CN105680205B - Electronic signature equipment with rotary audio adapter - Google Patents

Electronic signature equipment with rotary audio adapter Download PDF

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Publication number
CN105680205B
CN105680205B CN201511032337.1A CN201511032337A CN105680205B CN 105680205 B CN105680205 B CN 105680205B CN 201511032337 A CN201511032337 A CN 201511032337A CN 105680205 B CN105680205 B CN 105680205B
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CN
China
Prior art keywords
electronic signature
audio
signature equipment
pogopin
thimbles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201511032337.1A
Other languages
Chinese (zh)
Other versions
CN105680205A (en
Inventor
靳松
陈良
张强
崔静波
苏文力
韦可斐
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.)
Beijing Huada Zhibao Electronic System Co Ltd
Original Assignee
Beijing Huada Zhibao Electronic System Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Huada Zhibao Electronic System Co Ltd filed Critical Beijing Huada Zhibao Electronic System Co Ltd
Priority to CN201511032337.1A priority Critical patent/CN105680205B/en
Publication of CN105680205A publication Critical patent/CN105680205A/en
Application granted granted Critical
Publication of CN105680205B publication Critical patent/CN105680205B/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/34—User authentication involving the use of external additional devices, e.g. dongles or smart cards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H01R13/6271—Latching means integral with the housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6675—Structural association with built-in electrical component with built-in electronic circuit with built-in power supply
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/06—Connectors or connections adapted for particular applications for computer periphery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/16—Connectors or connections adapted for particular applications for telephony

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Telephone Set Structure (AREA)

Abstract

The present invention provides a kind of electronic signature equipment with rotary audio adapter, and the electronic signature equipment is two generation USBKEY, including safety chip, liquid crystal display, several buttons, mother's USB mouth and pogo pin contact points；The audio frequency adaptor includes audio jack, power supply module, audio communication module and pogo pin thimbles；The pogo pin thimbles on the audio frequency adaptor are corresponded with the pogo pin contact points in the electronic signature equipment, by the connection of the pogo pin contact points and the pogo pin thimbles, being electrically connected for the electronic signature equipment and the audio frequency adaptor is realized.The present invention for prior art sound intermediate frequency adapter there are the defects of improved, simplify the design of audio frequency adaptor, signature apparatus screen display and button and mobile phone screen display words direction are inconsistent caused by solving the problems, such as different handset audio jack position differences simultaneously, realize better user experience.

Description

Electronic signature equipment with rotary audio adapter
Technical field
The present invention relates to application of electronic technology field more particularly to a kind of electronic signatures with rotary audio adapter Equipment.
Background technology
Universal with mobile phone, mobile phone is increasingly becoming electronic equipment indispensable in people's daily life, and mobile phone is not Only means of communication, by mobile phone shopping, transfer accounts, pay the fees, watching video, sending and receiving mail etc. greatly facilitate the life of people Living, at the same time, mobile-phone payment also gradually flourishes.
USBKEY has been mainly used for the safeguard protection of computer e-Bank payment since birth, from generation USBKEY to screen Two generation USBKEY of curtain display and button are the connections realized by USB plug with computer.
Safety to ensure mobile-phone payment has been born audio KEY again, is realized by mobile audio interface with audio KEY's Connection, so as to fulfill the safeguard protection of mobile-phone payment.Currently marketed audio KEY is various informative, and essential characteristic is that not only have There is USB interface to realize the application in PC machine, but also can be by forms such as audio extended line, audio frequency adaptors with sound Frequency interface realizes the connection with mobile phone.
Fig. 1 is audio frequency adaptor of the prior art and the structure diagram of two generation USBKEY.As shown in Figure 1, the electronics Signature device includes two generation USBKEY and audio frequency adaptor.Two generation USBKEY have liquid crystal display, several buttons, mother's USB mouth, Installation safety chip inside two generation USBKEY is used to implement signature, sign test, encryption, decryption operation.Audio frequency adaptor has USB Male mouth, mother's USB mouth, audio jack, power supply module and audio communication module.Audio communication module and audio jack and power supply module The connection of adapter and mobile phone terminal is realized in connection；Power supply module connection audio communication module, the male mouths of USB, mother's USB mouth, realize and supply Electricity Functional；Audio communication module is connect with audio jack, power supply module and USB public affairs mouths, is used to implement digital signal and simulation is believed Number conversion.
When in use, mother's USB cause for gossip of two generation USBKEY of the male mouth connections of the USB of audio frequency adaptor shows audio frequency adaptor and two For the connection of USBKEY；Mother's USB mouth of audio frequency adaptor can realize the connection with computer by USB extended lines, realize audio conversion Connect the charge function of device.It can be as audio KEY by the use of the audio jack connection mobile phone of audio frequency adaptor；With the USB of audio frequency adaptor Female mouth and extended line are connect with PC, realize the application of common two generations USBKEY.But since the audio jack of mobile phone is for all Mobile phone location is not fixed, and some is located at the top of mobile phone, and some is located at bottom, also positioned at mobile phone side, the prior art In USBKEY and audio frequency adaptor be affixed to together by USB, that is, allow to realize USBKEY screens overturning, Marking keys on USBKEY are also fixed, and the user experience thus brought can also be deteriorated.
Invention content
In view of the above-mentioned defects in the prior art, the present invention provides a kind of electronic signature with rotary audio adapter and sets Standby, the electronic signature equipment is two generation USBKEY, including safety chip, liquid crystal display, several buttons and mother's USB mouth, institute It states electronic signature equipment and further includes pogo pin contact points；The audio frequency adaptor includes audio jack, power supply module, audio and leads to Believe module and pogo pin thimbles；Wherein, the pogo pin thimbles on the audio frequency adaptor are set with the electronic signature The standby upper pogo pin contact points correspond, and pass through the company of the pogo pin contact points and the pogo pin thimbles It connects, realizes being electrically connected for the electronic signature equipment and the audio frequency adaptor.
In said program preferably, the safety chip respectively with the liquid crystal display, several buttons, described Mother's USB mouth is connected with the pogo pin contact points.
In said program preferably, the power supply module pushes up respectively with the audio communication module and the pogo pin Needle connects；The audio communication module is connect respectively with the power supply module, the pogo pin thimbles and the audio jack； The pogo pin thimbles are connect respectively with the power supply module and the audio communication module.
In said program preferably, it after the electronic signature equipment is electrically connected with the audio frequency adaptor, realizes anti- To charging, i.e., described electronic signature equipment connects computer by mother's USB mouth, by the electronic signature equipment to the sound Frequency adapter charges.
In said program preferably, the pogo pin contact points expose to the bottom of the electronic signature equipment, institute State the top that pogo pin thimbles expose to the audio frequency adaptor.
In said program preferably, the top of the audio frequency adaptor is equipped with groove, when the pogo pin contact points When being connect with the pogo pin thimbles, the groove, which has, is mechanically fixed effect.
In said program preferably, it is described when the pogo pin contact points are connect with the pogo pin thimbles Mother's USB mouth of electronic signature equipment is exposed.
In said program preferably, the pogo pin thimbles on the audio frequency adaptor and the electronic signature are set The standby upper pogo pin contact points can be that linear type is distributed.
In said program preferably, the pogo pin thimbles on the audio frequency adaptor and the electronic signature are set The standby upper pogo pin contact points can be crossing distribution.
In said program preferably, the pogo pin thimbles on the audio frequency adaptor and the electronic signature are set The standby upper pogo pin contact points can be diagonal distribution.
With respect to existing system, the present invention provides a kind of electronic signature equipment with rotary audio adapter, for Prior art sound intermediate frequency adapter there are the defects of improved, inventive point is through the electronic signature equipment The pogo pin contact points are connect with the pogo pin thimbles of the audio frequency adaptor, realize electronic signature equipment and sound The electrical connection of frequency adapter.The design of audio frequency adaptor is simplified, while solves different handset audio jack position differences and leads The problem of signature apparatus screen display and button of cause and inconsistent mobile phone screen display words direction, realize better user experience.
Description of the drawings
Fig. 1 is audio frequency adaptor of the prior art and the structure diagram of two generation USBKEY.
Fig. 2 is the structure diagram of the electronic signature equipment in the present invention.
Fig. 3 is the structure diagram of the audio frequency adaptor in the present invention.
Fig. 4 is pogo pin thimbles arrangement mode-embodiment one inside heretofore described audio frequency adaptor.
Fig. 5 is pogo pin thimbles arrangement mode-embodiment two inside heretofore described audio frequency adaptor.
Fig. 6 is pogo pin thimbles arrangement mode-embodiment three inside heretofore described audio frequency adaptor.
Specific embodiment
In order to which those skilled in the art is made to more fully understand the present invention program, below in conjunction in the embodiment of the present invention The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing, it is clear that described embodiment is only The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people Member's all other embodiments obtained without making creative work should all belong to the model that the present invention protects It encloses.
The present invention provides a kind of electronic signature equipment with rotary audio adapter, including electronic signature equipment and Rotary audio adapter.
Fig. 2 is the structure diagram of the electronic signature equipment in the present invention.As shown in Fig. 2, wherein, the electronic signature is set It is standby for two generation USBKEY, including safety chip, liquid crystal display, turn over, under turn over, cancel, confirm four buttons and mother's USB mouth, Different from existing two generations USBKEY, the electronic signature equipment replaces USB of the prior art using pogo pin contact points Interface realizes the connection with the audio frequency adaptor.The safety chip is used to implement the operations such as signature, sign test, encryption, decryption Function.The liquid crystal display is for display transaction and operation information.Turn over, under turn over button and can realize that the multipage of screen display information is shown Show；Cancel cancellation of the button for operation, confirm confirmation of the button for operation.The safety chip and the liquid crystal display There is electrical connection with button, mother's USB mouth and pogo pin contact points.When the electronic signature equipment should as common two generation USBKEY Used time, by the way that mother's USB cause for gossip on USB extended lines and electronic signature equipment is existing and the connection of computer.
The pogo pin contact points are connect with the safety chip inside the electronic signature equipment, the pogo Pin contact points are exposed at the bottom of the electronic signature equipment, when itself and the pogo at the top of the audio frequency adaptor , it can be achieved that the electronic signature equipment and the audio frequency adaptor are electrically connected when pin thimbles connect.Compared with the prior art not Together, the two is to realize to be electrically connected by USB interface in the prior art, i.e., general audio frequency adaptor needs have outfit USB Existing being electrically connected with electronic signature equipment of male mouth/mother's cause for gossip.In the present invention, the electronics label are realized by pogo pin technologies Name equipment is electrically connected with the audio frequency adaptor.In addition, pogo pin contact points in the electronic signature device with Mother's USB mouth connection, when pogo pin contact points and the audio frequency adaptor pogo pin of the electronic signature equipment are pushed up When needle connects, reverse charging is realized to the audio frequency adaptor by mother's USB mouth of the electronic signature device.
The audio frequency adaptor of the prior art itself also needs to increase the existing charging work(to audio frequency adaptor of mother's USB cause for gossip Energy.The present invention not only realizes being electrically connected for the electronic signature equipment and the audio frequency adaptor by pogo pin technologies, and also It realizes and computer is connected by mother's USB mouth of the electronic signature equipment, realize the function of charging to the audio frequency adaptor, from And enormously simplify the design of the two.
When the pogo pin contact points are connect with the pogo pin thimbles, the electronic signature equipment it is described Mother's USB mouth is exposed, it is therefore an objective to when mother's USB mouth by the electronic signature equipment is realized reversely to the audio frequency adaptor , need to be exposed by mother's USB mouth during charging, it just can guarantee that mother's USB mouth connect computer, realization pair with USB extended lines in this way The function of the audio frequency adaptor charging.Wherein, so-called reverse charging is female by the shown USB of the electronic signature equipment Mouth connection computer realizes that the charge function of audio frequency adaptor rather than power supply charge directly to audio frequency adaptor.
Electronic signature equipment bottom with the groove at the top of audio frequency adaptor by realizing being mechanically fixed, and pass through it for the two The exposed pogo pin contact points in bottom and the pogo pin in the shown groove at the top of the audio frequency adaptor Thimble contacts, so as to fulfill the electrical connection of the two, and after the two connection, when the audio jack of the audio frequency adaptor connects mobile phone Audio sockets when, the electronic signature equipment can be used as audio shield application.
Fig. 3 is the structure diagram of the audio frequency adaptor in the present invention.As shown in figure 3, the audio frequency adaptor includes sound Frequency plug, power supply module, audio communication module and pogo pin thimbles.Wherein, the power supply module connects the voice communication Module and the pogo pin thimbles realize function of supplying power；The audio communication module and the power supply module and the pogo Pin thimbles connect, and are used to implement the conversion of digital signal and analog signal, the audio communication module connects audio jack, real Now with the communication of mobile phone.
The pogo pin thimbles connect the power supply module and the audio communication module, by with electronic signature equipment On pogo pin contact points connection complete being electrically connected for the rotary audio adapter and electronic signature equipment.
There is groove, the groove has when electronic signature equipment and the audio repeating in the audio frequency adaptor main body Effect is mechanically fixed when device is connect by pogo pin thimbles with pogo pin contact points.
Simultaneously when the audio frequency adaptor and the electronic signature equipment are mechanically fixed, the electronic signature equipment it is described Mother's USB mouth is exposed, ensures that it can connect with external USB extended lines, described so as to fulfill being given by the electronic signature equipment The charging of audio frequency adaptor.
Pogo pin contacts on pogo pin thimbles and the electronic signature equipment on the audio frequency adaptor are one by one It is corresponding.The pogo pin thimbles and the pogo pin contact points may be designed to linear type, cross or diagonal position all Some formal distributions.Wherein, the distribution form that diagonal position has can realize electronic signature equipment and audio frequency adaptor fixed bit The 180 degree overturning put, and cross can realize 360 degree of overturnings, solve signature apparatus caused by the difference of handset audio mouth position The problem of screen display and button and inconsistent mobile phone screen display words direction, improves the Experience Degree of user.
Fig. 4 is pogo pin thimbles arrangement mode-embodiment one inside heretofore described audio frequency adaptor.Such as Fig. 4 institutes Show, the pogo pin thimbles of the audio frequency adaptor are linear type, the pogo pin in the electronic signature equipment Contact point is identical with the pogo pin thimble arrangement modes.
Fig. 5 is pogo pin thimbles arrangement mode-embodiment two inside heretofore described audio frequency adaptor.Such as Fig. 5 institutes Show, the pogo pin thimbles of the audio frequency adaptor are the form that diagonal position has, in the electronic signature equipment The pogo pin contact points are identical with the pogo pin thimble arrangement modes, and are exposed to the bottom of the electronic signature equipment Portion can realize that electronic signature equipment and the 180 degree of audio frequency adaptor link position are overturn.
Fig. 6 is pogo pin thimbles arrangement mode-embodiment three inside heretofore described audio frequency adaptor.Such as Fig. 6 institutes Show, the pogo pin thimbles of the audio frequency adaptor are cross, the pogo pin in the electronic signature equipment Contact point is identical with the pogo pin thimble arrangement modes, and is exposed to the bottom of the electronic signature equipment, can realize Electronic signature equipment and 360 degree of overturnings of audio frequency adaptor link position.
It should be noted that the arrangement mode of the pogo pin thimbles and pogo pin contact points in the present invention includes But it is not limited to the mode of foregoing description.Above example only designing scheme can also be used for Bluetooth adapter or NFC adapters.
It can be seen that through the above technical solutions, the design of audio frequency adaptor is not only simplified, while the design solves Signature apparatus screen display caused by different handset audio jack position differences and button with mobile phone screen display words direction is inconsistent asks Topic, realizes better user experience.
To illustrate technical scheme of the present invention, rather than its limitations；Although the present invention is carried out with reference to the foregoing embodiments Detailed description, it will be understood by those of ordinary skill in the art that：It still can be to the skill recorded in foregoing embodiments Art scheme modifies or carries out equivalent replacement to which part technical characteristic；And these modifications or replacement, do not make phase The essence of technical solution is answered to be detached from the spirit and scope of various embodiments of the present invention technical solution.

Claims (10)

1. a kind of electronic signature equipment with rotary audio adapter, the electronic signature equipment is two generation USBKEY, is wrapped Include safety chip, liquid crystal display, several buttons and mother's USB mouth, which is characterized in that the electronic signature equipment further includes Pogopin contact points；The audio frequency adaptor includes audio jack, power supply module, audio communication module and pogopin thimbles；
Wherein, the pogopin thimbles on the audio frequency adaptor connect with the pogopin in the electronic signature equipment Contact corresponds, and by the connection of the pogopin contact points and the pogopin thimbles, realizes that the electronic signature is set Standby being electrically connected with the audio frequency adaptor.
2. there is the electronic signature equipment of rotary audio adapter as described in claim 1, which is characterized in that the safety Chip is connect respectively with the liquid crystal display, several buttons, mother's USB mouth and the pogopin contact points.
3. there is the electronic signature equipment of rotary audio adapter as described in claim 1, which is characterized in that the power supply Module is connect respectively with the audio communication module and the pogopin thimbles；
The audio communication module is connect respectively with the power supply module, the pogopin thimbles and the audio jack；
The pogopin thimbles are connect respectively with the power supply module and the audio communication module.
4. there is the electronic signature equipment of rotary audio adapter as described in claim 1, which is characterized in that when the electricity After sub- signature device is electrically connected with the audio frequency adaptor, reverse charging is realized, i.e., described electronic signature equipment passes through the USB Female mouth connects computer, is charged by the electronic signature equipment to the audio frequency adaptor.
5. there is the electronic signature equipment of rotary audio adapter as described in claim 1, which is characterized in that described Pogopin contact points expose to the bottom of the electronic signature equipment, and the pogopin thimbles expose to the audio frequency adaptor Top.
6. there is the electronic signature equipment of rotary audio adapter as described in claim 1, which is characterized in that the audio The top of adapter is equipped with groove, and when the pogopin contact points are connect with the pogopin thimbles, the groove has It is mechanically fixed effect.
7. there is the electronic signature equipment of rotary audio adapter as described in claim 1, which is characterized in that when described When pogopin contact points are connect with the pogopin thimbles, mother's USB mouth of the electronic signature equipment is exposed.
8. there is the electronic signature equipment of rotary audio adapter as described in claim 1, which is characterized in that the audio The pogopin contact points on the pogopin thimbles and the electronic signature equipment on adapter are distributed for linear type.
9. there is the electronic signature equipment of rotary audio adapter as described in claim 1, which is characterized in that the audio The pogopin contact points on the pogopin thimbles and the electronic signature equipment on adapter are crossing distribution.
10. there is the electronic signature equipment of rotary audio adapter as described in claim 1, which is characterized in that the sound The pogopin contact points on the pogopin thimbles and the electronic signature equipment on frequency adapter are diagonal distribution.
CN201511032337.1A 2015-12-31 2015-12-31 Electronic signature equipment with rotary audio adapter Active CN105680205B (en)

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CN109193867A (en) * 2018-10-31 2019-01-11 歌尔科技有限公司 A kind of electric energy mould group and electronic equipment
CN112490798B (en) * 2020-11-25 2022-05-17 上海宠济生物科技有限公司 Block chain signature processing device

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CN205318389U (en) * 2015-12-31 2016-06-15 北京华大智宝电子系统有限公司 Electronic signature device with rotation type audio frequency adapter

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CN101453091A (en) * 2007-11-29 2009-06-10 鸿富锦精密工业（深圳）有限公司 Composite audio and electric power switching device and power adapter thereof
CN104167649A (en) * 2014-06-16 2014-11-26 周连惠 Mobile socket with USB interface

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Publication number Priority date Publication date Assignee Title
CN205318389U (en) * 2015-12-31 2016-06-15 北京华大智宝电子系统有限公司 Electronic signature device with rotation type audio frequency adapter

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