CN107194290A - A kind of protection system for docking station USB - Google Patents
A kind of protection system for docking station USB Download PDFInfo
- Publication number
- CN107194290A CN107194290A CN201710368691.4A CN201710368691A CN107194290A CN 107194290 A CN107194290 A CN 107194290A CN 201710368691 A CN201710368691 A CN 201710368691A CN 107194290 A CN107194290 A CN 107194290A
- Authority
- CN
- China
- Prior art keywords
- docking station
- switch chip
- flat board
- interface
- usb
- 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
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
Abstract
The present invention provides a kind of protection system for docking station USB; belong to mobile terminal protection technique field; mainly it is made up of EC control modules, docking station interface, plug detection module, logical transition circuit, cut-off current setting module, switch chip; in based on Intel Atom processor flat board docking stations, the USB interface for being exported to docking station provides protection.Effectively protect flat board mainboard not influenceed by outside docking station abnormal conditions in this way, enhance the reliability and stability of whole system.
Description
Technical field
It is used to expand based on Intel Atom processors flat board the present invention relates to mobile terminal protection technique, more particularly to one kind
Open up depressed place USB protection system.
Background technology
With the birth of mobile terminal, the portable product such as notebook, flat board has obtained constantly developing, and relative table
For the equipment such as face, all-in-one, the extended capability of portable product is limited, and when routine office work field is used, this shortcoming is particularly
It is prominent, and the proposition of docking station can make it that portable product provides more powerful flexible extended capability, while can be effective
Frivolous fuselage is fixed on ground, and what can be consolidated is positioned in desk or other fields of employment.
The addition of docking station enhances flexibility and the scalability of mobile terminal, may be such that the resource of mobile terminal and connects
Mouth more horn of plenty, therefore the reliability of mobile terminal is reduced, therefore while using docking station, should try one's best reduction docking station
Influence of the abnormal conditions to mobile terminal when using.
Therefore it is necessary protection circuit to be added at mobile terminal and its docking station.
The content of the invention
In order to solve the above technical problems, the present invention proposes a kind of be used for based on the extension of Intel Atom processors flat board
Depressed place USB protection system.When abnormal conditions occurs in the docking station of mobile terminal, the related letter of docking station can be cut off in time
Number, while quick can also make corresponding response to sending at mobile terminal at alarm signal, mobile terminal.
The present invention can be used in and be based in Intel Atom processor flat board docking stations, for being connect to the USB that docking station is exported
Mouth provides protection.
The technical scheme is that：
A kind of protection system for docking station USB,
Mainly by EC control modules, docking station interface, plug detection module, logical transition circuit, cut-off current setting module, switch
Chip is constituted；
Wherein, plug detection circuit is used to detect whether flat board docking station is in place；
By logical transition circuit come the Enable Pin of controlling switch chip；
Cut-off current setting module is used for the overcurrent protection value of configuration switch chip,
Docking station interface is used for the connection of flat board and docking station；
EC control modules are used to monitor feedback information.
When docking station is working properly, flat board connects docking station by docking station interface, and mainboard is output to the electricity of docking station
The USB interface that source smoothly reaches docking station by switch chip is powered.
Under normal operation, plug detection module detects docking station and is connected with the docking station interface at flat board end, will
Signal is by being transported to the Enable Pin of switch chip, the usb signal and corresponding power supply of mainboard output after logical transition circuit
Be connected to docking station USB interface by docking station interface, the USB device connected can in current limit value reliablely and stablely work
Make.
When the equipment for being connected to docking station USB interface occurs abnormal, switch chip can cut off the confession of USB interface in time
Electricity, and by the EC control modules of FLAG signal returns to flat board mainboard, EC control module control logic change-over circuits are in abnormal feelings
Condition could drive unlatching switch chip after excluding,
Switch chip feeds back to FLAG signals by docking station interface the EC control modules of flat board mainboard, and EC control modules also can
The Enable Pin of direct roof-cut resistence power supply.
The beneficial effects of the invention are as follows：
The current limit function for the docking station USB interface realized the invention provides platform, is effectively solved in docking station plate
When there are abnormal conditions using USB interface on card and causing excessively stream or short circuit so that mainboard end main power source power down protection, and then lead
The problem of causing system reboot.The addition of plug detection module so that just provide electricity to USB port when docking station contacts good with mainboard
Source, prevents plug so that the problem of output of USB interface power supply is unstable.
Brief description of the drawings
Fig. 1 is the principle schematic of the present invention.
Embodiment
More detailed illustrate is carried out to present disclosure below：
As shown in figure 1,
1st, plug detection module is used to detect whether docking station is connected with flat board, and logical transition circuit is used for driving switch chip
（NCP383）Enable Pin, cut-off current setting module be used for set the maximum current value that USB port can be exported externally, EC control modules
For monitoring feedback information；
2nd, under normal operation, plug detection module detects docking station and is connected with the docking station interface at flat board end, will believe
Number by being transported to the Enable Pin of switch chip, the usb signal and corresponding power supply warp of mainboard output after logical transition circuit
Cross docking station interface and be connected to docking station USB interface, the USB device connected can in current limit value reliablely and stablely work
Make；
3rd, when exception occurs in the equipment for being connected to docking station USB interface（More than the circuit configuration value of switch chip or short circuit）
When, switch chip can cut off the power supply of USB device in time, and FLAG signals are fed back into flat board mainboard by docking station interface
EC control modules, EC control modules also can direct roof-cut resistence power supply Enable Pin, can just be weighed after only abnormal conditions are excluded
Signal and power supply are normally output to docking station by the Enable Pin of new driving switch chip, are farthest reduced docking station and are used
When influence to flat board, enhance the reliability and stability of whole system.
Claims (5)
1. a kind of protection system for docking station USB, it is characterised in that
Mainly by EC control modules, docking station interface, plug detection module, logical transition circuit, cut-off current setting module, switch
Chip is constituted；
Wherein, plug detection circuit is used to detect whether flat board docking station is in place；
By logical transition circuit come the Enable Pin of controlling switch chip；
Cut-off current setting module is used for the overcurrent protection value of configuration switch chip,
Docking station interface is used for the connection of flat board and docking station；
EC control modules are used to monitor feedback information.
2. protection system according to claim 1, it is characterised in that
When docking station is working properly, flat board connects docking station by docking station interface, and mainboard is output to the power supply warp of docking station
Cross switch chip and smoothly reach the USB interface of docking station and be powered.
3. protection system according to claim 2, it is characterised in that
Under normal operation, plug detection module detects docking station and is connected with the docking station interface at flat board end, by signal
By being transported to the Enable Pin of switch chip after logical transition circuit, the usb signal and corresponding power supply of mainboard output pass through
Docking station interface is connected to docking station USB interface, and the USB device connected can reliablely and stablely work in current limit value.
4. protection system according to claim 3, it is characterised in that
When the equipment for being connected to docking station USB interface occurs abnormal, switch chip can cut off the power supply of USB interface in time, and
By the EC control modules of FLAG signal returns to flat board mainboard, EC control module control logic change-over circuits are excluded in abnormal conditions
Unlatching switch chip could be driven afterwards.
5. protection system according to claim 4, it is characterised in that
Switch chip feeds back to FLAG signals by docking station interface the EC control modules of flat board mainboard, and EC control modules also can
The Enable Pin of direct roof-cut resistence power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710368691.4A CN107194290A (en) | 2017-05-23 | 2017-05-23 | A kind of protection system for docking station USB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710368691.4A CN107194290A (en) | 2017-05-23 | 2017-05-23 | A kind of protection system for docking station USB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107194290A true CN107194290A (en) | 2017-09-22 |
Family
ID=59875533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710368691.4A Pending CN107194290A (en) | 2017-05-23 | 2017-05-23 | A kind of protection system for docking station USB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107194290A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666491A (en) * | 2021-01-13 | 2021-04-16 | 联想长风科技(北京)有限公司 | Method and system for detecting docking station of tablet computer |
| CN113672067A (en) * | 2021-08-07 | 2021-11-19 | 东莞市海能电子有限公司 | Lightning docking station interface configuration method and device and lightning docking station |
| CN114815978A (en) * | 2022-04-01 | 2022-07-29 | 深圳市倍思科技有限公司 | Docking station and method for improving compatibility of docking station equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204858518U (en) * | 2015-08-05 | 2015-12-09 | 浪潮集团有限公司 | A protection circuit that is used for portable product docking station power end |
| CN205563450U (en) * | 2016-04-15 | 2016-09-07 | 浪潮集团有限公司 | Realize hot drawing of portable mainboard docking station interface and insert protection circuit of function |
-
2017
- 2017-05-23 CN CN201710368691.4A patent/CN107194290A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204858518U (en) * | 2015-08-05 | 2015-12-09 | 浪潮集团有限公司 | A protection circuit that is used for portable product docking station power end |
| CN205563450U (en) * | 2016-04-15 | 2016-09-07 | 浪潮集团有限公司 | Realize hot drawing of portable mainboard docking station interface and insert protection circuit of function |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666491A (en) * | 2021-01-13 | 2021-04-16 | 联想长风科技(北京)有限公司 | Method and system for detecting docking station of tablet computer |
| CN112666491B (en) * | 2021-01-13 | 2023-08-22 | 联想长风科技(北京)有限公司 | Method and system for detecting docking station of tablet personal computer |
| CN113672067A (en) * | 2021-08-07 | 2021-11-19 | 东莞市海能电子有限公司 | Lightning docking station interface configuration method and device and lightning docking station |
| CN113672067B (en) * | 2021-08-07 | 2022-06-10 | 东莞市海能电子有限公司 | Lightning docking station and configuration device |
| CN114815978A (en) * | 2022-04-01 | 2022-07-29 | 深圳市倍思科技有限公司 | Docking station and method for improving compatibility of docking station equipment |
| CN114815978B (en) * | 2022-04-01 | 2024-02-23 | 深圳市倍思科技有限公司 | Docking station and method for improving compatibility of docking station equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170922 |
|
| RJ01 | Rejection of invention patent application after publication |