiple files that area is stored.
13. method for reading data as claimed in claim 11, it is characterised in that：
The data head also describes filename, file type or the identification code of the file, more than sequence code at least one letter Breath, the identification code is used for the type for marking the file, and the sequence code is used for the reading order for marking the file,
The data management system determines the reading order of multiple files according to the sequence code.
14. method for reading data as claimed in claim 11, it is characterised in that：
The multiple file that the data management system is stored according to the non-volatile memory cells sequentially reads institute File is stated, and is encapsulated as NDEF record group of multiple carryings compared with the data of small data quantity.
15. method for reading data as claimed in claim 11, it is characterised in that：
The data management system reads a file from the non-volatile memory cells and is encapsulated as multiple carryings compared with decimal After NDEF records according to the data of amount, then read next file.
16. the method for reading data as described in claim any one of 11-15, it is characterised in that：
Each Document encapsulation is the NDEF records that the data compared with small data quantity are carried described in one group, carries smaller described in one group The NDEF records of the data of data volume include NDEF record of at least one described carrying compared with the data of small data quantity.
17. a kind of method for writing data of NFC label,
The NFC label includes NFC antenna, data management system and non-volatile memory cells, the non-volatile memories list Member includes directory area, data head and data field, and the data field stores the data of larger data amount, the larger data amount Data include multiple files, and the data head describes the initial address of each file of the data field, and described More than filename, file type or the document identifier code of file at least one information, the directory area describes the data head Total data length and the data field total data length, and the title of the NFC label, type, function are with up to A kind of few information,
The method for writing data includes：
The data management system loads the directory area and the data head of the non-volatile memory cells, obtains described The initial address of at least one index information and the file described by directory area and the data head；
The NFC antenna receives NDEF message；
The data management system parses the NDEF message and extracts the data in payload, according to included by the data At least one write-in file and write-in type, confirm said write type at least one file independent rewriting still at least One file re-writes；
If said write type is the independent rewriting of at least one file, the data management system is according to the data field The initial address of the file performs the rewriting of at least one file, and retains the initial address of the file；
If said write type re-writes at least one file, the data management system is according to the data field The initial address of the file performs re-writing at least one file, and regenerates new index information, by institute New index information is stated to write to the data head.
18. method for writing data as claimed in claim 17, it is characterised in that：
The data management system is related to the change of at least one index information according at least one described write-in file, will Said write type is defined as re-writing at least one file.
19. method for writing data as claimed in claim 17, it is characterised in that：
In filename, file type or the document identifier code of at least one write-in file described in the data management system at least A kind of information determines said write type.
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