CN102117427B - Near field communication device - Google Patents
Near field communication device Download PDFInfo
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- CN102117427B CN102117427B CN 200910266842 CN200910266842A CN102117427B CN 102117427 B CN102117427 B CN 102117427B CN 200910266842 CN200910266842 CN 200910266842 CN 200910266842 A CN200910266842 A CN 200910266842A CN 102117427 B CN102117427 B CN 102117427B
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Abstract
The invention discloses a near field communication device, which comprises an antenna, a signal processing circuit, a storage device and a signal transmission interface, wherein the antenna is used for receiving a wireless signal of an external reader or transmitting the wireless signal to the external reader; the signal processing circuit is provided with a first connecting port, a second connecting port and a third connecting port; the first connecting port is coupled to the antenna; the storage device is coupled to the second connecting port and is used for storing data from the signal processing circuit; and the signal transmission interface is directly connected to the third connecting port and is used for mapping a specific storage area of an external signal and the storage device.
Description
Technical field
The invention relates to a near-field communication device, refer to a RFID tag of direct access one storage device especially.
Background technology
(Radio Frequency Identification, RFID) technology is the technology of a kind of automatic near field (Near Field) wireless identification and exchanges data to radio-frequency (RF) identification.One radio-frequency recognition system can include a RFID tag (Tag) and a calculating punch (Reader) usually; this RFID tag can produce a radiofrequency signal by the antenna of an in-building type and this calculating punch carries out communication; be sent to this calculating punch with the information that will be stored in this RFID tag, wherein this radiofrequency signal is a corresponding characteristic frequency.Under normal conditions, RFID tag is used to be used as price tag, call tag uses, and can't merge with other external circuit to use.Anticipate namely, RFID tag can not transfer to external circuit with received data, or receives the data of external circuit, transfers to calculating punch with wireless mode.In addition, under existing special application, RFID tag need be carried out communication with external circuit, and extra microcontroller (Micro-Control Unit need be arranged usually; MCU) communication of processing RFID tag and external circuit.But, using extra microcontroller except complexity and the cost that can significantly increase RFID tag and external circuit, the power supply that also needs to provide extra is to microcontroller.Therefore, how to reduce the complexity that data write or export between this RFID tag and external circuit, become the problem that industry is needed solution badly with the cost of manufacture that reduces whole radio-frequency recognition system effectively.
Summary of the invention
Therefore, a purpose of the present invention is to provide a RFID tag of direct its storage device of access, to solve the problem that existing RFID tag is faced.
Provide a kind of near-field communication device according to an aspect of of the present present invention.This near-field communication device includes an antenna, a signal processing circuit, a storage device and a signal transmission interface.This antenna is in order to receive from the wireless signal of an external reader (reader) or to send wireless signal to this external reader.This signal processing circuit has one first connectivity port, one second connectivity port and one the 3rd connectivity port, and wherein this first connectivity port is coupled to this antenna.This storage device is coupled to this second connectivity port, is used for storing the data from this signal processing circuit.This signal transmission interface is directly connected in the 3rd connectivity port, a particular memory region of be used for videoing an external signal and this storage device.
Provide a kind of near-field communication method according to another aspect of the present invention, be used for a wireless identification label device, this device comprises a storage device and a signal transmission interface.This near-field communication method includes reception from an external signal of this signal transmission interface; According to the external signal from this signal transmission interface, directly reflection is to a particular memory region of this storage device; And according to this stored particular data of this particular memory region, produce a wireless transmitted signals.
Description of drawings
Fig. 1 is an embodiment synoptic diagram of a kind of near-field communication device of the present invention.
Fig. 2 is one first embodiment synoptic diagram of a kind of RFID tag of the present invention.
Fig. 3 is one second embodiment synoptic diagram of a kind of RFID tag of the present invention.
Fig. 4 is an embodiment synoptic diagram of the present invention's one signal transmission interface.
Fig. 5 is an embodiment synoptic diagram of a kind of medicine loading attachment of the present invention.
Fig. 6 is an embodiment synoptic diagram of a kind of price display device of the present invention.
Embodiment
Please refer to Fig. 1.Shown in Figure 1 is according to a kind of near-field communication of the present invention (Near Field Communication, NFC) Zhuan Zhi an embodiment synoptic diagram.In a preferred embodiment, this near-field communication device is the RFID tag in the radio-frequency recognition system.Therefore, at follow-up paragraph, this near-field communication device is to be illustrated with a RFID tag 100.RFID tag 100 includes an antenna 102, a signal processing circuit 104, a storage device 106 and a signal transmission interface 108.Antenna 102 is in order to receive from the wireless signal Srf of an external reader (reader) (not shown) or to send wireless signal Srf to this external reader.Signal processing circuit 104 has one first connectivity port 1042, one second connectivity port 1044 and one the 3rd connectivity port 1046, and wherein first connectivity port 1042 is coupled to antenna 102.Storage device 106 is coupled to second connectivity port 1044, and it is the data that store from signal processing circuit 104.Signal transmission interface 108 is coupled to the 3rd connectivity port 1046, and it is intended to be between signal processing circuit 104 and the external signal So communication media is provided.In the present embodiment, one first interface 1082 of signal transmission interface 108 is the 3rd connectivity ports 1046 that are directly connected in signal processing circuit 104, and second interface 1084 be to be connected in an external device (ED) (not shown), wherein external signal So can be the signal that this external device (ED) produces signal processing circuit 104, or the signal that produces of 104 pairs of external device (ED)s 112 of signal processing circuit.In addition, signal transmission interface 108 provided by the present invention is the particular memory region 1062 to storage device 106 of videoing.Further, signal processing circuit 104 can be according to the external signal So that receives from signal transmission interface 108, one particular data is stored in particular memory region 1062, or particular memory region 1062 stored information are sent to this external device (ED) by signal transmission interface 108.Therefore, at above-mentioned two kinds of different embodiment, the present invention provides Fig. 2 and Fig. 3 to further specify it to divide other technical characterictic in addition.
Please refer to Fig. 2.Shown in Figure 2 is one first embodiment synoptic diagram of a kind of RFID tag 200 of the present invention.RFID tag 200 includes an antenna 202, a signal processing circuit 204, a storage device 206 and a signal transmission interface 208.Signal processing circuit 204 has one first connectivity port 2042, one second connectivity port 2044 and one the 3rd connectivity port 2046.Signal transmission interface 208 is the particular memory region 2062 to storage device 206 of videoing.Note that in the present embodiment the coupling mode between the assembly of RFID tag 200 is the RFID tag 100 similar in appearance to Fig. 1, so do not give unnecessary details in addition at this.In addition, an external device (ED) 210 is coupled to second interface 2084 of signal transmission interface 208.When external device (ED) 210 produces an external signal So ', external signal So ' can be sent to signal processing circuit 204 by signal transmission interface 208, and signal processing circuit 204 will be stored in particular memory region 2062 to upgrade the data in the particular memory region 2062 with a particular data according to external signal So '.Then, signal processing circuit 204 can be according to the data after upgrading in the particular memory region 2062, that is this particular data, produce one transmit signal St ' to antenna 202 so that this particular data is sent to an external reader 212 in the mode of wireless (that is by wireless signal Srf ').Thus, external device (ED) 210 just can upgrade the stored data of storage device 206 by signal transmission interface 208 provided by the present invention, and signal processing circuit 204 and antenna 202 also can be real-time (or by after a period of time) data after will upgrading transmit external reader 212 so that the user of RFID tag 200 can in time know the up-to-date information in the storage device 206.
Please refer to Fig. 3.Shown in Figure 3 is one second embodiment synoptic diagram of a kind of RFID tag 300 of the present invention.RFID tag 300 includes an antenna 302, a signal processing circuit 304, a storage device 306 and a signal transmission interface 308.Signal processing circuit 304 has one first connectivity port 3042, one second connectivity port 3044 and one the 3rd connectivity port 3046.Signal transmission interface 308 is the particular memory region 3062 to storage device 306 of videoing.In like manner, in the present embodiment, the coupling mode between the assembly of RFID tag 300 is the RFID tag 100 similar in appearance to Fig. 1, so do not give unnecessary details in addition at this.In addition, an external device (ED) 310 is coupled to second interface 3084 of signal transmission interface 308.When antenna 302 receives the wireless signal Srf that an external reader 212 is launched " time, signal processing circuit 304 will be to wireless signal Srf " decode to produce a corresponding particular data and utilize this particular data to upgrade the particular memory region 3062 of storage device 306.Then, the data storing state after signal processing circuit 304 will be upgraded one of particular memory region 3062 exports the external device (ED) 310 that is coupled to signal transmission interface 308 to by signal transmission interface 308.In other words, signal processing circuit 304 can produce an external signal So according to stored information in the particular memory region 3062 " to external device (ED) 310, so that external device (ED) 310 can receive the up-to-date information that is stored in the particular memory region 3062 in time.Note that signal processing circuit 304 of the present invention does not limit upgrades particular memory region 3062 and produces external signal So " sequencing.In one embodiment, signal processing circuit 304 can be upgraded particular memory region 3062 according to this particular data earlier, produces external signal So according to this particular data more afterwards " to external device (ED) 310.In another embodiment, signal processing circuit 304 can produce external signal So according to this particular data earlier " to external device (ED) 310, upgrade particular memory region 3062 according to this particular data more afterwards.And in another embodiment, signal processing circuit 304 can simultaneously produce external signal So according to this particular data " to external device (ED) 310 and upgrade particular memory region 3062.Thus, external device (ED) 310 just can upgrade the stored data of storage device 306 by signal transmission interface 308 provided by the present invention, so that the user of external device (ED) 310 can in time know the up-to-date information of the storage device 306 in the RFID tag 300.
Please note, though the embodiment of above-mentioned two kinds of different operating kenels illustrates with different accompanying drawing (that is Fig. 2 and Fig. 3) respectively, yet its do not represent its be defined as self-existent, this field has knows that usually the knowledgeable is reading above-mentioned technical scheme of instructing, its technical characterictic can be incorporated in the same RFID tag after suitably revising, it also belongs to category of the present invention place.Please refer to Fig. 4.Shown in Figure 4 is an embodiment synoptic diagram according to the present invention's one signal transmission interface 400.Signal transmission interface 400 be integrated the 2nd and Fig. 3 in signal transmission interface 208 and 308 technical characterictic.Therefore, signal transmission interface 400 includes one first input signal interface 401, a plurality of bleeder circuit 402, one second input signal interface 403, one the 3rd input signal interface 404, a plurality of load circuit 405 and one the 4th input signal interface 406, wherein the first input signal interface 401, a plurality of bleeder circuit 402 and the second input signal interface 403 constitute signal transmission interface 208, and the 3rd input signal interface 404, a plurality of load circuit 405 and the 4th input signal interface 406 constitute signal transmission interface 308.The first input signal interface 401 has a plurality of end points N1-N4 and is coupled to a signal processing circuit 407, be used for producing a plurality of input signal Si 1-Si4 respectively on a plurality of end points N1-N4 according to a plurality of inputs position So1-So4, wherein the voltage level of each input signal among a plurality of input signal Si 1-Si4 is to be controlled by an input position among a plurality of inputs position So1-So4, optionally to be set to one first voltage level or one second voltage level.Note that a plurality of inputs position So1-So4 is equivalent to external signal So '.
In the present embodiment, each bleeder circuit in a plurality of bleeder circuits 402 includes one first resistance 402a, an on-off circuit 402b and one second resistance 402c.The first resistance 402a (for example resistance value of 10K) has one first end points and is coupled to one first voltage vcc (a for example supply voltage), and one second end points (that is end points N1) is coupled to signal processing circuit 407.On-off circuit 402b has this second end points that one first end points is coupled to the first resistance 402a, and a control end points is coupled to an input position (for example So1) among a plurality of inputs position So1-So4.The second resistance 402c (for example resistance value of 1K) has one second end that one first end points is coupled to on-off circuit 402b, and one second end points couples one second voltage Vgnd (a for example ground voltage).Each is imported the position and controls this second end points that this first end points of each second resistance optionally is coupled to this first resistance respectively.Circuit connecting mode with reference to the signal transmission interface 400 of figure 4 can be learnt, when an input this first end points with one second resistance was coupled to this second end points of one first resistance, its corresponding input signal (for example input position So1 corresponds to input signal Si 1) can have lower voltage level because of the relation of electric resistance partial pressure.Otherwise when this input position during with this second end points disconnection of this first end points of this second resistance and this first resistance, its corresponding input signal can have the higher voltage level.Therefore, signal processing circuit 407 will be decoded according to the value that a plurality of end points N1-N4 go up a plurality of input signal Si 1-Si4, upgrades data in the particular memory region 2062 to produce a particular data.
On the other hand, the 3rd input signal interface 404 has a plurality of end points N5-N8 and is coupled to signal processing circuit 407, is used for exporting respectively a plurality of carry-out bit So5-So8 and the 4th input signal interface 406 has a plurality of exit point N9-N12.Note that a plurality of carry-out bit So5-So8 are equivalent to external signal So ".Each load circuit in a plurality of load circuits 405 includes a resistance (for example 405a).This resistance has one first end points and is coupled to first voltage vcc, and one second end points is coupled to signal processing circuit 407 and is used for exporting a carry-out bit among a plurality of carry-out bit So5-So8 (for example So5).Circuit connecting mode with reference to the signal transmission interface 400 of figure 4 can be learnt, signal processing circuit 407 can be controlled the voltage level at a plurality of end points N5-N8 place according to the data in the particular memory region 3062 of storage device 306 respectively, and a plurality of exit point N9-N12 is used for exporting respectively corresponding a plurality of carry-out bit So5-So8 to external device (ED) 310.
Please refer to Fig. 5.Shown in Figure 5 is an embodiment synoptic diagram according to a kind of medicine loading attachment 500 of the present invention, and it is an application example of RFID tag 200 of the present invention.Medicine loading attachment 500 includes a RFID tag 502 and a plurality of cartridge bag 504 with conductor characteristics.RFID tag 502 includes an antenna 5022, a signal processing circuit 5024, a storage device 5026 and a signal transmission interface 5028.Please note, antenna 5022 in the present embodiment, signal processing circuit 5024, storage device 5026 and signal transmission interface 5028 are similar in appearance to RFID tag 200 minutes other antennas 202, signal processing circuit 204, storage device 206 and signal transmission interfaces 208, so it divides other technical characterictic and couple to close and ties up to this and do not give unnecessary details in addition.In addition, the signal transmission interface 5028 of present embodiment is an input signal interface, include a plurality of signal transmission path 5028a-5028h, be used for setting a plurality of inputs position Sia-Sih respectively, wherein a plurality of signal transmission path 5028a-5028h a plurality of cartridge bag 5030a-5030h with conductor characteristics that contact respectively, and these conducting states with cartridge bag 5030a-5030h of conductor characteristics are the logical values that determine these input positions Sia-Sih.When a drug use person pokes one of them cartridge bag (for example 5030a) to take out pill in this cartridge bag, this corresponding signal transmission path (for example 5028a) will disconnect, and with reference to learning that about a plurality of bleeder circuits 402 disclosed technical characterictics of Fig. 4 the input position of this correspondence (for example Sia) will have the higher voltage level.Thus, RFID tag 502 just can read these voltage levels of importing position Sia-Sih by signal transmission interface 5028 and judge whether the pill in the cartridge bag is removed, and then chases after vertical this drug use person's drug taking behavior.The person of connecing, as RFID tag 200, RFID tag 502 will be stored in storage device 5026 with the particular data of decoding out according to voltage levels of these input positions Sia-Sih, and by antenna 5022 transmissions one RF signal S ra to an external reader.Thus, this drug use person's drug taking behavior just can be recorded and automatically be sent to a relevant unit, chases after vertical its drug taking behavior and need not to spend supernumerary's power again.
Please refer to Fig. 6.Shown in Figure 6 is an embodiment synoptic diagram according to a kind of price display device 600 of the present invention, and it is an application example of RFID tag 300 of the present invention.Price display device 600 includes a RFID tag 602 and a price display 604.RFID tag 602 includes an antenna 6022, a signal processing circuit 6024, a storage device 6026, a signal transmission interface 6028 and a power supply unit 6030.Please note, antenna 6022 in the present embodiment, signal processing circuit 6024, storage device 6026 and signal transmission interface 6028 are similar in appearance to RFID tag 300 minutes other antennas 302, signal processing circuit 304, storage device 306 and signal transmission interfaces 308, therefore it divides other technical characterictic and couples to close and ties up to this and do not give unnecessary details in addition, and power supply unit 6030 is to be used to provide a power supply in price display 604.In addition, the signal transmission interface 5028 of present embodiment is an output signal interface, and it has a plurality of output terminal Noa-Noi and is used for exporting a plurality of carry-out bit Da-Di respectively.Therefore, this this carry-out bit Da-Di is the shown numeral (or price) of controlled price display 604.As RFID tag 300, when the antenna 6022 of price display device 600 receives the RF signal S rb that launches from an external reader with the shown price of change price display 604, signal processing circuit 6024 will be stored in storage device 6026 with the price that the institute desire is upgraded, and produces carry-out bit Da-Di that should price on output terminal Noa-Noi.Then, price display 604 will show up-to-date price according to carry-out bit Da-Di.Thus, when the use amount of price display device 600 is very big, just can directly change the shown price of each price display device wirelessly with a transmitter, and need not to upgrade one by one its price, and then save great amount of manpower and time.
In sum, because the present invention is provided with a signal transmission interface with the particular memory region of direct reflection to this RFID tag to a RFID tag, therefore data can directly write this particular memory region by this signal transmission interface, or directly read the data of this particular memory region by this signal transmission interface, and then the data that reduce this RFID tag complexity that writes or export, and do not need the traditional mode of recycling to carry out data access.Moreover because this signal transmission interface need not to operate in the frequency range of radio frequency, so this RFID tag also has extremely low cost of manufacture.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (13)
1. near-field communication device includes:
One antenna is received a wireless signal in order to pass;
One signal processing circuit has one first connectivity port, one second connectivity port and one the 3rd connectivity port, and this first connectivity port is coupled to this antenna;
One storage device is coupled to this second connectivity port, is used for storing the data from this signal processing circuit; And
One signal transmission interface is directly connected in the 3rd connectivity port, is used for a video particular memory region of this storage device of an external signal, and this external signal includes at least one input position, and this signal transmission interface includes:
One input signal interface, have at least one end points and be directly connected in this signal processing circuit, being used for according to this at least one input position produces at least one input signal respectively on this at least one end points, wherein the voltage level of each input signal in this at least one input signal is to be controlled by an input position in this at least one input position, optionally to be set to one first voltage level or one second voltage level.
2. near-field communication device according to claim 1 is characterized in that, this signal processing circuit is according to the external signal from this signal transmission interface, and a particular data of this external signal correspondence is stored in this particular memory region.
3. near-field communication device according to claim 2 is characterized in that, this signal processing circuit sends a signal to this antenna in addition according to this stored particular data of this particular memory region.
4. near-field communication device according to claim 1 is characterized in that, this signal processing circuit is exported the external signal of this data storing state correspondence to this signal transmission interface according to a data storing state of this particular memory region.
5. near-field communication device according to claim 4 is characterized in that, this signal processing circuit is stored in this particular memory region according to the received particular data of this antenna in addition.
6. near-field communication device according to claim 1 is characterized in that, this input signal interface includes:
At least one bleeder circuit, wherein each bleeder circuit includes:
One first resistance has one first end points and be coupled to one first voltage, and one second end points is coupled to this signal processing circuit;
One on-off circuit has this second end points that one first end points is coupled to this first resistance, and a control end points is coupled to an input position in this a plurality of inputs position; And
One second resistance have one second end that one first end points is coupled to this on-off circuit, and one second end points couples one second voltage;
Wherein this first end points of this this second resistance of input position control optionally is coupled to this second end points of this first resistance.
7. near-field communication device according to claim 1 is characterized in that, this input signal interface includes:
At least one signal transmission path, be used for setting this at least one input position respectively, wherein each signal transmission path polyphone one has the packing of conductor characteristics, and this conducting state with packing of conductor characteristics is the logical value that determines a corresponding input position.
8. near-field communication device includes:
One antenna is received a wireless signal in order to pass;
One signal processing circuit has one first connectivity port, one second connectivity port and one the 3rd connectivity port, and this first connectivity port is coupled to this antenna;
One storage device is coupled to this second connectivity port, is used for storing the data from this signal processing circuit; And
One signal transmission interface is directly connected in the 3rd connectivity port, is used for a video particular memory region of this storage device of an external signal, and this external signal includes at least one carry-out bit, and this signal transmission interface includes:
One output signal interface has at least one exit point and is coupled to this signal processing circuit, is used for exporting respectively this at least one carry-out bit.
9. near-field communication device according to claim 8 is characterized in that, this output signal interface includes:
At least one load circuit, wherein each load circuit includes:
One resistance has one first end points and is coupled to a voltage, and one second end points is coupled to this signal processing circuit and is used for exporting a carry-out bit in this at least one carry-out bit.
10. near-field communication device according to claim 8 is characterized in that, other includes:
One display device is coupled to this output signal interface, is used for showing according to this at least one carry-out bit.
11. near-field communication device according to claim 9 is characterized in that, this display device shows a numeral according to this at least one carry-out bit.
12. near-field communication device according to claim 11 is characterized in that, this display device is a price display.
13. a near-field communication method is used for a wireless identification label device, this device comprises a storage device and a signal transmission interface, and this method includes:
Reception is from an external signal of this signal transmission interface, and this external signal includes at least one input position;
At least one input position produces at least one input signal respectively according to this, wherein the voltage level of each input signal in this at least one input signal is to be controlled by an input position in this at least one input position, optionally to be set to one first voltage level or one second voltage level;
To directly video to a particular memory region of this storage device from the external signal of this signal transmission interface; And
According to this stored particular data of this particular memory region, produce a wireless transmitted signals.
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| CN102156897B (en) * | 2011-03-30 | 2014-04-02 | 惠州Tcl移动通信有限公司 | Secure digital card and method for realizing near field communication function on same |
| CN107247988A (en) * | 2017-06-20 | 2017-10-13 | 翁毅 | A kind of RFID module of intelligent electrical apparatus release |
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| CN1658209A (en) * | 2004-02-19 | 2005-08-24 | 东芝泰格有限公司 | Article price management system |
| CN101013903A (en) * | 2007-01-12 | 2007-08-08 | 上海复旦微电子股份有限公司 | Near-field communication handset with multi-way switch interface and method of power supply and communication thereof |
| CN101145190A (en) * | 2006-09-11 | 2008-03-19 | 英赛康特雷斯公司 | Method for connecting a contactless integrated circuit to an nfc component |
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| CN1744108A (en) * | 2005-09-28 | 2006-03-08 | 王铁立 | Contactless solar RFID digital paper namecard |
| CN201229580Y (en) * | 2008-03-31 | 2009-04-29 | 精联电子股份有限公司 | Reader having wireless RFID function |
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| CN1658209A (en) * | 2004-02-19 | 2005-08-24 | 东芝泰格有限公司 | Article price management system |
| CN101145190A (en) * | 2006-09-11 | 2008-03-19 | 英赛康特雷斯公司 | Method for connecting a contactless integrated circuit to an nfc component |
| CN101013903A (en) * | 2007-01-12 | 2007-08-08 | 上海复旦微电子股份有限公司 | Near-field communication handset with multi-way switch interface and method of power supply and communication thereof |
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Effective date of registration: 20201027 Address after: No. 1, Xingzhu Road, Hsinchu Science Park, Taiwan, China Patentee after: MEDIATEK Inc. Address before: 518057, Guangdong, Shenzhen hi tech Zone, South District, science and technology, South ten road, Shenzhen Institute of Aerospace Science and technology innovation, C block, building 4 Patentee before: Mstar Semiconductor,Inc. Patentee before: MEDIATEK Inc. Effective date of registration: 20201027 Address after: 4 / F, block C, Shenzhen Aerospace Science and Technology Innovation Research Institute, science and technology south 10th Road, South District, Shenzhen high tech Zone, Guangdong Province Patentee after: Mstar Semiconductor,Inc. Patentee after: MEDIATEK Inc. Address before: 518057, Guangdong, Shenzhen hi tech Zone, South District, science and technology, South ten road, Shenzhen Institute of Aerospace Science and technology innovation, C block, building 4 Patentee before: Mstar Semiconductor,Inc. Patentee before: MSTAR SEMICONDUCTOR Inc. |