CN209402206U - Micro projector - Google Patents
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- CN209402206U CN209402206U CN201920251370.0U CN201920251370U CN209402206U CN 209402206 U CN209402206 U CN 209402206U CN 201920251370 U CN201920251370 U CN 201920251370U CN 209402206 U CN209402206 U CN 209402206U
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Abstract
The utility model relates to a kind of micro projectors, the micro projector includes first port, second port, battery, protocol circuit, charging control circuit, control unit, host system and switching circuit, the micro projector has projection mode and fast charge mode, in the projection mode, for connecting adapter and being charged by the charging control circuit to the battery, which controls the host system and provides the first charging signals to the second port first port；In the fast charge mode, the first port is for connecting adapter and being charged by the charging control circuit to the battery, the second port is connected with the protocol circuit by controlling the switching circuit in the control unit, the control unit controls the first port and provides the second charging signals to the second port, wherein, the external device (ED) for being connected to the second port is greater than the charging rate in the projection mode in the charging rate of the fast charge mode.
Description
Technical field
The utility model relates to a kind of projector, especially a kind of Portable miniature projector.
Background technique
Micro projector on the market at present, smaller, the hand-holdable micro projector such as size, majority is using little Rong
The battery of amount, and the charging input of the bidirectional port of the types such as Type-C is not supported, fast charge mode is not supported yet.In addition, existing
The input port (such as USB port) of micro projector is common to be also only to provide lesser charging current, can not be to the outer of connection
Part device (such as mobile phone input equipment) charging provides enough electric currents, it is necessary to improve.
Utility model content
In view of this, the present invention provides one kind to provide two different charging signals to the external device (ED) of connection
Micro projector.
A kind of micro projector comprising first port, second port, battery, protocol circuit, charging control circuit, control
Unit, host system and switching circuit processed, the first port connect the battery via the charging control circuit, which connects
The first port is connect, which also connect the protocol circuit and the host via the switching circuit respectively with the second port
System, the protocol circuit are also connected with the control unit and the charging control circuit, and the micro projector is with projection mode and fastly
Mold filling formula, in the projection mode, which charges for connecting adapter and passing through the charging control circuit to the battery,
The control unit controls the host system and provides the first charging signals to the second port with to being connected to the outer of the second port
Part device charging；In the fast charge mode, the first port is for connecting adapter and passing through the charging control circuit to the battery
The second port is connected with the protocol circuit by controlling the switching circuit in charging, the control unit, the control unit control
Make the first port to the second port provide the second charging signals with to be connected to the second port external device (ED) charge,
In, the external device (ED) for being connected to the second port is greater than the charging speed in the projection mode in the charging rate of the fast charge mode
Degree.
In one embodiment, which further includes protocol element, which is connected to the first end
Between mouth and the control unit, which states whether first port connects adapter and connect in the first port for identification
Identification signal is sent when connecing adapter to the control unit, which is also used to control the first end according to the identification signal
Mouth is charged by the charging control circuit to the battery.
In one embodiment, which includes the first switch unit and the second switch unit, the protocol circuit
Including the first protocol module and second protocol module, which is connected to first switch unit and the control unit
Between, the second protocol module be connected between second switch unit and the charging control circuit and the second protocol module also
It is electrically connected the control unit, which is electrically connected first protocol module and the host system via first switch unit
System, first switch unit are used for the first port and the host system or first agreement under the control of the control unit
Module conducting, the second port are electrically connected the second protocol module and the host system via second switch unit, this second
Switch unit is for the second port to be connected with the host system or the second protocol module under the control of the control unit.
In one embodiment, in the projection mode, second switch unit is by the second port and the host system
Conducting, the data-signal of the second port are provided to the host system for Projection Display needs via second switch unit；?
The fast charge mode, which the first port is connected with first protocol module so that the control unit is by being somebody's turn to do
First protocol module communicate with the adapter and then the first port receives second charging signals that the adapter provides,
The second port is connected second switch unit with the second protocol module, so that the control unit passes through the second protocol mould
Block and the communication with external apparatus simultaneously control the first port and provide second charging signals to the second port.
In one embodiment, which can be the different charging of protocol type from first protocol module and assists
Discuss circuit, wherein the protocol element can be PD protocol circuit, and such as PD protocol chip, which can be BC1.2
Protocol circuit, such as BC1.2 protocol chip.The second protocol module can be different from the charge protocol type of the first protocol module
QC protocol circuit, such as QC protocol chip.
In one embodiment, which includes first switch and second switch, which is connected to
Between the first port and the charging control circuit, the first port is via the first switch and the charging control circuit to the electricity
Pond charging, the second switch are connected between the second port and first switch, which is electrically connected the first switch
Control terminal second is opened with controlling the conducting of the first switch with ending and be electrically connected the control terminal of the second switch with controlling this
The conducting and cut-off of pass are also provided via the first switch and the second switch in the signal of the fast charge mode first port
To the second port to charge to the external device (ED) for being connected to the second port.
In one embodiment, the micro projector further include third switch, load protection module, the third switch
One end connects the node between the first switch and the second switch, and the other end of third switch connects the host system, should
The control terminal of third switch connects the control unit, which is connected between the host system and the first port
And it is connected between the host system and the second port；It is passed through in the first charging signals of the projection mode, the first port
From the first switch and the third switch to the host system power, the host system via the load protection module to this second
Port provides first charging signals；In the fast charge mode, third switch and the host system are closed, and the of the first port
Two charging signals are provided to the second port via the first switch and the second switch.
In one embodiment, which further includes converting unit, which is connected to the third and opens
It closes between the host system, the first charging signals of the first port are converted into supply voltage via the converting unit, the confession
Piezoelectric voltage is provided to the host system.
In one embodiment, which includes first switch unit, second switch unit and protection electricity
Road, the first switch unit are connected between the first port and the protection circuit, the second switch unit be connected to this second
Between port and the protection circuit, which is electrically connected the first switch unit and the second switch unit also to control this
The conducting and cut-off of first switch unit and the second switch unit, the host system are electrically connected the protection circuit also to control this
Circuit is protected to provide second charging signals to the second port via the second switch unit in the projection mode.
In one embodiment, which further includes the first detection branch and the second detection branch, this first
Detection branch is connected between the first port and the control unit, which is connected to the second port and the control
Between unit processed, the first port which detects according to first detection branch and second detection branch with should
The loading condition of second port controls the first switch, the second switch, the first switch unit, the second switch unit and leads
Logical and cut-off is to control whether to carry out power-off protection to the first port and/or the second port.
In one embodiment, which further includes mode selection switch and ray machine, the mode selection switch
When being turned on, which is received the data-signal of the first port or the second port and is controlled and be somebody's turn to do by the switching circuit
Ray machine carries out Projection Display according to the data-signal of the first port or the second port；When the mode selection switch is closed and
The micro projector enters the fast charge mode, which controls the first port and receive the second charging letter from the adapter
Number, which powers to the battery and the second port.
In one embodiment, which is two directions' inputing/output port, such as can be the end USB Type-C
Mouthful.
In one embodiment, which is output port or data input/output and charging output port, such as
It can be the port USB Type-A.
In one embodiment, which is Portable miniature projector, such as hand-holdable portable minisize
Projector.Compared with prior art, in the micro projector, by the control unit, the protocol circuit, the switching circuit,
The external device (ED) for being connected to the second port is allowed to obtain different charging signals in different modes, to obtain difference
Charging rate, especially under the fast charge mode, the external device (ED) for being connected to the second port can obtain higher charging
Speed meets the needs of external device (ED) quick charge.
Detailed description of the invention
Fig. 1 is the circuitry block schematic diagram of the micro projector of one better embodiment of the utility model.
Fig. 2 is the integrated switch chip that the first switch unit/second switching circuit of micro projector shown in Fig. 1 uses
Structural schematic diagram.
Fig. 3 is the electrical block diagram of the load protection module of micro projector shown in Fig. 1.
Fig. 4 is the flow chart of the charge/discharge control method of micro projector shown in Fig. 1.
The following detailed description will be further explained with reference to the above drawings the utility model.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.
Many details are explained in the following description in order to fully understand the utility model, but this is practical new
Type can also be implemented using other than the one described here other way, and those skilled in the art can be without prejudice to this reality
With doing similar application in the case where novel intension, therefore the utility model is not limited by the specific embodiments disclosed below.
Secondly, the utility model combination schematic diagram is described in detail, when the utility model embodiment is described in detail, for convenient for
Illustrate, indicates that the sectional view of device architecture can disobey general proportion and make partial enlargement, and the schematic diagram is example, herein
The range of the utility model protection should not be limited.In addition, the three-dimensional space of length, width and depth should be included in actual fabrication
Size.
It is described in detail below by embodiment.
Referring to Fig. 1, Fig. 1 is the circuitry block schematic diagram of the micro projector of one better embodiment of the utility model.
The micro projector 100 can be Portable miniature projector, such as the lesser hand holding type miniature micro projector of size comprising
First port 101, second port 102, battery 107, protocol circuit 104, protocol element 121, charging control circuit 106, control
Unit 105, host system 108, switching circuit 103, first switch 111, second switch 112, third switch 113, load protection
120 first switch unit of module, 114 second switch unit 115, converting unit 117 and mode selection switch 109 and ray machine 110.
The switching circuit 103 includes the first switch unit 103a and the second switch unit 103b, which includes the first agreement
Module 104a and second protocol module 104b.
The first port 101 can be the port USB Type-C, but be not limited to the port USB Type-C, or other
Two directions' inputing/output port of type.It is mainly the progress of the port USB Type-C with the first port 101 in present embodiment
Explanation.The first port 101 connects the battery 107 via the charging control circuit 106, and the first port 101 is outer for connecting
Part device 130(such as adapter) and charged by the charging control circuit 106 to the battery 107, it will be understood that the first port
101 also can connect other external device (ED)s such as mobile phone, so that the first port 101 also can receive the offer of other external device (ED)s
Data-signal is for Projection Display etc..In present embodiment, which connects the charging control via the first switch 111
Circuit 106 processed.The control terminal of the first switch 111 is connected to the control unit 105, by the control unit 105 control this first
The conducting and cut-off of switch 111.The first switch 111 can be metal-oxide-semiconductor, but be not limited with metal-oxide-semiconductor.
Further, which also connects the protocol circuit 104 and the host system via the switching circuit 103
System 108, the protocol circuit 104 and the switching circuit 103 are also electrically connected the control unit 105, which is also used to control
The switching circuit 103 is made to control the first port 101 and the host system 108 conducting or the protocol circuit 104 and be connected.This
The external device (ED) 130 that Single port 101 connects can also be communicated via the protocol circuit 104 with the control unit 105 to determine and be somebody's turn to do
Size of the first port 101 from the received charging signals of external device (ED) 130.Specifically, the first port 101 via this first
Switch unit 103a connects the first protocol module 104a and the host system 108, the first protocol module 104a and this first
Switch unit 103a is also electrically connected the control unit 105, which controls the first switch unit 103a to control this
First port 101 is connected with first protocol module 104a or is connected with the host system 108, when the first port 101 and is somebody's turn to do
First protocol module 104a conducting, the external device (ED) of the first port 101 connection is via the first protocol module 104a and the control
The communication of unit 105 processed is to determine size of the first port 101 from received charging signals of devices such as the external device (ED)s 130.Its
In, first protocol module 104a can be the protocol circuit different from 121 protocol type of protocol element, such as BC1.2 agreement electricity
Road is responsible for being connected to the signal communication of the external device (ED) 130 of the first port 101 and the control unit, when signal communication success
Afterwards, which can set the size (size of such as charging current) of charging signals to control charge control electricity
Road 106 receives charging signals of corresponding size from the first port 101 from the external device (ED) 130.
The protocol element 121 is connected to that the external device (ED) 130 of the first port 101 is adapter or other are defeated for identification
Enter device (such as mobile phone), and sends identification signal to the control unit 105.When the external device (ED) for being connected to the first port 101
130 be adapter when, the control unit 105 according to the identification signal control the first port 101 from the external device (ED) 130 receive
Charging signals, and the voltage and current ability that external equipment can provide can be obtained.When being connected to the outer of the first port 101
When part device 130 is the input units such as mobile phone, which can control the first port 101 according to the identification signal
The data-signal for Projection Display is received from the external device (ED) 130, wherein the data-signal for Projection Display can be via this
First switch unit 103a of switching circuit 103 is provided to the host system 108, so that the host system 108 can control
The ray machine 110 carries out Projection Display according to the data-signal for Projection Display of the first port 101.It, should in present embodiment
Protocol element 121 is the charge protocol circuit different from the first protocol module protocol type, wherein the protocol element can be
PD protocol circuit, as the external device (ED) 130 of PD protocol chip, the first port 101 can also carry out fastly with the protocol element 121
Fill the charging signals for communicating the fast charge that the first port 101 in turn can receive adapter offer.
Further, in general, the external device (ED) 130 and the protocol element 121 carry out the priority level of fast charge communication
Higher than the first protocol module 104a and the external device (ED) 130 carries out the priority level of fast charge communication.That is, outside this
When device 130 can carry out fast charge communication with the protocol element 121, it is preferred to use the external device (ED) 130 and the protocol element 121
Between fast charge communication.When the external device (ED) 130 can not carry out fast charge communication and the external device (ED) 130 with the protocol element 121
When can carry out fast charge communication by the first switch unit 103a and the first protocol module 104a, the external device (ED) is just used
Fast charge between 130 and first protocol module 104a communicates.
It is appreciated that the first port 101 may include charging terminal, data terminal and inspection terminal, the charging terminal
The charging control circuit 106 is connected via the first switch 111.The data terminal connects first switch unit 103a, this is detectd
It surveys terminal and connects the protocol element 121.
The second port 102 can be output port or data input/output and charging output port, such as the port USB,
But be not limited to USB port, or other kinds of output port and can play data input/output and charging output
Port.It is mainly that the port USB Type-A is illustrated with the second port 102 in present embodiment.The second port 102
The first port 101 is connected, which is also used to connect the data such as external device (ED) 140(such as mobile phone, USB flash disk input dress
Set) to provide charging signals to from the external device (ED) 140 reception data-signal and to the external device (ED) 140.In present embodiment,
The first port 101 can provide charging signals to the second port 102 with to the external device (ED) for being connected to the second port 102
140 chargings.Specifically, which is connected to the first port via the second switch 112 and the first switch 111
101, which can provide charging letter to the second port 102 via the first switch 111, the second switch 112
Number.The control terminal of the second switch 112 is connected to the control unit 105, controls the second switch 112 by the control unit 105
Conducting and cut-off.The second switch 112 or metal-oxide-semiconductor, but be not limited with above-mentioned.
Further, which also connects the protocol circuit 104 and the host system via the switching circuit 103
System 108, the protocol circuit 104 and the switching circuit 103 are also electrically connected the control unit 105, which is also used to control
Make the switching circuit 103 with control the second port 102 whether with the host system 108 conducting or the protocol circuit 104 be connected,
The second port 102 can also be communicated via the protocol circuit 104 with the control unit 105 to determine that the second port 102 connects
The size of the charging signals of receipts.Specifically, which connects the second protocol mould via second switch unit 103b
Block 104b and the host system 108, the second protocol module 104b and second switch unit 103b are also electrically connected the control list
Member 105, second protocol module 104b is also electrically connected the charging control circuit 106, the control unit 105 can also control this
Two switch unit 103b are connected with to control the second port 102 with second protocol module 104b or are led with the host system 108
Logical, when the second port 102 is connected with second protocol module 104b, which can also be via second switching
The unit 103b and second protocol module 104b is communicated with the control unit 105 to determine the received charging of second port 102
The size of signal.Wherein, second protocol module 104b can be identical as the charge protocol type of the first protocol module 104a
QC protocol circuit, such as QC protocol chip, which is used to be responsible for being connected to the outside of the second port 102
The signal communication of device 140 and the control unit 105, after signal communication success, which can set electric discharge letter
Number size (size of such as discharge voltage and the size of charging current) to control the second port 102 receive it is of corresponding size
Discharge electric signal, and provides electric discharge electric signal of corresponding size to the external device (ED) of the second port 102 140.It is appreciated that should
The charging signals that the discharge signal i.e. second port is provided to the external equipment that is attached to, the of such as above-mentioned second port
Two charging signals or the first charging signals are appreciated that the second port 102 may include charging terminal, data terminal, this is filled
Electric terminal connects the node between the charging control circuit 106 and the first switch 101 via the second switch 112.The data
Terminal connects second switch unit 103b.
Further, the first switch unit 103a and the second switch unit 103b can be using mutually isostructural integrated
Switch chip, referring to Fig. 2, one kind that Fig. 2 is the first switch unit 103a and the second switch unit 103b use is integrated and opened
Close the electrical block diagram of chip.The integrated switch chip includes the first to the tenth pin 1 ~ 10.In first switch unit
In the IC chip of 103a, first pin 1 and second pin 2, should for connecting the data terminal of the first port 101
4th pin 4, the 5th pin 5 are for connecting first protocol module 104a, and the 6th pin 6, the 7th pin 7 are for connecting this
Host system 108, the 8th pin 8, the tenth pin 10 are for connecting the control unit 105, the third pin 3, the 9th pin 9
For accessing operating voltage, wherein for the third pin 3 for being grounded, the 9th pin 9 is used to connect the operating voltage of 3.3V.?
In the IC chip of second switch unit 103b, first pin 1 and second pin 2 are for connecting the second port
102 data terminal, the 4th pin 4, the 5th pin 5 are for connecting second protocol module 104b, the 6th pin 6, the
Seven pins 7 are for connecting the host system 108, and the 8th pin 8, the tenth pin 10 are for connecting the control unit 105, this
Three pins 3, the 9th pin 9 are for accessing operating voltage, and wherein the third pin 3 is for being grounded, and the 9th pin 9 is for connecting
The operating voltage of 3.3V.
Further, one end of the third switch 113 connects the section between the first switch 111 and the second switch 112
The other end of point, the third switch 113 connects the host system 108, the control of the third switch 113 via the converting unit 117
End processed connects the control unit 105, and the charging signals of the first port 101 can be converted into powering via the converting unit 117
Voltage, the supply voltage are provided to the host system 108 and use as power supply, it will be understood that the supply voltage may include
The different size of supply voltage of multichannel, such as 1.2V, 3.3V.The converting unit 117 can be multi-channel DC voltage conversion chip.
The protection circuit 116 can be current protection chip.
The load protection module 120 is connected between the host system 108 and the first port 101 and is connected to the master
Between machine system 108 and the second port 102, which can be via the load protection module 120 to the second end
Mouth 102 provides charging signals, which can also disconnect the second port under the control of control unit 105
Connection between 102 and the host system 108, to achieve the purpose that protect the host system 108.In addition, the load protection mould
Block 120 can also be electrically connected the third switch 113 or the converting unit 117 with from the third switch 113 or the converting unit 117
Supply voltage is received to work.
Specifically, which includes first switch unit 114, second switch unit 115 and protection circuit
116.The first switch unit 114 is connected between the first port 101 and the protection circuit 116, the second switch unit 115
It is connected between the second port 102 and the protection circuit 116.
The control unit 105 be also electrically connected the first switch unit 114 and the second switch unit 115 with control this first
The conducting and cut-off of switch unit 114 and the second switch unit 115 are to control whether to the first port 101 and the second end
Mouth 102 carries out over-voltage/overcurrent protections, which can also provide power supplying control signal (such as to the protection circuit 116
POWER Enable signal) with control the protection circuit 116 whether via the second switch unit 115 to the second port 101
Charging signals are provided.In addition, the protection circuit 116 can also provide the letter of feedback overcurrent protection state to the host system 108
Number (such as OCP signal).
The third switch 113 be may be metal-oxide-semiconductor but is not limited with above-mentioned.The first switch unit 114 and this second
Switch unit 115 can be the switch block with multiple switch pipe (such as metal-oxide-semiconductor, triode and/or diode).
Specifically, referring to Fig. 3, Fig. 3 is the electrical block diagram of load protection module 120 shown in FIG. 1.The control
Unit 105 be also electrically connected the first switch unit 114 and the second switch unit 115 with control the first switch unit 114 and
The conducting and cut-off of the second switch unit 115 are to control whether to carry out the first port 101 and the second port 102
Pressure/overcurrent protection, the host system 108 can also provide power supplying control signal (such as POWER Enable to the protection circuit 116
Signal) with control the protection circuit 116 whether via the second switch unit 115 to the second port 101 provide charging signals.
In addition, the protection circuit 116 can also provide the signal (such as OCP signal) of feedback overcurrent protection state to the host system 108.
Specifically, in present embodiment, which is current protection chip, which includes defeated
Enter pin 1, output pin 6, enabled pin 3 and feedback pin 4, the input pin 1 is for connecting the host system 108 to connect
First charging signals (such as Soc 5V) are received, which is used to receive the power supplying control signal of the host system 108 output
First charging signals are exported to the first switch unit 114 and second switch unit 115 to control the output pin 6, this is anti-
Feedback pin 4 is used to feed back the power supply state of the circuit protection chip 116 to the host system 108.
Specifically, which includes that first switching element 114a, second switch element 114b and third are opened
Element 114c is closed, one end of first switching element 114a is mentioned for connecting the protection circuit 116 to receive the protection circuit 116
The first charging signals supplied, the other end of first switching element 114a via second switch element 114b be connected to this first
The control terminal of port 101, first switching element 114a and second switch element 114b are via third switch element 114c
Ground connection, the control terminal of third switch element 114c are connected to the control unit 105, and the control unit 105 is by issuing first
Control signal CTL1 controls the conducting and cut-off of three switch elements 114a, 114b, 114c of the first switch unit 114, with
Control the conducting and cut-off of the first switch unit 114.
The second switch unit 115 includes first switching element 115a, second switch element 115b and third switch element
One end of 115c, first switching element 115a are used to connect the protection circuit 116 to receive the of the protection circuit 116 offer
The other end of one charging signals, first switching element 115a is connected to the second port via second switch element 115b
The control terminal of 102, first switching element 115a and second switch element 115b are grounded via the third switch element 115c,
The control terminal of third switch element 115c is connected to the control unit 105, and the control unit 105 is by issuing the second control letter
The conducting and cut-off that number CTL2 controls three switch elements 115a, 115b and 115c of the second switch unit 115 are to control this
The conducting and cut-off of second switch unit 115.
In present embodiment, first switching element 114a, 115a and second switch element 114b, 115b are metal-oxide-semiconductor,
Such as PMOS, but it is not limited with above-mentioned；The third switch element 114c, 115c can be triode, be not also limited with above-mentioned.
In addition, the first switch unit 114 and the second switch unit 115 can also be according to needing to be arranged current-limiting resistance etc., herein
It does not introduce one by one.
The micro projector 100 further includes the first detection branch 118 and the second detection branch 119, first detection branch
118 are connected between the first port 101 and the control unit 105, which is connected to the second port
Between 102 and the control unit 105, the control unit 105 is according to first detection branch 118 and second detection branch 119
The loading condition of the first port 101 and the second port 102 for detecting controls the first switch 111, the second switch
112, the first switch unit 114, the conducting of the second switch unit 115 and cut-off are to control whether to the first port 101
And/or the second port 102 carries out power-off protection.
The charging control circuit 106 can be charge controlling chip, for realizing the charge and discharge control to the battery 107.
The battery 107 can be lithium battery.The control unit 105 can be microprocessor (such as MCU).
The mode selection switch 109 is electrically connected the control unit 105 and the host system 108, the micro projector 100 tool
There are two kinds of operating modes of projection mode and fast charge mode, the projection mode can be entered by operating the mode selection switch 109
Or the fast charge mode.In one embodiment, which can be physical switches key, and user passes through behaviour
Make physical switches key selection and enters the projection mode or the fast charge mode；In a kind of change embodiment, the model selection
Switching can be virtual switch key, the menu key being such as shown on display screen, touch screen or projection screen, and user passes through
It operates virtual switch key selection and enters the projection mode or the fast charge mode.Wherein, which is turned on
When, which can receive the first port 101 by the switching circuit 103 or the data of the second port 102 are believed
Number and control the ray machine 110 according to the data-signal of the first port 101 or the second port 102 carry out Projection Display.The light
Machine 110 can be laser light machine, such as LCD ray machine, Lcos ray machine or DLP ray machine, and be not limited with above-mentioned.
It is former to the work of the micro projector 100 below in conjunction with two kinds of operating modes of the projection mode and the fast charge mode
Reason, the i.e. charge/discharge control method of micro projector 100 are described briefly.
Referring to Fig. 4, Fig. 4 is the charge/discharge control method of micro projector 100 shown in Fig. 1 comprising following steps.
Step S1, first port connect adapter and are charged by charging control circuit to battery.
Step S2, judges whether the micro projector is in projection mode, if the micro projector is in projection mode,
It executes step S3 and thens follow the steps S4 if the micro projector is not in projection mode.
Step S3, control unit control host system to second port provide the first charging signals with to be connected to this second
The external device (ED) of port charges.
Step S4, the switching circuit that is connected between the second port and protocol circuit of control unit control make this second
Port is connected with the protocol circuit to which the micro projector enters fast charge mode, and the control unit further control this first
Port provides the second charging signals to the second port to charge to the external device (ED) for being connected to the second port, wherein connection
It is greater than the charging rate in the projection mode in the charging rate of the fast charge mode in the external device (ED) of the second port.It can manage
Solution, the external device (ED) for being connected to the second port are greater than the charging speed in the projection mode in the charging rate of the fast charge mode
Degree, that is to say, that the second port is greater than the velocity of discharge in the projection mode in the velocity of discharge of the fast charge mode, so that outside
Part device is very fast in the charging rate of the fast charge mode.Wherein it is possible to understand, in one embodiment, when the model selection is opened
It closes 109 to open, which may be at projection mode, when the mode selection switch 109 closing, the micro projection
Instrument 100 is not in projection mode.
Specifically, step S1, in S2 and S3, which connects the external device (ED) 130, which knows
When the external device (ED) 130 is not adapter, which controls the first port 101 and receives filling for the external device (ED) 130
Electric signal (at this point, the charging signals of the first port 101 are the first charging signals), the charging signals warp of the first port 101
Charge from the first switch 111 and the charging control circuit 106 to the battery 107, the mode selection switch 109 also by operation and
It opens, i.e., the micro projector 100 is in projection mode, which controls the charging control circuit 106 and maintain to receive
First charging signals and charge to the battery 107, the control unit 105 also control the second switch 112 close and this
Three switches 113 are opened, so that first charging signals are provided to the conversion via the first switch 111, the third switch 113
Unit 117, the converting unit 117 are further powered to the host system 108, and the protection circuit 116 is also from the third switch 113
Or the converting unit 117 obtains supply voltage and opens work, the host system 108 to the protection circuit 116 provide with this
The identical charging signals of charging signals size (the first charging signals being referred to as, such as Soc 5V) of Single port 101 simultaneously pass through
Power supplying control signal (POWER Enable signal) control the protection circuit 116 whether by first charging signals be provided to this
One switch unit 114 and second switch unit 115, the control unit 105 further control the second switch unit 115 unlatching,
Such as pass through the CTL2 signal of output second control signal CTL2(such as high level) third switch element 115c conducting is controlled, into
And the control terminal of first switching element 115a and second switch element 115b are grounded and are connected, so that coming from the host system
108 first charging signals are provided to the second port 102 via the protection circuit 116, the second switch unit 115,
External device (ED) 140 that first charging signals are connected to the second port 102 charges, and the control unit 105 can also be according at this time
It is turned on or off according to needing to control the first switch unit 114, such as passes through output first control signal CTL1(such as high level
CTL1 signal) control third switch element 114c, first switching element 114a and second switch element 114b conducting so that
First charging signals from the host system 108 are also provided via the protection circuit 116, the first switch unit 114
To the first port 101；Meanwhile the control unit 105 also controls the second switch unit 103b for the number of the second port 102
It is connected according to terminal and the host system 108, the data-signal of the second port 102 is provided via second switch unit 103b
To the host system 108, the host system 108 further control the ray machine 110 according to the second port 102 data-signal into
Row Projection Display.Wherein, which can be the charging voltage of 5V, and the first port 101 and the second port
102 charging current is about 1A, but is not limited with above-mentioned.
Step S1, in S2 and S4, which connects the external device (ED) 130, which identifies that this is outer
When part device 130 is adapter, which first controls the charging letter that the first port 101 receives the external device (ED) 130
Number (at this point, the charging signals of the first port 101 be the first charging signals), charging signals of the first port 101, via this
First switch 111 and the charging control circuit 106 charge to the battery 107, which closes (i.e. projection
Mode is not opened, which is not in projection mode), which controls first switch unit 103a
The first protocol module 104a and the first port 101 are connected, which also controls second switch unit 103b
The second port 102 is connected with second protocol module 104b, it is logical by the first protocol module 104a and external device (ED) 130
Letter and the second protocol module 104b are communicated with external device (ED) 140, so that the micro projector 100 enters fast charge mode, the control
Unit 105 processed controls the charging control circuit 106 and passes through the first switch 111 and the first port 101 from the external device (ED) 130
Receive the second charging signals, second charging signals also via the first switch 111 and the second switch 112 be provided to this
Two-port netwerk 102 with to be connected to the second port 102 external device (ED) 140 charge, meanwhile, which can also control
The third switch 113 closing is made, which closes, so that the current protection chip 116 is also switched off, the control unit
105 can also export the control terminal control of low level control signal CTL1 and CTL2 to the third switch element 114c and 115c
The third switch element 114c and 115c are closed, and then first switching element 114a, 115a and second switch element 114b,
115 b are also switched off, i.e. first switch unit 114 and the second switch unit 115 is turned off, so that the host system 108
Disconnected via the load protection module 120 with the first port 101 and being electrically connected for second port 102, with prevent this
Single port 101 and the voltage of the second port 102 flow backward to the host system.Wherein, it is connected to the outside of the second port 102
Device 140 is greater than the charging rate in the projection mode in the charging rate of the fast charge mode.Specifically, second charging signals
Can be the charging voltage of 12V, and the charging current of the first port 101 and the second port 102 is about 1.5A, but not with
It is above-mentioned to be limited.
It is appreciated that in one embodiment, when the first protocol module 104a and second protocol module 104b are
The charge protocol circuit of same type, the protocol element 121 are and the first protocol module 104a and second protocol module 104b
When for different types of charge protocol circuit, in the fast charge mode, for guarantee the second charging signals of the first port 101 via
The charging control circuit 106 is to the second charging signals of the battery 107 charging and the first port to the outer of the second port 102
The consistency of part device 140 charging voltage and electric current, even if the external device (ED) 130 and the protocol element 121 carry out fast charge communication
Priority level be higher than the priority level that the first protocol module 104a and the external device (ED) 130 carry out fast charge communication, be preferably also
The first protocol module 104a and the external device (ED) 130 is selected to carry out fast charge communication.
In present embodiment, compared with prior art, in the micro projector 100, by the control unit 105, it is somebody's turn to do
Protocol circuit 104, the switching circuit 103, obtain the external device (ED) for being connected to the second port 102 in different modes
It obtains different charging signals and especially under the fast charge mode, is connected to the second port to obtain different charging rates
102 external device (ED) 140 can obtain higher charging rate, meet the needs of 140 quick charge of external device (ED).In addition,
The load protection module 120 can disconnect the first port 101 and the second port 102 and the host system under fast charge mode
Electrical connection between 108 is led with preventing the voltage of the first port 101 and the second port 102 from flowing backward to the host system 108
The generation for phenomena such as causing the host system 108 to damage.
In one embodiment, which has two kinds of interfaces of USB Type-A and USB Type-C, can
It is used with meeting various scenes used in everyday.
In one embodiment, which supports the two-way fast charge input of USB Type-C, and can be adapted to
The USB Type-C PD agreement of standard, and make user that need not carry two adapters (such as correspondence micro projection
Instrument 100, two adapters of a corresponding external device (ED) 140), since the micro projector 100 can be directly to being connected to this
The external device (ED) 140 of the second port 102 of micro projector 100 provides fast charge input, therefore only needs to carry the micro projection
One adapter of instrument 100 can be realized to the micro projector 100 and 140 quick charge of external device (ED).
In addition, controlling the Combinational Logic Control of the control unit 105 in the micro projector 100, two ends may be implemented
The intelligence of mouth 101 and 102(USB Type-A and USB Type-C) switches, and realizes external device (ED) 140 and the micro projector 100
Data connection and power supply, guarantee the smooth switching of the micro projector 100 and the external device (ED) 140 with screen function.
It should be only above the embodiments of the present invention, therefore it does not limit the scope of the patent of the utility model, all benefits
The equivalent structure or equivalent flow shift made by the utility model specification and accompanying drawing content, is applied directly or indirectly in it
His relevant technical field, is also included in the patent protection scope of the utility model.
Claims (10)
1. a kind of micro projector, it is characterised in that: the micro projector includes first port, second port, battery, agreement electricity
Road, charging control circuit, control unit, host system and switching circuit, the first port are connected via the charging control circuit
The battery, the second port connect the first port, and the first port and the second port also connect via the switching circuit respectively
The protocol circuit and the host system are connect, which is also connected with the control unit and the charging control circuit, the miniature throwing
Shadow instrument has projection mode and fast charge mode,
For connecting adapter and being charged by the charging control circuit to the battery, which is used for the first port
The projection mode controls the host system and provides the first charging signals to the second port with to being connected to the outer of the second port
Part device charging；The control unit is also used to the second port is connected with the protocol circuit by controlling the switching circuit to make
The micro projector enter fast charge mode, the control unit be also used to the fast charge scheme control first port to this second
Port provides the second charging signals to charge to the external device (ED) for being connected to the second port, wherein is connected to the second port
External device (ED) the fast charge mode charging rate be greater than the projection mode charging rate.
2. micro projector as described in claim 1, it is characterised in that: the micro projector further includes protocol element, the association
View unit be connected between the first port and the control unit, the protocol element state for identification first port whether connect it is suitable
Orchestration and the first port connect adapter when send identification signal to the control unit, the control unit be also used to according to should
Identification signal controls the first port and is charged by the charging control circuit to the battery.
3. micro projector as claimed in claim 2, it is characterised in that: the switching circuit includes the first switch unit and second
Switch unit, the protocol circuit include the first protocol module and second protocol module, first protocol module be connected to this first
Between switch unit and the control unit, the second protocol module be connected to second switch unit and the charging control circuit it
Between and the second protocol module be also electrically connected the control unit, the first port via first switch unit be electrically connected this first
Protocol module and the host system, first switch unit are used for the first port and the master under the control of the control unit
Machine system or first protocol module conducting, the second port via second switch unit be electrically connected the second protocol module and
The host system, second switch unit are used for the second port and the host system under the control of the control unit or are somebody's turn to do
The conducting of second protocol module.
4. micro projector as claimed in claim 3, it is characterised in that: second switch unit is also used in the projection mode
The second port is connected with the host system, the data-signal of the second port is provided to the master via second switch unit
Machine system is needed for Projection Display；First switch unit is used to the first port be connected with first protocol module so that should
Control unit carries out communicating the first port by first protocol module and the adapter receives adapter offer
Second charging signals, second switch unit is for the second port to be connected with the second protocol module, so that the control
Unit pass through the second protocol module and the communication with external apparatus and control the first port to the second port provide this second
Charging signals.
5. micro projector as described in claim 1, it is characterised in that: the micro projector includes that first switch is opened with second
Close, which is connected between the first port and the charging control circuit, the first port via the first switch and
The charging control circuit charges to the battery, which is connected between the second port and first switch, the control list
The control terminal of the member electrical connection first switch is to control the conducting of the first switch and end and be electrically connected the second switch
Control terminal is to control the conducting and cut-off of the second switch, in the fast charge mode first port also via the first switch and should
Second switch is provided to the second port to charge to the external device (ED) for being connected to the second port.
6. micro projector as claimed in claim 5, it is characterised in that: the micro projector further includes third switch, load
Protective module, one end of third switch connect the node between the first switch and the second switch, which switchs another
One end connects the host system, and the control terminal of third switch connects the control unit, which is connected to the master
Between machine system and the first port and it is connected between the host system and the second port；The first of the first port is filled
Electric signal is also used in the projection mode and switchs via the first switch and the third to host system power supply, and the host system is also
For providing first charging signals to the second port via the load protection module in the projection mode；The third switch and
The host system is also used to close in the fast charge mode, and the second charging signals of the first port are also used to pass through in the fast charge mode
The second port is provided to by the first switch and the second switch；The micro projector further includes converting unit, the conversion
Unit is connected between third switch and the host system, and the first charging signals of the first port turn via the converting unit
Change supply voltage into, which is provided to the host system.
7. micro projector as claimed in claim 6, it is characterised in that: the load protection module include first switch unit,
Second switch unit and protection circuit, the first switch unit are connected between the first port and the protection circuit, this second
Switch unit is connected between the second port and the protection circuit, which is also electrically connected the first switch unit and should
To control the conducting and cut-off of the first switch unit and the second switch unit, which is also electrically connected second switch unit
The protection circuit is connect to control the protection circuit in the projection mode and be somebody's turn to do via the second switch unit to second port offer
Second charging signals.
8. micro projector as claimed in claim 7, it is characterised in that: the micro projector further include the first detection branch and
Second detection branch, first detection branch are connected between the first port and the control unit, which connects
It is connected between the second port and the control unit, which examines according to first detection branch and second detection branch
The loading condition of the first port and the second port for measuring controls the first switch, the second switch, the first switch list
Member, the conducting of the second switch unit and cut-off are to control whether to carry out power-off guarantor to the first port and/or the second port
Shield.
9. micro projector as described in claim 1, it is characterised in that: the micro projector further include mode selection switch and
Ray machine, when which is turned on, which receives the first port or the second end by the switching circuit
The data-signal of mouth simultaneously controls the ray machine according to the data-signal of the first port or second port progress Projection Display；The mould
When formula selection switch is closed and the micro projector enters the fast charge mode, and it is suitable from this which controls the first port
Orchestration receives second charging signals, which powers to the battery and the second port.
10. micro projector as described in claim 1, it is characterised in that: the first port is two directions' inputing/output port,
The second port is output port or data input/output and charging output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920251370.0U CN209402206U (en) | 2019-02-28 | 2019-02-28 | Micro projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920251370.0U CN209402206U (en) | 2019-02-28 | 2019-02-28 | Micro projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209402206U true CN209402206U (en) | 2019-09-17 |
Family
ID=67899557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920251370.0U Active CN209402206U (en) | 2019-02-28 | 2019-02-28 | Micro projector |
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| Country | Link |
|---|---|
| CN (1) | CN209402206U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109842180A (en) * | 2019-02-28 | 2019-06-04 | 深圳一维山科技有限公司 | Micro projector and its charge/discharge control method |
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2019
- 2019-02-28 CN CN201920251370.0U patent/CN209402206U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109842180A (en) * | 2019-02-28 | 2019-06-04 | 深圳一维山科技有限公司 | Micro projector and its charge/discharge control method |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230427 Address after: No. 99 Heyi Road, Haishu District, Ningbo City, Zhejiang Province Patentee after: Vico Technology Co.,Ltd. Address before: 518000 Building D, Building 2A, Mindray Building, Keji South 12th Road, Yuehai Street, Nanshan District, Shenzhen, Guangdong Province Patentee before: SHENZHEN EVIZEN TECHNOLOGY Co.,Ltd. |