CN106295418A - Safety protection equipment, interface and nucleus equipment - Google Patents
Safety protection equipment, interface and nucleus equipment Download PDFInfo
- Publication number
- CN106295418A CN106295418A CN201610649804.3A CN201610649804A CN106295418A CN 106295418 A CN106295418 A CN 106295418A CN 201610649804 A CN201610649804 A CN 201610649804A CN 106295418 A CN106295418 A CN 106295418A
- Authority
- CN
- China
- Prior art keywords
- equipment
- interface
- safety protection
- detecting element
- external equipment
- 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.)
- Pending
Links
Classifications
-
- 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
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/82—Protecting input, output or interconnection devices
- G06F21/85—Protecting input, output or interconnection devices interconnection devices, e.g. bus-connected or in-line devices
-
- 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
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/55—Detecting local intrusion or implementing counter-measures
- G06F21/56—Computer malware detection or handling, e.g. anti-virus arrangements
-
- 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
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/57—Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
- G06F21/577—Assessing vulnerabilities and evaluating computer system security
-
- 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
- G06F21/60—Protecting data
- G06F21/606—Protecting data by securing the transmission between two devices or processes
-
- 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
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
-
- 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
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/81—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer by operating on the power supply, e.g. enabling or disabling power-on, sleep or resume operations
Abstract
The invention provides a kind of safety protection equipment, interface and nucleus equipment.Safety protection equipment of the present invention includes: first interface, the second interface, and is arranged on the power branch between first interface and the second interface and data branch road；First interface is for being connected with external equipment, and the second interface is for being connected with nucleus equipment；Power branch is first interface, the second interface and data branch road provide power supply support；Safety protection equipment also includes: high pressure detecting element and control element；Whether high pressure detecting element exceedes predeterminated voltage for the voltage detecting the external equipment accessing first interface, and when the voltage of external equipment exceedes predeterminated voltage to controlling element transmission triggering signal；Control element and be used for after receiving the triggering signal that high pressure detecting element sends, deenergization branch road.The present invention is it can be avoided that external equipment carries out energy storage and then the impact producing the nucleus equipment accessed or the problem damaged by electrical connection interface.
Description
Technical field
The present invention relates to computer security technique field, be specifically related to a kind of safety protection equipment, interface and nucleus equipment.
Background technology
USB bomb is the physical attacks equipment of a kind of USB flash disk that disguises oneself as, and outward appearance is consistent with common U disk equipment, is difficult to from outward appearance
Upper differentiation.After USB bomb is interconnected by the USB interface of equipment, electric energy can be entered by USB bomb by the USB interface of equipment
Row energy storage, when launching suddenly after the damage capability that energy reaches certain, thus causes the USB interface even mainboard of equipment to receive not
Recoverable destruction.
Current industrial computer equipment and computer equipment mainly use the mode of software in terms of the protection to USB, only
General virus attack can be played protective action, but destructive physical attacks this for USB bomb is invalid.USB
Bomb attacks once success, can cause fatal damage, the most then cause the unrepairable of equipment own the equipment of being hacked, serious
The inefficacy of critical computer network can be caused, have great potential safety hazard to being hacked to design and be hacked network.
Summary of the invention
For defect of the prior art, the invention provides a kind of safety protection equipment, interface and nucleus equipment, this
The safety protection equipment of bright offer, it is possible to avoid external equipment carry out energy storage by electrical connection interface and then the core accessed is set
The standby impact produced or the problem damaged.
First aspect, the invention provides a kind of safety protection equipment, and described safety protection equipment is arranged on core to be accessed
Between external equipment and the nucleus equipment of heart equipment, described external equipment accesses described core by described safety protection equipment and sets
Standby；
Described safety protection equipment includes:
First interface, the second interface, and it is arranged on the power branch between first interface and the second interface and data are propped up
Road；
Wherein, described first interface is for being connected with described external equipment, and described second interface is for setting with described core
Standby connection；Described power branch is described first interface, described second interface and described data branch road provide power supply support；Institute
State data branch road for transmitting relevant data；
Wherein, described safety protection equipment, also include: high pressure detecting element and control element；
Whether described high pressure detecting element exceedes default for the voltage detecting the external equipment accessing described first interface
Voltage, and send triggering signal when the voltage of described external equipment exceedes predeterminated voltage to described control element；
Described control element is for, after receiving the triggering signal that described high pressure detecting element sends, disconnecting described power supply
Branch road.
Further, described safety protection equipment also includes: equipment detecting element in place；
Described equipment detecting element in place, is used for detecting whether described first interface has external equipment to access, and in detection
When accessing described first interface to there being external equipment, send the first control signal to described high pressure detecting element, so that described height
Pressure detecting element proceeds by detection.
Further, described data branch road being additionally provided with data switch, described data switch is first with the detection of described high pressure
Part connects；
Correspondingly, described data switch for detecting the outside accessing described first interface at described high pressure detecting element
The voltage of equipment closes not less than during predeterminated voltage.
Further, described data switch is additionally operable to detect at described high pressure detecting element and accesses described first interface
The voltage of external equipment disconnects when exceeding predeterminated voltage.
Further, described data switch detecting element also in place with described equipment is connected；
Correspondingly, to be additionally operable to detect that external equipment leaves at described equipment detecting element in place described for described data switch
Disconnect during first interface.
Further, described first interface and described second interface are any in USB interface, network interface, serial ports and parallel port
A kind of.
Further, appointing during described nucleus equipment is computer, router, printer, video camera and the network switch
Meaning one.
Further, described external equipment be have energy storage and/or the USB flash disk of attack function, portable hard drive, mobile phone, IPad,
Any one in mouse and keyboard.
Second aspect, present invention also offers a kind of interface, including safety protection equipment as described above.
The third aspect, present invention also offers a kind of nucleus equipment, including safety protection equipment recited above, this core
Being directly connected to of the external equipment of equipment and this nucleus equipment to be accessed.
As shown from the above technical solution, the safety protection equipment that the present invention provides is provided with high pressure detecting element and control
Element, whether described high pressure detecting element exceedes predeterminated voltage for the voltage detecting the external equipment accessing first interface, and
Sending to described control element when voltage at described external equipment exceedes predeterminated voltage and trigger signal, disconnecting so that controlling element
Described power branch, such one is power branch can be avoided to continue as described external equipment continue to provide charge power supply, and two are
Can continue data branch road is powered with halt circuit branch road, make data branch road cannot continue to transmit data.So, external equipment is worked as
When accessing nucleus equipment by this safety protection equipment, this safety protection equipment is it can be avoided that external equipment passes through electrical connection interface
Carry out energy storage and then the impact that the nucleus equipment accessed is produced or the problem damaged.Additionally, the security protection that the present invention provides
Equipment, has independent first interface and the second interface, is conveniently connected with external equipment and nucleus equipment respectively, it is simple to use.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
These accompanying drawings obtain other accompanying drawing.
Fig. 1 is the structural representation of the safety protection equipment that the embodiment of the present invention one provides；
Fig. 2 is the structural representation of the safety protection equipment that the embodiment of the present invention two provides；
Fig. 3 is the structural representation of the safety protection equipment that the embodiment of the present invention three provides；
Fig. 4 is the structural representation of the interface that the embodiment of the present invention four provides；
Fig. 5 is the structural representation of the nucleus equipment that the embodiment of the present invention five provides.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is carried out clear, complete description, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
Fig. 1 shows the structural representation of the safety protection equipment that the embodiment of the present invention one provides, this safety protection equipment
Being arranged between external equipment and the nucleus equipment of nucleus equipment to be accessed, described external equipment is connect by this safety protection equipment
Enter described nucleus equipment；
Seeing Fig. 1, described safety protection equipment includes:
First interface, the second interface, and it is arranged on the power branch between first interface and the second interface and data are propped up
Road；
Wherein, described first interface is for being connected with described external equipment, and described second interface is for setting with described core
Standby connection；Described power branch is described first interface, described second interface and described data branch road provide power supply support；Institute
Stating data branch road for transmitting relevant data, described data branch road can use data wire to realize.
Wherein, described safety protection equipment, also include: high pressure detecting element and control element；
Whether described high pressure detecting element exceedes default for the voltage detecting the external equipment accessing described first interface
Voltage, and send triggering signal when the voltage of described external equipment exceedes predeterminated voltage to described control element；Here, preset
Voltage can be arranged as required to, such as, could be arranged to 6V.Here, show when the voltage of external equipment exceedes predeterminated voltage
External equipment may carry out energy storage by first interface, in order to avoid external equipment energy storage is to setting core the most afterwards
The standby damage caused, now should disconnect described power branch, carry out energy storage to avoid external equipment to continue through first interface.
Correspondingly, described control element, for after receiving the triggering signal that described high pressure detecting element sends, disconnects
Described power branch, carries out energy storage to avoid external equipment to continue through first interface, and halt circuit branch road continues logarithm simultaneously
Power according to branch road, make data branch road cannot continue to transmit data.
Preferably, described high pressure detecting element uses high pressure detection chip to realize；Described control element uses CPU to realize.
Preferably, described first interface and described second interface are any one in USB interface, network interface, serial ports and parallel port
Kind.
Preferably, any during described nucleus equipment is computer, router, printer, video camera and the network switch
A kind of.
Preferably, described external equipment is to have energy storage and/or the USB flash disk of attack function, portable hard drive, mobile phone, IPad, Mus
Mark and keyboard in any one.Such as USB bomb, portable hard drive bomb, mobile bombs etc..
As seen from the above description, the safety protection equipment that the embodiment of the present invention provides is provided with high pressure detecting element and control
Element processed, whether described high pressure detecting element exceedes predeterminated voltage for the voltage detecting the external equipment accessing first interface,
And send triggering signal when the voltage of described external equipment exceedes predeterminated voltage to described control element, break so that controlling element
Opening described power branch, such one is power branch can be avoided to continue as described external equipment continue to provide charge power supply, two
It is can to continue data branch road is powered with halt circuit branch road, makes data branch road cannot continue to transmit data.So, set when outside
For when accessing nucleus equipment by this safety protection equipment, this safety protection equipment is it can be avoided that external equipment is connect by electrical connection
Mouth carries out energy storage and then the impact producing the nucleus equipment accessed or the problem damaged.Additionally, what the embodiment of the present invention provided
Safety protection equipment, has independent first interface and the second interface, is conveniently connected with external equipment and nucleus equipment respectively, just
In use.
In order to improve the service life of high pressure detecting element, it is preferable that see Fig. 2, in the embodiment of the present invention two, described
Safety protection equipment also includes: equipment detecting element in place；
Described equipment detecting element in place, is used for detecting whether described first interface has external equipment to access, and in detection
When accessing described first interface to there being external equipment, send the first control signal to described high pressure detecting element, so that described height
Pressure detecting element proceeds by detection.
In the present embodiment, the equipment that is provided with detecting element in place, only outside equipment detecting element in place has detected
After portion's equipment accesses first interface, just control described high pressure detecting element and proceed by detection, thus avoid high pressure detecting element
It is constantly in opening, and then improves the service life of high pressure detecting element.
In order to be further ensured that nucleus equipment is without damage, in the embodiment of the present invention three, seeing Fig. 3, described data are propped up
Being additionally provided with data switch on road, described data switch is connected with described high pressure detecting element；
Correspondingly, described data switch for detecting the outside accessing described first interface at described high pressure detecting element
The voltage of equipment closes not less than during predeterminated voltage.
In the present embodiment, the setting of described data switch so that whether be normal external equipment at external equipment unconfirmed
It is disconnected the external equipment all attack passages on physical link before, thus has effectively protected and there is the outside threatening characteristic
Equipment is to the attack of nucleus equipment or damage.
In order to prevent control element from occurring, action postpones the timely adverse consequences disconnecting described power branch and cause,
Preferably, seeing Fig. 3, described data switch is additionally operable to outside described high pressure detecting element detects the described first interface of access
The voltage of portion's equipment disconnects when exceeding predeterminated voltage so that data branch road cannot continue to transmit data, so leads to when external equipment
When crossing this safety protection equipment access nucleus equipment, this safety protection equipment can be prevented effectively from the external equipment core to accessing
The impact of equipment generation or damage.
Further, described data switch detecting element also in place with described equipment is connected；
Correspondingly, to be additionally operable to detect that external equipment leaves at described equipment detecting element in place described for described data switch
Automatically disconnect during first interface.
In the present embodiment, when data are transmitted, and turn-off data switch when external equipment is not in place, to disconnect physics
Data cube computation.
The work-based logic of the safety protection equipment that the embodiment of the present invention provides is: when having external equipment by this security protection
After equipment accesses nucleus equipment, the detection of high pressure detection part the voltage of the external equipment accessed is the most legal, if legal warp is true
Admit a fault the external equipment (for example, normal USB flash disk) of threat, then Guan Bi data switch allows normal data transfer, when data pass
It is totally lost into, and turn-off data switch when equipment is in place, to disconnect physical data connection；If it is outside by the detection of high pressure detecting element
The voltage of equipment is higher than Constant numerical values, is to have the external equipment (such as USB bomb) of threat through logic detection, then deenergization props up
Road, stops the power supply to external equipment, and the thermal energy storage process automatically intervening external equipment makes its energy storage not possess destructiveness, and disconnects
Data switch so that attack for external equipment without hardware link.
The embodiment of the present invention is according to the operation principle of the external equipment with energy storage effect, to the normal external equipment that disguises oneself as
Have threaten characteristic external equipment can accomplish automatically to detect and automatic protection, it is possible to effectively detect that there is threat characteristic
The energy storage behavior of external equipment, the most autonomous intervene the early stage thermal energy storage process with the external equipment threatening characteristic, and not
Confirm that whether external equipment is to be disconnected the external equipment all attack passages on physical link before normal external equipment, from
And effectively protected and there is the external equipment threatening characteristic to the attack of nucleus equipment or damage.
The control of the related elements that the present embodiment provides is coordinated to have suffered journey and can be carried out by built-in flush bonding processor
It is uniformly controlled.
Based on identical inventive concept, the embodiment of the present invention four provides a kind of interface, sees Fig. 4, this interface include as
Safety protection equipment described in above example one or two.
The interface provided due to the present embodiment includes the safety protection equipment described in above-described embodiment, therefore has and above-mentioned reality
Executing the technique effect that example is similar, here is omitted.
The interface that the present embodiment provides can be one or more in USB interface, network interface, serial ports, parallel port.
Based on identical inventive concept, the embodiment of the present invention five provides a kind of nucleus equipment, sees Fig. 5, and this core sets
Standby include safety protection equipment as described above, directly connecting of the external equipment of this nucleus equipment and this nucleus equipment to be accessed
Connect.
The nucleus equipment provided due to the present embodiment includes the safety protection equipment described in above-described embodiment, thus have and on
Stating the technique effect that embodiment is similar, here is omitted.
The nucleus equipment provided due to the present embodiment includes the safety protection equipment described in above-described embodiment, therefore is set outside
For being connected by the 3rd extra equipment when accessing this nucleus equipment, (security protection as described in above example one sets again
Standby), but directly external equipment can be accessed this nucleus equipment, even and if external equipment produce big electric current, also will not be to this
Nucleus equipment impacts or damages.
The nucleus equipment that the present embodiment provides can be in computer, router, printer, video camera and the network switch
Any one.
In describing the invention, it should be noted that in this article, the relational terms of such as first and second or the like
It is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply these
Relation or the order of any this reality is there is between entity or operation.And, term " includes ", " comprising " or it is any
Other variants are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment
Not only include those key elements, but also include other key elements being not expressly set out, or also include for this process, side
The key element that method, article or equipment are intrinsic.In the case of there is no more restriction, statement " including ... " limit
Key element, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.This
Connection described in invention can be physical connection, it is also possible to connect for electrical connection or signal.
Above example is merely to illustrate technical scheme, is not intended to limit；Although with reference to previous embodiment
The present invention is described in detail, it will be understood by those within the art that: it still can be to aforementioned each enforcement
Technical scheme described in example is modified, or wherein portion of techniques feature is carried out equivalent；And these are revised or replace
Change, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a safety protection equipment, it is characterised in that described safety protection equipment is arranged on the outside of nucleus equipment to be accessed
Between equipment and nucleus equipment, described external equipment accesses described nucleus equipment by described safety protection equipment；
Described safety protection equipment includes:
First interface, the second interface, and it is arranged on the power branch between first interface and the second interface and data branch road；
Wherein, described first interface is for being connected with described external equipment, and described second interface is for described nucleus equipment even
Connect；Described power branch is described first interface, described second interface and described data branch road provide power supply support；Described number
According to branch road for transmitting relevant data；
Wherein, described safety protection equipment, also include: high pressure detecting element and control element；
Whether described high pressure detecting element exceedes predeterminated voltage for the voltage detecting the external equipment accessing described first interface,
And send triggering signal when the voltage of described external equipment exceedes predeterminated voltage to described control element；
Described control element is for, after receiving the triggering signal that described high pressure detecting element sends, disconnecting described power supply and prop up
Road.
Safety protection equipment the most according to claim 1, it is characterised in that described safety protection equipment also includes: equipment
Detecting element in place；
Described equipment detecting element in place, is used for detecting whether described first interface has external equipment to access, and is detecting
When external equipment accesses described first interface, send the first control signal to described high pressure detecting element, so that the inspection of described high pressure
Survey element and proceed by detection.
Safety protection equipment the most according to claim 1 and 2, it is characterised in that be additionally provided with number on described data branch road
According to switch, described data switch is connected with described high pressure detecting element；
Correspondingly, described data switch for detecting the external equipment accessing described first interface at described high pressure detecting element
Voltage not less than during predeterminated voltage close.
Safety protection equipment the most according to claim 3, it is characterised in that described data switch is additionally operable at described high pressure
Detecting element detects that the voltage of the external equipment accessing described first interface disconnects when exceeding predeterminated voltage.
Safety protection equipment the most according to claim 3, it is characterised in that described data switch is also in place with described equipment
Detecting element connects；
Correspondingly, described data switch is additionally operable to detect that external equipment leaves described first at described equipment detecting element in place
Disconnect during interface.
6. according to the safety protection equipment described in any one of Claims 1 to 5, it is characterised in that described first interface and described
Second interface is any one in USB interface, network interface, serial ports and parallel port.
7. according to the safety protection equipment described in any one of Claims 1 to 5, it is characterised in that described nucleus equipment is for calculating
Any one in machine, router, printer, video camera and the network switch.
8. according to the safety protection equipment described in any one of Claims 1 to 5, it is characterised in that described external equipment is for having
Any one in energy storage and/or the USB flash disk of attack function, portable hard drive, mobile phone, IPad, mouse and keyboard.
9. an interface, it is characterised in that include the safety protection equipment as described in any one of claim 1～8.
10. a nucleus equipment, it is characterised in that include the safety protection equipment as described in any one of claim 1～8, should
Being directly connected to of the external equipment of nucleus equipment and this nucleus equipment to be accessed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649804.3A CN106295418A (en) | 2016-08-09 | 2016-08-09 | Safety protection equipment, interface and nucleus equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610649804.3A CN106295418A (en) | 2016-08-09 | 2016-08-09 | Safety protection equipment, interface and nucleus equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106295418A true CN106295418A (en) | 2017-01-04 |
Family
ID=57667439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610649804.3A Pending CN106295418A (en) | 2016-08-09 | 2016-08-09 | Safety protection equipment, interface and nucleus equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106295418A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034967A (en) * | 2018-01-12 | 2019-07-19 | 克洛纳测量技术有限公司 | System with electric equipment |
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| US20130335865A1 (en) * | 2012-06-19 | 2013-12-19 | Samsung Electronics Co., Ltd | Interface unit having overcurrent and overvoltage protection device |
| CN104065030A (en) * | 2013-03-18 | 2014-09-24 | 宏碁股份有限公司 | Over voltage protection device and method |
| CN105322397A (en) * | 2015-10-13 | 2016-02-10 | 深圳市祝你快乐科技有限公司 | USB port connector with charging protection function and implementation method of USB port connector |
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2016
- 2016-08-09 CN CN201610649804.3A patent/CN106295418A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130335865A1 (en) * | 2012-06-19 | 2013-12-19 | Samsung Electronics Co., Ltd | Interface unit having overcurrent and overvoltage protection device |
| CN104065030A (en) * | 2013-03-18 | 2014-09-24 | 宏碁股份有限公司 | Over voltage protection device and method |
| CN105322397A (en) * | 2015-10-13 | 2016-02-10 | 深圳市祝你快乐科技有限公司 | USB port connector with charging protection function and implementation method of USB port connector |
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| CN110034967A (en) * | 2018-01-12 | 2019-07-19 | 克洛纳测量技术有限公司 | System with electric equipment |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
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| RJ01 | Rejection of invention patent application after publication |