KR101532965B1 - Passive rfid chip and communication apparatus having passive rfid chip - Google Patents

Passive rfid chip and communication apparatus having passive rfid chip Download PDF

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Publication number
KR101532965B1
KR101532965B1 KR1020140041269A KR20140041269A KR101532965B1 KR 101532965 B1 KR101532965 B1 KR 101532965B1 KR 1020140041269 A KR1020140041269 A KR 1020140041269A KR 20140041269 A KR20140041269 A KR 20140041269A KR 101532965 B1 KR101532965 B1 KR 101532965B1
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KR
South Korea
Prior art keywords
power
switch
turned
rfid chip
unit
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KR1020140041269A
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Korean (ko)
Inventor
임은석
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임은석
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Priority to KR1020140041269A priority Critical patent/KR101532965B1/en
Priority to PCT/KR2015/003251 priority patent/WO2015156535A1/en
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Publication of KR101532965B1 publication Critical patent/KR101532965B1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

The present invention relates to a passive RFID chip and a communication device provided with a passive RFID chip capable of controlling power of a communication device.
A communication device according to an embodiment of the present invention includes a passive RFID chip in which a switch unit that is turned on by a wireless signal or radio power received from an RF reader is embedded or detachable. And a power module that receives power from the battery. Particularly, the switch unit is connected to the battery and the power source unit, and when the switch unit is turned on, the power source of the battery is supplied to the power source unit via the switch unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a communication device including a passive RFID chip and a passive RFID chip,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device provided with a passive RFID chip and a passive RFID chip, and more particularly to a passive RFID chip and a communication device including the passive RFID chip.

RFID (Radio Frequency Identification) is a system in which tags are attached to a product and contains information about the whole process of production, distribution, storage, and consumption. It also has its own antenna. The reader reads this information, And chips and antennas used in integration with information systems.

On the other hand, the RFID system includes a tag for storing information and exchanging data in a protocol as described above, and a reader (reader) for communicating with the tag.

An RFID tag is an active type requiring power depending on the presence or absence of a power supply, a passive type operated by a reader's electromagnetic field, and a semi-passive type, Passive type, and various frequencies from 125 KHz to 960 MHz are used depending on the frequency band. Among them, the 13.56Mhz band is internationally standardized as an NFC (Near Field Communication) system, and is installed as a basic function of a smart phone, and provides services such as settlement and information provision. Various types of system control methods Are also being developed. Related prior art documents are disclosed in Patent Publication No. 10-2008-0053195.

The conventional passive RFID chip operates by receiving the signal of the reader, but the passive RFID chip does not directly control the power of the wireless communication system.

Therefore, it is necessary to study passive RFID chip which can directly control power of wireless communication system.

It is an object of the present invention to provide a passive RFID chip capable of controlling power of a communication device and a communication device provided with the passive RFID chip.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a passive RFID chip capable of connecting or disconnecting an external independent signal or power supply through a wireless signal or radio power received from an RF reader.

In order to achieve the above object, according to one embodiment of the present invention, there is provided a communication device in which a battery is installed or detachable, comprising: a passive device having a switch part turned on by a radio signal received from an RF reader, RFID chip; And a power supply unit that receives power from the battery, wherein the switch unit is connected to the battery and the power supply unit, and when the switch unit is turned on, the power of the battery is transmitted via the switch unit A communication device supplied to the power supply unit is provided.

According to an aspect of the present invention, there is provided a passive RFID chip including a demodulator, a modulator, and a rectifier, wherein when receiving a radio signal or radio power from an RF reader, There is provided a passive RFID chip including a switch unit for connecting the RFID chip to each other.

The communication device including the passive type RFID chip and the passive type RFID chip according to the embodiment of the present invention can increase the lifetime of the battery of the communication device by directly controlling the power of the communication module.

The passive RFID chip according to an embodiment of the present invention can connect or disconnect the external independent signal or power supplied to the specific device through a radio signal or radio power received from the RF reader.

1 is a block diagram illustrating an example in which a communication device associated with an embodiment of the present invention wakes up and operates.
2 is a block diagram of a passive RFID chip according to an embodiment of the present invention.
3 is a configuration diagram of a communication apparatus according to an embodiment of the present invention.
4 and 5 are flowcharts illustrating an example in which a communication device associated with an embodiment of the present invention wakes up and operates.

Hereinafter, a communication device including a passive RFID chip and a passive RFID chip according to an embodiment of the present invention will be described with reference to the drawings.

As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. In this specification, the terms "comprising ", or" comprising ", etc. should not be construed as necessarily including the various elements or steps described in the specification, Or may be further comprised of additional components or steps.

1 is a block diagram illustrating an example in which a communication device associated with an embodiment of the present invention wakes up and operates.

As shown, the communication device 100 may receive at least one of a wireless signal and a wireless power from the RF reader 10 and may be woken up. When the communication device 100 is woken up, the power of the battery 400 is supplied to the communication module 300. In this case, the passive RFID chip 200 can directly control the power of the battery 400 to be supplied to the communication module 300.

When the power of the battery 400 is supplied to the communication module 300, the communication device 100 communicates with the wireless communication terminal 20 to exchange data. When mutual data exchange is terminated, power supply from the battery 400 to the communication module 300 may be stopped by a command of a specific server (not shown) or a program instruction of the wireless communication terminal 20. [

The communication device 100 may be implemented as a personal portable product such as an electronic card, a mobile phone accessory, a waistband, a wristwatch, a wrist band, a necklace, or the like, or may be implemented as a product capable of independently supplying power by having a battery.

The communication module 300 is a component capable of performing wireless communication such as Wi-Fi, Bluetooth, ZigBee, CDMA, and GSM.

2 is a block diagram of a passive RFID chip according to an embodiment of the present invention.

The passive RFID chip 200 includes an antenna 210, a demodulator 220, a modulator 230, a rectifier 240, an input / output unit 250, a power unit 260, a controller 270, And a switch unit 280.

The antenna 210 plays a role of receiving data and wireless power from the RF reader 10 or transmitting data to the RF reader 10.

The demodulator 220 may demodulate the modulated signal received through the antenna 210 to the original signal. For example, the demodulator 220 may recover the modulated analog signal to a digital signal.

A modulator 230 may modulate the original signal to transmit a signal via the antenna 210. [ For example, the modulator 230 may convert a digital signal to an analog signal.

The rectifier 240 can convert the AC power received from the RF reader 10 into DC power.

The input / output unit 250 may receive data from the RF reader 10 or output data to the RF reader 10 to transmit data.

The power supply unit 260 receives the DC power received through the rectifying unit 240.

The control unit 270 can control ON / OFF of the switch unit 280. [ When the switch unit 280 is turned on / off, the switch unit 280 is turned on to connect the input terminal and the output terminal connected to the switch unit 280, The OFF state of the switch unit 280 means that the input terminal and the output terminal connected to the switch unit 280 are disconnected from each other.

The switch unit 280 may connect or disconnect the external independent signal or power according to the ON / OFF state of the switch unit 280. The illustrated embodiment shows that the switch unit 280 is connected to the input terminal of the battery power source and the output terminal of the battery power source.

The switch unit 280 may include a plurality of switches. For example, the switch unit 280 may include a first switch (switch A, 281) that is turned on when receiving a wake-up signal from the RF reader 10, and a second switch (Switch B, 282) that is turned on secondarily at the request of the controller 10 (switch B, 282).

The first switch (switch A, 281) can be turned on immediately when receiving a wake up signal from the RF reader 10.

The second switch (switch B, 282) may be turned on secondarily at the request of the RF reader 10 after receiving the wake-up signal.

When the switch unit 280 is provided with two switches, when the first switch (switch A, 281) and the second switch (switch B, 282) are all turned on, the switch unit 280 Is turned on so that the input terminal of the battery power source and the battery power source can be connected to each other.

3 is a configuration diagram of a communication apparatus according to an embodiment of the present invention.

As shown, the communication device 100 may include a passive RFID chip 200 and a communication module 300. The communication module 300 may serve as a main system of the communication device 100.

The power of the battery 400 is not supplied to the passive RFID chip 200 but may be supplied to the communication module 300 under the control of the passive RFID chip 200. The battery 400 may be embedded in the communication device 100 or detachably attached to the communication device 100.

The communication module 300 includes a power unit 310, a power controller 320, a microprocessor 330, a wireless transceiver 340, an antenna 350, a key input unit 360, a sensor unit 370, Lt; RTI ID = 0.0 > 380 < / RTI >

The power supply unit 310 may receive the power of the battery 400 through the switch unit 280 or the power control unit 320.

Hereinafter, a power source of the battery 400 supplied via the switch unit 280 is referred to as a first power source, and a power source of the battery 400 supplied via the power source control unit 320 is referred to as a second power source.

Hereinafter, the power supply path of the battery 400 supplied to the power supply unit 310 through the first switch (switch A, 281) of the switch unit 280 is referred to as a primary power supply circuit, The power supply path of the battery 400 supplied to the power supply unit 310 through the second switch (switches B and 282) is referred to as a secondary power supply circuit.

The power control unit 320 may turn on the power switch (switch C) provided even when the switch unit 280 is turned off, so that the power source of the battery 400 is supplied to the power source unit 310.

The microprocessor 330 may control the overall communication operation of the communication module 300.

The wireless transceiver 340 can transmit and receive data to / from the wireless communication terminal 20 through the antenna 350.

The key input unit 360 may receive the user input of the user.

The sensor unit 370 includes various sensors to generate a sensing signal. For example, when the external device is coupled, the sensor unit 370 can sense the external device.

The display unit 380 can display and output information processed by the microprocessor 330. [

Hereinafter, an example in which the communication device 100 shown in FIG. 3 is woken up and operates will be described in detail.

4 is a flowchart illustrating an example in which a power source of a battery is supplied to a communication module according to a wake up signal of an RF reader according to an embodiment of the present invention to operate the communication module.

The RF reader 10 recognizes the passive RFID chip 200 within a predetermined distance by recognizing the passive RFID chip 200 and transmits a wake-up signal and a wireless power (S41).

When the wakeup signal and the wireless power are received, the first switch (switch A, 281) provided in the passive RFID chip 200 is turned on, and the primary power circuit is turned on (S42, S43).

When the primary power source circuit is turned on, the first power source is supplied to the power source unit 310. When the first power is supplied, the communication module 300 is turned on (S44).

When the communication module 300 is turned on, the power control unit 330 can turn on the power switch (switch C) (S45).

When the switch C is turned on, the second power source is supplied to the power source unit 310 (S46).

In a state where either the first power source or the second power source is supplied, the communication module 300 can communicate with the wireless communication terminal 20 and exchange data with each other (S47).

When the communication device 100 is separated from the RF reader 10 by a predetermined distance or more, the supply of the wireless power to the passive RFID chip 200 is stopped in the RF reader 10 (S48).

When the supply of the radio power is interrupted, the first switch (switch A, 281) is turned off and the primary power supply circuit is turned off (S49, S50).

When the primary power circuit is turned off, the supply of the first power is interrupted. The supply of the second power source is maintained when the communication module 300 performs communication with the wireless communication terminal 20 even if the first power source is interrupted.

When the communication module 300 completes the communication with the wireless communication terminal 20 or there is an instruction of the program of the wireless communication terminal 20 or the like, the power supply control unit (not shown) 320) can be turned off (S51). The specific server may include a communication company server, a POS server, a home network server, and the like.

When the power switch (switch C) is turned off, the supply of the second power is interrupted (S52).

When the supply of both the first power source and the second power source is stopped, the battery 400 is powered off (S53) and the communication module 300 is turned off (S54).

In this case, the passive RFID chip 200 can use a frequency of 1 GHz or less. As described above, the frequency of 1 GHz or less is used because if the frequency exceeds 1 GHz, communication can be performed well, but an RF signal harmful to the human body can be received. In addition, the communication module 300 can use a frequency of 400 MHz or more for smooth wireless communication.

5 is a flowchart illustrating an example in which the power of a battery is supplied to a communication module in accordance with an instruction of an RF reader according to an embodiment of the present invention to operate the communication module.

The RF reader 10 recognizes the passive RFID chip 200 within a predetermined distance by recognizing the passive RFID chip 200 and transmits a wake-up signal and a wireless power (S61).

When the wake-up signal and the wireless power are received, the first switch (switch A, 281) provided in the passive RFID chip 200 is turned on (S62).

When the first switch (switch A, 281) is turned on, the RF reader 10 and the passive RFID chip 200 can perform mutual authentication (S63).

When the mutual authentication is successfully completed, the RF reader 10 can transmit a command signal to the passive RFID chip 200 to turn on the second switch (switch B, 282) (S64).

When the command signal is received, the second switch (switch B, 282) is turned on (S65).

On the other hand, when the first switch (switch A, 281) is turned on, the primary power source circuit is turned on (S66), and when the second switch (switch B, 282) is turned on, the secondary power source circuit is turned on (S67).

The first power source is supplied to the power source unit 310 when both the primary power source circuit and the secondary power source circuit are turned on. When the first power is supplied, the communication module 300 is turned on (S68).

When the communication module 300 is turned on, the power control unit 330 can turn on the power switch (switch C) (S69).

When the switch C is turned on, the second power source is supplied to the power source unit 310 (S70).

In a state where either the first power source or the second power source is supplied, the communication module 300 can exchange data with each other by performing communication with the wireless communication terminal 20 (S71).

If the communication device 100 is separated from the RF reader 10 by a predetermined distance or more, the supply of the radio power supplied from the RF reader 10 to the passive RFID chip 200 is interrupted (S72).

When the supply of the radio power is interrupted, both the first switch (switch A, 281) and the second switch (switch B, 282) are turned off, and the primary and secondary power circuits are turned off (S73, S74).

When the primary and secondary power circuits are turned off, the supply of the first power is interrupted. The supply of the second power source is maintained when the communication module 300 performs communication with the wireless communication terminal 20 even if the first power source is interrupted.

When the communication module 300 completes the communication with the wireless communication terminal 20 or there is an instruction of the program of the wireless communication terminal 20 or the like, the power supply control unit (not shown) 320) can be turned off (S75). The specific server may include a communication company server, a POS server, a home network server, and the like.

When the power switch (switch C) is turned off, the supply of the second power is interrupted (S76).

When the supply of both the first power source and the second power source is stopped, the battery 400 is powered off (S77) and the communication module 300 is turned off (S78).

In this case, the passive RFID chip 200 can use a frequency of 1 GHz or less. As described above, the frequency of 1 GHz or less is used because if the frequency exceeds 1 GHz, communication can be performed well, but an RF signal harmful to the human body can be received. In addition, the communication module 300 can use a frequency of 400 MHz or more for smooth wireless communication.

As described above, the communication device provided with the passive type RFID chip and the passive type RFID chip can directly increase the lifetime of the battery of the communication device by performing the power source control of the communication module directly by the passive RFID chip.

The passive RFID chip according to an embodiment of the present invention can connect or disconnect the external independent signal or power supplied to the specific device through a radio signal or radio power received from the RF reader.

In addition, according to an embodiment of the present invention, the passive RFID chip may intermittently supply or disconnect an external independent signal or power supplied to a specific device, thereby essentially eliminating the standby mode. Therefore, it can increase battery life about 100 times more than existing wireless transmission / reception system.

The communication device including the passive type RFID chip and the passive type RFID chip described above can be applied not only to the configuration and method of the embodiments described above but also to various embodiments of the present invention, All or some of them may be selectively combined.

10: RF reader
100: communication device
200: Passive RFID chip
300: communication module
400: Battery
20: Wireless communication terminal

Claims (10)

A communication device comprising:
A passive RFID chip in which a switch section that is turned on by a wake-up signal of an RF reader and a switch-on (ON) command signal received from the RF reader in a wakeup state by wireless power transmission; And
And a power module that receives power from a battery for communication between the RF reader and another wireless communication terminal,
Wherein the switch unit is connected to the battery and the power source unit, and when the switch unit is turned on, the power source of the battery is supplied to the power source unit via the switch unit. The apparatus as claimed in claim 1,
A first switch that is turned on when the wake-up signal is received from the RF reader, and a second switch that is turned on by a switch-on command signal of the RF reader received after receiving the wake- And a second switch that is turned on when the first switch is turned on. The communication system according to claim 1,
Further comprising a power control unit having a power switch connected to the battery and the power unit in a path different from a path to which the battery, the switch unit, and the power unit are connected,
Wherein when the power switch is turned on, the power of the battery is supplied to the power source via the power switch. 4. The apparatus of claim 3, wherein the power switch
And the power supply is turned on after the passive RFID chip is woken up by a wake-up signal of the RF reader. The RFID reader of claim 1, wherein the passive RFID chip
Wherein a frequency of 1 GHz or less is used. The communication system according to claim 1,
Wherein a frequency of 400 MHz or more is used. The apparatus as claimed in claim 1,
And is turned off by an off command of the specific server. delete delete delete
KR1020140041269A 2014-04-07 2014-04-07 Passive rfid chip and communication apparatus having passive rfid chip KR101532965B1 (en)

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KR1020140041269A KR101532965B1 (en) 2014-04-07 2014-04-07 Passive rfid chip and communication apparatus having passive rfid chip
PCT/KR2015/003251 WO2015156535A1 (en) 2014-04-07 2015-04-01 Passive radio frequency identification (rfid) chip and communication device having passive rfid chip

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KR1020140041269A KR101532965B1 (en) 2014-04-07 2014-04-07 Passive rfid chip and communication apparatus having passive rfid chip

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WO2024071627A1 (en) * 2022-09-27 2024-04-04 삼성전자 주식회사 Power control circuit and electronic device which reduce standby power, and method therefor

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KR102432496B1 (en) * 2015-12-11 2022-08-12 삼성전자주식회사 Semiconductor device
CN111132290B (en) * 2019-12-30 2022-08-02 广东工业大学 Wireless control system and wireless control method for realizing power supply on-off operation of equipment

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KR20080052949A (en) * 2006-12-08 2008-06-12 한국전자통신연구원 Power cut-off apparatus and method in radio frequency identification systems
KR100869776B1 (en) * 2007-06-15 2008-11-21 아시아나아이디티 주식회사 Power saving active tag and reader including the capability of ordinary wake up and of transmission to distance

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KR100812994B1 (en) * 2005-12-09 2008-03-13 한국전자통신연구원 RFID Tag Apparatus with battery wake-up function, and its Method
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KR20080052949A (en) * 2006-12-08 2008-06-12 한국전자통신연구원 Power cut-off apparatus and method in radio frequency identification systems
KR100869776B1 (en) * 2007-06-15 2008-11-21 아시아나아이디티 주식회사 Power saving active tag and reader including the capability of ordinary wake up and of transmission to distance

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WO2024071627A1 (en) * 2022-09-27 2024-04-04 삼성전자 주식회사 Power control circuit and electronic device which reduce standby power, and method therefor

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