Embodiment
The utility model provides a kind of portable flat computer Multi-Function Keyboard, for portable flat computer provides Keyboard Control, and functions such as wired network interface, USB expansion and charging.
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is a part of embodiment of the utility model, rather than whole embodiment.Based on the embodiment of the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the protection domain of the utility model.
The utility model hardware specification is following:
(1) standard 101/102 keyboard.
(2) USBs that connect portable flat computer.
(3) two USBs that connect other external device.
(4) one are used for the Ethernet interface that cable network connects.
(5) battery interfaces support mobile phone to use lithium battery.
(6) power supply adaptor interfaces.
(7) power switches.
(8) four LEDs pilot lamp: battery electric quantity indication (redness), battery charge indication (red and green color), Ethernet connects indication (green), keyboard capital and small letter indication (green)
As shown in Figure 1, the circuit structure diagram for a kind of portable flat computer Multi-Function Keyboard of the utility model specifies each several part below in conjunction with Fig. 1:
Up USB 101: connect portable flat computer.
USB analog switch 102: whether according to external power adapter 115 or battery 112 decide the connection of the KBC 103 of band USB; Like external power adapter 115 or battery 112; The KBC 103 of band USB is connected to universal serial bus concentrator 106; Otherwise, be connected to up USB 101.
The KBC 103 of band USB: be used for the push button signalling of keyboard 104 is encoded, and transmit through USB.
Keyboard 104: standard 101/102 keyboard.
Keyboard capital and small letter indication 105: green LED lamp, after keyboard 104 capitalization started, green light was bright, otherwise green light goes out.
Universal serial bus concentrator 106: when portable flat computer is connected to up USB 101; And power supply adaptor 115 or battery 112 connect last time; Be used for the USB of portable flat computer is expanded to a plurality of USBs, be convenient to use simultaneously a plurality of universal serial bus devices.
The ethernet controller 107 of band USB: be used for realizing that through USB Ethernet connects.
Ethernet interface 108: standard RJ45 interface.
Ethernet connects indication 109: green LED lamp, and on Ethernet connected, green light was bright, otherwise green light goes out.
Descending USB A110: be used to connect other outside universal serial bus device.
Descending USB B111: be used to connect other outside universal serial bus device.
Supply module 112: be used for converting the input voltage of battery 112 or power supply adaptor 115 into each module required voltage, and insert situation according to equipment the supply current of each equipment is controlled.
Battery 113: polymer Li-ion battery is used under the situation that does not connect power supply adaptor 115, supplying power.
Battery electric quantity indication 114: green LED lamp, along with battery electric quantity reduces, the brightness of lamp reduces, and after battery is stopped power supply, extinguishes.
Charging module 115: when Connecting Power source adapter 117, be used for battery 113 is charged.
Charging indication 116: red and green color LED lamp, green light is bright when charging is carried out, and when battery was full of, red light was bright.
Power supply adaptor input interface 117: be used for external power adapter, for each functional module power supply be provided for battery 113 chargings and through supply module 112.
Whether power switch 118: be used to control supply module 112 and work: when closing, supply module 112 quits work, and battery 113 all can't provide power supply for each functional module with power supply adaptor 117; When opening, supply module 112 operate as normal, battery 113 all can be each functional module with power supply adaptor 117 power supply is provided;
Be elaborated below in conjunction with the function of specific embodiment to the utility model:
Embodiment one, and power switch 118 is opened, and connects portable flat computer through up USB 101, is also referred to as " connecting the machine pattern ".
When battery 113 not being installed and not connecting power supply adaptor 117; USB analog switch 102 will be connected to up USB 101 with the KBC 103 of USB; For keyboard 104 and keyboard capital and small letter indication 105 power supply is provided through up USB 101 by portable flat computer, other functional module is not supplied power, in such cases; Have only keypad function to use, other function can't be used.
When battery 113 being installed but not connecting power supply adaptor 117; Battery 113 provides power supply through supply module 112 to each functional module; This moment, all functions all can be used; Descending USB A110 and descending USB B111 can support the supply current of the highest 700mA respectively, can connect high-power outside universal serial bus device, like portable hard drive.
When connecting power supply adaptor 117 but battery 113 is not installed, power supply adaptor 117 provides power supply through supply module 112 to each functional module, can 1.2 times all functions of describing of operating position.In addition; Can also for portable flat computer power supply be provided through up USB 101: when not being connected outside universal serial bus device with descending USB B111, can 1200mA be provided electric current for portable flat computer through descending USB A110; Instantly working has when connecting an outside universal serial bus device with serial bus interface A110 or descending USB B111, can 600mA be provided electric current for portable flat computer; Instantly work when all being connected with outside universal serial bus device, be provided as portable flat computer electric current is provided with serial bus interface A110 and descending USB B111.
When connecting power supply adaptor 117 and battery 113 being installed, power supply adaptor 117 provides power supply through supply module 112 to each functional module, can 1.2 times all functions of describing of operating position.Under the situation that battery 113 electric weight are full of, can power supply and situation 1.3 described function classes be provided seemingly for portable flat computer through up USB 101.When battery 113 electric weight less than the time; Power supply adaptor 117 stops for portable flat computer power supply being provided through up USB 101; But give battery 113 chargings through charging module 115; When not being connected outside universal serial bus device with descending USB B111, can 300mA be provided charging current for battery 113 through descending USB A110; Instantly working has when connecting an outside universal serial bus device with serial bus interface A110 or descending USB B111, can 150mA be provided charging current for battery 113; Instantly work when all being connected with outside universal serial bus device with serial bus interface A110 and descending USB B111, stopping is battery 113 chargings.
Embodiment two, and power switch 118 is opened, and do not connect portable flat computer through up USB 101, are also referred to as " offline mode ".
When battery 113 being installed but not connecting power supply adaptor 117; Battery 113 provides power supply through supply module 112 for each functional module; Owing to be in " offline mode "; Keyboard and ethernet feature can't use, but can be the charging of outside universal serial bus device through descending USB A110 and descending USB B111, the highest the 750mA electric current can be provided.
When connecting power supply adaptor 117, power supply adaptor 117 provides power supply through supply module 112 for each functional module, can 2.1 times described functions of operating position.In addition; Power supply adaptor 117 can give battery 113 chargings through charging module 115; When not being connected outside universal serial bus device with descending USB B111, can 300mA be provided charging current for battery 113 through descending USB A110; Instantly working has when connecting an outside universal serial bus device with serial bus interface A110 or descending USB B111, can 150mA be provided charging current for battery 113; Instantly work when all being connected with outside universal serial bus device with serial bus interface A110 and descending USB B111, stopping is battery 113 chargings.
Embodiment three, and power switch 118 is closed, and are also referred to as " shutdown mode ".
When connecting portable flat computer through up USB 101, this moment is similar with situation 1.1, and the realization function is the same, repeats no more.
When having connected power supply adaptor 117 and battery 113 being installed, power supply adaptor 117 can be battery 113 chargings through charging module 115, and charging current is 1000mA.
As shown in Figure 2, be the outside drawing of a kind of portable flat computer Multi-Function Keyboard of the utility model.
As shown in Figure 3, be a kind of portable flat computer Multi-Function Keyboard mechanical construction drawing of the utility model.
Each mechanical part functional description is following:
Keyboard 301: information and literal input, 104 in the corresponding diagram 1.
Front panel 302: assembling guard member.
Secondary printed circuit board (PCB) 303: control circuit, 101 and 117 in the corresponding diagram 1.
Main printed circuit board 304: control circuit, 102,103,105,106 in the corresponding diagram 1,107,108,109,110,111,112,114,115,116,117.
Rear panel 305: assembling guard member.
Battery 306: power supply is provided, 113 in the corresponding diagram 1.
Battery cover 307: assembling guard member.
Toggle switch 308: power switch, 118 in the corresponding diagram 1.
Leaded light post 309: be used for 105,109,114,116 the light of Fig. 1 is directed at front panel.
As shown in Figure 4, be the actual circuit structure figure of a kind of portable flat computer Multi-Function Keyboard of the utility model.
The side circuit each several part is introduced as follows in detail:
USB Device Port 401: up USB is used to connect portable flat computer.
SGM7222YWQ10/TR 402: the USB analog switch; Input end connects HT82B40R 403; Output terminal connects USB Device Port 401 and LAN9513-JZX 406 respectively, decides input end to be connected to which output terminal according to the output voltage of BL9193-33ABPRN 419, if BL9193-33ABPRN 419 output voltages be height; Then HT82B40R 403 is connected to LAN9513-JZX 406, otherwise is connected to USB Device Port 401.
HT82B40R 403: the KBC of band USB is used for control signal with keyboard and transfers to through USB and transmitting.
Keyboard 404: standard 101/102 keyboard
LED 405: the capital and small letter pilot lamp, receive HT82B40R 403 controls, and when keyboard capitalization state, green light is bright.
LAN9513-JZX 406: the universal serial bus concentrator of band ethernet controller, can realize a USB is expanded to three USBs and an Ethernet interface.
HR601680 407: the Ethernet transformer, be used to carry out level conversion, and drive Ethernet interface.
RJ45 Port 408: Ethernet interface.
LED 409: Ethernet connects indication, and when Ethernet interface had connection, green light was bright.
USB Host Port A 410: descending USB is used to connect outside universal serial bus device.
USB Host Port B 411: descending USB is used to connect outside universal serial bus device.
RT9297GQW 412-1: power supply chip, output voltage is 5V, is used to drive each universal serial bus device.
FPF2165 412-2: the current limliting chip is used to limit the output maximum current of USB.
BL9193-33ABPRN 412-3: power supply chip, output voltage is 3.3V, is used to drive each inside chip.
Battery 413: polymer Li-ion battery.
LED 414: the electric weight pilot lamp, receive Battery 413 controls, and deepening exhausts until electric weight along with the cell output voltage reduction, and battery stops output, and green light goes out.
MCP73833-BZI/MF 415: the battery charging management chip, charging voltage and electric current are managed.
LED 416: charging indicator light, and green light is bright during charging, and red light is bright when being full of, and receives MCP73833-BZI/MF 415 controls.
DC In 417: the power supply adaptor input interface is used for external power adapter.
Switch 418: toggle switch, the output of control DC In 417 and Battery 413.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.