CN102749980B - It is the method and system of external USB equipment charge when USB main equipment is standby - Google Patents
It is the method and system of external USB equipment charge when USB main equipment is standby Download PDFInfo
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Abstract
The present invention disclose a kind of USB main equipment standby time be the method and system of external USB equipment charge, the method includes: whether S01, the USB main equipment of detection holding state access external USB equipment；S02, as access external USB equipment, then export external USB equipment charging voltage；Go to step S03；Whether S03, detection external USB equipment are rechargeable devices；S04, it is rechargeable devices such as external USB equipment, is external USB equipment charge by the charging voltage utilized in step S02.Present invention achieves USB main equipment standby time be the function of external USB equipment charge.
Description
Technical field
The present invention relates to USB interface device technical field, particularly relate to when a kind of USB main equipment is standby be
The method and system of external USB equipment charge.
Background technology
Function along with the portable electrical equipment (such as mobile phone, MP4 etc.) supporting USB interface charging
From strength to strength, its power consumption also gets more and more so that user needs it portable every now and then
Electrical equipment carries out electric power and supplements.But, some USB main equipment of the prior art, such as electricity
Depending on machine etc., its power in the standby state the lowest (about 0.3W), so that TV
The USB main equipment such as machine are when standby, and its USB interface cannot use, i.e. can not be at TV
Under the holding state of the USB main equipment such as machine by its USB interface be outside USB device (mobile phone,
MP4 etc.) charging.
Summary of the invention
The main object of the present invention be to provide a kind of USB main equipment standby time be external USB equipment charge
Method, it is intended to be the function of external USB equipment charge when realizing that USB main equipment is standby.
In order to achieve the above object, the present invention is external USB equipment when proposing that a kind of USB main equipment is standby
The method of charging, the method comprises the following steps:
S01: whether the USB main equipment of detection holding state accesses external USB equipment；
S02: as accessed external USB equipment, then export the charging voltage of external USB equipment；Go to step S
03；
S03: whether detection external USB equipment is rechargeable devices；
S04: if external USB equipment is rechargeable devices, will utilize the described charging voltage in step S02
For described external USB equipment charge.
Preferably, described step S02 particularly as follows:
As accessed external USB equipment, then export the system principal voltage of USB main equipment, and by described system
Principal voltage is converted to the charging voltage of described external USB equipment and exports；Meanwhile, USB master is disconnected
Equipment
The output of the various running voltages of start.
Preferably, described step S03 particularly as follows:
The supply voltage of the USB interface of detection USB main equipment, if the supply voltage of described USB interface is more than
Preset voltage value, the most described external USB equipment is rechargeable devices.
Preferably, also include after described step S04:
Step S05: whether detection external USB equipment charges the fullest；
Step S06: if charging is the fullest, then disconnect the output of the system principal voltage of USB main equipment, terminates
The charging process of described external USB equipment.
Being the system of external USB equipment charge when the present invention also proposes that a kind of USB main equipment is standby, this is
System includes that power module, the first voltage changer module, equipment access detection module, filling apparatus
Electro-detection module, master control IC module and USB interface, wherein:
Described power module, is used for exporting system principal voltage；
Described first voltage changer module, turns for the system principal voltage exported by described power module
It is changed to the charging voltage of external USB equipment and exports；
Described equipment accesses detection module, is used for detecting in described USB interface whether accessed external USB
Equipment, has external USB equipment if accessing, then output the first detection signal is to master control IC module；
Described equipment charge detection module, is used for detecting whether described external USB equipment is rechargeable devices
If rechargeable devices, then output the second detection signal gives described master control IC module；
Described master control IC module, for according to described first detection signal, output is corresponding respectively controls
Signal, to power module and the first voltage changer module, controls described power module output system
Principal voltage, and control described first voltage changer module described system principal voltage is converted to
The charging voltage of external USB equipment also exports；And according to described second detection signal, control institute
The described charging voltage stating the first voltage changer module output is described external USB equipment charge；
Described USB interface, is used for accessing external USB equipment.
Preferably, also include:
Second voltage changer module, is converted to for the system principal voltage exported by described power module
Various running voltages required during the start of described USB main equipment.
Preferably, described master control IC module is additionally operable to:
According to described first detection signal, export corresponding control signal to described second voltage changer
Mould
Block, closes described second voltage changer module, disconnects the various work of USB main equipment start
The output of voltage.
Preferably, described equipment charge detection module specifically for:
Detect the supply voltage of described USB interface, if described supply voltage is more than preset voltage value, the most defeated
Go out the second detection signal to described master control IC module.
Preferably, described equipment charge detection module is additionally operable to:
Detect whether described external USB equipment charges the fullest, if charging is the fullest, then output the 3rd detection letter
Number give described master control IC module.
Preferably, described master control IC module is additionally operable to:
According to described 3rd detection signal, export corresponding control signal to described power module, disconnection
The output of described power module system principal voltage.
The USB main equipment of present invention proposition is the method for external USB equipment charge time standby, first detects
Whether USB main equipment has accessed external USB equipment, if detecting, USB main equipment access has outside U
SB equipment, then export the charging voltage of external USB equipment；Then detection USB main equipment is accessed
External USB equipment whether be rechargeable devices, if the external USB equipment that USB main equipment is accessed
Be rechargeable devices, then before utilizing, the charging voltage of output is external USB equipment charge.This
Bright achieve USB main equipment standby time be the function of external USB equipment charge.
Accompanying drawing explanation
Fig. 1 be USB main equipment of the present invention standby time be the method first embodiment of external USB equipment charge
Schematic flow sheet；
Fig. 2 be USB main equipment of the present invention standby time be method second embodiment of external USB equipment charge
Schematic flow sheet；
Fig. 3 be USB main equipment of the present invention standby time be the system preferred embodiment of external USB equipment charge
Structured flowchart；
Fig. 4 be USB main equipment of the present invention standby time be external USB equipment charge system preferred embodiment in
Equipment accesses the circuit structure diagram of detection module；
Fig. 5 be USB main equipment of the present invention standby time be external USB equipment charge system preferred embodiment in
The circuit structure diagram of equipment charge detection module.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings into one
Step explanation.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with Figure of description and specific embodiment.Should
Working as understanding, specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
Fig. 1 be USB main equipment of the present invention standby time be the method first embodiment of external USB equipment charge
Schematic flow sheet.
With reference to Fig. 1, it is that the method for external USB equipment charge includes following when USB main equipment of the present invention is standby
Step:
S01: whether the USB main equipment of detection holding state accesses external USB equipment；
S02: as accessed external USB equipment, then export the charging voltage of external USB equipment；Go to step S
03；
Specifically, if step S01 detects USB main equipment, access has external USB equipment, then export USB
The system principal voltage of main equipment, and outside being converted to be accessed by the system principal voltage of USB main equipment
The charging voltage of portion's USB device also exports；Meanwhile, the various works of USB main equipment start are disconnected
Make the output of voltage, so that other operational modules of USB main equipment start do not work, with
Reduce power consumption.
Step S03: whether detection external USB equipment is rechargeable devices；
Specifically, the embodiment of the present invention by the supply voltage of USB interface of detection USB main equipment, with
Realize the purpose whether detection USB main equipment accessed external USB equipment be rechargeable devices, if
The supply voltage of the USB interface of USB main equipment is more than preset voltage value, then external USB equipment is can
Charger.
Step S04: if external USB equipment is rechargeable devices, then utilize the described charging in step S02
Voltage is described external USB equipment charge.
The USB main equipment of present invention proposition is the method for external USB equipment charge time standby, first detects
Whether USB main equipment has accessed external USB equipment, if detecting, USB main equipment access has outside U
SB equipment, then export the charging voltage of external USB equipment；Then detection USB main equipment is accessed
External USB equipment whether be rechargeable devices, if the external USB equipment that USB main equipment is accessed
It is to fill
Electricity equipment, then before utilizing, the charging voltage of output is external USB equipment charge.The present invention realizes
It it is the function of external USB equipment charge when USB main equipment is standby.
With reference to Fig. 2, it is that the method for external USB equipment charge is in step S when USB main equipment of the present invention is standby
After 04, also include:
Step S05: whether detection external USB equipment charges the fullest；
The embodiment of the present invention again may be by the detection of the supply voltage of the USB interface to USB main equipment
, and then detect whether external USB equipment charges the fullest.If the supply voltage of USB interface being detected
Less than a preset voltage value, then external USB equipment charge is the fullest.
Step S06: if charging is the fullest, then disconnect the output of the system principal voltage of USB main equipment, terminates
The charging process of described external USB equipment.
In the present embodiment, if detecting when the external USB equipment charge that USB main equipment is accessed is expired
(i.e. detecting when the supply voltage of USB interface is less than a preset voltage value), then disconnect USB master
The output of the system principal voltage of equipment, terminates the charging process to outside USB device, thus ensures
The present embodiment is that external USB sets when being to complete in the case of lowest power consumption that USB main equipment is standby
Standby charge function.
Being the system of external USB equipment charge when the present invention also proposes that a kind of USB main equipment is standby, Fig. 3 is
It it is the structure of the system preferred embodiment of external USB equipment charge when USB main equipment of the present invention is standby
Block diagram.
With reference to Fig. 3, it is that the system of external USB equipment charge includes power supply when USB main equipment of the present invention is standby
Module the 301, first voltage changer module 302, equipment access detection module 303, equipment charge
Detection module 304, master control IC module 305, USB interface 306 and the second voltage changer module 30
7。
Wherein, the voltage input end of the first voltage changer module 302 and the second voltage changer module
The voltage input end of 307 is all connected with the system principal voltage output pin V1 of power module 301, and first
Enable Pin EN1 of voltage changer module 302 is connected with the I/O3 mouth of master control IC module, the second electricity
Enable Pin EN2 of pressure converter module 307 is connected with the I/O2 mouth of master control IC module, the first voltage
The voltage output end of converter module 302 is connected with USB interface 306；
Equipment accesses the power input of detection module 303 and the standby voltage output pin of power module 301
STB connects, and equipment accesses detection input and the first voltage changer module of detection module 303
302
Voltage output end connect, and be connected with USB interface 306, equipment accesses the inspection of detection module 303
Survey outfan to be connected with the I/O4 mouth of master control IC module 305；
The power input of equipment charge detection module 304 and the standby voltage output pin of power module 301
STB connects, the detection outfan of equipment charge detection module 304 and the I/O of master control IC module 305
5 mouthfuls of connections；
The I/O1 mouth of master control IC module 305 is connected with the ON/OFF foot ON/OFF of power module 301.
Specifically, power module 301 is used for exporting system principal voltage U1 and standby voltage U2.Wherein, treat
Dynamo-electric pressure U2 and all exists under holding state under the open state of USB main equipment；
First voltage changer module 302 is for the system principal voltage U1 conversion exported by power module 301
For the charging voltage of external USB equipment and export；
Equipment accesses detection module 303 and is used for detecting in USB interface 306 the external USB equipment that whether accessed
If detecting to access in USB interface 306 have external USB equipment, then output the first detection signal is given
The I/O4 mouth of master control IC module 305.
Equipment charge detection module 304 is used for detecting whether external USB equipment is rechargeable devices, if inspection
Measuring external USB equipment is rechargeable devices, then output the second detection signal is to master control IC module 3
The I/O5 mouth of 04；
Master control IC module 305 is for according to the first detection signal received by its I/O4 mouth, exporting respectively
Corresponding control signal is to the ON/OFF foot of power module 301 and the first voltage changer module 302
Enable Pin EN1, with control power module 301 system principal voltage output pin V1 export system master
Voltage U1, and control the system that power module 301 is exported by the first voltage changer module 302
Principal voltage U1 is converted to the charging voltage of external USB equipment and exports；Further, master control IC module 3
05, always according to the second detection signal received by its I/O5 mouth, controls the first voltage changer mould
The charging voltage of block 302 output is the external USB equipment charge in USB interface 306；
USB interface 306 is used for accessing external USB equipment (not shown)；
Second voltage changer module 307, turns for system principal voltage U1 exported by power module 301
It is changed to the various running voltages needed for other operational modules during USB main equipment start.
Wherein, above-mentioned master control IC module 305 is additionally operable to:
According to the first detection signal received by its I/O4 mouth, from the corresponding control of its I/O2 mouth output
Enable Pin EN2 of the second voltage changer module 307 that signal is started shooting to USB main equipment, to close
Close the second voltage changer module 307, disconnect the various running voltages of USB main equipment start
Output, from
And other operational modules making USB main equipment start shooting do not work, to reduce power consumption.
The said equipment charging detection module 304 is specifically for detecting the supply voltage of USB interface 306, if inspection
The supply voltage measuring USB interface 306 is more than preset voltage value, then output the second detection signal is given
The I/O5 mouth of master control IC module 305.
The said equipment charging detection module 304 is additionally operable to:
Whether detection external USB equipment charges the fullest, if detecting, charging is the fullest, then output the 3rd detection
Signal is to the I/O5 mouth of master control IC module 305.
Above-mentioned master control IC module 305 is additionally operable to:
The 3rd detection signal received according to its I/O5 mouth, controls letter accordingly from the output of its I/O1 mouth
Number give the ON/OFF foot of power module 301, defeated with deenergization module 301 system principal voltage U1
Go out.
It is that the work process of the system of external USB equipment charge is specifically retouched when USB main equipment of the present invention is standby
State as follows: (1) equipment accesses outside whether detection module 303 detect and accessed in USB interface 306
Portion's USB device, if detecting to access in USB interface 306 have external USB equipment, then exports first
Detection signal is to the I/O4 of master control IC module 305；(2) master control IC module 305 is according to its I/O4 mouth
The first received detection signal, exports corresponding control signal to power supply by its I/O1 mouth
The ON/OFF foot of module 301, exports system principal voltage U1 controlling power module 301, meanwhile,
Master control IC module 305 exports corresponding control signal to the first voltage changer also by its I/O3 mouth
Enable Pin EN1 of module 302, to control the first voltage changer module 302 by power module 301
System principal voltage U1 of output is converted to the charging voltage of external USB equipment.Further, master control IC mould
Block 305 also by its I/O2 mouth export corresponding control signal start shooting to USB main equipment second
Enable Pin EN2 of voltage changer module 307, to close the second voltage changer module 307(i.e.
When second voltage changer module 307 does not export USB main equipment start needed for other operational modules
Various running voltages), to reduce power consumption；(3) equipment charge detection module 304 detects outside
Whether USB device is rechargeable devices, i.e. detects the supply voltage of USB interface 306, if detecting
More than preset voltage value, (i.e. external USB equipment is rechargeable devices to the supply voltage of USB interface 306
Time), then output the second detection signal is to the I/O5 mouth of master control IC module 305；(4) master control IC
Module 305, according to the second detection signal received by its I/05 mouth, controls the first voltage changer
Module 302 exports charging voltage, for the external USB equipment charge in USB interface 306；(5) when
External USB equipment is rechargeable devices when being in charged state, equipment charge detection module 304
Whether detection external USB equipment charges the fullest, if detecting, charging is the fullest, then output the 3rd detection
Signal is to the I/O5 mouth of master control IC module 305；(6) master control IC module 305 is according to its I/O5 mouth
The 3rd received detection signal, exports the corresponding control signal ON/ to power module 301
OFF foot, with the output of deenergization module 301 system principal voltage U1, terminates the first voltage transformation
The device module 302 charging to outside USB device.
The USB main equipment of present invention proposition is the system of external USB equipment charge time standby, passes through equipment
Accessing in detection module detection USB interface and whether accessed external USB equipment, if detecting, USB connects
Access in Kou and have external USB equipment, then output the first detection signal is to master control IC module, master control I
C module, according to the first detection signal, exports corresponding control signal respectively to power module and first
Voltage changer module, controls power module output system principal voltage, and controls the first voltage
The system principal voltage that power module is exported by converter module is converted to the charged electrical of external USB equipment
Press and export.Meanwhile, the present invention is by being accessed in equipment charge detection module detection USB interface
External USB equipment whether be rechargeable devices, if rechargeable devices, then output second detection
Signal according to the second detection signal to master control IC module, master control IC module, controls the first voltage and becomes
The charging voltage of parallel operation module output is external USB equipment charge.Further, connect when master control IC module
When receiving the 3rd detection signal of equipment charge detection module output, then export and control letter accordingly
Number give power module, with the output of deenergization modular system principal voltage, thus ensure that this
Bright is in the case of lowest power consumption, it is achieved be external USB equipment charge when USB main equipment is standby
Function.
Fig. 4 be USB main equipment of the present invention standby time be external USB equipment charge system preferred embodiment in
Equipment accesses the circuit structure diagram of detection module.
In the lump with reference to Fig. 3 and Fig. 4, it is resistance R1 that the equipment in the embodiment of the present invention accesses detection module.
One end of resistance R1 is connected with the standby voltage output pin STB of power module 301, and resistance R1's is another
One end is connected with the I/O4 mouth of master control IC module 305, and respectively with the first voltage changer module 3
The voltage output end of 02 connects and is connected with USB interface 306.Resistance R1 in the embodiment of the present invention
The resistance strengthened for resistance, its resistance is 100K ohm-1M ohm.
In the embodiment of the present invention, when the first voltage changer module 302 is closed, at its voltage output end
In high-impedance state.When USB interface 306 does not accesses external USB equipment, master control IC module 305
The voltage of I/O4 mouth is approximately the standby voltage U2 of power module 301；Have when USB interface 306 accesses
During external USB equipment, owing to the impedance of external USB equipment is relatively low, thus by USB interface 306
Voltage pull-down so that the voltage of the I/O4 mouth of master control IC module 305 is almost 0, i.e. works as USB interface
When in 306, access has external USB equipment, the I/O4 mouth of master control IC module 305 is low level.Work as master
When the I/O4 mouth of control IC module 305 is low level, master control IC module 305 will export from its I/O1 mouth
Corresponding control signal is to the ON/OFF foot of power module 301 and corresponding from the output of its I/O3 mouth
Control signal gives Enable Pin EN1 of the first voltage changer module 302, to control power module 30
1 output system main power source, and control the first voltage changer module 302 by defeated for power module 301
The system principal voltage gone out is converted to the charging voltage needed for external USB equipment.
Fig. 5 be USB main equipment of the present invention standby time be external USB equipment charge system preferred embodiment in
The circuit structure diagram of equipment charge detection module.
In the lump with reference to Fig. 3 and Fig. 5, the equipment charge detection module 304 in the embodiment of the present invention passes for electric current
Sensor, the current sensor that the present embodiment is used is current sensor (this electricity of TMR SOP8
Flow sensor can detect the electric current of 0-500mA under relatively low supply voltage).Wherein, electric current passes
Power supply input pin VCC(the 1st foot of sensor) and the standby voltage output pin STB of power module 301
Connect, its foot of the ground wire GND(the 2nd foot and the 5th foot) ground connection, its voltage output pin OUT(the 6th foot
) be connected with the I/O5 mouth of master control IC module 305.
Above-mentioned current sensor is welded in the output of the first voltage changer module 302 by the embodiment of the present invention
The surface of the PCB trace between end and USB interface 306, by current sensor to above-mentioned PCB
The detection of the electric current (i.e. the charging current of external USB equipment) of cabling, and then detection USB interface
The supply voltage of 306, the supply voltage of the USB interface 306 detected is exported extremely by current sensor
The I/O5 mouth of master control IC module 305.
The embodiment of the present invention, through actual measurement and with reference to relevant standard, is learnt when USB interface 306
In external USB equipment when being rechargeable devices, its charging current (electricity of the most above-mentioned PCB trace
Stream) have to be larger than certain certain value, namely when external USB equipment is rechargeable devices, electric current passes
The voltage (i.e. the supply voltage of USB interface 306) that 6th foot (OUT) of sensor exports must be big
In certain certain value, when this voltage is more than preset voltage value, then USB interface 306 is accessed
External USB equipment is rechargeable devices；Otherwise, then external USB equipment is not rechargeable devices.
When external USB equipment is not rechargeable devices, master control IC module 305 controls corresponding for output
Signal is to power module 301, with the output of deenergization module 301 system principal voltage.
In like manner, the embodiment of the present invention is also electric to the power supply of USB interface 306 by above-mentioned current sensor
The detection of pressure, and then detect whether external USB equipment charges the fullest.Specifically, external USB is worked as
Equipment
When charging is expired, the supply voltage of USB interface 306 reduces to the least amplitude, i.e. master control IC module
The voltage of the I/O5 mouth of 305 reduces to the least amplitude, and now, master control IC module 305 will be the most defeated
Go out corresponding control signal to the ON/OFF foot of power module 301 and the first voltage changer module
Enable Pin EN1 of 302, the output of deenergization module 301 system principal voltage, stop the first voltage
The converter module 302 charging to outside USB device.
In addition, it is necessary to explanation, it is external USB equipment charge when USB main equipment of the present invention is standby
It is external USB equipment that above-described embodiment of system is similarly applied to during USB main equipment open state
The function of charging.
Specifically, with reference to Fig. 3, during USB main equipment start, the embodiment of the present invention is external USB filling apparatus
The process of electricity is described in detail below: (1) equipment accesses detection module 303 and detects USB interface 306
In whether accessed external USB equipment, if detect in USB interface 306 access have external USB to set
Standby, then output the first detection signal is to the I/O4 of master control IC module 305；(2) master control IC module
305 according to the first detection signal received by its I/O4 mouth, corresponding by the output of its I/O3 mouth
Control signal gives Enable Pin EN1 of the first voltage changer module 302, controls the first voltage transformation
System principal voltage U1 that power module 301 is exported by device module 302 is converted to filling of external USB equipment
Piezoelectric voltage when start (USB main equipment, power module 301 exports system principal voltage U1 always) and
Output.Meanwhile, master control IC module 305 can also be by the corresponding display of corresponding I/O mouth output
Signal is to the display of USB main equipment main interface (not shown), the display master of USB main equipment
Interface display user's USB interface 306 accesses and has external USB equipment；(3) equipment charge detection
Module 304 detects whether external USB equipment is rechargeable devices, i.e. detects the electricity of USB interface 306
Source voltage, if detecting, the supply voltage of USB interface 306 is more than preset voltage value (i.e. outside US
When B device is rechargeable devices), then output the second detection signal is to the I/ of master control IC module 305
O5 mouth；(4) master control IC module 305 is according to the second detection signal received by its I/05 mouth,
The charging voltage controlling the first voltage changer module 302 output is the outside U in USB interface 306
SB equipment charge.Meanwhile, master control IC module 305 can also be corresponding by the output of corresponding I/O mouth
The main interface of the display displaying signal to USB main equipment, the main interface display of display of USB main equipment
User's external USB equipment is rechargeable devices；(5) when external USB equipment be rechargeable devices also
When being in charged state, equipment charge detection module 304 detects whether external USB equipment charges
Full, if detecting, charging is the fullest, then output the 3rd detection signal is to the I/O of master control IC module 305
5 mouthfuls；(6) master control IC module 305 is according to the 3rd detection signal received by its I/O5 mouth, defeated
Go out corresponding control signal Enable Pin EN1 to the first voltage changer module 302, terminate first
Voltage changer
The module 302 charging process to outside USB device.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention
, every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion
, or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the present invention's
In scope of patent protection.
Claims (7)
1. a USB main equipment is the method for external USB equipment charge time standby, it is characterised in that
Comprise the following steps:
S00: input system standby voltage accesses detection module to equipment；
S01: whether the USB main equipment being accessed detection module detection holding state by equipment accesses outside
USB device；
S02: as accessed external USB equipment, then export the system principal voltage of USB main equipment, and by institute
The system principal voltage of stating is converted to the charging voltage of described external USB equipment and exports；Meanwhile, USB is disconnected
The output of the various running voltages of main equipment start；
S03: whether detection external USB equipment is rechargeable devices；
S04: if external USB equipment is rechargeable devices, then utilize the described charged electrical in step S02
Pressure is described external USB equipment charge.
Method the most according to claim 1, it is characterised in that described step S03 particularly as follows:
The supply voltage of the USB interface of detection USB main equipment, if the supply voltage of described USB interface
More than preset voltage value, the most described external USB equipment is rechargeable devices.
Method the most according to claim 2, it is characterised in that also include after described step S04:
Step S05: whether detection external USB equipment charges the fullest；
Step S06: if charging is the fullest, then disconnect the output of the system principal voltage of USB main equipment, terminates
The charging process of described external USB equipment.
4. a USB main equipment is the system of external USB equipment charge time standby, it is characterised in that
Detection module, equipment charge detection mould is accessed including power module, the first voltage changer module, equipment
Block, master control IC module and USB interface, wherein:
Described power module, is used for exporting system principal voltage and system standby voltage；
Described first voltage changer module, for the system principal voltage conversion exported by described power module
For the charging voltage of external USB equipment and export；
Second voltage changer module, is converted to institute for the system principal voltage exported by described power module
State various running voltages required during USB main equipment start；
Described equipment accesses detection module, is used for detecting in described USB interface whether accessed external USB
Equipment, has external USB equipment if accessing, then output the first detection signal is to master control IC module；
Described equipment charge detection module, is used for detecting whether described external USB equipment is rechargeable devices,
If rechargeable devices, then output the second detection signal gives described master control IC module；
Described master control IC module, for according to described first detection signal, exporting respectively and control letter accordingly
Number give power module and the first voltage changer module, control described power module output system principal voltage,
And control described first voltage changer module described system principal voltage is converted to external USB equipment
Charging voltage also exports；And according to described second detection signal, control described first voltage changer mould
The described charging voltage of block output is described external USB equipment charge；
Described master control IC module is additionally operable to: according to described first detection signal, export corresponding control signal
To described second voltage changer module, close described second voltage changer module, disconnect USB master and set
The output of the various running voltages of standby start；
Described USB interface, is used for accessing external USB equipment.
System the most according to claim 4, it is characterised in that described equipment charge detection module has
Body is used for:
Detect the supply voltage of described USB interface, if described supply voltage is more than preset voltage value, the most defeated
Go out the second detection signal to described master control IC module.
System the most according to claim 4, it is characterised in that described equipment charge detection module is also
For:
Detect whether described external USB equipment charges the fullest, if charging is the fullest, then output the 3rd detection letter
Number give described master control IC module.
System the most according to claim 6, it is characterised in that described master control IC module is additionally operable to:
According to described 3rd detection signal, export corresponding control signal give described power module, disconnect described electricity
The output of source module system principal voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165067.1A CN102749980B (en) | 2012-05-25 | 2012-05-25 | It is the method and system of external USB equipment charge when USB main equipment is standby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165067.1A CN102749980B (en) | 2012-05-25 | 2012-05-25 | It is the method and system of external USB equipment charge when USB main equipment is standby |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102749980A CN102749980A (en) | 2012-10-24 |
| CN102749980B true CN102749980B (en) | 2016-12-14 |
Family
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| CN103780854B (en) * | 2014-01-06 | 2017-01-25 | 青岛海信电器股份有限公司 | Display device standby realizing method, device and circuit and liquid crystal television |
| CN105490319B (en) * | 2014-09-19 | 2018-11-09 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN106340915B (en) * | 2016-08-24 | 2019-04-09 | 青岛海信电器股份有限公司 | Terminal device |
| CN106602645B (en) * | 2016-12-13 | 2019-04-09 | 上海创功通讯技术有限公司 | Charger |
| CN106959740A (en) * | 2017-03-21 | 2017-07-18 | 联想(北京)有限公司 | A kind of electronic equipment control method and electronic equipment |
| CN108932139A (en) * | 2018-06-21 | 2018-12-04 | Tcl通力电子（惠州）有限公司 | Automatic boot circuit and electronic equipment |
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| CN1313701A (en) * | 2000-03-08 | 2001-09-19 | 日本电气株式会社 | Method and system for connecting mobile telecommunication device with PC computer |
| CN2646930Y (en) * | 2003-09-19 | 2004-10-06 | 逸扬科技股份有限公司 | A power feeding equipment |
| CN102033590A (en) * | 2009-09-27 | 2011-04-27 | 联想(北京)有限公司 | Method, device and data processing equipment for supplying power to communication interface |
| CN102290833A (en) * | 2010-06-17 | 2011-12-21 | 瀚宇彩晶股份有限公司 | Electronic device and charging method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7679316B2 (en) * | 2004-02-17 | 2010-03-16 | Research In Motion Limited | Method and apparatus for controlling a charging state in a mobile electronic device |
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| CN1313701A (en) * | 2000-03-08 | 2001-09-19 | 日本电气株式会社 | Method and system for connecting mobile telecommunication device with PC computer |
| CN2646930Y (en) * | 2003-09-19 | 2004-10-06 | 逸扬科技股份有限公司 | A power feeding equipment |
| CN102033590A (en) * | 2009-09-27 | 2011-04-27 | 联想(北京)有限公司 | Method, device and data processing equipment for supplying power to communication interface |
| CN102290833A (en) * | 2010-06-17 | 2011-12-21 | 瀚宇彩晶股份有限公司 | Electronic device and charging method thereof |
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