CN109918327A - OTG reversely charging electric current improvement method and OTG mobile phone - Google Patents
OTG reversely charging electric current improvement method and OTG mobile phone Download PDFInfo
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- CN109918327A CN109918327A CN201910237328.8A CN201910237328A CN109918327A CN 109918327 A CN109918327 A CN 109918327A CN 201910237328 A CN201910237328 A CN 201910237328A CN 109918327 A CN109918327 A CN 109918327A
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Abstract
The invention is related to a kind of OTG reversely charging electric current improvement method and OTG mobile phone, and wherein OTG reversely charging electric current improvement method is connected with each other main equipment by OTG data line and from equipment the following steps are included: providing, and main equipment is internally provided with OTG circuit；The connection status for changing the signal transmssion line of main equipment, makes main equipment be identified as standard charger from equipment, to improve the charging current that can be obtained from main equipment from equipment；Signal transmssion line with the signal wire in OTG data line for connecting, to transmit identification signal to from equipment.Above-mentioned OTG reversely charging electric current improvement method and OTG mobile phone can change the identification signal for being transmitted to equipment, main device is set to be identified as standard charger from equipment, without being identified as data transmission main equipment, to not limited by usb bus powering mode, so that it is available to sufficiently large charging current from equipment, to accelerate the charging rate from equipment.
Description
The present invention relates to data transmission and charging field more particularly to a kind of OTG reversely charging electric current improvement method and OTG hand
Machine.
Background technique
OTG is the abbreviation of On-The-Go, means that target is direct-connected, applied between a variety of different equipment or mobile device
Connection, to carry out the data exchange between distinct device or mobile device.OTG can be in the case where no Host, and realization is set
Data transmission between standby.Such as digital camera is directly connected on printer, by OTG technology, connects the USB of two equipment rooms
Mouthful, the photograph taken is printed immediately；USB interface can also be sent by OTG by the data in digital camera
On mobile hard disk, field operation is just not necessarily to carry expensive storage card, or one portable computer of back.
By OTG technology, the function of intelligent terminal can be enriched to intelligent terminal expanding USB interface accessory, for example expand
Remote controler accessory is opened up, mobile phone, plate are become universal remote control and used.
The current mobile phone with OTG function also gradually increases.The mobile phone of OTG function is carried in addition to USB flash disk, mouse can be driven
Outside the peripheral hardwares such as mark, keyboard, since the voltage of battery of mobile phone can be raised to 5V or so by OTG circuit, OTG mobile phone also has one
Fixed current driving ability can be also used for other mobile phone reverse chargings.When carrying out reverse phase charging to other mobile phones,
Only need to be equipped with a data wire and an OTG data line.One end of OTG data line connects mobile phone, and one end connects data
The other end of line, data line also connects mobile phone, is achieved in the connection of two mobile phones, and a mobile phone is allowed to carry out another mobile phone
Reverse charging.
However, when mobile phone connects computer or OTG main equipment, since usb protocol provides, in usb bus powering mode
Under, the electric current of the at most available 500mA of the mobile phone being electrically charged.Therefore, the software built in mobile phone being electrically charged can be by charging electricity
Stream is limited within 500mA, even if OTG circuit can export the electric current more than 500mA, actual charging current can not also exceed
500mA.But 500mA is for the charging of normal mobile phone, is very small electric current, charging rate is very slow, seriously affects user
Usage experience.
Summary of the invention
The present invention provides a kind of OTG reversely charging electric current improvement method and OTG mobile phones, and the main equipment can be made to be identified as
Standard charger, thus improve be connected to OTG main equipment slave equipment can reversely charging electric current size, to accelerate from equipment
Charging rate.
In order to solve the above-mentioned technical problems, the present invention provides a kind of OTG reversely charging electric current improvement methods, including following step
It is rapid: to provide main equipment, and the main equipment is internally provided with OTG circuit；Change the connection of the signal transmssion line of the main equipment
State makes the main equipment be identified as standard charger.
Optionally, the signal transmssion line includes D+ signal transmssion line and D- signal transmssion line；Change the main equipment
The connection status of signal transmssion line is the following steps are included: be shorted the D+ signal transmssion line and D- signal transmssion line.
Optionally, electronic switch is provided in the main equipment, the electronic switch includes: first switch, is set to institute
It states on D+ signal transmssion line, for controlling the on-off of the D+ signal transmssion line；Second switch is set to the D- signal and passes
On defeated line, for controlling the on-off of the D- signal transmssion line；Third switch is overlapped on the D+ signal transmssion line and D- letter
Between number transmission line, for controlling the short circuit of the D+ signal transmssion line and D- signal transmssion line；Control the D+ signal transmission
Line and D- signal transmssion line are mutually shorted the following steps are included: opening the first switch and the second switch, and be closed described
Three switches are shorted the D+ signal transmssion line and D- signal transmssion line.
Optionally, further comprising the steps of: it is closed the first switch and the second switch, and opens the third switch,
The D+ signal transmssion line and D- signal transmssion line is connected, to transmit the D+ signal and D- signal in the main equipment, makes
The main equipment is identified as data transmission main equipment.
In order to solve the above-mentioned technical problem, the present invention also provides a kind of OTG mobile phones, comprising: signal transmssion line, for connecting
It is connected to the signal wire of OTG data line, the connection status of the signal transmssion line can be changed, and by changing the signal transmssion line
Connection status, may make the OTG mobile phone to be identified as standard charger, or be identified as data transmission main equipment；It is described
OTG mobile phone further include: switch is set on the signal transmssion line, for controlling the connection status of the signal transmssion line.
Optionally, the signal transmssion line includes D+ signal transmssion line and D- signal transmssion line, described in being connected to
Signal wire in OTG data line, and when the connection status of the change signal transmssion line, the D+ signal transmssion line and D- letter
The connection status of number transmission line is modified.
Optionally, the switch is electronic switch, comprising: first switch is set on the D+ signal transmssion line, is used for
Control the on-off of the D+ signal transmssion line；Second switch is set on the D- signal transmssion line, for controlling the D-
The on-off of signal transmssion line；Third switch, is overlapped between the D+ signal transmssion line and D- signal transmssion line, for controlling
The D+ signal transmssion line and D- signal transmssion line are shorted.
Optionally, the connection status of the signal transmssion line includes: the first switch, second switch opening, and third is opened
It closes and closes, the D+ signal transmssion line and D- signal transmssion line are shorted, and the OTG mobile phone is identified as standard charger.
Optionally, the connection status of the signal transmssion line further include: the first switch, second switch closure, third
Switch is opened, and the OTG mobile phone is identified as data transmission main equipment.
Above-mentioned OTG reversely charging electric current improvement method and OTG mobile phone can change the company of the signal transmssion line of transmission identification signal
Connect state, allow the main equipment that can transmit identification signal, and cannot transmit identification signal two states it
Between switch so that the main equipment from equipment is identified as standard charger and is identified as data transmission master by described
Switch between equipment, can either meet with data-transformation facility, can also have the function of high current reverse charging, without by
The limitation of usb bus powering mode, it is simple and convenient.
Detailed description of the invention
Fig. 1 is the flow chart of OTG reversely charging electric current improvement method in a kind of specific embodiment of the invention.
When Fig. 2 is that the equipment for being internally provided with OTG circuit in a kind of specific embodiment of the invention is connected to from equipment
Schematic diagram.
Fig. 3 is signal transmssion line structural schematic diagram in a kind of specific embodiment of the invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to OTG reversely charging electric current improvement method proposed by the present invention and OTG mobile phone
It is described in further detail.
Referring to Fig. 1, for the flow chart of OTG reversely charging electric current improvement method in a kind of specific embodiment of the invention.
In this specific embodiment, the OTG reversely charging electric current improvement method the following steps are included: S11 provide main equipment,
And the main equipment is internally provided with OTG circuit；S12 changes the connection status of the signal transmssion line of the main equipment, makes described
Main equipment is identified as standard charger.
Referring to Fig. 2, the equipment to be internally provided with OTG circuit in a kind of specific embodiment of the invention be connected to from
Schematic diagram when equipment 204.In this specific embodiment, make the equipment for being internally provided with OTG circuit using following methods
For main equipment 203: the equipment for being internally provided with OTG circuit being made to be connected to the one of ID foot of the OTG data line 201 with ground connection
End.When being internally provided with the equipment of OTG circuit as the main equipment 203, can be connected to by OTG data line 201
The slave equipment 204 of 201 other end of OTG data line transmits data, and reverse charging.
In a specific embodiment, the main equipment 203 includes that PC machine, mobile phone, tablet computer etc. have USB interface
Smart machine, being capable of grafting OTG data line 201.The smart machine has OTG circuit, and the OTG circuit can be lifted institute
The cell voltage of main equipment 203 is stated, and the main equipment 203 is assisted to carry out data transmission and filling to from the reversed of equipment 204
Electricity.
In this specific embodiment, the main equipment 203 and from equipment 204 pass through OTG data line 201 and data line
202 are connected.Wherein, there is the OTG data line 201 one end of the ID foot of ground connection to be connected to the main equipment 203, the other end
It is connected to the data line 202, the other end of the data line 202 is connected to described from equipment 204.
The signal transmssion line of the main equipment 203 includes: D+ signal transmssion line 301 and D- signal transmssion line 302, is used for
It is connected to the signal wire of the OTG data line 201, to transmit data to from equipment 204.Specifically, D+ signal transmssion line 301 connects
It is connected to the D+ signal wire 303 of OTG data line 201, D- signal transmssion line 302 is connected to the D- signal wire of OTG data line 201
304.Also, when D+ signal transmssion line 301 and D- signal transmssion line 302 are connected to the signal wire of the OTG data line 201,
The main equipment 203 will be identified that data transmission set.
When main equipment 203 is identified as data transmission main equipment, the main equipment 203 is described reversed from equipment 204
It is described to receive from equipment 204 due to being identified as data transmission main equipment from equipment 204 by main equipment 203 when charging
The size of the reversely charging electric current arrived is limited by usb bus powering mode, obeys corresponding usb protocol, is less than certain value, i.e.,
500mA.In this way, even if the main equipment 203 is capable of providing the reversely charging electric current beyond 500mA, it is described from equipment 204 also by software
Forbid getting the reversely charging electric current greater than 500mA from the main equipment 203, seriously limits the charging rate from equipment 204.
However, making the D+ signal transmssion line 301 in the connection status for the signal transmssion line for changing the main equipment 203
After being shorted with D- signal transmssion line 302, since data, the master can not be got from main equipment 203 from equipment 204
Equipment 203 will be identified that standard charger.At this point, the size of the reversely charging electric current that can be received from equipment 204 is no longer
It is limited by usb bus powering mode, but can be mentioned according to the actual needs from equipment 204 and the main equipment 203
The electric current of confession determines jointly, therefore, in the case where the main equipment 203 is capable of providing larger reversely charging electric current, from equipment 204
Charging rate greatly promote.
It in a specific embodiment, can be using the method that switch is arranged on the signal transmssion line, Lai Genggai
The connection status of two signal transmssion lines.Since the opening and closing of switch has invertibity, changed by setting switch described
When the connection status of signal transmssion line, the connection status of the signal transmssion line is switching, therefore has the equipment of OTG circuit
It can be identified as standard charger and be identified as free switching between data transmission host two states.
It is signal transmssion line structural schematic diagram in a kind of specific embodiment of the invention please refer to Fig. 3.In the tool
In body embodiment, electronic switch is provided in the main equipment 203, the electronic switch includes: first switch K1, is set to
On the D+ signal transmssion line 301, for controlling the on-off of the D+ signal transmssion line 301；Second switch K2 is set to described
On D- signal transmssion line 302, for controlling the on-off of the D- signal transmssion line 302；Third switch K3, is overlapped on the D+
Between signal transmssion line 301 and D- signal transmssion line 302, for controlling the D+ signal transmssion line 301 and the transmission of D- signal
The short circuit of line 302.It controls the D+ signal transmssion line 301 and D- signal transmssion line 302 is mutually shorted the following steps are included: beating
The first switch K1 and second switch K2 is opened, and is closed the third switch K3, makes the D+ signal transmssion line 301 and D-
Signal transmssion line 302 is shorted, and the main equipment 203 is made to be identified as data transmission main equipment.
The electronic switch refers to the running unit that connecting and disconnecting of the circuit is realized using electronic circuit and power electronic devices, until
It less include a controllable electric drive device, such as thyristor, transistor, field-effect tube, silicon-controlled, relay.Pass through electricity
Stream or voltage drive the electric drive part in the electronic switch to control related circuit on-off.
The OTG reversely charging electric current improvement method is further comprising the steps of: it is closed the first switch K1 and second switch K2,
And the third switch K3 is opened, and the D+ signal transmssion line 301 and D- signal transmssion line 302 is connected, it is described from equipment
204 can receive the data of the transmission of main equipment 203, and the main equipment 203 is identified as data transmission main equipment.
By controlling the open and-shut mode of the first switch K1 to third switch K3, the main equipment 203 can be enabled
Enough it is identified as the data for having reversely charging size of current to limit transmission Host Status, and is identified as no reversely charging size of current limitation
Standard charger state, and free switching between the two states, without changing in itself to the OTG data line 201
It makes.In this specific embodiment, it not only can guarantee the promotion of OTG reverse charging electric current, additionally it is possible to from reverse charging mode
Original data-transmission mode is switched back into, multiple functions are realized using an OTG data line 201, without to the data line
Itself is transformed, simple and convenient.
In a specific embodiment, the control module being connected by one with the electronic switch controls the electricity
The open and-shut mode of sub switch, to control the connection status of the signal data line.The control module is not drawn in the figure.
In a specific embodiment, when using the control module, the control module is with OTG circuit
Equipment detected OTG data line 201 be inserted into, and detect OTG data line 201 ground connection ID pin when starting, the OTG
Circuit also starts at this moment, boosts to the battery of main equipment 203, in a specific embodiment, the booster circuit
The cell voltage of 3.7V or so in main equipment 203 can be risen to 5V or so.
After control module starting, control interface is generated on the display screen of the main equipment 203, user is allowed to select
Whether reverse charging mode is entered.If user's selection enters reverse charging mode, the control module controls the electronic cutting
It puts the corresponding opening and closing operations of row into, is shorted the signal transmssion line, the main equipment 203 is made to be identified as standard charger.
If user's selection does not enter reverse charging mode, the control module controls the electronic switch and carries out corresponding opening and closing behaviour
Making, makes the signal transmssion line that connected state and signal wire be kept to connect one to one, Xiang Suoshu transmits data from equipment 204,
Make it is described the main equipment 203 is identified as data transmission main equipment from equipment 204, it is described at this time from equipment 204 from the master
The reversely charging size of current got at equipment 203 is limited by usb bus powering mode.
In a specific embodiment, the first switch K1 and second switch K2 are normally closed, and third switch K3 is normally opened, because
, when the control module just starts, if user's selection does not enter reverse charging mode, the control module can not also for this
Any operation is carried out to the electronic switch.
In a specific embodiment, the control module further includes to the control of the electronic switch, with OTG
When the equipment of circuit detects that OTG data line 201 is extracted, that is, controls the first switch K1 and second switch K2 and reply normally closed shape
State, third switch K3 reply normally open, so that the work when being inserted into OTG data line 201 next time of the equipment with OTG circuit
It is connected to for data transmission main equipment described from equipment 204.
A kind of OTG mobile phone also provided below, comprising: signal transmssion line, for being connected to the signal wire of OTG data line,
The connection status of the signal transmssion line can be changed, and the connection status by changing the signal transmssion line, may make described
OTG mobile phone is identified as standard charger, or is identified as data transmission main equipment；The OTG mobile phone further include: switch, if
It is placed on the signal transmssion line, for controlling the connection status of the signal transmssion line.
It please refers to Fig.1 to Fig.3, the signal transmssion line includes D+ signal transmssion line 301 and D- signal transmssion line 302, is used
In the signal wire being connected in the OTG data line 201, and when the connection status of the change signal transmssion line, the D+ letter
The connection status of number transmission line 301 and D- signal transmssion line 302 is modified.The switch is electronic switch, comprising: first opens
K1 is closed, is set on the D+ signal transmssion line 301, for controlling the on-off of the D+ signal transmssion line 301；Second switch
K2 is set on the D- signal transmssion line 302, for controlling the on-off of the D- signal transmssion line 302；Third switch
K3 is overlapped between the D+ signal transmssion line 301 and D- signal transmssion line 302, for controlling the D+ signal transmssion line
301 and D- signal transmssion line 302 is shorted.
In a specific embodiment, the connection status of the signal transmssion line includes: the first switch K1, second
Switch K2 is opened, and third switch K3 closure, the D+ signal transmssion line 301 and D- signal transmssion line 302 are shorted, the OTG hand
Machine is identified as standard charger, and the OTG mobile phone is to the reversely charging electric current from equipment 204 not by usb bus powering mode
Limitation, it is described from the charging rate of equipment 204 accelerate.
In a specific embodiment, the connection status of the signal transmssion line further include: the first switch K1,
Two switch K2 closure, third switch K3 open, the OTG mobile phone be identified as data transmit main equipment, it is described from equipment 204 from
The size of the reversely charging electric current obtained at the OTG mobile phone is limited by usb bus powering mode, is in a preset range always
It is interior.In a specific embodiment, the preset range is less than 500mA.
The electronic switch refers to the running unit that connecting and disconnecting of the circuit is realized using electronic circuit and power electronic devices, until
It less include a controllable electric drive device, such as thyristor, transistor, field-effect tube, silicon-controlled, relay.Pass through electricity
Stream or voltage drive the electric drive part in the electronic switch to control related circuit on-off.
By controlling the open and-shut mode of the first switch K1 to third switch K3, the main equipment 203 can be enabled
Enough it is identified as the data for having reversely charging size of current to limit transmission Host Status, and is identified as no reversely charging size of current limitation
Standard charger state, and free switching between the two states, without changing in itself to the OTG data line 201
It makes.In this specific embodiment, it not only can guarantee the promotion of OTG reverse charging electric current, additionally it is possible to from reverse charging mode
Original data-transmission mode is switched back into, multiple functions are realized using an OTG data line 201, without to the OTG data
Line 201 is transformed in itself, simple and convenient.
In fact, other electronic structures can also be arranged in the OTG mobile phone to change the signal transmssion line
Connection status, as long as keeping the change of the connection status of the signal transmssion line reversible.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (9)
1. a kind of OTG reversely charging electric current improvement method, which comprises the following steps:
Main equipment is provided, and the main equipment is internally provided with OTG circuit；
The connection status for changing the signal transmssion line of the main equipment makes the main equipment be identified as standard charger.
2. OTG reversely charging electric current improvement method according to claim 1, which is characterized in that the signal transmssion line includes D+
Signal transmssion line and D- signal transmssion line；Change the connection status of the signal transmssion line of the main equipment the following steps are included:
It is shorted the D+ signal transmssion line and D- signal transmssion line.
3. OTG reversely charging circuit improvement method according to claim 2, which is characterized in that be provided with electricity in the main equipment
Sub switch, the electronic switch include:
First switch is set on the D+ signal transmssion line, for controlling the on-off of the D+ signal transmssion line；
Second switch is set on the D- signal transmssion line, for controlling the on-off of the D- signal transmssion line；
Third switch, is overlapped between the D+ signal transmssion line and D- signal transmssion line, for controlling the D+ signal transmission
The short circuit of line and D- signal transmssion line；
Control the D+ signal transmssion line and D- signal transmssion line be mutually shorted the following steps are included:
The first switch and the second switch is opened, and is closed the third switch, makes the D+ signal transmssion line and D- signal
Transmission line is shorted.
4. OTG reversely charging electric current improvement method according to claim 3, which is characterized in that further comprising the steps of:
It is closed the first switch and the second switch, and opens the third switch, makes the D+ signal transmssion line and D- signal
Transmission line conducting makes the main equipment be identified as data transmission master to transmit the D+ signal and D- signal in the main equipment
Equipment.
5. a kind of OTG mobile phone, comprising:
Signal transmssion line, for being connected to the signal wire of OTG data line, which is characterized in that the connection shape of the signal transmssion line
State can be changed, and the connection status by changing the signal transmssion line, and the OTG mobile phone may make to be identified as standard charging
Device, or it is identified as data transmission main equipment；
The OTG mobile phone further include:
Switch, is set on the signal transmssion line, for controlling the connection status of the signal transmssion line.
6. OTG mobile phone according to claim 5, which is characterized in that the signal transmssion line include D+ signal transmssion line and
D- signal transmssion line, the signal wire for being connected in the OTG data line, and change the connection shape of the signal transmssion line
When state, the connection status of the D+ signal transmssion line and D- signal transmssion line is modified.
7. OTG mobile phone according to claim 6, which is characterized in that the switch is electronic switch, comprising:
First switch is set on the D+ signal transmssion line, for controlling the on-off of the D+ signal transmssion line；
Second switch is set on the D- signal transmssion line, for controlling the on-off of the D- signal transmssion line；
Third switch, is overlapped between the D+ signal transmssion line and D- signal transmssion line, for controlling the D+ signal transmission
Line and D- signal transmssion line are shorted.
8. OTG mobile phone according to claim 7, which is characterized in that the connection status of the signal transmssion line includes:
The first switch, second switch are opened, and third closes the switch, and the D+ signal transmssion line and D- signal transmssion line are short
It connects, the OTG mobile phone is identified as standard charger.
9. OTG mobile phone according to claim 7, which is characterized in that the connection status of the signal transmssion line further include: institute
First switch, second switch closure are stated, third switch is opened, and the OTG mobile phone is identified as data transmission main equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910237328.8A CN109918327A (en) | 2019-03-27 | 2019-03-27 | OTG reversely charging electric current improvement method and OTG mobile phone |
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| CN201910237328.8A CN109918327A (en) | 2019-03-27 | 2019-03-27 | OTG reversely charging electric current improvement method and OTG mobile phone |
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| CN111209237A (en) * | 2019-12-20 | 2020-05-29 | 深圳宝龙达信息技术股份有限公司 | Type-C of optional power supply direction changes Type-C connecting wire |
| CN111245057A (en) * | 2020-03-06 | 2020-06-05 | 维沃移动通信有限公司 | Electronic equipment |
| CN111416403A (en) * | 2020-03-26 | 2020-07-14 | 北京小米移动软件有限公司 | Reverse wired charging circuit, reverse wired charging control method, terminal, and medium |
| CN112928787A (en) * | 2019-12-06 | 2021-06-08 | 北京小米移动软件有限公司 | Charging circuit, electronic equipment, charging control method and device |
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