CN109407814A - The USB peripheral control method and device of mobile terminal - Google Patents
The USB peripheral control method and device of mobile terminal Download PDFInfo
- Publication number
- CN109407814A CN109407814A CN201710691234.9A CN201710691234A CN109407814A CN 109407814 A CN109407814 A CN 109407814A CN 201710691234 A CN201710691234 A CN 201710691234A CN 109407814 A CN109407814 A CN 109407814A
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- Prior art keywords
- mobile terminal
- usb
- peripheral
- peripheral hardware
- usb peripheral
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3215—Monitoring of peripheral devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3278—Power saving in modem or I/O interface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- Telephone Function (AREA)
Abstract
The present invention provides a kind of USB peripheral control method and device of mobile terminal.The USB peripheral control method of mobile terminal provided by the invention, comprising: whether the peripheral hardware that mobile terminal detection is connected by general-purpose serial bus USB is in running order；If the peripheral hardware is in non-working condition, the mobile terminal carries out down the USB peripheral electrically operated, and the mobile terminal enters dormant state.The USB peripheral control method and device of mobile terminal provided by the invention improve the cruising ability of battery of mobile terminal.
Description
Technical field
The present invention relates to technical field of mobile terminals more particularly to the USB peripheral control methods and dress of a kind of mobile terminal
It sets.
Background technique
With the continuous development of mobile terminal technology, mobile terminal can also pass through universal serial bus as computer
(Universal Serial Bus, abbreviation USB) connects peripheral equipment, abbreviation USB peripheral, such as camera, game paddle, mouse
Mark, keyboard etc..Such as private network (police, fire-fighting, airport, harbour, the energy) terminal, due to the needs of industrial application, often
The camera of circumscribed USB type of attachment is needed, to carry out the application such as relevant video record.
When mobile terminal detect USB peripheral connection when, no matter whether USB peripheral uses, mobile terminal can all continue to
USB peripheral power supply, and since the presence of USB peripheral, mobile terminal cannot be introduced into dormant state, lead to standby current of mobile terminal
Increase.These all greatly reduce the cruising ability of battery of mobile terminal, the use of mobile terminal are brought very big
It influences.
Summary of the invention
The embodiment of the present invention provides a kind of USB peripheral control method and device of mobile terminal, is existed with improving mobile terminal
The cruising ability of battery of mobile terminal when connecting USB peripheral.
In a first aspect, the present invention provides a kind of USB peripheral control method of mobile terminal, comprising:
Whether the peripheral hardware that mobile terminal detection is connected by general-purpose serial bus USB is in running order；
If detecting, peripheral hardware is in non-working condition, and mobile terminal carries out down USB peripheral electrically operated, makes mobile terminal
Into dormant state.
Second aspect, the present invention provide a kind of USB peripheral control device of mobile terminal, comprising:
Detection module, it is whether in running order by the peripheral hardware of USB connection for detecting；
Power control module, if detect that USB peripheral is in non-working condition for detection module, to USB peripheral into
It is electrically operated under row, so that mobile terminal enters dormant state.
The present invention provides a kind of USB peripheral control method and device of mobile terminal, by detecting whether USB peripheral is in
Working condition carries out down USB peripheral electrically operated when USB peripheral is in non-working condition, only keeps physical connection, at this time
USB peripheral no longer power consumption, and mobile terminal can enter dormant state in the case where connecting USB peripheral, greatly reduce
The standby current of mobile terminal, so that the cruising ability of battery of mobile terminal is increased dramatically.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of the USB peripheral control method embodiment one of mobile terminal of the present invention；
Fig. 2 is the structural schematic diagram that mobile terminal of the present invention is connect with USB peripheral；
Fig. 3 is the structural schematic diagram of the USB peripheral control device embodiment one of mobile terminal of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is the flow chart of the USB peripheral control method embodiment one of mobile terminal of the present invention, as shown in Figure 1, this implementation
Example method may include:
Whether the peripheral hardware that step 101, mobile terminal detection are connected by general-purpose serial bus USB is in running order；
Mobile terminal includes but is not limited to that private network terminal, public network terminal, tablet computer etc. are powered by battery to power consumption
Control requires stringenter terminal device.USB peripheral includes but is not limited to camera, game paddle, mouse, keyboard, USB flash disk etc.
The peripheral equipment being connect by USB with mobile terminal.
Fig. 2 is the structural schematic diagram that mobile terminal of the present invention is connect with USB peripheral.Wherein, pin D+/D- is usb communication
Data line, VDD/GND is respectively pin of the mobile terminal to USB peripheral power supply.When USB peripheral by USB interface with
When mobile terminal connects, according to the regulation of usb protocol, no matter whether USB peripheral is in running order, and mobile terminal can all continue
USB peripheral is powered, the waste of terminal power is caused.And due to the presence of USB peripheral, cause mobile terminal can not be into
Enter dormant state, causes the increase of standby current of mobile terminal.These all greatly reduce the cruising ability of battery of mobile terminal.
If step 102, USB peripheral are in non-working condition, mobile terminal carries out down electrically operated, movement to USB peripheral
Terminal enters dormant state.
In the embodiment of the present invention, whether mobile terminal detection USB peripheral is in running order, when mobile terminal determines USB
When peripheral hardware is in idle state, then USB peripheral is carried out down electrically operated, only keeps physical connection, USB peripheral is no longer consumed at this time
The electricity of mobile terminal.When only considering influence of the USB peripheral for mobile terminal, after electricity under USB peripheral, mobile terminal can be with
Into dormant state, to reduce the standby current of mobile terminal.
Wherein, mobile terminal usually controls peripheral hardware by application program.When being set as camera outside, in a kind of implementation field
Under scape, needs to be taken pictures using USB camera or when video record, open corresponding application program.Application program is opened
It can detect whether USB camera is in connection status in the process, if USB camera is not connected, user be prompted to be attached；If
USB camera is in connection status, then calls corresponding camera to open function and enable USB camera.Letter is opened in camera
It include the relevant operation powered on to USB camera in number.When application program exits, camera can be called to close function
USB camera is closed, closing in function in camera includes the relevant operation that lower electricity is carried out to USB camera.
Under another implement scene, after application program is opened, a variety of operations is provided a user by interactive interface and are imaged
The option of head, such as: it opens, pause, stop, playback ....Specifically basis is to make in each handling function of camera
Still to be stopped powering on camera the use of camera with camera or the relevant operation of lower electricity.
The present embodiment, it is whether in running order by detection USB peripheral, it is right when USB peripheral is in non-working condition
USB peripheral carries out down electrically operated, only keeps physical connection, at this time USB peripheral no longer power consumption, and mobile terminal can connect
Enter dormant state in the case where USB peripheral, greatly reduce the standby current of mobile terminal, so that battery of mobile terminal is continuous
Boat ability is increased dramatically.
A specific embodiment is used below, and the technical solution of embodiment of the method shown in Fig. 1 is described in detail.
For private network terminal (such as be applied to police, fire-fighting, airport, harbour, energy dedicated network mobile terminal), by
In the needs of industrial application, it is often necessary to the camera of circumscribed USB type of attachment, come carry out it is relevant take pictures, video record etc.
Using.The present embodiment is illustrated so that private network terminal connects USB camera as an example, but does not form limit to application of the invention
System.
After private network terminal connects USB camera, private network terminal can power on USB camera, enumeration operation, to obtain
Take the relevant parameter of USB camera.It will be used to indicate whether USB camera is in connection status in the driving of mobile terminal simultaneously
The first sysfs node be set as connection status.It monitors to indicate whether USB camera is located when framework layers of Android
When the first sysfs node of connection status is connection status, USB camera available event is reported to desktop notification bar；When
One sysfs node is when being not connected to state, to report the unavailable event of USB camera to desktop notification bar.So as to upper layer application journey
Sequence can timely learning USB camera whether be in available mode.
In order to avoid connection USB camera after but for a long time be not used in this case private network terminal to USB camera into
Unnecessary power consumption caused by row power supply, can power on USB camera in private network terminal, enumeration operation, obtain
The relevant parameter of USB camera after reporting USB camera available event, carries out down USB camera electrically operated.
When needing using USB camera, USB camera is enabled by the upper level applications of private network terminal, takes the photograph USB
Picture is in running order.Specific steps include:
When opening needs the upper layer application using USB camera, using meeting detection first for whether indicating USB camera
The state of the first sysfs node in connection status.When being in an off state, application program can prompt user to carry out USB
The connection of camera.When being in connection status, subsequent step is continued to execute.
The camera open function for calling Android framework layers of ExtCamera, to for controlling USB camera
Carry out the 2nd sysfs node write-in 1 of power-on and power-off.When the value of device driver the 2nd sysfs node of reading is 1, USB is taken the photograph
It is OTG mode by HOST pattern switching as head is powered on, enumeration operation, while by private network terminal, so as to private network terminal and USB
Normal data transmission is able to carry out between camera.In order to guarantee USB camera steady operation, to wait after the power-up enough
The long time (such as 3 seconds, the specific waiting time depends on terminal hardware platform).
When not using USB camera, the upper layer application for using USB camera is closed.Using calling Android
The camera release function of framework layers of ExtCamera, to carry out power-on and power-off for controlling USB camera second
Sysfs node write-in 0.When the value of device driver the 2nd sysfs node of reading is 0, lower electricity is carried out to USB camera and is grasped
Make, while being HOST mode by OTG pattern switching by private network terminal.At this point, USB camera no longer power consumption, but also in even
Connect state.
When disconnecting the connection of USB camera and private network terminal, it will be used to indicate whether USB camera is located in device drives
Off-state is set as in the first sysfs node of connection status.It monitors to indicate that USB takes the photograph when framework layers of Android
As head whether be in connection status the first sysfs node be off-state when, report USB camera to unload to desktop notification bar
Event.
The present embodiment is being closed by powering on when opening application program relevant to USB camera to USB camera
Lower electricity is carried out to USB camera when closing application program relevant to USB camera, is realized only when using USB camera pair
It is powered, to the power consumption of private network terminal when eliminating USB idle state.And under the influence of not considering other application,
The connection for keeping USB camera and private network terminal, after electrically operated under being carried out when not using USB camera to it, terminal system
Dormant state can be entered, for the mobile phone hardware platform of present market mainstream, standby current can be reduced from hundred milliamperes of rank
To ten milliamperes of rank, the cruising ability of battery of mobile terminal is substantially increased.
Fig. 3 is the structural schematic diagram of the USB peripheral control device embodiment one of mobile terminal of the present invention, as shown in figure 3, this
The device of embodiment may include: detection module 301 and power control module 302.
Detection module 301: whether in running order by the peripheral hardware of USB connection for detecting；
Power control module 302: when detecting that peripheral hardware is in non-working condition for detection module, USB peripheral is carried out
Under it is electrically operated, mobile terminal enters dormant state.
Optionally, whether the application program that detection module 301 is specifically used for detection USB peripheral opens, if outside using the USB
If application program open, then judge that the USB peripheral is in running order；If the application program using the USB peripheral is turned off,
Then judge that the USB peripheral is in off working state.
Optionally, power control module 302 detects whether be in work by the peripheral hardware of USB connection in detection module 301
Before state, after mobile terminal is connect by USB with the peripheral hardware, USB peripheral is powered on and enumeration operation, to obtain
Take the relevant parameter of USB peripheral.
Optionally, after power control module 302 carries out enumeration operation to USB peripheral, also by mobile terminal by HOST mould
Formula is switched to OTG mode, to can be carried out normal data communication between mobile terminal and USB peripheral.
Optionally, power control module 302 to USB peripheral carry out down it is electrically operated after, also by mobile terminal by OTG mode
It is switched to HOST mode.
The device of the present embodiment can be used for executing the technical solution of above method embodiment, realization principle and technology
Effect is similar, and details are not described herein again.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of USB peripheral control method of mobile terminal characterized by comprising
Whether the peripheral hardware that mobile terminal detection is connected by general-purpose serial bus USB is in running order；
If the peripheral hardware is in non-working condition, the mobile terminal carries out down electrically operated, the movement to the USB peripheral
Terminal enters dormant state.
2. the method according to claim 1, wherein mobile terminal detection is by the peripheral hardware of USB connection
It is no in running order, comprising:
Whether the application program that the mobile terminal detects the peripheral hardware opens；
If the application program is opened, the peripheral hardware is in running order；Alternatively, if the closing application program, it is described
Peripheral hardware is in off working state.
3. method according to claim 1 or 2, which is characterized in that the peripheral hardware that the mobile terminal detection passes through USB connection
Whether it is in running order before, further includes:
After mobile terminal is connect by USB with the peripheral hardware, power on operation is carried out to the USB peripheral；
The mobile terminal carries out enumeration operation to the peripheral hardware, to obtain the relevant parameter of the USB peripheral.
4. according to the method described in claim 3, it is characterized in that, the mobile terminal to the peripheral hardware carry out enumeration operation it
Afterwards, further includes:
The mobile terminal is OTG mode by HOST pattern switching.
5. being grasped the method according to claim 1, wherein the mobile terminal carries out lower electricity to the USB peripheral
After work, further includes:
The mobile terminal is HOST mode by OTG pattern switching.
6. a kind of USB peripheral control device of mobile terminal characterized by comprising
Detection module, it is whether in running order by the peripheral hardware of USB connection for detecting；
Power control module carries out down electrically operated, shifting to the USB peripheral if being in non-working condition for the peripheral hardware
Dynamic terminal enters dormant state.
7. device according to claim 6, which is characterized in that the detection module is specifically used for:
Whether the application program for detecting the peripheral hardware opens；
If the application program is opened, the peripheral hardware is in running order；Alternatively, if the closing application program, it is described
Peripheral hardware is in off working state.
8. device according to claim 6 or 7, which is characterized in that the power control module is specifically also used to:
Before whether detection module detection in running order by the peripheral hardware of USB connection, mobile terminal by USB and
After the peripheral hardware connection, power on operation is carried out to the USB peripheral；
Enumeration operation is carried out to the peripheral hardware, to obtain the relevant parameter of the USB peripheral.
9. device according to claim 8, which is characterized in that the power control module carries out the peripheral hardware to enumerate behaviour
After work, it is also used to:
By mobile terminal by HOST pattern switching be OTG mode.
10. device according to claim 6, which is characterized in that the power control module carries out down the USB peripheral
After electrically operated, it is also used to:
By mobile terminal by OTG pattern switching be HOST mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691234.9A CN109407814A (en) | 2017-08-14 | 2017-08-14 | The USB peripheral control method and device of mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691234.9A CN109407814A (en) | 2017-08-14 | 2017-08-14 | The USB peripheral control method and device of mobile terminal |
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| Publication Number | Publication Date |
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| CN109407814A true CN109407814A (en) | 2019-03-01 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710691234.9A Pending CN109407814A (en) | 2017-08-14 | 2017-08-14 | The USB peripheral control method and device of mobile terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551778A (en) * | 2020-03-20 | 2020-08-18 | 北京元心科技有限公司 | Mobile terminal power consumption debugging method and system and corresponding mobile terminal |
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