CN203968096U - A kind of passive magnetic strength key device - Google Patents

A kind of passive magnetic strength key device Download PDF

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Publication number
CN203968096U
CN203968096U CN201420247463.3U CN201420247463U CN203968096U CN 203968096 U CN203968096 U CN 203968096U CN 201420247463 U CN201420247463 U CN 201420247463U CN 203968096 U CN203968096 U CN 203968096U
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China
Prior art keywords
key device
radio frequency
frequency chip
nfc
switch
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Active
Application number
CN201420247463.3U
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Chinese (zh)
Inventor
吕菲
张宇路
王紫昀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou 8 MM Technology Co., Ltd.
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Guangdong Seedcom Electrical & Lighting Co Ltd
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Priority to CN201420247463.3U priority Critical patent/CN203968096U/en
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Abstract

The utility model discloses a kind of passive magnetic strength key device, comprise radio frequency chip and for carrying out antenna and the match circuit of near-field communication with outside NFC equipment, also comprise a switch key device, described switch key device one end is connected with antenna and match circuit, and the other end is connected with radio frequency chip.The utility model by arranging switch key device between radio frequency chip and antenna and match circuit, this switch key device can do very thinly according to existing technique, very light, and with pressure sensitive adhesive be combined on mobile phone with NFC module, notebook computer or the shell of various access control equipment with NFC function, the various card reader that read passive RFID tags first-class, do not want can arbitrarily remove and tear when using or not needing to use, make Function Extension not affect the use of other functions.

Description

A kind of passive magnetic strength key device
Technical field
The utility model relates to electronic information technical field, specifically refers to a kind of passive magnetic strength key device.
Background technology
Along with the development of the short distance wireless communication technology, increasing mobile phone has been supported the function of NFC (Near Field Communication, wireless near field communication), and can operate in reader/writer mode, point-to-point mode, under these three kinds of patterns of snap gauge simulation models.NFC embedded in mobile phone NFC radio frequency chip, a part for composition RFID module, can be used as RFID passive label and use---be used for defrayment; Also can be used as rfid interrogator---as exchanges data and collection.The multiple application of NFC technical support, comprise mobile payment and transaction, to equation communicate by letter and mobile in message reference etc.By NFC mobile phone, people can in any place, any time, by any equipment, wish that with them the entertainment service and the transaction that obtain link together, thereby complete payment, obtain placard information etc.NFC equipment can be used as read write line terminal and the data transmission link of equipment to equipment of contact type intelligent card, smart card, and its application mainly can be divided into following four fundamental types: for payment and booking, for electronic bill, for smart media and for exchange, transmission data.
The same with RFID, NFC information is also the electromagnetic induction coupled modes transmission by wireless frequency part in frequency spectrum, but still has very large difference between the two.First, NFC is a kind of wireless connect technology that provides easily, communicates by letter safely, rapidly, its transmission range is less than RFID, the transmission range of RFID can reach several meters, even tens meters, but because NFC has taked unique signal attenuation technique, with respect to RFID, NFC has the features such as near distance, bandwidth is high, energy consumption is low.Secondly, NFC and existing contactless smart card technical compatibility, become and obtained the official standard that more and more leading firms support at present.Again, closely connection protocol of NFC or one, provides light between various device, safe, communication rapidly and automatically.Compared with other connected modes in wireless world, NFC is a kind of in-plant secret communication mode.Finally, RFID is more used in production, logistics, tracking, asset management, and NFC is bringing into play huge effect in the fields such as gate inhibition, public transport, mobile-phone payment.
Conventionally,, for realizing the electromagnetic induction coupling of above-mentioned wireless frequency part, NFC radio frequency chip and radio-frequency antenna peripheral circuit in current NFC mobile phone, have all been comprised, NFC protocol stack sofeware, NFC application framework and application program.NFC protocol stack sofeware operates in mobile phone host CPU (Central Processing Unit, central processing unit) on, the interface providing by NFC radio frequency chip is communicated by letter with it, realize read write line, point-to-point, the snap gauge of NFC Forum standardization body definition and intend this three agreements that kind pattern is required, between mobile phone, can carry out alternately based on NFC ensureing.NFC application framework and application program, from the angle of software architecture, operate on NFC protocol stack sofeware, completes concrete to write card as Card Reader, the customer service based on NFC such as exchange visiting cards.
Along with user function expansion and the easy to operate demand of user, the mobile phone of existing support NFC function is aspect mobile phone external shortcut, on market, occur as smart key such as meter Jian, 360 intelligence keys, smart key is supported from built-in application and shortcut, the object that reaches external button by expansion earphone mouth, the shortcoming of this kind of mode is, has used these products, just can not use earphone simultaneously, reduce user and experience.
Utility model content
The purpose of this utility model is to overcome weak point of the prior art, provides and under a kind of prerequisite of Function Extension supporting product, does not affect the passive magnetic strength key device that itself function is used.
The purpose of this utility model is achieved through the following technical solutions:
Passive magnetic strength key device, comprise radio frequency chip and for carrying out antenna and the match circuit of near-field communication with outside NFC equipment, it is characterized in that: also comprise a switch key device, described switch key device one end is connected with antenna and match circuit, and the other end is connected with radio frequency chip.
Concrete, described radio frequency chip is NFC radio frequency chip.
Concrete, described radio frequency chip is passive RFID tags chip.
Concrete, described switch key device comprises an electromagnetic induction coil and a thin film switch, and described electromagnetic induction coil is connected in series with thin film switch and forms electromagnetic control circuit, and radio frequency chip connects induction coil by thin film switch.
Preferably, described radio frequency chip is directly encapsulated in the inside of thin film switch.
Preferably, described thin film switch has multiple switch contacts, and forms switch matrix mode key input apparatus.
The utility model has the following advantages and beneficial effect compared to existing technology:
1, the utility model by arranging switch key device between radio frequency chip and antenna and match circuit, this switch key device can do very thinly according to existing technique, very light, and with pressure sensitive adhesive be combined on mobile phone with NFC module, notebook computer or the shell of various access control equipment with NFC function, the various card reader that read passive RFID tags first-class, do not want can arbitrarily remove and tear when using or not needing to use, make Function Extension not affect the use of other functions.
2, circuit part of the present utility model can be printed on various solid dielectrics, in mobile phone shell, plays same effect, has expanded the function of other products.
3, when passive magnetic strength key device of the present utility model is applied on mobile phone, can expand many shortcut functions to mobile phone, as driving photoflash lamp, take pictures, play music etc. under screen lock state, realize simple, easy to use.
4, switch key device adopts thin film switch, and product cost is low.
5, chip package, in switch inside, has further reduced small product size.
Brief description of the drawings
Fig. 1 is the structural representation of the passive magnetic strength key device of the utility model.
Fig. 2 is the circuit theory diagrams of a kind of switch key device of the present embodiment.
Fig. 3 is the circuit theory diagrams of the another kind of switch key device of the present embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, the present embodiment provides a kind of passive magnetic strength key device, comprise radio frequency chip 1 and for carrying out antenna and the match circuit 3 of near-field communication with outside NFC equipment 2, also comprise a switch key device 4, described switch key device 4 one end are connected with antenna and match circuit 3, and the other end is connected with radio frequency chip 1.
In one embodiment, described radio frequency chip is NFC radio frequency chip.
In another kind of embodiment, described radio frequency chip is passive RFID tags chip.
As shown in Figure 2, described switch key device comprises an electromagnetic induction coil 5 and a thin film switch 6, and described electromagnetic induction coil 5 is connected in series with thin film switch 6 and forms electromagnetic control circuit, and radio frequency chip 1 connects induction coil 5 by thin film switch 6.
In the present embodiment, to make generation current in the electromagnetic induction coil 5 of this example by the product (as mobile phone or notebook etc. with NFC function) that has power supply and there is NFC module for reading and writing, the method of generation current is to pass through electromagnetic induction, as the electromagnetic wave of mobile phone NFC module transmission, make electromagnetic induction coil 5 cutting magnetic fields in this example, make electromagnetic induction coil 5 generation currents by electromagnetic induction effect, now on electromagnetic induction coil 5, add a thin film switch formation and open circuit.Generally, mobile phone NFC module is sent while reading label information, because electromagnetic induction coil 5 opens circuit with radio frequency chip 1, cannot form electric current and can not work by electronic induction effect, make circuit turn-on if now press thin film switch, can form loop, now label is just connected by NFC Module recognition simultaneously, starts mutually to reply with mobile phone, and mobile phone detects after label, coordinate special application program, can complete corresponding action.
Described radio frequency chip is directly encapsulated in the inside of thin film switch.Adopt said structure, can effectively reduce the space hold of this product; Thin film switch can play certain protection for chip; The metal switch using can shield the interference of external electromagnetic field to chip, increases stability.
As a kind of embodiment, as shown in Figure 3, described thin film switch 6 has multiple switch contacts, and forms the key input apparatus of switch matrix mode.Form the key input apparatus of switch matrix mode, input mode that can self-defined input message, thus can realize the various ways input of information.
Above-described embodiment is preferably execution mode of the utility model; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.

Claims (6)

1. a passive magnetic strength key device, comprise radio frequency chip and for carrying out antenna and the match circuit of near-field communication with outside NFC equipment, it is characterized in that: also comprise a switch key device, described switch key device one end is connected with antenna and match circuit, and the other end is connected with radio frequency chip.
2. passive magnetic strength key device according to claim 1, is characterized in that: described radio frequency chip is NFC radio frequency chip.
3. passive magnetic strength key device according to claim 1, is characterized in that: described radio frequency chip is passive RFID tags chip.
4. according to passive magnetic strength key device described in claim 1-3 any one, it is characterized in that: described switch key device comprises an electromagnetic induction coil and a thin film switch, described electromagnetic induction coil is connected in series with thin film switch and forms electromagnetic control circuit, and radio frequency chip connects induction coil by thin film switch.
5. passive magnetic strength key device according to claim 4, is characterized in that: described radio frequency chip is directly encapsulated in the inside of thin film switch.
6. passive magnetic strength key device according to claim 4, is characterized in that: described thin film switch has multiple switch contacts, and forms switch matrix mode key input apparatus.
CN201420247463.3U 2014-05-14 2014-05-14 A kind of passive magnetic strength key device Active CN203968096U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420247463.3U CN203968096U (en) 2014-05-14 2014-05-14 A kind of passive magnetic strength key device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420247463.3U CN203968096U (en) 2014-05-14 2014-05-14 A kind of passive magnetic strength key device

Publications (1)

Publication Number Publication Date
CN203968096U true CN203968096U (en) 2014-11-26

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Application Number Title Priority Date Filing Date
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Country Status (1)

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CN (1) CN203968096U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104683521A (en) * 2015-03-30 2015-06-03 惠州Tcl移动通信有限公司 Intelligent terminal package and intelligent terminal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104683521A (en) * 2015-03-30 2015-06-03 惠州Tcl移动通信有限公司 Intelligent terminal package and intelligent terminal

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20170523

Address after: 516000 Guangdong city of Huizhou province huiao Avenue South High-tech Industrial Park Road No. 2 South Huatai science and technology innovation center 2 Building 1 floor

Patentee after: Huizhou 8 MM Technology Co., Ltd.

Address before: Huinan science and Technology Industrial Park in Guangdong province Huizhou City Huatai road 516006 Zhongkai District No. 1 Building No. 2

Patentee before: Guangdong Seedcom Electrical & Lighting Co., Ltd.

TR01 Transfer of patent right