CN105095941A - RFID label with port-dependent functionality - Google Patents

Abstract

Provided is an IC used for an RFID label, comprising at least two antenna ports to couple with at least two antennas. The IC can be configured to be capable of determining a port from which an incoming signal is received, and provide a first function if the incoming signal is received from a first port and a second function if the incoming signal is received from a second port. The IC can be configured to determine and/or provide a function based on a receiving port.

Description

There is the RFID label tag that port relies on function

Background technology

Radio frequency identification (RFID) system generally includes RFID reader and RFID label tag, and RFID reader is also referred to as RFID read/write device or RFID interrogator.Rfid system can be used to stock, location, identifies, qualification, configuration, starts/forbidding, and attachment or be embedded with the watch-dog of article of this label.Rfid system may be applied to article inventory and the tracking of retail trade; Be applied to article configuration and the monitoring of consumer and industry-electron trade; Be applied to safety-protection system to prevent the loss of article and stolen; Be applied to Application in Anti-counterfeiting to ensure the reliability of article; And other all application.

By being used less radio-frequency (RF) signal by a RFID reader, rfid system inquires that one or more label operates.This RF ripple is generally electromagnetic signal, at least at far-end field.This RF signal still can by significant electrification or magnetization in near-end field.This RF signal can compile one or more commands direct label and make one or more action.

A label can respond response RF signal (response) when sensing demodulation RF signal.This RF signal may be produced by label, or also may be called as in backscattered process at one and formed by tag reflection part demodulation RF signal.Backscattering may occur in many ways.

This reader receives, demodulation, and decipher response.This may be comprised the data be stored in label by the response of decipher, such as number, price, the date, the time, destination, enciphered message, electronic signature, other attributes, the combination in any of attribute, or other supporting data.This also may be comprised the decipher status information of label by the response of decipher, the article accompanying by label, or the article such as tag state information embedded by label, item status information, configuration data, or other status information.

RFID label tag generally includes an antenna and a RFID integrated circuit (IC), and this integrated circuit comprises a radio part, a power management section, and generally includes a logical gate or a storer, or both have concurrently.In some RFID integrated circuit, this logical gate comprises cryptographic algorithm, and this cryptographic algorithm may depend on and be stored in one or more password in tag ram or key.Power management section in early stage RFID integrated circuit uses an energy storage device such as battery usually.RFID label tag with an energy storage device is called as battery assisted tag, half active tag, or active tag.The development of semiconductor technology facilitates the microminiaturization of integrated circuit electronic, thus is only abutted against the RF signal received and just can provides power for a RFID label tag.This RFID label tag does not comprise a long-time energy storage device and is called as passive label.Certainly, even if passive label also generally includes temporary energy memory device and data/labelling storage, such as capacitor or inductor.

Summary of the invention

Content of the present invention introduce in simplified form through select concept, its below illustrate part be further described.Content of the present invention is also not inclined to the key technical feature or essential features of determining inventive point required for protection, is also not inclined to the protection domain helping to determine inventive point required for protection.

As mentioned above, rfid system has the RF signal of information to run by exchanging coding.Rfid system can be configured to, in different frequency ranges (as above quoted from U.S.Pat.Appl.Ser.No.13/196,877), in different distances, according to different agreements, and run in different application.In some cases, it may be applicable to having and singlely within the scope of multi-frequency, can use various protocols, in multiple distance, and/or in the RFID label tag that multiple application runs.In addition, it can be suitable for a label, and the signal that wherein this label can receive based on it has different performances.Such as, it may be suitable for a kind of label, its can based on the first frequency scope that is in received or first distance in signal and show one first behavior (using first code perhaps can one first function as response), and can show based on the second frequency scope that is in received or the signal in second distance one second behavior (using second code perhaps can one second function as response).Which kind of signal this kind of label can only run or no matter receive than being configured within the scope of single-frequency all has the label of similar behavior more general.But, a lot of RFID integrated circuit is electrically coupled to single antenna, and because antenna is running higher than predetermined frequency or distance range usually, being coupled in single integrated circuit with root antenna may not rightly within the scope of multi-frequency, and multiple distance is interior or sometimes even can not run according to different agreement.

Embodiment describes the integrated circuit for RFID label tag herein, and includes the RFID label tag of this kind of integrated circuit, and wherein these integrated circuit are designed to be coupled to many antennas with being energized, each via an antenna port.Each antenna port may with other antenna port phase electric isolution, and this integrated circuit can receive the specific antenna port of RF signal based on it and have different manifestations.

Specific embodiment for the integrated circuit for RFID label tag, and comprises the RFID label tag of this kind of integrated circuit, and wherein this integrated circuit comprises at least two for being connected to the antenna port of at least two antennas, and antenna port is mutual electric isolution alternatively.This integrated circuit is configured to determine antenna port, and wherein by this port, this integrated circuit receives input from this antenna port, and when receiving input from first day line cap, first function is provided, and when receiving input from the second antenna port, provides the second function.

Followingly illustrate by reading and browse relevant drawings, these and other technical characteristic and advantage will be apparent.Be understandable that, the general introduction of aforementioned entirety and ensuing detailed description only for explaining, do not form the restriction to claimed scope.

Embodiment

In following detailed description, quote and made with reference to the accompanying drawings, wherein this accompanying drawing forms a part herein, and the mode quoted by describing embodiment or example is shown.These embodiments or example can be grouped together, and other side may be utilized, and under the prerequisite of the invention spirit and scope without prejudice to this exposure, can make structural change.Therefore, following detailed description should not be considered restriction, and scope of the present invention is defined by appended claim and being equal to.

Fig. 1 is the block diagram of an exemplary RFID system 100, in conjunction with the embodiments.A RFID reader 110 transmits an inquiry radiofrequency signal 112.RFID label tag 120 near RFID reader 110 senses inquiry radiofrequency signal 112 and generates corresponding signal 126 as response.RFID reader 110 is responded to and decipher signal 126.Signal 112 and signal 116 may comprise rf wave and/or non-propagating radiofrequency signal (such as near field reaction signal (reactivenear-fieldsignals)).

Reader 110 and label 120 are by signal 112 and 126 communication.When communicating with one another, a side compiles respectively, and modulate and transmit data to the opposing party, the opposing party receives simultaneously, and demodulation decipher come from the data of the opposing party.These data can be modulated on RF waveform, and from demodulation RF waveform.This RF waveform usually in suitable frequency range, such as 900 megahertzes, RF ripple near 13.56 megahertzes etc.

Communication between reader and label uses symbol, is also referred to as RFID symbol.A symbol can be one and define symbol, calibration value etc.When needs, symbol can be used to conversion binary data, such as " 0 " and " 1 ".When symbol is processed by reader 110 and label 120, it can be treated to numerical value, numeral etc.

Label 120 can be a passive label, or an active or battery assisted tag (namely having the label of oneself power source).When label 120 is passive label, it provides power by signal 112.

Fig. 2 is the schematic diagram of a RFID label tag 220, and this label can play the effect of label 120 in Fig. 1.Label 220 is passive labels, means that it does not have the power source of oneself.A lot of descriptions in presents can be applied to initiatively and battery assisted tag equally.

Label 220 usually (be not must) is formed on a substantive plane inlay 222, as the art known, the generation type of this label 220 has multiple.Label 220 comprises a loop, and this loop is preferably embodied as an integrated circuit 224.In certain embodiments, integrated circuit 224 is used in complementary metal oxide semiconductor (CMOS) (CMOS) technology.In other embodiments, integrated circuit may be used in such as bipolarity junction transistors pipe (BJT) technology, metal-semiconductor field effect transistor (MESFET) and other other technologies known by those skilled in the art of the present technique.Integrated circuit 224 is placed in inlay 222.

Label 220 also comprises an antenna to exchange wireless signal with its environment.This antenna is generally flat and is attached on inlay 222.Integrated circuit 224 can be coupled to this antenna with being energized by suitable sky linear contact lay (display is not in fig. 2).

Shown integrated circuit 224 has an antenna port, and it comprises the sky linear contact lay that two can be coupled to two antenna segment 227 with being energized, and wherein these two antenna segment 227 are at this display formation dipole.Other embodiments many may use the port of any amount, contact, antenna, and/or antenna segment.

In operation, antenna receives a signal and this signal is transmitted to integrated circuit 224, and if appropriate, based on input signal and IC interior state, both all can obtain energy and respond.If integrated circuit 224 uses backscattered modulation, then can respond with the form of modulating antenna-reflected ratio, thus produce response signal 126 from the signal 112 of reader transmission.Can couple mutually with being energized and disconnect the reflectance that the sky linear contact lay coupling integrated circuit 224 can modulate antenna, also can change entering of the parallel circuit elements being coupled to day linear contact lay.The impedance changing series circuit element is another device of modulation antenna-reflected ratio.

Embodiment shown in Fig. 2, antenna segment 227 and integrated circuit 224 are separated.In other examples, antenna segment may be formed on integrated circuit 224.Label antenna in embodiment may be any form and be not limited to dipole.Such as, label antenna may be one piece of fragment, a slit, a coil, loudspeaker, a spiral or other suitable antennas.By various modes communication between each assembly of the rfid system in Fig. 1.A kind of such pattern is called as full duplex (fullduplex).Another kind of such pattern is called as half-duplex (half-duplex), and is described as follows.

Fig. 3 is a conceptual illustration 300, and for the half duplex communication in key drawing 1 between each assembly of rfid system, in this case, with label 120, wherein this label 120 is used as passive label 220 in fig. 2.This explanation is made according to time shaft, and uses anthropomorphic form " to say " and " listening ".The actual techniques now specifically describing " saying " and " listening " is implemented.

RFID reader 110 and RFID label tag 120 are mediated a settlement to the other side in turn and are listened the other side's (how saying).As shown in time shaft, when reader 110 pairs of labels 120 are said, this interchange is called as " R T ", and when label 120 pairs of readers 110 are said, this interchange is called as " T R ".Along time shaft, during the example that R T exchanges occurs in the time interval 312, during the example that an ensuing T R exchanges occurs in the time interval 326.Certainly, the duration at the time interval 312 and the interval 326 usual duration herein do not shown with – is similar to the use being identical only explanation.

According to block 332 and 336, RFID reader 110 is said during the time interval 312, and listens during the time interval 326.According to block 342 and 346, RFID label tag 120 (during time interval 312) when reader 110 is said is listened, and when reader 110 tins (during the time interval 326) say.

According to agenda, as described below during the time interval 312, reader 110 pairs of labels 120 are said.According to block 352, reader 110 transmission signal 112, it is described in Fig. 1 first.Meanwhile, according to block 362, label 120 Received signal strength 112 also processes it to obtain data etc.Meanwhile, according to block 372, label 120 does not form backscattering with its antenna, and according to block 382, reader 110 does not have Signal reception from label 120.

During the time interval 326, as described below, label 120 pairs of readers 110 are said.According to block 356, reader 110 transmits a continuous wave (CW) signal, and it can be regarded as the carrier that does not have coded message usually.This CW signal is used to transmit energy to be needed for himself electric power to label 120, simultaneously also by the carrier that can be undertaken modulating by backscattering as a label 120.In fact, during interval 326, according to block 366, label 120 do not have receive for the treatment of signal.Replace, according to block 376, the CW penetrated according to block 356 modulated by label 120, thus produces back-scattered signal 126.Meanwhile, according to block 386, reader 110 receives back-scattered signal 126 and processes it.

Fig. 4 is a block diagram, illustrates the details of a RFID integrated circuit, the integrated circuit 224 in such as Fig. 2.Circuit 424 in Fig. 4 may be formed in the integrated circuit of RFID label tag, the label 220 in such as Fig. 2.Circuit 424 has some to have described critical piece within this document.From diagram and description, known circuit 424 can have some optional features, or different parts, and this depends on concrete performance.

Circuit 424 shows two sky linear contact lay 432,433, and it is suitable for being coupled to antenna segment, the antenna segment 227 of the RFID label tag 220 in such as Fig. 2.When two sky linear contact lay formation signal inputs or signal are back to antenna, they are usually taken as an antenna port and are related to.It linear contact lay 432,433 can be made by the mode that other are applicable to, as sheet metal, etc.In certain embodiments, circuit 424 uses more than two sky linear contact lay, particularly when label 220 has more than one antenna port and/or more than one antenna.

Circuit 424 also comprises signal path part 435, and this path sections 435 may comprise signal wire, a Signal reception/transmission switch that can arrange signal path selectively, etc.

Circuit 424 also comprises a rectifier (rectifier) and PMU (PowerManagementUnit, power management unit) 441, this PMU obtain from the RF signal received by antenna 227 energy with reader to label (R T) and/or label to one of reader (T R) or during both for the circuit of integrated circuit 424 provides electric power.Rectifier and PMU441 can any mode known in the art realize.

Circuit 424 also comprises the RF signal that a detuner 442 is received by sky linear contact lay 432,433 with demodulation.Detuner 442 can any mode known in the art realize, and such as comprises a limiter, an amplifier, etc.

Circuit 424 comprises a processing block 444 further, and wherein the reception of this processing block 444 comes from the output of detuner 442 and performs such as command decode, stores and waits operation alternately.In addition, processing block 444 may produce an output signal for transmitting.Processing block 444 may realize in any mode known in the art, as by the combination of one or more processor, storer, demoder, scrambler, etc.

Circuit 424 also comprises the output signal that a modulator (modulator) 446 is produced by processing block 444 with modulation /demodulation in addition.The signal of this modulation is transmitted by driven antenna contact (antennacontacts) 432,433, and therefore drives and drive by one or more coupled antenna fragment the load provided.Term used herein " electric coupling (electricallycoupled also has translations to couple with being energized) " can represent that one is directly electrically connected, or represents a connection comprising one or more intervention electricity Lu Kuai Yuan Jian equipment." electricity " in term used herein " electric coupling " word refer in this document one or more ohm/electric current, electric capacity, and/or the coupling of inductance.Modulator 446 may realize in any mode that art is known, such as comprises a switch, driver, amplifier etc.

In a specific embodiment, detuner 442 and modulator 446 can be combined in a single transceiver circuit.In another specific embodiment, modulator 446 can use backscattered modulation signal.In another specific embodiment, modulator 446 can comprise an initiatively forwarder.In other specific embodiment, detuner 442 and modulator 446 can be a part for processing block 444.

Circuit 424 also comprises a storer 450 in addition to store data 452.Preferably being embodied as at least partially of storer 450 non-volatilely recalls storer (NVM), even if this means that data 452 also can be retained when circuit 424 does not have electric time (this kind of situation often appears in passive RFID label tag)

In certain embodiments, particularly have in the specific embodiment of more than one antenna port at those, circuit 424 may comprise multiple detuner, rectifier, PMU, modulator, processing block, and/or storer.

When processing signals, circuit 424 has different operations during R T and during T R.Described different operating will be described below, and herein, circuit 424 represents an integrated circuit of RFID label tag

Fig. 5 A illustrates the 524-A version of the parts of circuit 424 in Fig. 4, and it is by the signal operation improving further to emphasize in Fig. 3 during the time interval 312 period R T.The RF signal that detuner 442 demodulation receives from sky linear contact lay 432,433.This demodulated signal with C_IN for the treatment of block 444.Wherein in a specific embodiment, C_IN can comprise the symbol of a succession of reception.

524-A version Relative Fuzzy illustrate those inoperative parts of processing signals during R T.Rectifier and PMU441 can be active, such as transforming RF power.Modulator 446 is usual not transmission signal during R T, and usually do not occur to interact significantly with the RF signal received, also because switch 435 parts in Fig. 4, modulator 446 is coupled with RF signal solution, or because by design modulator 446 to have a suitable impedance, etc.

Although modulator 446 is inertia during a R T usually, it is not necessarily.Such as, during a R T, modulator 446 can adjust the use of the operation after himself parameter is thought, etc.

Fig. 5 B illustrates the 524-B version of the parts of circuit 424 in Fig. 4, improves to emphasize the signal operation in during period one in the time interval 326 T R of Fig. 3 further.Processing block 444 exports a signal C_OUT.In a specific embodiment, C_OUT may comprise a series of symbol for transmitting.Then modulator 446 is modulated C_OUT and is provided it to the fragment 227 of antenna segment such as RFID label tag 220 by sky linear contact lay 432,433.

524-B version Relative Fuzzy illustrate those inoperative parts of processing signals during T R.Rectifier and PMU441 can be initiatively, such as transforming RF power.Detuner 442 is usual not Received signal strength during T R, and the interaction be not usually of practical significance with the RF signal transmitted, because the switching action of 435 parts in the diagram makes (switchingaction) modulator 446 and RF signal decoupling (eitherbecauseswitchingactioninsection435ofFIG.4decouples demodulator442fromtheRFsignal), or because by design detuner 442 to have a suitable impedance (designingdemodulator442tohaveasuitableimpedance), etc..

Although detuner 442 is inertia during a T R usually, it is not necessarily.Such as, during a T R, detuner 442 can adjust the use of the operation after himself parameter is thought, etc.

In typical specific embodiment, detuner 442 and modulator 446 are exercisable to be in harmonious proportion modulation signal according to an agreement solution, the 1.2.0 version (Gen2 instructions) for the one-level two generation ultrahigh frequency RFID agreement in 860MHz – 960MHz communication such as provided by Universal Product electronic code center (EPCglobal), it is all incorporated to herein in the mode that entirety is quoted.In certain embodiments, circuit 424 comprises multiple detuner and/or modulator, and each being configured to supports different agreements or combination of protocols.A protocol specification, to a certain extent, symbolic coding, may comprise a series of modulation, ratio, time controling, or other any parameters relevant with data communication.

Some rfid systems can be configured to run, and in some cases, allow or stop to run based on the distance between label and reader.Such as, one for indicating the rfid system of the article of RFID usually in remote running in warehouse of making an inventory.In these cases, needs have and the RFID label tag of far field antenna phase configuration and reader, thus ensure to use relatively long-range RF signal to be effectively coupled.Fig. 6 A describes a rfid system 600, and this system has a RFID integrated circuit 602 and is coupled in a far field antenna 608, thus detects and respond the remote signal 606 transmitted by reader 604.

Some other rfid systems can be configured to closely running.The transaction of secret or sensitivity may need short-range interactions, such as when transmitting security information or financial transaction (such as wireless payment) in order to safety.Short-range interactions can be used only to allow operation, such as enters in the entrance (entrypoint) of safety, to neighbouring label.In these cases, need that there is the RFID label tag and reader that are configured with near field antenna, thus ensure the efficient coupling with relative short range RF ripple and/or non-propagating RF signal.Fig. 6 B describes a rfid system 650, and this system has a RFID integrated circuit 652 and is coupled in a near field antenna 658, thus the short range signal 656 that detection and response are transmitted by reader 654.

In certain embodiments, need that there is single label or the label integrated circuit that can detect and respond far field and near-field communication.But single port integrated circuit (such as shown in Fig. 6 A-B) is connected to an only antenna usually, and the antenna being configured to run in far field well may not be coupled (vice versa) with near-field signals.Certainly; (construct) one may be built and can respond the antenna that near-field signals can respond again far-field signal; but typical engineering science balance (typicalengineeringtradeoffs) can reduce antenna performance usually in some other manner; such as efficiency reduces; size is larger; cost is higher, and complexity is higher, etc.In addition, be configured to the single port antenna responding far field and near-field signals, when being coupled with a single port integrated circuit, distinguish that the signal received is far field or near field cannot to the simple approach of label integrated circuit one, limit or eliminate the ability that integrated circuit provides Range-dependent function (distance-dependentfunctionality).

Fig. 7 describes a rfid system 700, and this system configuration has a double-port integrated circuit 702 can respond near-field signals again can respond far-field signal.Integrated circuit 702 is configured to have two antenna ports 704 and 706, and an antenna port (704) is connected to a far field antenna 708, and another antenna port (706) is connected near field antenna 710.When reader 712 sends a far-field signal 716, integrated circuit 702 may be detected this signal and be responded by port 704 and antenna 708.When reader 714 sends a near-field signals 718, integrated circuit 702 may be detected this signal and be responded by port 706 and antenna 710.

In certain embodiments, integrated circuit 702 can be configured to detect and respond far field and near-field signals respectively.Such as, integrated circuit 702 may be able to be received by port 704 and far field antenna 708 and process a far-field signal, and almost receives and process a near-field signals by port 706 and near field antenna 710 at one time.Integrated circuit 702 also may make different responses based on the port of the Signal reception entered.Such as, integrated circuit 702 may provide one first function according to the signal received by port 704, and according to the second function that the signal received by port 706 provides to be different from the first function.

In order to support port dependence function, in certain embodiments, a RFID integrated circuit may have two or more antenna port that is different and/or electric isolution (electricallyisolated) each other each other.Fig. 8 has set forth such label 800, and it is named as " Double deference ", because it has double antenna port, each antenna port accepts a Differential Input.Described port is caused non-odd mode and another port to be substantially coupled (Theportsare " electricallyisolated " becauseanodd-modeexcitationononeportresultsinsubstantial lynoodd-modecouplingtotheotherport) by " electric isolution " because the odd mode of a port excites.Integrated circuit 800 comprises the sky linear contact lay 806 and 808 (comprising port one) being coupled in antenna 802, and is coupled in the sky linear contact lay 810 and 812 (comprising port one) of antenna 804.

All four sky linear contact lay (806,808,810 and 812) by capacitor 824,826,828 and 830 couplings (coupleto) are to rectifier, and neither one sky linear contact lay directly intercouples or is coupled in integrated circuit reference voltage 832.Although capacitor 824,826,828 and 830 is optional, they are different from the DC current potential of rectifier input current potential to promote the electric isolution between port by allowing sky linear contact lay to produce.When being coupled in antenna, if the load presented by antenna is in a basic balance, when being coupled to antenna, port keeps phase electric isolution, in this case, antenna 802 and 804 phase electric isolution, can float (floatelectrically) by other circuit electricity relative to each other and on integrated circuit, and can through (across) their generation different potentials.

The rectifier 816 and 820 rectification electromagnetic energy resulted from antenna thinks that tag circuit 814 provides power.Integrated circuit 800 also comprises modulator/demodulator 818 and 822, and they may be similar to the modulator 446 shown in Fig. 4 and detuner 442 separately.Tag circuit 814 is coupled in integrated circuit reference voltage 832 usually, conveniently, this reference voltage 832 is described as on " ground ", but it is not must have certain relation with earth surface, and in certain embodiments, it may be coupled in one or the other antenna port.

At integrated circuit 800, modulator/demodulator 818 is coupled in antenna 802 by port one, and modulator/demodulator 822 is coupled in antenna 804 by port 2.If antenna 802 and 804 is configured in different frequencies, different frequency ranges, or use different electromagnetic environments to run, this then relevant to each antenna modulator/demodulator may be configured or be optimized with in corresponding frequency in the same way, frequency range, or run under electromagnetic environment.In certain embodiments, be not each antenna-coupled in a different modulator and/or detuner, but multiple antenna-coupled is in a single modulator and/or detuner.In certain embodiments, these two antenna ports and circuit attached to it are configured to run simultaneously.

According to specific embodiment, label antenna may be taked any mode and be not limited to dipole antenna (dipoles).Such as, a label antenna may be a spot, groove, dipole, circle, volume, angle, spiral, or other any suitable antenna.In addition, according to specific embodiment, coupling condenser, if any, may be positioned on integrated circuit or outside integrated circuit, suitable capacitance may be had, and may be based on such as substrate (ubstrate) type, preparation method, antenna type, circuit performance, and other circuit and capacitor performance parameter are selected.

But, a Double deference RFID label tag integrated circuit is only only described in Fig. 8, other structure, (U.S. Patent Application Serial Number being filed on June 12nd, 2009 is 12/483 such as to include but not limited to those to be described in female case, 842, attorney docket is female case of 5088.0168USU1/IMPJ-0355 and to be filed in the U.S. Patent Application Serial Number on August 2nd, 2011 be 13/196,877, and attorney docket is female case of 5088.0168USI1/IMPJ-0416) in structure.Same, although example described herein only employs only a kind of dual-port RFID label tag integrated circuit structure, the label integrated circuit in other specific embodiments can have the port more than two to be used.

As mentioned above, in certain embodiments, the port that the signal correction that integrated circuit 800 can be configured to determine to enter with one joins and port dependence function is provided.As an example, circuit 814 in integrated circuit 800 can be configured to measure the RF electric power that receives at each port one and 2, and mutually measurement of comparison to RF power and/or contrast that a port and the signal correction received are joined with one or more threshold values (such as may be stored in tag ram).In certain embodiments, measured value and threshold values by first measuring the difference of the RF power received between two ports, then can compare by this contrast.In certain embodiments, configuration circuit 814 can be configured to make a port be better than (favor) another port.

Fig. 9 is a block diagram 900, illustrates the details of a dual-port RFID label tag integrated circuit.Block diagram 900 illustrates the processing block 944 that is similar to processing block 444 in Fig. 4; Be similar to the storer 950 (storage data 952) of storer 450 in Fig. 4; And optional external unit or a power source 972.In certain embodiments, process fast 944, storer 950 and/or external unit or power source 972 may be similar to the tag circuit 814 in Fig. 8.Processing block 944 is connected to the rectifier be associated with the first port by path 974, modulator, and/or detuner { arectifier, modulator, and/ordemodulatorassociatedwithafirstport, (such as, in Fig. 8, the modulator/demodulator 818 be associated with port one and/or rectifier 816) }, and the rectifier be associated with the second port is connected to by path 976, modulator, and/or detuner { arectifier, modulator, and/ordemodulatorassociatedwithasecondport, (such as, in Fig. 8, the modulator/demodulator 822 be associated with port 2 and/or rectifier 820) }.

As mentioned above, in certain embodiments, a multiport RFID integrated circuit can be configured to provide port dependence function.That is, integrated circuit process one enter or the approach of signal of going out may depend on the port receiving or send signal.Such as, processing block 944 may comprise first random digit (RN) generator (RNG) 960 and one the 2nd RNG962.Need a RN when receiving or send a signal by path 974 (to port one), processing block 944 can use a RNG960 to generate this RN.Same, need a RN when receiving or send a signal by path 976 (to port 2), processing block 944 can instead use the 2nd RNG962 to generate this RN.The mode possibility length that is different and/or its RN generated that this first and second RNG generates RN is different.; Such as, a RNG may generate relatively long RN, and the 2nd RNG may generate relatively short RN.If near field transaction has sensitivity characteristic (such as, relate to finance or secret information) and far field transaction is relatively insensitive, processing block 944 can use a RNG for the treatment of the transaction received from the Single port being connected to a near field antenna, and the 2nd RNG is for the treatment of the transaction received from the another port being connected to a far field antenna (transactions).

In certain embodiments, processing block 944 can use one first security bundle 964 and/or one first agreement 968 for the signal be associated with port one, and use one second security bundle 966 and/or one first agreement 970 are for the signal be associated with port 2.This first security bundle 964 can in cryptographic algorithm, key, session key, or other any parameters relevant to a security bundle are different from the second security bundle.This first agreement 968 may in its instruction, response, symbol, framework, data rate, or other any parameters relevant to communications protocol are different from second protocol 970.

In certain embodiments, the authority entering storer 950 (or data 952) and/or optional external equipment/power source 972 can be different according to port.Such as, a RFID integrated circuit may refuse the request of the read data 952 coming from a port, but authorizes the same request coming from another port.In certain embodiments, the part entering storer 950 (or data 952) may be restricted (or mandate).Such as, one RFID integrated circuit may respond the request of the read data 952 coming from a port with some data 952 of a reader, but it may respond and come from another request with the read data 952 of the port of part or all data 952.Same, the processing block 944 of a RFID integrated circuit may refuse the request entering external unit/power source 972 coming from a port, but it may authorize the request coming from another port.

In certain embodiments, one RFID integrated circuit may be hosted by (be coupled in or a be embedded in) electron device, such as be coupled in a microprocessor or be embedded in a televisor, and a basis may be provided to enter the host equipment of RF signal port change function.Such as, a RFID integrated circuit is if at a near field antenna port accepts to a signal, and it can send this signal to one microprocessor received by certain route, if then can not send to this signal at a far field antenna port accepts.Another example is, a RFID integrated circuit is if then can give the authority that a reader enters a storer of a televisor, if this request received in a near field then can refuse this request at a far field antenna port accepts to the request of entering.Also have another example be, a RFID integrated circuit if then can configure the operating language of a televisor to a configuring request at a far field antenna port accepts, if a near field antenna port accepts to this request then can not configure.Certainly, request relies on far field or the selection near field, can exchange in these examples.Same, the selection of port can based on other parameters of the signal entered, such as signal frequency, agreement, intensity, coding, etc.

In certain embodiments, port dependence function (port-dependentfunctionality) is configured by one or more configuration numerical digit.Figure 10 A-E illustrates the mutual of reader and a RFID integrated circuit 1004, and according to specific embodiment, this RFID integrated circuit is configured with port dependence function.Although apparently can learn according to discussion before and can use any antenna configuration, in every secondary figure of figure A-E, shown RFID integrated circuit 1004 is connected to a far field antenna 1006 on a port, and another port is connected to a near field antenna 1008.Integrated circuit 1004 can be stored in or be supplied to the configuration numerical digit 1010 of integrated circuit 1004 by a reader, control port function.According to typical practice, if a configuration numerical digit has a numerical value " 1 ", the function controlled by this numerical digit is available, if this numerical value is " 0 ", this function is disabled.Certainly, any digit value can be used, comprise the physical parameter of more than one numerical digit or word or numerical value or instruction Single port function.In certain embodiments, whether a bit string can indicate Single port function can use, or selects from some different port configurations.

At Figure 10 A-E, each port has four configurations numerical digit (fourconfigurationbits) to control four kinds of functions.In other some specific embodiments, configuration numerical digit more or less may be used to control function more or less.

In the specific embodiment of Figure 10 A-E, " enabling " (" interface enabling ") numerical digit should judge whether a port is movable (active) and partially or completely opens or closes Single port." EPC " (" EPC " selects) numerical digit can determine that a label transmits a part of this electric product coding " EPC " or an EPC as the response to the request on this port received." encryption " (" encryption is enabled ") numerical digit can judge an entering signal on Single port whether, if activity, be allowed to enter storer and/or perform safety/private mark label function, a such as label checking, reader is verified, validation-cross, hash or authentication of message yardage are calculated or are confirmed, or other private marks operation known to described art.Finally, " interference " (" interference is enabled ") numerical digit can determine whether one related port transmits a undesired signal when data are transmitted in another port.Such function may be useful, such as, covers the data transmitted from unauthorized interrogator.

Each function may as asking the simple or as many performance that comprises as asking.Such as, about EPC numerical digit, one EPC digit value " 0 " may mean that the tag return of the EPC request received on port 1 for comprises one the one EPC, and an EPC digit value " 1 " may mean that this reply comprises the 2nd EPC that is different from an EPC.In certain embodiments, only may need a part of transmission one EPC, such as in order to the object of safety, in this case, one EPC digit value " 0 " may mean that the reply for an EPC request only comprises a part of an EPC, and a digit value " 1 " may mean that this reply comprises the major part of this EPC, or vice versa.In other some specific embodiments, select numerical digit can control and the function that other are encoded or identifier is relevant, a such as label identifier (TID), one stock keeping unit " SKU ", Universial Product Code (UPC), the Global Trading Identification code (SHTIN) of serializing, or other any suitable coding or identifiers.As for EPC numerical digit, one may mean for an encode request reply and comprise a part for one first coding or an only coding with the selection numerical digit of one first numerical value, and is chosen as with a second value most that the reply that may mean for this request comprises one second coding or a coding.

Figure 10 A describes a scheme 1000, wherein a reader 1002 transmits far-field signal 1012 to multiport RFID integrated circuit 1004, this multiport RFID integrated circuit 1004 and is connected to the far field antenna 1006 on port one and the near field antenna 1008 on port 2.Port one configuration numerical digit is set to " 1000 " and means that port one is activated (enabled), integrated circuit 1004 is using the response of transmission 1 the one EPC as the request on port one, private mark function on port one is disabled (disabled), and the interference on port one is disabled.If reader 1002 requires an EPC by far-field signal 1012 and label 1004 Received signal strength 1012 on port 1, then integrated circuit 1004 EPC replys.But if reader 1002 is attempted to enter storer or use far-field signal 1012 to perform a safety command, then this request be ignored or be refused to label 1004 can.When RFID label tag integrated circuit 1004 Urine scent, this configurable number place value in scheme 1000 needs to respond far-field signal can respond near-field signals again, but will limit a long-distance reader (use far-field signal) and enter storer or be stored in the ability of the security information on label integrated circuit.

Figure 10 B describes the scheme 1012 that is similar to scheme 1000 in Figure 10 A.But, in scheme 1020, port one configuration numerical digit is set to " 1110 " and means that port one is unavailable, the response that transmission 1 the 2nd EPC asks by integrated circuit 1004 on port one, private mark function (cryptographicfunctionality) is activated, therefore a long-distance reader (use far-field signal) can enter storer and/or perform safety command, and the interference on port one is activated.If reader 1002 asks an EPC by far-field signal 1012 and label integrated circuit 1004 receives signal 1012 at port one (being coupled in far field antenna 1006), then integrated circuit 1004 is replied with one the 2nd EPC, 2nd EPC is possible relative to an EPC (if wherein this EPC digit value is " 0 ", label can transmit) different, longer or more complete.

Figure 10 C describes a scheme 1040, and wherein label integrated circuit 1004 is configured to ignore far-field signal.In scheme 1040, the numerical digit of enabling of port one is set to " 0 ".If reader 1002 transmits a far-field signal 1012, label integrated circuit 1004 does not respond.In certain embodiments, himself can disconnect from far field antenna 1006 by label integrated circuit 1004, does not in fact have Received signal strength 1012 completely.In other specific embodiment, label integrated circuit 1004 may still be coupled in far field antenna 1006 but the data ignored or refuse entering signal 1012 or comprise within it.Such as, possible configuration label integrated circuit 1004 thus a rectifier be associated with port one are (such as, rectifier 816 in Fig. 8) still for exercisable to obtain power from entering signal 1012, but the detuner that is associated with port one (modulator/demodulator 818 in such as Fig. 8) is still for idle or be off, thus, stop information to be decoded from signal 1012.Alternatively, this detuner may keep the movable data entered of also decoding, but the also data that enter to ignore this of possible configuration label integrated circuit 1004.

Figure 10 D describes a scheme 1060, and wherein, a reader 1062 transmits near-field signals 1014 to a label integrated circuit 1004, and it is connected to the near field antenna 1008 on port 2.According to configuration numerical digit 1010, port 2 is activated (enabling numerical digit for " 1 "); Integrated circuit 1004 will respond the EPC request on Single port 2 with one the 2nd EPC (EPC numerical digit is " 1 "); The near-field signals that enters on port 2 may be allowed to enter safe storage and/or perform safety command (encryption numerical digit for " 1 "); And interference for unavailable (port one and 2 interference numerical digit be " 0 ").

Figure 10 E describes scheme 1080, and the interference function on a port of wherein label integrated circuit 1004 is activated.Scheme 1080 is similar to the scheme 1060 in Figure 10 D, and wherein collocating integrate circuit 1004 comes from the near-field signals 1014 of reader 1062 with response.But, be different from scheme 1060, in scheme 1080, label allocation integrated circuit 1004 is also to transmit the undesired signal 1018 (port one interference numerical digit is for " 1 ") when near field replys 1016 in delivery port 1 at the same time, thus covers the information comprised in reply 1016.In certain embodiments, this undesired signal and/or return signal may be far field, may be near field in certain embodiments, and may be the mixing in a far field and near field in certain embodiments.In certain embodiments, undesired signal 1018 may be or comprise a random signal, a noise signal, or other any signals being suitable for prevention one listener-in reception and/or decoding reply 1016.

As mentioned above, label integrated circuit can be configured to determine and the port that an entering signal is associated at the RF power of port accepts by such as measuring.In certain embodiments, a label may use measures RF power to determine this label, this label integrated circuit, and/or whether article are associated (such as, being attached to) with this impaired label.Such as, a label integrated circuit can measure the RF power difference between two ports, and this difference may depend on this label, its antenna, and/or some characteristics of impaired relative article.In certain embodiments, this label integrated circuit also (or instead) may measure the difference of the RF power that same port receives at different time with change detected.

Figure 11 A describes a scheme, and wherein label 1004 has two antennas 1006 and 1102 and is coupled in port one and 2 respectively.Label integrated circuit 1004 can use port one to be used for and reader 1002 communication, and port 2 can be used to detect damage or other difference in electromagnetic environment of antenna 1006 and 1102.In certain embodiments, label integrated circuit 1004 may use port 2 instead of port one for communication, or port and antenna may be used for communication but also detection damage simultaneously.When integrated circuit 1004 detects the entering signal 1012 coming from reader 1002, it can determine the difference of the signal power between port one and port 2, if difference is or is almost similar to a default difference (it can be prelisted in integrated circuit 1004 or be determined by additive method), integrated circuit 1004 may be replied in 1104 at it and be transmitted one first coding.On the other hand, if this difference is different from default difference, integrated circuit 1004 may be replied in 1104 at it and be transmitted one second coding.This difference in this coding may allow reader 1002 to determine label, integrated circuit or relative article whether damaged.In certain embodiments, port one and/or 2 may comprise or be coupled in a coil, paster, dielectric material, metal wire, conductor lines, and/or other any parts being suitable for damage detection.

Reader and/or label may also use RF difference power between two integrated circuit ports of label measuring to determine other information of the article accompanying by this label and/or label.Figure 11 B describes a scheme, wherein, slightly different near field antenna 1008 and 1122 is coupled in two ports of label integrated circuit 1004, and label integrated circuit 1004 can use difference power between two ports measuring to determine the dielectric properties of the article accompanying by it.Such as, this label may be attached to a container.If this container is empty, integrated circuit 1004 can measure a RF difference power between two-port, and if this container fills liquid, this integrated circuit 1004 measures different the 2nd RF difference power between two-port.

The reason of this difference is the dielectric properties that liquid changes tag environment, and because two antennas 1008 and 1122 are different, coated by dielectric may be different to the influence mode of each antenna, cause the conversion of the RF difference power measured.Therefore, the occupied state of container (such as, be empty or full, or the amount of liquid in container) determine by measuring RF difference power.In other specific embodiment, the change that possible configuration label integrated circuit 1004 causes due to other suitable environmental factors (such as, not only because liquid filling state) to detect dielectric properties.

In certain embodiments, tunable antenna 1008 and 1122 is to change frequency thus to allow a reader and/or a label to determine operating area.Such as, the zones of different in the world, the such as U.S. and European Union, RFID uses different frequencies.By a tuning antenna to us frequency, tuning another to European Union's frequency, this reader and/or this label are by measuring RF difference power between the antenna that receives to determine the region that label integrated circuit 1004 operates.More multi-band has the specific embodiment of the integrated circuit being tuned to different frequency or frequency range, be No.13/196 in the U.S. Patent Application Serial Number being filed on August 2nd, 2011, have description in the case of 877 (attorney docket is 5088.0168USI1/IMPJ-0416), this is incorporated into presents by the mode all quoted.

Although only describe four configuration numerical digits above, the more polygamy for controlling other port functions is put numerical digit and is also considered into presents.As an example, configuration numerical digit 1010 can comprise an agreement and select field to determine which kind of communications protocol Single port uses.As mentioned above, an agreement is specified, to a certain extent, and symbolic coding, modulation, ratio, timing, or other parameters.It can cheat appointment one scope usually, a frequency range (such as, ultrahigh frequency (UHF), high frequency (HF) or low frequency (LF)), or an application.In certain embodiments, possible configuration integrated circuit 1004 is to use a protocol on a port and use another protocol on another port.

As another example, configuration numerical digit 1010 may comprise a power and select numerical digit, and it sets a particular port and how to obtain power from a RF field.As mentioned above, passive RFID label tag obtains RF radiation on its antenna.In certain embodiments, a label integrated circuit can use a power to select numerical digit to configure a port for communication, and configures another port and do not carry out communication for obtaining power.Useful when this configuration comprises the RF signal of different frequency or type in the environment.Such as, one use the label of UHFRFID communication may comprise in the environment of other RF radiation (such as, WiFi or GSM/UMTS/LTE movable signal) one to operate.If this RFID label tag is configured with one of them port for obtaining power from other radiation, then this may can strengthen its operational range.

In certain embodiments, label and the reader with port dependence Functional Capability can promote tag processes.Such as, consider the situation shown in Figure 12, one of them RFID reader is positioned at a porch (anaccesspoint), from label, such as read or write doorway or the entrance (doorwayorentrance) of label.In the application comprising high label capacity or quick mobile tag, reader may have the sufficient time from a label read and/or write with label.In these cases, port dependence function can help reply one to have the far-field signal of a long code by (a) label allocation, reply the near-field signals that has short code, and/or (b) was helped before this label enters near field range by label allocation, perform the time-intensive task when this label is in far field.

Diagram 1200 in Figure 12 comprises RFID label tag 1202 and RFID reader 1204. label 1202 may be attached to article, itself and relating to persons, or uses in other modes known to affiliated field.Port dependence function supported by least some label 1202, and wherein this label integrated circuit can be coupled in a near field antenna by a port, is coupled in a far field antenna in another port.Same, reader 1204 is coupled near field antenna 1214 and a far field antenna 1206, and may be positioned at close with porch, thus it can use far-field signal and carry out communication with other (withother) by the label communication of this porch, more remote label does not use far-field signal to pass porch.In certain embodiments, reader 1204 can be configured to use far field antenna 1206 and near field antenna simultaneous communications, or be configured to by each by means of only an antenna communication.Some of them label 1202 (such as label 1208) potential range reader 1204 is relatively far away, and only by far-field signal and reader 1204 communication, and another part label 1202 (such as label 1216) potential range reader 1204 is relatively near, and by near-field signals and its communication.

First a label (such as, label 1208) not yet passing this porch may receive a far-field signal 1210 from reader 1204.Label 1208 can be based on, at least partly upper based on, the configuration numerical digit of one or more port for Received signal strength 1210 sends a reply 1212.As an example, label 1208 may be configured to based on reception one with the signal on the port of far field antenna, can reply one first identifier.Label 1208 also may (or instead) be configured to can calculated response to store this calculated response be the use of later fetching.

Then, label 1208 to be participated in one or more mutual with reader 1204 by this porch.As mentioned above, because scope restriction and label speed, such may be free restriction alternately, and therefore they must be fast.As for the label 1216 before label 1208, it by this porch, and receives a near-field signals 1218 from reader 1204 with the direction of motion expressed.Label 1216 based on signal 1218 and/or one or more configuration numerical digit related with the port of Received signal strength 1218, can be launched one and replys 1220.Label 1216 may be configured to can with a short identifier, an identifier be shortened, or replys this near-field signals using a response as the precomputation of far-field reader interaction results (interaction) formerly.

Because communication may be carried out (such as with label 1216 before reader 1204, when it is positioned at the present position of label 1208), reader 1204 may know the identifier of label 1216, and therefore only need it reply with a part for its identifier thus confirm the identifier of this label, or the dialogue before terminating with its precomputation response.In certain embodiments, reader 1204 may perform any network interaction consuming time (such as key is fetched) need after far field is mutual but before near field is talked with a label continuous dialogue.In certain embodiments, reader 1204 can use reply 1220 to carry out authenticating tag 1216.

But, label integrated circuit replys a long code using as the response to far-field signal, and reply a short code as the response to near-field signals, or based on the calculating that the initialization one of reception one far-field signal responds, and send this response based on reception one near-field signals, as as described in when above in the motion promoting label through a porch, such function is not limited thereto.Label may be configured to can under any application under any circumstance and needed for specific service condition, different with near-field signals response to far field.As another example, label may be configured to when responding far-field signal, the reciprocation part (tagsmaybeconfiguredtoperformportionsofacryptographically securedinteractioninresponsetofar-fieldsignals) being protected (cryptographicallysecured) by private mark can be realized, but only when responding near-field signals, transmit the data (buttransmitdataassociatedwiththeinteractiononlyinrespons etonear-fieldsignals) relevant with this reciprocation.

In certain embodiments, a label integrated circuit uses which port and reader communication according to this label, uses different passwords or secret key to perform a checking (label, reader, or validation-cross).

In certain embodiments, the reply of one label may comprise one or more port-indicator (port-indicator) numerical digit, and this port-indicator numerical digit shows that signal is received by this port and/or tag return (tagreply) is sent out (indicatetheportonwhichasignalwasreceivedand/orfromwhicht hetagreplywassent) from this port.Such as, if label receives a signal at port one and sends it on port 1 and replys, then this reply can comprise Single port-indicator numerical value for " 00 ", if and it receives a signal at port one and send its reply on port 2, then this reply can comprise Single port-indicator numerical value for " 01 ".In certain embodiments, a reader signal may comprise (near field or far field) numerical digit that shows signal type.

In certain embodiments, whether port-indicator numerical digit can indicate a signal appropriate or incorrect to a label or reader.Such as, that supposes to occur in the near-field readers signal sympathetic response in the far field antenna of label near is transmitted to other labels being positioned at far field, and these labels should not receive this signal or should not be in this signal of reception in far field.In this case, there is the tag return that this reader signal or comprises an indicator numerical digit, determine that whether this signal is appropriate or incorrect to allow this reader and/or a label.

Figure 13 is a process flow diagram, according to specific embodiment, describes one is determined function process 1300 based on an entering signal.Process 1300 may be performed by a label integrated circuit or a label as above-integrated circuit processing block.In step 1302, the RF signal that this enters, such as a READER COMMAND, received.In step 1304, the port be associated with this entering signal is determined.In certain embodiments, this port determines by measuring the RF power that receives on that port and the measured value on this measured value and another port and/or one or more threshold values being compared.

In step 1306, to be one or morely at least associated with this port, and to be selectively selected with the performance-relevant function of one or more entering signal and to be provided.This function may be by a security bundle, one random digit, one random number generator, one agreement, one frequency, one replys or its disappearance (lackthereof), and enable or disable Single port, one replys port, one indult (privilege), one memory access (memoryaccess), a data bit or word, a performance of the article that label depends on, a checking, one memory access of article appended by label, or any other is applied to RFID information process or communication, or to RFID information process or the useful function of communication.In optional step 1308, an action can be performed at entry port or other ports, as transmitted a undesired signal.

Specific embodiment also may comprise the method for manufacture label as herein described.These methods may with the pulling together of one or more manual operation person under jointly complete.Do not need collocation between these manual operation persons, and each operator can perform the part of this manufacture process with a machine.

The specific embodiment of manufacture one label as herein described may this method comprising program and run this program.A program is generally defined as a series of step or instruction of leading to an expected results, and this is the person's character due to element in these steps and order thereof.

The step of an execution program or instruction need the physical quantity controlling representative information.These physical quantitys may be electricity, magnetic, and the instruction of electromagnetism or particulate, state of matter, and the state of generally any physical component.These physical quantitys are transferred usually, in conjunction with, contrast, and by according to step or instruction process.When the information by these physical quantity status representative is used as numerical digit, data numerical digit, example, numerical value, symbol, characteristic, price is easily time digital or like this.But, need to keep firmly in mind, all these items and to be similarly all associated with suitable physical quantity, and these items are only independent or the note being applied to these physical quantitys in groups.

Perform the step of a program or instruction may need storage medium further, this storage medium by the instruction of program and/or data storing thereon, and usually in machine readable form.This storage medium is commonly referred to as storer, is read by a processor or other machines element.In electron device, this storer may by ROM (read-only memory) (ROM), and random access memory (RAM) and other modes known to art personnel many realize.In certain embodiments, this storer may be unstable, may be stable in other specific embodiments.

Although mentioning a program is stored in a storer, affiliated art can clearly know, this program does not need must be present in a single storer or be performed by a single machine.The multiple part of this program, module, data, or feature can be present in different storeies or be performed by different machines.

Usually, conveniently, need with software simulating or describe one according to the manufacturing course of the label of specific embodiment.This software can be and unified maybe can be taken as the multiple software module be associated.

One RFID label tag or manufacture the embodiment of a RFID label tag program described herein can with hardware, software, firmware, or its any combination is implemented.Assembly or the module of such a label being used as segmentation are useful.The personnel of art will recognize that these assemblies or a module part can by with hardware, and a part can by with software, and a part can by with firmware, and the mode that a part combines with it realizes.

Explanation above, example, and data are the formation of specific embodiment, manufacture and use to provide complete explanation.Although subject matter describes with the language for architectural characteristic and/or method action, be understandable that, above-mentioned concrete property or action might not be confined to by the theme defined in claim.In other words, above-mentioned concrete property and action are the examples realizing claim and specific embodiment.

Accompanying drawing explanation

Corresponding for cooperation accompanying drawing is illustrated by following detailed description part, wherein:

Fig. 1 is the block diagram of each parts of rfid system.

Fig. 2 is displaying passive RFID label tag, as being used to the schematic diagram of each parts of the passive RFID label tag of system shown in Figure 1.

Fig. 3 is one for the concept map of the half duplex communication pattern in key drawing 1 between each parts of rfid system.

Fig. 4 is a displaying one RFID label tag integrated circuit, the block diagram of the detailed structure of the integrated circuit in such as Fig. 2.

Fig. 5 A and 5B illustrates the communication signal path during label in Fig. 4 block diagram to reader and reader to label.

Fig. 6 A and 6B describes the rfid system with single port RFID label tag, and this rfid system is configured to respond far field and near-field signals respectively.

Fig. 7 describes the rfid system with dual-port RFID label tag, and wherein dual-port RFID label tag is configured to response far field and near-field signals.

The Double deference with electric isolution antenna port (dual-differential) the RFID label tag integrated circuit that what Fig. 8 illustrated is according to specific embodiment.

Fig. 9 is a block diagram, and wherein the display of this block diagram is have according to specific embodiment the detailed structure of RFID label tag integrated circuit that port relies on function (capableofport-dependentfunctionality).

Figure 10 A-E depicts reader according to specific embodiment and the reciprocation that has between RFID label tag integrated circuit that port relies on function.

Figure 11 A-B depicts another reader according to specific embodiment and the reciprocation that has between RFID label tag integrated circuit that port relies on function.

Figure 12 depicts one according to the reader of specific embodiment and the interactive example that has between label that port relies on the RFID label tag integrated circuit of function.

Figure 13 is a process flow diagram, wherein the flowchart depicts according to specific embodiment for determining the process based on input signal port function (functionalitybasedonanincomingsignalport).

Claims (23)

1. a radio frequency identification integrated circuit (IC), is characterized in that, comprising:

One first day line cap;

One second antenna port; With

One processing block, wherein said processing block is configured to:

Receive an input, wherein said input comes from one of them of described antenna port;

Determine that described input is received from antenna port described in which;

If described input receives from described first day line cap, then run with one the one IC function; With

If described input receives from described second antenna port, then the 2nd IC function being different from an IC function with is run.

2. IC according to claim 1, is characterized in that, described first day line cap and described second antenna port phase electric isolution.

3. IC according to claim 1, is characterized in that, described first day line cap is connected to a far field antenna and described second antenna port is connected to a near field antenna.

4. IC according to claim 1, is characterized in that, described processing block is configured to the power input that can receive based on, determines what described input was received from antenna port described in which.

5. IC according to claim 4, is characterized in that, determines what described input received from antenna port described in which, in comprising the steps at least one of them:

Compare first power received at described first day line cap and second power received at described second antenna port;

Determine a difference of described first power and described second power; With

By described first power, in described second power and described difference at least one of them compared with a threshold values.

6. IC according to claim 1, it is characterized in that, described processing block is configured to detect the attribute of article be associated with described IC further, and wherein said attribute is by inputting and following at least one of them detects of relatively receiving from described first port:

One input received from described first day line cap in advance,

One input received from described second antenna port, and

One threshold values.

7. IC according to claim 6, is characterized in that, described attribute be following at least one of them:

The dielectric properties of article, and

Whether described article are damaged.

8. IC according to claim 1, is characterized in that, the operation with a described IC function comprise following at least one of them:

One undesired signal is provided;

Receive RF electric energy

Use a first frequency with a reader communication;

Use one first agreement with described reader communication;

Use one first security bundle;

Perform a certification;

Use a first password;

Use one first secret key;

Use a randomizer;

Start antenna port described at least one;

Forbid antenna port described at least one;

There is provided one first random number to reader;

There is provided a first code and a second code one of them to reader;

Determine whether to reply described reader; With

Determine to use antenna port described in which to reply described reader.

9. IC according to claim 8, is characterized in that, the operation with a described IC function comprises further determines to use antenna port described in which based on one or more port indicator numerical digit.

10. IC according to claim 1, is characterized in that, described processing block is configured to based on described decision further, and amendment enters following at least one of them authority;

A part for IC storer;

Antenna port described at least one;

One inductor;

One external power supply;

One external power dissipator (powersink);

One external data, wherein said external data is connected with the processing block of article (connectionto), and wherein said article are associated with described IC;

A part for the storer of described article; With

One function of described article.

11. IC according to claim 1, it is characterized in that, comprise a storer further, at least one configuration numerical digit of wherein said memory storage, wherein said configuration numerical digit is formed to a few function, and wherein said function is relevant to antenna port described at least one.

12. IC according to claim 1, is characterized in that, described processing block is configured to further:

Receive one first READER COMMAND coming from described first day line cap;

Store the response for described first READER COMMAND; With

One second instruction coming from described second antenna port is replied with the response of described storage.

13. 1 kinds for the method for radio frequency identification integrated circuit (IC), is characterized in that, comprising:

Receive an input, wherein said input comes from one of them in a first day line cap and one second antenna port;

Determine that described input receives from antenna port described in which;

If described input receives from described first day line cap, then run by one the one IC function; With

If described input receives from described second antenna port, be then different from described IC function a 2nd IC function with one and run.

14. methods according to claim 13, is characterized in that, comprise the power input received based on further and determine described input from which antenna port receives.

15. methods according to claim 14, wherein determine described input be from antenna port described in which receive comprise the steps at least one of them:

Compare one first power received at described first day line cap and one second power received at described second antenna port;

Determine the difference between described first power and described second power; With

By described first power, described second power with in described difference at least one of them compared with a threshold values.

16. methods according to claim 13, is characterized in that, comprise further:

By compare an input received from described first port and following at least one of them, detection is associated with described IC a character of article:

One input, wherein said input is received from the first port of described first day,

One input, wherein said input is received from described second antenna port, and

One threshold values.

17. methods according to claim 16, wherein said character be following at least one of them:

One joint behavior of described article, and

Whether described article are damaged.

18. methods according to claim 13, is characterized in that, the operation with a described IC function comprise following at least one of them:

One undesired signal is provided;

Receive RF electric energy

Use a first frequency with a reader communication;

Use one first agreement with described reader communication;

Use a security bundle;

Perform a certification;

Use a first password;

Use one first secret key;

Use a randomizer;

Start antenna port described at least one;

Forbid antenna port described at least one;

There is provided one first random number to reader;

There is provided a first code and a second code one of them to reader;

Determine whether to reply described reader; With

Determine to use antenna port described in which to reply described reader.

19. methods according to claim 18, the operation wherein with a described IC function comprises further determines to use antenna port described in which based on one or more port indicator numerical digit.

20. methods according to claim 20, is characterized in that, comprise further, and based on described decision, amendment enters following at least one of them authority;

A part for IC storer;

Antenna port described at least one;

One inductor;

One external power supply;

One external power dissipator;

One is connected to and is connected with the processing block external data of described IC associated article;

A part for the storer of described article; With

One function of described article.

21. methods according to claim 13, is characterized in that, comprise further and store at least one configuration numerical digit, and wherein said configuration numerical digit is formed to a few function relevant to antenna port described at least one.

22. methods according to claim 13, is characterized in that, comprise further:

Receive one first READER COMMAND coming from described first day line cap;

Store the response for described first READER COMMAND; With

One second instruction coming from described second antenna port is replied with the response of described storage.

23. 1 kinds of less radio-frequency integrated circuit (IC), is characterized in that, comprising:

One first day line cap;

One electric isolution is in the second antenna port of described first day line cap; With

One processing block, it is configured to:

Receive the input coming from antenna port described in one of them;

Determine described input from which antenna port receives;

If described input receives from described first day line cap, then run by one the one IC function; With

If described input receives from described second antenna port, then the 2nd IC function being different from a described IC function with is run.